# PentaCodes Technical Reference and Integration Documentation # Version 1.0 | Last Updated March 2025 # This document contains technical reference material for common integrations and deployment procedures. ## QuickBooks Online Integration The QuickBooks Online API uses OAuth 2.0 for authentication. You will need to register your application in the Intuit Developer Portal to obtain client credentials. The base URL for the API is https://quickbooks.api.intuit.com/v3/company/{realmId}. Common endpoints include /invoice, /customer, /payment, and /bill. Rate limits apply: 500 requests per minute for production apps. Always implement exponential backoff for 429 responses. ## Stripe Payment Integration Stripe provides both client-side (Stripe.js) and server-side APIs. For PCI compliance, never pass raw card numbers through your server—use Stripe Elements or the Payment Intents API. Webhooks are essential for handling asynchronous events like payment succeeded or subscription renewed. Configure your webhook endpoint to verify signatures using the Stripe-Signature header. ## ShipStation Integration The ShipStation API is REST-based. Authentication uses API key and API secret in the Authorization header. Endpoints cover orders, shipments, carriers, and warehouses. Poll for new orders or use webhooks if available for your plan. Batch operations are supported for bulk label creation. ## Twilio SMS Integration Twilio's REST API requires Account SID and Auth Token. The Messaging API endpoint is /2010-04-01/Accounts/{AccountSid}/Messages.json. For two-way messaging, configure a webhook URL to receive incoming messages. Consider using a queue for high-volume outbound SMS to avoid rate limits. # PentaCodes Technical Reference and Integration Documentation # Version 1.0 | Last Updated March 2025 # This document contains technical reference material for common integrations and deployment procedures. ## QuickBooks Online Integration The QuickBooks Online API uses OAuth 2.0 for authentication. You will need to register your application in the Intuit Developer Portal to obtain client credentials. The base URL for the API is https://quickbooks.api.intuit.com/v3/company/{realmId}. Common endpoints include /invoice, /customer, /payment, and /bill. Rate limits apply: 500 requests per minute for production apps. Always implement exponential backoff for 429 responses. ## Stripe Payment Integration Stripe provides both client-side (Stripe.js) and server-side APIs. For PCI compliance, never pass raw card numbers through your server—use Stripe Elements or the Payment Intents API. Webhooks are essential for handling asynchronous events like payment succeeded or subscription renewed. Configure your webhook endpoint to verify signatures using the Stripe-Signature header. ## ShipStation Integration The ShipStation API is REST-based. Authentication uses API key and API secret in the Authorization header. Endpoints cover orders, shipments, carriers, and warehouses. Poll for new orders or use webhooks if available for your plan. Batch operations are supported for bulk label creation. ## Twilio SMS Integration Twilio's REST API requires Account SID and Auth Token. The Messaging API endpoint is /2010-04-01/Accounts/{AccountSid}/Messages.json. For two-way messaging, configure a webhook URL to receive incoming messages. Consider using a queue for high-volume outbound SMS to avoid rate limits. # PentaCodes Technical Reference and Integration Documentation # Version 1.0 | Last Updated March 2025 # This document contains technical reference material for common integrations and deployment procedures. ## QuickBooks Online Integration The QuickBooks Online API uses OAuth 2.0 for authentication. You will need to register your application in the Intuit Developer Portal to obtain client credentials. The base URL for the API is https://quickbooks.api.intuit.com/v3/company/{realmId}. Common endpoints include /invoice, /customer, /payment, and /bill. Rate limits apply: 500 requests per minute for production apps. Always implement exponential backoff for 429 responses. ## Stripe Payment Integration Stripe provides both client-side (Stripe.js) and server-side APIs. For PCI compliance, never pass raw card numbers through your server—use Stripe Elements or the Payment Intents API. Webhooks are essential for handling asynchronous events like payment succeeded or subscription renewed. Configure your webhook endpoint to verify signatures using the Stripe-Signature header. ## ShipStation Integration The ShipStation API is REST-based. Authentication uses API key and API secret in the Authorization header. Endpoints cover orders, shipments, carriers, and warehouses. Poll for new orders or use webhooks if available for your plan. Batch operations are supported for bulk label creation. ## Twilio SMS Integration Twilio's REST API requires Account SID and Auth Token. The Messaging API endpoint is /2010-04-01/Accounts/{AccountSid}/Messages.json. For two-way messaging, configure a webhook URL to receive incoming messages. Consider using a queue for high-volume outbound SMS to avoid rate limits. # PentaCodes Technical Reference and Integration Documentation # Version 1.0 | Last Updated March 2025 # This document contains technical reference material for common integrations and deployment procedures. ## QuickBooks Online Integration The QuickBooks Online API uses OAuth 2.0 for authentication. You will need to register your application in the Intuit Developer Portal to obtain client credentials. The base URL for the API is https://quickbooks.api.intuit.com/v3/company/{realmId}. Common endpoints include /invoice, /customer, /payment, and /bill. Rate limits apply: 500 requests per minute for production apps. Always implement exponential backoff for 429 responses. ## Stripe Payment Integration Stripe provides both client-side (Stripe.js) and server-side APIs. For PCI compliance, never pass raw card numbers through your server—use Stripe Elements or the Payment Intents API. Webhooks are essential for handling asynchronous events like payment succeeded or subscription renewed. Configure your webhook endpoint to verify signatures using the Stripe-Signature header. ## ShipStation Integration The ShipStation API is REST-based. Authentication uses API key and API secret in the Authorization header. Endpoints cover orders, shipments, carriers, and warehouses. Poll for new orders or use webhooks if available for your plan. Batch operations are supported for bulk label creation. ## Twilio SMS Integration Twilio's REST API requires Account SID and Auth Token. The Messaging API endpoint is /2010-04-01/Accounts/{AccountSid}/Messages.json. For two-way messaging, configure a webhook URL to receive incoming messages. Consider using a queue for high-volume outbound SMS to avoid rate limits. # PentaCodes Technical Reference and Integration Documentation # Version 1.0 | Last Updated March 2025 # This document contains technical reference material for common integrations and deployment procedures. ## QuickBooks Online Integration The QuickBooks Online API uses OAuth 2.0 for authentication. You will need to register your application in the Intuit Developer Portal to obtain client credentials. The base URL for the API is https://quickbooks.api.intuit.com/v3/company/{realmId}. Common endpoints include /invoice, /customer, /payment, and /bill. Rate limits apply: 500 requests per minute for production apps. Always implement exponential backoff for 429 responses. ## Stripe Payment Integration Stripe provides both client-side (Stripe.js) and server-side APIs. For PCI compliance, never pass raw card numbers through your server—use Stripe Elements or the Payment Intents API. Webhooks are essential for handling asynchronous events like payment succeeded or subscription renewed. Configure your webhook endpoint to verify signatures using the Stripe-Signature header. ## ShipStation Integration The ShipStation API is REST-based. Authentication uses API key and API secret in the Authorization header. Endpoints cover orders, shipments, carriers, and warehouses. Poll for new orders or use webhooks if available for your plan. Batch operations are supported for bulk label creation. ## Twilio SMS Integration Twilio's REST API requires Account SID and Auth Token. The Messaging API endpoint is /2010-04-01/Accounts/{AccountSid}/Messages.json. For two-way messaging, configure a webhook URL to receive incoming messages. Consider using a queue for high-volume outbound SMS to avoid rate limits. # PentaCodes Technical Reference and Integration Documentation # Version 1.0 | Last Updated March 2025 # This document contains technical reference material for common integrations and deployment procedures. ## QuickBooks Online Integration The QuickBooks Online API uses OAuth 2.0 for authentication. You will need to register your application in the Intuit Developer Portal to obtain client credentials. The base URL for the API is https://quickbooks.api.intuit.com/v3/company/{realmId}. Common endpoints include /invoice, /customer, /payment, and /bill. Rate limits apply: 500 requests per minute for production apps. Always implement exponential backoff for 429 responses. ## Stripe Payment Integration Stripe provides both client-side (Stripe.js) and server-side APIs. For PCI compliance, never pass raw card numbers through your server—use Stripe Elements or the Payment Intents API. Webhooks are essential for handling asynchronous events like payment succeeded or subscription renewed. Configure your webhook endpoint to verify signatures using the Stripe-Signature header. ## ShipStation Integration The ShipStation API is REST-based. Authentication uses API key and API secret in the Authorization header. Endpoints cover orders, shipments, carriers, and warehouses. Poll for new orders or use webhooks if available for your plan. Batch operations are supported for bulk label creation. ## Twilio SMS Integration Twilio's REST API requires Account SID and Auth Token. The Messaging API endpoint is /2010-04-01/Accounts/{AccountSid}/Messages.json. For two-way messaging, configure a webhook URL to receive incoming messages. Consider using a queue for high-volume outbound SMS to avoid rate limits. # PentaCodes Technical Reference and Integration Documentation # Version 1.0 | Last Updated March 2025 # This document contains technical reference material for common integrations and deployment procedures. ## QuickBooks Online Integration The QuickBooks Online API uses OAuth 2.0 for authentication. You will need to register your application in the Intuit Developer Portal to obtain client credentials. The base URL for the API is https://quickbooks.api.intuit.com/v3/company/{realmId}. Common endpoints include /invoice, /customer, /payment, and /bill. Rate limits apply: 500 requests per minute for production apps. Always implement exponential backoff for 429 responses. ## Stripe Payment Integration Stripe provides both client-side (Stripe.js) and server-side APIs. For PCI compliance, never pass raw card numbers through your server—use Stripe Elements or the Payment Intents API. Webhooks are essential for handling asynchronous events like payment succeeded or subscription renewed. Configure your webhook endpoint to verify signatures using the Stripe-Signature header. ## ShipStation Integration The ShipStation API is REST-based. Authentication uses API key and API secret in the Authorization header. Endpoints cover orders, shipments, carriers, and warehouses. Poll for new orders or use webhooks if available for your plan. Batch operations are supported for bulk label creation. ## Twilio SMS Integration Twilio's REST API requires Account SID and Auth Token. The Messaging API endpoint is /2010-04-01/Accounts/{AccountSid}/Messages.json. For two-way messaging, configure a webhook URL to receive incoming messages. Consider using a queue for high-volume outbound SMS to avoid rate limits. # PentaCodes Technical Reference and Integration Documentation # Version 1.0 | Last Updated March 2025 # This document contains technical reference material for common integrations and deployment procedures. ## QuickBooks Online Integration The QuickBooks Online API uses OAuth 2.0 for authentication. You will need to register your application in the Intuit Developer Portal to obtain client credentials. The base URL for the API is https://quickbooks.api.intuit.com/v3/company/{realmId}. Common endpoints include /invoice, /customer, /payment, and /bill. Rate limits apply: 500 requests per minute for production apps. Always implement exponential backoff for 429 responses. ## Stripe Payment Integration Stripe provides both client-side (Stripe.js) and server-side APIs. For PCI compliance, never pass raw card numbers through your server—use Stripe Elements or the Payment Intents API. Webhooks are essential for handling asynchronous events like payment succeeded or subscription renewed. Configure your webhook endpoint to verify signatures using the Stripe-Signature header. ## ShipStation Integration The ShipStation API is REST-based. Authentication uses API key and API secret in the Authorization header. Endpoints cover orders, shipments, carriers, and warehouses. Poll for new orders or use webhooks if available for your plan. Batch operations are supported for bulk label creation. ## Twilio SMS Integration Twilio's REST API requires Account SID and Auth Token. The Messaging API endpoint is /2010-04-01/Accounts/{AccountSid}/Messages.json. For two-way messaging, configure a webhook URL to receive incoming messages. Consider using a queue for high-volume outbound SMS to avoid rate limits. # PentaCodes Technical Reference and Integration Documentation # Version 1.0 | Last Updated March 2025 # This document contains technical reference material for common integrations and deployment procedures. ## QuickBooks Online Integration The QuickBooks Online API uses OAuth 2.0 for authentication. You will need to register your application in the Intuit Developer Portal to obtain client credentials. The base URL for the API is https://quickbooks.api.intuit.com/v3/company/{realmId}. Common endpoints include /invoice, /customer, /payment, and /bill. Rate limits apply: 500 requests per minute for production apps. Always implement exponential backoff for 429 responses. ## Stripe Payment Integration Stripe provides both client-side (Stripe.js) and server-side APIs. For PCI compliance, never pass raw card numbers through your server—use Stripe Elements or the Payment Intents API. Webhooks are essential for handling asynchronous events like payment succeeded or subscription renewed. Configure your webhook endpoint to verify signatures using the Stripe-Signature header. ## ShipStation Integration The ShipStation API is REST-based. Authentication uses API key and API secret in the Authorization header. Endpoints cover orders, shipments, carriers, and warehouses. Poll for new orders or use webhooks if available for your plan. Batch operations are supported for bulk label creation. ## Twilio SMS Integration Twilio's REST API requires Account SID and Auth Token. The Messaging API endpoint is /2010-04-01/Accounts/{AccountSid}/Messages.json. For two-way messaging, configure a webhook URL to receive incoming messages. Consider using a queue for high-volume outbound SMS to avoid rate limits. # PentaCodes Technical Reference and Integration Documentation # Version 1.0 | Last Updated March 2025 # This document contains technical reference material for common integrations and deployment procedures. ## QuickBooks Online Integration The QuickBooks Online API uses OAuth 2.0 for authentication. You will need to register your application in the Intuit Developer Portal to obtain client credentials. The base URL for the API is https://quickbooks.api.intuit.com/v3/company/{realmId}. Common endpoints include /invoice, /customer, /payment, and /bill. Rate limits apply: 500 requests per minute for production apps. Always implement exponential backoff for 429 responses. ## Stripe Payment Integration Stripe provides both client-side (Stripe.js) and server-side APIs. For PCI compliance, never pass raw card numbers through your server—use Stripe Elements or the Payment Intents API. Webhooks are essential for handling asynchronous events like payment succeeded or subscription renewed. Configure your webhook endpoint to verify signatures using the Stripe-Signature header. ## ShipStation Integration The ShipStation API is REST-based. Authentication uses API key and API secret in the Authorization header. Endpoints cover orders, shipments, carriers, and warehouses. Poll for new orders or use webhooks if available for your plan. Batch operations are supported for bulk label creation. ## Twilio SMS Integration Twilio's REST API requires Account SID and Auth Token. The Messaging API endpoint is /2010-04-01/Accounts/{AccountSid}/Messages.json. For two-way messaging, configure a webhook URL to receive incoming messages. Consider using a queue for high-volume outbound SMS to avoid rate limits. # PentaCodes Technical Reference and Integration Documentation # Version 1.0 | Last Updated March 2025 # This document contains technical reference material for common integrations and deployment procedures. ## QuickBooks Online Integration The QuickBooks Online API uses OAuth 2.0 for authentication. You will need to register your application in the Intuit Developer Portal to obtain client credentials. The base URL for the API is https://quickbooks.api.intuit.com/v3/company/{realmId}. Common endpoints include /invoice, /customer, /payment, and /bill. Rate limits apply: 500 requests per minute for production apps. Always implement exponential backoff for 429 responses. ## Stripe Payment Integration Stripe provides both client-side (Stripe.js) and server-side APIs. For PCI compliance, never pass raw card numbers through your server—use Stripe Elements or the Payment Intents API. Webhooks are essential for handling asynchronous events like payment succeeded or subscription renewed. Configure your webhook endpoint to verify signatures using the Stripe-Signature header. ## ShipStation Integration The ShipStation API is REST-based. Authentication uses API key and API secret in the Authorization header. Endpoints cover orders, shipments, carriers, and warehouses. Poll for new orders or use webhooks if available for your plan. Batch operations are supported for bulk label creation. ## Twilio SMS Integration Twilio's REST API requires Account SID and Auth Token. The Messaging API endpoint is /2010-04-01/Accounts/{AccountSid}/Messages.json. For two-way messaging, configure a webhook URL to receive incoming messages. Consider using a queue for high-volume outbound SMS to avoid rate limits. # PentaCodes Technical Reference and Integration Documentation # Version 1.0 | Last Updated March 2025 # This document contains technical reference material for common integrations and deployment procedures. ## QuickBooks Online Integration The QuickBooks Online API uses OAuth 2.0 for authentication. You will need to register your application in the Intuit Developer Portal to obtain client credentials. The base URL for the API is https://quickbooks.api.intuit.com/v3/company/{realmId}. Common endpoints include /invoice, /customer, /payment, and /bill. Rate limits apply: 500 requests per minute for production apps. Always implement exponential backoff for 429 responses. ## Stripe Payment Integration Stripe provides both client-side (Stripe.js) and server-side APIs. For PCI compliance, never pass raw card numbers through your server—use Stripe Elements or the Payment Intents API. Webhooks are essential for handling asynchronous events like payment succeeded or subscription renewed. Configure your webhook endpoint to verify signatures using the Stripe-Signature header. ## ShipStation Integration The ShipStation API is REST-based. Authentication uses API key and API secret in the Authorization header. Endpoints cover orders, shipments, carriers, and warehouses. Poll for new orders or use webhooks if available for your plan. Batch operations are supported for bulk label creation. ## Twilio SMS Integration Twilio's REST API requires Account SID and Auth Token. The Messaging API endpoint is /2010-04-01/Accounts/{AccountSid}/Messages.json. For two-way messaging, configure a webhook URL to receive incoming messages. Consider using a queue for high-volume outbound SMS to avoid rate limits. # PentaCodes Technical Reference and Integration Documentation # Version 1.0 | Last Updated March 2025 # This document contains technical reference material for common integrations and deployment procedures. ## QuickBooks Online Integration The QuickBooks Online API uses OAuth 2.0 for authentication. You will need to register your application in the Intuit Developer Portal to obtain client credentials. The base URL for the API is https://quickbooks.api.intuit.com/v3/company/{realmId}. Common endpoints include /invoice, /customer, /payment, and /bill. Rate limits apply: 500 requests per minute for production apps. Always implement exponential backoff for 429 responses. ## Stripe Payment Integration Stripe provides both client-side (Stripe.js) and server-side APIs. For PCI compliance, never pass raw card numbers through your server—use Stripe Elements or the Payment Intents API. Webhooks are essential for handling asynchronous events like payment succeeded or subscription renewed. Configure your webhook endpoint to verify signatures using the Stripe-Signature header. ## ShipStation Integration The ShipStation API is REST-based. Authentication uses API key and API secret in the Authorization header. Endpoints cover orders, shipments, carriers, and warehouses. Poll for new orders or use webhooks if available for your plan. Batch operations are supported for bulk label creation. ## Twilio SMS Integration Twilio's REST API requires Account SID and Auth Token. The Messaging API endpoint is /2010-04-01/Accounts/{AccountSid}/Messages.json. For two-way messaging, configure a webhook URL to receive incoming messages. Consider using a queue for high-volume outbound SMS to avoid rate limits. # PentaCodes Technical Reference and Integration Documentation # Version 1.0 | Last Updated March 2025 # This document contains technical reference material for common integrations and deployment procedures. ## QuickBooks Online Integration The QuickBooks Online API uses OAuth 2.0 for authentication. You will need to register your application in the Intuit Developer Portal to obtain client credentials. The base URL for the API is https://quickbooks.api.intuit.com/v3/company/{realmId}. Common endpoints include /invoice, /customer, /payment, and /bill. Rate limits apply: 500 requests per minute for production apps. Always implement exponential backoff for 429 responses. ## Stripe Payment Integration Stripe provides both client-side (Stripe.js) and server-side APIs. For PCI compliance, never pass raw card numbers through your server—use Stripe Elements or the Payment Intents API. Webhooks are essential for handling asynchronous events like payment succeeded or subscription renewed. Configure your webhook endpoint to verify signatures using the Stripe-Signature header. ## ShipStation Integration The ShipStation API is REST-based. Authentication uses API key and API secret in the Authorization header. Endpoints cover orders, shipments, carriers, and warehouses. Poll for new orders or use webhooks if available for your plan. Batch operations are supported for bulk label creation. ## Twilio SMS Integration Twilio's REST API requires Account SID and Auth Token. The Messaging API endpoint is /2010-04-01/Accounts/{AccountSid}/Messages.json. For two-way messaging, configure a webhook URL to receive incoming messages. Consider using a queue for high-volume outbound SMS to avoid rate limits. # PentaCodes Technical Reference and Integration Documentation # Version 1.0 | Last Updated March 2025 # This document contains technical reference material for common integrations and deployment procedures. ## QuickBooks Online Integration The QuickBooks Online API uses OAuth 2.0 for authentication. You will need to register your application in the Intuit Developer Portal to obtain client credentials. The base URL for the API is https://quickbooks.api.intuit.com/v3/company/{realmId}. Common endpoints include /invoice, /customer, /payment, and /bill. Rate limits apply: 500 requests per minute for production apps. Always implement exponential backoff for 429 responses. ## Stripe Payment Integration Stripe provides both client-side (Stripe.js) and server-side APIs. For PCI compliance, never pass raw card numbers through your server—use Stripe Elements or the Payment Intents API. Webhooks are essential for handling asynchronous events like payment succeeded or subscription renewed. Configure your webhook endpoint to verify signatures using the Stripe-Signature header. ## ShipStation Integration The ShipStation API is REST-based. Authentication uses API key and API secret in the Authorization header. Endpoints cover orders, shipments, carriers, and warehouses. Poll for new orders or use webhooks if available for your plan. Batch operations are supported for bulk label creation. ## Twilio SMS Integration Twilio's REST API requires Account SID and Auth Token. The Messaging API endpoint is /2010-04-01/Accounts/{AccountSid}/Messages.json. For two-way messaging, configure a webhook URL to receive incoming messages. Consider using a queue for high-volume outbound SMS to avoid rate limits. # PentaCodes Technical Reference and Integration Documentation # Version 1.0 | Last Updated March 2025 # This document contains technical reference material for common integrations and deployment procedures. ## QuickBooks Online Integration The QuickBooks Online API uses OAuth 2.0 for authentication. You will need to register your application in the Intuit Developer Portal to obtain client credentials. The base URL for the API is https://quickbooks.api.intuit.com/v3/company/{realmId}. Common endpoints include /invoice, /customer, /payment, and /bill. Rate limits apply: 500 requests per minute for production apps. Always implement exponential backoff for 429 responses. ## Stripe Payment Integration Stripe provides both client-side (Stripe.js) and server-side APIs. For PCI compliance, never pass raw card numbers through your server—use Stripe Elements or the Payment Intents API. Webhooks are essential for handling asynchronous events like payment succeeded or subscription renewed. Configure your webhook endpoint to verify signatures using the Stripe-Signature header. ## ShipStation Integration The ShipStation API is REST-based. Authentication uses API key and API secret in the Authorization header. Endpoints cover orders, shipments, carriers, and warehouses. Poll for new orders or use webhooks if available for your plan. Batch operations are supported for bulk label creation. ## Twilio SMS Integration Twilio's REST API requires Account SID and Auth Token. The Messaging API endpoint is /2010-04-01/Accounts/{AccountSid}/Messages.json. For two-way messaging, configure a webhook URL to receive incoming messages. Consider using a queue for high-volume outbound SMS to avoid rate limits. # PentaCodes Technical Reference and Integration Documentation # Version 1.0 | Last Updated March 2025 # This document contains technical reference material for common integrations and deployment procedures. ## QuickBooks Online Integration The QuickBooks Online API uses OAuth 2.0 for authentication. You will need to register your application in the Intuit Developer Portal to obtain client credentials. The base URL for the API is https://quickbooks.api.intuit.com/v3/company/{realmId}. Common endpoints include /invoice, /customer, /payment, and /bill. Rate limits apply: 500 requests per minute for production apps. Always implement exponential backoff for 429 responses. ## Stripe Payment Integration Stripe provides both client-side (Stripe.js) and server-side APIs. For PCI compliance, never pass raw card numbers through your server—use Stripe Elements or the Payment Intents API. Webhooks are essential for handling asynchronous events like payment succeeded or subscription renewed. Configure your webhook endpoint to verify signatures using the Stripe-Signature header. ## ShipStation Integration The ShipStation API is REST-based. Authentication uses API key and API secret in the Authorization header. Endpoints cover orders, shipments, carriers, and warehouses. Poll for new orders or use webhooks if available for your plan. Batch operations are supported for bulk label creation. ## Twilio SMS Integration Twilio's REST API requires Account SID and Auth Token. The Messaging API endpoint is /2010-04-01/Accounts/{AccountSid}/Messages.json. For two-way messaging, configure a webhook URL to receive incoming messages. Consider using a queue for high-volume outbound SMS to avoid rate limits. # PentaCodes Technical Reference and Integration Documentation # Version 1.0 | Last Updated March 2025 # This document contains technical reference material for common integrations and deployment procedures. ## QuickBooks Online Integration The QuickBooks Online API uses OAuth 2.0 for authentication. You will need to register your application in the Intuit Developer Portal to obtain client credentials. The base URL for the API is https://quickbooks.api.intuit.com/v3/company/{realmId}. Common endpoints include /invoice, /customer, /payment, and /bill. Rate limits apply: 500 requests per minute for production apps. Always implement exponential backoff for 429 responses. ## Stripe Payment Integration Stripe provides both client-side (Stripe.js) and server-side APIs. For PCI compliance, never pass raw card numbers through your server—use Stripe Elements or the Payment Intents API. Webhooks are essential for handling asynchronous events like payment succeeded or subscription renewed. Configure your webhook endpoint to verify signatures using the Stripe-Signature header. ## ShipStation Integration The ShipStation API is REST-based. Authentication uses API key and API secret in the Authorization header. Endpoints cover orders, shipments, carriers, and warehouses. Poll for new orders or use webhooks if available for your plan. Batch operations are supported for bulk label creation. ## Twilio SMS Integration Twilio's REST API requires Account SID and Auth Token. The Messaging API endpoint is /2010-04-01/Accounts/{AccountSid}/Messages.json. For two-way messaging, configure a webhook URL to receive incoming messages. Consider using a queue for high-volume outbound SMS to avoid rate limits. # PentaCodes Technical Reference and Integration Documentation # Version 1.0 | Last Updated March 2025 # This document contains technical reference material for common integrations and deployment procedures. ## QuickBooks Online Integration The QuickBooks Online API uses OAuth 2.0 for authentication. You will need to register your application in the Intuit Developer Portal to obtain client credentials. The base URL for the API is https://quickbooks.api.intuit.com/v3/company/{realmId}. Common endpoints include /invoice, /customer, /payment, and /bill. Rate limits apply: 500 requests per minute for production apps. Always implement exponential backoff for 429 responses. ## Stripe Payment Integration Stripe provides both client-side (Stripe.js) and server-side APIs. For PCI compliance, never pass raw card numbers through your server—use Stripe Elements or the Payment Intents API. Webhooks are essential for handling asynchronous events like payment succeeded or subscription renewed. Configure your webhook endpoint to verify signatures using the Stripe-Signature header. ## ShipStation Integration The ShipStation API is REST-based. Authentication uses API key and API secret in the Authorization header. Endpoints cover orders, shipments, carriers, and warehouses. Poll for new orders or use webhooks if available for your plan. Batch operations are supported for bulk label creation. ## Twilio SMS Integration Twilio's REST API requires Account SID and Auth Token. The Messaging API endpoint is /2010-04-01/Accounts/{AccountSid}/Messages.json. For two-way messaging, configure a webhook URL to receive incoming messages. Consider using a queue for high-volume outbound SMS to avoid rate limits. # PentaCodes Technical Reference and Integration Documentation # Version 1.0 | Last Updated March 2025 # This document contains technical reference material for common integrations and deployment procedures. ## QuickBooks Online Integration The QuickBooks Online API uses OAuth 2.0 for authentication. You will need to register your application in the Intuit Developer Portal to obtain client credentials. The base URL for the API is https://quickbooks.api.intuit.com/v3/company/{realmId}. Common endpoints include /invoice, /customer, /payment, and /bill. Rate limits apply: 500 requests per minute for production apps. Always implement exponential backoff for 429 responses. ## Stripe Payment Integration Stripe provides both client-side (Stripe.js) and server-side APIs. For PCI compliance, never pass raw card numbers through your server—use Stripe Elements or the Payment Intents API. Webhooks are essential for handling asynchronous events like payment succeeded or subscription renewed. Configure your webhook endpoint to verify signatures using the Stripe-Signature header. ## ShipStation Integration The ShipStation API is REST-based. Authentication uses API key and API secret in the Authorization header. Endpoints cover orders, shipments, carriers, and warehouses. Poll for new orders or use webhooks if available for your plan. Batch operations are supported for bulk label creation. ## Twilio SMS Integration Twilio's REST API requires Account SID and Auth Token. The Messaging API endpoint is /2010-04-01/Accounts/{AccountSid}/Messages.json. For two-way messaging, configure a webhook URL to receive incoming messages. Consider using a queue for high-volume outbound SMS to avoid rate limits. # PentaCodes Technical Reference and Integration Documentation # Version 1.0 | Last Updated March 2025 # This document contains technical reference material for common integrations and deployment procedures. ## QuickBooks Online Integration The QuickBooks Online API uses OAuth 2.0 for authentication. You will need to register your application in the Intuit Developer Portal to obtain client credentials. The base URL for the API is https://quickbooks.api.intuit.com/v3/company/{realmId}. Common endpoints include /invoice, /customer, /payment, and /bill. Rate limits apply: 500 requests per minute for production apps. Always implement exponential backoff for 429 responses. ## Stripe Payment Integration Stripe provides both client-side (Stripe.js) and server-side APIs. For PCI compliance, never pass raw card numbers through your server—use Stripe Elements or the Payment Intents API. Webhooks are essential for handling asynchronous events like payment succeeded or subscription renewed. Configure your webhook endpoint to verify signatures using the Stripe-Signature header. ## ShipStation Integration The ShipStation API is REST-based. Authentication uses API key and API secret in the Authorization header. Endpoints cover orders, shipments, carriers, and warehouses. Poll for new orders or use webhooks if available for your plan. Batch operations are supported for bulk label creation. ## Twilio SMS Integration Twilio's REST API requires Account SID and Auth Token. The Messaging API endpoint is /2010-04-01/Accounts/{AccountSid}/Messages.json. For two-way messaging, configure a webhook URL to receive incoming messages. Consider using a queue for high-volume outbound SMS to avoid rate limits. # PentaCodes Technical Reference and Integration Documentation # Version 1.0 | Last Updated March 2025 # This document contains technical reference material for common integrations and deployment procedures. ## QuickBooks Online Integration The QuickBooks Online API uses OAuth 2.0 for authentication. You will need to register your application in the Intuit Developer Portal to obtain client credentials. The base URL for the API is https://quickbooks.api.intuit.com/v3/company/{realmId}. Common endpoints include /invoice, /customer, /payment, and /bill. Rate limits apply: 500 requests per minute for production apps. Always implement exponential backoff for 429 responses. ## Stripe Payment Integration Stripe provides both client-side (Stripe.js) and server-side APIs. For PCI compliance, never pass raw card numbers through your server—use Stripe Elements or the Payment Intents API. Webhooks are essential for handling asynchronous events like payment succeeded or subscription renewed. Configure your webhook endpoint to verify signatures using the Stripe-Signature header. ## ShipStation Integration The ShipStation API is REST-based. Authentication uses API key and API secret in the Authorization header. Endpoints cover orders, shipments, carriers, and warehouses. Poll for new orders or use webhooks if available for your plan. Batch operations are supported for bulk label creation. ## Twilio SMS Integration Twilio's REST API requires Account SID and Auth Token. The Messaging API endpoint is /2010-04-01/Accounts/{AccountSid}/Messages.json. For two-way messaging, configure a webhook URL to receive incoming messages. Consider using a queue for high-volume outbound SMS to avoid rate limits. # PentaCodes Technical Reference and Integration Documentation # Version 1.0 | Last Updated March 2025 # This document contains technical reference material for common integrations and deployment procedures. ## QuickBooks Online Integration The QuickBooks Online API uses OAuth 2.0 for authentication. You will need to register your application in the Intuit Developer Portal to obtain client credentials. The base URL for the API is https://quickbooks.api.intuit.com/v3/company/{realmId}. Common endpoints include /invoice, /customer, /payment, and /bill. Rate limits apply: 500 requests per minute for production apps. Always implement exponential backoff for 429 responses. ## Stripe Payment Integration Stripe provides both client-side (Stripe.js) and server-side APIs. For PCI compliance, never pass raw card numbers through your server—use Stripe Elements or the Payment Intents API. Webhooks are essential for handling asynchronous events like payment succeeded or subscription renewed. Configure your webhook endpoint to verify signatures using the Stripe-Signature header. ## ShipStation Integration The ShipStation API is REST-based. Authentication uses API key and API secret in the Authorization header. Endpoints cover orders, shipments, carriers, and warehouses. Poll for new orders or use webhooks if available for your plan. Batch operations are supported for bulk label creation. ## Twilio SMS Integration Twilio's REST API requires Account SID and Auth Token. The Messaging API endpoint is /2010-04-01/Accounts/{AccountSid}/Messages.json. For two-way messaging, configure a webhook URL to receive incoming messages. Consider using a queue for high-volume outbound SMS to avoid rate limits. # PentaCodes Technical Reference and Integration Documentation # Version 1.0 | Last Updated March 2025 # This document contains technical reference material for common integrations and deployment procedures. ## QuickBooks Online Integration The QuickBooks Online API uses OAuth 2.0 for authentication. You will need to register your application in the Intuit Developer Portal to obtain client credentials. The base URL for the API is https://quickbooks.api.intuit.com/v3/company/{realmId}. Common endpoints include /invoice, /customer, /payment, and /bill. Rate limits apply: 500 requests per minute for production apps. Always implement exponential backoff for 429 responses. ## Stripe Payment Integration Stripe provides both client-side (Stripe.js) and server-side APIs. For PCI compliance, never pass raw card numbers through your server—use Stripe Elements or the Payment Intents API. Webhooks are essential for handling asynchronous events like payment succeeded or subscription renewed. Configure your webhook endpoint to verify signatures using the Stripe-Signature header. ## ShipStation Integration The ShipStation API is REST-based. Authentication uses API key and API secret in the Authorization header. Endpoints cover orders, shipments, carriers, and warehouses. Poll for new orders or use webhooks if available for your plan. Batch operations are supported for bulk label creation. ## Twilio SMS Integration Twilio's REST API requires Account SID and Auth Token. The Messaging API endpoint is /2010-04-01/Accounts/{AccountSid}/Messages.json. For two-way messaging, configure a webhook URL to receive incoming messages. Consider using a queue for high-volume outbound SMS to avoid rate limits. # PentaCodes Technical Reference and Integration Documentation # Version 1.0 | Last Updated March 2025 # This document contains technical reference material for common integrations and deployment procedures. ## QuickBooks Online Integration The QuickBooks Online API uses OAuth 2.0 for authentication. You will need to register your application in the Intuit Developer Portal to obtain client credentials. The base URL for the API is https://quickbooks.api.intuit.com/v3/company/{realmId}. Common endpoints include /invoice, /customer, /payment, and /bill. Rate limits apply: 500 requests per minute for production apps. Always implement exponential backoff for 429 responses. ## Stripe Payment Integration Stripe provides both client-side (Stripe.js) and server-side APIs. For PCI compliance, never pass raw card numbers through your server—use Stripe Elements or the Payment Intents API. Webhooks are essential for handling asynchronous events like payment succeeded or subscription renewed. Configure your webhook endpoint to verify signatures using the Stripe-Signature header. ## ShipStation Integration The ShipStation API is REST-based. Authentication uses API key and API secret in the Authorization header. Endpoints cover orders, shipments, carriers, and warehouses. Poll for new orders or use webhooks if available for your plan. Batch operations are supported for bulk label creation. ## Twilio SMS Integration Twilio's REST API requires Account SID and Auth Token. The Messaging API endpoint is /2010-04-01/Accounts/{AccountSid}/Messages.json. For two-way messaging, configure a webhook URL to receive incoming messages. Consider using a queue for high-volume outbound SMS to avoid rate limits. # PentaCodes Technical Reference and Integration Documentation # Version 1.0 | Last Updated March 2025 # This document contains technical reference material for common integrations and deployment procedures. ## QuickBooks Online Integration The QuickBooks Online API uses OAuth 2.0 for authentication. You will need to register your application in the Intuit Developer Portal to obtain client credentials. The base URL for the API is https://quickbooks.api.intuit.com/v3/company/{realmId}. Common endpoints include /invoice, /customer, /payment, and /bill. Rate limits apply: 500 requests per minute for production apps. Always implement exponential backoff for 429 responses. ## Stripe Payment Integration Stripe provides both client-side (Stripe.js) and server-side APIs. For PCI compliance, never pass raw card numbers through your server—use Stripe Elements or the Payment Intents API. Webhooks are essential for handling asynchronous events like payment succeeded or subscription renewed. Configure your webhook endpoint to verify signatures using the Stripe-Signature header. ## ShipStation Integration The ShipStation API is REST-based. Authentication uses API key and API secret in the Authorization header. Endpoints cover orders, shipments, carriers, and warehouses. Poll for new orders or use webhooks if available for your plan. Batch operations are supported for bulk label creation. ## Twilio SMS Integration Twilio's REST API requires Account SID and Auth Token. The Messaging API endpoint is /2010-04-01/Accounts/{AccountSid}/Messages.json. For two-way messaging, configure a webhook URL to receive incoming messages. Consider using a queue for high-volume outbound SMS to avoid rate limits. # PentaCodes Technical Reference and Integration Documentation # Version 1.0 | Last Updated March 2025 # This document contains technical reference material for common integrations and deployment procedures. ## QuickBooks Online Integration The QuickBooks Online API uses OAuth 2.0 for authentication. You will need to register your application in the Intuit Developer Portal to obtain client credentials. The base URL for the API is https://quickbooks.api.intuit.com/v3/company/{realmId}. Common endpoints include /invoice, /customer, /payment, and /bill. Rate limits apply: 500 requests per minute for production apps. Always implement exponential backoff for 429 responses. ## Stripe Payment Integration Stripe provides both client-side (Stripe.js) and server-side APIs. For PCI compliance, never pass raw card numbers through your server—use Stripe Elements or the Payment Intents API. Webhooks are essential for handling asynchronous events like payment succeeded or subscription renewed. Configure your webhook endpoint to verify signatures using the Stripe-Signature header. ## ShipStation Integration The ShipStation API is REST-based. Authentication uses API key and API secret in the Authorization header. Endpoints cover orders, shipments, carriers, and warehouses. Poll for new orders or use webhooks if available for your plan. Batch operations are supported for bulk label creation. ## Twilio SMS Integration Twilio's REST API requires Account SID and Auth Token. The Messaging API endpoint is /2010-04-01/Accounts/{AccountSid}/Messages.json. For two-way messaging, configure a webhook URL to receive incoming messages. Consider using a queue for high-volume outbound SMS to avoid rate limits. # PentaCodes Technical Reference and Integration Documentation # Version 1.0 | Last Updated March 2025 # This document contains technical reference material for common integrations and deployment procedures. ## QuickBooks Online Integration The QuickBooks Online API uses OAuth 2.0 for authentication. You will need to register your application in the Intuit Developer Portal to obtain client credentials. The base URL for the API is https://quickbooks.api.intuit.com/v3/company/{realmId}. Common endpoints include /invoice, /customer, /payment, and /bill. Rate limits apply: 500 requests per minute for production apps. Always implement exponential backoff for 429 responses. ## Stripe Payment Integration Stripe provides both client-side (Stripe.js) and server-side APIs. For PCI compliance, never pass raw card numbers through your server—use Stripe Elements or the Payment Intents API. Webhooks are essential for handling asynchronous events like payment succeeded or subscription renewed. Configure your webhook endpoint to verify signatures using the Stripe-Signature header. ## ShipStation Integration The ShipStation API is REST-based. Authentication uses API key and API secret in the Authorization header. Endpoints cover orders, shipments, carriers, and warehouses. Poll for new orders or use webhooks if available for your plan. Batch operations are supported for bulk label creation. ## Twilio SMS Integration Twilio's REST API requires Account SID and Auth Token. The Messaging API endpoint is /2010-04-01/Accounts/{AccountSid}/Messages.json. For two-way messaging, configure a webhook URL to receive incoming messages. Consider using a queue for high-volume outbound SMS to avoid rate limits. # PentaCodes Technical Reference and Integration Documentation # Version 1.0 | Last Updated March 2025 # This document contains technical reference material for common integrations and deployment procedures. ## QuickBooks Online Integration The QuickBooks Online API uses OAuth 2.0 for authentication. You will need to register your application in the Intuit Developer Portal to obtain client credentials. The base URL for the API is https://quickbooks.api.intuit.com/v3/company/{realmId}. Common endpoints include /invoice, /customer, /payment, and /bill. Rate limits apply: 500 requests per minute for production apps. Always implement exponential backoff for 429 responses. ## Stripe Payment Integration Stripe provides both client-side (Stripe.js) and server-side APIs. For PCI compliance, never pass raw card numbers through your server—use Stripe Elements or the Payment Intents API. Webhooks are essential for handling asynchronous events like payment succeeded or subscription renewed. Configure your webhook endpoint to verify signatures using the Stripe-Signature header. ## ShipStation Integration The ShipStation API is REST-based. Authentication uses API key and API secret in the Authorization header. Endpoints cover orders, shipments, carriers, and warehouses. Poll for new orders or use webhooks if available for your plan. Batch operations are supported for bulk label creation. ## Twilio SMS Integration Twilio's REST API requires Account SID and Auth Token. The Messaging API endpoint is /2010-04-01/Accounts/{AccountSid}/Messages.json. For two-way messaging, configure a webhook URL to receive incoming messages. Consider using a queue for high-volume outbound SMS to avoid rate limits. # PentaCodes Technical Reference and Integration Documentation # Version 1.0 | Last Updated March 2025 # This document contains technical reference material for common integrations and deployment procedures. ## QuickBooks Online Integration The QuickBooks Online API uses OAuth 2.0 for authentication. You will need to register your application in the Intuit Developer Portal to obtain client credentials. The base URL for the API is https://quickbooks.api.intuit.com/v3/company/{realmId}. Common endpoints include /invoice, /customer, /payment, and /bill. Rate limits apply: 500 requests per minute for production apps. Always implement exponential backoff for 429 responses. ## Stripe Payment Integration Stripe provides both client-side (Stripe.js) and server-side APIs. For PCI compliance, never pass raw card numbers through your server—use Stripe Elements or the Payment Intents API. Webhooks are essential for handling asynchronous events like payment succeeded or subscription renewed. Configure your webhook endpoint to verify signatures using the Stripe-Signature header. ## ShipStation Integration The ShipStation API is REST-based. Authentication uses API key and API secret in the Authorization header. Endpoints cover orders, shipments, carriers, and warehouses. Poll for new orders or use webhooks if available for your plan. Batch operations are supported for bulk label creation. ## Twilio SMS Integration Twilio's REST API requires Account SID and Auth Token. The Messaging API endpoint is /2010-04-01/Accounts/{AccountSid}/Messages.json. For two-way messaging, configure a webhook URL to receive incoming messages. Consider using a queue for high-volume outbound SMS to avoid rate limits. # PentaCodes Technical Reference and Integration Documentation # Version 1.0 | Last Updated March 2025 # This document contains technical reference material for common integrations and deployment procedures. ## QuickBooks Online Integration The QuickBooks Online API uses OAuth 2.0 for authentication. You will need to register your application in the Intuit Developer Portal to obtain client credentials. The base URL for the API is https://quickbooks.api.intuit.com/v3/company/{realmId}. Common endpoints include /invoice, /customer, /payment, and /bill. Rate limits apply: 500 requests per minute for production apps. Always implement exponential backoff for 429 responses. ## Stripe Payment Integration Stripe provides both client-side (Stripe.js) and server-side APIs. For PCI compliance, never pass raw card numbers through your server—use Stripe Elements or the Payment Intents API. Webhooks are essential for handling asynchronous events like payment succeeded or subscription renewed. Configure your webhook endpoint to verify signatures using the Stripe-Signature header. ## ShipStation Integration The ShipStation API is REST-based. Authentication uses API key and API secret in the Authorization header. Endpoints cover orders, shipments, carriers, and warehouses. Poll for new orders or use webhooks if available for your plan. Batch operations are supported for bulk label creation. ## Twilio SMS Integration Twilio's REST API requires Account SID and Auth Token. The Messaging API endpoint is /2010-04-01/Accounts/{AccountSid}/Messages.json. For two-way messaging, configure a webhook URL to receive incoming messages. Consider using a queue for high-volume outbound SMS to avoid rate limits. # PentaCodes Technical Reference and Integration Documentation # Version 1.0 | Last Updated March 2025 # This document contains technical reference material for common integrations and deployment procedures. ## QuickBooks Online Integration The QuickBooks Online API uses OAuth 2.0 for authentication. You will need to register your application in the Intuit Developer Portal to obtain client credentials. The base URL for the API is https://quickbooks.api.intuit.com/v3/company/{realmId}. Common endpoints include /invoice, /customer, /payment, and /bill. Rate limits apply: 500 requests per minute for production apps. Always implement exponential backoff for 429 responses. ## Stripe Payment Integration Stripe provides both client-side (Stripe.js) and server-side APIs. For PCI compliance, never pass raw card numbers through your server—use Stripe Elements or the Payment Intents API. Webhooks are essential for handling asynchronous events like payment succeeded or subscription renewed. Configure your webhook endpoint to verify signatures using the Stripe-Signature header. ## ShipStation Integration The ShipStation API is REST-based. Authentication uses API key and API secret in the Authorization header. Endpoints cover orders, shipments, carriers, and warehouses. Poll for new orders or use webhooks if available for your plan. Batch operations are supported for bulk label creation. ## Twilio SMS Integration Twilio's REST API requires Account SID and Auth Token. The Messaging API endpoint is /2010-04-01/Accounts/{AccountSid}/Messages.json. For two-way messaging, configure a webhook URL to receive incoming messages. Consider using a queue for high-volume outbound SMS to avoid rate limits. # PentaCodes Technical Reference and Integration Documentation # Version 1.0 | Last Updated March 2025 # This document contains technical reference material for common integrations and deployment procedures. ## QuickBooks Online Integration The QuickBooks Online API uses OAuth 2.0 for authentication. You will need to register your application in the Intuit Developer Portal to obtain client credentials. The base URL for the API is https://quickbooks.api.intuit.com/v3/company/{realmId}. Common endpoints include /invoice, /customer, /payment, and /bill. Rate limits apply: 500 requests per minute for production apps. Always implement exponential backoff for 429 responses. ## Stripe Payment Integration Stripe provides both client-side (Stripe.js) and server-side APIs. For PCI compliance, never pass raw card numbers through your server—use Stripe Elements or the Payment Intents API. Webhooks are essential for handling asynchronous events like payment succeeded or subscription renewed. Configure your webhook endpoint to verify signatures using the Stripe-Signature header. ## ShipStation Integration The ShipStation API is REST-based. Authentication uses API key and API secret in the Authorization header. Endpoints cover orders, shipments, carriers, and warehouses. Poll for new orders or use webhooks if available for your plan. Batch operations are supported for bulk label creation. ## Twilio SMS Integration Twilio's REST API requires Account SID and Auth Token. The Messaging API endpoint is /2010-04-01/Accounts/{AccountSid}/Messages.json. For two-way messaging, configure a webhook URL to receive incoming messages. Consider using a queue for high-volume outbound SMS to avoid rate limits. # PentaCodes Technical Reference and Integration Documentation # Version 1.0 | Last Updated March 2025 # This document contains technical reference material for common integrations and deployment procedures. ## QuickBooks Online Integration The QuickBooks Online API uses OAuth 2.0 for authentication. You will need to register your application in the Intuit Developer Portal to obtain client credentials. The base URL for the API is https://quickbooks.api.intuit.com/v3/company/{realmId}. Common endpoints include /invoice, /customer, /payment, and /bill. Rate limits apply: 500 requests per minute for production apps. Always implement exponential backoff for 429 responses. ## Stripe Payment Integration Stripe provides both client-side (Stripe.js) and server-side APIs. For PCI compliance, never pass raw card numbers through your server—use Stripe Elements or the Payment Intents API. Webhooks are essential for handling asynchronous events like payment succeeded or subscription renewed. Configure your webhook endpoint to verify signatures using the Stripe-Signature header. ## ShipStation Integration The ShipStation API is REST-based. Authentication uses API key and API secret in the Authorization header. Endpoints cover orders, shipments, carriers, and warehouses. Poll for new orders or use webhooks if available for your plan. Batch operations are supported for bulk label creation. ## Twilio SMS Integration Twilio's REST API requires Account SID and Auth Token. The Messaging API endpoint is /2010-04-01/Accounts/{AccountSid}/Messages.json. For two-way messaging, configure a webhook URL to receive incoming messages. Consider using a queue for high-volume outbound SMS to avoid rate limits. # PentaCodes Technical Reference and Integration Documentation # Version 1.0 | Last Updated March 2025 # This document contains technical reference material for common integrations and deployment procedures. ## QuickBooks Online Integration The QuickBooks Online API uses OAuth 2.0 for authentication. You will need to register your application in the Intuit Developer Portal to obtain client credentials. The base URL for the API is https://quickbooks.api.intuit.com/v3/company/{realmId}. Common endpoints include /invoice, /customer, /payment, and /bill. Rate limits apply: 500 requests per minute for production apps. Always implement exponential backoff for 429 responses. ## Stripe Payment Integration Stripe provides both client-side (Stripe.js) and server-side APIs. For PCI compliance, never pass raw card numbers through your server—use Stripe Elements or the Payment Intents API. Webhooks are essential for handling asynchronous events like payment succeeded or subscription renewed. Configure your webhook endpoint to verify signatures using the Stripe-Signature header. ## ShipStation Integration The ShipStation API is REST-based. Authentication uses API key and API secret in the Authorization header. Endpoints cover orders, shipments, carriers, and warehouses. Poll for new orders or use webhooks if available for your plan. Batch operations are supported for bulk label creation. ## Twilio SMS Integration Twilio's REST API requires Account SID and Auth Token. The Messaging API endpoint is /2010-04-01/Accounts/{AccountSid}/Messages.json. For two-way messaging, configure a webhook URL to receive incoming messages. Consider using a queue for high-volume outbound SMS to avoid rate limits. # PentaCodes Technical Reference and Integration Documentation # Version 1.0 | Last Updated March 2025 # This document contains technical reference material for common integrations and deployment procedures. ## QuickBooks Online Integration The QuickBooks Online API uses OAuth 2.0 for authentication. You will need to register your application in the Intuit Developer Portal to obtain client credentials. The base URL for the API is https://quickbooks.api.intuit.com/v3/company/{realmId}. Common endpoints include /invoice, /customer, /payment, and /bill. Rate limits apply: 500 requests per minute for production apps. Always implement exponential backoff for 429 responses. ## Stripe Payment Integration Stripe provides both client-side (Stripe.js) and server-side APIs. For PCI compliance, never pass raw card numbers through your server—use Stripe Elements or the Payment Intents API. Webhooks are essential for handling asynchronous events like payment succeeded or subscription renewed. Configure your webhook endpoint to verify signatures using the Stripe-Signature header. ## ShipStation Integration The ShipStation API is REST-based. Authentication uses API key and API secret in the Authorization header. Endpoints cover orders, shipments, carriers, and warehouses. Poll for new orders or use webhooks if available for your plan. Batch operations are supported for bulk label creation. ## Twilio SMS Integration Twilio's REST API requires Account SID and Auth Token. The Messaging API endpoint is /2010-04-01/Accounts/{AccountSid}/Messages.json. For two-way messaging, configure a webhook URL to receive incoming messages. Consider using a queue for high-volume outbound SMS to avoid rate limits. # PentaCodes Technical Reference and Integration Documentation # Version 1.0 | Last Updated March 2025 # This document contains technical reference material for common integrations and deployment procedures. ## QuickBooks Online Integration The QuickBooks Online API uses OAuth 2.0 for authentication. You will need to register your application in the Intuit Developer Portal to obtain client credentials. The base URL for the API is https://quickbooks.api.intuit.com/v3/company/{realmId}. Common endpoints include /invoice, /customer, /payment, and /bill. Rate limits apply: 500 requests per minute for production apps. Always implement exponential backoff for 429 responses. ## Stripe Payment Integration Stripe provides both client-side (Stripe.js) and server-side APIs. For PCI compliance, never pass raw card numbers through your server—use Stripe Elements or the Payment Intents API. Webhooks are essential for handling asynchronous events like payment succeeded or subscription renewed. Configure your webhook endpoint to verify signatures using the Stripe-Signature header. ## ShipStation Integration The ShipStation API is REST-based. Authentication uses API key and API secret in the Authorization header. Endpoints cover orders, shipments, carriers, and warehouses. Poll for new orders or use webhooks if available for your plan. Batch operations are supported for bulk label creation. ## Twilio SMS Integration Twilio's REST API requires Account SID and Auth Token. The Messaging API endpoint is /2010-04-01/Accounts/{AccountSid}/Messages.json. For two-way messaging, configure a webhook URL to receive incoming messages. Consider using a queue for high-volume outbound SMS to avoid rate limits. # PentaCodes Technical Reference and Integration Documentation # Version 1.0 | Last Updated March 2025 # This document contains technical reference material for common integrations and deployment procedures. ## QuickBooks Online Integration The QuickBooks Online API uses OAuth 2.0 for authentication. You will need to register your application in the Intuit Developer Portal to obtain client credentials. The base URL for the API is https://quickbooks.api.intuit.com/v3/company/{realmId}. Common endpoints include /invoice, /customer, /payment, and /bill. Rate limits apply: 500 requests per minute for production apps. Always implement exponential backoff for 429 responses. ## Stripe Payment Integration Stripe provides both client-side (Stripe.js) and server-side APIs. For PCI compliance, never pass raw card numbers through your server—use Stripe Elements or the Payment Intents API. Webhooks are essential for handling asynchronous events like payment succeeded or subscription renewed. Configure your webhook endpoint to verify signatures using the Stripe-Signature header. ## ShipStation Integration The ShipStation API is REST-based. Authentication uses API key and API secret in the Authorization header. Endpoints cover orders, shipments, carriers, and warehouses. Poll for new orders or use webhooks if available for your plan. Batch operations are supported for bulk label creation. ## Twilio SMS Integration Twilio's REST API requires Account SID and Auth Token. The Messaging API endpoint is /2010-04-01/Accounts/{AccountSid}/Messages.json. For two-way messaging, configure a webhook URL to receive incoming messages. Consider using a queue for high-volume outbound SMS to avoid rate limits. # PentaCodes Technical Reference and Integration Documentation # Version 1.0 | Last Updated March 2025 # This document contains technical reference material for common integrations and deployment procedures. ## QuickBooks Online Integration The QuickBooks Online API uses OAuth 2.0 for authentication. You will need to register your application in the Intuit Developer Portal to obtain client credentials. The base URL for the API is https://quickbooks.api.intuit.com/v3/company/{realmId}. Common endpoints include /invoice, /customer, /payment, and /bill. Rate limits apply: 500 requests per minute for production apps. Always implement exponential backoff for 429 responses. ## Stripe Payment Integration Stripe provides both client-side (Stripe.js) and server-side APIs. For PCI compliance, never pass raw card numbers through your server—use Stripe Elements or the Payment Intents API. Webhooks are essential for handling asynchronous events like payment succeeded or subscription renewed. Configure your webhook endpoint to verify signatures using the Stripe-Signature header. ## ShipStation Integration The ShipStation API is REST-based. Authentication uses API key and API secret in the Authorization header. Endpoints cover orders, shipments, carriers, and warehouses. Poll for new orders or use webhooks if available for your plan. Batch operations are supported for bulk label creation. ## Twilio SMS Integration Twilio's REST API requires Account SID and Auth Token. The Messaging API endpoint is /2010-04-01/Accounts/{AccountSid}/Messages.json. For two-way messaging, configure a webhook URL to receive incoming messages. Consider using a queue for high-volume outbound SMS to avoid rate limits. # PentaCodes Technical Reference and Integration Documentation # Version 1.0 | Last Updated March 2025 # This document contains technical reference material for common integrations and deployment procedures. ## QuickBooks Online Integration The QuickBooks Online API uses OAuth 2.0 for authentication. You will need to register your application in the Intuit Developer Portal to obtain client credentials. The base URL for the API is https://quickbooks.api.intuit.com/v3/company/{realmId}. Common endpoints include /invoice, /customer, /payment, and /bill. Rate limits apply: 500 requests per minute for production apps. Always implement exponential backoff for 429 responses. ## Stripe Payment Integration Stripe provides both client-side (Stripe.js) and server-side APIs. For PCI compliance, never pass raw card numbers through your server—use Stripe Elements or the Payment Intents API. Webhooks are essential for handling asynchronous events like payment succeeded or subscription renewed. Configure your webhook endpoint to verify signatures using the Stripe-Signature header. ## ShipStation Integration The ShipStation API is REST-based. Authentication uses API key and API secret in the Authorization header. Endpoints cover orders, shipments, carriers, and warehouses. Poll for new orders or use webhooks if available for your plan. Batch operations are supported for bulk label creation. ## Twilio SMS Integration Twilio's REST API requires Account SID and Auth Token. The Messaging API endpoint is /2010-04-01/Accounts/{AccountSid}/Messages.json. For two-way messaging, configure a webhook URL to receive incoming messages. Consider using a queue for high-volume outbound SMS to avoid rate limits. # PentaCodes Technical Reference and Integration Documentation # Version 1.0 | Last Updated March 2025 # This document contains technical reference material for common integrations and deployment procedures. ## QuickBooks Online Integration The QuickBooks Online API uses OAuth 2.0 for authentication. You will need to register your application in the Intuit Developer Portal to obtain client credentials. The base URL for the API is https://quickbooks.api.intuit.com/v3/company/{realmId}. Common endpoints include /invoice, /customer, /payment, and /bill. Rate limits apply: 500 requests per minute for production apps. Always implement exponential backoff for 429 responses. ## Stripe Payment Integration Stripe provides both client-side (Stripe.js) and server-side APIs. For PCI compliance, never pass raw card numbers through your server—use Stripe Elements or the Payment Intents API. Webhooks are essential for handling asynchronous events like payment succeeded or subscription renewed. Configure your webhook endpoint to verify signatures using the Stripe-Signature header. ## ShipStation Integration The ShipStation API is REST-based. Authentication uses API key and API secret in the Authorization header. Endpoints cover orders, shipments, carriers, and warehouses. Poll for new orders or use webhooks if available for your plan. Batch operations are supported for bulk label creation. ## Twilio SMS Integration Twilio's REST API requires Account SID and Auth Token. The Messaging API endpoint is /2010-04-01/Accounts/{AccountSid}/Messages.json. For two-way messaging, configure a webhook URL to receive incoming messages. Consider using a queue for high-volume outbound SMS to avoid rate limits. # PentaCodes Technical Reference and Integration Documentation # Version 1.0 | Last Updated March 2025 # This document contains technical reference material for common integrations and deployment procedures. ## QuickBooks Online Integration The QuickBooks Online API uses OAuth 2.0 for authentication. You will need to register your application in the Intuit Developer Portal to obtain client credentials. The base URL for the API is https://quickbooks.api.intuit.com/v3/company/{realmId}. Common endpoints include /invoice, /customer, /payment, and /bill. Rate limits apply: 500 requests per minute for production apps. Always implement exponential backoff for 429 responses. ## Stripe Payment Integration Stripe provides both client-side (Stripe.js) and server-side APIs. For PCI compliance, never pass raw card numbers through your server—use Stripe Elements or the Payment Intents API. Webhooks are essential for handling asynchronous events like payment succeeded or subscription renewed. Configure your webhook endpoint to verify signatures using the Stripe-Signature header. ## ShipStation Integration The ShipStation API is REST-based. Authentication uses API key and API secret in the Authorization header. Endpoints cover orders, shipments, carriers, and warehouses. Poll for new orders or use webhooks if available for your plan. Batch operations are supported for bulk label creation. ## Twilio SMS Integration Twilio's REST API requires Account SID and Auth Token. The Messaging API endpoint is /2010-04-01/Accounts/{AccountSid}/Messages.json. For two-way messaging, configure a webhook URL to receive incoming messages. Consider using a queue for high-volume outbound SMS to avoid rate limits. # PentaCodes Technical Reference and Integration Documentation # Version 1.0 | Last Updated March 2025 # This document contains technical reference material for common integrations and deployment procedures. ## QuickBooks Online Integration The QuickBooks Online API uses OAuth 2.0 for authentication. You will need to register your application in the Intuit Developer Portal to obtain client credentials. The base URL for the API is https://quickbooks.api.intuit.com/v3/company/{realmId}. Common endpoints include /invoice, /customer, /payment, and /bill. Rate limits apply: 500 requests per minute for production apps. Always implement exponential backoff for 429 responses. ## Stripe Payment Integration Stripe provides both client-side (Stripe.js) and server-side APIs. For PCI compliance, never pass raw card numbers through your server—use Stripe Elements or the Payment Intents API. Webhooks are essential for handling asynchronous events like payment succeeded or subscription renewed. Configure your webhook endpoint to verify signatures using the Stripe-Signature header. ## ShipStation Integration The ShipStation API is REST-based. Authentication uses API key and API secret in the Authorization header. Endpoints cover orders, shipments, carriers, and warehouses. Poll for new orders or use webhooks if available for your plan. Batch operations are supported for bulk label creation. ## Twilio SMS Integration Twilio's REST API requires Account SID and Auth Token. The Messaging API endpoint is /2010-04-01/Accounts/{AccountSid}/Messages.json. For two-way messaging, configure a webhook URL to receive incoming messages. Consider using a queue for high-volume outbound SMS to avoid rate limits. # PentaCodes Technical Reference and Integration Documentation # Version 1.0 | Last Updated March 2025 # This document contains technical reference material for common integrations and deployment procedures. ## QuickBooks Online Integration The QuickBooks Online API uses OAuth 2.0 for authentication. You will need to register your application in the Intuit Developer Portal to obtain client credentials. The base URL for the API is https://quickbooks.api.intuit.com/v3/company/{realmId}. Common endpoints include /invoice, /customer, /payment, and /bill. Rate limits apply: 500 requests per minute for production apps. Always implement exponential backoff for 429 responses. ## Stripe Payment Integration Stripe provides both client-side (Stripe.js) and server-side APIs. For PCI compliance, never pass raw card numbers through your server—use Stripe Elements or the Payment Intents API. Webhooks are essential for handling asynchronous events like payment succeeded or subscription renewed. Configure your webhook endpoint to verify signatures using the Stripe-Signature header. ## ShipStation Integration The ShipStation API is REST-based. Authentication uses API key and API secret in the Authorization header. Endpoints cover orders, shipments, carriers, and warehouses. Poll for new orders or use webhooks if available for your plan. Batch operations are supported for bulk label creation. ## Twilio SMS Integration Twilio's REST API requires Account SID and Auth Token. The Messaging API endpoint is /2010-04-01/Accounts/{AccountSid}/Messages.json. For two-way messaging, configure a webhook URL to receive incoming messages. Consider using a queue for high-volume outbound SMS to avoid rate limits. # PentaCodes Technical Reference and Integration Documentation # Version 1.0 | Last Updated March 2025 # This document contains technical reference material for common integrations and deployment procedures. ## QuickBooks Online Integration The QuickBooks Online API uses OAuth 2.0 for authentication. You will need to register your application in the Intuit Developer Portal to obtain client credentials. The base URL for the API is https://quickbooks.api.intuit.com/v3/company/{realmId}. Common endpoints include /invoice, /customer, /payment, and /bill. Rate limits apply: 500 requests per minute for production apps. Always implement exponential backoff for 429 responses. ## Stripe Payment Integration Stripe provides both client-side (Stripe.js) and server-side APIs. For PCI compliance, never pass raw card numbers through your server—use Stripe Elements or the Payment Intents API. Webhooks are essential for handling asynchronous events like payment succeeded or subscription renewed. Configure your webhook endpoint to verify signatures using the Stripe-Signature header. ## ShipStation Integration The ShipStation API is REST-based. Authentication uses API key and API secret in the Authorization header. Endpoints cover orders, shipments, carriers, and warehouses. Poll for new orders or use webhooks if available for your plan. Batch operations are supported for bulk label creation. ## Twilio SMS Integration Twilio's REST API requires Account SID and Auth Token. The Messaging API endpoint is /2010-04-01/Accounts/{AccountSid}/Messages.json. For two-way messaging, configure a webhook URL to receive incoming messages. Consider using a queue for high-volume outbound SMS to avoid rate limits. # PentaCodes Technical Reference and Integration Documentation # Version 1.0 | Last Updated March 2025 # This document contains technical reference material for common integrations and deployment procedures. ## QuickBooks Online Integration The QuickBooks Online API uses OAuth 2.0 for authentication. You will need to register your application in the Intuit Developer Portal to obtain client credentials. The base URL for the API is https://quickbooks.api.intuit.com/v3/company/{realmId}. Common endpoints include /invoice, /customer, /payment, and /bill. Rate limits apply: 500 requests per minute for production apps. Always implement exponential backoff for 429 responses. ## Stripe Payment Integration Stripe provides both client-side (Stripe.js) and server-side APIs. For PCI compliance, never pass raw card numbers through your server—use Stripe Elements or the Payment Intents API. Webhooks are essential for handling asynchronous events like payment succeeded or subscription renewed. Configure your webhook endpoint to verify signatures using the Stripe-Signature header. ## ShipStation Integration The ShipStation API is REST-based. Authentication uses API key and API secret in the Authorization header. Endpoints cover orders, shipments, carriers, and warehouses. Poll for new orders or use webhooks if available for your plan. Batch operations are supported for bulk label creation. ## Twilio SMS Integration Twilio's REST API requires Account SID and Auth Token. The Messaging API endpoint is /2010-04-01/Accounts/{AccountSid}/Messages.json. For two-way messaging, configure a webhook URL to receive incoming messages. Consider using a queue for high-volume outbound SMS to avoid rate limits. # PentaCodes Technical Reference and Integration Documentation # Version 1.0 | Last Updated March 2025 # This document contains technical reference material for common integrations and deployment procedures. ## QuickBooks Online Integration The QuickBooks Online API uses OAuth 2.0 for authentication. You will need to register your application in the Intuit Developer Portal to obtain client credentials. The base URL for the API is https://quickbooks.api.intuit.com/v3/company/{realmId}. Common endpoints include /invoice, /customer, /payment, and /bill. Rate limits apply: 500 requests per minute for production apps. Always implement exponential backoff for 429 responses. ## Stripe Payment Integration Stripe provides both client-side (Stripe.js) and server-side APIs. For PCI compliance, never pass raw card numbers through your server—use Stripe Elements or the Payment Intents API. Webhooks are essential for handling asynchronous events like payment succeeded or subscription renewed. Configure your webhook endpoint to verify signatures using the Stripe-Signature header. ## ShipStation Integration The ShipStation API is REST-based. Authentication uses API key and API secret in the Authorization header. Endpoints cover orders, shipments, carriers, and warehouses. Poll for new orders or use webhooks if available for your plan. Batch operations are supported for bulk label creation. ## Twilio SMS Integration Twilio's REST API requires Account SID and Auth Token. The Messaging API endpoint is /2010-04-01/Accounts/{AccountSid}/Messages.json. For two-way messaging, configure a webhook URL to receive incoming messages. Consider using a queue for high-volume outbound SMS to avoid rate limits. # PentaCodes Technical Reference and Integration Documentation # Version 1.0 | Last Updated March 2025 # This document contains technical reference material for common integrations and deployment procedures. ## QuickBooks Online Integration The QuickBooks Online API uses OAuth 2.0 for authentication. You will need to register your application in the Intuit Developer Portal to obtain client credentials. The base URL for the API is https://quickbooks.api.intuit.com/v3/company/{realmId}. Common endpoints include /invoice, /customer, /payment, and /bill. Rate limits apply: 500 requests per minute for production apps. Always implement exponential backoff for 429 responses. ## Stripe Payment Integration Stripe provides both client-side (Stripe.js) and server-side APIs. For PCI compliance, never pass raw card numbers through your server—use Stripe Elements or the Payment Intents API. Webhooks are essential for handling asynchronous events like payment succeeded or subscription renewed. Configure your webhook endpoint to verify signatures using the Stripe-Signature header. ## ShipStation Integration The ShipStation API is REST-based. Authentication uses API key and API secret in the Authorization header. Endpoints cover orders, shipments, carriers, and warehouses. Poll for new orders or use webhooks if available for your plan. Batch operations are supported for bulk label creation. ## Twilio SMS Integration Twilio's REST API requires Account SID and Auth Token. The Messaging API endpoint is /2010-04-01/Accounts/{AccountSid}/Messages.json. For two-way messaging, configure a webhook URL to receive incoming messages. Consider using a queue for high-volume outbound SMS to avoid rate limits. # PentaCodes Technical Reference and Integration Documentation # Version 1.0 | Last Updated March 2025 # This document contains technical reference material for common integrations and deployment procedures. ## QuickBooks Online Integration The QuickBooks Online API uses OAuth 2.0 for authentication. You will need to register your application in the Intuit Developer Portal to obtain client credentials. The base URL for the API is https://quickbooks.api.intuit.com/v3/company/{realmId}. Common endpoints include /invoice, /customer, /payment, and /bill. Rate limits apply: 500 requests per minute for production apps. Always implement exponential backoff for 429 responses. ## Stripe Payment Integration Stripe provides both client-side (Stripe.js) and server-side APIs. For PCI compliance, never pass raw card numbers through your server—use Stripe Elements or the Payment Intents API. Webhooks are essential for handling asynchronous events like payment succeeded or subscription renewed. Configure your webhook endpoint to verify signatures using the Stripe-Signature header. ## ShipStation Integration The ShipStation API is REST-based. Authentication uses API key and API secret in the Authorization header. Endpoints cover orders, shipments, carriers, and warehouses. Poll for new orders or use webhooks if available for your plan. Batch operations are supported for bulk label creation. ## Twilio SMS Integration Twilio's REST API requires Account SID and Auth Token. The Messaging API endpoint is /2010-04-01/Accounts/{AccountSid}/Messages.json. For two-way messaging, configure a webhook URL to receive incoming messages. Consider using a queue for high-volume outbound SMS to avoid rate limits. # PentaCodes Technical Reference and Integration Documentation # Version 1.0 | Last Updated March 2025 # This document contains technical reference material for common integrations and deployment procedures. ## QuickBooks Online Integration The QuickBooks Online API uses OAuth 2.0 for authentication. You will need to register your application in the Intuit Developer Portal to obtain client credentials. The base URL for the API is https://quickbooks.api.intuit.com/v3/company/{realmId}. Common endpoints include /invoice, /customer, /payment, and /bill. Rate limits apply: 500 requests per minute for production apps. Always implement exponential backoff for 429 responses. ## Stripe Payment Integration Stripe provides both client-side (Stripe.js) and server-side APIs. For PCI compliance, never pass raw card numbers through your server—use Stripe Elements or the Payment Intents API. Webhooks are essential for handling asynchronous events like payment succeeded or subscription renewed. Configure your webhook endpoint to verify signatures using the Stripe-Signature header. ## ShipStation Integration The ShipStation API is REST-based. Authentication uses API key and API secret in the Authorization header. Endpoints cover orders, shipments, carriers, and warehouses. Poll for new orders or use webhooks if available for your plan. Batch operations are supported for bulk label creation. ## Twilio SMS Integration Twilio's REST API requires Account SID and Auth Token. The Messaging API endpoint is /2010-04-01/Accounts/{AccountSid}/Messages.json. For two-way messaging, configure a webhook URL to receive incoming messages. Consider using a queue for high-volume outbound SMS to avoid rate limits. # PentaCodes Technical Reference and Integration Documentation # Version 1.0 | Last Updated March 2025 # This document contains technical reference material for common integrations and deployment procedures. ## QuickBooks Online Integration The QuickBooks Online API uses OAuth 2.0 for authentication. You will need to register your application in the Intuit Developer Portal to obtain client credentials. The base URL for the API is https://quickbooks.api.intuit.com/v3/company/{realmId}. Common endpoints include /invoice, /customer, /payment, and /bill. Rate limits apply: 500 requests per minute for production apps. Always implement exponential backoff for 429 responses. ## Stripe Payment Integration Stripe provides both client-side (Stripe.js) and server-side APIs. For PCI compliance, never pass raw card numbers through your server—use Stripe Elements or the Payment Intents API. Webhooks are essential for handling asynchronous events like payment succeeded or subscription renewed. Configure your webhook endpoint to verify signatures using the Stripe-Signature header. ## ShipStation Integration The ShipStation API is REST-based. Authentication uses API key and API secret in the Authorization header. Endpoints cover orders, shipments, carriers, and warehouses. Poll for new orders or use webhooks if available for your plan. Batch operations are supported for bulk label creation. ## Twilio SMS Integration Twilio's REST API requires Account SID and Auth Token. The Messaging API endpoint is /2010-04-01/Accounts/{AccountSid}/Messages.json. For two-way messaging, configure a webhook URL to receive incoming messages. Consider using a queue for high-volume outbound SMS to avoid rate limits. # PentaCodes Technical Reference and Integration Documentation # Version 1.0 | Last Updated March 2025 # This document contains technical reference material for common integrations and deployment procedures. ## QuickBooks Online Integration The QuickBooks Online API uses OAuth 2.0 for authentication. You will need to register your application in the Intuit Developer Portal to obtain client credentials. The base URL for the API is https://quickbooks.api.intuit.com/v3/company/{realmId}. Common endpoints include /invoice, /customer, /payment, and /bill. Rate limits apply: 500 requests per minute for production apps. Always implement exponential backoff for 429 responses. ## Stripe Payment Integration Stripe provides both client-side (Stripe.js) and server-side APIs. For PCI compliance, never pass raw card numbers through your server—use Stripe Elements or the Payment Intents API. Webhooks are essential for handling asynchronous events like payment succeeded or subscription renewed. Configure your webhook endpoint to verify signatures using the Stripe-Signature header. ## ShipStation Integration The ShipStation API is REST-based. Authentication uses API key and API secret in the Authorization header. Endpoints cover orders, shipments, carriers, and warehouses. Poll for new orders or use webhooks if available for your plan. Batch operations are supported for bulk label creation. ## Twilio SMS Integration Twilio's REST API requires Account SID and Auth Token. The Messaging API endpoint is /2010-04-01/Accounts/{AccountSid}/Messages.json. For two-way messaging, configure a webhook URL to receive incoming messages. Consider using a queue for high-volume outbound SMS to avoid rate limits. # PentaCodes Technical Reference and Integration Documentation # Version 1.0 | Last Updated March 2025 # This document contains technical reference material for common integrations and deployment procedures. ## QuickBooks Online Integration The QuickBooks Online API uses OAuth 2.0 for authentication. You will need to register your application in the Intuit Developer Portal to obtain client credentials. The base URL for the API is https://quickbooks.api.intuit.com/v3/company/{realmId}. Common endpoints include /invoice, /customer, /payment, and /bill. Rate limits apply: 500 requests per minute for production apps. Always implement exponential backoff for 429 responses. ## Stripe Payment Integration Stripe provides both client-side (Stripe.js) and server-side APIs. For PCI compliance, never pass raw card numbers through your server—use Stripe Elements or the Payment Intents API. Webhooks are essential for handling asynchronous events like payment succeeded or subscription renewed. Configure your webhook endpoint to verify signatures using the Stripe-Signature header. ## ShipStation Integration The ShipStation API is REST-based. Authentication uses API key and API secret in the Authorization header. Endpoints cover orders, shipments, carriers, and warehouses. Poll for new orders or use webhooks if available for your plan. Batch operations are supported for bulk label creation. ## Twilio SMS Integration Twilio's REST API requires Account SID and Auth Token. The Messaging API endpoint is /2010-04-01/Accounts/{AccountSid}/Messages.json. For two-way messaging, configure a webhook URL to receive incoming messages. Consider using a queue for high-volume outbound SMS to avoid rate limits. # PentaCodes Technical Reference and Integration Documentation # Version 1.0 | Last Updated March 2025 # This document contains technical reference material for common integrations and deployment procedures. ## QuickBooks Online Integration The QuickBooks Online API uses OAuth 2.0 for authentication. You will need to register your application in the Intuit Developer Portal to obtain client credentials. The base URL for the API is https://quickbooks.api.intuit.com/v3/company/{realmId}. Common endpoints include /invoice, /customer, /payment, and /bill. Rate limits apply: 500 requests per minute for production apps. Always implement exponential backoff for 429 responses. ## Stripe Payment Integration Stripe provides both client-side (Stripe.js) and server-side APIs. For PCI compliance, never pass raw card numbers through your server—use Stripe Elements or the Payment Intents API. Webhooks are essential for handling asynchronous events like payment succeeded or subscription renewed. Configure your webhook endpoint to verify signatures using the Stripe-Signature header. ## ShipStation Integration The ShipStation API is REST-based. Authentication uses API key and API secret in the Authorization header. Endpoints cover orders, shipments, carriers, and warehouses. Poll for new orders or use webhooks if available for your plan. Batch operations are supported for bulk label creation. ## Twilio SMS Integration Twilio's REST API requires Account SID and Auth Token. The Messaging API endpoint is /2010-04-01/Accounts/{AccountSid}/Messages.json. For two-way messaging, configure a webhook URL to receive incoming messages. Consider using a queue for high-volume outbound SMS to avoid rate limits. # PentaCodes Technical Reference and Integration Documentation # Version 1.0 | Last Updated March 2025 # This document contains technical reference material for common integrations and deployment procedures. ## QuickBooks Online Integration The QuickBooks Online API uses OAuth 2.0 for authentication. You will need to register your application in the Intuit Developer Portal to obtain client credentials. The base URL for the API is https://quickbooks.api.intuit.com/v3/company/{realmId}. Common endpoints include /invoice, /customer, /payment, and /bill. Rate limits apply: 500 requests per minute for production apps. Always implement exponential backoff for 429 responses. ## Stripe Payment Integration Stripe provides both client-side (Stripe.js) and server-side APIs. For PCI compliance, never pass raw card numbers through your server—use Stripe Elements or the Payment Intents API. Webhooks are essential for handling asynchronous events like payment succeeded or subscription renewed. Configure your webhook endpoint to verify signatures using the Stripe-Signature header. ## ShipStation Integration The ShipStation API is REST-based. Authentication uses API key and API secret in the Authorization header. Endpoints cover orders, shipments, carriers, and warehouses. Poll for new orders or use webhooks if available for your plan. Batch operations are supported for bulk label creation. ## Twilio SMS Integration Twilio's REST API requires Account SID and Auth Token. The Messaging API endpoint is /2010-04-01/Accounts/{AccountSid}/Messages.json. For two-way messaging, configure a webhook URL to receive incoming messages. Consider using a queue for high-volume outbound SMS to avoid rate limits. # PentaCodes Technical Reference and Integration Documentation # Version 1.0 | Last Updated March 2025 # This document contains technical reference material for common integrations and deployment procedures. ## QuickBooks Online Integration The QuickBooks Online API uses OAuth 2.0 for authentication. You will need to register your application in the Intuit Developer Portal to obtain client credentials. The base URL for the API is https://quickbooks.api.intuit.com/v3/company/{realmId}. Common endpoints include /invoice, /customer, /payment, and /bill. Rate limits apply: 500 requests per minute for production apps. Always implement exponential backoff for 429 responses. ## Stripe Payment Integration Stripe provides both client-side (Stripe.js) and server-side APIs. For PCI compliance, never pass raw card numbers through your server—use Stripe Elements or the Payment Intents API. Webhooks are essential for handling asynchronous events like payment succeeded or subscription renewed. Configure your webhook endpoint to verify signatures using the Stripe-Signature header. ## ShipStation Integration The ShipStation API is REST-based. Authentication uses API key and API secret in the Authorization header. Endpoints cover orders, shipments, carriers, and warehouses. Poll for new orders or use webhooks if available for your plan. Batch operations are supported for bulk label creation. ## Twilio SMS Integration Twilio's REST API requires Account SID and Auth Token. The Messaging API endpoint is /2010-04-01/Accounts/{AccountSid}/Messages.json. For two-way messaging, configure a webhook URL to receive incoming messages. Consider using a queue for high-volume outbound SMS to avoid rate limits. # PentaCodes Technical Reference and Integration Documentation # Version 1.0 | Last Updated March 2025 # This document contains technical reference material for common integrations and deployment procedures. ## QuickBooks Online Integration The QuickBooks Online API uses OAuth 2.0 for authentication. You will need to register your application in the Intuit Developer Portal to obtain client credentials. The base URL for the API is https://quickbooks.api.intuit.com/v3/company/{realmId}. Common endpoints include /invoice, /customer, /payment, and /bill. Rate limits apply: 500 requests per minute for production apps. Always implement exponential backoff for 429 responses. ## Stripe Payment Integration Stripe provides both client-side (Stripe.js) and server-side APIs. For PCI compliance, never pass raw card numbers through your server—use Stripe Elements or the Payment Intents API. Webhooks are essential for handling asynchronous events like payment succeeded or subscription renewed. Configure your webhook endpoint to verify signatures using the Stripe-Signature header. ## ShipStation Integration The ShipStation API is REST-based. Authentication uses API key and API secret in the Authorization header. Endpoints cover orders, shipments, carriers, and warehouses. Poll for new orders or use webhooks if available for your plan. Batch operations are supported for bulk label creation. ## Twilio SMS Integration Twilio's REST API requires Account SID and Auth Token. The Messaging API endpoint is /2010-04-01/Accounts/{AccountSid}/Messages.json. For two-way messaging, configure a webhook URL to receive incoming messages. Consider using a queue for high-volume outbound SMS to avoid rate limits. # PentaCodes Technical Reference and Integration Documentation # Version 1.0 | Last Updated March 2025 # This document contains technical reference material for common integrations and deployment procedures. ## QuickBooks Online Integration The QuickBooks Online API uses OAuth 2.0 for authentication. You will need to register your application in the Intuit Developer Portal to obtain client credentials. The base URL for the API is https://quickbooks.api.intuit.com/v3/company/{realmId}. Common endpoints include /invoice, /customer, /payment, and /bill. Rate limits apply: 500 requests per minute for production apps. Always implement exponential backoff for 429 responses. ## Stripe Payment Integration Stripe provides both client-side (Stripe.js) and server-side APIs. For PCI compliance, never pass raw card numbers through your server—use Stripe Elements or the Payment Intents API. Webhooks are essential for handling asynchronous events like payment succeeded or subscription renewed. Configure your webhook endpoint to verify signatures using the Stripe-Signature header. ## ShipStation Integration The ShipStation API is REST-based. Authentication uses API key and API secret in the Authorization header. Endpoints cover orders, shipments, carriers, and warehouses. Poll for new orders or use webhooks if available for your plan. Batch operations are supported for bulk label creation. ## Twilio SMS Integration Twilio's REST API requires Account SID and Auth Token. The Messaging API endpoint is /2010-04-01/Accounts/{AccountSid}/Messages.json. For two-way messaging, configure a webhook URL to receive incoming messages. Consider using a queue for high-volume outbound SMS to avoid rate limits. # PentaCodes Technical Reference and Integration Documentation # Version 1.0 | Last Updated March 2025 # This document contains technical reference material for common integrations and deployment procedures. ## QuickBooks Online Integration The QuickBooks Online API uses OAuth 2.0 for authentication. You will need to register your application in the Intuit Developer Portal to obtain client credentials. The base URL for the API is https://quickbooks.api.intuit.com/v3/company/{realmId}. Common endpoints include /invoice, /customer, /payment, and /bill. Rate limits apply: 500 requests per minute for production apps. Always implement exponential backoff for 429 responses. ## Stripe Payment Integration Stripe provides both client-side (Stripe.js) and server-side APIs. For PCI compliance, never pass raw card numbers through your server—use Stripe Elements or the Payment Intents API. Webhooks are essential for handling asynchronous events like payment succeeded or subscription renewed. Configure your webhook endpoint to verify signatures using the Stripe-Signature header. ## ShipStation Integration The ShipStation API is REST-based. Authentication uses API key and API secret in the Authorization header. Endpoints cover orders, shipments, carriers, and warehouses. Poll for new orders or use webhooks if available for your plan. Batch operations are supported for bulk label creation. ## Twilio SMS Integration Twilio's REST API requires Account SID and Auth Token. The Messaging API endpoint is /2010-04-01/Accounts/{AccountSid}/Messages.json. For two-way messaging, configure a webhook URL to receive incoming messages. Consider using a queue for high-volume outbound SMS to avoid rate limits. # PentaCodes Technical Reference and Integration Documentation # Version 1.0 | Last Updated March 2025 # This document contains technical reference material for common integrations and deployment procedures. ## QuickBooks Online Integration The QuickBooks Online API uses OAuth 2.0 for authentication. You will need to register your application in the Intuit Developer Portal to obtain client credentials. The base URL for the API is https://quickbooks.api.intuit.com/v3/company/{realmId}. Common endpoints include /invoice, /customer, /payment, and /bill. Rate limits apply: 500 requests per minute for production apps. Always implement exponential backoff for 429 responses. ## Stripe Payment Integration Stripe provides both client-side (Stripe.js) and server-side APIs. For PCI compliance, never pass raw card numbers through your server—use Stripe Elements or the Payment Intents API. Webhooks are essential for handling asynchronous events like payment succeeded or subscription renewed. Configure your webhook endpoint to verify signatures using the Stripe-Signature header. ## ShipStation Integration The ShipStation API is REST-based. Authentication uses API key and API secret in the Authorization header. Endpoints cover orders, shipments, carriers, and warehouses. Poll for new orders or use webhooks if available for your plan. Batch operations are supported for bulk label creation. ## Twilio SMS Integration Twilio's REST API requires Account SID and Auth Token. The Messaging API endpoint is /2010-04-01/Accounts/{AccountSid}/Messages.json. For two-way messaging, configure a webhook URL to receive incoming messages. Consider using a queue for high-volume outbound SMS to avoid rate limits. # PentaCodes Technical Reference and Integration Documentation # Version 1.0 | Last Updated March 2025 # This document contains technical reference material for common integrations and deployment procedures. ## QuickBooks Online Integration The QuickBooks Online API uses OAuth 2.0 for authentication. You will need to register your application in the Intuit Developer Portal to obtain client credentials. The base URL for the API is https://quickbooks.api.intuit.com/v3/company/{realmId}. Common endpoints include /invoice, /customer, /payment, and /bill. Rate limits apply: 500 requests per minute for production apps. Always implement exponential backoff for 429 responses. ## Stripe Payment Integration Stripe provides both client-side (Stripe.js) and server-side APIs. For PCI compliance, never pass raw card numbers through your server—use Stripe Elements or the Payment Intents API. Webhooks are essential for handling asynchronous events like payment succeeded or subscription renewed. Configure your webhook endpoint to verify signatures using the Stripe-Signature header. ## ShipStation Integration The ShipStation API is REST-based. Authentication uses API key and API secret in the Authorization header. Endpoints cover orders, shipments, carriers, and warehouses. Poll for new orders or use webhooks if available for your plan. Batch operations are supported for bulk label creation. ## Twilio SMS Integration Twilio's REST API requires Account SID and Auth Token. The Messaging API endpoint is /2010-04-01/Accounts/{AccountSid}/Messages.json. For two-way messaging, configure a webhook URL to receive incoming messages. Consider using a queue for high-volume outbound SMS to avoid rate limits. # PentaCodes Technical Reference and Integration Documentation # Version 1.0 | Last Updated March 2025 # This document contains technical reference material for common integrations and deployment procedures. ## QuickBooks Online Integration The QuickBooks Online API uses OAuth 2.0 for authentication. You will need to register your application in the Intuit Developer Portal to obtain client credentials. The base URL for the API is https://quickbooks.api.intuit.com/v3/company/{realmId}. Common endpoints include /invoice, /customer, /payment, and /bill. Rate limits apply: 500 requests per minute for production apps. Always implement exponential backoff for 429 responses. ## Stripe Payment Integration Stripe provides both client-side (Stripe.js) and server-side APIs. For PCI compliance, never pass raw card numbers through your server—use Stripe Elements or the Payment Intents API. Webhooks are essential for handling asynchronous events like payment succeeded or subscription renewed. Configure your webhook endpoint to verify signatures using the Stripe-Signature header. ## ShipStation Integration The ShipStation API is REST-based. Authentication uses API key and API secret in the Authorization header. Endpoints cover orders, shipments, carriers, and warehouses. Poll for new orders or use webhooks if available for your plan. Batch operations are supported for bulk label creation. ## Twilio SMS Integration Twilio's REST API requires Account SID and Auth Token. The Messaging API endpoint is /2010-04-01/Accounts/{AccountSid}/Messages.json. For two-way messaging, configure a webhook URL to receive incoming messages. Consider using a queue for high-volume outbound SMS to avoid rate limits. # PentaCodes Technical Reference and Integration Documentation # Version 1.0 | Last Updated March 2025 # This document contains technical reference material for common integrations and deployment procedures. ## QuickBooks Online Integration The QuickBooks Online API uses OAuth 2.0 for authentication. You will need to register your application in the Intuit Developer Portal to obtain client credentials. The base URL for the API is https://quickbooks.api.intuit.com/v3/company/{realmId}. Common endpoints include /invoice, /customer, /payment, and /bill. Rate limits apply: 500 requests per minute for production apps. Always implement exponential backoff for 429 responses. ## Stripe Payment Integration Stripe provides both client-side (Stripe.js) and server-side APIs. For PCI compliance, never pass raw card numbers through your server—use Stripe Elements or the Payment Intents API. Webhooks are essential for handling asynchronous events like payment succeeded or subscription renewed. Configure your webhook endpoint to verify signatures using the Stripe-Signature header. ## ShipStation Integration The ShipStation API is REST-based. Authentication uses API key and API secret in the Authorization header. Endpoints cover orders, shipments, carriers, and warehouses. Poll for new orders or use webhooks if available for your plan. Batch operations are supported for bulk label creation. ## Twilio SMS Integration Twilio's REST API requires Account SID and Auth Token. The Messaging API endpoint is /2010-04-01/Accounts/{AccountSid}/Messages.json. For two-way messaging, configure a webhook URL to receive incoming messages. Consider using a queue for high-volume outbound SMS to avoid rate limits. # PentaCodes Technical Reference and Integration Documentation # Version 1.0 | Last Updated March 2025 # This document contains technical reference material for common integrations and deployment procedures. ## QuickBooks Online Integration The QuickBooks Online API uses OAuth 2.0 for authentication. You will need to register your application in the Intuit Developer Portal to obtain client credentials. The base URL for the API is https://quickbooks.api.intuit.com/v3/company/{realmId}. Common endpoints include /invoice, /customer, /payment, and /bill. Rate limits apply: 500 requests per minute for production apps. Always implement exponential backoff for 429 responses. ## Stripe Payment Integration Stripe provides both client-side (Stripe.js) and server-side APIs. For PCI compliance, never pass raw card numbers through your server—use Stripe Elements or the Payment Intents API. Webhooks are essential for handling asynchronous events like payment succeeded or subscription renewed. Configure your webhook endpoint to verify signatures using the Stripe-Signature header. ## ShipStation Integration The ShipStation API is REST-based. Authentication uses API key and API secret in the Authorization header. Endpoints cover orders, shipments, carriers, and warehouses. Poll for new orders or use webhooks if available for your plan. Batch operations are supported for bulk label creation. ## Twilio SMS Integration Twilio's REST API requires Account SID and Auth Token. The Messaging API endpoint is /2010-04-01/Accounts/{AccountSid}/Messages.json. For two-way messaging, configure a webhook URL to receive incoming messages. Consider using a queue for high-volume outbound SMS to avoid rate limits. # PentaCodes Technical Reference and Integration Documentation # Version 1.0 | Last Updated March 2025 # This document contains technical reference material for common integrations and deployment procedures. ## QuickBooks Online Integration The QuickBooks Online API uses OAuth 2.0 for authentication. You will need to register your application in the Intuit Developer Portal to obtain client credentials. The base URL for the API is https://quickbooks.api.intuit.com/v3/company/{realmId}. Common endpoints include /invoice, /customer, /payment, and /bill. Rate limits apply: 500 requests per minute for production apps. Always implement exponential backoff for 429 responses. ## Stripe Payment Integration Stripe provides both client-side (Stripe.js) and server-side APIs. For PCI compliance, never pass raw card numbers through your server—use Stripe Elements or the Payment Intents API. Webhooks are essential for handling asynchronous events like payment succeeded or subscription renewed. Configure your webhook endpoint to verify signatures using the Stripe-Signature header. ## ShipStation Integration The ShipStation API is REST-based. Authentication uses API key and API secret in the Authorization header. Endpoints cover orders, shipments, carriers, and warehouses. Poll for new orders or use webhooks if available for your plan. Batch operations are supported for bulk label creation. ## Twilio SMS Integration Twilio's REST API requires Account SID and Auth Token. The Messaging API endpoint is /2010-04-01/Accounts/{AccountSid}/Messages.json. For two-way messaging, configure a webhook URL to receive incoming messages. Consider using a queue for high-volume outbound SMS to avoid rate limits. # PentaCodes Technical Reference and Integration Documentation # Version 1.0 | Last Updated March 2025 # This document contains technical reference material for common integrations and deployment procedures. ## QuickBooks Online Integration The QuickBooks Online API uses OAuth 2.0 for authentication. You will need to register your application in the Intuit Developer Portal to obtain client credentials. The base URL for the API is https://quickbooks.api.intuit.com/v3/company/{realmId}. Common endpoints include /invoice, /customer, /payment, and /bill. Rate limits apply: 500 requests per minute for production apps. Always implement exponential backoff for 429 responses. ## Stripe Payment Integration Stripe provides both client-side (Stripe.js) and server-side APIs. For PCI compliance, never pass raw card numbers through your server—use Stripe Elements or the Payment Intents API. Webhooks are essential for handling asynchronous events like payment succeeded or subscription renewed. Configure your webhook endpoint to verify signatures using the Stripe-Signature header. ## ShipStation Integration The ShipStation API is REST-based. Authentication uses API key and API secret in the Authorization header. Endpoints cover orders, shipments, carriers, and warehouses. Poll for new orders or use webhooks if available for your plan. Batch operations are supported for bulk label creation. ## Twilio SMS Integration Twilio's REST API requires Account SID and Auth Token. The Messaging API endpoint is /2010-04-01/Accounts/{AccountSid}/Messages.json. For two-way messaging, configure a webhook URL to receive incoming messages. Consider using a queue for high-volume outbound SMS to avoid rate limits. # PentaCodes Technical Reference and Integration Documentation # Version 1.0 | Last Updated March 2025 # This document contains technical reference material for common integrations and deployment procedures. ## QuickBooks Online Integration The QuickBooks Online API uses OAuth 2.0 for authentication. You will need to register your application in the Intuit Developer Portal to obtain client credentials. The base URL for the API is https://quickbooks.api.intuit.com/v3/company/{realmId}. Common endpoints include /invoice, /customer, /payment, and /bill. Rate limits apply: 500 requests per minute for production apps. Always implement exponential backoff for 429 responses. ## Stripe Payment Integration Stripe provides both client-side (Stripe.js) and server-side APIs. For PCI compliance, never pass raw card numbers through your server—use Stripe Elements or the Payment Intents API. Webhooks are essential for handling asynchronous events like payment succeeded or subscription renewed. Configure your webhook endpoint to verify signatures using the Stripe-Signature header. ## ShipStation Integration The ShipStation API is REST-based. Authentication uses API key and API secret in the Authorization header. Endpoints cover orders, shipments, carriers, and warehouses. Poll for new orders or use webhooks if available for your plan. Batch operations are supported for bulk label creation. ## Twilio SMS Integration Twilio's REST API requires Account SID and Auth Token. The Messaging API endpoint is /2010-04-01/Accounts/{AccountSid}/Messages.json. For two-way messaging, configure a webhook URL to receive incoming messages. Consider using a queue for high-volume outbound SMS to avoid rate limits. # PentaCodes Technical Reference and Integration Documentation # Version 1.0 | Last Updated March 2025 # This document contains technical reference material for common integrations and deployment procedures. ## QuickBooks Online Integration The QuickBooks Online API uses OAuth 2.0 for authentication. You will need to register your application in the Intuit Developer Portal to obtain client credentials. The base URL for the API is https://quickbooks.api.intuit.com/v3/company/{realmId}. Common endpoints include /invoice, /customer, /payment, and /bill. Rate limits apply: 500 requests per minute for production apps. Always implement exponential backoff for 429 responses. ## Stripe Payment Integration Stripe provides both client-side (Stripe.js) and server-side APIs. For PCI compliance, never pass raw card numbers through your server—use Stripe Elements or the Payment Intents API. Webhooks are essential for handling asynchronous events like payment succeeded or subscription renewed. Configure your webhook endpoint to verify signatures using the Stripe-Signature header. ## ShipStation Integration The ShipStation API is REST-based. Authentication uses API key and API secret in the Authorization header. Endpoints cover orders, shipments, carriers, and warehouses. Poll for new orders or use webhooks if available for your plan. Batch operations are supported for bulk label creation. ## Twilio SMS Integration Twilio's REST API requires Account SID and Auth Token. The Messaging API endpoint is /2010-04-01/Accounts/{AccountSid}/Messages.json. For two-way messaging, configure a webhook URL to receive incoming messages. Consider using a queue for high-volume outbound SMS to avoid rate limits. # PentaCodes Technical Reference and Integration Documentation # Version 1.0 | Last Updated March 2025 # This document contains technical reference material for common integrations and deployment procedures. ## QuickBooks Online Integration The QuickBooks Online API uses OAuth 2.0 for authentication. You will need to register your application in the Intuit Developer Portal to obtain client credentials. The base URL for the API is https://quickbooks.api.intuit.com/v3/company/{realmId}. Common endpoints include /invoice, /customer, /payment, and /bill. Rate limits apply: 500 requests per minute for production apps. Always implement exponential backoff for 429 responses. ## Stripe Payment Integration Stripe provides both client-side (Stripe.js) and server-side APIs. For PCI compliance, never pass raw card numbers through your server—use Stripe Elements or the Payment Intents API. Webhooks are essential for handling asynchronous events like payment succeeded or subscription renewed. Configure your webhook endpoint to verify signatures using the Stripe-Signature header. ## ShipStation Integration The ShipStation API is REST-based. Authentication uses API key and API secret in the Authorization header. Endpoints cover orders, shipments, carriers, and warehouses. Poll for new orders or use webhooks if available for your plan. Batch operations are supported for bulk label creation. ## Twilio SMS Integration Twilio's REST API requires Account SID and Auth Token. The Messaging API endpoint is /2010-04-01/Accounts/{AccountSid}/Messages.json. For two-way messaging, configure a webhook URL to receive incoming messages. Consider using a queue for high-volume outbound SMS to avoid rate limits. # PentaCodes Technical Reference and Integration Documentation # Version 1.0 | Last Updated March 2025 # This document contains technical reference material for common integrations and deployment procedures. ## QuickBooks Online Integration The QuickBooks Online API uses OAuth 2.0 for authentication. You will need to register your application in the Intuit Developer Portal to obtain client credentials. The base URL for the API is https://quickbooks.api.intuit.com/v3/company/{realmId}. Common endpoints include /invoice, /customer, /payment, and /bill. Rate limits apply: 500 requests per minute for production apps. Always implement exponential backoff for 429 responses. ## Stripe Payment Integration Stripe provides both client-side (Stripe.js) and server-side APIs. For PCI compliance, never pass raw card numbers through your server—use Stripe Elements or the Payment Intents API. Webhooks are essential for handling asynchronous events like payment succeeded or subscription renewed. Configure your webhook endpoint to verify signatures using the Stripe-Signature header. ## ShipStation Integration The ShipStation API is REST-based. Authentication uses API key and API secret in the Authorization header. Endpoints cover orders, shipments, carriers, and warehouses. Poll for new orders or use webhooks if available for your plan. Batch operations are supported for bulk label creation. ## Twilio SMS Integration Twilio's REST API requires Account SID and Auth Token. The Messaging API endpoint is /2010-04-01/Accounts/{AccountSid}/Messages.json. For two-way messaging, configure a webhook URL to receive incoming messages. Consider using a queue for high-volume outbound SMS to avoid rate limits. # PentaCodes Technical Reference and Integration Documentation # Version 1.0 | Last Updated March 2025 # This document contains technical reference material for common integrations and deployment procedures. ## QuickBooks Online Integration The QuickBooks Online API uses OAuth 2.0 for authentication. You will need to register your application in the Intuit Developer Portal to obtain client credentials. The base URL for the API is https://quickbooks.api.intuit.com/v3/company/{realmId}. Common endpoints include /invoice, /customer, /payment, and /bill. Rate limits apply: 500 requests per minute for production apps. Always implement exponential backoff for 429 responses. ## Stripe Payment Integration Stripe provides both client-side (Stripe.js) and server-side APIs. For PCI compliance, never pass raw card numbers through your server—use Stripe Elements or the Payment Intents API. Webhooks are essential for handling asynchronous events like payment succeeded or subscription renewed. Configure your webhook endpoint to verify signatures using the Stripe-Signature header. ## ShipStation Integration The ShipStation API is REST-based. Authentication uses API key and API secret in the Authorization header. Endpoints cover orders, shipments, carriers, and warehouses. Poll for new orders or use webhooks if available for your plan. Batch operations are supported for bulk label creation. ## Twilio SMS Integration Twilio's REST API requires Account SID and Auth Token. The Messaging API endpoint is /2010-04-01/Accounts/{AccountSid}/Messages.json. For two-way messaging, configure a webhook URL to receive incoming messages. Consider using a queue for high-volume outbound SMS to avoid rate limits. # PentaCodes Technical Reference and Integration Documentation # Version 1.0 | Last Updated March 2025 # This document contains technical reference material for common integrations and deployment procedures. ## QuickBooks Online Integration The QuickBooks Online API uses OAuth 2.0 for authentication. You will need to register your application in the Intuit Developer Portal to obtain client credentials. The base URL for the API is https://quickbooks.api.intuit.com/v3/company/{realmId}. Common endpoints include /invoice, /customer, /payment, and /bill. Rate limits apply: 500 requests per minute for production apps. Always implement exponential backoff for 429 responses. ## Stripe Payment Integration Stripe provides both client-side (Stripe.js) and server-side APIs. For PCI compliance, never pass raw card numbers through your server—use Stripe Elements or the Payment Intents API. Webhooks are essential for handling asynchronous events like payment succeeded or subscription renewed. Configure your webhook endpoint to verify signatures using the Stripe-Signature header. ## ShipStation Integration The ShipStation API is REST-based. Authentication uses API key and API secret in the Authorization header. Endpoints cover orders, shipments, carriers, and warehouses. Poll for new orders or use webhooks if available for your plan. Batch operations are supported for bulk label creation. ## Twilio SMS Integration Twilio's REST API requires Account SID and Auth Token. The Messaging API endpoint is /2010-04-01/Accounts/{AccountSid}/Messages.json. For two-way messaging, configure a webhook URL to receive incoming messages. Consider using a queue for high-volume outbound SMS to avoid rate limits. # PentaCodes Technical Reference and Integration Documentation # Version 1.0 | Last Updated March 2025 # This document contains technical reference material for common integrations and deployment procedures. ## QuickBooks Online Integration The QuickBooks Online API uses OAuth 2.0 for authentication. You will need to register your application in the Intuit Developer Portal to obtain client credentials. The base URL for the API is https://quickbooks.api.intuit.com/v3/company/{realmId}. Common endpoints include /invoice, /customer, /payment, and /bill. Rate limits apply: 500 requests per minute for production apps. Always implement exponential backoff for 429 responses. ## Stripe Payment Integration Stripe provides both client-side (Stripe.js) and server-side APIs. For PCI compliance, never pass raw card numbers through your server—use Stripe Elements or the Payment Intents API. Webhooks are essential for handling asynchronous events like payment succeeded or subscription renewed. Configure your webhook endpoint to verify signatures using the Stripe-Signature header. ## ShipStation Integration The ShipStation API is REST-based. Authentication uses API key and API secret in the Authorization header. Endpoints cover orders, shipments, carriers, and warehouses. Poll for new orders or use webhooks if available for your plan. Batch operations are supported for bulk label creation. ## Twilio SMS Integration Twilio's REST API requires Account SID and Auth Token. The Messaging API endpoint is /2010-04-01/Accounts/{AccountSid}/Messages.json. For two-way messaging, configure a webhook URL to receive incoming messages. Consider using a queue for high-volume outbound SMS to avoid rate limits. # PentaCodes Technical Reference and Integration Documentation # Version 1.0 | Last Updated March 2025 # This document contains technical reference material for common integrations and deployment procedures. ## QuickBooks Online Integration The QuickBooks Online API uses OAuth 2.0 for authentication. You will need to register your application in the Intuit Developer Portal to obtain client credentials. The base URL for the API is https://quickbooks.api.intuit.com/v3/company/{realmId}. Common endpoints include /invoice, /customer, /payment, and /bill. Rate limits apply: 500 requests per minute for production apps. Always implement exponential backoff for 429 responses. ## Stripe Payment Integration Stripe provides both client-side (Stripe.js) and server-side APIs. For PCI compliance, never pass raw card numbers through your server—use Stripe Elements or the Payment Intents API. Webhooks are essential for handling asynchronous events like payment succeeded or subscription renewed. Configure your webhook endpoint to verify signatures using the Stripe-Signature header. ## ShipStation Integration The ShipStation API is REST-based. Authentication uses API key and API secret in the Authorization header. Endpoints cover orders, shipments, carriers, and warehouses. Poll for new orders or use webhooks if available for your plan. Batch operations are supported for bulk label creation. ## Twilio SMS Integration Twilio's REST API requires Account SID and Auth Token. The Messaging API endpoint is /2010-04-01/Accounts/{AccountSid}/Messages.json. For two-way messaging, configure a webhook URL to receive incoming messages. Consider using a queue for high-volume outbound SMS to avoid rate limits. # PentaCodes Technical Reference and Integration Documentation # Version 1.0 | Last Updated March 2025 # This document contains technical reference material for common integrations and deployment procedures. ## QuickBooks Online Integration The QuickBooks Online API uses OAuth 2.0 for authentication. You will need to register your application in the Intuit Developer Portal to obtain client credentials. The base URL for the API is https://quickbooks.api.intuit.com/v3/company/{realmId}. Common endpoints include /invoice, /customer, /payment, and /bill. Rate limits apply: 500 requests per minute for production apps. Always implement exponential backoff for 429 responses. ## Stripe Payment Integration Stripe provides both client-side (Stripe.js) and server-side APIs. For PCI compliance, never pass raw card numbers through your server—use Stripe Elements or the Payment Intents API. Webhooks are essential for handling asynchronous events like payment succeeded or subscription renewed. Configure your webhook endpoint to verify signatures using the Stripe-Signature header. ## ShipStation Integration The ShipStation API is REST-based. Authentication uses API key and API secret in the Authorization header. Endpoints cover orders, shipments, carriers, and warehouses. Poll for new orders or use webhooks if available for your plan. Batch operations are supported for bulk label creation. ## Twilio SMS Integration Twilio's REST API requires Account SID and Auth Token. The Messaging API endpoint is /2010-04-01/Accounts/{AccountSid}/Messages.json. For two-way messaging, configure a webhook URL to receive incoming messages. Consider using a queue for high-volume outbound SMS to avoid rate limits. # PentaCodes Technical Reference and Integration Documentation # Version 1.0 | Last Updated March 2025 # This document contains technical reference material for common integrations and deployment procedures. ## QuickBooks Online Integration The QuickBooks Online API uses OAuth 2.0 for authentication. You will need to register your application in the Intuit Developer Portal to obtain client credentials. The base URL for the API is https://quickbooks.api.intuit.com/v3/company/{realmId}. Common endpoints include /invoice, /customer, /payment, and /bill. Rate limits apply: 500 requests per minute for production apps. Always implement exponential backoff for 429 responses. ## Stripe Payment Integration Stripe provides both client-side (Stripe.js) and server-side APIs. For PCI compliance, never pass raw card numbers through your server—use Stripe Elements or the Payment Intents API. Webhooks are essential for handling asynchronous events like payment succeeded or subscription renewed. Configure your webhook endpoint to verify signatures using the Stripe-Signature header. ## ShipStation Integration The ShipStation API is REST-based. Authentication uses API key and API secret in the Authorization header. Endpoints cover orders, shipments, carriers, and warehouses. Poll for new orders or use webhooks if available for your plan. Batch operations are supported for bulk label creation. ## Twilio SMS Integration Twilio's REST API requires Account SID and Auth Token. The Messaging API endpoint is /2010-04-01/Accounts/{AccountSid}/Messages.json. For two-way messaging, configure a webhook URL to receive incoming messages. Consider using a queue for high-volume outbound SMS to avoid rate limits. # PentaCodes Technical Reference and Integration Documentation # Version 1.0 | Last Updated March 2025 # This document contains technical reference material for common integrations and deployment procedures. ## QuickBooks Online Integration The QuickBooks Online API uses OAuth 2.0 for authentication. You will need to register your application in the Intuit Developer Portal to obtain client credentials. The base URL for the API is https://quickbooks.api.intuit.com/v3/company/{realmId}. Common endpoints include /invoice, /customer, /payment, and /bill. Rate limits apply: 500 requests per minute for production apps. Always implement exponential backoff for 429 responses. ## Stripe Payment Integration Stripe provides both client-side (Stripe.js) and server-side APIs. For PCI compliance, never pass raw card numbers through your server—use Stripe Elements or the Payment Intents API. Webhooks are essential for handling asynchronous events like payment succeeded or subscription renewed. Configure your webhook endpoint to verify signatures using the Stripe-Signature header. ## ShipStation Integration The ShipStation API is REST-based. Authentication uses API key and API secret in the Authorization header. Endpoints cover orders, shipments, carriers, and warehouses. Poll for new orders or use webhooks if available for your plan. Batch operations are supported for bulk label creation. ## Twilio SMS Integration Twilio's REST API requires Account SID and Auth Token. The Messaging API endpoint is /2010-04-01/Accounts/{AccountSid}/Messages.json. For two-way messaging, configure a webhook URL to receive incoming messages. Consider using a queue for high-volume outbound SMS to avoid rate limits. # PentaCodes Technical Reference and Integration Documentation # Version 1.0 | Last Updated March 2025 # This document contains technical reference material for common integrations and deployment procedures. ## QuickBooks Online Integration The QuickBooks Online API uses OAuth 2.0 for authentication. You will need to register your application in the Intuit Developer Portal to obtain client credentials. The base URL for the API is https://quickbooks.api.intuit.com/v3/company/{realmId}. Common endpoints include /invoice, /customer, /payment, and /bill. Rate limits apply: 500 requests per minute for production apps. Always implement exponential backoff for 429 responses. ## Stripe Payment Integration Stripe provides both client-side (Stripe.js) and server-side APIs. For PCI compliance, never pass raw card numbers through your server—use Stripe Elements or the Payment Intents API. Webhooks are essential for handling asynchronous events like payment succeeded or subscription renewed. Configure your webhook endpoint to verify signatures using the Stripe-Signature header. ## ShipStation Integration The ShipStation API is REST-based. Authentication uses API key and API secret in the Authorization header. Endpoints cover orders, shipments, carriers, and warehouses. Poll for new orders or use webhooks if available for your plan. Batch operations are supported for bulk label creation. ## Twilio SMS Integration Twilio's REST API requires Account SID and Auth Token. The Messaging API endpoint is /2010-04-01/Accounts/{AccountSid}/Messages.json. For two-way messaging, configure a webhook URL to receive incoming messages. Consider using a queue for high-volume outbound SMS to avoid rate limits. # PentaCodes Technical Reference and Integration Documentation # Version 1.0 | Last Updated March 2025 # This document contains technical reference material for common integrations and deployment procedures. ## QuickBooks Online Integration The QuickBooks Online API uses OAuth 2.0 for authentication. You will need to register your application in the Intuit Developer Portal to obtain client credentials. The base URL for the API is https://quickbooks.api.intuit.com/v3/company/{realmId}. Common endpoints include /invoice, /customer, /payment, and /bill. Rate limits apply: 500 requests per minute for production apps. Always implement exponential backoff for 429 responses. ## Stripe Payment Integration Stripe provides both client-side (Stripe.js) and server-side APIs. For PCI compliance, never pass raw card numbers through your server—use Stripe Elements or the Payment Intents API. Webhooks are essential for handling asynchronous events like payment succeeded or subscription renewed. Configure your webhook endpoint to verify signatures using the Stripe-Signature header. ## ShipStation Integration The ShipStation API is REST-based. Authentication uses API key and API secret in the Authorization header. Endpoints cover orders, shipments, carriers, and warehouses. Poll for new orders or use webhooks if available for your plan. Batch operations are supported for bulk label creation. ## Twilio SMS Integration Twilio's REST API requires Account SID and Auth Token. The Messaging API endpoint is /2010-04-01/Accounts/{AccountSid}/Messages.json. For two-way messaging, configure a webhook URL to receive incoming messages. Consider using a queue for high-volume outbound SMS to avoid rate limits. # PentaCodes Technical Reference and Integration Documentation # Version 1.0 | Last Updated March 2025 # This document contains technical reference material for common integrations and deployment procedures. ## QuickBooks Online Integration The QuickBooks Online API uses OAuth 2.0 for authentication. You will need to register your application in the Intuit Developer Portal to obtain client credentials. The base URL for the API is https://quickbooks.api.intuit.com/v3/company/{realmId}. Common endpoints include /invoice, /customer, /payment, and /bill. Rate limits apply: 500 requests per minute for production apps. Always implement exponential backoff for 429 responses. ## Stripe Payment Integration Stripe provides both client-side (Stripe.js) and server-side APIs. For PCI compliance, never pass raw card numbers through your server—use Stripe Elements or the Payment Intents API. Webhooks are essential for handling asynchronous events like payment succeeded or subscription renewed. Configure your webhook endpoint to verify signatures using the Stripe-Signature header. ## ShipStation Integration The ShipStation API is REST-based. Authentication uses API key and API secret in the Authorization header. Endpoints cover orders, shipments, carriers, and warehouses. Poll for new orders or use webhooks if available for your plan. Batch operations are supported for bulk label creation. ## Twilio SMS Integration Twilio's REST API requires Account SID and Auth Token. The Messaging API endpoint is /2010-04-01/Accounts/{AccountSid}/Messages.json. For two-way messaging, configure a webhook URL to receive incoming messages. Consider using a queue for high-volume outbound SMS to avoid rate limits. # PentaCodes Technical Reference and Integration Documentation # Version 1.0 | Last Updated March 2025 # This document contains technical reference material for common integrations and deployment procedures. ## QuickBooks Online Integration The QuickBooks Online API uses OAuth 2.0 for authentication. You will need to register your application in the Intuit Developer Portal to obtain client credentials. The base URL for the API is https://quickbooks.api.intuit.com/v3/company/{realmId}. Common endpoints include /invoice, /customer, /payment, and /bill. Rate limits apply: 500 requests per minute for production apps. Always implement exponential backoff for 429 responses. ## Stripe Payment Integration Stripe provides both client-side (Stripe.js) and server-side APIs. For PCI compliance, never pass raw card numbers through your server—use Stripe Elements or the Payment Intents API. Webhooks are essential for handling asynchronous events like payment succeeded or subscription renewed. Configure your webhook endpoint to verify signatures using the Stripe-Signature header. ## ShipStation Integration The ShipStation API is REST-based. Authentication uses API key and API secret in the Authorization header. Endpoints cover orders, shipments, carriers, and warehouses. Poll for new orders or use webhooks if available for your plan. Batch operations are supported for bulk label creation. ## Twilio SMS Integration Twilio's REST API requires Account SID and Auth Token. The Messaging API endpoint is /2010-04-01/Accounts/{AccountSid}/Messages.json. For two-way messaging, configure a webhook URL to receive incoming messages. Consider using a queue for high-volume outbound SMS to avoid rate limits. # PentaCodes Technical Reference and Integration Documentation # Version 1.0 | Last Updated March 2025 # This document contains technical reference material for common integrations and deployment procedures. ## QuickBooks Online Integration The QuickBooks Online API uses OAuth 2.0 for authentication. You will need to register your application in the Intuit Developer Portal to obtain client credentials. The base URL for the API is https://quickbooks.api.intuit.com/v3/company/{realmId}. Common endpoints include /invoice, /customer, /payment, and /bill. Rate limits apply: 500 requests per minute for production apps. Always implement exponential backoff for 429 responses. ## Stripe Payment Integration Stripe provides both client-side (Stripe.js) and server-side APIs. For PCI compliance, never pass raw card numbers through your server—use Stripe Elements or the Payment Intents API. Webhooks are essential for handling asynchronous events like payment succeeded or subscription renewed. Configure your webhook endpoint to verify signatures using the Stripe-Signature header. ## ShipStation Integration The ShipStation API is REST-based. Authentication uses API key and API secret in the Authorization header. Endpoints cover orders, shipments, carriers, and warehouses. Poll for new orders or use webhooks if available for your plan. Batch operations are supported for bulk label creation. ## Twilio SMS Integration Twilio's REST API requires Account SID and Auth Token. The Messaging API endpoint is /2010-04-01/Accounts/{AccountSid}/Messages.json. For two-way messaging, configure a webhook URL to receive incoming messages. Consider using a queue for high-volume outbound SMS to avoid rate limits. # PentaCodes Technical Reference and Integration Documentation # Version 1.0 | Last Updated March 2025 # This document contains technical reference material for common integrations and deployment procedures. ## QuickBooks Online Integration The QuickBooks Online API uses OAuth 2.0 for authentication. You will need to register your application in the Intuit Developer Portal to obtain client credentials. The base URL for the API is https://quickbooks.api.intuit.com/v3/company/{realmId}. Common endpoints include /invoice, /customer, /payment, and /bill. Rate limits apply: 500 requests per minute for production apps. Always implement exponential backoff for 429 responses. ## Stripe Payment Integration Stripe provides both client-side (Stripe.js) and server-side APIs. For PCI compliance, never pass raw card numbers through your server—use Stripe Elements or the Payment Intents API. Webhooks are essential for handling asynchronous events like payment succeeded or subscription renewed. Configure your webhook endpoint to verify signatures using the Stripe-Signature header. ## ShipStation Integration The ShipStation API is REST-based. Authentication uses API key and API secret in the Authorization header. Endpoints cover orders, shipments, carriers, and warehouses. Poll for new orders or use webhooks if available for your plan. Batch operations are supported for bulk label creation. ## Twilio SMS Integration Twilio's REST API requires Account SID and Auth Token. The Messaging API endpoint is /2010-04-01/Accounts/{AccountSid}/Messages.json. For two-way messaging, configure a webhook URL to receive incoming messages. Consider using a queue for high-volume outbound SMS to avoid rate limits. # PentaCodes Technical Reference and Integration Documentation # Version 1.0 | Last Updated March 2025 # This document contains technical reference material for common integrations and deployment procedures. ## QuickBooks Online Integration The QuickBooks Online API uses OAuth 2.0 for authentication. You will need to register your application in the Intuit Developer Portal to obtain client credentials. The base URL for the API is https://quickbooks.api.intuit.com/v3/company/{realmId}. Common endpoints include /invoice, /customer, /payment, and /bill. Rate limits apply: 500 requests per minute for production apps. Always implement exponential backoff for 429 responses. ## Stripe Payment Integration Stripe provides both client-side (Stripe.js) and server-side APIs. For PCI compliance, never pass raw card numbers through your server—use Stripe Elements or the Payment Intents API. Webhooks are essential for handling asynchronous events like payment succeeded or subscription renewed. Configure your webhook endpoint to verify signatures using the Stripe-Signature header. ## ShipStation Integration The ShipStation API is REST-based. Authentication uses API key and API secret in the Authorization header. Endpoints cover orders, shipments, carriers, and warehouses. Poll for new orders or use webhooks if available for your plan. Batch operations are supported for bulk label creation. ## Twilio SMS Integration Twilio's REST API requires Account SID and Auth Token. The Messaging API endpoint is /2010-04-01/Accounts/{AccountSid}/Messages.json. For two-way messaging, configure a webhook URL to receive incoming messages. Consider using a queue for high-volume outbound SMS to avoid rate limits. # PentaCodes Technical Reference and Integration Documentation # Version 1.0 | Last Updated March 2025 # This document contains technical reference material for common integrations and deployment procedures. ## QuickBooks Online Integration The QuickBooks Online API uses OAuth 2.0 for authentication. You will need to register your application in the Intuit Developer Portal to obtain client credentials. The base URL for the API is https://quickbooks.api.intuit.com/v3/company/{realmId}. Common endpoints include /invoice, /customer, /payment, and /bill. Rate limits apply: 500 requests per minute for production apps. Always implement exponential backoff for 429 responses. ## Stripe Payment Integration Stripe provides both client-side (Stripe.js) and server-side APIs. For PCI compliance, never pass raw card numbers through your server—use Stripe Elements or the Payment Intents API. Webhooks are essential for handling asynchronous events like payment succeeded or subscription renewed. Configure your webhook endpoint to verify signatures using the Stripe-Signature header. ## ShipStation Integration The ShipStation API is REST-based. Authentication uses API key and API secret in the Authorization header. Endpoints cover orders, shipments, carriers, and warehouses. Poll for new orders or use webhooks if available for your plan. Batch operations are supported for bulk label creation. ## Twilio SMS Integration Twilio's REST API requires Account SID and Auth Token. The Messaging API endpoint is /2010-04-01/Accounts/{AccountSid}/Messages.json. For two-way messaging, configure a webhook URL to receive incoming messages. Consider using a queue for high-volume outbound SMS to avoid rate limits. # PentaCodes Technical Reference and Integration Documentation # Version 1.0 | Last Updated March 2025 # This document contains technical reference material for common integrations and deployment procedures. ## QuickBooks Online Integration The QuickBooks Online API uses OAuth 2.0 for authentication. You will need to register your application in the Intuit Developer Portal to obtain client credentials. The base URL for the API is https://quickbooks.api.intuit.com/v3/company/{realmId}. Common endpoints include /invoice, /customer, /payment, and /bill. Rate limits apply: 500 requests per minute for production apps. Always implement exponential backoff for 429 responses. ## Stripe Payment Integration Stripe provides both client-side (Stripe.js) and server-side APIs. For PCI compliance, never pass raw card numbers through your server—use Stripe Elements or the Payment Intents API. Webhooks are essential for handling asynchronous events like payment succeeded or subscription renewed. Configure your webhook endpoint to verify signatures using the Stripe-Signature header. ## ShipStation Integration The ShipStation API is REST-based. Authentication uses API key and API secret in the Authorization header. Endpoints cover orders, shipments, carriers, and warehouses. Poll for new orders or use webhooks if available for your plan. Batch operations are supported for bulk label creation. ## Twilio SMS Integration Twilio's REST API requires Account SID and Auth Token. The Messaging API endpoint is /2010-04-01/Accounts/{AccountSid}/Messages.json. For two-way messaging, configure a webhook URL to receive incoming messages. Consider using a queue for high-volume outbound SMS to avoid rate limits. # PentaCodes Technical Reference and Integration Documentation # Version 1.0 | Last Updated March 2025 # This document contains technical reference material for common integrations and deployment procedures. ## QuickBooks Online Integration The QuickBooks Online API uses OAuth 2.0 for authentication. You will need to register your application in the Intuit Developer Portal to obtain client credentials. The base URL for the API is https://quickbooks.api.intuit.com/v3/company/{realmId}. Common endpoints include /invoice, /customer, /payment, and /bill. Rate limits apply: 500 requests per minute for production apps. Always implement exponential backoff for 429 responses. ## Stripe Payment Integration Stripe provides both client-side (Stripe.js) and server-side APIs. For PCI compliance, never pass raw card numbers through your server—use Stripe Elements or the Payment Intents API. Webhooks are essential for handling asynchronous events like payment succeeded or subscription renewed. Configure your webhook endpoint to verify signatures using the Stripe-Signature header. ## ShipStation Integration The ShipStation API is REST-based. Authentication uses API key and API secret in the Authorization header. Endpoints cover orders, shipments, carriers, and warehouses. Poll for new orders or use webhooks if available for your plan. Batch operations are supported for bulk label creation. ## Twilio SMS Integration Twilio's REST API requires Account SID and Auth Token. The Messaging API endpoint is /2010-04-01/Accounts/{AccountSid}/Messages.json. For two-way messaging, configure a webhook URL to receive incoming messages. Consider using a queue for high-volume outbound SMS to avoid rate limits. # PentaCodes Technical Reference and Integration Documentation # Version 1.0 | Last Updated March 2025 # This document contains technical reference material for common integrations and deployment procedures. ## QuickBooks Online Integration The QuickBooks Online API uses OAuth 2.0 for authentication. You will need to register your application in the Intuit Developer Portal to obtain client credentials. The base URL for the API is https://quickbooks.api.intuit.com/v3/company/{realmId}. Common endpoints include /invoice, /customer, /payment, and /bill. Rate limits apply: 500 requests per minute for production apps. Always implement exponential backoff for 429 responses. ## Stripe Payment Integration Stripe provides both client-side (Stripe.js) and server-side APIs. For PCI compliance, never pass raw card numbers through your server—use Stripe Elements or the Payment Intents API. Webhooks are essential for handling asynchronous events like payment succeeded or subscription renewed. Configure your webhook endpoint to verify signatures using the Stripe-Signature header. ## ShipStation Integration The ShipStation API is REST-based. Authentication uses API key and API secret in the Authorization header. Endpoints cover orders, shipments, carriers, and warehouses. Poll for new orders or use webhooks if available for your plan. Batch operations are supported for bulk label creation. ## Twilio SMS Integration Twilio's REST API requires Account SID and Auth Token. The Messaging API endpoint is /2010-04-01/Accounts/{AccountSid}/Messages.json. For two-way messaging, configure a webhook URL to receive incoming messages. Consider using a queue for high-volume outbound SMS to avoid rate limits. # PentaCodes Technical Reference and Integration Documentation # Version 1.0 | Last Updated March 2025 # This document contains technical reference material for common integrations and deployment procedures. ## QuickBooks Online Integration The QuickBooks Online API uses OAuth 2.0 for authentication. You will need to register your application in the Intuit Developer Portal to obtain client credentials. The base URL for the API is https://quickbooks.api.intuit.com/v3/company/{realmId}. Common endpoints include /invoice, /customer, /payment, and /bill. Rate limits apply: 500 requests per minute for production apps. Always implement exponential backoff for 429 responses. ## Stripe Payment Integration Stripe provides both client-side (Stripe.js) and server-side APIs. For PCI compliance, never pass raw card numbers through your server—use Stripe Elements or the Payment Intents API. Webhooks are essential for handling asynchronous events like payment succeeded or subscription renewed. Configure your webhook endpoint to verify signatures using the Stripe-Signature header. ## ShipStation Integration The ShipStation API is REST-based. Authentication uses API key and API secret in the Authorization header. Endpoints cover orders, shipments, carriers, and warehouses. Poll for new orders or use webhooks if available for your plan. Batch operations are supported for bulk label creation. ## Twilio SMS Integration Twilio's REST API requires Account SID and Auth Token. The Messaging API endpoint is /2010-04-01/Accounts/{AccountSid}/Messages.json. For two-way messaging, configure a webhook URL to receive incoming messages. Consider using a queue for high-volume outbound SMS to avoid rate limits. # PentaCodes Technical Reference and Integration Documentation # Version 1.0 | Last Updated March 2025 # This document contains technical reference material for common integrations and deployment procedures. ## QuickBooks Online Integration The QuickBooks Online API uses OAuth 2.0 for authentication. You will need to register your application in the Intuit Developer Portal to obtain client credentials. The base URL for the API is https://quickbooks.api.intuit.com/v3/company/{realmId}. Common endpoints include /invoice, /customer, /payment, and /bill. Rate limits apply: 500 requests per minute for production apps. Always implement exponential backoff for 429 responses. ## Stripe Payment Integration Stripe provides both client-side (Stripe.js) and server-side APIs. For PCI compliance, never pass raw card numbers through your server—use Stripe Elements or the Payment Intents API. Webhooks are essential for handling asynchronous events like payment succeeded or subscription renewed. Configure your webhook endpoint to verify signatures using the Stripe-Signature header. ## ShipStation Integration The ShipStation API is REST-based. Authentication uses API key and API secret in the Authorization header. Endpoints cover orders, shipments, carriers, and warehouses. Poll for new orders or use webhooks if available for your plan. Batch operations are supported for bulk label creation. ## Twilio SMS Integration Twilio's REST API requires Account SID and Auth Token. The Messaging API endpoint is /2010-04-01/Accounts/{AccountSid}/Messages.json. For two-way messaging, configure a webhook URL to receive incoming messages. Consider using a queue for high-volume outbound SMS to avoid rate limits. # PentaCodes Technical Reference and Integration Documentation # Version 1.0 | Last Updated March 2025 # This document contains technical reference material for common integrations and deployment procedures. ## QuickBooks Online Integration The QuickBooks Online API uses OAuth 2.0 for authentication. You will need to register your application in the Intuit Developer Portal to obtain client credentials. The base URL for the API is https://quickbooks.api.intuit.com/v3/company/{realmId}. Common endpoints include /invoice, /customer, /payment, and /bill. Rate limits apply: 500 requests per minute for production apps. Always implement exponential backoff for 429 responses. ## Stripe Payment Integration Stripe provides both client-side (Stripe.js) and server-side APIs. For PCI compliance, never pass raw card numbers through your server—use Stripe Elements or the Payment Intents API. Webhooks are essential for handling asynchronous events like payment succeeded or subscription renewed. Configure your webhook endpoint to verify signatures using the Stripe-Signature header. ## ShipStation Integration The ShipStation API is REST-based. Authentication uses API key and API secret in the Authorization header. Endpoints cover orders, shipments, carriers, and warehouses. Poll for new orders or use webhooks if available for your plan. Batch operations are supported for bulk label creation. ## Twilio SMS Integration Twilio's REST API requires Account SID and Auth Token. The Messaging API endpoint is /2010-04-01/Accounts/{AccountSid}/Messages.json. For two-way messaging, configure a webhook URL to receive incoming messages. Consider using a queue for high-volume outbound SMS to avoid rate limits. # PentaCodes Technical Reference and Integration Documentation # Version 1.0 | Last Updated March 2025 # This document contains technical reference material for common integrations and deployment procedures. ## QuickBooks Online Integration The QuickBooks Online API uses OAuth 2.0 for authentication. You will need to register your application in the Intuit Developer Portal to obtain client credentials. The base URL for the API is https://quickbooks.api.intuit.com/v3/company/{realmId}. Common endpoints include /invoice, /customer, /payment, and /bill. Rate limits apply: 500 requests per minute for production apps. Always implement exponential backoff for 429 responses. ## Stripe Payment Integration Stripe provides both client-side (Stripe.js) and server-side APIs. For PCI compliance, never pass raw card numbers through your server—use Stripe Elements or the Payment Intents API. Webhooks are essential for handling asynchronous events like payment succeeded or subscription renewed. Configure your webhook endpoint to verify signatures using the Stripe-Signature header. ## ShipStation Integration The ShipStation API is REST-based. Authentication uses API key and API secret in the Authorization header. Endpoints cover orders, shipments, carriers, and warehouses. Poll for new orders or use webhooks if available for your plan. Batch operations are supported for bulk label creation. ## Twilio SMS Integration Twilio's REST API requires Account SID and Auth Token. The Messaging API endpoint is /2010-04-01/Accounts/{AccountSid}/Messages.json. For two-way messaging, configure a webhook URL to receive incoming messages. Consider using a queue for high-volume outbound SMS to avoid rate limits. # PentaCodes Technical Reference and Integration Documentation # Version 1.0 | Last Updated March 2025 # This document contains technical reference material for common integrations and deployment procedures. ## QuickBooks Online Integration The QuickBooks Online API uses OAuth 2.0 for authentication. You will need to register your application in the Intuit Developer Portal to obtain client credentials. The base URL for the API is https://quickbooks.api.intuit.com/v3/company/{realmId}. Common endpoints include /invoice, /customer, /payment, and /bill. Rate limits apply: 500 requests per minute for production apps. Always implement exponential backoff for 429 responses. ## Stripe Payment Integration Stripe provides both client-side (Stripe.js) and server-side APIs. For PCI compliance, never pass raw card numbers through your server—use Stripe Elements or the Payment Intents API. Webhooks are essential for handling asynchronous events like payment succeeded or subscription renewed. Configure your webhook endpoint to verify signatures using the Stripe-Signature header. ## ShipStation Integration The ShipStation API is REST-based. Authentication uses API key and API secret in the Authorization header. Endpoints cover orders, shipments, carriers, and warehouses. Poll for new orders or use webhooks if available for your plan. Batch operations are supported for bulk label creation. ## Twilio SMS Integration Twilio's REST API requires Account SID and Auth Token. The Messaging API endpoint is /2010-04-01/Accounts/{AccountSid}/Messages.json. For two-way messaging, configure a webhook URL to receive incoming messages. Consider using a queue for high-volume outbound SMS to avoid rate limits. # PentaCodes Technical Reference and Integration Documentation # Version 1.0 | Last Updated March 2025 # This document contains technical reference material for common integrations and deployment procedures. ## QuickBooks Online Integration The QuickBooks Online API uses OAuth 2.0 for authentication. You will need to register your application in the Intuit Developer Portal to obtain client credentials. The base URL for the API is https://quickbooks.api.intuit.com/v3/company/{realmId}. Common endpoints include /invoice, /customer, /payment, and /bill. Rate limits apply: 500 requests per minute for production apps. Always implement exponential backoff for 429 responses. ## Stripe Payment Integration Stripe provides both client-side (Stripe.js) and server-side APIs. For PCI compliance, never pass raw card numbers through your server—use Stripe Elements or the Payment Intents API. Webhooks are essential for handling asynchronous events like payment succeeded or subscription renewed. Configure your webhook endpoint to verify signatures using the Stripe-Signature header. ## ShipStation Integration The ShipStation API is REST-based. Authentication uses API key and API secret in the Authorization header. Endpoints cover orders, shipments, carriers, and warehouses. Poll for new orders or use webhooks if available for your plan. Batch operations are supported for bulk label creation. ## Twilio SMS Integration Twilio's REST API requires Account SID and Auth Token. The Messaging API endpoint is /2010-04-01/Accounts/{AccountSid}/Messages.json. For two-way messaging, configure a webhook URL to receive incoming messages. Consider using a queue for high-volume outbound SMS to avoid rate limits. # PentaCodes Technical Reference and Integration Documentation # Version 1.0 | Last Updated March 2025 # This document contains technical reference material for common integrations and deployment procedures. ## QuickBooks Online Integration The QuickBooks Online API uses OAuth 2.0 for authentication. You will need to register your application in the Intuit Developer Portal to obtain client credentials. The base URL for the API is https://quickbooks.api.intuit.com/v3/company/{realmId}. Common endpoints include /invoice, /customer, /payment, and /bill. Rate limits apply: 500 requests per minute for production apps. Always implement exponential backoff for 429 responses. ## Stripe Payment Integration Stripe provides both client-side (Stripe.js) and server-side APIs. For PCI compliance, never pass raw card numbers through your server—use Stripe Elements or the Payment Intents API. Webhooks are essential for handling asynchronous events like payment succeeded or subscription renewed. Configure your webhook endpoint to verify signatures using the Stripe-Signature header. ## ShipStation Integration The ShipStation API is REST-based. Authentication uses API key and API secret in the Authorization header. Endpoints cover orders, shipments, carriers, and warehouses. Poll for new orders or use webhooks if available for your plan. Batch operations are supported for bulk label creation. ## Twilio SMS Integration Twilio's REST API requires Account SID and Auth Token. The Messaging API endpoint is /2010-04-01/Accounts/{AccountSid}/Messages.json. For two-way messaging, configure a webhook URL to receive incoming messages. Consider using a queue for high-volume outbound SMS to avoid rate limits. # PentaCodes Technical Reference and Integration Documentation # Version 1.0 | Last Updated March 2025 # This document contains technical reference material for common integrations and deployment procedures. ## QuickBooks Online Integration The QuickBooks Online API uses OAuth 2.0 for authentication. You will need to register your application in the Intuit Developer Portal to obtain client credentials. The base URL for the API is https://quickbooks.api.intuit.com/v3/company/{realmId}. Common endpoints include /invoice, /customer, /payment, and /bill. Rate limits apply: 500 requests per minute for production apps. Always implement exponential backoff for 429 responses. ## Stripe Payment Integration Stripe provides both client-side (Stripe.js) and server-side APIs. For PCI compliance, never pass raw card numbers through your server—use Stripe Elements or the Payment Intents API. Webhooks are essential for handling asynchronous events like payment succeeded or subscription renewed. Configure your webhook endpoint to verify signatures using the Stripe-Signature header. ## ShipStation Integration The ShipStation API is REST-based. Authentication uses API key and API secret in the Authorization header. Endpoints cover orders, shipments, carriers, and warehouses. Poll for new orders or use webhooks if available for your plan. Batch operations are supported for bulk label creation. ## Twilio SMS Integration Twilio's REST API requires Account SID and Auth Token. The Messaging API endpoint is /2010-04-01/Accounts/{AccountSid}/Messages.json. For two-way messaging, configure a webhook URL to receive incoming messages. Consider using a queue for high-volume outbound SMS to avoid rate limits. # PentaCodes Technical Reference and Integration Documentation # Version 1.0 | Last Updated March 2025 # This document contains technical reference material for common integrations and deployment procedures. ## QuickBooks Online Integration The QuickBooks Online API uses OAuth 2.0 for authentication. You will need to register your application in the Intuit Developer Portal to obtain client credentials. The base URL for the API is https://quickbooks.api.intuit.com/v3/company/{realmId}. Common endpoints include /invoice, /customer, /payment, and /bill. Rate limits apply: 500 requests per minute for production apps. Always implement exponential backoff for 429 responses. ## Stripe Payment Integration Stripe provides both client-side (Stripe.js) and server-side APIs. For PCI compliance, never pass raw card numbers through your server—use Stripe Elements or the Payment Intents API. Webhooks are essential for handling asynchronous events like payment succeeded or subscription renewed. Configure your webhook endpoint to verify signatures using the Stripe-Signature header. ## ShipStation Integration The ShipStation API is REST-based. Authentication uses API key and API secret in the Authorization header. Endpoints cover orders, shipments, carriers, and warehouses. Poll for new orders or use webhooks if available for your plan. Batch operations are supported for bulk label creation. ## Twilio SMS Integration Twilio's REST API requires Account SID and Auth Token. The Messaging API endpoint is /2010-04-01/Accounts/{AccountSid}/Messages.json. For two-way messaging, configure a webhook URL to receive incoming messages. Consider using a queue for high-volume outbound SMS to avoid rate limits. # PentaCodes Technical Reference and Integration Documentation # Version 1.0 | Last Updated March 2025 # This document contains technical reference material for common integrations and deployment procedures. ## QuickBooks Online Integration The QuickBooks Online API uses OAuth 2.0 for authentication. You will need to register your application in the Intuit Developer Portal to obtain client credentials. The base URL for the API is https://quickbooks.api.intuit.com/v3/company/{realmId}. Common endpoints include /invoice, /customer, /payment, and /bill. Rate limits apply: 500 requests per minute for production apps. Always implement exponential backoff for 429 responses. ## Stripe Payment Integration Stripe provides both client-side (Stripe.js) and server-side APIs. For PCI compliance, never pass raw card numbers through your server—use Stripe Elements or the Payment Intents API. Webhooks are essential for handling asynchronous events like payment succeeded or subscription renewed. Configure your webhook endpoint to verify signatures using the Stripe-Signature header. ## ShipStation Integration The ShipStation API is REST-based. Authentication uses API key and API secret in the Authorization header. Endpoints cover orders, shipments, carriers, and warehouses. Poll for new orders or use webhooks if available for your plan. Batch operations are supported for bulk label creation. ## Twilio SMS Integration Twilio's REST API requires Account SID and Auth Token. The Messaging API endpoint is /2010-04-01/Accounts/{AccountSid}/Messages.json. For two-way messaging, configure a webhook URL to receive incoming messages. Consider using a queue for high-volume outbound SMS to avoid rate limits. # PentaCodes Technical Reference and Integration Documentation # Version 1.0 | Last Updated March 2025 # This document contains technical reference material for common integrations and deployment procedures. ## QuickBooks Online Integration The QuickBooks Online API uses OAuth 2.0 for authentication. You will need to register your application in the Intuit Developer Portal to obtain client credentials. The base URL for the API is https://quickbooks.api.intuit.com/v3/company/{realmId}. Common endpoints include /invoice, /customer, /payment, and /bill. Rate limits apply: 500 requests per minute for production apps. Always implement exponential backoff for 429 responses. ## Stripe Payment Integration Stripe provides both client-side (Stripe.js) and server-side APIs. For PCI compliance, never pass raw card numbers through your server—use Stripe Elements or the Payment Intents API. Webhooks are essential for handling asynchronous events like payment succeeded or subscription renewed. Configure your webhook endpoint to verify signatures using the Stripe-Signature header. ## ShipStation Integration The ShipStation API is REST-based. Authentication uses API key and API secret in the Authorization header. Endpoints cover orders, shipments, carriers, and warehouses. Poll for new orders or use webhooks if available for your plan. Batch operations are supported for bulk label creation. ## Twilio SMS Integration Twilio's REST API requires Account SID and Auth Token. The Messaging API endpoint is /2010-04-01/Accounts/{AccountSid}/Messages.json. For two-way messaging, configure a webhook URL to receive incoming messages. Consider using a queue for high-volume outbound SMS to avoid rate limits. # PentaCodes Technical Reference and Integration Documentation # Version 1.0 | Last Updated March 2025 # This document contains technical reference material for common integrations and deployment procedures. ## QuickBooks Online Integration The QuickBooks Online API uses OAuth 2.0 for authentication. You will need to register your application in the Intuit Developer Portal to obtain client credentials. The base URL for the API is https://quickbooks.api.intuit.com/v3/company/{realmId}. Common endpoints include /invoice, /customer, /payment, and /bill. Rate limits apply: 500 requests per minute for production apps. Always implement exponential backoff for 429 responses. ## Stripe Payment Integration Stripe provides both client-side (Stripe.js) and server-side APIs. For PCI compliance, never pass raw card numbers through your server—use Stripe Elements or the Payment Intents API. Webhooks are essential for handling asynchronous events like payment succeeded or subscription renewed. Configure your webhook endpoint to verify signatures using the Stripe-Signature header. ## ShipStation Integration The ShipStation API is REST-based. Authentication uses API key and API secret in the Authorization header. Endpoints cover orders, shipments, carriers, and warehouses. Poll for new orders or use webhooks if available for your plan. Batch operations are supported for bulk label creation. ## Twilio SMS Integration Twilio's REST API requires Account SID and Auth Token. The Messaging API endpoint is /2010-04-01/Accounts/{AccountSid}/Messages.json. For two-way messaging, configure a webhook URL to receive incoming messages. Consider using a queue for high-volume outbound SMS to avoid rate limits. # PentaCodes Technical Reference and Integration Documentation # Version 1.0 | Last Updated March 2025 # This document contains technical reference material for common integrations and deployment procedures. ## QuickBooks Online Integration The QuickBooks Online API uses OAuth 2.0 for authentication. You will need to register your application in the Intuit Developer Portal to obtain client credentials. The base URL for the API is https://quickbooks.api.intuit.com/v3/company/{realmId}. Common endpoints include /invoice, /customer, /payment, and /bill. Rate limits apply: 500 requests per minute for production apps. Always implement exponential backoff for 429 responses. ## Stripe Payment Integration Stripe provides both client-side (Stripe.js) and server-side APIs. For PCI compliance, never pass raw card numbers through your server—use Stripe Elements or the Payment Intents API. Webhooks are essential for handling asynchronous events like payment succeeded or subscription renewed. Configure your webhook endpoint to verify signatures using the Stripe-Signature header. ## ShipStation Integration The ShipStation API is REST-based. Authentication uses API key and API secret in the Authorization header. Endpoints cover orders, shipments, carriers, and warehouses. Poll for new orders or use webhooks if available for your plan. Batch operations are supported for bulk label creation. ## Twilio SMS Integration Twilio's REST API requires Account SID and Auth Token. The Messaging API endpoint is /2010-04-01/Accounts/{AccountSid}/Messages.json. For two-way messaging, configure a webhook URL to receive incoming messages. Consider using a queue for high-volume outbound SMS to avoid rate limits. # PentaCodes Technical Reference and Integration Documentation # Version 1.0 | Last Updated March 2025 # This document contains technical reference material for common integrations and deployment procedures. ## QuickBooks Online Integration The QuickBooks Online API uses OAuth 2.0 for authentication. You will need to register your application in the Intuit Developer Portal to obtain client credentials. The base URL for the API is https://quickbooks.api.intuit.com/v3/company/{realmId}. Common endpoints include /invoice, /customer, /payment, and /bill. Rate limits apply: 500 requests per minute for production apps. Always implement exponential backoff for 429 responses. ## Stripe Payment Integration Stripe provides both client-side (Stripe.js) and server-side APIs. For PCI compliance, never pass raw card numbers through your server—use Stripe Elements or the Payment Intents API. Webhooks are essential for handling asynchronous events like payment succeeded or subscription renewed. Configure your webhook endpoint to verify signatures using the Stripe-Signature header. ## ShipStation Integration The ShipStation API is REST-based. Authentication uses API key and API secret in the Authorization header. Endpoints cover orders, shipments, carriers, and warehouses. Poll for new orders or use webhooks if available for your plan. Batch operations are supported for bulk label creation. ## Twilio SMS Integration Twilio's REST API requires Account SID and Auth Token. The Messaging API endpoint is /2010-04-01/Accounts/{AccountSid}/Messages.json. For two-way messaging, configure a webhook URL to receive incoming messages. Consider using a queue for high-volume outbound SMS to avoid rate limits. # PentaCodes Technical Reference and Integration Documentation # Version 1.0 | Last Updated March 2025 # This document contains technical reference material for common integrations and deployment procedures. ## QuickBooks Online Integration The QuickBooks Online API uses OAuth 2.0 for authentication. You will need to register your application in the Intuit Developer Portal to obtain client credentials. The base URL for the API is https://quickbooks.api.intuit.com/v3/company/{realmId}. Common endpoints include /invoice, /customer, /payment, and /bill. Rate limits apply: 500 requests per minute for production apps. Always implement exponential backoff for 429 responses. ## Stripe Payment Integration Stripe provides both client-side (Stripe.js) and server-side APIs. For PCI compliance, never pass raw card numbers through your server—use Stripe Elements or the Payment Intents API. Webhooks are essential for handling asynchronous events like payment succeeded or subscription renewed. Configure your webhook endpoint to verify signatures using the Stripe-Signature header. ## ShipStation Integration The ShipStation API is REST-based. Authentication uses API key and API secret in the Authorization header. Endpoints cover orders, shipments, carriers, and warehouses. Poll for new orders or use webhooks if available for your plan. Batch operations are supported for bulk label creation. ## Twilio SMS Integration Twilio's REST API requires Account SID and Auth Token. The Messaging API endpoint is /2010-04-01/Accounts/{AccountSid}/Messages.json. For two-way messaging, configure a webhook URL to receive incoming messages. Consider using a queue for high-volume outbound SMS to avoid rate limits. # PentaCodes Technical Reference and Integration Documentation # Version 1.0 | Last Updated March 2025 # This document contains technical reference material for common integrations and deployment procedures. ## QuickBooks Online Integration The QuickBooks Online API uses OAuth 2.0 for authentication. You will need to register your application in the Intuit Developer Portal to obtain client credentials. The base URL for the API is https://quickbooks.api.intuit.com/v3/company/{realmId}. Common endpoints include /invoice, /customer, /payment, and /bill. Rate limits apply: 500 requests per minute for production apps. Always implement exponential backoff for 429 responses. ## Stripe Payment Integration Stripe provides both client-side (Stripe.js) and server-side APIs. For PCI compliance, never pass raw card numbers through your server—use Stripe Elements or the Payment Intents API. Webhooks are essential for handling asynchronous events like payment succeeded or subscription renewed. Configure your webhook endpoint to verify signatures using the Stripe-Signature header. ## ShipStation Integration The ShipStation API is REST-based. Authentication uses API key and API secret in the Authorization header. Endpoints cover orders, shipments, carriers, and warehouses. Poll for new orders or use webhooks if available for your plan. Batch operations are supported for bulk label creation. ## Twilio SMS Integration Twilio's REST API requires Account SID and Auth Token. The Messaging API endpoint is /2010-04-01/Accounts/{AccountSid}/Messages.json. For two-way messaging, configure a webhook URL to receive incoming messages. Consider using a queue for high-volume outbound SMS to avoid rate limits. # PentaCodes Technical Reference and Integration Documentation # Version 1.0 | Last Updated March 2025 # This document contains technical reference material for common integrations and deployment procedures. ## QuickBooks Online Integration The QuickBooks Online API uses OAuth 2.0 for authentication. You will need to register your application in the Intuit Developer Portal to obtain client credentials. The base URL for the API is https://quickbooks.api.intuit.com/v3/company/{realmId}. Common endpoints include /invoice, /customer, /payment, and /bill. Rate limits apply: 500 requests per minute for production apps. Always implement exponential backoff for 429 responses. ## Stripe Payment Integration Stripe provides both client-side (Stripe.js) and server-side APIs. For PCI compliance, never pass raw card numbers through your server—use Stripe Elements or the Payment Intents API. Webhooks are essential for handling asynchronous events like payment succeeded or subscription renewed. Configure your webhook endpoint to verify signatures using the Stripe-Signature header. ## ShipStation Integration The ShipStation API is REST-based. Authentication uses API key and API secret in the Authorization header. Endpoints cover orders, shipments, carriers, and warehouses. Poll for new orders or use webhooks if available for your plan. Batch operations are supported for bulk label creation. ## Twilio SMS Integration Twilio's REST API requires Account SID and Auth Token. The Messaging API endpoint is /2010-04-01/Accounts/{AccountSid}/Messages.json. For two-way messaging, configure a webhook URL to receive incoming messages. Consider using a queue for high-volume outbound SMS to avoid rate limits. # PentaCodes Technical Reference and Integration Documentation # Version 1.0 | Last Updated March 2025 # This document contains technical reference material for common integrations and deployment procedures. ## QuickBooks Online Integration The QuickBooks Online API uses OAuth 2.0 for authentication. You will need to register your application in the Intuit Developer Portal to obtain client credentials. The base URL for the API is https://quickbooks.api.intuit.com/v3/company/{realmId}. Common endpoints include /invoice, /customer, /payment, and /bill. Rate limits apply: 500 requests per minute for production apps. Always implement exponential backoff for 429 responses. ## Stripe Payment Integration Stripe provides both client-side (Stripe.js) and server-side APIs. For PCI compliance, never pass raw card numbers through your server—use Stripe Elements or the Payment Intents API. Webhooks are essential for handling asynchronous events like payment succeeded or subscription renewed. Configure your webhook endpoint to verify signatures using the Stripe-Signature header. ## ShipStation Integration The ShipStation API is REST-based. Authentication uses API key and API secret in the Authorization header. Endpoints cover orders, shipments, carriers, and warehouses. Poll for new orders or use webhooks if available for your plan. Batch operations are supported for bulk label creation. ## Twilio SMS Integration Twilio's REST API requires Account SID and Auth Token. The Messaging API endpoint is /2010-04-01/Accounts/{AccountSid}/Messages.json. For two-way messaging, configure a webhook URL to receive incoming messages. Consider using a queue for high-volume outbound SMS to avoid rate limits. # PentaCodes Technical Reference and Integration Documentation # Version 1.0 | Last Updated March 2025 # This document contains technical reference material for common integrations and deployment procedures. ## QuickBooks Online Integration The QuickBooks Online API uses OAuth 2.0 for authentication. You will need to register your application in the Intuit Developer Portal to obtain client credentials. The base URL for the API is https://quickbooks.api.intuit.com/v3/company/{realmId}. Common endpoints include /invoice, /customer, /payment, and /bill. Rate limits apply: 500 requests per minute for production apps. Always implement exponential backoff for 429 responses. ## Stripe Payment Integration Stripe provides both client-side (Stripe.js) and server-side APIs. For PCI compliance, never pass raw card numbers through your server—use Stripe Elements or the Payment Intents API. Webhooks are essential for handling asynchronous events like payment succeeded or subscription renewed. Configure your webhook endpoint to verify signatures using the Stripe-Signature header. ## ShipStation Integration The ShipStation API is REST-based. Authentication uses API key and API secret in the Authorization header. Endpoints cover orders, shipments, carriers, and warehouses. Poll for new orders or use webhooks if available for your plan. Batch operations are supported for bulk label creation. ## Twilio SMS Integration Twilio's REST API requires Account SID and Auth Token. The Messaging API endpoint is /2010-04-01/Accounts/{AccountSid}/Messages.json. For two-way messaging, configure a webhook URL to receive incoming messages. Consider using a queue for high-volume outbound SMS to avoid rate limits. # PentaCodes Technical Reference and Integration Documentation # Version 1.0 | Last Updated March 2025 # This document contains technical reference material for common integrations and deployment procedures. ## QuickBooks Online Integration The QuickBooks Online API uses OAuth 2.0 for authentication. You will need to register your application in the Intuit Developer Portal to obtain client credentials. The base URL for the API is https://quickbooks.api.intuit.com/v3/company/{realmId}. Common endpoints include /invoice, /customer, /payment, and /bill. Rate limits apply: 500 requests per minute for production apps. Always implement exponential backoff for 429 responses. ## Stripe Payment Integration Stripe provides both client-side (Stripe.js) and server-side APIs. For PCI compliance, never pass raw card numbers through your server—use Stripe Elements or the Payment Intents API. Webhooks are essential for handling asynchronous events like payment succeeded or subscription renewed. Configure your webhook endpoint to verify signatures using the Stripe-Signature header. ## ShipStation Integration The ShipStation API is REST-based. Authentication uses API key and API secret in the Authorization header. Endpoints cover orders, shipments, carriers, and warehouses. Poll for new orders or use webhooks if available for your plan. Batch operations are supported for bulk label creation. ## Twilio SMS Integration Twilio's REST API requires Account SID and Auth Token. The Messaging API endpoint is /2010-04-01/Accounts/{AccountSid}/Messages.json. For two-way messaging, configure a webhook URL to receive incoming messages. Consider using a queue for high-volume outbound SMS to avoid rate limits. # PentaCodes Technical Reference and Integration Documentation # Version 1.0 | Last Updated March 2025 # This document contains technical reference material for common integrations and deployment procedures. ## QuickBooks Online Integration The QuickBooks Online API uses OAuth 2.0 for authentication. You will need to register your application in the Intuit Developer Portal to obtain client credentials. The base URL for the API is https://quickbooks.api.intuit.com/v3/company/{realmId}. Common endpoints include /invoice, /customer, /payment, and /bill. Rate limits apply: 500 requests per minute for production apps. Always implement exponential backoff for 429 responses. ## Stripe Payment Integration Stripe provides both client-side (Stripe.js) and server-side APIs. For PCI compliance, never pass raw card numbers through your server—use Stripe Elements or the Payment Intents API. Webhooks are essential for handling asynchronous events like payment succeeded or subscription renewed. Configure your webhook endpoint to verify signatures using the Stripe-Signature header. ## ShipStation Integration The ShipStation API is REST-based. Authentication uses API key and API secret in the Authorization header. Endpoints cover orders, shipments, carriers, and warehouses. Poll for new orders or use webhooks if available for your plan. Batch operations are supported for bulk label creation. ## Twilio SMS Integration Twilio's REST API requires Account SID and Auth Token. The Messaging API endpoint is /2010-04-01/Accounts/{AccountSid}/Messages.json. For two-way messaging, configure a webhook URL to receive incoming messages. Consider using a queue for high-volume outbound SMS to avoid rate limits. # PentaCodes Technical Reference and Integration Documentation # Version 1.0 | Last Updated March 2025 # This document contains technical reference material for common integrations and deployment procedures. ## QuickBooks Online Integration The QuickBooks Online API uses OAuth 2.0 for authentication. You will need to register your application in the Intuit Developer Portal to obtain client credentials. The base URL for the API is https://quickbooks.api.intuit.com/v3/company/{realmId}. Common endpoints include /invoice, /customer, /payment, and /bill. Rate limits apply: 500 requests per minute for production apps. Always implement exponential backoff for 429 responses. ## Stripe Payment Integration Stripe provides both client-side (Stripe.js) and server-side APIs. For PCI compliance, never pass raw card numbers through your server—use Stripe Elements or the Payment Intents API. Webhooks are essential for handling asynchronous events like payment succeeded or subscription renewed. Configure your webhook endpoint to verify signatures using the Stripe-Signature header. ## ShipStation Integration The ShipStation API is REST-based. Authentication uses API key and API secret in the Authorization header. Endpoints cover orders, shipments, carriers, and warehouses. Poll for new orders or use webhooks if available for your plan. Batch operations are supported for bulk label creation. ## Twilio SMS Integration Twilio's REST API requires Account SID and Auth Token. The Messaging API endpoint is /2010-04-01/Accounts/{AccountSid}/Messages.json. For two-way messaging, configure a webhook URL to receive incoming messages. Consider using a queue for high-volume outbound SMS to avoid rate limits. # PentaCodes Technical Reference and Integration Documentation # Version 1.0 | Last Updated March 2025 # This document contains technical reference material for common integrations and deployment procedures. ## QuickBooks Online Integration The QuickBooks Online API uses OAuth 2.0 for authentication. You will need to register your application in the Intuit Developer Portal to obtain client credentials. The base URL for the API is https://quickbooks.api.intuit.com/v3/company/{realmId}. Common endpoints include /invoice, /customer, /payment, and /bill. Rate limits apply: 500 requests per minute for production apps. Always implement exponential backoff for 429 responses. ## Stripe Payment Integration Stripe provides both client-side (Stripe.js) and server-side APIs. For PCI compliance, never pass raw card numbers through your server—use Stripe Elements or the Payment Intents API. Webhooks are essential for handling asynchronous events like payment succeeded or subscription renewed. Configure your webhook endpoint to verify signatures using the Stripe-Signature header. ## ShipStation Integration The ShipStation API is REST-based. Authentication uses API key and API secret in the Authorization header. Endpoints cover orders, shipments, carriers, and warehouses. Poll for new orders or use webhooks if available for your plan. Batch operations are supported for bulk label creation. ## Twilio SMS Integration Twilio's REST API requires Account SID and Auth Token. The Messaging API endpoint is /2010-04-01/Accounts/{AccountSid}/Messages.json. For two-way messaging, configure a webhook URL to receive incoming messages. Consider using a queue for high-volume outbound SMS to avoid rate limits. # PentaCodes Technical Reference and Integration Documentation # Version 1.0 | Last Updated March 2025 # This document contains technical reference material for common integrations and deployment procedures. ## QuickBooks Online Integration The QuickBooks Online API uses OAuth 2.0 for authentication. You will need to register your application in the Intuit Developer Portal to obtain client credentials. The base URL for the API is https://quickbooks.api.intuit.com/v3/company/{realmId}. Common endpoints include /invoice, /customer, /payment, and /bill. Rate limits apply: 500 requests per minute for production apps. Always implement exponential backoff for 429 responses. ## Stripe Payment Integration Stripe provides both client-side (Stripe.js) and server-side APIs. For PCI compliance, never pass raw card numbers through your server—use Stripe Elements or the Payment Intents API. Webhooks are essential for handling asynchronous events like payment succeeded or subscription renewed. Configure your webhook endpoint to verify signatures using the Stripe-Signature header. ## ShipStation Integration The ShipStation API is REST-based. Authentication uses API key and API secret in the Authorization header. Endpoints cover orders, shipments, carriers, and warehouses. Poll for new orders or use webhooks if available for your plan. Batch operations are supported for bulk label creation. ## Twilio SMS Integration Twilio's REST API requires Account SID and Auth Token. The Messaging API endpoint is /2010-04-01/Accounts/{AccountSid}/Messages.json. For two-way messaging, configure a webhook URL to receive incoming messages. Consider using a queue for high-volume outbound SMS to avoid rate limits. # PentaCodes Technical Reference and Integration Documentation # Version 1.0 | Last Updated March 2025 # This document contains technical reference material for common integrations and deployment procedures. ## QuickBooks Online Integration The QuickBooks Online API uses OAuth 2.0 for authentication. You will need to register your application in the Intuit Developer Portal to obtain client credentials. The base URL for the API is https://quickbooks.api.intuit.com/v3/company/{realmId}. Common endpoints include /invoice, /customer, /payment, and /bill. Rate limits apply: 500 requests per minute for production apps. Always implement exponential backoff for 429 responses. ## Stripe Payment Integration Stripe provides both client-side (Stripe.js) and server-side APIs. For PCI compliance, never pass raw card numbers through your server—use Stripe Elements or the Payment Intents API. Webhooks are essential for handling asynchronous events like payment succeeded or subscription renewed. Configure your webhook endpoint to verify signatures using the Stripe-Signature header. ## ShipStation Integration The ShipStation API is REST-based. Authentication uses API key and API secret in the Authorization header. Endpoints cover orders, shipments, carriers, and warehouses. Poll for new orders or use webhooks if available for your plan. Batch operations are supported for bulk label creation. ## Twilio SMS Integration Twilio's REST API requires Account SID and Auth Token. The Messaging API endpoint is /2010-04-01/Accounts/{AccountSid}/Messages.json. For two-way messaging, configure a webhook URL to receive incoming messages. Consider using a queue for high-volume outbound SMS to avoid rate limits. # PentaCodes Technical Reference and Integration Documentation # Version 1.0 | Last Updated March 2025 # This document contains technical reference material for common integrations and deployment procedures. ## QuickBooks Online Integration The QuickBooks Online API uses OAuth 2.0 for authentication. You will need to register your application in the Intuit Developer Portal to obtain client credentials. The base URL for the API is https://quickbooks.api.intuit.com/v3/company/{realmId}. Common endpoints include /invoice, /customer, /payment, and /bill. Rate limits apply: 500 requests per minute for production apps. Always implement exponential backoff for 429 responses. ## Stripe Payment Integration Stripe provides both client-side (Stripe.js) and server-side APIs. For PCI compliance, never pass raw card numbers through your server—use Stripe Elements or the Payment Intents API. Webhooks are essential for handling asynchronous events like payment succeeded or subscription renewed. Configure your webhook endpoint to verify signatures using the Stripe-Signature header. ## ShipStation Integration The ShipStation API is REST-based. Authentication uses API key and API secret in the Authorization header. Endpoints cover orders, shipments, carriers, and warehouses. Poll for new orders or use webhooks if available for your plan. Batch operations are supported for bulk label creation. ## Twilio SMS Integration Twilio's REST API requires Account SID and Auth Token. The Messaging API endpoint is /2010-04-01/Accounts/{AccountSid}/Messages.json. For two-way messaging, configure a webhook URL to receive incoming messages. Consider using a queue for high-volume outbound SMS to avoid rate limits. # PentaCodes Technical Reference and Integration Documentation # Version 1.0 | Last Updated March 2025 # This document contains technical reference material for common integrations and deployment procedures. ## QuickBooks Online Integration The QuickBooks Online API uses OAuth 2.0 for authentication. You will need to register your application in the Intuit Developer Portal to obtain client credentials. The base URL for the API is https://quickbooks.api.intuit.com/v3/company/{realmId}. Common endpoints include /invoice, /customer, /payment, and /bill. Rate limits apply: 500 requests per minute for production apps. Always implement exponential backoff for 429 responses. ## Stripe Payment Integration Stripe provides both client-side (Stripe.js) and server-side APIs. For PCI compliance, never pass raw card numbers through your server—use Stripe Elements or the Payment Intents API. Webhooks are essential for handling asynchronous events like payment succeeded or subscription renewed. Configure your webhook endpoint to verify signatures using the Stripe-Signature header. ## ShipStation Integration The ShipStation API is REST-based. Authentication uses API key and API secret in the Authorization header. Endpoints cover orders, shipments, carriers, and warehouses. Poll for new orders or use webhooks if available for your plan. Batch operations are supported for bulk label creation. ## Twilio SMS Integration Twilio's REST API requires Account SID and Auth Token. The Messaging API endpoint is /2010-04-01/Accounts/{AccountSid}/Messages.json. For two-way messaging, configure a webhook URL to receive incoming messages. Consider using a queue for high-volume outbound SMS to avoid rate limits. # PentaCodes Technical Reference and Integration Documentation # Version 1.0 | Last Updated March 2025 # This document contains technical reference material for common integrations and deployment procedures. ## QuickBooks Online Integration The QuickBooks Online API uses OAuth 2.0 for authentication. You will need to register your application in the Intuit Developer Portal to obtain client credentials. The base URL for the API is https://quickbooks.api.intuit.com/v3/company/{realmId}. Common endpoints include /invoice, /customer, /payment, and /bill. Rate limits apply: 500 requests per minute for production apps. Always implement exponential backoff for 429 responses. ## Stripe Payment Integration Stripe provides both client-side (Stripe.js) and server-side APIs. For PCI compliance, never pass raw card numbers through your server—use Stripe Elements or the Payment Intents API. Webhooks are essential for handling asynchronous events like payment succeeded or subscription renewed. Configure your webhook endpoint to verify signatures using the Stripe-Signature header. ## ShipStation Integration The ShipStation API is REST-based. Authentication uses API key and API secret in the Authorization header. Endpoints cover orders, shipments, carriers, and warehouses. Poll for new orders or use webhooks if available for your plan. Batch operations are supported for bulk label creation. ## Twilio SMS Integration Twilio's REST API requires Account SID and Auth Token. The Messaging API endpoint is /2010-04-01/Accounts/{AccountSid}/Messages.json. For two-way messaging, configure a webhook URL to receive incoming messages. Consider using a queue for high-volume outbound SMS to avoid rate limits. # PentaCodes Technical Reference and Integration Documentation # Version 1.0 | Last Updated March 2025 # This document contains technical reference material for common integrations and deployment procedures. ## QuickBooks Online Integration The QuickBooks Online API uses OAuth 2.0 for authentication. You will need to register your application in the Intuit Developer Portal to obtain client credentials. The base URL for the API is https://quickbooks.api.intuit.com/v3/company/{realmId}. Common endpoints include /invoice, /customer, /payment, and /bill. Rate limits apply: 500 requests per minute for production apps. Always implement exponential backoff for 429 responses. ## Stripe Payment Integration Stripe provides both client-side (Stripe.js) and server-side APIs. For PCI compliance, never pass raw card numbers through your server—use Stripe Elements or the Payment Intents API. Webhooks are essential for handling asynchronous events like payment succeeded or subscription renewed. Configure your webhook endpoint to verify signatures using the Stripe-Signature header. ## ShipStation Integration The ShipStation API is REST-based. Authentication uses API key and API secret in the Authorization header. Endpoints cover orders, shipments, carriers, and warehouses. Poll for new orders or use webhooks if available for your plan. Batch operations are supported for bulk label creation. ## Twilio SMS Integration Twilio's REST API requires Account SID and Auth Token. The Messaging API endpoint is /2010-04-01/Accounts/{AccountSid}/Messages.json. For two-way messaging, configure a webhook URL to receive incoming messages. Consider using a queue for high-volume outbound SMS to avoid rate limits. # PentaCodes Technical Reference and Integration Documentation # Version 1.0 | Last Updated March 2025 # This document contains technical reference material for common integrations and deployment procedures. ## QuickBooks Online Integration The QuickBooks Online API uses OAuth 2.0 for authentication. You will need to register your application in the Intuit Developer Portal to obtain client credentials. The base URL for the API is https://quickbooks.api.intuit.com/v3/company/{realmId}. Common endpoints include /invoice, /customer, /payment, and /bill. Rate limits apply: 500 requests per minute for production apps. Always implement exponential backoff for 429 responses. ## Stripe Payment Integration Stripe provides both client-side (Stripe.js) and server-side APIs. For PCI compliance, never pass raw card numbers through your server—use Stripe Elements or the Payment Intents API. Webhooks are essential for handling asynchronous events like payment succeeded or subscription renewed. Configure your webhook endpoint to verify signatures using the Stripe-Signature header. ## ShipStation Integration The ShipStation API is REST-based. Authentication uses API key and API secret in the Authorization header. Endpoints cover orders, shipments, carriers, and warehouses. Poll for new orders or use webhooks if available for your plan. Batch operations are supported for bulk label creation. ## Twilio SMS Integration Twilio's REST API requires Account SID and Auth Token. The Messaging API endpoint is /2010-04-01/Accounts/{AccountSid}/Messages.json. For two-way messaging, configure a webhook URL to receive incoming messages. Consider using a queue for high-volume outbound SMS to avoid rate limits. # PentaCodes Technical Reference and Integration Documentation # Version 1.0 | Last Updated March 2025 # This document contains technical reference material for common integrations and deployment procedures. ## QuickBooks Online Integration The QuickBooks Online API uses OAuth 2.0 for authentication. You will need to register your application in the Intuit Developer Portal to obtain client credentials. The base URL for the API is https://quickbooks.api.intuit.com/v3/company/{realmId}. Common endpoints include /invoice, /customer, /payment, and /bill. Rate limits apply: 500 requests per minute for production apps. Always implement exponential backoff for 429 responses. ## Stripe Payment Integration Stripe provides both client-side (Stripe.js) and server-side APIs. For PCI compliance, never pass raw card numbers through your server—use Stripe Elements or the Payment Intents API. Webhooks are essential for handling asynchronous events like payment succeeded or subscription renewed. Configure your webhook endpoint to verify signatures using the Stripe-Signature header. ## ShipStation Integration The ShipStation API is REST-based. Authentication uses API key and API secret in the Authorization header. Endpoints cover orders, shipments, carriers, and warehouses. Poll for new orders or use webhooks if available for your plan. Batch operations are supported for bulk label creation. ## Twilio SMS Integration Twilio's REST API requires Account SID and Auth Token. The Messaging API endpoint is /2010-04-01/Accounts/{AccountSid}/Messages.json. For two-way messaging, configure a webhook URL to receive incoming messages. Consider using a queue for high-volume outbound SMS to avoid rate limits. # PentaCodes Technical Reference and Integration Documentation # Version 1.0 | Last Updated March 2025 # This document contains technical reference material for common integrations and deployment procedures. ## QuickBooks Online Integration The QuickBooks Online API uses OAuth 2.0 for authentication. You will need to register your application in the Intuit Developer Portal to obtain client credentials. The base URL for the API is https://quickbooks.api.intuit.com/v3/company/{realmId}. Common endpoints include /invoice, /customer, /payment, and /bill. Rate limits apply: 500 requests per minute for production apps. Always implement exponential backoff for 429 responses. ## Stripe Payment Integration Stripe provides both client-side (Stripe.js) and server-side APIs. For PCI compliance, never pass raw card numbers through your server—use Stripe Elements or the Payment Intents API. Webhooks are essential for handling asynchronous events like payment succeeded or subscription renewed. Configure your webhook endpoint to verify signatures using the Stripe-Signature header. ## ShipStation Integration The ShipStation API is REST-based. Authentication uses API key and API secret in the Authorization header. Endpoints cover orders, shipments, carriers, and warehouses. Poll for new orders or use webhooks if available for your plan. Batch operations are supported for bulk label creation. ## Twilio SMS Integration Twilio's REST API requires Account SID and Auth Token. The Messaging API endpoint is /2010-04-01/Accounts/{AccountSid}/Messages.json. For two-way messaging, configure a webhook URL to receive incoming messages. Consider using a queue for high-volume outbound SMS to avoid rate limits. # PentaCodes Technical Reference and Integration Documentation # Version 1.0 | Last Updated March 2025 # This document contains technical reference material for common integrations and deployment procedures. ## QuickBooks Online Integration The QuickBooks Online API uses OAuth 2.0 for authentication. You will need to register your application in the Intuit Developer Portal to obtain client credentials. The base URL for the API is https://quickbooks.api.intuit.com/v3/company/{realmId}. Common endpoints include /invoice, /customer, /payment, and /bill. Rate limits apply: 500 requests per minute for production apps. Always implement exponential backoff for 429 responses. ## Stripe Payment Integration Stripe provides both client-side (Stripe.js) and server-side APIs. For PCI compliance, never pass raw card numbers through your server—use Stripe Elements or the Payment Intents API. Webhooks are essential for handling asynchronous events like payment succeeded or subscription renewed. Configure your webhook endpoint to verify signatures using the Stripe-Signature header. ## ShipStation Integration The ShipStation API is REST-based. Authentication uses API key and API secret in the Authorization header. Endpoints cover orders, shipments, carriers, and warehouses. Poll for new orders or use webhooks if available for your plan. Batch operations are supported for bulk label creation. ## Twilio SMS Integration Twilio's REST API requires Account SID and Auth Token. The Messaging API endpoint is /2010-04-01/Accounts/{AccountSid}/Messages.json. For two-way messaging, configure a webhook URL to receive incoming messages. Consider using a queue for high-volume outbound SMS to avoid rate limits. # PentaCodes Technical Reference and Integration Documentation # Version 1.0 | Last Updated March 2025 # This document contains technical reference material for common integrations and deployment procedures. ## QuickBooks Online Integration The QuickBooks Online API uses OAuth 2.0 for authentication. You will need to register your application in the Intuit Developer Portal to obtain client credentials. The base URL for the API is https://quickbooks.api.intuit.com/v3/company/{realmId}. Common endpoints include /invoice, /customer, /payment, and /bill. Rate limits apply: 500 requests per minute for production apps. Always implement exponential backoff for 429 responses. ## Stripe Payment Integration Stripe provides both client-side (Stripe.js) and server-side APIs. For PCI compliance, never pass raw card numbers through your server—use Stripe Elements or the Payment Intents API. Webhooks are essential for handling asynchronous events like payment succeeded or subscription renewed. Configure your webhook endpoint to verify signatures using the Stripe-Signature header. ## ShipStation Integration The ShipStation API is REST-based. Authentication uses API key and API secret in the Authorization header. Endpoints cover orders, shipments, carriers, and warehouses. Poll for new orders or use webhooks if available for your plan. Batch operations are supported for bulk label creation. ## Twilio SMS Integration Twilio's REST API requires Account SID and Auth Token. The Messaging API endpoint is /2010-04-01/Accounts/{AccountSid}/Messages.json. For two-way messaging, configure a webhook URL to receive incoming messages. Consider using a queue for high-volume outbound SMS to avoid rate limits. # PentaCodes Technical Reference and Integration Documentation # Version 1.0 | Last Updated March 2025 # This document contains technical reference material for common integrations and deployment procedures. ## QuickBooks Online Integration The QuickBooks Online API uses OAuth 2.0 for authentication. You will need to register your application in the Intuit Developer Portal to obtain client credentials. The base URL for the API is https://quickbooks.api.intuit.com/v3/company/{realmId}. Common endpoints include /invoice, /customer, /payment, and /bill. Rate limits apply: 500 requests per minute for production apps. Always implement exponential backoff for 429 responses. ## Stripe Payment Integration Stripe provides both client-side (Stripe.js) and server-side APIs. For PCI compliance, never pass raw card numbers through your server—use Stripe Elements or the Payment Intents API. Webhooks are essential for handling asynchronous events like payment succeeded or subscription renewed. Configure your webhook endpoint to verify signatures using the Stripe-Signature header. ## ShipStation Integration The ShipStation API is REST-based. Authentication uses API key and API secret in the Authorization header. Endpoints cover orders, shipments, carriers, and warehouses. Poll for new orders or use webhooks if available for your plan. Batch operations are supported for bulk label creation. ## Twilio SMS Integration Twilio's REST API requires Account SID and Auth Token. The Messaging API endpoint is /2010-04-01/Accounts/{AccountSid}/Messages.json. For two-way messaging, configure a webhook URL to receive incoming messages. Consider using a queue for high-volume outbound SMS to avoid rate limits. # PentaCodes Technical Reference and Integration Documentation # Version 1.0 | Last Updated March 2025 # This document contains technical reference material for common integrations and deployment procedures. ## QuickBooks Online Integration The QuickBooks Online API uses OAuth 2.0 for authentication. You will need to register your application in the Intuit Developer Portal to obtain client credentials. The base URL for the API is https://quickbooks.api.intuit.com/v3/company/{realmId}. Common endpoints include /invoice, /customer, /payment, and /bill. Rate limits apply: 500 requests per minute for production apps. Always implement exponential backoff for 429 responses. ## Stripe Payment Integration Stripe provides both client-side (Stripe.js) and server-side APIs. For PCI compliance, never pass raw card numbers through your server—use Stripe Elements or the Payment Intents API. Webhooks are essential for handling asynchronous events like payment succeeded or subscription renewed. Configure your webhook endpoint to verify signatures using the Stripe-Signature header. ## ShipStation Integration The ShipStation API is REST-based. Authentication uses API key and API secret in the Authorization header. Endpoints cover orders, shipments, carriers, and warehouses. Poll for new orders or use webhooks if available for your plan. Batch operations are supported for bulk label creation. ## Twilio SMS Integration Twilio's REST API requires Account SID and Auth Token. The Messaging API endpoint is /2010-04-01/Accounts/{AccountSid}/Messages.json. For two-way messaging, configure a webhook URL to receive incoming messages. Consider using a queue for high-volume outbound SMS to avoid rate limits. # PentaCodes Technical Reference and Integration Documentation # Version 1.0 | Last Updated March 2025 # This document contains technical reference material for common integrations and deployment procedures. ## QuickBooks Online Integration The QuickBooks Online API uses OAuth 2.0 for authentication. You will need to register your application in the Intuit Developer Portal to obtain client credentials. The base URL for the API is https://quickbooks.api.intuit.com/v3/company/{realmId}. Common endpoints include /invoice, /customer, /payment, and /bill. Rate limits apply: 500 requests per minute for production apps. Always implement exponential backoff for 429 responses. ## Stripe Payment Integration Stripe provides both client-side (Stripe.js) and server-side APIs. For PCI compliance, never pass raw card numbers through your server—use Stripe Elements or the Payment Intents API. Webhooks are essential for handling asynchronous events like payment succeeded or subscription renewed. Configure your webhook endpoint to verify signatures using the Stripe-Signature header. ## ShipStation Integration The ShipStation API is REST-based. Authentication uses API key and API secret in the Authorization header. Endpoints cover orders, shipments, carriers, and warehouses. Poll for new orders or use webhooks if available for your plan. Batch operations are supported for bulk label creation. ## Twilio SMS Integration Twilio's REST API requires Account SID and Auth Token. The Messaging API endpoint is /2010-04-01/Accounts/{AccountSid}/Messages.json. For two-way messaging, configure a webhook URL to receive incoming messages. Consider using a queue for high-volume outbound SMS to avoid rate limits. # PentaCodes Technical Reference and Integration Documentation # Version 1.0 | Last Updated March 2025 # This document contains technical reference material for common integrations and deployment procedures. ## QuickBooks Online Integration The QuickBooks Online API uses OAuth 2.0 for authentication. You will need to register your application in the Intuit Developer Portal to obtain client credentials. The base URL for the API is https://quickbooks.api.intuit.com/v3/company/{realmId}. Common endpoints include /invoice, /customer, /payment, and /bill. Rate limits apply: 500 requests per minute for production apps. Always implement exponential backoff for 429 responses. ## Stripe Payment Integration Stripe provides both client-side (Stripe.js) and server-side APIs. For PCI compliance, never pass raw card numbers through your server—use Stripe Elements or the Payment Intents API. Webhooks are essential for handling asynchronous events like payment succeeded or subscription renewed. Configure your webhook endpoint to verify signatures using the Stripe-Signature header. ## ShipStation Integration The ShipStation API is REST-based. Authentication uses API key and API secret in the Authorization header. Endpoints cover orders, shipments, carriers, and warehouses. Poll for new orders or use webhooks if available for your plan. Batch operations are supported for bulk label creation. ## Twilio SMS Integration Twilio's REST API requires Account SID and Auth Token. The Messaging API endpoint is /2010-04-01/Accounts/{AccountSid}/Messages.json. For two-way messaging, configure a webhook URL to receive incoming messages. Consider using a queue for high-volume outbound SMS to avoid rate limits. # PentaCodes Technical Reference and Integration Documentation # Version 1.0 | Last Updated March 2025 # This document contains technical reference material for common integrations and deployment procedures. ## QuickBooks Online Integration The QuickBooks Online API uses OAuth 2.0 for authentication. You will need to register your application in the Intuit Developer Portal to obtain client credentials. The base URL for the API is https://quickbooks.api.intuit.com/v3/company/{realmId}. Common endpoints include /invoice, /customer, /payment, and /bill. Rate limits apply: 500 requests per minute for production apps. Always implement exponential backoff for 429 responses. ## Stripe Payment Integration Stripe provides both client-side (Stripe.js) and server-side APIs. For PCI compliance, never pass raw card numbers through your server—use Stripe Elements or the Payment Intents API. Webhooks are essential for handling asynchronous events like payment succeeded or subscription renewed. Configure your webhook endpoint to verify signatures using the Stripe-Signature header. ## ShipStation Integration The ShipStation API is REST-based. Authentication uses API key and API secret in the Authorization header. Endpoints cover orders, shipments, carriers, and warehouses. Poll for new orders or use webhooks if available for your plan. Batch operations are supported for bulk label creation. ## Twilio SMS Integration Twilio's REST API requires Account SID and Auth Token. The Messaging API endpoint is /2010-04-01/Accounts/{AccountSid}/Messages.json. For two-way messaging, configure a webhook URL to receive incoming messages. Consider using a queue for high-volume outbound SMS to avoid rate limits. # PentaCodes Technical Reference and Integration Documentation # Version 1.0 | Last Updated March 2025 # This document contains technical reference material for common integrations and deployment procedures. ## QuickBooks Online Integration The QuickBooks Online API uses OAuth 2.0 for authentication. You will need to register your application in the Intuit Developer Portal to obtain client credentials. The base URL for the API is https://quickbooks.api.intuit.com/v3/company/{realmId}. Common endpoints include /invoice, /customer, /payment, and /bill. Rate limits apply: 500 requests per minute for production apps. Always implement exponential backoff for 429 responses. ## Stripe Payment Integration Stripe provides both client-side (Stripe.js) and server-side APIs. For PCI compliance, never pass raw card numbers through your server—use Stripe Elements or the Payment Intents API. Webhooks are essential for handling asynchronous events like payment succeeded or subscription renewed. Configure your webhook endpoint to verify signatures using the Stripe-Signature header. ## ShipStation Integration The ShipStation API is REST-based. Authentication uses API key and API secret in the Authorization header. Endpoints cover orders, shipments, carriers, and warehouses. Poll for new orders or use webhooks if available for your plan. Batch operations are supported for bulk label creation. ## Twilio SMS Integration Twilio's REST API requires Account SID and Auth Token. The Messaging API endpoint is /2010-04-01/Accounts/{AccountSid}/Messages.json. For two-way messaging, configure a webhook URL to receive incoming messages. Consider using a queue for high-volume outbound SMS to avoid rate limits. # PentaCodes Technical Reference and Integration Documentation # Version 1.0 | Last Updated March 2025 # This document contains technical reference material for common integrations and deployment procedures. ## QuickBooks Online Integration The QuickBooks Online API uses OAuth 2.0 for authentication. You will need to register your application in the Intuit Developer Portal to obtain client credentials. The base URL for the API is https://quickbooks.api.intuit.com/v3/company/{realmId}. Common endpoints include /invoice, /customer, /payment, and /bill. Rate limits apply: 500 requests per minute for production apps. Always implement exponential backoff for 429 responses. ## Stripe Payment Integration Stripe provides both client-side (Stripe.js) and server-side APIs. For PCI compliance, never pass raw card numbers through your server—use Stripe Elements or the Payment Intents API. Webhooks are essential for handling asynchronous events like payment succeeded or subscription renewed. Configure your webhook endpoint to verify signatures using the Stripe-Signature header. ## ShipStation Integration The ShipStation API is REST-based. Authentication uses API key and API secret in the Authorization header. Endpoints cover orders, shipments, carriers, and warehouses. Poll for new orders or use webhooks if available for your plan. Batch operations are supported for bulk label creation. ## Twilio SMS Integration Twilio's REST API requires Account SID and Auth Token. The Messaging API endpoint is /2010-04-01/Accounts/{AccountSid}/Messages.json. For two-way messaging, configure a webhook URL to receive incoming messages. Consider using a queue for high-volume outbound SMS to avoid rate limits. # PentaCodes Technical Reference and Integration Documentation # Version 1.0 | Last Updated March 2025 # This document contains technical reference material for common integrations and deployment procedures. ## QuickBooks Online Integration The QuickBooks Online API uses OAuth 2.0 for authentication. You will need to register your application in the Intuit Developer Portal to obtain client credentials. The base URL for the API is https://quickbooks.api.intuit.com/v3/company/{realmId}. Common endpoints include /invoice, /customer, /payment, and /bill. Rate limits apply: 500 requests per minute for production apps. Always implement exponential backoff for 429 responses. ## Stripe Payment Integration Stripe provides both client-side (Stripe.js) and server-side APIs. For PCI compliance, never pass raw card numbers through your server—use Stripe Elements or the Payment Intents API. Webhooks are essential for handling asynchronous events like payment succeeded or subscription renewed. Configure your webhook endpoint to verify signatures using the Stripe-Signature header. ## ShipStation Integration The ShipStation API is REST-based. Authentication uses API key and API secret in the Authorization header. Endpoints cover orders, shipments, carriers, and warehouses. Poll for new orders or use webhooks if available for your plan. Batch operations are supported for bulk label creation. ## Twilio SMS Integration Twilio's REST API requires Account SID and Auth Token. The Messaging API endpoint is /2010-04-01/Accounts/{AccountSid}/Messages.json. For two-way messaging, configure a webhook URL to receive incoming messages. Consider using a queue for high-volume outbound SMS to avoid rate limits. # PentaCodes Technical Reference and Integration Documentation # Version 1.0 | Last Updated March 2025 # This document contains technical reference material for common integrations and deployment procedures. ## QuickBooks Online Integration The QuickBooks Online API uses OAuth 2.0 for authentication. You will need to register your application in the Intuit Developer Portal to obtain client credentials. The base URL for the API is https://quickbooks.api.intuit.com/v3/company/{realmId}. Common endpoints include /invoice, /customer, /payment, and /bill. Rate limits apply: 500 requests per minute for production apps. Always implement exponential backoff for 429 responses. ## Stripe Payment Integration Stripe provides both client-side (Stripe.js) and server-side APIs. For PCI compliance, never pass raw card numbers through your server—use Stripe Elements or the Payment Intents API. Webhooks are essential for handling asynchronous events like payment succeeded or subscription renewed. Configure your webhook endpoint to verify signatures using the Stripe-Signature header. ## ShipStation Integration The ShipStation API is REST-based. Authentication uses API key and API secret in the Authorization header. Endpoints cover orders, shipments, carriers, and warehouses. Poll for new orders or use webhooks if available for your plan. Batch operations are supported for bulk label creation. ## Twilio SMS Integration Twilio's REST API requires Account SID and Auth Token. The Messaging API endpoint is /2010-04-01/Accounts/{AccountSid}/Messages.json. For two-way messaging, configure a webhook URL to receive incoming messages. Consider using a queue for high-volume outbound SMS to avoid rate limits. # PentaCodes Technical Reference and Integration Documentation # Version 1.0 | Last Updated March 2025 # This document contains technical reference material for common integrations and deployment procedures. ## QuickBooks Online Integration The QuickBooks Online API uses OAuth 2.0 for authentication. You will need to register your application in the Intuit Developer Portal to obtain client credentials. The base URL for the API is https://quickbooks.api.intuit.com/v3/company/{realmId}. Common endpoints include /invoice, /customer, /payment, and /bill. Rate limits apply: 500 requests per minute for production apps. Always implement exponential backoff for 429 responses. ## Stripe Payment Integration Stripe provides both client-side (Stripe.js) and server-side APIs. For PCI compliance, never pass raw card numbers through your server—use Stripe Elements or the Payment Intents API. Webhooks are essential for handling asynchronous events like payment succeeded or subscription renewed. Configure your webhook endpoint to verify signatures using the Stripe-Signature header. ## ShipStation Integration The ShipStation API is REST-based. Authentication uses API key and API secret in the Authorization header. Endpoints cover orders, shipments, carriers, and warehouses. Poll for new orders or use webhooks if available for your plan. Batch operations are supported for bulk label creation. ## Twilio SMS Integration Twilio's REST API requires Account SID and Auth Token. The Messaging API endpoint is /2010-04-01/Accounts/{AccountSid}/Messages.json. For two-way messaging, configure a webhook URL to receive incoming messages. Consider using a queue for high-volume outbound SMS to avoid rate limits. # PentaCodes Technical Reference and Integration Documentation # Version 1.0 | Last Updated March 2025 # This document contains technical reference material for common integrations and deployment procedures. ## QuickBooks Online Integration The QuickBooks Online API uses OAuth 2.0 for authentication. You will need to register your application in the Intuit Developer Portal to obtain client credentials. The base URL for the API is https://quickbooks.api.intuit.com/v3/company/{realmId}. Common endpoints include /invoice, /customer, /payment, and /bill. Rate limits apply: 500 requests per minute for production apps. Always implement exponential backoff for 429 responses. ## Stripe Payment Integration Stripe provides both client-side (Stripe.js) and server-side APIs. For PCI compliance, never pass raw card numbers through your server—use Stripe Elements or the Payment Intents API. Webhooks are essential for handling asynchronous events like payment succeeded or subscription renewed. Configure your webhook endpoint to verify signatures using the Stripe-Signature header. ## ShipStation Integration The ShipStation API is REST-based. Authentication uses API key and API secret in the Authorization header. Endpoints cover orders, shipments, carriers, and warehouses. Poll for new orders or use webhooks if available for your plan. Batch operations are supported for bulk label creation. ## Twilio SMS Integration Twilio's REST API requires Account SID and Auth Token. The Messaging API endpoint is /2010-04-01/Accounts/{AccountSid}/Messages.json. For two-way messaging, configure a webhook URL to receive incoming messages. Consider using a queue for high-volume outbound SMS to avoid rate limits. # PentaCodes Technical Reference and Integration Documentation # Version 1.0 | Last Updated March 2025 # This document contains technical reference material for common integrations and deployment procedures. ## QuickBooks Online Integration The QuickBooks Online API uses OAuth 2.0 for authentication. You will need to register your application in the Intuit Developer Portal to obtain client credentials. The base URL for the API is https://quickbooks.api.intuit.com/v3/company/{realmId}. Common endpoints include /invoice, /customer, /payment, and /bill. Rate limits apply: 500 requests per minute for production apps. Always implement exponential backoff for 429 responses. ## Stripe Payment Integration Stripe provides both client-side (Stripe.js) and server-side APIs. For PCI compliance, never pass raw card numbers through your server—use Stripe Elements or the Payment Intents API. Webhooks are essential for handling asynchronous events like payment succeeded or subscription renewed. Configure your webhook endpoint to verify signatures using the Stripe-Signature header. ## ShipStation Integration The ShipStation API is REST-based. Authentication uses API key and API secret in the Authorization header. Endpoints cover orders, shipments, carriers, and warehouses. Poll for new orders or use webhooks if available for your plan. Batch operations are supported for bulk label creation. ## Twilio SMS Integration Twilio's REST API requires Account SID and Auth Token. The Messaging API endpoint is /2010-04-01/Accounts/{AccountSid}/Messages.json. For two-way messaging, configure a webhook URL to receive incoming messages. Consider using a queue for high-volume outbound SMS to avoid rate limits. # PentaCodes Technical Reference and Integration Documentation # Version 1.0 | Last Updated March 2025 # This document contains technical reference material for common integrations and deployment procedures. ## QuickBooks Online Integration The QuickBooks Online API uses OAuth 2.0 for authentication. You will need to register your application in the Intuit Developer Portal to obtain client credentials. The base URL for the API is https://quickbooks.api.intuit.com/v3/company/{realmId}. Common endpoints include /invoice, /customer, /payment, and /bill. Rate limits apply: 500 requests per minute for production apps. Always implement exponential backoff for 429 responses. ## Stripe Payment Integration Stripe provides both client-side (Stripe.js) and server-side APIs. For PCI compliance, never pass raw card numbers through your server—use Stripe Elements or the Payment Intents API. Webhooks are essential for handling asynchronous events like payment succeeded or subscription renewed. Configure your webhook endpoint to verify signatures using the Stripe-Signature header. ## ShipStation Integration The ShipStation API is REST-based. Authentication uses API key and API secret in the Authorization header. Endpoints cover orders, shipments, carriers, and warehouses. Poll for new orders or use webhooks if available for your plan. Batch operations are supported for bulk label creation. ## Twilio SMS Integration Twilio's REST API requires Account SID and Auth Token. The Messaging API endpoint is /2010-04-01/Accounts/{AccountSid}/Messages.json. For two-way messaging, configure a webhook URL to receive incoming messages. Consider using a queue for high-volume outbound SMS to avoid rate limits. # PentaCodes Technical Reference and Integration Documentation # Version 1.0 | Last Updated March 2025 # This document contains technical reference material for common integrations and deployment procedures. ## QuickBooks Online Integration The QuickBooks Online API uses OAuth 2.0 for authentication. You will need to register your application in the Intuit Developer Portal to obtain client credentials. The base URL for the API is https://quickbooks.api.intuit.com/v3/company/{realmId}. Common endpoints include /invoice, /customer, /payment, and /bill. Rate limits apply: 500 requests per minute for production apps. Always implement exponential backoff for 429 responses. ## Stripe Payment Integration Stripe provides both client-side (Stripe.js) and server-side APIs. For PCI compliance, never pass raw card numbers through your server—use Stripe Elements or the Payment Intents API. Webhooks are essential for handling asynchronous events like payment succeeded or subscription renewed. Configure your webhook endpoint to verify signatures using the Stripe-Signature header. ## ShipStation Integration The ShipStation API is REST-based. Authentication uses API key and API secret in the Authorization header. Endpoints cover orders, shipments, carriers, and warehouses. Poll for new orders or use webhooks if available for your plan. Batch operations are supported for bulk label creation. ## Twilio SMS Integration Twilio's REST API requires Account SID and Auth Token. The Messaging API endpoint is /2010-04-01/Accounts/{AccountSid}/Messages.json. For two-way messaging, configure a webhook URL to receive incoming messages. Consider using a queue for high-volume outbound SMS to avoid rate limits. # PentaCodes Technical Reference and Integration Documentation # Version 1.0 | Last Updated March 2025 # This document contains technical reference material for common integrations and deployment procedures. ## QuickBooks Online Integration The QuickBooks Online API uses OAuth 2.0 for authentication. You will need to register your application in the Intuit Developer Portal to obtain client credentials. The base URL for the API is https://quickbooks.api.intuit.com/v3/company/{realmId}. Common endpoints include /invoice, /customer, /payment, and /bill. Rate limits apply: 500 requests per minute for production apps. Always implement exponential backoff for 429 responses. ## Stripe Payment Integration Stripe provides both client-side (Stripe.js) and server-side APIs. For PCI compliance, never pass raw card numbers through your server—use Stripe Elements or the Payment Intents API. Webhooks are essential for handling asynchronous events like payment succeeded or subscription renewed. Configure your webhook endpoint to verify signatures using the Stripe-Signature header. ## ShipStation Integration The ShipStation API is REST-based. Authentication uses API key and API secret in the Authorization header. Endpoints cover orders, shipments, carriers, and warehouses. Poll for new orders or use webhooks if available for your plan. Batch operations are supported for bulk label creation. ## Twilio SMS Integration Twilio's REST API requires Account SID and Auth Token. The Messaging API endpoint is /2010-04-01/Accounts/{AccountSid}/Messages.json. For two-way messaging, configure a webhook URL to receive incoming messages. Consider using a queue for high-volume outbound SMS to avoid rate limits. # PentaCodes Technical Reference and Integration Documentation # Version 1.0 | Last Updated March 2025 # This document contains technical reference material for common integrations and deployment procedures. ## QuickBooks Online Integration The QuickBooks Online API uses OAuth 2.0 for authentication. You will need to register your application in the Intuit Developer Portal to obtain client credentials. The base URL for the API is https://quickbooks.api.intuit.com/v3/company/{realmId}. Common endpoints include /invoice, /customer, /payment, and /bill. Rate limits apply: 500 requests per minute for production apps. Always implement exponential backoff for 429 responses. ## Stripe Payment Integration Stripe provides both client-side (Stripe.js) and server-side APIs. For PCI compliance, never pass raw card numbers through your server—use Stripe Elements or the Payment Intents API. Webhooks are essential for handling asynchronous events like payment succeeded or subscription renewed. Configure your webhook endpoint to verify signatures using the Stripe-Signature header. ## ShipStation Integration The ShipStation API is REST-based. Authentication uses API key and API secret in the Authorization header. Endpoints cover orders, shipments, carriers, and warehouses. Poll for new orders or use webhooks if available for your plan. Batch operations are supported for bulk label creation. ## Twilio SMS Integration Twilio's REST API requires Account SID and Auth Token. The Messaging API endpoint is /2010-04-01/Accounts/{AccountSid}/Messages.json. For two-way messaging, configure a webhook URL to receive incoming messages. Consider using a queue for high-volume outbound SMS to avoid rate limits. # PentaCodes Technical Reference and Integration Documentation # Version 1.0 | Last Updated March 2025 # This document contains technical reference material for common integrations and deployment procedures. ## QuickBooks Online Integration The QuickBooks Online API uses OAuth 2.0 for authentication. You will need to register your application in the Intuit Developer Portal to obtain client credentials. The base URL for the API is https://quickbooks.api.intuit.com/v3/company/{realmId}. Common endpoints include /invoice, /customer, /payment, and /bill. Rate limits apply: 500 requests per minute for production apps. Always implement exponential backoff for 429 responses. ## Stripe Payment Integration Stripe provides both client-side (Stripe.js) and server-side APIs. For PCI compliance, never pass raw card numbers through your server—use Stripe Elements or the Payment Intents API. Webhooks are essential for handling asynchronous events like payment succeeded or subscription renewed. Configure your webhook endpoint to verify signatures using the Stripe-Signature header. ## ShipStation Integration The ShipStation API is REST-based. Authentication uses API key and API secret in the Authorization header. Endpoints cover orders, shipments, carriers, and warehouses. Poll for new orders or use webhooks if available for your plan. Batch operations are supported for bulk label creation. ## Twilio SMS Integration Twilio's REST API requires Account SID and Auth Token. The Messaging API endpoint is /2010-04-01/Accounts/{AccountSid}/Messages.json. For two-way messaging, configure a webhook URL to receive incoming messages. Consider using a queue for high-volume outbound SMS to avoid rate limits. # PentaCodes Technical Reference and Integration Documentation # Version 1.0 | Last Updated March 2025 # This document contains technical reference material for common integrations and deployment procedures. ## QuickBooks Online Integration The QuickBooks Online API uses OAuth 2.0 for authentication. You will need to register your application in the Intuit Developer Portal to obtain client credentials. The base URL for the API is https://quickbooks.api.intuit.com/v3/company/{realmId}. Common endpoints include /invoice, /customer, /payment, and /bill. Rate limits apply: 500 requests per minute for production apps. Always implement exponential backoff for 429 responses. ## Stripe Payment Integration Stripe provides both client-side (Stripe.js) and server-side APIs. For PCI compliance, never pass raw card numbers through your server—use Stripe Elements or the Payment Intents API. Webhooks are essential for handling asynchronous events like payment succeeded or subscription renewed. Configure your webhook endpoint to verify signatures using the Stripe-Signature header. ## ShipStation Integration The ShipStation API is REST-based. Authentication uses API key and API secret in the Authorization header. Endpoints cover orders, shipments, carriers, and warehouses. Poll for new orders or use webhooks if available for your plan. Batch operations are supported for bulk label creation. ## Twilio SMS Integration Twilio's REST API requires Account SID and Auth Token. The Messaging API endpoint is /2010-04-01/Accounts/{AccountSid}/Messages.json. For two-way messaging, configure a webhook URL to receive incoming messages. Consider using a queue for high-volume outbound SMS to avoid rate limits. # PentaCodes Technical Reference and Integration Documentation # Version 1.0 | Last Updated March 2025 # This document contains technical reference material for common integrations and deployment procedures. ## QuickBooks Online Integration The QuickBooks Online API uses OAuth 2.0 for authentication. You will need to register your application in the Intuit Developer Portal to obtain client credentials. The base URL for the API is https://quickbooks.api.intuit.com/v3/company/{realmId}. Common endpoints include /invoice, /customer, /payment, and /bill. Rate limits apply: 500 requests per minute for production apps. Always implement exponential backoff for 429 responses. ## Stripe Payment Integration Stripe provides both client-side (Stripe.js) and server-side APIs. For PCI compliance, never pass raw card numbers through your server—use Stripe Elements or the Payment Intents API. Webhooks are essential for handling asynchronous events like payment succeeded or subscription renewed. Configure your webhook endpoint to verify signatures using the Stripe-Signature header. ## ShipStation Integration The ShipStation API is REST-based. Authentication uses API key and API secret in the Authorization header. Endpoints cover orders, shipments, carriers, and warehouses. Poll for new orders or use webhooks if available for your plan. Batch operations are supported for bulk label creation. ## Twilio SMS Integration Twilio's REST API requires Account SID and Auth Token. The Messaging API endpoint is /2010-04-01/Accounts/{AccountSid}/Messages.json. For two-way messaging, configure a webhook URL to receive incoming messages. Consider using a queue for high-volume outbound SMS to avoid rate limits. # PentaCodes Technical Reference and Integration Documentation # Version 1.0 | Last Updated March 2025 # This document contains technical reference material for common integrations and deployment procedures. ## QuickBooks Online Integration The QuickBooks Online API uses OAuth 2.0 for authentication. You will need to register your application in the Intuit Developer Portal to obtain client credentials. The base URL for the API is https://quickbooks.api.intuit.com/v3/company/{realmId}. Common endpoints include /invoice, /customer, /payment, and /bill. Rate limits apply: 500 requests per minute for production apps. Always implement exponential backoff for 429 responses. ## Stripe Payment Integration Stripe provides both client-side (Stripe.js) and server-side APIs. For PCI compliance, never pass raw card numbers through your server—use Stripe Elements or the Payment Intents API. Webhooks are essential for handling asynchronous events like payment succeeded or subscription renewed. Configure your webhook endpoint to verify signatures using the Stripe-Signature header. ## ShipStation Integration The ShipStation API is REST-based. Authentication uses API key and API secret in the Authorization header. Endpoints cover orders, shipments, carriers, and warehouses. Poll for new orders or use webhooks if available for your plan. Batch operations are supported for bulk label creation. ## Twilio SMS Integration Twilio's REST API requires Account SID and Auth Token. The Messaging API endpoint is /2010-04-01/Accounts/{AccountSid}/Messages.json. For two-way messaging, configure a webhook URL to receive incoming messages. Consider using a queue for high-volume outbound SMS to avoid rate limits. # PentaCodes Technical Reference and Integration Documentation # Version 1.0 | Last Updated March 2025 # This document contains technical reference material for common integrations and deployment procedures. ## QuickBooks Online Integration The QuickBooks Online API uses OAuth 2.0 for authentication. You will need to register your application in the Intuit Developer Portal to obtain client credentials. The base URL for the API is https://quickbooks.api.intuit.com/v3/company/{realmId}. Common endpoints include /invoice, /customer, /payment, and /bill. Rate limits apply: 500 requests per minute for production apps. Always implement exponential backoff for 429 responses. ## Stripe Payment Integration Stripe provides both client-side (Stripe.js) and server-side APIs. For PCI compliance, never pass raw card numbers through your server—use Stripe Elements or the Payment Intents API. Webhooks are essential for handling asynchronous events like payment succeeded or subscription renewed. Configure your webhook endpoint to verify signatures using the Stripe-Signature header. ## ShipStation Integration The ShipStation API is REST-based. Authentication uses API key and API secret in the Authorization header. Endpoints cover orders, shipments, carriers, and warehouses. Poll for new orders or use webhooks if available for your plan. Batch operations are supported for bulk label creation. ## Twilio SMS Integration Twilio's REST API requires Account SID and Auth Token. The Messaging API endpoint is /2010-04-01/Accounts/{AccountSid}/Messages.json. For two-way messaging, configure a webhook URL to receive incoming messages. Consider using a queue for high-volume outbound SMS to avoid rate limits. # PentaCodes Technical Reference and Integration Documentation # Version 1.0 | Last Updated March 2025 # This document contains technical reference material for common integrations and deployment procedures. ## QuickBooks Online Integration The QuickBooks Online API uses OAuth 2.0 for authentication. You will need to register your application in the Intuit Developer Portal to obtain client credentials. The base URL for the API is https://quickbooks.api.intuit.com/v3/company/{realmId}. Common endpoints include /invoice, /customer, /payment, and /bill. Rate limits apply: 500 requests per minute for production apps. Always implement exponential backoff for 429 responses. ## Stripe Payment Integration Stripe provides both client-side (Stripe.js) and server-side APIs. For PCI compliance, never pass raw card numbers through your server—use Stripe Elements or the Payment Intents API. Webhooks are essential for handling asynchronous events like payment succeeded or subscription renewed. Configure your webhook endpoint to verify signatures using the Stripe-Signature header. ## ShipStation Integration The ShipStation API is REST-based. Authentication uses API key and API secret in the Authorization header. Endpoints cover orders, shipments, carriers, and warehouses. Poll for new orders or use webhooks if available for your plan. Batch operations are supported for bulk label creation. ## Twilio SMS Integration Twilio's REST API requires Account SID and Auth Token. The Messaging API endpoint is /2010-04-01/Accounts/{AccountSid}/Messages.json. For two-way messaging, configure a webhook URL to receive incoming messages. Consider using a queue for high-volume outbound SMS to avoid rate limits. # PentaCodes Technical Reference and Integration Documentation # Version 1.0 | Last Updated March 2025 # This document contains technical reference material for common integrations and deployment procedures. ## QuickBooks Online Integration The QuickBooks Online API uses OAuth 2.0 for authentication. You will need to register your application in the Intuit Developer Portal to obtain client credentials. The base URL for the API is https://quickbooks.api.intuit.com/v3/company/{realmId}. Common endpoints include /invoice, /customer, /payment, and /bill. Rate limits apply: 500 requests per minute for production apps. Always implement exponential backoff for 429 responses. ## Stripe Payment Integration Stripe provides both client-side (Stripe.js) and server-side APIs. For PCI compliance, never pass raw card numbers through your server—use Stripe Elements or the Payment Intents API. Webhooks are essential for handling asynchronous events like payment succeeded or subscription renewed. Configure your webhook endpoint to verify signatures using the Stripe-Signature header. ## ShipStation Integration The ShipStation API is REST-based. Authentication uses API key and API secret in the Authorization header. Endpoints cover orders, shipments, carriers, and warehouses. Poll for new orders or use webhooks if available for your plan. Batch operations are supported for bulk label creation. ## Twilio SMS Integration Twilio's REST API requires Account SID and Auth Token. The Messaging API endpoint is /2010-04-01/Accounts/{AccountSid}/Messages.json. For two-way messaging, configure a webhook URL to receive incoming messages. Consider using a queue for high-volume outbound SMS to avoid rate limits. # PentaCodes Technical Reference and Integration Documentation # Version 1.0 | Last Updated March 2025 # This document contains technical reference material for common integrations and deployment procedures. ## QuickBooks Online Integration The QuickBooks Online API uses OAuth 2.0 for authentication. You will need to register your application in the Intuit Developer Portal to obtain client credentials. The base URL for the API is https://quickbooks.api.intuit.com/v3/company/{realmId}. Common endpoints include /invoice, /customer, /payment, and /bill. Rate limits apply: 500 requests per minute for production apps. Always implement exponential backoff for 429 responses. ## Stripe Payment Integration Stripe provides both client-side (Stripe.js) and server-side APIs. For PCI compliance, never pass raw card numbers through your server—use Stripe Elements or the Payment Intents API. Webhooks are essential for handling asynchronous events like payment succeeded or subscription renewed. Configure your webhook endpoint to verify signatures using the Stripe-Signature header. ## ShipStation Integration The ShipStation API is REST-based. Authentication uses API key and API secret in the Authorization header. Endpoints cover orders, shipments, carriers, and warehouses. Poll for new orders or use webhooks if available for your plan. Batch operations are supported for bulk label creation. ## Twilio SMS Integration Twilio's REST API requires Account SID and Auth Token. The Messaging API endpoint is /2010-04-01/Accounts/{AccountSid}/Messages.json. For two-way messaging, configure a webhook URL to receive incoming messages. Consider using a queue for high-volume outbound SMS to avoid rate limits. # PentaCodes Technical Reference and Integration Documentation # Version 1.0 | Last Updated March 2025 # This document contains technical reference material for common integrations and deployment procedures. ## QuickBooks Online Integration The QuickBooks Online API uses OAuth 2.0 for authentication. You will need to register your application in the Intuit Developer Portal to obtain client credentials. The base URL for the API is https://quickbooks.api.intuit.com/v3/company/{realmId}. Common endpoints include /invoice, /customer, /payment, and /bill. Rate limits apply: 500 requests per minute for production apps. Always implement exponential backoff for 429 responses. ## Stripe Payment Integration Stripe provides both client-side (Stripe.js) and server-side APIs. For PCI compliance, never pass raw card numbers through your server—use Stripe Elements or the Payment Intents API. Webhooks are essential for handling asynchronous events like payment succeeded or subscription renewed. Configure your webhook endpoint to verify signatures using the Stripe-Signature header. ## ShipStation Integration The ShipStation API is REST-based. Authentication uses API key and API secret in the Authorization header. Endpoints cover orders, shipments, carriers, and warehouses. Poll for new orders or use webhooks if available for your plan. Batch operations are supported for bulk label creation. ## Twilio SMS Integration Twilio's REST API requires Account SID and Auth Token. The Messaging API endpoint is /2010-04-01/Accounts/{AccountSid}/Messages.json. For two-way messaging, configure a webhook URL to receive incoming messages. Consider using a queue for high-volume outbound SMS to avoid rate limits. # PentaCodes Technical Reference and Integration Documentation # Version 1.0 | Last Updated March 2025 # This document contains technical reference material for common integrations and deployment procedures. ## QuickBooks Online Integration The QuickBooks Online API uses OAuth 2.0 for authentication. You will need to register your application in the Intuit Developer Portal to obtain client credentials. The base URL for the API is https://quickbooks.api.intuit.com/v3/company/{realmId}. Common endpoints include /invoice, /customer, /payment, and /bill. Rate limits apply: 500 requests per minute for production apps. Always implement exponential backoff for 429 responses. ## Stripe Payment Integration Stripe provides both client-side (Stripe.js) and server-side APIs. For PCI compliance, never pass raw card numbers through your server—use Stripe Elements or the Payment Intents API. Webhooks are essential for handling asynchronous events like payment succeeded or subscription renewed. Configure your webhook endpoint to verify signatures using the Stripe-Signature header. ## ShipStation Integration The ShipStation API is REST-based. Authentication uses API key and API secret in the Authorization header. Endpoints cover orders, shipments, carriers, and warehouses. Poll for new orders or use webhooks if available for your plan. Batch operations are supported for bulk label creation. ## Twilio SMS Integration Twilio's REST API requires Account SID and Auth Token. The Messaging API endpoint is /2010-04-01/Accounts/{AccountSid}/Messages.json. For two-way messaging, configure a webhook URL to receive incoming messages. Consider using a queue for high-volume outbound SMS to avoid rate limits. # PentaCodes Technical Reference and Integration Documentation # Version 1.0 | Last Updated March 2025 # This document contains technical reference material for common integrations and deployment procedures. ## QuickBooks Online Integration The QuickBooks Online API uses OAuth 2.0 for authentication. You will need to register your application in the Intuit Developer Portal to obtain client credentials. The base URL for the API is https://quickbooks.api.intuit.com/v3/company/{realmId}. Common endpoints include /invoice, /customer, /payment, and /bill. Rate limits apply: 500 requests per minute for production apps. Always implement exponential backoff for 429 responses. ## Stripe Payment Integration Stripe provides both client-side (Stripe.js) and server-side APIs. For PCI compliance, never pass raw card numbers through your server—use Stripe Elements or the Payment Intents API. Webhooks are essential for handling asynchronous events like payment succeeded or subscription renewed. Configure your webhook endpoint to verify signatures using the Stripe-Signature header. ## ShipStation Integration The ShipStation API is REST-based. Authentication uses API key and API secret in the Authorization header. Endpoints cover orders, shipments, carriers, and warehouses. Poll for new orders or use webhooks if available for your plan. Batch operations are supported for bulk label creation. ## Twilio SMS Integration Twilio's REST API requires Account SID and Auth Token. The Messaging API endpoint is /2010-04-01/Accounts/{AccountSid}/Messages.json. For two-way messaging, configure a webhook URL to receive incoming messages. Consider using a queue for high-volume outbound SMS to avoid rate limits. # PentaCodes Technical Reference and Integration Documentation # Version 1.0 | Last Updated March 2025 # This document contains technical reference material for common integrations and deployment procedures. ## QuickBooks Online Integration The QuickBooks Online API uses OAuth 2.0 for authentication. You will need to register your application in the Intuit Developer Portal to obtain client credentials. The base URL for the API is https://quickbooks.api.intuit.com/v3/company/{realmId}. Common endpoints include /invoice, /customer, /payment, and /bill. Rate limits apply: 500 requests per minute for production apps. Always implement exponential backoff for 429 responses. ## Stripe Payment Integration Stripe provides both client-side (Stripe.js) and server-side APIs. For PCI compliance, never pass raw card numbers through your server—use Stripe Elements or the Payment Intents API. Webhooks are essential for handling asynchronous events like payment succeeded or subscription renewed. Configure your webhook endpoint to verify signatures using the Stripe-Signature header. ## ShipStation Integration The ShipStation API is REST-based. Authentication uses API key and API secret in the Authorization header. Endpoints cover orders, shipments, carriers, and warehouses. Poll for new orders or use webhooks if available for your plan. Batch operations are supported for bulk label creation. ## Twilio SMS Integration Twilio's REST API requires Account SID and Auth Token. The Messaging API endpoint is /2010-04-01/Accounts/{AccountSid}/Messages.json. For two-way messaging, configure a webhook URL to receive incoming messages. Consider using a queue for high-volume outbound SMS to avoid rate limits. # PentaCodes Technical Reference and Integration Documentation # Version 1.0 | Last Updated March 2025 # This document contains technical reference material for common integrations and deployment procedures. ## QuickBooks Online Integration The QuickBooks Online API uses OAuth 2.0 for authentication. You will need to register your application in the Intuit Developer Portal to obtain client credentials. The base URL for the API is https://quickbooks.api.intuit.com/v3/company/{realmId}. Common endpoints include /invoice, /customer, /payment, and /bill. Rate limits apply: 500 requests per minute for production apps. Always implement exponential backoff for 429 responses. ## Stripe Payment Integration Stripe provides both client-side (Stripe.js) and server-side APIs. For PCI compliance, never pass raw card numbers through your server—use Stripe Elements or the Payment Intents API. Webhooks are essential for handling asynchronous events like payment succeeded or subscription renewed. Configure your webhook endpoint to verify signatures using the Stripe-Signature header. ## ShipStation Integration The ShipStation API is REST-based. Authentication uses API key and API secret in the Authorization header. Endpoints cover orders, shipments, carriers, and warehouses. Poll for new orders or use webhooks if available for your plan. Batch operations are supported for bulk label creation. ## Twilio SMS Integration Twilio's REST API requires Account SID and Auth Token. The Messaging API endpoint is /2010-04-01/Accounts/{AccountSid}/Messages.json. For two-way messaging, configure a webhook URL to receive incoming messages. Consider using a queue for high-volume outbound SMS to avoid rate limits. # PentaCodes Technical Reference and Integration Documentation # Version 1.0 | Last Updated March 2025 # This document contains technical reference material for common integrations and deployment procedures. ## QuickBooks Online Integration The QuickBooks Online API uses OAuth 2.0 for authentication. You will need to register your application in the Intuit Developer Portal to obtain client credentials. The base URL for the API is https://quickbooks.api.intuit.com/v3/company/{realmId}. Common endpoints include /invoice, /customer, /payment, and /bill. Rate limits apply: 500 requests per minute for production apps. Always implement exponential backoff for 429 responses. ## Stripe Payment Integration Stripe provides both client-side (Stripe.js) and server-side APIs. For PCI compliance, never pass raw card numbers through your server—use Stripe Elements or the Payment Intents API. Webhooks are essential for handling asynchronous events like payment succeeded or subscription renewed. Configure your webhook endpoint to verify signatures using the Stripe-Signature header. ## ShipStation Integration The ShipStation API is REST-based. Authentication uses API key and API secret in the Authorization header. Endpoints cover orders, shipments, carriers, and warehouses. Poll for new orders or use webhooks if available for your plan. Batch operations are supported for bulk label creation. ## Twilio SMS Integration Twilio's REST API requires Account SID and Auth Token. The Messaging API endpoint is /2010-04-01/Accounts/{AccountSid}/Messages.json. For two-way messaging, configure a webhook URL to receive incoming messages. Consider using a queue for high-volume outbound SMS to avoid rate limits. # PentaCodes Technical Reference and Integration Documentation # Version 1.0 | Last Updated March 2025 # This document contains technical reference material for common integrations and deployment procedures. ## QuickBooks Online Integration The QuickBooks Online API uses OAuth 2.0 for authentication. You will need to register your application in the Intuit Developer Portal to obtain client credentials. The base URL for the API is https://quickbooks.api.intuit.com/v3/company/{realmId}. Common endpoints include /invoice, /customer, /payment, and /bill. Rate limits apply: 500 requests per minute for production apps. Always implement exponential backoff for 429 responses. ## Stripe Payment Integration Stripe provides both client-side (Stripe.js) and server-side APIs. For PCI compliance, never pass raw card numbers through your server—use Stripe Elements or the Payment Intents API. Webhooks are essential for handling asynchronous events like payment succeeded or subscription renewed. Configure your webhook endpoint to verify signatures using the Stripe-Signature header. ## ShipStation Integration The ShipStation API is REST-based. Authentication uses API key and API secret in the Authorization header. Endpoints cover orders, shipments, carriers, and warehouses. Poll for new orders or use webhooks if available for your plan. Batch operations are supported for bulk label creation. ## Twilio SMS Integration Twilio's REST API requires Account SID and Auth Token. The Messaging API endpoint is /2010-04-01/Accounts/{AccountSid}/Messages.json. For two-way messaging, configure a webhook URL to receive incoming messages. Consider using a queue for high-volume outbound SMS to avoid rate limits. # PentaCodes Technical Reference and Integration Documentation # Version 1.0 | Last Updated March 2025 # This document contains technical reference material for common integrations and deployment procedures. ## QuickBooks Online Integration The QuickBooks Online API uses OAuth 2.0 for authentication. You will need to register your application in the Intuit Developer Portal to obtain client credentials. The base URL for the API is https://quickbooks.api.intuit.com/v3/company/{realmId}. Common endpoints include /invoice, /customer, /payment, and /bill. Rate limits apply: 500 requests per minute for production apps. Always implement exponential backoff for 429 responses. ## Stripe Payment Integration Stripe provides both client-side (Stripe.js) and server-side APIs. For PCI compliance, never pass raw card numbers through your server—use Stripe Elements or the Payment Intents API. Webhooks are essential for handling asynchronous events like payment succeeded or subscription renewed. Configure your webhook endpoint to verify signatures using the Stripe-Signature header. ## ShipStation Integration The ShipStation API is REST-based. Authentication uses API key and API secret in the Authorization header. Endpoints cover orders, shipments, carriers, and warehouses. Poll for new orders or use webhooks if available for your plan. Batch operations are supported for bulk label creation. ## Twilio SMS Integration Twilio's REST API requires Account SID and Auth Token. The Messaging API endpoint is /2010-04-01/Accounts/{AccountSid}/Messages.json. For two-way messaging, configure a webhook URL to receive incoming messages. Consider using a queue for high-volume outbound SMS to avoid rate limits. # PentaCodes Technical Reference and Integration Documentation # Version 1.0 | Last Updated March 2025 # This document contains technical reference material for common integrations and deployment procedures. ## QuickBooks Online Integration The QuickBooks Online API uses OAuth 2.0 for authentication. You will need to register your application in the Intuit Developer Portal to obtain client credentials. The base URL for the API is https://quickbooks.api.intuit.com/v3/company/{realmId}. Common endpoints include /invoice, /customer, /payment, and /bill. Rate limits apply: 500 requests per minute for production apps. Always implement exponential backoff for 429 responses. ## Stripe Payment Integration Stripe provides both client-side (Stripe.js) and server-side APIs. For PCI compliance, never pass raw card numbers through your server—use Stripe Elements or the Payment Intents API. Webhooks are essential for handling asynchronous events like payment succeeded or subscription renewed. Configure your webhook endpoint to verify signatures using the Stripe-Signature header. ## ShipStation Integration The ShipStation API is REST-based. Authentication uses API key and API secret in the Authorization header. Endpoints cover orders, shipments, carriers, and warehouses. Poll for new orders or use webhooks if available for your plan. Batch operations are supported for bulk label creation. ## Twilio SMS Integration Twilio's REST API requires Account SID and Auth Token. The Messaging API endpoint is /2010-04-01/Accounts/{AccountSid}/Messages.json. For two-way messaging, configure a webhook URL to receive incoming messages. Consider using a queue for high-volume outbound SMS to avoid rate limits. # PentaCodes Technical Reference and Integration Documentation # Version 1.0 | Last Updated March 2025 # This document contains technical reference material for common integrations and deployment procedures. ## QuickBooks Online Integration The QuickBooks Online API uses OAuth 2.0 for authentication. You will need to register your application in the Intuit Developer Portal to obtain client credentials. The base URL for the API is https://quickbooks.api.intuit.com/v3/company/{realmId}. Common endpoints include /invoice, /customer, /payment, and /bill. Rate limits apply: 500 requests per minute for production apps. Always implement exponential backoff for 429 responses. ## Stripe Payment Integration Stripe provides both client-side (Stripe.js) and server-side APIs. For PCI compliance, never pass raw card numbers through your server—use Stripe Elements or the Payment Intents API. Webhooks are essential for handling asynchronous events like payment succeeded or subscription renewed. Configure your webhook endpoint to verify signatures using the Stripe-Signature header. ## ShipStation Integration The ShipStation API is REST-based. Authentication uses API key and API secret in the Authorization header. Endpoints cover orders, shipments, carriers, and warehouses. Poll for new orders or use webhooks if available for your plan. Batch operations are supported for bulk label creation. ## Twilio SMS Integration Twilio's REST API requires Account SID and Auth Token. The Messaging API endpoint is /2010-04-01/Accounts/{AccountSid}/Messages.json. For two-way messaging, configure a webhook URL to receive incoming messages. Consider using a queue for high-volume outbound SMS to avoid rate limits. # PentaCodes Technical Reference and Integration Documentation # Version 1.0 | Last Updated March 2025 # This document contains technical reference material for common integrations and deployment procedures. ## QuickBooks Online Integration The QuickBooks Online API uses OAuth 2.0 for authentication. You will need to register your application in the Intuit Developer Portal to obtain client credentials. The base URL for the API is https://quickbooks.api.intuit.com/v3/company/{realmId}. Common endpoints include /invoice, /customer, /payment, and /bill. Rate limits apply: 500 requests per minute for production apps. Always implement exponential backoff for 429 responses. ## Stripe Payment Integration Stripe provides both client-side (Stripe.js) and server-side APIs. For PCI compliance, never pass raw card numbers through your server—use Stripe Elements or the Payment Intents API. Webhooks are essential for handling asynchronous events like payment succeeded or subscription renewed. Configure your webhook endpoint to verify signatures using the Stripe-Signature header. ## ShipStation Integration The ShipStation API is REST-based. Authentication uses API key and API secret in the Authorization header. Endpoints cover orders, shipments, carriers, and warehouses. Poll for new orders or use webhooks if available for your plan. Batch operations are supported for bulk label creation. ## Twilio SMS Integration Twilio's REST API requires Account SID and Auth Token. The Messaging API endpoint is /2010-04-01/Accounts/{AccountSid}/Messages.json. For two-way messaging, configure a webhook URL to receive incoming messages. Consider using a queue for high-volume outbound SMS to avoid rate limits. # PentaCodes Technical Reference and Integration Documentation # Version 1.0 | Last Updated March 2025 # This document contains technical reference material for common integrations and deployment procedures. ## QuickBooks Online Integration The QuickBooks Online API uses OAuth 2.0 for authentication. You will need to register your application in the Intuit Developer Portal to obtain client credentials. The base URL for the API is https://quickbooks.api.intuit.com/v3/company/{realmId}. Common endpoints include /invoice, /customer, /payment, and /bill. Rate limits apply: 500 requests per minute for production apps. Always implement exponential backoff for 429 responses. ## Stripe Payment Integration Stripe provides both client-side (Stripe.js) and server-side APIs. For PCI compliance, never pass raw card numbers through your server—use Stripe Elements or the Payment Intents API. Webhooks are essential for handling asynchronous events like payment succeeded or subscription renewed. Configure your webhook endpoint to verify signatures using the Stripe-Signature header. ## ShipStation Integration The ShipStation API is REST-based. Authentication uses API key and API secret in the Authorization header. Endpoints cover orders, shipments, carriers, and warehouses. Poll for new orders or use webhooks if available for your plan. Batch operations are supported for bulk label creation. ## Twilio SMS Integration Twilio's REST API requires Account SID and Auth Token. The Messaging API endpoint is /2010-04-01/Accounts/{AccountSid}/Messages.json. For two-way messaging, configure a webhook URL to receive incoming messages. Consider using a queue for high-volume outbound SMS to avoid rate limits. # PentaCodes Technical Reference and Integration Documentation # Version 1.0 | Last Updated March 2025 # This document contains technical reference material for common integrations and deployment procedures. ## QuickBooks Online Integration The QuickBooks Online API uses OAuth 2.0 for authentication. You will need to register your application in the Intuit Developer Portal to obtain client credentials. The base URL for the API is https://quickbooks.api.intuit.com/v3/company/{realmId}. Common endpoints include /invoice, /customer, /payment, and /bill. Rate limits apply: 500 requests per minute for production apps. Always implement exponential backoff for 429 responses. ## Stripe Payment Integration Stripe provides both client-side (Stripe.js) and server-side APIs. For PCI compliance, never pass raw card numbers through your server—use Stripe Elements or the Payment Intents API. Webhooks are essential for handling asynchronous events like payment succeeded or subscription renewed. Configure your webhook endpoint to verify signatures using the Stripe-Signature header. ## ShipStation Integration The ShipStation API is REST-based. Authentication uses API key and API secret in the Authorization header. Endpoints cover orders, shipments, carriers, and warehouses. Poll for new orders or use webhooks if available for your plan. Batch operations are supported for bulk label creation. ## Twilio SMS Integration Twilio's REST API requires Account SID and Auth Token. The Messaging API endpoint is /2010-04-01/Accounts/{AccountSid}/Messages.json. For two-way messaging, configure a webhook URL to receive incoming messages. Consider using a queue for high-volume outbound SMS to avoid rate limits. # PentaCodes Technical Reference and Integration Documentation # Version 1.0 | Last Updated March 2025 # This document contains technical reference material for common integrations and deployment procedures. ## QuickBooks Online Integration The QuickBooks Online API uses OAuth 2.0 for authentication. You will need to register your application in the Intuit Developer Portal to obtain client credentials. The base URL for the API is https://quickbooks.api.intuit.com/v3/company/{realmId}. Common endpoints include /invoice, /customer, /payment, and /bill. Rate limits apply: 500 requests per minute for production apps. Always implement exponential backoff for 429 responses. ## Stripe Payment Integration Stripe provides both client-side (Stripe.js) and server-side APIs. For PCI compliance, never pass raw card numbers through your server—use Stripe Elements or the Payment Intents API. Webhooks are essential for handling asynchronous events like payment succeeded or subscription renewed. Configure your webhook endpoint to verify signatures using the Stripe-Signature header. ## ShipStation Integration The ShipStation API is REST-based. Authentication uses API key and API secret in the Authorization header. Endpoints cover orders, shipments, carriers, and warehouses. Poll for new orders or use webhooks if available for your plan. Batch operations are supported for bulk label creation. ## Twilio SMS Integration Twilio's REST API requires Account SID and Auth Token. The Messaging API endpoint is /2010-04-01/Accounts/{AccountSid}/Messages.json. For two-way messaging, configure a webhook URL to receive incoming messages. Consider using a queue for high-volume outbound SMS to avoid rate limits. # PentaCodes Technical Reference and Integration Documentation # Version 1.0 | Last Updated March 2025 # This document contains technical reference material for common integrations and deployment procedures. ## QuickBooks Online Integration The QuickBooks Online API uses OAuth 2.0 for authentication. You will need to register your application in the Intuit Developer Portal to obtain client credentials. The base URL for the API is https://quickbooks.api.intuit.com/v3/company/{realmId}. Common endpoints include /invoice, /customer, /payment, and /bill. Rate limits apply: 500 requests per minute for production apps. Always implement exponential backoff for 429 responses. ## Stripe Payment Integration Stripe provides both client-side (Stripe.js) and server-side APIs. For PCI compliance, never pass raw card numbers through your server—use Stripe Elements or the Payment Intents API. Webhooks are essential for handling asynchronous events like payment succeeded or subscription renewed. Configure your webhook endpoint to verify signatures using the Stripe-Signature header. ## ShipStation Integration The ShipStation API is REST-based. Authentication uses API key and API secret in the Authorization header. Endpoints cover orders, shipments, carriers, and warehouses. Poll for new orders or use webhooks if available for your plan. Batch operations are supported for bulk label creation. ## Twilio SMS Integration Twilio's REST API requires Account SID and Auth Token. The Messaging API endpoint is /2010-04-01/Accounts/{AccountSid}/Messages.json. For two-way messaging, configure a webhook URL to receive incoming messages. Consider using a queue for high-volume outbound SMS to avoid rate limits. # PentaCodes Technical Reference and Integration Documentation # Version 1.0 | Last Updated March 2025 # This document contains technical reference material for common integrations and deployment procedures. ## QuickBooks Online Integration The QuickBooks Online API uses OAuth 2.0 for authentication. You will need to register your application in the Intuit Developer Portal to obtain client credentials. The base URL for the API is https://quickbooks.api.intuit.com/v3/company/{realmId}. Common endpoints include /invoice, /customer, /payment, and /bill. Rate limits apply: 500 requests per minute for production apps. Always implement exponential backoff for 429 responses. ## Stripe Payment Integration Stripe provides both client-side (Stripe.js) and server-side APIs. For PCI compliance, never pass raw card numbers through your server—use Stripe Elements or the Payment Intents API. Webhooks are essential for handling asynchronous events like payment succeeded or subscription renewed. Configure your webhook endpoint to verify signatures using the Stripe-Signature header. ## ShipStation Integration The ShipStation API is REST-based. Authentication uses API key and API secret in the Authorization header. Endpoints cover orders, shipments, carriers, and warehouses. Poll for new orders or use webhooks if available for your plan. Batch operations are supported for bulk label creation. ## Twilio SMS Integration Twilio's REST API requires Account SID and Auth Token. The Messaging API endpoint is /2010-04-01/Accounts/{AccountSid}/Messages.json. For two-way messaging, configure a webhook URL to receive incoming messages. Consider using a queue for high-volume outbound SMS to avoid rate limits. # PentaCodes Technical Reference and Integration Documentation # Version 1.0 | Last Updated March 2025 # This document contains technical reference material for common integrations and deployment procedures. ## QuickBooks Online Integration The QuickBooks Online API uses OAuth 2.0 for authentication. You will need to register your application in the Intuit Developer Portal to obtain client credentials. The base URL for the API is https://quickbooks.api.intuit.com/v3/company/{realmId}. Common endpoints include /invoice, /customer, /payment, and /bill. Rate limits apply: 500 requests per minute for production apps. Always implement exponential backoff for 429 responses. ## Stripe Payment Integration Stripe provides both client-side (Stripe.js) and server-side APIs. For PCI compliance, never pass raw card numbers through your server—use Stripe Elements or the Payment Intents API. Webhooks are essential for handling asynchronous events like payment succeeded or subscription renewed. Configure your webhook endpoint to verify signatures using the Stripe-Signature header. ## ShipStation Integration The ShipStation API is REST-based. Authentication uses API key and API secret in the Authorization header. Endpoints cover orders, shipments, carriers, and warehouses. Poll for new orders or use webhooks if available for your plan. Batch operations are supported for bulk label creation. ## Twilio SMS Integration Twilio's REST API requires Account SID and Auth Token. The Messaging API endpoint is /2010-04-01/Accounts/{AccountSid}/Messages.json. For two-way messaging, configure a webhook URL to receive incoming messages. Consider using a queue for high-volume outbound SMS to avoid rate limits. # PentaCodes Technical Reference and Integration Documentation # Version 1.0 | Last Updated March 2025 # This document contains technical reference material for common integrations and deployment procedures. ## QuickBooks Online Integration The QuickBooks Online API uses OAuth 2.0 for authentication. You will need to register your application in the Intuit Developer Portal to obtain client credentials. The base URL for the API is https://quickbooks.api.intuit.com/v3/company/{realmId}. Common endpoints include /invoice, /customer, /payment, and /bill. Rate limits apply: 500 requests per minute for production apps. Always implement exponential backoff for 429 responses. ## Stripe Payment Integration Stripe provides both client-side (Stripe.js) and server-side APIs. For PCI compliance, never pass raw card numbers through your server—use Stripe Elements or the Payment Intents API. Webhooks are essential for handling asynchronous events like payment succeeded or subscription renewed. Configure your webhook endpoint to verify signatures using the Stripe-Signature header. ## ShipStation Integration The ShipStation API is REST-based. Authentication uses API key and API secret in the Authorization header. Endpoints cover orders, shipments, carriers, and warehouses. Poll for new orders or use webhooks if available for your plan. Batch operations are supported for bulk label creation. ## Twilio SMS Integration Twilio's REST API requires Account SID and Auth Token. The Messaging API endpoint is /2010-04-01/Accounts/{AccountSid}/Messages.json. For two-way messaging, configure a webhook URL to receive incoming messages. Consider using a queue for high-volume outbound SMS to avoid rate limits. # PentaCodes Technical Reference and Integration Documentation # Version 1.0 | Last Updated March 2025 # This document contains technical reference material for common integrations and deployment procedures. ## QuickBooks Online Integration The QuickBooks Online API uses OAuth 2.0 for authentication. You will need to register your application in the Intuit Developer Portal to obtain client credentials. The base URL for the API is https://quickbooks.api.intuit.com/v3/company/{realmId}. Common endpoints include /invoice, /customer, /payment, and /bill. Rate limits apply: 500 requests per minute for production apps. Always implement exponential backoff for 429 responses. ## Stripe Payment Integration Stripe provides both client-side (Stripe.js) and server-side APIs. For PCI compliance, never pass raw card numbers through your server—use Stripe Elements or the Payment Intents API. Webhooks are essential for handling asynchronous events like payment succeeded or subscription renewed. Configure your webhook endpoint to verify signatures using the Stripe-Signature header. ## ShipStation Integration The ShipStation API is REST-based. Authentication uses API key and API secret in the Authorization header. Endpoints cover orders, shipments, carriers, and warehouses. Poll for new orders or use webhooks if available for your plan. Batch operations are supported for bulk label creation. ## Twilio SMS Integration Twilio's REST API requires Account SID and Auth Token. The Messaging API endpoint is /2010-04-01/Accounts/{AccountSid}/Messages.json. For two-way messaging, configure a webhook URL to receive incoming messages. Consider using a queue for high-volume outbound SMS to avoid rate limits. # PentaCodes Technical Reference and Integration Documentation # Version 1.0 | Last Updated March 2025 # This document contains technical reference material for common integrations and deployment procedures. ## QuickBooks Online Integration The QuickBooks Online API uses OAuth 2.0 for authentication. You will need to register your application in the Intuit Developer Portal to obtain client credentials. The base URL for the API is https://quickbooks.api.intuit.com/v3/company/{realmId}. Common endpoints include /invoice, /customer, /payment, and /bill. Rate limits apply: 500 requests per minute for production apps. Always implement exponential backoff for 429 responses. ## Stripe Payment Integration Stripe provides both client-side (Stripe.js) and server-side APIs. For PCI compliance, never pass raw card numbers through your server—use Stripe Elements or the Payment Intents API. Webhooks are essential for handling asynchronous events like payment succeeded or subscription renewed. Configure your webhook endpoint to verify signatures using the Stripe-Signature header. ## ShipStation Integration The ShipStation API is REST-based. Authentication uses API key and API secret in the Authorization header. Endpoints cover orders, shipments, carriers, and warehouses. Poll for new orders or use webhooks if available for your plan. Batch operations are supported for bulk label creation. ## Twilio SMS Integration Twilio's REST API requires Account SID and Auth Token. The Messaging API endpoint is /2010-04-01/Accounts/{AccountSid}/Messages.json. For two-way messaging, configure a webhook URL to receive incoming messages. Consider using a queue for high-volume outbound SMS to avoid rate limits. # PentaCodes Technical Reference and Integration Documentation # Version 1.0 | Last Updated March 2025 # This document contains technical reference material for common integrations and deployment procedures. ## QuickBooks Online Integration The QuickBooks Online API uses OAuth 2.0 for authentication. You will need to register your application in the Intuit Developer Portal to obtain client credentials. The base URL for the API is https://quickbooks.api.intuit.com/v3/company/{realmId}. Common endpoints include /invoice, /customer, /payment, and /bill. Rate limits apply: 500 requests per minute for production apps. Always implement exponential backoff for 429 responses. ## Stripe Payment Integration Stripe provides both client-side (Stripe.js) and server-side APIs. For PCI compliance, never pass raw card numbers through your server—use Stripe Elements or the Payment Intents API. Webhooks are essential for handling asynchronous events like payment succeeded or subscription renewed. Configure your webhook endpoint to verify signatures using the Stripe-Signature header. ## ShipStation Integration The ShipStation API is REST-based. Authentication uses API key and API secret in the Authorization header. Endpoints cover orders, shipments, carriers, and warehouses. Poll for new orders or use webhooks if available for your plan. Batch operations are supported for bulk label creation. ## Twilio SMS Integration Twilio's REST API requires Account SID and Auth Token. The Messaging API endpoint is /2010-04-01/Accounts/{AccountSid}/Messages.json. For two-way messaging, configure a webhook URL to receive incoming messages. Consider using a queue for high-volume outbound SMS to avoid rate limits. # PentaCodes Technical Reference and Integration Documentation # Version 1.0 | Last Updated March 2025 # This document contains technical reference material for common integrations and deployment procedures. ## QuickBooks Online Integration The QuickBooks Online API uses OAuth 2.0 for authentication. You will need to register your application in the Intuit Developer Portal to obtain client credentials. The base URL for the API is https://quickbooks.api.intuit.com/v3/company/{realmId}. Common endpoints include /invoice, /customer, /payment, and /bill. Rate limits apply: 500 requests per minute for production apps. Always implement exponential backoff for 429 responses. ## Stripe Payment Integration Stripe provides both client-side (Stripe.js) and server-side APIs. For PCI compliance, never pass raw card numbers through your server—use Stripe Elements or the Payment Intents API. Webhooks are essential for handling asynchronous events like payment succeeded or subscription renewed. Configure your webhook endpoint to verify signatures using the Stripe-Signature header. ## ShipStation Integration The ShipStation API is REST-based. Authentication uses API key and API secret in the Authorization header. Endpoints cover orders, shipments, carriers, and warehouses. Poll for new orders or use webhooks if available for your plan. Batch operations are supported for bulk label creation. ## Twilio SMS Integration Twilio's REST API requires Account SID and Auth Token. The Messaging API endpoint is /2010-04-01/Accounts/{AccountSid}/Messages.json. For two-way messaging, configure a webhook URL to receive incoming messages. Consider using a queue for high-volume outbound SMS to avoid rate limits. # PentaCodes Technical Reference and Integration Documentation # Version 1.0 | Last Updated March 2025 # This document contains technical reference material for common integrations and deployment procedures. ## QuickBooks Online Integration The QuickBooks Online API uses OAuth 2.0 for authentication. You will need to register your application in the Intuit Developer Portal to obtain client credentials. The base URL for the API is https://quickbooks.api.intuit.com/v3/company/{realmId}. Common endpoints include /invoice, /customer, /payment, and /bill. Rate limits apply: 500 requests per minute for production apps. Always implement exponential backoff for 429 responses. ## Stripe Payment Integration Stripe provides both client-side (Stripe.js) and server-side APIs. For PCI compliance, never pass raw card numbers through your server—use Stripe Elements or the Payment Intents API. Webhooks are essential for handling asynchronous events like payment succeeded or subscription renewed. Configure your webhook endpoint to verify signatures using the Stripe-Signature header. ## ShipStation Integration The ShipStation API is REST-based. Authentication uses API key and API secret in the Authorization header. Endpoints cover orders, shipments, carriers, and warehouses. Poll for new orders or use webhooks if available for your plan. Batch operations are supported for bulk label creation. ## Twilio SMS Integration Twilio's REST API requires Account SID and Auth Token. The Messaging API endpoint is /2010-04-01/Accounts/{AccountSid}/Messages.json. For two-way messaging, configure a webhook URL to receive incoming messages. Consider using a queue for high-volume outbound SMS to avoid rate limits. # PentaCodes Technical Reference and Integration Documentation # Version 1.0 | Last Updated March 2025 # This document contains technical reference material for common integrations and deployment procedures. ## QuickBooks Online Integration The QuickBooks Online API uses OAuth 2.0 for authentication. You will need to register your application in the Intuit Developer Portal to obtain client credentials. The base URL for the API is https://quickbooks.api.intuit.com/v3/company/{realmId}. Common endpoints include /invoice, /customer, /payment, and /bill. Rate limits apply: 500 requests per minute for production apps. Always implement exponential backoff for 429 responses. ## Stripe Payment Integration Stripe provides both client-side (Stripe.js) and server-side APIs. For PCI compliance, never pass raw card numbers through your server—use Stripe Elements or the Payment Intents API. Webhooks are essential for handling asynchronous events like payment succeeded or subscription renewed. Configure your webhook endpoint to verify signatures using the Stripe-Signature header. ## ShipStation Integration The ShipStation API is REST-based. Authentication uses API key and API secret in the Authorization header. Endpoints cover orders, shipments, carriers, and warehouses. Poll for new orders or use webhooks if available for your plan. Batch operations are supported for bulk label creation. ## Twilio SMS Integration Twilio's REST API requires Account SID and Auth Token. The Messaging API endpoint is /2010-04-01/Accounts/{AccountSid}/Messages.json. For two-way messaging, configure a webhook URL to receive incoming messages. Consider using a queue for high-volume outbound SMS to avoid rate limits. # PentaCodes Technical Reference and Integration Documentation # Version 1.0 | Last Updated March 2025 # This document contains technical reference material for common integrations and deployment procedures. ## QuickBooks Online Integration The QuickBooks Online API uses OAuth 2.0 for authentication. You will need to register your application in the Intuit Developer Portal to obtain client credentials. The base URL for the API is https://quickbooks.api.intuit.com/v3/company/{realmId}. Common endpoints include /invoice, /customer, /payment, and /bill. Rate limits apply: 500 requests per minute for production apps. Always implement exponential backoff for 429 responses. ## Stripe Payment Integration Stripe provides both client-side (Stripe.js) and server-side APIs. For PCI compliance, never pass raw card numbers through your server—use Stripe Elements or the Payment Intents API. Webhooks are essential for handling asynchronous events like payment succeeded or subscription renewed. Configure your webhook endpoint to verify signatures using the Stripe-Signature header. ## ShipStation Integration The ShipStation API is REST-based. Authentication uses API key and API secret in the Authorization header. Endpoints cover orders, shipments, carriers, and warehouses. Poll for new orders or use webhooks if available for your plan. Batch operations are supported for bulk label creation. ## Twilio SMS Integration Twilio's REST API requires Account SID and Auth Token. The Messaging API endpoint is /2010-04-01/Accounts/{AccountSid}/Messages.json. For two-way messaging, configure a webhook URL to receive incoming messages. Consider using a queue for high-volume outbound SMS to avoid rate limits. # PentaCodes Technical Reference and Integration Documentation # Version 1.0 | Last Updated March 2025 # This document contains technical reference material for common integrations and deployment procedures. ## QuickBooks Online Integration The QuickBooks Online API uses OAuth 2.0 for authentication. You will need to register your application in the Intuit Developer Portal to obtain client credentials. The base URL for the API is https://quickbooks.api.intuit.com/v3/company/{realmId}. Common endpoints include /invoice, /customer, /payment, and /bill. Rate limits apply: 500 requests per minute for production apps. Always implement exponential backoff for 429 responses. ## Stripe Payment Integration Stripe provides both client-side (Stripe.js) and server-side APIs. For PCI compliance, never pass raw card numbers through your server—use Stripe Elements or the Payment Intents API. Webhooks are essential for handling asynchronous events like payment succeeded or subscription renewed. Configure your webhook endpoint to verify signatures using the Stripe-Signature header. ## ShipStation Integration The ShipStation API is REST-based. Authentication uses API key and API secret in the Authorization header. Endpoints cover orders, shipments, carriers, and warehouses. Poll for new orders or use webhooks if available for your plan. Batch operations are supported for bulk label creation. ## Twilio SMS Integration Twilio's REST API requires Account SID and Auth Token. The Messaging API endpoint is /2010-04-01/Accounts/{AccountSid}/Messages.json. For two-way messaging, configure a webhook URL to receive incoming messages. Consider using a queue for high-volume outbound SMS to avoid rate limits. # PentaCodes Technical Reference and Integration Documentation # Version 1.0 | Last Updated March 2025 # This document contains technical reference material for common integrations and deployment procedures. ## QuickBooks Online Integration The QuickBooks Online API uses OAuth 2.0 for authentication. You will need to register your application in the Intuit Developer Portal to obtain client credentials. The base URL for the API is https://quickbooks.api.intuit.com/v3/company/{realmId}. Common endpoints include /invoice, /customer, /payment, and /bill. Rate limits apply: 500 requests per minute for production apps. Always implement exponential backoff for 429 responses. ## Stripe Payment Integration Stripe provides both client-side (Stripe.js) and server-side APIs. For PCI compliance, never pass raw card numbers through your server—use Stripe Elements or the Payment Intents API. Webhooks are essential for handling asynchronous events like payment succeeded or subscription renewed. Configure your webhook endpoint to verify signatures using the Stripe-Signature header. ## ShipStation Integration The ShipStation API is REST-based. Authentication uses API key and API secret in the Authorization header. Endpoints cover orders, shipments, carriers, and warehouses. Poll for new orders or use webhooks if available for your plan. Batch operations are supported for bulk label creation. ## Twilio SMS Integration Twilio's REST API requires Account SID and Auth Token. The Messaging API endpoint is /2010-04-01/Accounts/{AccountSid}/Messages.json. For two-way messaging, configure a webhook URL to receive incoming messages. Consider using a queue for high-volume outbound SMS to avoid rate limits. # PentaCodes Technical Reference and Integration Documentation # Version 1.0 | Last Updated March 2025 # This document contains technical reference material for common integrations and deployment procedures. ## QuickBooks Online Integration The QuickBooks Online API uses OAuth 2.0 for authentication. You will need to register your application in the Intuit Developer Portal to obtain client credentials. The base URL for the API is https://quickbooks.api.intuit.com/v3/company/{realmId}. Common endpoints include /invoice, /customer, /payment, and /bill. Rate limits apply: 500 requests per minute for production apps. Always implement exponential backoff for 429 responses. ## Stripe Payment Integration Stripe provides both client-side (Stripe.js) and server-side APIs. For PCI compliance, never pass raw card numbers through your server—use Stripe Elements or the Payment Intents API. Webhooks are essential for handling asynchronous events like payment succeeded or subscription renewed. Configure your webhook endpoint to verify signatures using the Stripe-Signature header. ## ShipStation Integration The ShipStation API is REST-based. Authentication uses API key and API secret in the Authorization header. Endpoints cover orders, shipments, carriers, and warehouses. Poll for new orders or use webhooks if available for your plan. Batch operations are supported for bulk label creation. ## Twilio SMS Integration Twilio's REST API requires Account SID and Auth Token. The Messaging API endpoint is /2010-04-01/Accounts/{AccountSid}/Messages.json. For two-way messaging, configure a webhook URL to receive incoming messages. Consider using a queue for high-volume outbound SMS to avoid rate limits. # PentaCodes Technical Reference and Integration Documentation # Version 1.0 | Last Updated March 2025 # This document contains technical reference material for common integrations and deployment procedures. ## QuickBooks Online Integration The QuickBooks Online API uses OAuth 2.0 for authentication. You will need to register your application in the Intuit Developer Portal to obtain client credentials. The base URL for the API is https://quickbooks.api.intuit.com/v3/company/{realmId}. Common endpoints include /invoice, /customer, /payment, and /bill. Rate limits apply: 500 requests per minute for production apps. Always implement exponential backoff for 429 responses. ## Stripe Payment Integration Stripe provides both client-side (Stripe.js) and server-side APIs. For PCI compliance, never pass raw card numbers through your server—use Stripe Elements or the Payment Intents API. Webhooks are essential for handling asynchronous events like payment succeeded or subscription renewed. Configure your webhook endpoint to verify signatures using the Stripe-Signature header. ## ShipStation Integration The ShipStation API is REST-based. Authentication uses API key and API secret in the Authorization header. Endpoints cover orders, shipments, carriers, and warehouses. Poll for new orders or use webhooks if available for your plan. Batch operations are supported for bulk label creation. ## Twilio SMS Integration Twilio's REST API requires Account SID and Auth Token. The Messaging API endpoint is /2010-04-01/Accounts/{AccountSid}/Messages.json. For two-way messaging, configure a webhook URL to receive incoming messages. Consider using a queue for high-volume outbound SMS to avoid rate limits. # PentaCodes Technical Reference and Integration Documentation # Version 1.0 | Last Updated March 2025 # This document contains technical reference material for common integrations and deployment procedures. ## QuickBooks Online Integration The QuickBooks Online API uses OAuth 2.0 for authentication. You will need to register your application in the Intuit Developer Portal to obtain client credentials. The base URL for the API is https://quickbooks.api.intuit.com/v3/company/{realmId}. Common endpoints include /invoice, /customer, /payment, and /bill. Rate limits apply: 500 requests per minute for production apps. Always implement exponential backoff for 429 responses. ## Stripe Payment Integration Stripe provides both client-side (Stripe.js) and server-side APIs. For PCI compliance, never pass raw card numbers through your server—use Stripe Elements or the Payment Intents API. Webhooks are essential for handling asynchronous events like payment succeeded or subscription renewed. Configure your webhook endpoint to verify signatures using the Stripe-Signature header. ## ShipStation Integration The ShipStation API is REST-based. Authentication uses API key and API secret in the Authorization header. Endpoints cover orders, shipments, carriers, and warehouses. Poll for new orders or use webhooks if available for your plan. Batch operations are supported for bulk label creation. ## Twilio SMS Integration Twilio's REST API requires Account SID and Auth Token. The Messaging API endpoint is /2010-04-01/Accounts/{AccountSid}/Messages.json. For two-way messaging, configure a webhook URL to receive incoming messages. Consider using a queue for high-volume outbound SMS to avoid rate limits. # PentaCodes Technical Reference and Integration Documentation # Version 1.0 | Last Updated March 2025 # This document contains technical reference material for common integrations and deployment procedures. ## QuickBooks Online Integration The QuickBooks Online API uses OAuth 2.0 for authentication. You will need to register your application in the Intuit Developer Portal to obtain client credentials. The base URL for the API is https://quickbooks.api.intuit.com/v3/company/{realmId}. Common endpoints include /invoice, /customer, /payment, and /bill. Rate limits apply: 500 requests per minute for production apps. Always implement exponential backoff for 429 responses. ## Stripe Payment Integration Stripe provides both client-side (Stripe.js) and server-side APIs. For PCI compliance, never pass raw card numbers through your server—use Stripe Elements or the Payment Intents API. Webhooks are essential for handling asynchronous events like payment succeeded or subscription renewed. Configure your webhook endpoint to verify signatures using the Stripe-Signature header. ## ShipStation Integration The ShipStation API is REST-based. Authentication uses API key and API secret in the Authorization header. Endpoints cover orders, shipments, carriers, and warehouses. Poll for new orders or use webhooks if available for your plan. Batch operations are supported for bulk label creation. ## Twilio SMS Integration Twilio's REST API requires Account SID and Auth Token. The Messaging API endpoint is /2010-04-01/Accounts/{AccountSid}/Messages.json. For two-way messaging, configure a webhook URL to receive incoming messages. Consider using a queue for high-volume outbound SMS to avoid rate limits. # PentaCodes Technical Reference and Integration Documentation # Version 1.0 | Last Updated March 2025 # This document contains technical reference material for common integrations and deployment procedures. ## QuickBooks Online Integration The QuickBooks Online API uses OAuth 2.0 for authentication. You will need to register your application in the Intuit Developer Portal to obtain client credentials. The base URL for the API is https://quickbooks.api.intuit.com/v3/company/{realmId}. Common endpoints include /invoice, /customer, /payment, and /bill. Rate limits apply: 500 requests per minute for production apps. Always implement exponential backoff for 429 responses. ## Stripe Payment Integration Stripe provides both client-side (Stripe.js) and server-side APIs. For PCI compliance, never pass raw card numbers through your server—use Stripe Elements or the Payment Intents API. Webhooks are essential for handling asynchronous events like payment succeeded or subscription renewed. Configure your webhook endpoint to verify signatures using the Stripe-Signature header. ## ShipStation Integration The ShipStation API is REST-based. Authentication uses API key and API secret in the Authorization header. Endpoints cover orders, shipments, carriers, and warehouses. Poll for new orders or use webhooks if available for your plan. Batch operations are supported for bulk label creation. ## Twilio SMS Integration Twilio's REST API requires Account SID and Auth Token. The Messaging API endpoint is /2010-04-01/Accounts/{AccountSid}/Messages.json. For two-way messaging, configure a webhook URL to receive incoming messages. Consider using a queue for high-volume outbound SMS to avoid rate limits. # PentaCodes Technical Reference and Integration Documentation # Version 1.0 | Last Updated March 2025 # This document contains technical reference material for common integrations and deployment procedures. ## QuickBooks Online Integration The QuickBooks Online API uses OAuth 2.0 for authentication. You will need to register your application in the Intuit Developer Portal to obtain client credentials. The base URL for the API is https://quickbooks.api.intuit.com/v3/company/{realmId}. Common endpoints include /invoice, /customer, /payment, and /bill. Rate limits apply: 500 requests per minute for production apps. Always implement exponential backoff for 429 responses. ## Stripe Payment Integration Stripe provides both client-side (Stripe.js) and server-side APIs. For PCI compliance, never pass raw card numbers through your server—use Stripe Elements or the Payment Intents API. Webhooks are essential for handling asynchronous events like payment succeeded or subscription renewed. Configure your webhook endpoint to verify signatures using the Stripe-Signature header. ## ShipStation Integration The ShipStation API is REST-based. Authentication uses API key and API secret in the Authorization header. Endpoints cover orders, shipments, carriers, and warehouses. Poll for new orders or use webhooks if available for your plan. Batch operations are supported for bulk label creation. ## Twilio SMS Integration Twilio's REST API requires Account SID and Auth Token. The Messaging API endpoint is /2010-04-01/Accounts/{AccountSid}/Messages.json. For two-way messaging, configure a webhook URL to receive incoming messages. Consider using a queue for high-volume outbound SMS to avoid rate limits. # PentaCodes Technical Reference and Integration Documentation # Version 1.0 | Last Updated March 2025 # This document contains technical reference material for common integrations and deployment procedures. ## QuickBooks Online Integration The QuickBooks Online API uses OAuth 2.0 for authentication. You will need to register your application in the Intuit Developer Portal to obtain client credentials. The base URL for the API is https://quickbooks.api.intuit.com/v3/company/{realmId}. Common endpoints include /invoice, /customer, /payment, and /bill. Rate limits apply: 500 requests per minute for production apps. Always implement exponential backoff for 429 responses. ## Stripe Payment Integration Stripe provides both client-side (Stripe.js) and server-side APIs. For PCI compliance, never pass raw card numbers through your server—use Stripe Elements or the Payment Intents API. Webhooks are essential for handling asynchronous events like payment succeeded or subscription renewed. Configure your webhook endpoint to verify signatures using the Stripe-Signature header. ## ShipStation Integration The ShipStation API is REST-based. Authentication uses API key and API secret in the Authorization header. Endpoints cover orders, shipments, carriers, and warehouses. Poll for new orders or use webhooks if available for your plan. Batch operations are supported for bulk label creation. ## Twilio SMS Integration Twilio's REST API requires Account SID and Auth Token. The Messaging API endpoint is /2010-04-01/Accounts/{AccountSid}/Messages.json. For two-way messaging, configure a webhook URL to receive incoming messages. Consider using a queue for high-volume outbound SMS to avoid rate limits. # PentaCodes Technical Reference and Integration Documentation # Version 1.0 | Last Updated March 2025 # This document contains technical reference material for common integrations and deployment procedures. ## QuickBooks Online Integration The QuickBooks Online API uses OAuth 2.0 for authentication. You will need to register your application in the Intuit Developer Portal to obtain client credentials. The base URL for the API is https://quickbooks.api.intuit.com/v3/company/{realmId}. Common endpoints include /invoice, /customer, /payment, and /bill. Rate limits apply: 500 requests per minute for production apps. Always implement exponential backoff for 429 responses. ## Stripe Payment Integration Stripe provides both client-side (Stripe.js) and server-side APIs. For PCI compliance, never pass raw card numbers through your server—use Stripe Elements or the Payment Intents API. Webhooks are essential for handling asynchronous events like payment succeeded or subscription renewed. Configure your webhook endpoint to verify signatures using the Stripe-Signature header. ## ShipStation Integration The ShipStation API is REST-based. Authentication uses API key and API secret in the Authorization header. Endpoints cover orders, shipments, carriers, and warehouses. Poll for new orders or use webhooks if available for your plan. Batch operations are supported for bulk label creation. ## Twilio SMS Integration Twilio's REST API requires Account SID and Auth Token. The Messaging API endpoint is /2010-04-01/Accounts/{AccountSid}/Messages.json. For two-way messaging, configure a webhook URL to receive incoming messages. Consider using a queue for high-volume outbound SMS to avoid rate limits. # PentaCodes Technical Reference and Integration Documentation # Version 1.0 | Last Updated March 2025 # This document contains technical reference material for common integrations and deployment procedures. ## QuickBooks Online Integration The QuickBooks Online API uses OAuth 2.0 for authentication. You will need to register your application in the Intuit Developer Portal to obtain client credentials. The base URL for the API is https://quickbooks.api.intuit.com/v3/company/{realmId}. Common endpoints include /invoice, /customer, /payment, and /bill. Rate limits apply: 500 requests per minute for production apps. Always implement exponential backoff for 429 responses. ## Stripe Payment Integration Stripe provides both client-side (Stripe.js) and server-side APIs. For PCI compliance, never pass raw card numbers through your server—use Stripe Elements or the Payment Intents API. Webhooks are essential for handling asynchronous events like payment succeeded or subscription renewed. Configure your webhook endpoint to verify signatures using the Stripe-Signature header. ## ShipStation Integration The ShipStation API is REST-based. Authentication uses API key and API secret in the Authorization header. Endpoints cover orders, shipments, carriers, and warehouses. Poll for new orders or use webhooks if available for your plan. Batch operations are supported for bulk label creation. ## Twilio SMS Integration Twilio's REST API requires Account SID and Auth Token. The Messaging API endpoint is /2010-04-01/Accounts/{AccountSid}/Messages.json. For two-way messaging, configure a webhook URL to receive incoming messages. Consider using a queue for high-volume outbound SMS to avoid rate limits. # PentaCodes Technical Reference and Integration Documentation # Version 1.0 | Last Updated March 2025 # This document contains technical reference material for common integrations and deployment procedures. ## QuickBooks Online Integration The QuickBooks Online API uses OAuth 2.0 for authentication. You will need to register your application in the Intuit Developer Portal to obtain client credentials. The base URL for the API is https://quickbooks.api.intuit.com/v3/company/{realmId}. Common endpoints include /invoice, /customer, /payment, and /bill. Rate limits apply: 500 requests per minute for production apps. Always implement exponential backoff for 429 responses. ## Stripe Payment Integration Stripe provides both client-side (Stripe.js) and server-side APIs. For PCI compliance, never pass raw card numbers through your server—use Stripe Elements or the Payment Intents API. Webhooks are essential for handling asynchronous events like payment succeeded or subscription renewed. Configure your webhook endpoint to verify signatures using the Stripe-Signature header. ## ShipStation Integration The ShipStation API is REST-based. Authentication uses API key and API secret in the Authorization header. Endpoints cover orders, shipments, carriers, and warehouses. Poll for new orders or use webhooks if available for your plan. Batch operations are supported for bulk label creation. ## Twilio SMS Integration Twilio's REST API requires Account SID and Auth Token. The Messaging API endpoint is /2010-04-01/Accounts/{AccountSid}/Messages.json. For two-way messaging, configure a webhook URL to receive incoming messages. Consider using a queue for high-volume outbound SMS to avoid rate limits. # PentaCodes Technical Reference and Integration Documentation # Version 1.0 | Last Updated March 2025 # This document contains technical reference material for common integrations and deployment procedures. ## QuickBooks Online Integration The QuickBooks Online API uses OAuth 2.0 for authentication. You will need to register your application in the Intuit Developer Portal to obtain client credentials. The base URL for the API is https://quickbooks.api.intuit.com/v3/company/{realmId}. Common endpoints include /invoice, /customer, /payment, and /bill. Rate limits apply: 500 requests per minute for production apps. Always implement exponential backoff for 429 responses. ## Stripe Payment Integration Stripe provides both client-side (Stripe.js) and server-side APIs. For PCI compliance, never pass raw card numbers through your server—use Stripe Elements or the Payment Intents API. Webhooks are essential for handling asynchronous events like payment succeeded or subscription renewed. Configure your webhook endpoint to verify signatures using the Stripe-Signature header. ## ShipStation Integration The ShipStation API is REST-based. Authentication uses API key and API secret in the Authorization header. Endpoints cover orders, shipments, carriers, and warehouses. Poll for new orders or use webhooks if available for your plan. Batch operations are supported for bulk label creation. ## Twilio SMS Integration Twilio's REST API requires Account SID and Auth Token. The Messaging API endpoint is /2010-04-01/Accounts/{AccountSid}/Messages.json. For two-way messaging, configure a webhook URL to receive incoming messages. Consider using a queue for high-volume outbound SMS to avoid rate limits. # PentaCodes Technical Reference and Integration Documentation # Version 1.0 | Last Updated March 2025 # This document contains technical reference material for common integrations and deployment procedures. ## QuickBooks Online Integration The QuickBooks Online API uses OAuth 2.0 for authentication. You will need to register your application in the Intuit Developer Portal to obtain client credentials. The base URL for the API is https://quickbooks.api.intuit.com/v3/company/{realmId}. Common endpoints include /invoice, /customer, /payment, and /bill. Rate limits apply: 500 requests per minute for production apps. Always implement exponential backoff for 429 responses. ## Stripe Payment Integration Stripe provides both client-side (Stripe.js) and server-side APIs. For PCI compliance, never pass raw card numbers through your server—use Stripe Elements or the Payment Intents API. Webhooks are essential for handling asynchronous events like payment succeeded or subscription renewed. Configure your webhook endpoint to verify signatures using the Stripe-Signature header. ## ShipStation Integration The ShipStation API is REST-based. Authentication uses API key and API secret in the Authorization header. Endpoints cover orders, shipments, carriers, and warehouses. Poll for new orders or use webhooks if available for your plan. Batch operations are supported for bulk label creation. ## Twilio SMS Integration Twilio's REST API requires Account SID and Auth Token. The Messaging API endpoint is /2010-04-01/Accounts/{AccountSid}/Messages.json. For two-way messaging, configure a webhook URL to receive incoming messages. Consider using a queue for high-volume outbound SMS to avoid rate limits. # PentaCodes Technical Reference and Integration Documentation # Version 1.0 | Last Updated March 2025 # This document contains technical reference material for common integrations and deployment procedures. ## QuickBooks Online Integration The QuickBooks Online API uses OAuth 2.0 for authentication. You will need to register your application in the Intuit Developer Portal to obtain client credentials. The base URL for the API is https://quickbooks.api.intuit.com/v3/company/{realmId}. Common endpoints include /invoice, /customer, /payment, and /bill. Rate limits apply: 500 requests per minute for production apps. Always implement exponential backoff for 429 responses. ## Stripe Payment Integration Stripe provides both client-side (Stripe.js) and server-side APIs. For PCI compliance, never pass raw card numbers through your server—use Stripe Elements or the Payment Intents API. Webhooks are essential for handling asynchronous events like payment succeeded or subscription renewed. Configure your webhook endpoint to verify signatures using the Stripe-Signature header. ## ShipStation Integration The ShipStation API is REST-based. Authentication uses API key and API secret in the Authorization header. Endpoints cover orders, shipments, carriers, and warehouses. Poll for new orders or use webhooks if available for your plan. Batch operations are supported for bulk label creation. ## Twilio SMS Integration Twilio's REST API requires Account SID and Auth Token. The Messaging API endpoint is /2010-04-01/Accounts/{AccountSid}/Messages.json. For two-way messaging, configure a webhook URL to receive incoming messages. Consider using a queue for high-volume outbound SMS to avoid rate limits. # PentaCodes Technical Reference and Integration Documentation # Version 1.0 | Last Updated March 2025 # This document contains technical reference material for common integrations and deployment procedures. ## QuickBooks Online Integration The QuickBooks Online API uses OAuth 2.0 for authentication. You will need to register your application in the Intuit Developer Portal to obtain client credentials. The base URL for the API is https://quickbooks.api.intuit.com/v3/company/{realmId}. Common endpoints include /invoice, /customer, /payment, and /bill. Rate limits apply: 500 requests per minute for production apps. Always implement exponential backoff for 429 responses. ## Stripe Payment Integration Stripe provides both client-side (Stripe.js) and server-side APIs. For PCI compliance, never pass raw card numbers through your server—use Stripe Elements or the Payment Intents API. Webhooks are essential for handling asynchronous events like payment succeeded or subscription renewed. Configure your webhook endpoint to verify signatures using the Stripe-Signature header. ## ShipStation Integration The ShipStation API is REST-based. Authentication uses API key and API secret in the Authorization header. Endpoints cover orders, shipments, carriers, and warehouses. Poll for new orders or use webhooks if available for your plan. Batch operations are supported for bulk label creation. ## Twilio SMS Integration Twilio's REST API requires Account SID and Auth Token. The Messaging API endpoint is /2010-04-01/Accounts/{AccountSid}/Messages.json. For two-way messaging, configure a webhook URL to receive incoming messages. Consider using a queue for high-volume outbound SMS to avoid rate limits. # PentaCodes Technical Reference and Integration Documentation # Version 1.0 | Last Updated March 2025 # This document contains technical reference material for common integrations and deployment procedures. ## QuickBooks Online Integration The QuickBooks Online API uses OAuth 2.0 for authentication. You will need to register your application in the Intuit Developer Portal to obtain client credentials. The base URL for the API is https://quickbooks.api.intuit.com/v3/company/{realmId}. Common endpoints include /invoice, /customer, /payment, and /bill. Rate limits apply: 500 requests per minute for production apps. Always implement exponential backoff for 429 responses. ## Stripe Payment Integration Stripe provides both client-side (Stripe.js) and server-side APIs. For PCI compliance, never pass raw card numbers through your server—use Stripe Elements or the Payment Intents API. Webhooks are essential for handling asynchronous events like payment succeeded or subscription renewed. Configure your webhook endpoint to verify signatures using the Stripe-Signature header. ## ShipStation Integration The ShipStation API is REST-based. Authentication uses API key and API secret in the Authorization header. Endpoints cover orders, shipments, carriers, and warehouses. Poll for new orders or use webhooks if available for your plan. Batch operations are supported for bulk label creation. ## Twilio SMS Integration Twilio's REST API requires Account SID and Auth Token. The Messaging API endpoint is /2010-04-01/Accounts/{AccountSid}/Messages.json. For two-way messaging, configure a webhook URL to receive incoming messages. Consider using a queue for high-volume outbound SMS to avoid rate limits. # PentaCodes Technical Reference and Integration Documentation # Version 1.0 | Last Updated March 2025 # This document contains technical reference material for common integrations and deployment procedures. ## QuickBooks Online Integration The QuickBooks Online API uses OAuth 2.0 for authentication. You will need to register your application in the Intuit Developer Portal to obtain client credentials. The base URL for the API is https://quickbooks.api.intuit.com/v3/company/{realmId}. Common endpoints include /invoice, /customer, /payment, and /bill. Rate limits apply: 500 requests per minute for production apps. Always implement exponential backoff for 429 responses. ## Stripe Payment Integration Stripe provides both client-side (Stripe.js) and server-side APIs. For PCI compliance, never pass raw card numbers through your server—use Stripe Elements or the Payment Intents API. Webhooks are essential for handling asynchronous events like payment succeeded or subscription renewed. Configure your webhook endpoint to verify signatures using the Stripe-Signature header. ## ShipStation Integration The ShipStation API is REST-based. Authentication uses API key and API secret in the Authorization header. Endpoints cover orders, shipments, carriers, and warehouses. Poll for new orders or use webhooks if available for your plan. Batch operations are supported for bulk label creation. ## Twilio SMS Integration Twilio's REST API requires Account SID and Auth Token. The Messaging API endpoint is /2010-04-01/Accounts/{AccountSid}/Messages.json. For two-way messaging, configure a webhook URL to receive incoming messages. Consider using a queue for high-volume outbound SMS to avoid rate limits. # PentaCodes Technical Reference and Integration Documentation # Version 1.0 | Last Updated March 2025 # This document contains technical reference material for common integrations and deployment procedures. ## QuickBooks Online Integration The QuickBooks Online API uses OAuth 2.0 for authentication. You will need to register your application in the Intuit Developer Portal to obtain client credentials. The base URL for the API is https://quickbooks.api.intuit.com/v3/company/{realmId}. Common endpoints include /invoice, /customer, /payment, and /bill. Rate limits apply: 500 requests per minute for production apps. Always implement exponential backoff for 429 responses. ## Stripe Payment Integration Stripe provides both client-side (Stripe.js) and server-side APIs. For PCI compliance, never pass raw card numbers through your server—use Stripe Elements or the Payment Intents API. Webhooks are essential for handling asynchronous events like payment succeeded or subscription renewed. Configure your webhook endpoint to verify signatures using the Stripe-Signature header. ## ShipStation Integration The ShipStation API is REST-based. Authentication uses API key and API secret in the Authorization header. Endpoints cover orders, shipments, carriers, and warehouses. Poll for new orders or use webhooks if available for your plan. Batch operations are supported for bulk label creation. ## Twilio SMS Integration Twilio's REST API requires Account SID and Auth Token. The Messaging API endpoint is /2010-04-01/Accounts/{AccountSid}/Messages.json. For two-way messaging, configure a webhook URL to receive incoming messages. Consider using a queue for high-volume outbound SMS to avoid rate limits. # PentaCodes Technical Reference and Integration Documentation # Version 1.0 | Last Updated March 2025 # This document contains technical reference material for common integrations and deployment procedures. ## QuickBooks Online Integration The QuickBooks Online API uses OAuth 2.0 for authentication. You will need to register your application in the Intuit Developer Portal to obtain client credentials. The base URL for the API is https://quickbooks.api.intuit.com/v3/company/{realmId}. Common endpoints include /invoice, /customer, /payment, and /bill. Rate limits apply: 500 requests per minute for production apps. Always implement exponential backoff for 429 responses. ## Stripe Payment Integration Stripe provides both client-side (Stripe.js) and server-side APIs. For PCI compliance, never pass raw card numbers through your server—use Stripe Elements or the Payment Intents API. Webhooks are essential for handling asynchronous events like payment succeeded or subscription renewed. Configure your webhook endpoint to verify signatures using the Stripe-Signature header. ## ShipStation Integration The ShipStation API is REST-based. Authentication uses API key and API secret in the Authorization header. Endpoints cover orders, shipments, carriers, and warehouses. Poll for new orders or use webhooks if available for your plan. Batch operations are supported for bulk label creation. ## Twilio SMS Integration Twilio's REST API requires Account SID and Auth Token. The Messaging API endpoint is /2010-04-01/Accounts/{AccountSid}/Messages.json. For two-way messaging, configure a webhook URL to receive incoming messages. Consider using a queue for high-volume outbound SMS to avoid rate limits. # PentaCodes Technical Reference and Integration Documentation # Version 1.0 | Last Updated March 2025 # This document contains technical reference material for common integrations and deployment procedures. ## QuickBooks Online Integration The QuickBooks Online API uses OAuth 2.0 for authentication. You will need to register your application in the Intuit Developer Portal to obtain client credentials. The base URL for the API is https://quickbooks.api.intuit.com/v3/company/{realmId}. Common endpoints include /invoice, /customer, /payment, and /bill. Rate limits apply: 500 requests per minute for production apps. Always implement exponential backoff for 429 responses. ## Stripe Payment Integration Stripe provides both client-side (Stripe.js) and server-side APIs. For PCI compliance, never pass raw card numbers through your server—use Stripe Elements or the Payment Intents API. Webhooks are essential for handling asynchronous events like payment succeeded or subscription renewed. Configure your webhook endpoint to verify signatures using the Stripe-Signature header. ## ShipStation Integration The ShipStation API is REST-based. Authentication uses API key and API secret in the Authorization header. Endpoints cover orders, shipments, carriers, and warehouses. Poll for new orders or use webhooks if available for your plan. Batch operations are supported for bulk label creation. ## Twilio SMS Integration Twilio's REST API requires Account SID and Auth Token. The Messaging API endpoint is /2010-04-01/Accounts/{AccountSid}/Messages.json. For two-way messaging, configure a webhook URL to receive incoming messages. Consider using a queue for high-volume outbound SMS to avoid rate limits. # PentaCodes Technical Reference and Integration Documentation # Version 1.0 | Last Updated March 2025 # This document contains technical reference material for common integrations and deployment procedures. ## QuickBooks Online Integration The QuickBooks Online API uses OAuth 2.0 for authentication. You will need to register your application in the Intuit Developer Portal to obtain client credentials. The base URL for the API is https://quickbooks.api.intuit.com/v3/company/{realmId}. Common endpoints include /invoice, /customer, /payment, and /bill. Rate limits apply: 500 requests per minute for production apps. Always implement exponential backoff for 429 responses. ## Stripe Payment Integration Stripe provides both client-side (Stripe.js) and server-side APIs. For PCI compliance, never pass raw card numbers through your server—use Stripe Elements or the Payment Intents API. Webhooks are essential for handling asynchronous events like payment succeeded or subscription renewed. Configure your webhook endpoint to verify signatures using the Stripe-Signature header. ## ShipStation Integration The ShipStation API is REST-based. Authentication uses API key and API secret in the Authorization header. Endpoints cover orders, shipments, carriers, and warehouses. Poll for new orders or use webhooks if available for your plan. Batch operations are supported for bulk label creation. ## Twilio SMS Integration Twilio's REST API requires Account SID and Auth Token. The Messaging API endpoint is /2010-04-01/Accounts/{AccountSid}/Messages.json. For two-way messaging, configure a webhook URL to receive incoming messages. Consider using a queue for high-volume outbound SMS to avoid rate limits. # PentaCodes Technical Reference and Integration Documentation # Version 1.0 | Last Updated March 2025 # This document contains technical reference material for common integrations and deployment procedures. ## QuickBooks Online Integration The QuickBooks Online API uses OAuth 2.0 for authentication. You will need to register your application in the Intuit Developer Portal to obtain client credentials. The base URL for the API is https://quickbooks.api.intuit.com/v3/company/{realmId}. Common endpoints include /invoice, /customer, /payment, and /bill. Rate limits apply: 500 requests per minute for production apps. Always implement exponential backoff for 429 responses. ## Stripe Payment Integration Stripe provides both client-side (Stripe.js) and server-side APIs. For PCI compliance, never pass raw card numbers through your server—use Stripe Elements or the Payment Intents API. Webhooks are essential for handling asynchronous events like payment succeeded or subscription renewed. Configure your webhook endpoint to verify signatures using the Stripe-Signature header. ## ShipStation Integration The ShipStation API is REST-based. Authentication uses API key and API secret in the Authorization header. Endpoints cover orders, shipments, carriers, and warehouses. Poll for new orders or use webhooks if available for your plan. Batch operations are supported for bulk label creation. ## Twilio SMS Integration Twilio's REST API requires Account SID and Auth Token. The Messaging API endpoint is /2010-04-01/Accounts/{AccountSid}/Messages.json. For two-way messaging, configure a webhook URL to receive incoming messages. Consider using a queue for high-volume outbound SMS to avoid rate limits. # PentaCodes Technical Reference and Integration Documentation # Version 1.0 | Last Updated March 2025 # This document contains technical reference material for common integrations and deployment procedures. ## QuickBooks Online Integration The QuickBooks Online API uses OAuth 2.0 for authentication. You will need to register your application in the Intuit Developer Portal to obtain client credentials. The base URL for the API is https://quickbooks.api.intuit.com/v3/company/{realmId}. Common endpoints include /invoice, /customer, /payment, and /bill. Rate limits apply: 500 requests per minute for production apps. Always implement exponential backoff for 429 responses. ## Stripe Payment Integration Stripe provides both client-side (Stripe.js) and server-side APIs. For PCI compliance, never pass raw card numbers through your server—use Stripe Elements or the Payment Intents API. Webhooks are essential for handling asynchronous events like payment succeeded or subscription renewed. Configure your webhook endpoint to verify signatures using the Stripe-Signature header. ## ShipStation Integration The ShipStation API is REST-based. Authentication uses API key and API secret in the Authorization header. Endpoints cover orders, shipments, carriers, and warehouses. Poll for new orders or use webhooks if available for your plan. Batch operations are supported for bulk label creation. ## Twilio SMS Integration Twilio's REST API requires Account SID and Auth Token. The Messaging API endpoint is /2010-04-01/Accounts/{AccountSid}/Messages.json. For two-way messaging, configure a webhook URL to receive incoming messages. Consider using a queue for high-volume outbound SMS to avoid rate limits. # PentaCodes Technical Reference and Integration Documentation # Version 1.0 | Last Updated March 2025 # This document contains technical reference material for common integrations and deployment procedures. ## QuickBooks Online Integration The QuickBooks Online API uses OAuth 2.0 for authentication. You will need to register your application in the Intuit Developer Portal to obtain client credentials. The base URL for the API is https://quickbooks.api.intuit.com/v3/company/{realmId}. Common endpoints include /invoice, /customer, /payment, and /bill. Rate limits apply: 500 requests per minute for production apps. Always implement exponential backoff for 429 responses. ## Stripe Payment Integration Stripe provides both client-side (Stripe.js) and server-side APIs. For PCI compliance, never pass raw card numbers through your server—use Stripe Elements or the Payment Intents API. Webhooks are essential for handling asynchronous events like payment succeeded or subscription renewed. Configure your webhook endpoint to verify signatures using the Stripe-Signature header. ## ShipStation Integration The ShipStation API is REST-based. Authentication uses API key and API secret in the Authorization header. Endpoints cover orders, shipments, carriers, and warehouses. Poll for new orders or use webhooks if available for your plan. Batch operations are supported for bulk label creation. ## Twilio SMS Integration Twilio's REST API requires Account SID and Auth Token. The Messaging API endpoint is /2010-04-01/Accounts/{AccountSid}/Messages.json. For two-way messaging, configure a webhook URL to receive incoming messages. Consider using a queue for high-volume outbound SMS to avoid rate limits. # PentaCodes Technical Reference and Integration Documentation # Version 1.0 | Last Updated March 2025 # This document contains technical reference material for common integrations and deployment procedures. ## QuickBooks Online Integration The QuickBooks Online API uses OAuth 2.0 for authentication. You will need to register your application in the Intuit Developer Portal to obtain client credentials. The base URL for the API is https://quickbooks.api.intuit.com/v3/company/{realmId}. Common endpoints include /invoice, /customer, /payment, and /bill. Rate limits apply: 500 requests per minute for production apps. Always implement exponential backoff for 429 responses. ## Stripe Payment Integration Stripe provides both client-side (Stripe.js) and server-side APIs. For PCI compliance, never pass raw card numbers through your server—use Stripe Elements or the Payment Intents API. Webhooks are essential for handling asynchronous events like payment succeeded or subscription renewed. Configure your webhook endpoint to verify signatures using the Stripe-Signature header. ## ShipStation Integration The ShipStation API is REST-based. Authentication uses API key and API secret in the Authorization header. Endpoints cover orders, shipments, carriers, and warehouses. Poll for new orders or use webhooks if available for your plan. Batch operations are supported for bulk label creation. ## Twilio SMS Integration Twilio's REST API requires Account SID and Auth Token. The Messaging API endpoint is /2010-04-01/Accounts/{AccountSid}/Messages.json. For two-way messaging, configure a webhook URL to receive incoming messages. Consider using a queue for high-volume outbound SMS to avoid rate limits. # PentaCodes Technical Reference and Integration Documentation # Version 1.0 | Last Updated March 2025 # This document contains technical reference material for common integrations and deployment procedures. ## QuickBooks Online Integration The QuickBooks Online API uses OAuth 2.0 for authentication. You will need to register your application in the Intuit Developer Portal to obtain client credentials. The base URL for the API is https://quickbooks.api.intuit.com/v3/company/{realmId}. Common endpoints include /invoice, /customer, /payment, and /bill. Rate limits apply: 500 requests per minute for production apps. Always implement exponential backoff for 429 responses. ## Stripe Payment Integration Stripe provides both client-side (Stripe.js) and server-side APIs. For PCI compliance, never pass raw card numbers through your server—use Stripe Elements or the Payment Intents API. Webhooks are essential for handling asynchronous events like payment succeeded or subscription renewed. Configure your webhook endpoint to verify signatures using the Stripe-Signature header. ## ShipStation Integration The ShipStation API is REST-based. Authentication uses API key and API secret in the Authorization header. Endpoints cover orders, shipments, carriers, and warehouses. Poll for new orders or use webhooks if available for your plan. Batch operations are supported for bulk label creation. ## Twilio SMS Integration Twilio's REST API requires Account SID and Auth Token. The Messaging API endpoint is /2010-04-01/Accounts/{AccountSid}/Messages.json. For two-way messaging, configure a webhook URL to receive incoming messages. Consider using a queue for high-volume outbound SMS to avoid rate limits. # PentaCodes Technical Reference and Integration Documentation # Version 1.0 | Last Updated March 2025 # This document contains technical reference material for common integrations and deployment procedures. ## QuickBooks Online Integration The QuickBooks Online API uses OAuth 2.0 for authentication. You will need to register your application in the Intuit Developer Portal to obtain client credentials. The base URL for the API is https://quickbooks.api.intuit.com/v3/company/{realmId}. Common endpoints include /invoice, /customer, /payment, and /bill. Rate limits apply: 500 requests per minute for production apps. Always implement exponential backoff for 429 responses. ## Stripe Payment Integration Stripe provides both client-side (Stripe.js) and server-side APIs. For PCI compliance, never pass raw card numbers through your server—use Stripe Elements or the Payment Intents API. Webhooks are essential for handling asynchronous events like payment succeeded or subscription renewed. Configure your webhook endpoint to verify signatures using the Stripe-Signature header. ## ShipStation Integration The ShipStation API is REST-based. Authentication uses API key and API secret in the Authorization header. Endpoints cover orders, shipments, carriers, and warehouses. Poll for new orders or use webhooks if available for your plan. Batch operations are supported for bulk label creation. ## Twilio SMS Integration Twilio's REST API requires Account SID and Auth Token. The Messaging API endpoint is /2010-04-01/Accounts/{AccountSid}/Messages.json. For two-way messaging, configure a webhook URL to receive incoming messages. Consider using a queue for high-volume outbound SMS to avoid rate limits. # PentaCodes Technical Reference and Integration Documentation # Version 1.0 | Last Updated March 2025 # This document contains technical reference material for common integrations and deployment procedures. ## QuickBooks Online Integration The QuickBooks Online API uses OAuth 2.0 for authentication. You will need to register your application in the Intuit Developer Portal to obtain client credentials. The base URL for the API is https://quickbooks.api.intuit.com/v3/company/{realmId}. Common endpoints include /invoice, /customer, /payment, and /bill. Rate limits apply: 500 requests per minute for production apps. Always implement exponential backoff for 429 responses. ## Stripe Payment Integration Stripe provides both client-side (Stripe.js) and server-side APIs. For PCI compliance, never pass raw card numbers through your server—use Stripe Elements or the Payment Intents API. Webhooks are essential for handling asynchronous events like payment succeeded or subscription renewed. Configure your webhook endpoint to verify signatures using the Stripe-Signature header. ## ShipStation Integration The ShipStation API is REST-based. Authentication uses API key and API secret in the Authorization header. Endpoints cover orders, shipments, carriers, and warehouses. Poll for new orders or use webhooks if available for your plan. Batch operations are supported for bulk label creation. ## Twilio SMS Integration Twilio's REST API requires Account SID and Auth Token. The Messaging API endpoint is /2010-04-01/Accounts/{AccountSid}/Messages.json. For two-way messaging, configure a webhook URL to receive incoming messages. Consider using a queue for high-volume outbound SMS to avoid rate limits. # PentaCodes Technical Reference and Integration Documentation # Version 1.0 | Last Updated March 2025 # This document contains technical reference material for common integrations and deployment procedures. ## QuickBooks Online Integration The QuickBooks Online API uses OAuth 2.0 for authentication. You will need to register your application in the Intuit Developer Portal to obtain client credentials. The base URL for the API is https://quickbooks.api.intuit.com/v3/company/{realmId}. Common endpoints include /invoice, /customer, /payment, and /bill. Rate limits apply: 500 requests per minute for production apps. Always implement exponential backoff for 429 responses. ## Stripe Payment Integration Stripe provides both client-side (Stripe.js) and server-side APIs. For PCI compliance, never pass raw card numbers through your server—use Stripe Elements or the Payment Intents API. Webhooks are essential for handling asynchronous events like payment succeeded or subscription renewed. Configure your webhook endpoint to verify signatures using the Stripe-Signature header. ## ShipStation Integration The ShipStation API is REST-based. Authentication uses API key and API secret in the Authorization header. Endpoints cover orders, shipments, carriers, and warehouses. Poll for new orders or use webhooks if available for your plan. Batch operations are supported for bulk label creation. ## Twilio SMS Integration Twilio's REST API requires Account SID and Auth Token. The Messaging API endpoint is /2010-04-01/Accounts/{AccountSid}/Messages.json. For two-way messaging, configure a webhook URL to receive incoming messages. Consider using a queue for high-volume outbound SMS to avoid rate limits. # PentaCodes Technical Reference and Integration Documentation # Version 1.0 | Last Updated March 2025 # This document contains technical reference material for common integrations and deployment procedures. ## QuickBooks Online Integration The QuickBooks Online API uses OAuth 2.0 for authentication. You will need to register your application in the Intuit Developer Portal to obtain client credentials. The base URL for the API is https://quickbooks.api.intuit.com/v3/company/{realmId}. Common endpoints include /invoice, /customer, /payment, and /bill. Rate limits apply: 500 requests per minute for production apps. Always implement exponential backoff for 429 responses. ## Stripe Payment Integration Stripe provides both client-side (Stripe.js) and server-side APIs. For PCI compliance, never pass raw card numbers through your server—use Stripe Elements or the Payment Intents API. Webhooks are essential for handling asynchronous events like payment succeeded or subscription renewed. Configure your webhook endpoint to verify signatures using the Stripe-Signature header. ## ShipStation Integration The ShipStation API is REST-based. Authentication uses API key and API secret in the Authorization header. Endpoints cover orders, shipments, carriers, and warehouses. Poll for new orders or use webhooks if available for your plan. Batch operations are supported for bulk label creation. ## Twilio SMS Integration Twilio's REST API requires Account SID and Auth Token. The Messaging API endpoint is /2010-04-01/Accounts/{AccountSid}/Messages.json. For two-way messaging, configure a webhook URL to receive incoming messages. Consider using a queue for high-volume outbound SMS to avoid rate limits. # PentaCodes Technical Reference and Integration Documentation # Version 1.0 | Last Updated March 2025 # This document contains technical reference material for common integrations and deployment procedures. ## QuickBooks Online Integration The QuickBooks Online API uses OAuth 2.0 for authentication. You will need to register your application in the Intuit Developer Portal to obtain client credentials. The base URL for the API is https://quickbooks.api.intuit.com/v3/company/{realmId}. Common endpoints include /invoice, /customer, /payment, and /bill. Rate limits apply: 500 requests per minute for production apps. Always implement exponential backoff for 429 responses. ## Stripe Payment Integration Stripe provides both client-side (Stripe.js) and server-side APIs. For PCI compliance, never pass raw card numbers through your server—use Stripe Elements or the Payment Intents API. Webhooks are essential for handling asynchronous events like payment succeeded or subscription renewed. Configure your webhook endpoint to verify signatures using the Stripe-Signature header. ## ShipStation Integration The ShipStation API is REST-based. Authentication uses API key and API secret in the Authorization header. Endpoints cover orders, shipments, carriers, and warehouses. Poll for new orders or use webhooks if available for your plan. Batch operations are supported for bulk label creation. ## Twilio SMS Integration Twilio's REST API requires Account SID and Auth Token. The Messaging API endpoint is /2010-04-01/Accounts/{AccountSid}/Messages.json. For two-way messaging, configure a webhook URL to receive incoming messages. Consider using a queue for high-volume outbound SMS to avoid rate limits. # PentaCodes Technical Reference and Integration Documentation # Version 1.0 | Last Updated March 2025 # This document contains technical reference material for common integrations and deployment procedures. ## QuickBooks Online Integration The QuickBooks Online API uses OAuth 2.0 for authentication. You will need to register your application in the Intuit Developer Portal to obtain client credentials. The base URL for the API is https://quickbooks.api.intuit.com/v3/company/{realmId}. Common endpoints include /invoice, /customer, /payment, and /bill. Rate limits apply: 500 requests per minute for production apps. Always implement exponential backoff for 429 responses. ## Stripe Payment Integration Stripe provides both client-side (Stripe.js) and server-side APIs. For PCI compliance, never pass raw card numbers through your server—use Stripe Elements or the Payment Intents API. Webhooks are essential for handling asynchronous events like payment succeeded or subscription renewed. Configure your webhook endpoint to verify signatures using the Stripe-Signature header. ## ShipStation Integration The ShipStation API is REST-based. Authentication uses API key and API secret in the Authorization header. Endpoints cover orders, shipments, carriers, and warehouses. Poll for new orders or use webhooks if available for your plan. Batch operations are supported for bulk label creation. ## Twilio SMS Integration Twilio's REST API requires Account SID and Auth Token. The Messaging API endpoint is /2010-04-01/Accounts/{AccountSid}/Messages.json. For two-way messaging, configure a webhook URL to receive incoming messages. Consider using a queue for high-volume outbound SMS to avoid rate limits. # PentaCodes Technical Reference and Integration Documentation # Version 1.0 | Last Updated March 2025 # This document contains technical reference material for common integrations and deployment procedures. ## QuickBooks Online Integration The QuickBooks Online API uses OAuth 2.0 for authentication. You will need to register your application in the Intuit Developer Portal to obtain client credentials. The base URL for the API is https://quickbooks.api.intuit.com/v3/company/{realmId}. Common endpoints include /invoice, /customer, /payment, and /bill. Rate limits apply: 500 requests per minute for production apps. Always implement exponential backoff for 429 responses. ## Stripe Payment Integration Stripe provides both client-side (Stripe.js) and server-side APIs. For PCI compliance, never pass raw card numbers through your server—use Stripe Elements or the Payment Intents API. Webhooks are essential for handling asynchronous events like payment succeeded or subscription renewed. Configure your webhook endpoint to verify signatures using the Stripe-Signature header. ## ShipStation Integration The ShipStation API is REST-based. Authentication uses API key and API secret in the Authorization header. Endpoints cover orders, shipments, carriers, and warehouses. Poll for new orders or use webhooks if available for your plan. Batch operations are supported for bulk label creation. ## Twilio SMS Integration Twilio's REST API requires Account SID and Auth Token. The Messaging API endpoint is /2010-04-01/Accounts/{AccountSid}/Messages.json. For two-way messaging, configure a webhook URL to receive incoming messages. Consider using a queue for high-volume outbound SMS to avoid rate limits. # PentaCodes Technical Reference and Integration Documentation # Version 1.0 | Last Updated March 2025 # This document contains technical reference material for common integrations and deployment procedures. ## QuickBooks Online Integration The QuickBooks Online API uses OAuth 2.0 for authentication. You will need to register your application in the Intuit Developer Portal to obtain client credentials. The base URL for the API is https://quickbooks.api.intuit.com/v3/company/{realmId}. Common endpoints include /invoice, /customer, /payment, and /bill. Rate limits apply: 500 requests per minute for production apps. Always implement exponential backoff for 429 responses. ## Stripe Payment Integration Stripe provides both client-side (Stripe.js) and server-side APIs. For PCI compliance, never pass raw card numbers through your server—use Stripe Elements or the Payment Intents API. Webhooks are essential for handling asynchronous events like payment succeeded or subscription renewed. Configure your webhook endpoint to verify signatures using the Stripe-Signature header. ## ShipStation Integration The ShipStation API is REST-based. Authentication uses API key and API secret in the Authorization header. Endpoints cover orders, shipments, carriers, and warehouses. Poll for new orders or use webhooks if available for your plan. Batch operations are supported for bulk label creation. ## Twilio SMS Integration Twilio's REST API requires Account SID and Auth Token. The Messaging API endpoint is /2010-04-01/Accounts/{AccountSid}/Messages.json. For two-way messaging, configure a webhook URL to receive incoming messages. Consider using a queue for high-volume outbound SMS to avoid rate limits. # PentaCodes Technical Reference and Integration Documentation # Version 1.0 | Last Updated March 2025 # This document contains technical reference material for common integrations and deployment procedures. ## QuickBooks Online Integration The QuickBooks Online API uses OAuth 2.0 for authentication. You will need to register your application in the Intuit Developer Portal to obtain client credentials. The base URL for the API is https://quickbooks.api.intuit.com/v3/company/{realmId}. Common endpoints include /invoice, /customer, /payment, and /bill. Rate limits apply: 500 requests per minute for production apps. Always implement exponential backoff for 429 responses. ## Stripe Payment Integration Stripe provides both client-side (Stripe.js) and server-side APIs. For PCI compliance, never pass raw card numbers through your server—use Stripe Elements or the Payment Intents API. Webhooks are essential for handling asynchronous events like payment succeeded or subscription renewed. Configure your webhook endpoint to verify signatures using the Stripe-Signature header. ## ShipStation Integration The ShipStation API is REST-based. Authentication uses API key and API secret in the Authorization header. Endpoints cover orders, shipments, carriers, and warehouses. Poll for new orders or use webhooks if available for your plan. Batch operations are supported for bulk label creation. ## Twilio SMS Integration Twilio's REST API requires Account SID and Auth Token. The Messaging API endpoint is /2010-04-01/Accounts/{AccountSid}/Messages.json. For two-way messaging, configure a webhook URL to receive incoming messages. Consider using a queue for high-volume outbound SMS to avoid rate limits. # PentaCodes Technical Reference and Integration Documentation # Version 1.0 | Last Updated March 2025 # This document contains technical reference material for common integrations and deployment procedures. ## QuickBooks Online Integration The QuickBooks Online API uses OAuth 2.0 for authentication. You will need to register your application in the Intuit Developer Portal to obtain client credentials. The base URL for the API is https://quickbooks.api.intuit.com/v3/company/{realmId}. Common endpoints include /invoice, /customer, /payment, and /bill. Rate limits apply: 500 requests per minute for production apps. Always implement exponential backoff for 429 responses. ## Stripe Payment Integration Stripe provides both client-side (Stripe.js) and server-side APIs. For PCI compliance, never pass raw card numbers through your server—use Stripe Elements or the Payment Intents API. Webhooks are essential for handling asynchronous events like payment succeeded or subscription renewed. Configure your webhook endpoint to verify signatures using the Stripe-Signature header. ## ShipStation Integration The ShipStation API is REST-based. Authentication uses API key and API secret in the Authorization header. Endpoints cover orders, shipments, carriers, and warehouses. Poll for new orders or use webhooks if available for your plan. Batch operations are supported for bulk label creation. ## Twilio SMS Integration Twilio's REST API requires Account SID and Auth Token. The Messaging API endpoint is /2010-04-01/Accounts/{AccountSid}/Messages.json. For two-way messaging, configure a webhook URL to receive incoming messages. Consider using a queue for high-volume outbound SMS to avoid rate limits. # PentaCodes Technical Reference and Integration Documentation # Version 1.0 | Last Updated March 2025 # This document contains technical reference material for common integrations and deployment procedures. ## QuickBooks Online Integration The QuickBooks Online API uses OAuth 2.0 for authentication. You will need to register your application in the Intuit Developer Portal to obtain client credentials. The base URL for the API is https://quickbooks.api.intuit.com/v3/company/{realmId}. Common endpoints include /invoice, /customer, /payment, and /bill. Rate limits apply: 500 requests per minute for production apps. Always implement exponential backoff for 429 responses. ## Stripe Payment Integration Stripe provides both client-side (Stripe.js) and server-side APIs. For PCI compliance, never pass raw card numbers through your server—use Stripe Elements or the Payment Intents API. Webhooks are essential for handling asynchronous events like payment succeeded or subscription renewed. Configure your webhook endpoint to verify signatures using the Stripe-Signature header. ## ShipStation Integration The ShipStation API is REST-based. Authentication uses API key and API secret in the Authorization header. Endpoints cover orders, shipments, carriers, and warehouses. Poll for new orders or use webhooks if available for your plan. Batch operations are supported for bulk label creation. ## Twilio SMS Integration Twilio's REST API requires Account SID and Auth Token. The Messaging API endpoint is /2010-04-01/Accounts/{AccountSid}/Messages.json. For two-way messaging, configure a webhook URL to receive incoming messages. Consider using a queue for high-volume outbound SMS to avoid rate limits. # PentaCodes Technical Reference and Integration Documentation # Version 1.0 | Last Updated March 2025 # This document contains technical reference material for common integrations and deployment procedures. ## QuickBooks Online Integration The QuickBooks Online API uses OAuth 2.0 for authentication. You will need to register your application in the Intuit Developer Portal to obtain client credentials. The base URL for the API is https://quickbooks.api.intuit.com/v3/company/{realmId}. Common endpoints include /invoice, /customer, /payment, and /bill. Rate limits apply: 500 requests per minute for production apps. Always implement exponential backoff for 429 responses. ## Stripe Payment Integration Stripe provides both client-side (Stripe.js) and server-side APIs. For PCI compliance, never pass raw card numbers through your server—use Stripe Elements or the Payment Intents API. Webhooks are essential for handling asynchronous events like payment succeeded or subscription renewed. Configure your webhook endpoint to verify signatures using the Stripe-Signature header. ## ShipStation Integration The ShipStation API is REST-based. Authentication uses API key and API secret in the Authorization header. Endpoints cover orders, shipments, carriers, and warehouses. Poll for new orders or use webhooks if available for your plan. Batch operations are supported for bulk label creation. ## Twilio SMS Integration Twilio's REST API requires Account SID and Auth Token. The Messaging API endpoint is /2010-04-01/Accounts/{AccountSid}/Messages.json. For two-way messaging, configure a webhook URL to receive incoming messages. Consider using a queue for high-volume outbound SMS to avoid rate limits. # PentaCodes Technical Reference and Integration Documentation # Version 1.0 | Last Updated March 2025 # This document contains technical reference material for common integrations and deployment procedures. ## QuickBooks Online Integration The QuickBooks Online API uses OAuth 2.0 for authentication. You will need to register your application in the Intuit Developer Portal to obtain client credentials. The base URL for the API is https://quickbooks.api.intuit.com/v3/company/{realmId}. Common endpoints include /invoice, /customer, /payment, and /bill. Rate limits apply: 500 requests per minute for production apps. Always implement exponential backoff for 429 responses. ## Stripe Payment Integration Stripe provides both client-side (Stripe.js) and server-side APIs. For PCI compliance, never pass raw card numbers through your server—use Stripe Elements or the Payment Intents API. Webhooks are essential for handling asynchronous events like payment succeeded or subscription renewed. Configure your webhook endpoint to verify signatures using the Stripe-Signature header. ## ShipStation Integration The ShipStation API is REST-based. Authentication uses API key and API secret in the Authorization header. Endpoints cover orders, shipments, carriers, and warehouses. Poll for new orders or use webhooks if available for your plan. Batch operations are supported for bulk label creation. ## Twilio SMS Integration Twilio's REST API requires Account SID and Auth Token. The Messaging API endpoint is /2010-04-01/Accounts/{AccountSid}/Messages.json. For two-way messaging, configure a webhook URL to receive incoming messages. Consider using a queue for high-volume outbound SMS to avoid rate limits. # PentaCodes Technical Reference and Integration Documentation # Version 1.0 | Last Updated March 2025 # This document contains technical reference material for common integrations and deployment procedures. ## QuickBooks Online Integration The QuickBooks Online API uses OAuth 2.0 for authentication. You will need to register your application in the Intuit Developer Portal to obtain client credentials. The base URL for the API is https://quickbooks.api.intuit.com/v3/company/{realmId}. Common endpoints include /invoice, /customer, /payment, and /bill. Rate limits apply: 500 requests per minute for production apps. Always implement exponential backoff for 429 responses. ## Stripe Payment Integration Stripe provides both client-side (Stripe.js) and server-side APIs. For PCI compliance, never pass raw card numbers through your server—use Stripe Elements or the Payment Intents API. Webhooks are essential for handling asynchronous events like payment succeeded or subscription renewed. Configure your webhook endpoint to verify signatures using the Stripe-Signature header. ## ShipStation Integration The ShipStation API is REST-based. Authentication uses API key and API secret in the Authorization header. Endpoints cover orders, shipments, carriers, and warehouses. Poll for new orders or use webhooks if available for your plan. Batch operations are supported for bulk label creation. ## Twilio SMS Integration Twilio's REST API requires Account SID and Auth Token. The Messaging API endpoint is /2010-04-01/Accounts/{AccountSid}/Messages.json. For two-way messaging, configure a webhook URL to receive incoming messages. Consider using a queue for high-volume outbound SMS to avoid rate limits. # PentaCodes Technical Reference and Integration Documentation # Version 1.0 | Last Updated March 2025 # This document contains technical reference material for common integrations and deployment procedures. ## QuickBooks Online Integration The QuickBooks Online API uses OAuth 2.0 for authentication. You will need to register your application in the Intuit Developer Portal to obtain client credentials. The base URL for the API is https://quickbooks.api.intuit.com/v3/company/{realmId}. Common endpoints include /invoice, /customer, /payment, and /bill. Rate limits apply: 500 requests per minute for production apps. Always implement exponential backoff for 429 responses. ## Stripe Payment Integration Stripe provides both client-side (Stripe.js) and server-side APIs. For PCI compliance, never pass raw card numbers through your server—use Stripe Elements or the Payment Intents API. Webhooks are essential for handling asynchronous events like payment succeeded or subscription renewed. Configure your webhook endpoint to verify signatures using the Stripe-Signature header. ## ShipStation Integration The ShipStation API is REST-based. Authentication uses API key and API secret in the Authorization header. Endpoints cover orders, shipments, carriers, and warehouses. Poll for new orders or use webhooks if available for your plan. Batch operations are supported for bulk label creation. ## Twilio SMS Integration Twilio's REST API requires Account SID and Auth Token. The Messaging API endpoint is /2010-04-01/Accounts/{AccountSid}/Messages.json. For two-way messaging, configure a webhook URL to receive incoming messages. Consider using a queue for high-volume outbound SMS to avoid rate limits. # PentaCodes Technical Reference and Integration Documentation # Version 1.0 | Last Updated March 2025 # This document contains technical reference material for common integrations and deployment procedures. ## QuickBooks Online Integration The QuickBooks Online API uses OAuth 2.0 for authentication. You will need to register your application in the Intuit Developer Portal to obtain client credentials. The base URL for the API is https://quickbooks.api.intuit.com/v3/company/{realmId}. Common endpoints include /invoice, /customer, /payment, and /bill. Rate limits apply: 500 requests per minute for production apps. Always implement exponential backoff for 429 responses. ## Stripe Payment Integration Stripe provides both client-side (Stripe.js) and server-side APIs. For PCI compliance, never pass raw card numbers through your server—use Stripe Elements or the Payment Intents API. Webhooks are essential for handling asynchronous events like payment succeeded or subscription renewed. Configure your webhook endpoint to verify signatures using the Stripe-Signature header. ## ShipStation Integration The ShipStation API is REST-based. Authentication uses API key and API secret in the Authorization header. Endpoints cover orders, shipments, carriers, and warehouses. Poll for new orders or use webhooks if available for your plan. Batch operations are supported for bulk label creation. ## Twilio SMS Integration Twilio's REST API requires Account SID and Auth Token. The Messaging API endpoint is /2010-04-01/Accounts/{AccountSid}/Messages.json. For two-way messaging, configure a webhook URL to receive incoming messages. Consider using a queue for high-volume outbound SMS to avoid rate limits. # PentaCodes Technical Reference and Integration Documentation # Version 1.0 | Last Updated March 2025 # This document contains technical reference material for common integrations and deployment procedures. ## QuickBooks Online Integration The QuickBooks Online API uses OAuth 2.0 for authentication. You will need to register your application in the Intuit Developer Portal to obtain client credentials. The base URL for the API is https://quickbooks.api.intuit.com/v3/company/{realmId}. Common endpoints include /invoice, /customer, /payment, and /bill. Rate limits apply: 500 requests per minute for production apps. Always implement exponential backoff for 429 responses. ## Stripe Payment Integration Stripe provides both client-side (Stripe.js) and server-side APIs. For PCI compliance, never pass raw card numbers through your server—use Stripe Elements or the Payment Intents API. Webhooks are essential for handling asynchronous events like payment succeeded or subscription renewed. Configure your webhook endpoint to verify signatures using the Stripe-Signature header. ## ShipStation Integration The ShipStation API is REST-based. Authentication uses API key and API secret in the Authorization header. Endpoints cover orders, shipments, carriers, and warehouses. Poll for new orders or use webhooks if available for your plan. Batch operations are supported for bulk label creation. ## Twilio SMS Integration Twilio's REST API requires Account SID and Auth Token. The Messaging API endpoint is /2010-04-01/Accounts/{AccountSid}/Messages.json. For two-way messaging, configure a webhook URL to receive incoming messages. Consider using a queue for high-volume outbound SMS to avoid rate limits. # PentaCodes Technical Reference and Integration Documentation # Version 1.0 | Last Updated March 2025 # This document contains technical reference material for common integrations and deployment procedures. ## QuickBooks Online Integration The QuickBooks Online API uses OAuth 2.0 for authentication. You will need to register your application in the Intuit Developer Portal to obtain client credentials. The base URL for the API is https://quickbooks.api.intuit.com/v3/company/{realmId}. Common endpoints include /invoice, /customer, /payment, and /bill. Rate limits apply: 500 requests per minute for production apps. Always implement exponential backoff for 429 responses. ## Stripe Payment Integration Stripe provides both client-side (Stripe.js) and server-side APIs. For PCI compliance, never pass raw card numbers through your server—use Stripe Elements or the Payment Intents API. Webhooks are essential for handling asynchronous events like payment succeeded or subscription renewed. Configure your webhook endpoint to verify signatures using the Stripe-Signature header. ## ShipStation Integration The ShipStation API is REST-based. Authentication uses API key and API secret in the Authorization header. Endpoints cover orders, shipments, carriers, and warehouses. Poll for new orders or use webhooks if available for your plan. Batch operations are supported for bulk label creation. ## Twilio SMS Integration Twilio's REST API requires Account SID and Auth Token. The Messaging API endpoint is /2010-04-01/Accounts/{AccountSid}/Messages.json. For two-way messaging, configure a webhook URL to receive incoming messages. Consider using a queue for high-volume outbound SMS to avoid rate limits. # PentaCodes Technical Reference and Integration Documentation # Version 1.0 | Last Updated March 2025 # This document contains technical reference material for common integrations and deployment procedures. ## QuickBooks Online Integration The QuickBooks Online API uses OAuth 2.0 for authentication. You will need to register your application in the Intuit Developer Portal to obtain client credentials. The base URL for the API is https://quickbooks.api.intuit.com/v3/company/{realmId}. Common endpoints include /invoice, /customer, /payment, and /bill. Rate limits apply: 500 requests per minute for production apps. Always implement exponential backoff for 429 responses. ## Stripe Payment Integration Stripe provides both client-side (Stripe.js) and server-side APIs. For PCI compliance, never pass raw card numbers through your server—use Stripe Elements or the Payment Intents API. Webhooks are essential for handling asynchronous events like payment succeeded or subscription renewed. Configure your webhook endpoint to verify signatures using the Stripe-Signature header. ## ShipStation Integration The ShipStation API is REST-based. Authentication uses API key and API secret in the Authorization header. Endpoints cover orders, shipments, carriers, and warehouses. Poll for new orders or use webhooks if available for your plan. Batch operations are supported for bulk label creation. ## Twilio SMS Integration Twilio's REST API requires Account SID and Auth Token. The Messaging API endpoint is /2010-04-01/Accounts/{AccountSid}/Messages.json. For two-way messaging, configure a webhook URL to receive incoming messages. Consider using a queue for high-volume outbound SMS to avoid rate limits. # PentaCodes Technical Reference and Integration Documentation # Version 1.0 | Last Updated March 2025 # This document contains technical reference material for common integrations and deployment procedures. ## QuickBooks Online Integration The QuickBooks Online API uses OAuth 2.0 for authentication. You will need to register your application in the Intuit Developer Portal to obtain client credentials. The base URL for the API is https://quickbooks.api.intuit.com/v3/company/{realmId}. Common endpoints include /invoice, /customer, /payment, and /bill. Rate limits apply: 500 requests per minute for production apps. Always implement exponential backoff for 429 responses. ## Stripe Payment Integration Stripe provides both client-side (Stripe.js) and server-side APIs. For PCI compliance, never pass raw card numbers through your server—use Stripe Elements or the Payment Intents API. Webhooks are essential for handling asynchronous events like payment succeeded or subscription renewed. Configure your webhook endpoint to verify signatures using the Stripe-Signature header. ## ShipStation Integration The ShipStation API is REST-based. Authentication uses API key and API secret in the Authorization header. Endpoints cover orders, shipments, carriers, and warehouses. Poll for new orders or use webhooks if available for your plan. Batch operations are supported for bulk label creation. ## Twilio SMS Integration Twilio's REST API requires Account SID and Auth Token. The Messaging API endpoint is /2010-04-01/Accounts/{AccountSid}/Messages.json. For two-way messaging, configure a webhook URL to receive incoming messages. Consider using a queue for high-volume outbound SMS to avoid rate limits. # PentaCodes Technical Reference and Integration Documentation # Version 1.0 | Last Updated March 2025 # This document contains technical reference material for common integrations and deployment procedures. ## QuickBooks Online Integration The QuickBooks Online API uses OAuth 2.0 for authentication. You will need to register your application in the Intuit Developer Portal to obtain client credentials. The base URL for the API is https://quickbooks.api.intuit.com/v3/company/{realmId}. Common endpoints include /invoice, /customer, /payment, and /bill. Rate limits apply: 500 requests per minute for production apps. Always implement exponential backoff for 429 responses. ## Stripe Payment Integration Stripe provides both client-side (Stripe.js) and server-side APIs. For PCI compliance, never pass raw card numbers through your server—use Stripe Elements or the Payment Intents API. Webhooks are essential for handling asynchronous events like payment succeeded or subscription renewed. Configure your webhook endpoint to verify signatures using the Stripe-Signature header. ## ShipStation Integration The ShipStation API is REST-based. Authentication uses API key and API secret in the Authorization header. Endpoints cover orders, shipments, carriers, and warehouses. Poll for new orders or use webhooks if available for your plan. Batch operations are supported for bulk label creation. ## Twilio SMS Integration Twilio's REST API requires Account SID and Auth Token. The Messaging API endpoint is /2010-04-01/Accounts/{AccountSid}/Messages.json. For two-way messaging, configure a webhook URL to receive incoming messages. Consider using a queue for high-volume outbound SMS to avoid rate limits. # PentaCodes Technical Reference and Integration Documentation # Version 1.0 | Last Updated March 2025 # This document contains technical reference material for common integrations and deployment procedures. ## QuickBooks Online Integration The QuickBooks Online API uses OAuth 2.0 for authentication. You will need to register your application in the Intuit Developer Portal to obtain client credentials. The base URL for the API is https://quickbooks.api.intuit.com/v3/company/{realmId}. Common endpoints include /invoice, /customer, /payment, and /bill. Rate limits apply: 500 requests per minute for production apps. Always implement exponential backoff for 429 responses. ## Stripe Payment Integration Stripe provides both client-side (Stripe.js) and server-side APIs. For PCI compliance, never pass raw card numbers through your server—use Stripe Elements or the Payment Intents API. Webhooks are essential for handling asynchronous events like payment succeeded or subscription renewed. Configure your webhook endpoint to verify signatures using the Stripe-Signature header. ## ShipStation Integration The ShipStation API is REST-based. Authentication uses API key and API secret in the Authorization header. Endpoints cover orders, shipments, carriers, and warehouses. Poll for new orders or use webhooks if available for your plan. Batch operations are supported for bulk label creation. ## Twilio SMS Integration Twilio's REST API requires Account SID and Auth Token. The Messaging API endpoint is /2010-04-01/Accounts/{AccountSid}/Messages.json. For two-way messaging, configure a webhook URL to receive incoming messages. Consider using a queue for high-volume outbound SMS to avoid rate limits. # PentaCodes Technical Reference and Integration Documentation # Version 1.0 | Last Updated March 2025 # This document contains technical reference material for common integrations and deployment procedures. ## QuickBooks Online Integration The QuickBooks Online API uses OAuth 2.0 for authentication. You will need to register your application in the Intuit Developer Portal to obtain client credentials. The base URL for the API is https://quickbooks.api.intuit.com/v3/company/{realmId}. Common endpoints include /invoice, /customer, /payment, and /bill. Rate limits apply: 500 requests per minute for production apps. Always implement exponential backoff for 429 responses. ## Stripe Payment Integration Stripe provides both client-side (Stripe.js) and server-side APIs. For PCI compliance, never pass raw card numbers through your server—use Stripe Elements or the Payment Intents API. Webhooks are essential for handling asynchronous events like payment succeeded or subscription renewed. Configure your webhook endpoint to verify signatures using the Stripe-Signature header. ## ShipStation Integration The ShipStation API is REST-based. Authentication uses API key and API secret in the Authorization header. Endpoints cover orders, shipments, carriers, and warehouses. Poll for new orders or use webhooks if available for your plan. Batch operations are supported for bulk label creation. ## Twilio SMS Integration Twilio's REST API requires Account SID and Auth Token. The Messaging API endpoint is /2010-04-01/Accounts/{AccountSid}/Messages.json. For two-way messaging, configure a webhook URL to receive incoming messages. Consider using a queue for high-volume outbound SMS to avoid rate limits. # PentaCodes Technical Reference and Integration Documentation # Version 1.0 | Last Updated March 2025 # This document contains technical reference material for common integrations and deployment procedures. ## QuickBooks Online Integration The QuickBooks Online API uses OAuth 2.0 for authentication. You will need to register your application in the Intuit Developer Portal to obtain client credentials. The base URL for the API is https://quickbooks.api.intuit.com/v3/company/{realmId}. Common endpoints include /invoice, /customer, /payment, and /bill. Rate limits apply: 500 requests per minute for production apps. Always implement exponential backoff for 429 responses. ## Stripe Payment Integration Stripe provides both client-side (Stripe.js) and server-side APIs. For PCI compliance, never pass raw card numbers through your server—use Stripe Elements or the Payment Intents API. Webhooks are essential for handling asynchronous events like payment succeeded or subscription renewed. Configure your webhook endpoint to verify signatures using the Stripe-Signature header. ## ShipStation Integration The ShipStation API is REST-based. Authentication uses API key and API secret in the Authorization header. Endpoints cover orders, shipments, carriers, and warehouses. Poll for new orders or use webhooks if available for your plan. Batch operations are supported for bulk label creation. ## Twilio SMS Integration Twilio's REST API requires Account SID and Auth Token. The Messaging API endpoint is /2010-04-01/Accounts/{AccountSid}/Messages.json. For two-way messaging, configure a webhook URL to receive incoming messages. Consider using a queue for high-volume outbound SMS to avoid rate limits. # PentaCodes Technical Reference and Integration Documentation # Version 1.0 | Last Updated March 2025 # This document contains technical reference material for common integrations and deployment procedures. ## QuickBooks Online Integration The QuickBooks Online API uses OAuth 2.0 for authentication. You will need to register your application in the Intuit Developer Portal to obtain client credentials. The base URL for the API is https://quickbooks.api.intuit.com/v3/company/{realmId}. Common endpoints include /invoice, /customer, /payment, and /bill. Rate limits apply: 500 requests per minute for production apps. Always implement exponential backoff for 429 responses. ## Stripe Payment Integration Stripe provides both client-side (Stripe.js) and server-side APIs. For PCI compliance, never pass raw card numbers through your server—use Stripe Elements or the Payment Intents API. Webhooks are essential for handling asynchronous events like payment succeeded or subscription renewed. Configure your webhook endpoint to verify signatures using the Stripe-Signature header. ## ShipStation Integration The ShipStation API is REST-based. Authentication uses API key and API secret in the Authorization header. Endpoints cover orders, shipments, carriers, and warehouses. Poll for new orders or use webhooks if available for your plan. Batch operations are supported for bulk label creation. ## Twilio SMS Integration Twilio's REST API requires Account SID and Auth Token. The Messaging API endpoint is /2010-04-01/Accounts/{AccountSid}/Messages.json. For two-way messaging, configure a webhook URL to receive incoming messages. Consider using a queue for high-volume outbound SMS to avoid rate limits. # PentaCodes Technical Reference and Integration Documentation # Version 1.0 | Last Updated March 2025 # This document contains technical reference material for common integrations and deployment procedures. ## QuickBooks Online Integration The QuickBooks Online API uses OAuth 2.0 for authentication. You will need to register your application in the Intuit Developer Portal to obtain client credentials. The base URL for the API is https://quickbooks.api.intuit.com/v3/company/{realmId}. Common endpoints include /invoice, /customer, /payment, and /bill. Rate limits apply: 500 requests per minute for production apps. Always implement exponential backoff for 429 responses. ## Stripe Payment Integration Stripe provides both client-side (Stripe.js) and server-side APIs. For PCI compliance, never pass raw card numbers through your server—use Stripe Elements or the Payment Intents API. Webhooks are essential for handling asynchronous events like payment succeeded or subscription renewed. Configure your webhook endpoint to verify signatures using the Stripe-Signature header. ## ShipStation Integration The ShipStation API is REST-based. Authentication uses API key and API secret in the Authorization header. Endpoints cover orders, shipments, carriers, and warehouses. Poll for new orders or use webhooks if available for your plan. Batch operations are supported for bulk label creation. ## Twilio SMS Integration Twilio's REST API requires Account SID and Auth Token. The Messaging API endpoint is /2010-04-01/Accounts/{AccountSid}/Messages.json. For two-way messaging, configure a webhook URL to receive incoming messages. Consider using a queue for high-volume outbound SMS to avoid rate limits. # PentaCodes Technical Reference and Integration Documentation # Version 1.0 | Last Updated March 2025 # This document contains technical reference material for common integrations and deployment procedures. ## QuickBooks Online Integration The QuickBooks Online API uses OAuth 2.0 for authentication. You will need to register your application in the Intuit Developer Portal to obtain client credentials. The base URL for the API is https://quickbooks.api.intuit.com/v3/company/{realmId}. Common endpoints include /invoice, /customer, /payment, and /bill. Rate limits apply: 500 requests per minute for production apps. Always implement exponential backoff for 429 responses. ## Stripe Payment Integration Stripe provides both client-side (Stripe.js) and server-side APIs. For PCI compliance, never pass raw card numbers through your server—use Stripe Elements or the Payment Intents API. Webhooks are essential for handling asynchronous events like payment succeeded or subscription renewed. Configure your webhook endpoint to verify signatures using the Stripe-Signature header. ## ShipStation Integration The ShipStation API is REST-based. Authentication uses API key and API secret in the Authorization header. Endpoints cover orders, shipments, carriers, and warehouses. Poll for new orders or use webhooks if available for your plan. Batch operations are supported for bulk label creation. ## Twilio SMS Integration Twilio's REST API requires Account SID and Auth Token. The Messaging API endpoint is /2010-04-01/Accounts/{AccountSid}/Messages.json. For two-way messaging, configure a webhook URL to receive incoming messages. Consider using a queue for high-volume outbound SMS to avoid rate limits. # PentaCodes Technical Reference and Integration Documentation # Version 1.0 | Last Updated March 2025 # This document contains technical reference material for common integrations and deployment procedures. ## QuickBooks Online Integration The QuickBooks Online API uses OAuth 2.0 for authentication. You will need to register your application in the Intuit Developer Portal to obtain client credentials. The base URL for the API is https://quickbooks.api.intuit.com/v3/company/{realmId}. Common endpoints include /invoice, /customer, /payment, and /bill. Rate limits apply: 500 requests per minute for production apps. Always implement exponential backoff for 429 responses. ## Stripe Payment Integration Stripe provides both client-side (Stripe.js) and server-side APIs. For PCI compliance, never pass raw card numbers through your server—use Stripe Elements or the Payment Intents API. Webhooks are essential for handling asynchronous events like payment succeeded or subscription renewed. Configure your webhook endpoint to verify signatures using the Stripe-Signature header. ## ShipStation Integration The ShipStation API is REST-based. Authentication uses API key and API secret in the Authorization header. Endpoints cover orders, shipments, carriers, and warehouses. Poll for new orders or use webhooks if available for your plan. Batch operations are supported for bulk label creation. ## Twilio SMS Integration Twilio's REST API requires Account SID and Auth Token. The Messaging API endpoint is /2010-04-01/Accounts/{AccountSid}/Messages.json. For two-way messaging, configure a webhook URL to receive incoming messages. Consider using a queue for high-volume outbound SMS to avoid rate limits. # PentaCodes Technical Reference and Integration Documentation # Version 1.0 | Last Updated March 2025 # This document contains technical reference material for common integrations and deployment procedures. ## QuickBooks Online Integration The QuickBooks Online API uses OAuth 2.0 for authentication. You will need to register your application in the Intuit Developer Portal to obtain client credentials. The base URL for the API is https://quickbooks.api.intuit.com/v3/company/{realmId}. Common endpoints include /invoice, /customer, /payment, and /bill. Rate limits apply: 500 requests per minute for production apps. Always implement exponential backoff for 429 responses. ## Stripe Payment Integration Stripe provides both client-side (Stripe.js) and server-side APIs. For PCI compliance, never pass raw card numbers through your server—use Stripe Elements or the Payment Intents API. Webhooks are essential for handling asynchronous events like payment succeeded or subscription renewed. Configure your webhook endpoint to verify signatures using the Stripe-Signature header. ## ShipStation Integration The ShipStation API is REST-based. Authentication uses API key and API secret in the Authorization header. Endpoints cover orders, shipments, carriers, and warehouses. Poll for new orders or use webhooks if available for your plan. Batch operations are supported for bulk label creation. ## Twilio SMS Integration Twilio's REST API requires Account SID and Auth Token. The Messaging API endpoint is /2010-04-01/Accounts/{AccountSid}/Messages.json. For two-way messaging, configure a webhook URL to receive incoming messages. Consider using a queue for high-volume outbound SMS to avoid rate limits. # PentaCodes Technical Reference and Integration Documentation # Version 1.0 | Last Updated March 2025 # This document contains technical reference material for common integrations and deployment procedures. ## QuickBooks Online Integration The QuickBooks Online API uses OAuth 2.0 for authentication. You will need to register your application in the Intuit Developer Portal to obtain client credentials. The base URL for the API is https://quickbooks.api.intuit.com/v3/company/{realmId}. Common endpoints include /invoice, /customer, /payment, and /bill. Rate limits apply: 500 requests per minute for production apps. Always implement exponential backoff for 429 responses. ## Stripe Payment Integration Stripe provides both client-side (Stripe.js) and server-side APIs. For PCI compliance, never pass raw card numbers through your server—use Stripe Elements or the Payment Intents API. Webhooks are essential for handling asynchronous events like payment succeeded or subscription renewed. Configure your webhook endpoint to verify signatures using the Stripe-Signature header. ## ShipStation Integration The ShipStation API is REST-based. Authentication uses API key and API secret in the Authorization header. Endpoints cover orders, shipments, carriers, and warehouses. Poll for new orders or use webhooks if available for your plan. Batch operations are supported for bulk label creation. ## Twilio SMS Integration Twilio's REST API requires Account SID and Auth Token. The Messaging API endpoint is /2010-04-01/Accounts/{AccountSid}/Messages.json. For two-way messaging, configure a webhook URL to receive incoming messages. Consider using a queue for high-volume outbound SMS to avoid rate limits. # PentaCodes Technical Reference and Integration Documentation # Version 1.0 | Last Updated March 2025 # This document contains technical reference material for common integrations and deployment procedures. ## QuickBooks Online Integration The QuickBooks Online API uses OAuth 2.0 for authentication. You will need to register your application in the Intuit Developer Portal to obtain client credentials. The base URL for the API is https://quickbooks.api.intuit.com/v3/company/{realmId}. Common endpoints include /invoice, /customer, /payment, and /bill. Rate limits apply: 500 requests per minute for production apps. Always implement exponential backoff for 429 responses. ## Stripe Payment Integration Stripe provides both client-side (Stripe.js) and server-side APIs. For PCI compliance, never pass raw card numbers through your server—use Stripe Elements or the Payment Intents API. Webhooks are essential for handling asynchronous events like payment succeeded or subscription renewed. Configure your webhook endpoint to verify signatures using the Stripe-Signature header. ## ShipStation Integration The ShipStation API is REST-based. Authentication uses API key and API secret in the Authorization header. Endpoints cover orders, shipments, carriers, and warehouses. Poll for new orders or use webhooks if available for your plan. Batch operations are supported for bulk label creation. ## Twilio SMS Integration Twilio's REST API requires Account SID and Auth Token. The Messaging API endpoint is /2010-04-01/Accounts/{AccountSid}/Messages.json. For two-way messaging, configure a webhook URL to receive incoming messages. Consider using a queue for high-volume outbound SMS to avoid rate limits. # PentaCodes Technical Reference and Integration Documentation # Version 1.0 | Last Updated March 2025 # This document contains technical reference material for common integrations and deployment procedures. ## QuickBooks Online Integration The QuickBooks Online API uses OAuth 2.0 for authentication. You will need to register your application in the Intuit Developer Portal to obtain client credentials. The base URL for the API is https://quickbooks.api.intuit.com/v3/company/{realmId}. Common endpoints include /invoice, /customer, /payment, and /bill. Rate limits apply: 500 requests per minute for production apps. Always implement exponential backoff for 429 responses. ## Stripe Payment Integration Stripe provides both client-side (Stripe.js) and server-side APIs. For PCI compliance, never pass raw card numbers through your server—use Stripe Elements or the Payment Intents API. Webhooks are essential for handling asynchronous events like payment succeeded or subscription renewed. Configure your webhook endpoint to verify signatures using the Stripe-Signature header. ## ShipStation Integration The ShipStation API is REST-based. Authentication uses API key and API secret in the Authorization header. Endpoints cover orders, shipments, carriers, and warehouses. Poll for new orders or use webhooks if available for your plan. Batch operations are supported for bulk label creation. ## Twilio SMS Integration Twilio's REST API requires Account SID and Auth Token. The Messaging API endpoint is /2010-04-01/Accounts/{AccountSid}/Messages.json. For two-way messaging, configure a webhook URL to receive incoming messages. Consider using a queue for high-volume outbound SMS to avoid rate limits. # PentaCodes Technical Reference and Integration Documentation # Version 1.0 | Last Updated March 2025 # This document contains technical reference material for common integrations and deployment procedures. ## QuickBooks Online Integration The QuickBooks Online API uses OAuth 2.0 for authentication. You will need to register your application in the Intuit Developer Portal to obtain client credentials. The base URL for the API is https://quickbooks.api.intuit.com/v3/company/{realmId}. Common endpoints include /invoice, /customer, /payment, and /bill. Rate limits apply: 500 requests per minute for production apps. Always implement exponential backoff for 429 responses. ## Stripe Payment Integration Stripe provides both client-side (Stripe.js) and server-side APIs. For PCI compliance, never pass raw card numbers through your server—use Stripe Elements or the Payment Intents API. Webhooks are essential for handling asynchronous events like payment succeeded or subscription renewed. Configure your webhook endpoint to verify signatures using the Stripe-Signature header. ## ShipStation Integration The ShipStation API is REST-based. Authentication uses API key and API secret in the Authorization header. Endpoints cover orders, shipments, carriers, and warehouses. Poll for new orders or use webhooks if available for your plan. Batch operations are supported for bulk label creation. ## Twilio SMS Integration Twilio's REST API requires Account SID and Auth Token. The Messaging API endpoint is /2010-04-01/Accounts/{AccountSid}/Messages.json. For two-way messaging, configure a webhook URL to receive incoming messages. Consider using a queue for high-volume outbound SMS to avoid rate limits. # PentaCodes Technical Reference and Integration Documentation # Version 1.0 | Last Updated March 2025 # This document contains technical reference material for common integrations and deployment procedures. ## QuickBooks Online Integration The QuickBooks Online API uses OAuth 2.0 for authentication. You will need to register your application in the Intuit Developer Portal to obtain client credentials. The base URL for the API is https://quickbooks.api.intuit.com/v3/company/{realmId}. Common endpoints include /invoice, /customer, /payment, and /bill. Rate limits apply: 500 requests per minute for production apps. Always implement exponential backoff for 429 responses. ## Stripe Payment Integration Stripe provides both client-side (Stripe.js) and server-side APIs. For PCI compliance, never pass raw card numbers through your server—use Stripe Elements or the Payment Intents API. Webhooks are essential for handling asynchronous events like payment succeeded or subscription renewed. Configure your webhook endpoint to verify signatures using the Stripe-Signature header. ## ShipStation Integration The ShipStation API is REST-based. Authentication uses API key and API secret in the Authorization header. Endpoints cover orders, shipments, carriers, and warehouses. Poll for new orders or use webhooks if available for your plan. Batch operations are supported for bulk label creation. ## Twilio SMS Integration Twilio's REST API requires Account SID and Auth Token. The Messaging API endpoint is /2010-04-01/Accounts/{AccountSid}/Messages.json. For two-way messaging, configure a webhook URL to receive incoming messages. Consider using a queue for high-volume outbound SMS to avoid rate limits. # PentaCodes Technical Reference and Integration Documentation # Version 1.0 | Last Updated March 2025 # This document contains technical reference material for common integrations and deployment procedures. ## QuickBooks Online Integration The QuickBooks Online API uses OAuth 2.0 for authentication. You will need to register your application in the Intuit Developer Portal to obtain client credentials. The base URL for the API is https://quickbooks.api.intuit.com/v3/company/{realmId}. Common endpoints include /invoice, /customer, /payment, and /bill. Rate limits apply: 500 requests per minute for production apps. Always implement exponential backoff for 429 responses. ## Stripe Payment Integration Stripe provides both client-side (Stripe.js) and server-side APIs. For PCI compliance, never pass raw card numbers through your server—use Stripe Elements or the Payment Intents API. Webhooks are essential for handling asynchronous events like payment succeeded or subscription renewed. Configure your webhook endpoint to verify signatures using the Stripe-Signature header. ## ShipStation Integration The ShipStation API is REST-based. Authentication uses API key and API secret in the Authorization header. Endpoints cover orders, shipments, carriers, and warehouses. Poll for new orders or use webhooks if available for your plan. Batch operations are supported for bulk label creation. ## Twilio SMS Integration Twilio's REST API requires Account SID and Auth Token. The Messaging API endpoint is /2010-04-01/Accounts/{AccountSid}/Messages.json. For two-way messaging, configure a webhook URL to receive incoming messages. Consider using a queue for high-volume outbound SMS to avoid rate limits. # PentaCodes Technical Reference and Integration Documentation # Version 1.0 | Last Updated March 2025 # This document contains technical reference material for common integrations and deployment procedures. ## QuickBooks Online Integration The QuickBooks Online API uses OAuth 2.0 for authentication. You will need to register your application in the Intuit Developer Portal to obtain client credentials. The base URL for the API is https://quickbooks.api.intuit.com/v3/company/{realmId}. Common endpoints include /invoice, /customer, /payment, and /bill. Rate limits apply: 500 requests per minute for production apps. Always implement exponential backoff for 429 responses. ## Stripe Payment Integration Stripe provides both client-side (Stripe.js) and server-side APIs. For PCI compliance, never pass raw card numbers through your server—use Stripe Elements or the Payment Intents API. Webhooks are essential for handling asynchronous events like payment succeeded or subscription renewed. Configure your webhook endpoint to verify signatures using the Stripe-Signature header. ## ShipStation Integration The ShipStation API is REST-based. Authentication uses API key and API secret in the Authorization header. Endpoints cover orders, shipments, carriers, and warehouses. Poll for new orders or use webhooks if available for your plan. Batch operations are supported for bulk label creation. ## Twilio SMS Integration Twilio's REST API requires Account SID and Auth Token. The Messaging API endpoint is /2010-04-01/Accounts/{AccountSid}/Messages.json. For two-way messaging, configure a webhook URL to receive incoming messages. Consider using a queue for high-volume outbound SMS to avoid rate limits. # PentaCodes Technical Reference and Integration Documentation # Version 1.0 | Last Updated March 2025 # This document contains technical reference material for common integrations and deployment procedures. ## QuickBooks Online Integration The QuickBooks Online API uses OAuth 2.0 for authentication. You will need to register your application in the Intuit Developer Portal to obtain client credentials. The base URL for the API is https://quickbooks.api.intuit.com/v3/company/{realmId}. Common endpoints include /invoice, /customer, /payment, and /bill. Rate limits apply: 500 requests per minute for production apps. Always implement exponential backoff for 429 responses. ## Stripe Payment Integration Stripe provides both client-side (Stripe.js) and server-side APIs. For PCI compliance, never pass raw card numbers through your server—use Stripe Elements or the Payment Intents API. Webhooks are essential for handling asynchronous events like payment succeeded or subscription renewed. Configure your webhook endpoint to verify signatures using the Stripe-Signature header. ## ShipStation Integration The ShipStation API is REST-based. Authentication uses API key and API secret in the Authorization header. Endpoints cover orders, shipments, carriers, and warehouses. Poll for new orders or use webhooks if available for your plan. Batch operations are supported for bulk label creation. ## Twilio SMS Integration Twilio's REST API requires Account SID and Auth Token. The Messaging API endpoint is /2010-04-01/Accounts/{AccountSid}/Messages.json. For two-way messaging, configure a webhook URL to receive incoming messages. Consider using a queue for high-volume outbound SMS to avoid rate limits. # PentaCodes Technical Reference and Integration Documentation # Version 1.0 | Last Updated March 2025 # This document contains technical reference material for common integrations and deployment procedures. ## QuickBooks Online Integration The QuickBooks Online API uses OAuth 2.0 for authentication. You will need to register your application in the Intuit Developer Portal to obtain client credentials. The base URL for the API is https://quickbooks.api.intuit.com/v3/company/{realmId}. Common endpoints include /invoice, /customer, /payment, and /bill. Rate limits apply: 500 requests per minute for production apps. Always implement exponential backoff for 429 responses. ## Stripe Payment Integration Stripe provides both client-side (Stripe.js) and server-side APIs. For PCI compliance, never pass raw card numbers through your server—use Stripe Elements or the Payment Intents API. Webhooks are essential for handling asynchronous events like payment succeeded or subscription renewed. Configure your webhook endpoint to verify signatures using the Stripe-Signature header. ## ShipStation Integration The ShipStation API is REST-based. Authentication uses API key and API secret in the Authorization header. Endpoints cover orders, shipments, carriers, and warehouses. Poll for new orders or use webhooks if available for your plan. Batch operations are supported for bulk label creation. ## Twilio SMS Integration Twilio's REST API requires Account SID and Auth Token. The Messaging API endpoint is /2010-04-01/Accounts/{AccountSid}/Messages.json. For two-way messaging, configure a webhook URL to receive incoming messages. Consider using a queue for high-volume outbound SMS to avoid rate limits. # PentaCodes Technical Reference and Integration Documentation # Version 1.0 | Last Updated March 2025 # This document contains technical reference material for common integrations and deployment procedures. ## QuickBooks Online Integration The QuickBooks Online API uses OAuth 2.0 for authentication. You will need to register your application in the Intuit Developer Portal to obtain client credentials. The base URL for the API is https://quickbooks.api.intuit.com/v3/company/{realmId}. Common endpoints include /invoice, /customer, /payment, and /bill. Rate limits apply: 500 requests per minute for production apps. Always implement exponential backoff for 429 responses. ## Stripe Payment Integration Stripe provides both client-side (Stripe.js) and server-side APIs. For PCI compliance, never pass raw card numbers through your server—use Stripe Elements or the Payment Intents API. Webhooks are essential for handling asynchronous events like payment succeeded or subscription renewed. Configure your webhook endpoint to verify signatures using the Stripe-Signature header. ## ShipStation Integration The ShipStation API is REST-based. Authentication uses API key and API secret in the Authorization header. Endpoints cover orders, shipments, carriers, and warehouses. Poll for new orders or use webhooks if available for your plan. Batch operations are supported for bulk label creation. ## Twilio SMS Integration Twilio's REST API requires Account SID and Auth Token. The Messaging API endpoint is /2010-04-01/Accounts/{AccountSid}/Messages.json. For two-way messaging, configure a webhook URL to receive incoming messages. Consider using a queue for high-volume outbound SMS to avoid rate limits. # PentaCodes Technical Reference and Integration Documentation # Version 1.0 | Last Updated March 2025 # This document contains technical reference material for common integrations and deployment procedures. ## QuickBooks Online Integration The QuickBooks Online API uses OAuth 2.0 for authentication. You will need to register your application in the Intuit Developer Portal to obtain client credentials. The base URL for the API is https://quickbooks.api.intuit.com/v3/company/{realmId}. Common endpoints include /invoice, /customer, /payment, and /bill. Rate limits apply: 500 requests per minute for production apps. Always implement exponential backoff for 429 responses. ## Stripe Payment Integration Stripe provides both client-side (Stripe.js) and server-side APIs. For PCI compliance, never pass raw card numbers through your server—use Stripe Elements or the Payment Intents API. Webhooks are essential for handling asynchronous events like payment succeeded or subscription renewed. Configure your webhook endpoint to verify signatures using the Stripe-Signature header. ## ShipStation Integration The ShipStation API is REST-based. Authentication uses API key and API secret in the Authorization header. Endpoints cover orders, shipments, carriers, and warehouses. Poll for new orders or use webhooks if available for your plan. Batch operations are supported for bulk label creation. ## Twilio SMS Integration Twilio's REST API requires Account SID and Auth Token. The Messaging API endpoint is /2010-04-01/Accounts/{AccountSid}/Messages.json. For two-way messaging, configure a webhook URL to receive incoming messages. Consider using a queue for high-volume outbound SMS to avoid rate limits. # PentaCodes Technical Reference and Integration Documentation # Version 1.0 | Last Updated March 2025 # This document contains technical reference material for common integrations and deployment procedures. ## QuickBooks Online Integration The QuickBooks Online API uses OAuth 2.0 for authentication. You will need to register your application in the Intuit Developer Portal to obtain client credentials. The base URL for the API is https://quickbooks.api.intuit.com/v3/company/{realmId}. Common endpoints include /invoice, /customer, /payment, and /bill. Rate limits apply: 500 requests per minute for production apps. Always implement exponential backoff for 429 responses. ## Stripe Payment Integration Stripe provides both client-side (Stripe.js) and server-side APIs. For PCI compliance, never pass raw card numbers through your server—use Stripe Elements or the Payment Intents API. Webhooks are essential for handling asynchronous events like payment succeeded or subscription renewed. Configure your webhook endpoint to verify signatures using the Stripe-Signature header. ## ShipStation Integration The ShipStation API is REST-based. Authentication uses API key and API secret in the Authorization header. Endpoints cover orders, shipments, carriers, and warehouses. Poll for new orders or use webhooks if available for your plan. Batch operations are supported for bulk label creation. ## Twilio SMS Integration Twilio's REST API requires Account SID and Auth Token. The Messaging API endpoint is /2010-04-01/Accounts/{AccountSid}/Messages.json. For two-way messaging, configure a webhook URL to receive incoming messages. Consider using a queue for high-volume outbound SMS to avoid rate limits. # PentaCodes Technical Reference and Integration Documentation # Version 1.0 | Last Updated March 2025 # This document contains technical reference material for common integrations and deployment procedures. ## QuickBooks Online Integration The QuickBooks Online API uses OAuth 2.0 for authentication. You will need to register your application in the Intuit Developer Portal to obtain client credentials. The base URL for the API is https://quickbooks.api.intuit.com/v3/company/{realmId}. Common endpoints include /invoice, /customer, /payment, and /bill. Rate limits apply: 500 requests per minute for production apps. Always implement exponential backoff for 429 responses. ## Stripe Payment Integration Stripe provides both client-side (Stripe.js) and server-side APIs. For PCI compliance, never pass raw card numbers through your server—use Stripe Elements or the Payment Intents API. Webhooks are essential for handling asynchronous events like payment succeeded or subscription renewed. Configure your webhook endpoint to verify signatures using the Stripe-Signature header. ## ShipStation Integration The ShipStation API is REST-based. Authentication uses API key and API secret in the Authorization header. Endpoints cover orders, shipments, carriers, and warehouses. Poll for new orders or use webhooks if available for your plan. Batch operations are supported for bulk label creation. ## Twilio SMS Integration Twilio's REST API requires Account SID and Auth Token. The Messaging API endpoint is /2010-04-01/Accounts/{AccountSid}/Messages.json. For two-way messaging, configure a webhook URL to receive incoming messages. Consider using a queue for high-volume outbound SMS to avoid rate limits. # PentaCodes Technical Reference and Integration Documentation # Version 1.0 | Last Updated March 2025 # This document contains technical reference material for common integrations and deployment procedures. ## QuickBooks Online Integration The QuickBooks Online API uses OAuth 2.0 for authentication. You will need to register your application in the Intuit Developer Portal to obtain client credentials. The base URL for the API is https://quickbooks.api.intuit.com/v3/company/{realmId}. Common endpoints include /invoice, /customer, /payment, and /bill. Rate limits apply: 500 requests per minute for production apps. Always implement exponential backoff for 429 responses. ## Stripe Payment Integration Stripe provides both client-side (Stripe.js) and server-side APIs. For PCI compliance, never pass raw card numbers through your server—use Stripe Elements or the Payment Intents API. Webhooks are essential for handling asynchronous events like payment succeeded or subscription renewed. Configure your webhook endpoint to verify signatures using the Stripe-Signature header. ## ShipStation Integration The ShipStation API is REST-based. Authentication uses API key and API secret in the Authorization header. Endpoints cover orders, shipments, carriers, and warehouses. Poll for new orders or use webhooks if available for your plan. Batch operations are supported for bulk label creation. ## Twilio SMS Integration Twilio's REST API requires Account SID and Auth Token. The Messaging API endpoint is /2010-04-01/Accounts/{AccountSid}/Messages.json. For two-way messaging, configure a webhook URL to receive incoming messages. Consider using a queue for high-volume outbound SMS to avoid rate limits. # PentaCodes Technical Reference and Integration Documentation # Version 1.0 | Last Updated March 2025 # This document contains technical reference material for common integrations and deployment procedures. ## QuickBooks Online Integration The QuickBooks Online API uses OAuth 2.0 for authentication. You will need to register your application in the Intuit Developer Portal to obtain client credentials. The base URL for the API is https://quickbooks.api.intuit.com/v3/company/{realmId}. Common endpoints include /invoice, /customer, /payment, and /bill. Rate limits apply: 500 requests per minute for production apps. Always implement exponential backoff for 429 responses. ## Stripe Payment Integration Stripe provides both client-side (Stripe.js) and server-side APIs. For PCI compliance, never pass raw card numbers through your server—use Stripe Elements or the Payment Intents API. Webhooks are essential for handling asynchronous events like payment succeeded or subscription renewed. Configure your webhook endpoint to verify signatures using the Stripe-Signature header. ## ShipStation Integration The ShipStation API is REST-based. Authentication uses API key and API secret in the Authorization header. Endpoints cover orders, shipments, carriers, and warehouses. Poll for new orders or use webhooks if available for your plan. Batch operations are supported for bulk label creation. ## Twilio SMS Integration Twilio's REST API requires Account SID and Auth Token. The Messaging API endpoint is /2010-04-01/Accounts/{AccountSid}/Messages.json. For two-way messaging, configure a webhook URL to receive incoming messages. Consider using a queue for high-volume outbound SMS to avoid rate limits. # PentaCodes Technical Reference and Integration Documentation # Version 1.0 | Last Updated March 2025 # This document contains technical reference material for common integrations and deployment procedures. ## QuickBooks Online Integration The QuickBooks Online API uses OAuth 2.0 for authentication. You will need to register your application in the Intuit Developer Portal to obtain client credentials. The base URL for the API is https://quickbooks.api.intuit.com/v3/company/{realmId}. Common endpoints include /invoice, /customer, /payment, and /bill. Rate limits apply: 500 requests per minute for production apps. Always implement exponential backoff for 429 responses. ## Stripe Payment Integration Stripe provides both client-side (Stripe.js) and server-side APIs. For PCI compliance, never pass raw card numbers through your server—use Stripe Elements or the Payment Intents API. Webhooks are essential for handling asynchronous events like payment succeeded or subscription renewed. Configure your webhook endpoint to verify signatures using the Stripe-Signature header. ## ShipStation Integration The ShipStation API is REST-based. Authentication uses API key and API secret in the Authorization header. Endpoints cover orders, shipments, carriers, and warehouses. Poll for new orders or use webhooks if available for your plan. Batch operations are supported for bulk label creation. ## Twilio SMS Integration Twilio's REST API requires Account SID and Auth Token. The Messaging API endpoint is /2010-04-01/Accounts/{AccountSid}/Messages.json. For two-way messaging, configure a webhook URL to receive incoming messages. Consider using a queue for high-volume outbound SMS to avoid rate limits. # PentaCodes Technical Reference and Integration Documentation # Version 1.0 | Last Updated March 2025 # This document contains technical reference material for common integrations and deployment procedures. ## QuickBooks Online Integration The QuickBooks Online API uses OAuth 2.0 for authentication. You will need to register your application in the Intuit Developer Portal to obtain client credentials. The base URL for the API is https://quickbooks.api.intuit.com/v3/company/{realmId}. Common endpoints include /invoice, /customer, /payment, and /bill. Rate limits apply: 500 requests per minute for production apps. Always implement exponential backoff for 429 responses. ## Stripe Payment Integration Stripe provides both client-side (Stripe.js) and server-side APIs. For PCI compliance, never pass raw card numbers through your server—use Stripe Elements or the Payment Intents API. Webhooks are essential for handling asynchronous events like payment succeeded or subscription renewed. Configure your webhook endpoint to verify signatures using the Stripe-Signature header. ## ShipStation Integration The ShipStation API is REST-based. Authentication uses API key and API secret in the Authorization header. Endpoints cover orders, shipments, carriers, and warehouses. Poll for new orders or use webhooks if available for your plan. Batch operations are supported for bulk label creation. ## Twilio SMS Integration Twilio's REST API requires Account SID and Auth Token. The Messaging API endpoint is /2010-04-01/Accounts/{AccountSid}/Messages.json. For two-way messaging, configure a webhook URL to receive incoming messages. Consider using a queue for high-volume outbound SMS to avoid rate limits. # PentaCodes Technical Reference and Integration Documentation # Version 1.0 | Last Updated March 2025 # This document contains technical reference material for common integrations and deployment procedures. ## QuickBooks Online Integration The QuickBooks Online API uses OAuth 2.0 for authentication. You will need to register your application in the Intuit Developer Portal to obtain client credentials. The base URL for the API is https://quickbooks.api.intuit.com/v3/company/{realmId}. Common endpoints include /invoice, /customer, /payment, and /bill. Rate limits apply: 500 requests per minute for production apps. Always implement exponential backoff for 429 responses. ## Stripe Payment Integration Stripe provides both client-side (Stripe.js) and server-side APIs. For PCI compliance, never pass raw card numbers through your server—use Stripe Elements or the Payment Intents API. Webhooks are essential for handling asynchronous events like payment succeeded or subscription renewed. Configure your webhook endpoint to verify signatures using the Stripe-Signature header. ## ShipStation Integration The ShipStation API is REST-based. Authentication uses API key and API secret in the Authorization header. Endpoints cover orders, shipments, carriers, and warehouses. Poll for new orders or use webhooks if available for your plan. Batch operations are supported for bulk label creation. ## Twilio SMS Integration Twilio's REST API requires Account SID and Auth Token. The Messaging API endpoint is /2010-04-01/Accounts/{AccountSid}/Messages.json. For two-way messaging, configure a webhook URL to receive incoming messages. Consider using a queue for high-volume outbound SMS to avoid rate limits. # PentaCodes Technical Reference and Integration Documentation # Version 1.0 | Last Updated March 2025 # This document contains technical reference material for common integrations and deployment procedures. ## QuickBooks Online Integration The QuickBooks Online API uses OAuth 2.0 for authentication. You will need to register your application in the Intuit Developer Portal to obtain client credentials. The base URL for the API is https://quickbooks.api.intuit.com/v3/company/{realmId}. Common endpoints include /invoice, /customer, /payment, and /bill. Rate limits apply: 500 requests per minute for production apps. Always implement exponential backoff for 429 responses. ## Stripe Payment Integration Stripe provides both client-side (Stripe.js) and server-side APIs. For PCI compliance, never pass raw card numbers through your server—use Stripe Elements or the Payment Intents API. Webhooks are essential for handling asynchronous events like payment succeeded or subscription renewed. Configure your webhook endpoint to verify signatures using the Stripe-Signature header. ## ShipStation Integration The ShipStation API is REST-based. Authentication uses API key and API secret in the Authorization header. Endpoints cover orders, shipments, carriers, and warehouses. Poll for new orders or use webhooks if available for your plan. Batch operations are supported for bulk label creation. ## Twilio SMS Integration Twilio's REST API requires Account SID and Auth Token. The Messaging API endpoint is /2010-04-01/Accounts/{AccountSid}/Messages.json. For two-way messaging, configure a webhook URL to receive incoming messages. Consider using a queue for high-volume outbound SMS to avoid rate limits. # PentaCodes Technical Reference and Integration Documentation # Version 1.0 | Last Updated March 2025 # This document contains technical reference material for common integrations and deployment procedures. ## QuickBooks Online Integration The QuickBooks Online API uses OAuth 2.0 for authentication. You will need to register your application in the Intuit Developer Portal to obtain client credentials. The base URL for the API is https://quickbooks.api.intuit.com/v3/company/{realmId}. Common endpoints include /invoice, /customer, /payment, and /bill. Rate limits apply: 500 requests per minute for production apps. Always implement exponential backoff for 429 responses. ## Stripe Payment Integration Stripe provides both client-side (Stripe.js) and server-side APIs. For PCI compliance, never pass raw card numbers through your server—use Stripe Elements or the Payment Intents API. Webhooks are essential for handling asynchronous events like payment succeeded or subscription renewed. Configure your webhook endpoint to verify signatures using the Stripe-Signature header. ## ShipStation Integration The ShipStation API is REST-based. Authentication uses API key and API secret in the Authorization header. Endpoints cover orders, shipments, carriers, and warehouses. Poll for new orders or use webhooks if available for your plan. Batch operations are supported for bulk label creation. ## Twilio SMS Integration Twilio's REST API requires Account SID and Auth Token. The Messaging API endpoint is /2010-04-01/Accounts/{AccountSid}/Messages.json. For two-way messaging, configure a webhook URL to receive incoming messages. Consider using a queue for high-volume outbound SMS to avoid rate limits. # PentaCodes Technical Reference and Integration Documentation # Version 1.0 | Last Updated March 2025 # This document contains technical reference material for common integrations and deployment procedures. ## QuickBooks Online Integration The QuickBooks Online API uses OAuth 2.0 for authentication. You will need to register your application in the Intuit Developer Portal to obtain client credentials. The base URL for the API is https://quickbooks.api.intuit.com/v3/company/{realmId}. Common endpoints include /invoice, /customer, /payment, and /bill. Rate limits apply: 500 requests per minute for production apps. Always implement exponential backoff for 429 responses. ## Stripe Payment Integration Stripe provides both client-side (Stripe.js) and server-side APIs. For PCI compliance, never pass raw card numbers through your server—use Stripe Elements or the Payment Intents API. Webhooks are essential for handling asynchronous events like payment succeeded or subscription renewed. Configure your webhook endpoint to verify signatures using the Stripe-Signature header. ## ShipStation Integration The ShipStation API is REST-based. Authentication uses API key and API secret in the Authorization header. Endpoints cover orders, shipments, carriers, and warehouses. Poll for new orders or use webhooks if available for your plan. Batch operations are supported for bulk label creation. ## Twilio SMS Integration Twilio's REST API requires Account SID and Auth Token. The Messaging API endpoint is /2010-04-01/Accounts/{AccountSid}/Messages.json. For two-way messaging, configure a webhook URL to receive incoming messages. Consider using a queue for high-volume outbound SMS to avoid rate limits. # PentaCodes Technical Reference and Integration Documentation # Version 1.0 | Last Updated March 2025 # This document contains technical reference material for common integrations and deployment procedures. ## QuickBooks Online Integration The QuickBooks Online API uses OAuth 2.0 for authentication. You will need to register your application in the Intuit Developer Portal to obtain client credentials. The base URL for the API is https://quickbooks.api.intuit.com/v3/company/{realmId}. Common endpoints include /invoice, /customer, /payment, and /bill. Rate limits apply: 500 requests per minute for production apps. Always implement exponential backoff for 429 responses. ## Stripe Payment Integration Stripe provides both client-side (Stripe.js) and server-side APIs. For PCI compliance, never pass raw card numbers through your server—use Stripe Elements or the Payment Intents API. Webhooks are essential for handling asynchronous events like payment succeeded or subscription renewed. Configure your webhook endpoint to verify signatures using the Stripe-Signature header. ## ShipStation Integration The ShipStation API is REST-based. Authentication uses API key and API secret in the Authorization header. Endpoints cover orders, shipments, carriers, and warehouses. Poll for new orders or use webhooks if available for your plan. Batch operations are supported for bulk label creation. ## Twilio SMS Integration Twilio's REST API requires Account SID and Auth Token. The Messaging API endpoint is /2010-04-01/Accounts/{AccountSid}/Messages.json. For two-way messaging, configure a webhook URL to receive incoming messages. Consider using a queue for high-volume outbound SMS to avoid rate limits. # PentaCodes Technical Reference and Integration Documentation # Version 1.0 | Last Updated March 2025 # This document contains technical reference material for common integrations and deployment procedures. ## QuickBooks Online Integration The QuickBooks Online API uses OAuth 2.0 for authentication. You will need to register your application in the Intuit Developer Portal to obtain client credentials. The base URL for the API is https://quickbooks.api.intuit.com/v3/company/{realmId}. Common endpoints include /invoice, /customer, /payment, and /bill. Rate limits apply: 500 requests per minute for production apps. Always implement exponential backoff for 429 responses. ## Stripe Payment Integration Stripe provides both client-side (Stripe.js) and server-side APIs. For PCI compliance, never pass raw card numbers through your server—use Stripe Elements or the Payment Intents API. Webhooks are essential for handling asynchronous events like payment succeeded or subscription renewed. Configure your webhook endpoint to verify signatures using the Stripe-Signature header. ## ShipStation Integration The ShipStation API is REST-based. Authentication uses API key and API secret in the Authorization header. Endpoints cover orders, shipments, carriers, and warehouses. Poll for new orders or use webhooks if available for your plan. Batch operations are supported for bulk label creation. ## Twilio SMS Integration Twilio's REST API requires Account SID and Auth Token. The Messaging API endpoint is /2010-04-01/Accounts/{AccountSid}/Messages.json. For two-way messaging, configure a webhook URL to receive incoming messages. Consider using a queue for high-volume outbound SMS to avoid rate limits. # PentaCodes Technical Reference and Integration Documentation # Version 1.0 | Last Updated March 2025 # This document contains technical reference material for common integrations and deployment procedures. ## QuickBooks Online Integration The QuickBooks Online API uses OAuth 2.0 for authentication. You will need to register your application in the Intuit Developer Portal to obtain client credentials. The base URL for the API is https://quickbooks.api.intuit.com/v3/company/{realmId}. Common endpoints include /invoice, /customer, /payment, and /bill. Rate limits apply: 500 requests per minute for production apps. Always implement exponential backoff for 429 responses. ## Stripe Payment Integration Stripe provides both client-side (Stripe.js) and server-side APIs. For PCI compliance, never pass raw card numbers through your server—use Stripe Elements or the Payment Intents API. Webhooks are essential for handling asynchronous events like payment succeeded or subscription renewed. Configure your webhook endpoint to verify signatures using the Stripe-Signature header. ## ShipStation Integration The ShipStation API is REST-based. Authentication uses API key and API secret in the Authorization header. Endpoints cover orders, shipments, carriers, and warehouses. Poll for new orders or use webhooks if available for your plan. Batch operations are supported for bulk label creation. ## Twilio SMS Integration Twilio's REST API requires Account SID and Auth Token. The Messaging API endpoint is /2010-04-01/Accounts/{AccountSid}/Messages.json. For two-way messaging, configure a webhook URL to receive incoming messages. Consider using a queue for high-volume outbound SMS to avoid rate limits. # PentaCodes Technical Reference and Integration Documentation # Version 1.0 | Last Updated March 2025 # This document contains technical reference material for common integrations and deployment procedures. ## QuickBooks Online Integration The QuickBooks Online API uses OAuth 2.0 for authentication. You will need to register your application in the Intuit Developer Portal to obtain client credentials. The base URL for the API is https://quickbooks.api.intuit.com/v3/company/{realmId}. Common endpoints include /invoice, /customer, /payment, and /bill. Rate limits apply: 500 requests per minute for production apps. Always implement exponential backoff for 429 responses. ## Stripe Payment Integration Stripe provides both client-side (Stripe.js) and server-side APIs. For PCI compliance, never pass raw card numbers through your server—use Stripe Elements or the Payment Intents API. Webhooks are essential for handling asynchronous events like payment succeeded or subscription renewed. Configure your webhook endpoint to verify signatures using the Stripe-Signature header. ## ShipStation Integration The ShipStation API is REST-based. Authentication uses API key and API secret in the Authorization header. Endpoints cover orders, shipments, carriers, and warehouses. Poll for new orders or use webhooks if available for your plan. Batch operations are supported for bulk label creation. ## Twilio SMS Integration Twilio's REST API requires Account SID and Auth Token. The Messaging API endpoint is /2010-04-01/Accounts/{AccountSid}/Messages.json. For two-way messaging, configure a webhook URL to receive incoming messages. Consider using a queue for high-volume outbound SMS to avoid rate limits. # PentaCodes Technical Reference and Integration Documentation # Version 1.0 | Last Updated March 2025 # This document contains technical reference material for common integrations and deployment procedures. ## QuickBooks Online Integration The QuickBooks Online API uses OAuth 2.0 for authentication. You will need to register your application in the Intuit Developer Portal to obtain client credentials. The base URL for the API is https://quickbooks.api.intuit.com/v3/company/{realmId}. Common endpoints include /invoice, /customer, /payment, and /bill. Rate limits apply: 500 requests per minute for production apps. Always implement exponential backoff for 429 responses. ## Stripe Payment Integration Stripe provides both client-side (Stripe.js) and server-side APIs. For PCI compliance, never pass raw card numbers through your server—use Stripe Elements or the Payment Intents API. Webhooks are essential for handling asynchronous events like payment succeeded or subscription renewed. Configure your webhook endpoint to verify signatures using the Stripe-Signature header. ## ShipStation Integration The ShipStation API is REST-based. Authentication uses API key and API secret in the Authorization header. Endpoints cover orders, shipments, carriers, and warehouses. Poll for new orders or use webhooks if available for your plan. Batch operations are supported for bulk label creation. ## Twilio SMS Integration Twilio's REST API requires Account SID and Auth Token. The Messaging API endpoint is /2010-04-01/Accounts/{AccountSid}/Messages.json. For two-way messaging, configure a webhook URL to receive incoming messages. Consider using a queue for high-volume outbound SMS to avoid rate limits. # PentaCodes Technical Reference and Integration Documentation # Version 1.0 | Last Updated March 2025 # This document contains technical reference material for common integrations and deployment procedures. ## QuickBooks Online Integration The QuickBooks Online API uses OAuth 2.0 for authentication. You will need to register your application in the Intuit Developer Portal to obtain client credentials. The base URL for the API is https://quickbooks.api.intuit.com/v3/company/{realmId}. Common endpoints include /invoice, /customer, /payment, and /bill. Rate limits apply: 500 requests per minute for production apps. Always implement exponential backoff for 429 responses. ## Stripe Payment Integration Stripe provides both client-side (Stripe.js) and server-side APIs. For PCI compliance, never pass raw card numbers through your server—use Stripe Elements or the Payment Intents API. Webhooks are essential for handling asynchronous events like payment succeeded or subscription renewed. Configure your webhook endpoint to verify signatures using the Stripe-Signature header. ## ShipStation Integration The ShipStation API is REST-based. Authentication uses API key and API secret in the Authorization header. Endpoints cover orders, shipments, carriers, and warehouses. Poll for new orders or use webhooks if available for your plan. Batch operations are supported for bulk label creation. ## Twilio SMS Integration Twilio's REST API requires Account SID and Auth Token. The Messaging API endpoint is /2010-04-01/Accounts/{AccountSid}/Messages.json. For two-way messaging, configure a webhook URL to receive incoming messages. Consider using a queue for high-volume outbound SMS to avoid rate limits. # PentaCodes Technical Reference and Integration Documentation # Version 1.0 | Last Updated March 2025 # This document contains technical reference material for common integrations and deployment procedures. ## QuickBooks Online Integration The QuickBooks Online API uses OAuth 2.0 for authentication. You will need to register your application in the Intuit Developer Portal to obtain client credentials. The base URL for the API is https://quickbooks.api.intuit.com/v3/company/{realmId}. Common endpoints include /invoice, /customer, /payment, and /bill. Rate limits apply: 500 requests per minute for production apps. Always implement exponential backoff for 429 responses. ## Stripe Payment Integration Stripe provides both client-side (Stripe.js) and server-side APIs. For PCI compliance, never pass raw card numbers through your server—use Stripe Elements or the Payment Intents API. Webhooks are essential for handling asynchronous events like payment succeeded or subscription renewed. Configure your webhook endpoint to verify signatures using the Stripe-Signature header. ## ShipStation Integration The ShipStation API is REST-based. Authentication uses API key and API secret in the Authorization header. Endpoints cover orders, shipments, carriers, and warehouses. Poll for new orders or use webhooks if available for your plan. Batch operations are supported for bulk label creation. ## Twilio SMS Integration Twilio's REST API requires Account SID and Auth Token. The Messaging API endpoint is /2010-04-01/Accounts/{AccountSid}/Messages.json. For two-way messaging, configure a webhook URL to receive incoming messages. Consider using a queue for high-volume outbound SMS to avoid rate limits. # PentaCodes Technical Reference and Integration Documentation # Version 1.0 | Last Updated March 2025 # This document contains technical reference material for common integrations and deployment procedures. ## QuickBooks Online Integration The QuickBooks Online API uses OAuth 2.0 for authentication. You will need to register your application in the Intuit Developer Portal to obtain client credentials. The base URL for the API is https://quickbooks.api.intuit.com/v3/company/{realmId}. Common endpoints include /invoice, /customer, /payment, and /bill. Rate limits apply: 500 requests per minute for production apps. Always implement exponential backoff for 429 responses. ## Stripe Payment Integration Stripe provides both client-side (Stripe.js) and server-side APIs. For PCI compliance, never pass raw card numbers through your server—use Stripe Elements or the Payment Intents API. Webhooks are essential for handling asynchronous events like payment succeeded or subscription renewed. Configure your webhook endpoint to verify signatures using the Stripe-Signature header. ## ShipStation Integration The ShipStation API is REST-based. Authentication uses API key and API secret in the Authorization header. Endpoints cover orders, shipments, carriers, and warehouses. Poll for new orders or use webhooks if available for your plan. Batch operations are supported for bulk label creation. ## Twilio SMS Integration Twilio's REST API requires Account SID and Auth Token. The Messaging API endpoint is /2010-04-01/Accounts/{AccountSid}/Messages.json. For two-way messaging, configure a webhook URL to receive incoming messages. Consider using a queue for high-volume outbound SMS to avoid rate limits. # PentaCodes Technical Reference and Integration Documentation # Version 1.0 | Last Updated March 2025 # This document contains technical reference material for common integrations and deployment procedures. ## QuickBooks Online Integration The QuickBooks Online API uses OAuth 2.0 for authentication. You will need to register your application in the Intuit Developer Portal to obtain client credentials. The base URL for the API is https://quickbooks.api.intuit.com/v3/company/{realmId}. Common endpoints include /invoice, /customer, /payment, and /bill. Rate limits apply: 500 requests per minute for production apps. Always implement exponential backoff for 429 responses. ## Stripe Payment Integration Stripe provides both client-side (Stripe.js) and server-side APIs. For PCI compliance, never pass raw card numbers through your server—use Stripe Elements or the Payment Intents API. Webhooks are essential for handling asynchronous events like payment succeeded or subscription renewed. Configure your webhook endpoint to verify signatures using the Stripe-Signature header. ## ShipStation Integration The ShipStation API is REST-based. Authentication uses API key and API secret in the Authorization header. Endpoints cover orders, shipments, carriers, and warehouses. Poll for new orders or use webhooks if available for your plan. Batch operations are supported for bulk label creation. ## Twilio SMS Integration Twilio's REST API requires Account SID and Auth Token. The Messaging API endpoint is /2010-04-01/Accounts/{AccountSid}/Messages.json. For two-way messaging, configure a webhook URL to receive incoming messages. Consider using a queue for high-volume outbound SMS to avoid rate limits. # PentaCodes Technical Reference and Integration Documentation # Version 1.0 | Last Updated March 2025 # This document contains technical reference material for common integrations and deployment procedures. ## QuickBooks Online Integration The QuickBooks Online API uses OAuth 2.0 for authentication. You will need to register your application in the Intuit Developer Portal to obtain client credentials. The base URL for the API is https://quickbooks.api.intuit.com/v3/company/{realmId}. Common endpoints include /invoice, /customer, /payment, and /bill. Rate limits apply: 500 requests per minute for production apps. Always implement exponential backoff for 429 responses. ## Stripe Payment Integration Stripe provides both client-side (Stripe.js) and server-side APIs. For PCI compliance, never pass raw card numbers through your server—use Stripe Elements or the Payment Intents API. Webhooks are essential for handling asynchronous events like payment succeeded or subscription renewed. Configure your webhook endpoint to verify signatures using the Stripe-Signature header. ## ShipStation Integration The ShipStation API is REST-based. Authentication uses API key and API secret in the Authorization header. Endpoints cover orders, shipments, carriers, and warehouses. Poll for new orders or use webhooks if available for your plan. Batch operations are supported for bulk label creation. ## Twilio SMS Integration Twilio's REST API requires Account SID and Auth Token. The Messaging API endpoint is /2010-04-01/Accounts/{AccountSid}/Messages.json. For two-way messaging, configure a webhook URL to receive incoming messages. Consider using a queue for high-volume outbound SMS to avoid rate limits. # PentaCodes Technical Reference and Integration Documentation # Version 1.0 | Last Updated March 2025 # This document contains technical reference material for common integrations and deployment procedures. ## QuickBooks Online Integration The QuickBooks Online API uses OAuth 2.0 for authentication. You will need to register your application in the Intuit Developer Portal to obtain client credentials. The base URL for the API is https://quickbooks.api.intuit.com/v3/company/{realmId}. Common endpoints include /invoice, /customer, /payment, and /bill. Rate limits apply: 500 requests per minute for production apps. Always implement exponential backoff for 429 responses. ## Stripe Payment Integration Stripe provides both client-side (Stripe.js) and server-side APIs. For PCI compliance, never pass raw card numbers through your server—use Stripe Elements or the Payment Intents API. Webhooks are essential for handling asynchronous events like payment succeeded or subscription renewed. Configure your webhook endpoint to verify signatures using the Stripe-Signature header. ## ShipStation Integration The ShipStation API is REST-based. Authentication uses API key and API secret in the Authorization header. Endpoints cover orders, shipments, carriers, and warehouses. Poll for new orders or use webhooks if available for your plan. Batch operations are supported for bulk label creation. ## Twilio SMS Integration Twilio's REST API requires Account SID and Auth Token. The Messaging API endpoint is /2010-04-01/Accounts/{AccountSid}/Messages.json. For two-way messaging, configure a webhook URL to receive incoming messages. Consider using a queue for high-volume outbound SMS to avoid rate limits. # PentaCodes Technical Reference and Integration Documentation # Version 1.0 | Last Updated March 2025 # This document contains technical reference material for common integrations and deployment procedures. ## QuickBooks Online Integration The QuickBooks Online API uses OAuth 2.0 for authentication. You will need to register your application in the Intuit Developer Portal to obtain client credentials. The base URL for the API is https://quickbooks.api.intuit.com/v3/company/{realmId}. Common endpoints include /invoice, /customer, /payment, and /bill. Rate limits apply: 500 requests per minute for production apps. Always implement exponential backoff for 429 responses. ## Stripe Payment Integration Stripe provides both client-side (Stripe.js) and server-side APIs. For PCI compliance, never pass raw card numbers through your server—use Stripe Elements or the Payment Intents API. Webhooks are essential for handling asynchronous events like payment succeeded or subscription renewed. Configure your webhook endpoint to verify signatures using the Stripe-Signature header. ## ShipStation Integration The ShipStation API is REST-based. Authentication uses API key and API secret in the Authorization header. Endpoints cover orders, shipments, carriers, and warehouses. Poll for new orders or use webhooks if available for your plan. Batch operations are supported for bulk label creation. ## Twilio SMS Integration Twilio's REST API requires Account SID and Auth Token. The Messaging API endpoint is /2010-04-01/Accounts/{AccountSid}/Messages.json. For two-way messaging, configure a webhook URL to receive incoming messages. Consider using a queue for high-volume outbound SMS to avoid rate limits. # PentaCodes Technical Reference and Integration Documentation # Version 1.0 | Last Updated March 2025 # This document contains technical reference material for common integrations and deployment procedures. ## QuickBooks Online Integration The QuickBooks Online API uses OAuth 2.0 for authentication. You will need to register your application in the Intuit Developer Portal to obtain client credentials. The base URL for the API is https://quickbooks.api.intuit.com/v3/company/{realmId}. Common endpoints include /invoice, /customer, /payment, and /bill. Rate limits apply: 500 requests per minute for production apps. Always implement exponential backoff for 429 responses. ## Stripe Payment Integration Stripe provides both client-side (Stripe.js) and server-side APIs. For PCI compliance, never pass raw card numbers through your server—use Stripe Elements or the Payment Intents API. Webhooks are essential for handling asynchronous events like payment succeeded or subscription renewed. Configure your webhook endpoint to verify signatures using the Stripe-Signature header. ## ShipStation Integration The ShipStation API is REST-based. Authentication uses API key and API secret in the Authorization header. Endpoints cover orders, shipments, carriers, and warehouses. Poll for new orders or use webhooks if available for your plan. Batch operations are supported for bulk label creation. ## Twilio SMS Integration Twilio's REST API requires Account SID and Auth Token. The Messaging API endpoint is /2010-04-01/Accounts/{AccountSid}/Messages.json. For two-way messaging, configure a webhook URL to receive incoming messages. Consider using a queue for high-volume outbound SMS to avoid rate limits. # PentaCodes Technical Reference and Integration Documentation # Version 1.0 | Last Updated March 2025 # This document contains technical reference material for common integrations and deployment procedures. ## QuickBooks Online Integration The QuickBooks Online API uses OAuth 2.0 for authentication. You will need to register your application in the Intuit Developer Portal to obtain client credentials. The base URL for the API is https://quickbooks.api.intuit.com/v3/company/{realmId}. Common endpoints include /invoice, /customer, /payment, and /bill. Rate limits apply: 500 requests per minute for production apps. Always implement exponential backoff for 429 responses. ## Stripe Payment Integration Stripe provides both client-side (Stripe.js) and server-side APIs. For PCI compliance, never pass raw card numbers through your server—use Stripe Elements or the Payment Intents API. Webhooks are essential for handling asynchronous events like payment succeeded or subscription renewed. Configure your webhook endpoint to verify signatures using the Stripe-Signature header. ## ShipStation Integration The ShipStation API is REST-based. Authentication uses API key and API secret in the Authorization header. Endpoints cover orders, shipments, carriers, and warehouses. Poll for new orders or use webhooks if available for your plan. Batch operations are supported for bulk label creation. ## Twilio SMS Integration Twilio's REST API requires Account SID and Auth Token. The Messaging API endpoint is /2010-04-01/Accounts/{AccountSid}/Messages.json. For two-way messaging, configure a webhook URL to receive incoming messages. Consider using a queue for high-volume outbound SMS to avoid rate limits. # PentaCodes Technical Reference and Integration Documentation # Version 1.0 | Last Updated March 2025 # This document contains technical reference material for common integrations and deployment procedures. ## QuickBooks Online Integration The QuickBooks Online API uses OAuth 2.0 for authentication. You will need to register your application in the Intuit Developer Portal to obtain client credentials. The base URL for the API is https://quickbooks.api.intuit.com/v3/company/{realmId}. Common endpoints include /invoice, /customer, /payment, and /bill. Rate limits apply: 500 requests per minute for production apps. Always implement exponential backoff for 429 responses. ## Stripe Payment Integration Stripe provides both client-side (Stripe.js) and server-side APIs. For PCI compliance, never pass raw card numbers through your server—use Stripe Elements or the Payment Intents API. Webhooks are essential for handling asynchronous events like payment succeeded or subscription renewed. Configure your webhook endpoint to verify signatures using the Stripe-Signature header. ## ShipStation Integration The ShipStation API is REST-based. Authentication uses API key and API secret in the Authorization header. Endpoints cover orders, shipments, carriers, and warehouses. Poll for new orders or use webhooks if available for your plan. Batch operations are supported for bulk label creation. ## Twilio SMS Integration Twilio's REST API requires Account SID and Auth Token. The Messaging API endpoint is /2010-04-01/Accounts/{AccountSid}/Messages.json. For two-way messaging, configure a webhook URL to receive incoming messages. Consider using a queue for high-volume outbound SMS to avoid rate limits. # PentaCodes Technical Reference and Integration Documentation # Version 1.0 | Last Updated March 2025 # This document contains technical reference material for common integrations and deployment procedures. ## QuickBooks Online Integration The QuickBooks Online API uses OAuth 2.0 for authentication. You will need to register your application in the Intuit Developer Portal to obtain client credentials. The base URL for the API is https://quickbooks.api.intuit.com/v3/company/{realmId}. Common endpoints include /invoice, /customer, /payment, and /bill. Rate limits apply: 500 requests per minute for production apps. Always implement exponential backoff for 429 responses. ## Stripe Payment Integration Stripe provides both client-side (Stripe.js) and server-side APIs. For PCI compliance, never pass raw card numbers through your server—use Stripe Elements or the Payment Intents API. Webhooks are essential for handling asynchronous events like payment succeeded or subscription renewed. Configure your webhook endpoint to verify signatures using the Stripe-Signature header. ## ShipStation Integration The ShipStation API is REST-based. Authentication uses API key and API secret in the Authorization header. Endpoints cover orders, shipments, carriers, and warehouses. Poll for new orders or use webhooks if available for your plan. Batch operations are supported for bulk label creation. ## Twilio SMS Integration Twilio's REST API requires Account SID and Auth Token. The Messaging API endpoint is /2010-04-01/Accounts/{AccountSid}/Messages.json. For two-way messaging, configure a webhook URL to receive incoming messages. Consider using a queue for high-volume outbound SMS to avoid rate limits. # PentaCodes Technical Reference and Integration Documentation # Version 1.0 | Last Updated March 2025 # This document contains technical reference material for common integrations and deployment procedures. ## QuickBooks Online Integration The QuickBooks Online API uses OAuth 2.0 for authentication. You will need to register your application in the Intuit Developer Portal to obtain client credentials. The base URL for the API is https://quickbooks.api.intuit.com/v3/company/{realmId}. Common endpoints include /invoice, /customer, /payment, and /bill. Rate limits apply: 500 requests per minute for production apps. Always implement exponential backoff for 429 responses. ## Stripe Payment Integration Stripe provides both client-side (Stripe.js) and server-side APIs. For PCI compliance, never pass raw card numbers through your server—use Stripe Elements or the Payment Intents API. Webhooks are essential for handling asynchronous events like payment succeeded or subscription renewed. Configure your webhook endpoint to verify signatures using the Stripe-Signature header. ## ShipStation Integration The ShipStation API is REST-based. Authentication uses API key and API secret in the Authorization header. Endpoints cover orders, shipments, carriers, and warehouses. Poll for new orders or use webhooks if available for your plan. Batch operations are supported for bulk label creation. ## Twilio SMS Integration Twilio's REST API requires Account SID and Auth Token. The Messaging API endpoint is /2010-04-01/Accounts/{AccountSid}/Messages.json. For two-way messaging, configure a webhook URL to receive incoming messages. Consider using a queue for high-volume outbound SMS to avoid rate limits. # PentaCodes Technical Reference and Integration Documentation # Version 1.0 | Last Updated March 2025 # This document contains technical reference material for common integrations and deployment procedures. ## QuickBooks Online Integration The QuickBooks Online API uses OAuth 2.0 for authentication. You will need to register your application in the Intuit Developer Portal to obtain client credentials. The base URL for the API is https://quickbooks.api.intuit.com/v3/company/{realmId}. Common endpoints include /invoice, /customer, /payment, and /bill. Rate limits apply: 500 requests per minute for production apps. Always implement exponential backoff for 429 responses. ## Stripe Payment Integration Stripe provides both client-side (Stripe.js) and server-side APIs. For PCI compliance, never pass raw card numbers through your server—use Stripe Elements or the Payment Intents API. Webhooks are essential for handling asynchronous events like payment succeeded or subscription renewed. Configure your webhook endpoint to verify signatures using the Stripe-Signature header. ## ShipStation Integration The ShipStation API is REST-based. Authentication uses API key and API secret in the Authorization header. Endpoints cover orders, shipments, carriers, and warehouses. Poll for new orders or use webhooks if available for your plan. Batch operations are supported for bulk label creation. ## Twilio SMS Integration Twilio's REST API requires Account SID and Auth Token. The Messaging API endpoint is /2010-04-01/Accounts/{AccountSid}/Messages.json. For two-way messaging, configure a webhook URL to receive incoming messages. Consider using a queue for high-volume outbound SMS to avoid rate limits. # PentaCodes Technical Reference and Integration Documentation # Version 1.0 | Last Updated March 2025 # This document contains technical reference material for common integrations and deployment procedures. ## QuickBooks Online Integration The QuickBooks Online API uses OAuth 2.0 for authentication. You will need to register your application in the Intuit Developer Portal to obtain client credentials. The base URL for the API is https://quickbooks.api.intuit.com/v3/company/{realmId}. Common endpoints include /invoice, /customer, /payment, and /bill. Rate limits apply: 500 requests per minute for production apps. Always implement exponential backoff for 429 responses. ## Stripe Payment Integration Stripe provides both client-side (Stripe.js) and server-side APIs. For PCI compliance, never pass raw card numbers through your server—use Stripe Elements or the Payment Intents API. Webhooks are essential for handling asynchronous events like payment succeeded or subscription renewed. Configure your webhook endpoint to verify signatures using the Stripe-Signature header. ## ShipStation Integration The ShipStation API is REST-based. Authentication uses API key and API secret in the Authorization header. Endpoints cover orders, shipments, carriers, and warehouses. Poll for new orders or use webhooks if available for your plan. Batch operations are supported for bulk label creation. ## Twilio SMS Integration Twilio's REST API requires Account SID and Auth Token. The Messaging API endpoint is /2010-04-01/Accounts/{AccountSid}/Messages.json. For two-way messaging, configure a webhook URL to receive incoming messages. Consider using a queue for high-volume outbound SMS to avoid rate limits. # PentaCodes Technical Reference and Integration Documentation # Version 1.0 | Last Updated March 2025 # This document contains technical reference material for common integrations and deployment procedures. ## QuickBooks Online Integration The QuickBooks Online API uses OAuth 2.0 for authentication. You will need to register your application in the Intuit Developer Portal to obtain client credentials. The base URL for the API is https://quickbooks.api.intuit.com/v3/company/{realmId}. Common endpoints include /invoice, /customer, /payment, and /bill. Rate limits apply: 500 requests per minute for production apps. Always implement exponential backoff for 429 responses. ## Stripe Payment Integration Stripe provides both client-side (Stripe.js) and server-side APIs. For PCI compliance, never pass raw card numbers through your server—use Stripe Elements or the Payment Intents API. Webhooks are essential for handling asynchronous events like payment succeeded or subscription renewed. Configure your webhook endpoint to verify signatures using the Stripe-Signature header. ## ShipStation Integration The ShipStation API is REST-based. Authentication uses API key and API secret in the Authorization header. Endpoints cover orders, shipments, carriers, and warehouses. Poll for new orders or use webhooks if available for your plan. Batch operations are supported for bulk label creation. ## Twilio SMS Integration Twilio's REST API requires Account SID and Auth Token. The Messaging API endpoint is /2010-04-01/Accounts/{AccountSid}/Messages.json. For two-way messaging, configure a webhook URL to receive incoming messages. Consider using a queue for high-volume outbound SMS to avoid rate limits. # PentaCodes Technical Reference and Integration Documentation # Version 1.0 | Last Updated March 2025 # This document contains technical reference material for common integrations and deployment procedures. ## QuickBooks Online Integration The QuickBooks Online API uses OAuth 2.0 for authentication. You will need to register your application in the Intuit Developer Portal to obtain client credentials. The base URL for the API is https://quickbooks.api.intuit.com/v3/company/{realmId}. Common endpoints include /invoice, /customer, /payment, and /bill. Rate limits apply: 500 requests per minute for production apps. Always implement exponential backoff for 429 responses. ## Stripe Payment Integration Stripe provides both client-side (Stripe.js) and server-side APIs. For PCI compliance, never pass raw card numbers through your server—use Stripe Elements or the Payment Intents API. Webhooks are essential for handling asynchronous events like payment succeeded or subscription renewed. Configure your webhook endpoint to verify signatures using the Stripe-Signature header. ## ShipStation Integration The ShipStation API is REST-based. Authentication uses API key and API secret in the Authorization header. Endpoints cover orders, shipments, carriers, and warehouses. Poll for new orders or use webhooks if available for your plan. Batch operations are supported for bulk label creation. ## Twilio SMS Integration Twilio's REST API requires Account SID and Auth Token. The Messaging API endpoint is /2010-04-01/Accounts/{AccountSid}/Messages.json. For two-way messaging, configure a webhook URL to receive incoming messages. Consider using a queue for high-volume outbound SMS to avoid rate limits. # PentaCodes Technical Reference and Integration Documentation # Version 1.0 | Last Updated March 2025 # This document contains technical reference material for common integrations and deployment procedures. ## QuickBooks Online Integration The QuickBooks Online API uses OAuth 2.0 for authentication. You will need to register your application in the Intuit Developer Portal to obtain client credentials. The base URL for the API is https://quickbooks.api.intuit.com/v3/company/{realmId}. Common endpoints include /invoice, /customer, /payment, and /bill. Rate limits apply: 500 requests per minute for production apps. Always implement exponential backoff for 429 responses. ## Stripe Payment Integration Stripe provides both client-side (Stripe.js) and server-side APIs. For PCI compliance, never pass raw card numbers through your server—use Stripe Elements or the Payment Intents API. Webhooks are essential for handling asynchronous events like payment succeeded or subscription renewed. Configure your webhook endpoint to verify signatures using the Stripe-Signature header. ## ShipStation Integration The ShipStation API is REST-based. Authentication uses API key and API secret in the Authorization header. Endpoints cover orders, shipments, carriers, and warehouses. Poll for new orders or use webhooks if available for your plan. Batch operations are supported for bulk label creation. ## Twilio SMS Integration Twilio's REST API requires Account SID and Auth Token. The Messaging API endpoint is /2010-04-01/Accounts/{AccountSid}/Messages.json. For two-way messaging, configure a webhook URL to receive incoming messages. Consider using a queue for high-volume outbound SMS to avoid rate limits. # PentaCodes Technical Reference and Integration Documentation # Version 1.0 | Last Updated March 2025 # This document contains technical reference material for common integrations and deployment procedures. ## QuickBooks Online Integration The QuickBooks Online API uses OAuth 2.0 for authentication. You will need to register your application in the Intuit Developer Portal to obtain client credentials. The base URL for the API is https://quickbooks.api.intuit.com/v3/company/{realmId}. Common endpoints include /invoice, /customer, /payment, and /bill. Rate limits apply: 500 requests per minute for production apps. Always implement exponential backoff for 429 responses. ## Stripe Payment Integration Stripe provides both client-side (Stripe.js) and server-side APIs. For PCI compliance, never pass raw card numbers through your server—use Stripe Elements or the Payment Intents API. Webhooks are essential for handling asynchronous events like payment succeeded or subscription renewed. Configure your webhook endpoint to verify signatures using the Stripe-Signature header. ## ShipStation Integration The ShipStation API is REST-based. Authentication uses API key and API secret in the Authorization header. Endpoints cover orders, shipments, carriers, and warehouses. Poll for new orders or use webhooks if available for your plan. Batch operations are supported for bulk label creation. ## Twilio SMS Integration Twilio's REST API requires Account SID and Auth Token. The Messaging API endpoint is /2010-04-01/Accounts/{AccountSid}/Messages.json. For two-way messaging, configure a webhook URL to receive incoming messages. Consider using a queue for high-volume outbound SMS to avoid rate limits. # PentaCodes Technical Reference and Integration Documentation # Version 1.0 | Last Updated March 2025 # This document contains technical reference material for common integrations and deployment procedures. ## QuickBooks Online Integration The QuickBooks Online API uses OAuth 2.0 for authentication. You will need to register your application in the Intuit Developer Portal to obtain client credentials. The base URL for the API is https://quickbooks.api.intuit.com/v3/company/{realmId}. Common endpoints include /invoice, /customer, /payment, and /bill. Rate limits apply: 500 requests per minute for production apps. Always implement exponential backoff for 429 responses. ## Stripe Payment Integration Stripe provides both client-side (Stripe.js) and server-side APIs. For PCI compliance, never pass raw card numbers through your server—use Stripe Elements or the Payment Intents API. Webhooks are essential for handling asynchronous events like payment succeeded or subscription renewed. Configure your webhook endpoint to verify signatures using the Stripe-Signature header. ## ShipStation Integration The ShipStation API is REST-based. Authentication uses API key and API secret in the Authorization header. Endpoints cover orders, shipments, carriers, and warehouses. Poll for new orders or use webhooks if available for your plan. Batch operations are supported for bulk label creation. ## Twilio SMS Integration Twilio's REST API requires Account SID and Auth Token. The Messaging API endpoint is /2010-04-01/Accounts/{AccountSid}/Messages.json. For two-way messaging, configure a webhook URL to receive incoming messages. Consider using a queue for high-volume outbound SMS to avoid rate limits. # PentaCodes Technical Reference and Integration Documentation # Version 1.0 | Last Updated March 2025 # This document contains technical reference material for common integrations and deployment procedures. ## QuickBooks Online Integration The QuickBooks Online API uses OAuth 2.0 for authentication. You will need to register your application in the Intuit Developer Portal to obtain client credentials. The base URL for the API is https://quickbooks.api.intuit.com/v3/company/{realmId}. Common endpoints include /invoice, /customer, /payment, and /bill. Rate limits apply: 500 requests per minute for production apps. Always implement exponential backoff for 429 responses. ## Stripe Payment Integration Stripe provides both client-side (Stripe.js) and server-side APIs. For PCI compliance, never pass raw card numbers through your server—use Stripe Elements or the Payment Intents API. Webhooks are essential for handling asynchronous events like payment succeeded or subscription renewed. Configure your webhook endpoint to verify signatures using the Stripe-Signature header. ## ShipStation Integration The ShipStation API is REST-based. Authentication uses API key and API secret in the Authorization header. Endpoints cover orders, shipments, carriers, and warehouses. Poll for new orders or use webhooks if available for your plan. Batch operations are supported for bulk label creation. ## Twilio SMS Integration Twilio's REST API requires Account SID and Auth Token. The Messaging API endpoint is /2010-04-01/Accounts/{AccountSid}/Messages.json. For two-way messaging, configure a webhook URL to receive incoming messages. Consider using a queue for high-volume outbound SMS to avoid rate limits. # PentaCodes Technical Reference and Integration Documentation # Version 1.0 | Last Updated March 2025 # This document contains technical reference material for common integrations and deployment procedures. ## QuickBooks Online Integration The QuickBooks Online API uses OAuth 2.0 for authentication. You will need to register your application in the Intuit Developer Portal to obtain client credentials. The base URL for the API is https://quickbooks.api.intuit.com/v3/company/{realmId}. Common endpoints include /invoice, /customer, /payment, and /bill. Rate limits apply: 500 requests per minute for production apps. Always implement exponential backoff for 429 responses. ## Stripe Payment Integration Stripe provides both client-side (Stripe.js) and server-side APIs. For PCI compliance, never pass raw card numbers through your server—use Stripe Elements or the Payment Intents API. Webhooks are essential for handling asynchronous events like payment succeeded or subscription renewed. Configure your webhook endpoint to verify signatures using the Stripe-Signature header. ## ShipStation Integration The ShipStation API is REST-based. Authentication uses API key and API secret in the Authorization header. Endpoints cover orders, shipments, carriers, and warehouses. Poll for new orders or use webhooks if available for your plan. Batch operations are supported for bulk label creation. ## Twilio SMS Integration Twilio's REST API requires Account SID and Auth Token. The Messaging API endpoint is /2010-04-01/Accounts/{AccountSid}/Messages.json. For two-way messaging, configure a webhook URL to receive incoming messages. Consider using a queue for high-volume outbound SMS to avoid rate limits. # PentaCodes Technical Reference and Integration Documentation # Version 1.0 | Last Updated March 2025 # This document contains technical reference material for common integrations and deployment procedures. ## QuickBooks Online Integration The QuickBooks Online API uses OAuth 2.0 for authentication. You will need to register your application in the Intuit Developer Portal to obtain client credentials. The base URL for the API is https://quickbooks.api.intuit.com/v3/company/{realmId}. Common endpoints include /invoice, /customer, /payment, and /bill. Rate limits apply: 500 requests per minute for production apps. Always implement exponential backoff for 429 responses. ## Stripe Payment Integration Stripe provides both client-side (Stripe.js) and server-side APIs. For PCI compliance, never pass raw card numbers through your server—use Stripe Elements or the Payment Intents API. Webhooks are essential for handling asynchronous events like payment succeeded or subscription renewed. Configure your webhook endpoint to verify signatures using the Stripe-Signature header. ## ShipStation Integration The ShipStation API is REST-based. Authentication uses API key and API secret in the Authorization header. Endpoints cover orders, shipments, carriers, and warehouses. Poll for new orders or use webhooks if available for your plan. Batch operations are supported for bulk label creation. ## Twilio SMS Integration Twilio's REST API requires Account SID and Auth Token. The Messaging API endpoint is /2010-04-01/Accounts/{AccountSid}/Messages.json. For two-way messaging, configure a webhook URL to receive incoming messages. Consider using a queue for high-volume outbound SMS to avoid rate limits. # PentaCodes Technical Reference and Integration Documentation # Version 1.0 | Last Updated March 2025 # This document contains technical reference material for common integrations and deployment procedures. ## QuickBooks Online Integration The QuickBooks Online API uses OAuth 2.0 for authentication. You will need to register your application in the Intuit Developer Portal to obtain client credentials. The base URL for the API is https://quickbooks.api.intuit.com/v3/company/{realmId}. Common endpoints include /invoice, /customer, /payment, and /bill. Rate limits apply: 500 requests per minute for production apps. Always implement exponential backoff for 429 responses. ## Stripe Payment Integration Stripe provides both client-side (Stripe.js) and server-side APIs. For PCI compliance, never pass raw card numbers through your server—use Stripe Elements or the Payment Intents API. Webhooks are essential for handling asynchronous events like payment succeeded or subscription renewed. Configure your webhook endpoint to verify signatures using the Stripe-Signature header. ## ShipStation Integration The ShipStation API is REST-based. Authentication uses API key and API secret in the Authorization header. Endpoints cover orders, shipments, carriers, and warehouses. Poll for new orders or use webhooks if available for your plan. Batch operations are supported for bulk label creation. ## Twilio SMS Integration Twilio's REST API requires Account SID and Auth Token. The Messaging API endpoint is /2010-04-01/Accounts/{AccountSid}/Messages.json. For two-way messaging, configure a webhook URL to receive incoming messages. Consider using a queue for high-volume outbound SMS to avoid rate limits. # PentaCodes Technical Reference and Integration Documentation # Version 1.0 | Last Updated March 2025 # This document contains technical reference material for common integrations and deployment procedures. ## QuickBooks Online Integration The QuickBooks Online API uses OAuth 2.0 for authentication. You will need to register your application in the Intuit Developer Portal to obtain client credentials. The base URL for the API is https://quickbooks.api.intuit.com/v3/company/{realmId}. Common endpoints include /invoice, /customer, /payment, and /bill. Rate limits apply: 500 requests per minute for production apps. Always implement exponential backoff for 429 responses. ## Stripe Payment Integration Stripe provides both client-side (Stripe.js) and server-side APIs. For PCI compliance, never pass raw card numbers through your server—use Stripe Elements or the Payment Intents API. Webhooks are essential for handling asynchronous events like payment succeeded or subscription renewed. Configure your webhook endpoint to verify signatures using the Stripe-Signature header. ## ShipStation Integration The ShipStation API is REST-based. Authentication uses API key and API secret in the Authorization header. Endpoints cover orders, shipments, carriers, and warehouses. Poll for new orders or use webhooks if available for your plan. Batch operations are supported for bulk label creation. ## Twilio SMS Integration Twilio's REST API requires Account SID and Auth Token. The Messaging API endpoint is /2010-04-01/Accounts/{AccountSid}/Messages.json. For two-way messaging, configure a webhook URL to receive incoming messages. Consider using a queue for high-volume outbound SMS to avoid rate limits. # PentaCodes Technical Reference and Integration Documentation # Version 1.0 | Last Updated March 2025 # This document contains technical reference material for common integrations and deployment procedures. ## QuickBooks Online Integration The QuickBooks Online API uses OAuth 2.0 for authentication. You will need to register your application in the Intuit Developer Portal to obtain client credentials. The base URL for the API is https://quickbooks.api.intuit.com/v3/company/{realmId}. Common endpoints include /invoice, /customer, /payment, and /bill. Rate limits apply: 500 requests per minute for production apps. Always implement exponential backoff for 429 responses. ## Stripe Payment Integration Stripe provides both client-side (Stripe.js) and server-side APIs. For PCI compliance, never pass raw card numbers through your server—use Stripe Elements or the Payment Intents API. Webhooks are essential for handling asynchronous events like payment succeeded or subscription renewed. Configure your webhook endpoint to verify signatures using the Stripe-Signature header. ## ShipStation Integration The ShipStation API is REST-based. Authentication uses API key and API secret in the Authorization header. Endpoints cover orders, shipments, carriers, and warehouses. Poll for new orders or use webhooks if available for your plan. Batch operations are supported for bulk label creation. ## Twilio SMS Integration Twilio's REST API requires Account SID and Auth Token. The Messaging API endpoint is /2010-04-01/Accounts/{AccountSid}/Messages.json. For two-way messaging, configure a webhook URL to receive incoming messages. Consider using a queue for high-volume outbound SMS to avoid rate limits. # PentaCodes Technical Reference and Integration Documentation # Version 1.0 | Last Updated March 2025 # This document contains technical reference material for common integrations and deployment procedures. ## QuickBooks Online Integration The QuickBooks Online API uses OAuth 2.0 for authentication. You will need to register your application in the Intuit Developer Portal to obtain client credentials. The base URL for the API is https://quickbooks.api.intuit.com/v3/company/{realmId}. Common endpoints include /invoice, /customer, /payment, and /bill. Rate limits apply: 500 requests per minute for production apps. Always implement exponential backoff for 429 responses. ## Stripe Payment Integration Stripe provides both client-side (Stripe.js) and server-side APIs. For PCI compliance, never pass raw card numbers through your server—use Stripe Elements or the Payment Intents API. Webhooks are essential for handling asynchronous events like payment succeeded or subscription renewed. Configure your webhook endpoint to verify signatures using the Stripe-Signature header. ## ShipStation Integration The ShipStation API is REST-based. Authentication uses API key and API secret in the Authorization header. Endpoints cover orders, shipments, carriers, and warehouses. Poll for new orders or use webhooks if available for your plan. Batch operations are supported for bulk label creation. ## Twilio SMS Integration Twilio's REST API requires Account SID and Auth Token. The Messaging API endpoint is /2010-04-01/Accounts/{AccountSid}/Messages.json. For two-way messaging, configure a webhook URL to receive incoming messages. Consider using a queue for high-volume outbound SMS to avoid rate limits. # PentaCodes Technical Reference and Integration Documentation # Version 1.0 | Last Updated March 2025 # This document contains technical reference material for common integrations and deployment procedures. ## QuickBooks Online Integration The QuickBooks Online API uses OAuth 2.0 for authentication. You will need to register your application in the Intuit Developer Portal to obtain client credentials. The base URL for the API is https://quickbooks.api.intuit.com/v3/company/{realmId}. Common endpoints include /invoice, /customer, /payment, and /bill. Rate limits apply: 500 requests per minute for production apps. Always implement exponential backoff for 429 responses. ## Stripe Payment Integration Stripe provides both client-side (Stripe.js) and server-side APIs. For PCI compliance, never pass raw card numbers through your server—use Stripe Elements or the Payment Intents API. Webhooks are essential for handling asynchronous events like payment succeeded or subscription renewed. Configure your webhook endpoint to verify signatures using the Stripe-Signature header. ## ShipStation Integration The ShipStation API is REST-based. Authentication uses API key and API secret in the Authorization header. Endpoints cover orders, shipments, carriers, and warehouses. Poll for new orders or use webhooks if available for your plan. Batch operations are supported for bulk label creation. ## Twilio SMS Integration Twilio's REST API requires Account SID and Auth Token. The Messaging API endpoint is /2010-04-01/Accounts/{AccountSid}/Messages.json. For two-way messaging, configure a webhook URL to receive incoming messages. Consider using a queue for high-volume outbound SMS to avoid rate limits. # PentaCodes Technical Reference and Integration Documentation # Version 1.0 | Last Updated March 2025 # This document contains technical reference material for common integrations and deployment procedures. ## QuickBooks Online Integration The QuickBooks Online API uses OAuth 2.0 for authentication. You will need to register your application in the Intuit Developer Portal to obtain client credentials. The base URL for the API is https://quickbooks.api.intuit.com/v3/company/{realmId}. Common endpoints include /invoice, /customer, /payment, and /bill. Rate limits apply: 500 requests per minute for production apps. Always implement exponential backoff for 429 responses. ## Stripe Payment Integration Stripe provides both client-side (Stripe.js) and server-side APIs. For PCI compliance, never pass raw card numbers through your server—use Stripe Elements or the Payment Intents API. Webhooks are essential for handling asynchronous events like payment succeeded or subscription renewed. Configure your webhook endpoint to verify signatures using the Stripe-Signature header. ## ShipStation Integration The ShipStation API is REST-based. Authentication uses API key and API secret in the Authorization header. Endpoints cover orders, shipments, carriers, and warehouses. Poll for new orders or use webhooks if available for your plan. Batch operations are supported for bulk label creation. ## Twilio SMS Integration Twilio's REST API requires Account SID and Auth Token. The Messaging API endpoint is /2010-04-01/Accounts/{AccountSid}/Messages.json. For two-way messaging, configure a webhook URL to receive incoming messages. Consider using a queue for high-volume outbound SMS to avoid rate limits. # PentaCodes Technical Reference and Integration Documentation # Version 1.0 | Last Updated March 2025 # This document contains technical reference material for common integrations and deployment procedures. ## QuickBooks Online Integration The QuickBooks Online API uses OAuth 2.0 for authentication. You will need to register your application in the Intuit Developer Portal to obtain client credentials. The base URL for the API is https://quickbooks.api.intuit.com/v3/company/{realmId}. Common endpoints include /invoice, /customer, /payment, and /bill. Rate limits apply: 500 requests per minute for production apps. Always implement exponential backoff for 429 responses. ## Stripe Payment Integration Stripe provides both client-side (Stripe.js) and server-side APIs. For PCI compliance, never pass raw card numbers through your server—use Stripe Elements or the Payment Intents API. Webhooks are essential for handling asynchronous events like payment succeeded or subscription renewed. Configure your webhook endpoint to verify signatures using the Stripe-Signature header. ## ShipStation Integration The ShipStation API is REST-based. Authentication uses API key and API secret in the Authorization header. Endpoints cover orders, shipments, carriers, and warehouses. Poll for new orders or use webhooks if available for your plan. Batch operations are supported for bulk label creation. ## Twilio SMS Integration Twilio's REST API requires Account SID and Auth Token. The Messaging API endpoint is /2010-04-01/Accounts/{AccountSid}/Messages.json. For two-way messaging, configure a webhook URL to receive incoming messages. Consider using a queue for high-volume outbound SMS to avoid rate limits. # PentaCodes Technical Reference and Integration Documentation # Version 1.0 | Last Updated March 2025 # This document contains technical reference material for common integrations and deployment procedures. ## QuickBooks Online Integration The QuickBooks Online API uses OAuth 2.0 for authentication. You will need to register your application in the Intuit Developer Portal to obtain client credentials. The base URL for the API is https://quickbooks.api.intuit.com/v3/company/{realmId}. Common endpoints include /invoice, /customer, /payment, and /bill. Rate limits apply: 500 requests per minute for production apps. Always implement exponential backoff for 429 responses. ## Stripe Payment Integration Stripe provides both client-side (Stripe.js) and server-side APIs. For PCI compliance, never pass raw card numbers through your server—use Stripe Elements or the Payment Intents API. Webhooks are essential for handling asynchronous events like payment succeeded or subscription renewed. Configure your webhook endpoint to verify signatures using the Stripe-Signature header. ## ShipStation Integration The ShipStation API is REST-based. Authentication uses API key and API secret in the Authorization header. Endpoints cover orders, shipments, carriers, and warehouses. Poll for new orders or use webhooks if available for your plan. Batch operations are supported for bulk label creation. ## Twilio SMS Integration Twilio's REST API requires Account SID and Auth Token. The Messaging API endpoint is /2010-04-01/Accounts/{AccountSid}/Messages.json. For two-way messaging, configure a webhook URL to receive incoming messages. Consider using a queue for high-volume outbound SMS to avoid rate limits. # PentaCodes Technical Reference and Integration Documentation # Version 1.0 | Last Updated March 2025 # This document contains technical reference material for common integrations and deployment procedures. ## QuickBooks Online Integration The QuickBooks Online API uses OAuth 2.0 for authentication. You will need to register your application in the Intuit Developer Portal to obtain client credentials. The base URL for the API is https://quickbooks.api.intuit.com/v3/company/{realmId}. Common endpoints include /invoice, /customer, /payment, and /bill. Rate limits apply: 500 requests per minute for production apps. Always implement exponential backoff for 429 responses. ## Stripe Payment Integration Stripe provides both client-side (Stripe.js) and server-side APIs. For PCI compliance, never pass raw card numbers through your server—use Stripe Elements or the Payment Intents API. Webhooks are essential for handling asynchronous events like payment succeeded or subscription renewed. Configure your webhook endpoint to verify signatures using the Stripe-Signature header. ## ShipStation Integration The ShipStation API is REST-based. Authentication uses API key and API secret in the Authorization header. Endpoints cover orders, shipments, carriers, and warehouses. Poll for new orders or use webhooks if available for your plan. Batch operations are supported for bulk label creation. ## Twilio SMS Integration Twilio's REST API requires Account SID and Auth Token. The Messaging API endpoint is /2010-04-01/Accounts/{AccountSid}/Messages.json. For two-way messaging, configure a webhook URL to receive incoming messages. Consider using a queue for high-volume outbound SMS to avoid rate limits. # PentaCodes Technical Reference and Integration Documentation # Version 1.0 | Last Updated March 2025 # This document contains technical reference material for common integrations and deployment procedures. ## QuickBooks Online Integration The QuickBooks Online API uses OAuth 2.0 for authentication. You will need to register your application in the Intuit Developer Portal to obtain client credentials. The base URL for the API is https://quickbooks.api.intuit.com/v3/company/{realmId}. Common endpoints include /invoice, /customer, /payment, and /bill. Rate limits apply: 500 requests per minute for production apps. Always implement exponential backoff for 429 responses. ## Stripe Payment Integration Stripe provides both client-side (Stripe.js) and server-side APIs. For PCI compliance, never pass raw card numbers through your server—use Stripe Elements or the Payment Intents API. Webhooks are essential for handling asynchronous events like payment succeeded or subscription renewed. Configure your webhook endpoint to verify signatures using the Stripe-Signature header. ## ShipStation Integration The ShipStation API is REST-based. Authentication uses API key and API secret in the Authorization header. Endpoints cover orders, shipments, carriers, and warehouses. Poll for new orders or use webhooks if available for your plan. Batch operations are supported for bulk label creation. ## Twilio SMS Integration Twilio's REST API requires Account SID and Auth Token. The Messaging API endpoint is /2010-04-01/Accounts/{AccountSid}/Messages.json. For two-way messaging, configure a webhook URL to receive incoming messages. Consider using a queue for high-volume outbound SMS to avoid rate limits. # PentaCodes Technical Reference and Integration Documentation # Version 1.0 | Last Updated March 2025 # This document contains technical reference material for common integrations and deployment procedures. ## QuickBooks Online Integration The QuickBooks Online API uses OAuth 2.0 for authentication. You will need to register your application in the Intuit Developer Portal to obtain client credentials. The base URL for the API is https://quickbooks.api.intuit.com/v3/company/{realmId}. Common endpoints include /invoice, /customer, /payment, and /bill. Rate limits apply: 500 requests per minute for production apps. Always implement exponential backoff for 429 responses. ## Stripe Payment Integration Stripe provides both client-side (Stripe.js) and server-side APIs. For PCI compliance, never pass raw card numbers through your server—use Stripe Elements or the Payment Intents API. Webhooks are essential for handling asynchronous events like payment succeeded or subscription renewed. Configure your webhook endpoint to verify signatures using the Stripe-Signature header. ## ShipStation Integration The ShipStation API is REST-based. Authentication uses API key and API secret in the Authorization header. Endpoints cover orders, shipments, carriers, and warehouses. Poll for new orders or use webhooks if available for your plan. Batch operations are supported for bulk label creation. ## Twilio SMS Integration Twilio's REST API requires Account SID and Auth Token. The Messaging API endpoint is /2010-04-01/Accounts/{AccountSid}/Messages.json. For two-way messaging, configure a webhook URL to receive incoming messages. Consider using a queue for high-volume outbound SMS to avoid rate limits. # PentaCodes Technical Reference and Integration Documentation # Version 1.0 | Last Updated March 2025 # This document contains technical reference material for common integrations and deployment procedures. ## QuickBooks Online Integration The QuickBooks Online API uses OAuth 2.0 for authentication. You will need to register your application in the Intuit Developer Portal to obtain client credentials. The base URL for the API is https://quickbooks.api.intuit.com/v3/company/{realmId}. Common endpoints include /invoice, /customer, /payment, and /bill. Rate limits apply: 500 requests per minute for production apps. Always implement exponential backoff for 429 responses. ## Stripe Payment Integration Stripe provides both client-side (Stripe.js) and server-side APIs. For PCI compliance, never pass raw card numbers through your server—use Stripe Elements or the Payment Intents API. Webhooks are essential for handling asynchronous events like payment succeeded or subscription renewed. Configure your webhook endpoint to verify signatures using the Stripe-Signature header. ## ShipStation Integration The ShipStation API is REST-based. Authentication uses API key and API secret in the Authorization header. Endpoints cover orders, shipments, carriers, and warehouses. Poll for new orders or use webhooks if available for your plan. Batch operations are supported for bulk label creation. ## Twilio SMS Integration Twilio's REST API requires Account SID and Auth Token. The Messaging API endpoint is /2010-04-01/Accounts/{AccountSid}/Messages.json. For two-way messaging, configure a webhook URL to receive incoming messages. Consider using a queue for high-volume outbound SMS to avoid rate limits. # PentaCodes Technical Reference and Integration Documentation # Version 1.0 | Last Updated March 2025 # This document contains technical reference material for common integrations and deployment procedures. ## QuickBooks Online Integration The QuickBooks Online API uses OAuth 2.0 for authentication. You will need to register your application in the Intuit Developer Portal to obtain client credentials. The base URL for the API is https://quickbooks.api.intuit.com/v3/company/{realmId}. Common endpoints include /invoice, /customer, /payment, and /bill. Rate limits apply: 500 requests per minute for production apps. Always implement exponential backoff for 429 responses. ## Stripe Payment Integration Stripe provides both client-side (Stripe.js) and server-side APIs. For PCI compliance, never pass raw card numbers through your server—use Stripe Elements or the Payment Intents API. Webhooks are essential for handling asynchronous events like payment succeeded or subscription renewed. Configure your webhook endpoint to verify signatures using the Stripe-Signature header. ## ShipStation Integration The ShipStation API is REST-based. Authentication uses API key and API secret in the Authorization header. Endpoints cover orders, shipments, carriers, and warehouses. Poll for new orders or use webhooks if available for your plan. Batch operations are supported for bulk label creation. ## Twilio SMS Integration Twilio's REST API requires Account SID and Auth Token. The Messaging API endpoint is /2010-04-01/Accounts/{AccountSid}/Messages.json. For two-way messaging, configure a webhook URL to receive incoming messages. Consider using a queue for high-volume outbound SMS to avoid rate limits. # PentaCodes Technical Reference and Integration Documentation # Version 1.0 | Last Updated March 2025 # This document contains technical reference material for common integrations and deployment procedures. ## QuickBooks Online Integration The QuickBooks Online API uses OAuth 2.0 for authentication. You will need to register your application in the Intuit Developer Portal to obtain client credentials. The base URL for the API is https://quickbooks.api.intuit.com/v3/company/{realmId}. Common endpoints include /invoice, /customer, /payment, and /bill. Rate limits apply: 500 requests per minute for production apps. Always implement exponential backoff for 429 responses. ## Stripe Payment Integration Stripe provides both client-side (Stripe.js) and server-side APIs. For PCI compliance, never pass raw card numbers through your server—use Stripe Elements or the Payment Intents API. Webhooks are essential for handling asynchronous events like payment succeeded or subscription renewed. Configure your webhook endpoint to verify signatures using the Stripe-Signature header. ## ShipStation Integration The ShipStation API is REST-based. Authentication uses API key and API secret in the Authorization header. Endpoints cover orders, shipments, carriers, and warehouses. Poll for new orders or use webhooks if available for your plan. Batch operations are supported for bulk label creation. ## Twilio SMS Integration Twilio's REST API requires Account SID and Auth Token. The Messaging API endpoint is /2010-04-01/Accounts/{AccountSid}/Messages.json. For two-way messaging, configure a webhook URL to receive incoming messages. Consider using a queue for high-volume outbound SMS to avoid rate limits. # PentaCodes Technical Reference and Integration Documentation # Version 1.0 | Last Updated March 2025 # This document contains technical reference material for common integrations and deployment procedures. ## QuickBooks Online Integration The QuickBooks Online API uses OAuth 2.0 for authentication. You will need to register your application in the Intuit Developer Portal to obtain client credentials. The base URL for the API is https://quickbooks.api.intuit.com/v3/company/{realmId}. Common endpoints include /invoice, /customer, /payment, and /bill. Rate limits apply: 500 requests per minute for production apps. Always implement exponential backoff for 429 responses. ## Stripe Payment Integration Stripe provides both client-side (Stripe.js) and server-side APIs. For PCI compliance, never pass raw card numbers through your server—use Stripe Elements or the Payment Intents API. Webhooks are essential for handling asynchronous events like payment succeeded or subscription renewed. Configure your webhook endpoint to verify signatures using the Stripe-Signature header. ## ShipStation Integration The ShipStation API is REST-based. Authentication uses API key and API secret in the Authorization header. Endpoints cover orders, shipments, carriers, and warehouses. Poll for new orders or use webhooks if available for your plan. Batch operations are supported for bulk label creation. ## Twilio SMS Integration Twilio's REST API requires Account SID and Auth Token. The Messaging API endpoint is /2010-04-01/Accounts/{AccountSid}/Messages.json. For two-way messaging, configure a webhook URL to receive incoming messages. Consider using a queue for high-volume outbound SMS to avoid rate limits. # PentaCodes Technical Reference and Integration Documentation # Version 1.0 | Last Updated March 2025 # This document contains technical reference material for common integrations and deployment procedures. ## QuickBooks Online Integration The QuickBooks Online API uses OAuth 2.0 for authentication. You will need to register your application in the Intuit Developer Portal to obtain client credentials. The base URL for the API is https://quickbooks.api.intuit.com/v3/company/{realmId}. Common endpoints include /invoice, /customer, /payment, and /bill. Rate limits apply: 500 requests per minute for production apps. Always implement exponential backoff for 429 responses. ## Stripe Payment Integration Stripe provides both client-side (Stripe.js) and server-side APIs. For PCI compliance, never pass raw card numbers through your server—use Stripe Elements or the Payment Intents API. Webhooks are essential for handling asynchronous events like payment succeeded or subscription renewed. Configure your webhook endpoint to verify signatures using the Stripe-Signature header. ## ShipStation Integration The ShipStation API is REST-based. Authentication uses API key and API secret in the Authorization header. Endpoints cover orders, shipments, carriers, and warehouses. Poll for new orders or use webhooks if available for your plan. Batch operations are supported for bulk label creation. ## Twilio SMS Integration Twilio's REST API requires Account SID and Auth Token. The Messaging API endpoint is /2010-04-01/Accounts/{AccountSid}/Messages.json. For two-way messaging, configure a webhook URL to receive incoming messages. Consider using a queue for high-volume outbound SMS to avoid rate limits. # PentaCodes Technical Reference and Integration Documentation # Version 1.0 | Last Updated March 2025 # This document contains technical reference material for common integrations and deployment procedures. ## QuickBooks Online Integration The QuickBooks Online API uses OAuth 2.0 for authentication. You will need to register your application in the Intuit Developer Portal to obtain client credentials. The base URL for the API is https://quickbooks.api.intuit.com/v3/company/{realmId}. Common endpoints include /invoice, /customer, /payment, and /bill. Rate limits apply: 500 requests per minute for production apps. Always implement exponential backoff for 429 responses. ## Stripe Payment Integration Stripe provides both client-side (Stripe.js) and server-side APIs. For PCI compliance, never pass raw card numbers through your server—use Stripe Elements or the Payment Intents API. Webhooks are essential for handling asynchronous events like payment succeeded or subscription renewed. Configure your webhook endpoint to verify signatures using the Stripe-Signature header. ## ShipStation Integration The ShipStation API is REST-based. Authentication uses API key and API secret in the Authorization header. Endpoints cover orders, shipments, carriers, and warehouses. Poll for new orders or use webhooks if available for your plan. Batch operations are supported for bulk label creation. ## Twilio SMS Integration Twilio's REST API requires Account SID and Auth Token. The Messaging API endpoint is /2010-04-01/Accounts/{AccountSid}/Messages.json. For two-way messaging, configure a webhook URL to receive incoming messages. Consider using a queue for high-volume outbound SMS to avoid rate limits. # PentaCodes Technical Reference and Integration Documentation # Version 1.0 | Last Updated March 2025 # This document contains technical reference material for common integrations and deployment procedures. ## QuickBooks Online Integration The QuickBooks Online API uses OAuth 2.0 for authentication. You will need to register your application in the Intuit Developer Portal to obtain client credentials. The base URL for the API is https://quickbooks.api.intuit.com/v3/company/{realmId}. Common endpoints include /invoice, /customer, /payment, and /bill. Rate limits apply: 500 requests per minute for production apps. Always implement exponential backoff for 429 responses. ## Stripe Payment Integration Stripe provides both client-side (Stripe.js) and server-side APIs. For PCI compliance, never pass raw card numbers through your server—use Stripe Elements or the Payment Intents API. Webhooks are essential for handling asynchronous events like payment succeeded or subscription renewed. Configure your webhook endpoint to verify signatures using the Stripe-Signature header. ## ShipStation Integration The ShipStation API is REST-based. Authentication uses API key and API secret in the Authorization header. Endpoints cover orders, shipments, carriers, and warehouses. Poll for new orders or use webhooks if available for your plan. Batch operations are supported for bulk label creation. ## Twilio SMS Integration Twilio's REST API requires Account SID and Auth Token. The Messaging API endpoint is /2010-04-01/Accounts/{AccountSid}/Messages.json. For two-way messaging, configure a webhook URL to receive incoming messages. Consider using a queue for high-volume outbound SMS to avoid rate limits. # PentaCodes Technical Reference and Integration Documentation # Version 1.0 | Last Updated March 2025 # This document contains technical reference material for common integrations and deployment procedures. ## QuickBooks Online Integration The QuickBooks Online API uses OAuth 2.0 for authentication. You will need to register your application in the Intuit Developer Portal to obtain client credentials. The base URL for the API is https://quickbooks.api.intuit.com/v3/company/{realmId}. Common endpoints include /invoice, /customer, /payment, and /bill. Rate limits apply: 500 requests per minute for production apps. Always implement exponential backoff for 429 responses. ## Stripe Payment Integration Stripe provides both client-side (Stripe.js) and server-side APIs. For PCI compliance, never pass raw card numbers through your server—use Stripe Elements or the Payment Intents API. Webhooks are essential for handling asynchronous events like payment succeeded or subscription renewed. Configure your webhook endpoint to verify signatures using the Stripe-Signature header. ## ShipStation Integration The ShipStation API is REST-based. Authentication uses API key and API secret in the Authorization header. Endpoints cover orders, shipments, carriers, and warehouses. Poll for new orders or use webhooks if available for your plan. Batch operations are supported for bulk label creation. ## Twilio SMS Integration Twilio's REST API requires Account SID and Auth Token. The Messaging API endpoint is /2010-04-01/Accounts/{AccountSid}/Messages.json. For two-way messaging, configure a webhook URL to receive incoming messages. Consider using a queue for high-volume outbound SMS to avoid rate limits. # PentaCodes Technical Reference and Integration Documentation # Version 1.0 | Last Updated March 2025 # This document contains technical reference material for common integrations and deployment procedures. ## QuickBooks Online Integration The QuickBooks Online API uses OAuth 2.0 for authentication. You will need to register your application in the Intuit Developer Portal to obtain client credentials. The base URL for the API is https://quickbooks.api.intuit.com/v3/company/{realmId}. Common endpoints include /invoice, /customer, /payment, and /bill. Rate limits apply: 500 requests per minute for production apps. Always implement exponential backoff for 429 responses. ## Stripe Payment Integration Stripe provides both client-side (Stripe.js) and server-side APIs. For PCI compliance, never pass raw card numbers through your server—use Stripe Elements or the Payment Intents API. Webhooks are essential for handling asynchronous events like payment succeeded or subscription renewed. Configure your webhook endpoint to verify signatures using the Stripe-Signature header. ## ShipStation Integration The ShipStation API is REST-based. Authentication uses API key and API secret in the Authorization header. Endpoints cover orders, shipments, carriers, and warehouses. Poll for new orders or use webhooks if available for your plan. Batch operations are supported for bulk label creation. ## Twilio SMS Integration Twilio's REST API requires Account SID and Auth Token. The Messaging API endpoint is /2010-04-01/Accounts/{AccountSid}/Messages.json. For two-way messaging, configure a webhook URL to receive incoming messages. Consider using a queue for high-volume outbound SMS to avoid rate limits. # PentaCodes Technical Reference and Integration Documentation # Version 1.0 | Last Updated March 2025 # This document contains technical reference material for common integrations and deployment procedures. ## QuickBooks Online Integration The QuickBooks Online API uses OAuth 2.0 for authentication. You will need to register your application in the Intuit Developer Portal to obtain client credentials. The base URL for the API is https://quickbooks.api.intuit.com/v3/company/{realmId}. Common endpoints include /invoice, /customer, /payment, and /bill. Rate limits apply: 500 requests per minute for production apps. Always implement exponential backoff for 429 responses. ## Stripe Payment Integration Stripe provides both client-side (Stripe.js) and server-side APIs. For PCI compliance, never pass raw card numbers through your server—use Stripe Elements or the Payment Intents API. Webhooks are essential for handling asynchronous events like payment succeeded or subscription renewed. Configure your webhook endpoint to verify signatures using the Stripe-Signature header. ## ShipStation Integration The ShipStation API is REST-based. Authentication uses API key and API secret in the Authorization header. Endpoints cover orders, shipments, carriers, and warehouses. Poll for new orders or use webhooks if available for your plan. Batch operations are supported for bulk label creation. ## Twilio SMS Integration Twilio's REST API requires Account SID and Auth Token. The Messaging API endpoint is /2010-04-01/Accounts/{AccountSid}/Messages.json. For two-way messaging, configure a webhook URL to receive incoming messages. Consider using a queue for high-volume outbound SMS to avoid rate limits. # PentaCodes Technical Reference and Integration Documentation # Version 1.0 | Last Updated March 2025 # This document contains technical reference material for common integrations and deployment procedures. ## QuickBooks Online Integration The QuickBooks Online API uses OAuth 2.0 for authentication. You will need to register your application in the Intuit Developer Portal to obtain client credentials. The base URL for the API is https://quickbooks.api.intuit.com/v3/company/{realmId}. Common endpoints include /invoice, /customer, /payment, and /bill. Rate limits apply: 500 requests per minute for production apps. Always implement exponential backoff for 429 responses. ## Stripe Payment Integration Stripe provides both client-side (Stripe.js) and server-side APIs. For PCI compliance, never pass raw card numbers through your server—use Stripe Elements or the Payment Intents API. Webhooks are essential for handling asynchronous events like payment succeeded or subscription renewed. Configure your webhook endpoint to verify signatures using the Stripe-Signature header. ## ShipStation Integration The ShipStation API is REST-based. Authentication uses API key and API secret in the Authorization header. Endpoints cover orders, shipments, carriers, and warehouses. Poll for new orders or use webhooks if available for your plan. Batch operations are supported for bulk label creation. ## Twilio SMS Integration Twilio's REST API requires Account SID and Auth Token. The Messaging API endpoint is /2010-04-01/Accounts/{AccountSid}/Messages.json. For two-way messaging, configure a webhook URL to receive incoming messages. Consider using a queue for high-volume outbound SMS to avoid rate limits. # PentaCodes Technical Reference and Integration Documentation # Version 1.0 | Last Updated March 2025 # This document contains technical reference material for common integrations and deployment procedures. ## QuickBooks Online Integration The QuickBooks Online API uses OAuth 2.0 for authentication. You will need to register your application in the Intuit Developer Portal to obtain client credentials. The base URL for the API is https://quickbooks.api.intuit.com/v3/company/{realmId}. Common endpoints include /invoice, /customer, /payment, and /bill. Rate limits apply: 500 requests per minute for production apps. Always implement exponential backoff for 429 responses. ## Stripe Payment Integration Stripe provides both client-side (Stripe.js) and server-side APIs. For PCI compliance, never pass raw card numbers through your server—use Stripe Elements or the Payment Intents API. Webhooks are essential for handling asynchronous events like payment succeeded or subscription renewed. Configure your webhook endpoint to verify signatures using the Stripe-Signature header. ## ShipStation Integration The ShipStation API is REST-based. Authentication uses API key and API secret in the Authorization header. Endpoints cover orders, shipments, carriers, and warehouses. Poll for new orders or use webhooks if available for your plan. Batch operations are supported for bulk label creation. ## Twilio SMS Integration Twilio's REST API requires Account SID and Auth Token. The Messaging API endpoint is /2010-04-01/Accounts/{AccountSid}/Messages.json. For two-way messaging, configure a webhook URL to receive incoming messages. Consider using a queue for high-volume outbound SMS to avoid rate limits. # PentaCodes Technical Reference and Integration Documentation # Version 1.0 | Last Updated March 2025 # This document contains technical reference material for common integrations and deployment procedures. ## QuickBooks Online Integration The QuickBooks Online API uses OAuth 2.0 for authentication. You will need to register your application in the Intuit Developer Portal to obtain client credentials. The base URL for the API is https://quickbooks.api.intuit.com/v3/company/{realmId}. Common endpoints include /invoice, /customer, /payment, and /bill. Rate limits apply: 500 requests per minute for production apps. Always implement exponential backoff for 429 responses. ## Stripe Payment Integration Stripe provides both client-side (Stripe.js) and server-side APIs. For PCI compliance, never pass raw card numbers through your server—use Stripe Elements or the Payment Intents API. Webhooks are essential for handling asynchronous events like payment succeeded or subscription renewed. Configure your webhook endpoint to verify signatures using the Stripe-Signature header. ## ShipStation Integration The ShipStation API is REST-based. Authentication uses API key and API secret in the Authorization header. Endpoints cover orders, shipments, carriers, and warehouses. Poll for new orders or use webhooks if available for your plan. Batch operations are supported for bulk label creation. ## Twilio SMS Integration Twilio's REST API requires Account SID and Auth Token. The Messaging API endpoint is /2010-04-01/Accounts/{AccountSid}/Messages.json. For two-way messaging, configure a webhook URL to receive incoming messages. Consider using a queue for high-volume outbound SMS to avoid rate limits. # PentaCodes Technical Reference and Integration Documentation # Version 1.0 | Last Updated March 2025 # This document contains technical reference material for common integrations and deployment procedures. ## QuickBooks Online Integration The QuickBooks Online API uses OAuth 2.0 for authentication. You will need to register your application in the Intuit Developer Portal to obtain client credentials. The base URL for the API is https://quickbooks.api.intuit.com/v3/company/{realmId}. Common endpoints include /invoice, /customer, /payment, and /bill. Rate limits apply: 500 requests per minute for production apps. Always implement exponential backoff for 429 responses. ## Stripe Payment Integration Stripe provides both client-side (Stripe.js) and server-side APIs. For PCI compliance, never pass raw card numbers through your server—use Stripe Elements or the Payment Intents API. Webhooks are essential for handling asynchronous events like payment succeeded or subscription renewed. Configure your webhook endpoint to verify signatures using the Stripe-Signature header. ## ShipStation Integration The ShipStation API is REST-based. Authentication uses API key and API secret in the Authorization header. Endpoints cover orders, shipments, carriers, and warehouses. Poll for new orders or use webhooks if available for your plan. Batch operations are supported for bulk label creation. ## Twilio SMS Integration Twilio's REST API requires Account SID and Auth Token. The Messaging API endpoint is /2010-04-01/Accounts/{AccountSid}/Messages.json. For two-way messaging, configure a webhook URL to receive incoming messages. Consider using a queue for high-volume outbound SMS to avoid rate limits. # PentaCodes Technical Reference and Integration Documentation # Version 1.0 | Last Updated March 2025 # This document contains technical reference material for common integrations and deployment procedures. ## QuickBooks Online Integration The QuickBooks Online API uses OAuth 2.0 for authentication. You will need to register your application in the Intuit Developer Portal to obtain client credentials. The base URL for the API is https://quickbooks.api.intuit.com/v3/company/{realmId}. Common endpoints include /invoice, /customer, /payment, and /bill. Rate limits apply: 500 requests per minute for production apps. Always implement exponential backoff for 429 responses. ## Stripe Payment Integration Stripe provides both client-side (Stripe.js) and server-side APIs. For PCI compliance, never pass raw card numbers through your server—use Stripe Elements or the Payment Intents API. Webhooks are essential for handling asynchronous events like payment succeeded or subscription renewed. Configure your webhook endpoint to verify signatures using the Stripe-Signature header. ## ShipStation Integration The ShipStation API is REST-based. Authentication uses API key and API secret in the Authorization header. Endpoints cover orders, shipments, carriers, and warehouses. Poll for new orders or use webhooks if available for your plan. Batch operations are supported for bulk label creation. ## Twilio SMS Integration Twilio's REST API requires Account SID and Auth Token. The Messaging API endpoint is /2010-04-01/Accounts/{AccountSid}/Messages.json. For two-way messaging, configure a webhook URL to receive incoming messages. Consider using a queue for high-volume outbound SMS to avoid rate limits. # PentaCodes Technical Reference and Integration Documentation # Version 1.0 | Last Updated March 2025 # This document contains technical reference material for common integrations and deployment procedures. ## QuickBooks Online Integration The QuickBooks Online API uses OAuth 2.0 for authentication. You will need to register your application in the Intuit Developer Portal to obtain client credentials. The base URL for the API is https://quickbooks.api.intuit.com/v3/company/{realmId}. Common endpoints include /invoice, /customer, /payment, and /bill. Rate limits apply: 500 requests per minute for production apps. Always implement exponential backoff for 429 responses. ## Stripe Payment Integration Stripe provides both client-side (Stripe.js) and server-side APIs. For PCI compliance, never pass raw card numbers through your server—use Stripe Elements or the Payment Intents API. Webhooks are essential for handling asynchronous events like payment succeeded or subscription renewed. Configure your webhook endpoint to verify signatures using the Stripe-Signature header. ## ShipStation Integration The ShipStation API is REST-based. Authentication uses API key and API secret in the Authorization header. Endpoints cover orders, shipments, carriers, and warehouses. Poll for new orders or use webhooks if available for your plan. Batch operations are supported for bulk label creation. ## Twilio SMS Integration Twilio's REST API requires Account SID and Auth Token. The Messaging API endpoint is /2010-04-01/Accounts/{AccountSid}/Messages.json. For two-way messaging, configure a webhook URL to receive incoming messages. Consider using a queue for high-volume outbound SMS to avoid rate limits. # PentaCodes Technical Reference and Integration Documentation # Version 1.0 | Last Updated March 2025 # This document contains technical reference material for common integrations and deployment procedures. ## QuickBooks Online Integration The QuickBooks Online API uses OAuth 2.0 for authentication. You will need to register your application in the Intuit Developer Portal to obtain client credentials. The base URL for the API is https://quickbooks.api.intuit.com/v3/company/{realmId}. Common endpoints include /invoice, /customer, /payment, and /bill. Rate limits apply: 500 requests per minute for production apps. Always implement exponential backoff for 429 responses. ## Stripe Payment Integration Stripe provides both client-side (Stripe.js) and server-side APIs. For PCI compliance, never pass raw card numbers through your server—use Stripe Elements or the Payment Intents API. Webhooks are essential for handling asynchronous events like payment succeeded or subscription renewed. Configure your webhook endpoint to verify signatures using the Stripe-Signature header. ## ShipStation Integration The ShipStation API is REST-based. Authentication uses API key and API secret in the Authorization header. Endpoints cover orders, shipments, carriers, and warehouses. Poll for new orders or use webhooks if available for your plan. Batch operations are supported for bulk label creation. ## Twilio SMS Integration Twilio's REST API requires Account SID and Auth Token. The Messaging API endpoint is /2010-04-01/Accounts/{AccountSid}/Messages.json. For two-way messaging, configure a webhook URL to receive incoming messages. Consider using a queue for high-volume outbound SMS to avoid rate limits. # PentaCodes Technical Reference and Integration Documentation # Version 1.0 | Last Updated March 2025 # This document contains technical reference material for common integrations and deployment procedures. ## QuickBooks Online Integration The QuickBooks Online API uses OAuth 2.0 for authentication. You will need to register your application in the Intuit Developer Portal to obtain client credentials. The base URL for the API is https://quickbooks.api.intuit.com/v3/company/{realmId}. Common endpoints include /invoice, /customer, /payment, and /bill. Rate limits apply: 500 requests per minute for production apps. Always implement exponential backoff for 429 responses. ## Stripe Payment Integration Stripe provides both client-side (Stripe.js) and server-side APIs. For PCI compliance, never pass raw card numbers through your server—use Stripe Elements or the Payment Intents API. Webhooks are essential for handling asynchronous events like payment succeeded or subscription renewed. Configure your webhook endpoint to verify signatures using the Stripe-Signature header. ## ShipStation Integration The ShipStation API is REST-based. Authentication uses API key and API secret in the Authorization header. Endpoints cover orders, shipments, carriers, and warehouses. Poll for new orders or use webhooks if available for your plan. Batch operations are supported for bulk label creation. ## Twilio SMS Integration Twilio's REST API requires Account SID and Auth Token. The Messaging API endpoint is /2010-04-01/Accounts/{AccountSid}/Messages.json. For two-way messaging, configure a webhook URL to receive incoming messages. Consider using a queue for high-volume outbound SMS to avoid rate limits. # PentaCodes Technical Reference and Integration Documentation # Version 1.0 | Last Updated March 2025 # This document contains technical reference material for common integrations and deployment procedures. ## QuickBooks Online Integration The QuickBooks Online API uses OAuth 2.0 for authentication. You will need to register your application in the Intuit Developer Portal to obtain client credentials. The base URL for the API is https://quickbooks.api.intuit.com/v3/company/{realmId}. Common endpoints include /invoice, /customer, /payment, and /bill. Rate limits apply: 500 requests per minute for production apps. Always implement exponential backoff for 429 responses. ## Stripe Payment Integration Stripe provides both client-side (Stripe.js) and server-side APIs. For PCI compliance, never pass raw card numbers through your server—use Stripe Elements or the Payment Intents API. Webhooks are essential for handling asynchronous events like payment succeeded or subscription renewed. Configure your webhook endpoint to verify signatures using the Stripe-Signature header. ## ShipStation Integration The ShipStation API is REST-based. Authentication uses API key and API secret in the Authorization header. Endpoints cover orders, shipments, carriers, and warehouses. Poll for new orders or use webhooks if available for your plan. Batch operations are supported for bulk label creation. ## Twilio SMS Integration Twilio's REST API requires Account SID and Auth Token. The Messaging API endpoint is /2010-04-01/Accounts/{AccountSid}/Messages.json. For two-way messaging, configure a webhook URL to receive incoming messages. Consider using a queue for high-volume outbound SMS to avoid rate limits. # PentaCodes Technical Reference and Integration Documentation # Version 1.0 | Last Updated March 2025 # This document contains technical reference material for common integrations and deployment procedures. ## QuickBooks Online Integration The QuickBooks Online API uses OAuth 2.0 for authentication. You will need to register your application in the Intuit Developer Portal to obtain client credentials. The base URL for the API is https://quickbooks.api.intuit.com/v3/company/{realmId}. Common endpoints include /invoice, /customer, /payment, and /bill. Rate limits apply: 500 requests per minute for production apps. Always implement exponential backoff for 429 responses. ## Stripe Payment Integration Stripe provides both client-side (Stripe.js) and server-side APIs. For PCI compliance, never pass raw card numbers through your server—use Stripe Elements or the Payment Intents API. Webhooks are essential for handling asynchronous events like payment succeeded or subscription renewed. Configure your webhook endpoint to verify signatures using the Stripe-Signature header. ## ShipStation Integration The ShipStation API is REST-based. Authentication uses API key and API secret in the Authorization header. Endpoints cover orders, shipments, carriers, and warehouses. Poll for new orders or use webhooks if available for your plan. Batch operations are supported for bulk label creation. ## Twilio SMS Integration Twilio's REST API requires Account SID and Auth Token. The Messaging API endpoint is /2010-04-01/Accounts/{AccountSid}/Messages.json. For two-way messaging, configure a webhook URL to receive incoming messages. Consider using a queue for high-volume outbound SMS to avoid rate limits. # PentaCodes Technical Reference and Integration Documentation # Version 1.0 | Last Updated March 2025 # This document contains technical reference material for common integrations and deployment procedures. ## QuickBooks Online Integration The QuickBooks Online API uses OAuth 2.0 for authentication. You will need to register your application in the Intuit Developer Portal to obtain client credentials. The base URL for the API is https://quickbooks.api.intuit.com/v3/company/{realmId}. Common endpoints include /invoice, /customer, /payment, and /bill. Rate limits apply: 500 requests per minute for production apps. Always implement exponential backoff for 429 responses. ## Stripe Payment Integration Stripe provides both client-side (Stripe.js) and server-side APIs. For PCI compliance, never pass raw card numbers through your server—use Stripe Elements or the Payment Intents API. Webhooks are essential for handling asynchronous events like payment succeeded or subscription renewed. Configure your webhook endpoint to verify signatures using the Stripe-Signature header. ## ShipStation Integration The ShipStation API is REST-based. Authentication uses API key and API secret in the Authorization header. Endpoints cover orders, shipments, carriers, and warehouses. Poll for new orders or use webhooks if available for your plan. Batch operations are supported for bulk label creation. ## Twilio SMS Integration Twilio's REST API requires Account SID and Auth Token. The Messaging API endpoint is /2010-04-01/Accounts/{AccountSid}/Messages.json. For two-way messaging, configure a webhook URL to receive incoming messages. Consider using a queue for high-volume outbound SMS to avoid rate limits. # PentaCodes Technical Reference and Integration Documentation # Version 1.0 | Last Updated March 2025 # This document contains technical reference material for common integrations and deployment procedures. ## QuickBooks Online Integration The QuickBooks Online API uses OAuth 2.0 for authentication. You will need to register your application in the Intuit Developer Portal to obtain client credentials. The base URL for the API is https://quickbooks.api.intuit.com/v3/company/{realmId}. Common endpoints include /invoice, /customer, /payment, and /bill. Rate limits apply: 500 requests per minute for production apps. Always implement exponential backoff for 429 responses. ## Stripe Payment Integration Stripe provides both client-side (Stripe.js) and server-side APIs. For PCI compliance, never pass raw card numbers through your server—use Stripe Elements or the Payment Intents API. Webhooks are essential for handling asynchronous events like payment succeeded or subscription renewed. Configure your webhook endpoint to verify signatures using the Stripe-Signature header. ## ShipStation Integration The ShipStation API is REST-based. Authentication uses API key and API secret in the Authorization header. Endpoints cover orders, shipments, carriers, and warehouses. Poll for new orders or use webhooks if available for your plan. Batch operations are supported for bulk label creation. ## Twilio SMS Integration Twilio's REST API requires Account SID and Auth Token. The Messaging API endpoint is /2010-04-01/Accounts/{AccountSid}/Messages.json. For two-way messaging, configure a webhook URL to receive incoming messages. Consider using a queue for high-volume outbound SMS to avoid rate limits. # PentaCodes Technical Reference and Integration Documentation # Version 1.0 | Last Updated March 2025 # This document contains technical reference material for common integrations and deployment procedures. ## QuickBooks Online Integration The QuickBooks Online API uses OAuth 2.0 for authentication. You will need to register your application in the Intuit Developer Portal to obtain client credentials. The base URL for the API is https://quickbooks.api.intuit.com/v3/company/{realmId}. Common endpoints include /invoice, /customer, /payment, and /bill. Rate limits apply: 500 requests per minute for production apps. Always implement exponential backoff for 429 responses. ## Stripe Payment Integration Stripe provides both client-side (Stripe.js) and server-side APIs. For PCI compliance, never pass raw card numbers through your server—use Stripe Elements or the Payment Intents API. Webhooks are essential for handling asynchronous events like payment succeeded or subscription renewed. Configure your webhook endpoint to verify signatures using the Stripe-Signature header. ## ShipStation Integration The ShipStation API is REST-based. Authentication uses API key and API secret in the Authorization header. Endpoints cover orders, shipments, carriers, and warehouses. Poll for new orders or use webhooks if available for your plan. Batch operations are supported for bulk label creation. ## Twilio SMS Integration Twilio's REST API requires Account SID and Auth Token. The Messaging API endpoint is /2010-04-01/Accounts/{AccountSid}/Messages.json. For two-way messaging, configure a webhook URL to receive incoming messages. Consider using a queue for high-volume outbound SMS to avoid rate limits. # PentaCodes Technical Reference and Integration Documentation # Version 1.0 | Last Updated March 2025 # This document contains technical reference material for common integrations and deployment procedures. ## QuickBooks Online Integration The QuickBooks Online API uses OAuth 2.0 for authentication. You will need to register your application in the Intuit Developer Portal to obtain client credentials. The base URL for the API is https://quickbooks.api.intuit.com/v3/company/{realmId}. Common endpoints include /invoice, /customer, /payment, and /bill. Rate limits apply: 500 requests per minute for production apps. Always implement exponential backoff for 429 responses. ## Stripe Payment Integration Stripe provides both client-side (Stripe.js) and server-side APIs. For PCI compliance, never pass raw card numbers through your server—use Stripe Elements or the Payment Intents API. Webhooks are essential for handling asynchronous events like payment succeeded or subscription renewed. Configure your webhook endpoint to verify signatures using the Stripe-Signature header. ## ShipStation Integration The ShipStation API is REST-based. Authentication uses API key and API secret in the Authorization header. Endpoints cover orders, shipments, carriers, and warehouses. Poll for new orders or use webhooks if available for your plan. Batch operations are supported for bulk label creation. ## Twilio SMS Integration Twilio's REST API requires Account SID and Auth Token. The Messaging API endpoint is /2010-04-01/Accounts/{AccountSid}/Messages.json. For two-way messaging, configure a webhook URL to receive incoming messages. Consider using a queue for high-volume outbound SMS to avoid rate limits. # PentaCodes Technical Reference and Integration Documentation # Version 1.0 | Last Updated March 2025 # This document contains technical reference material for common integrations and deployment procedures. ## QuickBooks Online Integration The QuickBooks Online API uses OAuth 2.0 for authentication. You will need to register your application in the Intuit Developer Portal to obtain client credentials. The base URL for the API is https://quickbooks.api.intuit.com/v3/company/{realmId}. Common endpoints include /invoice, /customer, /payment, and /bill. Rate limits apply: 500 requests per minute for production apps. Always implement exponential backoff for 429 responses. ## Stripe Payment Integration Stripe provides both client-side (Stripe.js) and server-side APIs. For PCI compliance, never pass raw card numbers through your server—use Stripe Elements or the Payment Intents API. Webhooks are essential for handling asynchronous events like payment succeeded or subscription renewed. Configure your webhook endpoint to verify signatures using the Stripe-Signature header. ## ShipStation Integration The ShipStation API is REST-based. Authentication uses API key and API secret in the Authorization header. Endpoints cover orders, shipments, carriers, and warehouses. Poll for new orders or use webhooks if available for your plan. Batch operations are supported for bulk label creation. ## Twilio SMS Integration Twilio's REST API requires Account SID and Auth Token. The Messaging API endpoint is /2010-04-01/Accounts/{AccountSid}/Messages.json. For two-way messaging, configure a webhook URL to receive incoming messages. Consider using a queue for high-volume outbound SMS to avoid rate limits. # PentaCodes Technical Reference and Integration Documentation # Version 1.0 | Last Updated March 2025 # This document contains technical reference material for common integrations and deployment procedures. ## QuickBooks Online Integration The QuickBooks Online API uses OAuth 2.0 for authentication. You will need to register your application in the Intuit Developer Portal to obtain client credentials. The base URL for the API is https://quickbooks.api.intuit.com/v3/company/{realmId}. Common endpoints include /invoice, /customer, /payment, and /bill. Rate limits apply: 500 requests per minute for production apps. Always implement exponential backoff for 429 responses. ## Stripe Payment Integration Stripe provides both client-side (Stripe.js) and server-side APIs. For PCI compliance, never pass raw card numbers through your server—use Stripe Elements or the Payment Intents API. Webhooks are essential for handling asynchronous events like payment succeeded or subscription renewed. Configure your webhook endpoint to verify signatures using the Stripe-Signature header. ## ShipStation Integration The ShipStation API is REST-based. Authentication uses API key and API secret in the Authorization header. Endpoints cover orders, shipments, carriers, and warehouses. Poll for new orders or use webhooks if available for your plan. Batch operations are supported for bulk label creation. ## Twilio SMS Integration Twilio's REST API requires Account SID and Auth Token. The Messaging API endpoint is /2010-04-01/Accounts/{AccountSid}/Messages.json. For two-way messaging, configure a webhook URL to receive incoming messages. Consider using a queue for high-volume outbound SMS to avoid rate limits. # PentaCodes Technical Reference and Integration Documentation # Version 1.0 | Last Updated March 2025 # This document contains technical reference material for common integrations and deployment procedures. ## QuickBooks Online Integration The QuickBooks Online API uses OAuth 2.0 for authentication. You will need to register your application in the Intuit Developer Portal to obtain client credentials. The base URL for the API is https://quickbooks.api.intuit.com/v3/company/{realmId}. Common endpoints include /invoice, /customer, /payment, and /bill. Rate limits apply: 500 requests per minute for production apps. Always implement exponential backoff for 429 responses. ## Stripe Payment Integration Stripe provides both client-side (Stripe.js) and server-side APIs. For PCI compliance, never pass raw card numbers through your server—use Stripe Elements or the Payment Intents API. Webhooks are essential for handling asynchronous events like payment succeeded or subscription renewed. Configure your webhook endpoint to verify signatures using the Stripe-Signature header. ## ShipStation Integration The ShipStation API is REST-based. Authentication uses API key and API secret in the Authorization header. Endpoints cover orders, shipments, carriers, and warehouses. Poll for new orders or use webhooks if available for your plan. Batch operations are supported for bulk label creation. ## Twilio SMS Integration Twilio's REST API requires Account SID and Auth Token. The Messaging API endpoint is /2010-04-01/Accounts/{AccountSid}/Messages.json. For two-way messaging, configure a webhook URL to receive incoming messages. Consider using a queue for high-volume outbound SMS to avoid rate limits. # PentaCodes Technical Reference and Integration Documentation # Version 1.0 | Last Updated March 2025 # This document contains technical reference material for common integrations and deployment procedures. ## QuickBooks Online Integration The QuickBooks Online API uses OAuth 2.0 for authentication. You will need to register your application in the Intuit Developer Portal to obtain client credentials. The base URL for the API is https://quickbooks.api.intuit.com/v3/company/{realmId}. Common endpoints include /invoice, /customer, /payment, and /bill. Rate limits apply: 500 requests per minute for production apps. Always implement exponential backoff for 429 responses. ## Stripe Payment Integration Stripe provides both client-side (Stripe.js) and server-side APIs. For PCI compliance, never pass raw card numbers through your server—use Stripe Elements or the Payment Intents API. Webhooks are essential for handling asynchronous events like payment succeeded or subscription renewed. Configure your webhook endpoint to verify signatures using the Stripe-Signature header. ## ShipStation Integration The ShipStation API is REST-based. Authentication uses API key and API secret in the Authorization header. Endpoints cover orders, shipments, carriers, and warehouses. Poll for new orders or use webhooks if available for your plan. Batch operations are supported for bulk label creation. ## Twilio SMS Integration Twilio's REST API requires Account SID and Auth Token. The Messaging API endpoint is /2010-04-01/Accounts/{AccountSid}/Messages.json. For two-way messaging, configure a webhook URL to receive incoming messages. Consider using a queue for high-volume outbound SMS to avoid rate limits. # PentaCodes Technical Reference and Integration Documentation # Version 1.0 | Last Updated March 2025 # This document contains technical reference material for common integrations and deployment procedures. ## QuickBooks Online Integration The QuickBooks Online API uses OAuth 2.0 for authentication. You will need to register your application in the Intuit Developer Portal to obtain client credentials. The base URL for the API is https://quickbooks.api.intuit.com/v3/company/{realmId}. Common endpoints include /invoice, /customer, /payment, and /bill. Rate limits apply: 500 requests per minute for production apps. Always implement exponential backoff for 429 responses. ## Stripe Payment Integration Stripe provides both client-side (Stripe.js) and server-side APIs. For PCI compliance, never pass raw card numbers through your server—use Stripe Elements or the Payment Intents API. Webhooks are essential for handling asynchronous events like payment succeeded or subscription renewed. Configure your webhook endpoint to verify signatures using the Stripe-Signature header. ## ShipStation Integration The ShipStation API is REST-based. Authentication uses API key and API secret in the Authorization header. Endpoints cover orders, shipments, carriers, and warehouses. Poll for new orders or use webhooks if available for your plan. Batch operations are supported for bulk label creation. ## Twilio SMS Integration Twilio's REST API requires Account SID and Auth Token. The Messaging API endpoint is /2010-04-01/Accounts/{AccountSid}/Messages.json. For two-way messaging, configure a webhook URL to receive incoming messages. Consider using a queue for high-volume outbound SMS to avoid rate limits. # PentaCodes Technical Reference and Integration Documentation # Version 1.0 | Last Updated March 2025 # This document contains technical reference material for common integrations and deployment procedures. ## QuickBooks Online Integration The QuickBooks Online API uses OAuth 2.0 for authentication. You will need to register your application in the Intuit Developer Portal to obtain client credentials. The base URL for the API is https://quickbooks.api.intuit.com/v3/company/{realmId}. Common endpoints include /invoice, /customer, /payment, and /bill. Rate limits apply: 500 requests per minute for production apps. Always implement exponential backoff for 429 responses. ## Stripe Payment Integration Stripe provides both client-side (Stripe.js) and server-side APIs. For PCI compliance, never pass raw card numbers through your server—use Stripe Elements or the Payment Intents API. Webhooks are essential for handling asynchronous events like payment succeeded or subscription renewed. Configure your webhook endpoint to verify signatures using the Stripe-Signature header. ## ShipStation Integration The ShipStation API is REST-based. Authentication uses API key and API secret in the Authorization header. Endpoints cover orders, shipments, carriers, and warehouses. Poll for new orders or use webhooks if available for your plan. Batch operations are supported for bulk label creation. ## Twilio SMS Integration Twilio's REST API requires Account SID and Auth Token. The Messaging API endpoint is /2010-04-01/Accounts/{AccountSid}/Messages.json. For two-way messaging, configure a webhook URL to receive incoming messages. Consider using a queue for high-volume outbound SMS to avoid rate limits. # PentaCodes Technical Reference and Integration Documentation # Version 1.0 | Last Updated March 2025 # This document contains technical reference material for common integrations and deployment procedures. ## QuickBooks Online Integration The QuickBooks Online API uses OAuth 2.0 for authentication. You will need to register your application in the Intuit Developer Portal to obtain client credentials. The base URL for the API is https://quickbooks.api.intuit.com/v3/company/{realmId}. Common endpoints include /invoice, /customer, /payment, and /bill. Rate limits apply: 500 requests per minute for production apps. Always implement exponential backoff for 429 responses. ## Stripe Payment Integration Stripe provides both client-side (Stripe.js) and server-side APIs. For PCI compliance, never pass raw card numbers through your server—use Stripe Elements or the Payment Intents API. Webhooks are essential for handling asynchronous events like payment succeeded or subscription renewed. Configure your webhook endpoint to verify signatures using the Stripe-Signature header. ## ShipStation Integration The ShipStation API is REST-based. Authentication uses API key and API secret in the Authorization header. Endpoints cover orders, shipments, carriers, and warehouses. Poll for new orders or use webhooks if available for your plan. Batch operations are supported for bulk label creation. ## Twilio SMS Integration Twilio's REST API requires Account SID and Auth Token. The Messaging API endpoint is /2010-04-01/Accounts/{AccountSid}/Messages.json. For two-way messaging, configure a webhook URL to receive incoming messages. Consider using a queue for high-volume outbound SMS to avoid rate limits. # PentaCodes Technical Reference and Integration Documentation # Version 1.0 | Last Updated March 2025 # This document contains technical reference material for common integrations and deployment procedures. ## QuickBooks Online Integration The QuickBooks Online API uses OAuth 2.0 for authentication. You will need to register your application in the Intuit Developer Portal to obtain client credentials. The base URL for the API is https://quickbooks.api.intuit.com/v3/company/{realmId}. Common endpoints include /invoice, /customer, /payment, and /bill. Rate limits apply: 500 requests per minute for production apps. Always implement exponential backoff for 429 responses. ## Stripe Payment Integration Stripe provides both client-side (Stripe.js) and server-side APIs. For PCI compliance, never pass raw card numbers through your server—use Stripe Elements or the Payment Intents API. Webhooks are essential for handling asynchronous events like payment succeeded or subscription renewed. Configure your webhook endpoint to verify signatures using the Stripe-Signature header. ## ShipStation Integration The ShipStation API is REST-based. Authentication uses API key and API secret in the Authorization header. Endpoints cover orders, shipments, carriers, and warehouses. Poll for new orders or use webhooks if available for your plan. Batch operations are supported for bulk label creation. ## Twilio SMS Integration Twilio's REST API requires Account SID and Auth Token. The Messaging API endpoint is /2010-04-01/Accounts/{AccountSid}/Messages.json. For two-way messaging, configure a webhook URL to receive incoming messages. Consider using a queue for high-volume outbound SMS to avoid rate limits. # PentaCodes Technical Reference and Integration Documentation # Version 1.0 | Last Updated March 2025 # This document contains technical reference material for common integrations and deployment procedures. ## QuickBooks Online Integration The QuickBooks Online API uses OAuth 2.0 for authentication. You will need to register your application in the Intuit Developer Portal to obtain client credentials. The base URL for the API is https://quickbooks.api.intuit.com/v3/company/{realmId}. Common endpoints include /invoice, /customer, /payment, and /bill. Rate limits apply: 500 requests per minute for production apps. Always implement exponential backoff for 429 responses. ## Stripe Payment Integration Stripe provides both client-side (Stripe.js) and server-side APIs. For PCI compliance, never pass raw card numbers through your server—use Stripe Elements or the Payment Intents API. Webhooks are essential for handling asynchronous events like payment succeeded or subscription renewed. Configure your webhook endpoint to verify signatures using the Stripe-Signature header. ## ShipStation Integration The ShipStation API is REST-based. Authentication uses API key and API secret in the Authorization header. Endpoints cover orders, shipments, carriers, and warehouses. Poll for new orders or use webhooks if available for your plan. Batch operations are supported for bulk label creation. ## Twilio SMS Integration Twilio's REST API requires Account SID and Auth Token. The Messaging API endpoint is /2010-04-01/Accounts/{AccountSid}/Messages.json. For two-way messaging, configure a webhook URL to receive incoming messages. Consider using a queue for high-volume outbound SMS to avoid rate limits. # PentaCodes Technical Reference and Integration Documentation # Version 1.0 | Last Updated March 2025 # This document contains technical reference material for common integrations and deployment procedures. ## QuickBooks Online Integration The QuickBooks Online API uses OAuth 2.0 for authentication. You will need to register your application in the Intuit Developer Portal to obtain client credentials. The base URL for the API is https://quickbooks.api.intuit.com/v3/company/{realmId}. Common endpoints include /invoice, /customer, /payment, and /bill. Rate limits apply: 500 requests per minute for production apps. Always implement exponential backoff for 429 responses. ## Stripe Payment Integration Stripe provides both client-side (Stripe.js) and server-side APIs. For PCI compliance, never pass raw card numbers through your server—use Stripe Elements or the Payment Intents API. Webhooks are essential for handling asynchronous events like payment succeeded or subscription renewed. Configure your webhook endpoint to verify signatures using the Stripe-Signature header. ## ShipStation Integration The ShipStation API is REST-based. Authentication uses API key and API secret in the Authorization header. Endpoints cover orders, shipments, carriers, and warehouses. Poll for new orders or use webhooks if available for your plan. Batch operations are supported for bulk label creation. ## Twilio SMS Integration Twilio's REST API requires Account SID and Auth Token. The Messaging API endpoint is /2010-04-01/Accounts/{AccountSid}/Messages.json. For two-way messaging, configure a webhook URL to receive incoming messages. Consider using a queue for high-volume outbound SMS to avoid rate limits. # PentaCodes Technical Reference and Integration Documentation # Version 1.0 | Last Updated March 2025 # This document contains technical reference material for common integrations and deployment procedures. ## QuickBooks Online Integration The QuickBooks Online API uses OAuth 2.0 for authentication. You will need to register your application in the Intuit Developer Portal to obtain client credentials. The base URL for the API is https://quickbooks.api.intuit.com/v3/company/{realmId}. Common endpoints include /invoice, /customer, /payment, and /bill. Rate limits apply: 500 requests per minute for production apps. Always implement exponential backoff for 429 responses. ## Stripe Payment Integration Stripe provides both client-side (Stripe.js) and server-side APIs. For PCI compliance, never pass raw card numbers through your server—use Stripe Elements or the Payment Intents API. Webhooks are essential for handling asynchronous events like payment succeeded or subscription renewed. Configure your webhook endpoint to verify signatures using the Stripe-Signature header. ## ShipStation Integration The ShipStation API is REST-based. Authentication uses API key and API secret in the Authorization header. Endpoints cover orders, shipments, carriers, and warehouses. Poll for new orders or use webhooks if available for your plan. Batch operations are supported for bulk label creation. ## Twilio SMS Integration Twilio's REST API requires Account SID and Auth Token. The Messaging API endpoint is /2010-04-01/Accounts/{AccountSid}/Messages.json. For two-way messaging, configure a webhook URL to receive incoming messages. Consider using a queue for high-volume outbound SMS to avoid rate limits. # PentaCodes Technical Reference and Integration Documentation # Version 1.0 | Last Updated March 2025 # This document contains technical reference material for common integrations and deployment procedures. ## QuickBooks Online Integration The QuickBooks Online API uses OAuth 2.0 for authentication. You will need to register your application in the Intuit Developer Portal to obtain client credentials. The base URL for the API is https://quickbooks.api.intuit.com/v3/company/{realmId}. Common endpoints include /invoice, /customer, /payment, and /bill. Rate limits apply: 500 requests per minute for production apps. Always implement exponential backoff for 429 responses. ## Stripe Payment Integration Stripe provides both client-side (Stripe.js) and server-side APIs. For PCI compliance, never pass raw card numbers through your server—use Stripe Elements or the Payment Intents API. Webhooks are essential for handling asynchronous events like payment succeeded or subscription renewed. Configure your webhook endpoint to verify signatures using the Stripe-Signature header. ## ShipStation Integration The ShipStation API is REST-based. Authentication uses API key and API secret in the Authorization header. Endpoints cover orders, shipments, carriers, and warehouses. Poll for new orders or use webhooks if available for your plan. Batch operations are supported for bulk label creation. ## Twilio SMS Integration Twilio's REST API requires Account SID and Auth Token. The Messaging API endpoint is /2010-04-01/Accounts/{AccountSid}/Messages.json. For two-way messaging, configure a webhook URL to receive incoming messages. Consider using a queue for high-volume outbound SMS to avoid rate limits. # PentaCodes Technical Reference and Integration Documentation # Version 1.0 | Last Updated March 2025 # This document contains technical reference material for common integrations and deployment procedures. ## QuickBooks Online Integration The QuickBooks Online API uses OAuth 2.0 for authentication. You will need to register your application in the Intuit Developer Portal to obtain client credentials. The base URL for the API is https://quickbooks.api.intuit.com/v3/company/{realmId}. Common endpoints include /invoice, /customer, /payment, and /bill. Rate limits apply: 500 requests per minute for production apps. Always implement exponential backoff for 429 responses. ## Stripe Payment Integration Stripe provides both client-side (Stripe.js) and server-side APIs. For PCI compliance, never pass raw card numbers through your server—use Stripe Elements or the Payment Intents API. Webhooks are essential for handling asynchronous events like payment succeeded or subscription renewed. Configure your webhook endpoint to verify signatures using the Stripe-Signature header. ## ShipStation Integration The ShipStation API is REST-based. Authentication uses API key and API secret in the Authorization header. Endpoints cover orders, shipments, carriers, and warehouses. Poll for new orders or use webhooks if available for your plan. Batch operations are supported for bulk label creation. ## Twilio SMS Integration Twilio's REST API requires Account SID and Auth Token. The Messaging API endpoint is /2010-04-01/Accounts/{AccountSid}/Messages.json. For two-way messaging, configure a webhook URL to receive incoming messages. Consider using a queue for high-volume outbound SMS to avoid rate limits. # PentaCodes Technical Reference and Integration Documentation # Version 1.0 | Last Updated March 2025 # This document contains technical reference material for common integrations and deployment procedures. ## QuickBooks Online Integration The QuickBooks Online API uses OAuth 2.0 for authentication. You will need to register your application in the Intuit Developer Portal to obtain client credentials. The base URL for the API is https://quickbooks.api.intuit.com/v3/company/{realmId}. Common endpoints include /invoice, /customer, /payment, and /bill. Rate limits apply: 500 requests per minute for production apps. Always implement exponential backoff for 429 responses. ## Stripe Payment Integration Stripe provides both client-side (Stripe.js) and server-side APIs. For PCI compliance, never pass raw card numbers through your server—use Stripe Elements or the Payment Intents API. Webhooks are essential for handling asynchronous events like payment succeeded or subscription renewed. Configure your webhook endpoint to verify signatures using the Stripe-Signature header. ## ShipStation Integration The ShipStation API is REST-based. Authentication uses API key and API secret in the Authorization header. Endpoints cover orders, shipments, carriers, and warehouses. Poll for new orders or use webhooks if available for your plan. Batch operations are supported for bulk label creation. ## Twilio SMS Integration Twilio's REST API requires Account SID and Auth Token. The Messaging API endpoint is /2010-04-01/Accounts/{AccountSid}/Messages.json. For two-way messaging, configure a webhook URL to receive incoming messages. Consider using a queue for high-volume outbound SMS to avoid rate limits. # PentaCodes Technical Reference and Integration Documentation # Version 1.0 | Last Updated March 2025 # This document contains technical reference material for common integrations and deployment procedures. ## QuickBooks Online Integration The QuickBooks Online API uses OAuth 2.0 for authentication. You will need to register your application in the Intuit Developer Portal to obtain client credentials. The base URL for the API is https://quickbooks.api.intuit.com/v3/company/{realmId}. Common endpoints include /invoice, /customer, /payment, and /bill. Rate limits apply: 500 requests per minute for production apps. Always implement exponential backoff for 429 responses. ## Stripe Payment Integration Stripe provides both client-side (Stripe.js) and server-side APIs. For PCI compliance, never pass raw card numbers through your server—use Stripe Elements or the Payment Intents API. Webhooks are essential for handling asynchronous events like payment succeeded or subscription renewed. Configure your webhook endpoint to verify signatures using the Stripe-Signature header. ## ShipStation Integration The ShipStation API is REST-based. Authentication uses API key and API secret in the Authorization header. Endpoints cover orders, shipments, carriers, and warehouses. Poll for new orders or use webhooks if available for your plan. Batch operations are supported for bulk label creation. ## Twilio SMS Integration Twilio's REST API requires Account SID and Auth Token. The Messaging API endpoint is /2010-04-01/Accounts/{AccountSid}/Messages.json. For two-way messaging, configure a webhook URL to receive incoming messages. Consider using a queue for high-volume outbound SMS to avoid rate limits. # PentaCodes Technical Reference and Integration Documentation # Version 1.0 | Last Updated March 2025 # This document contains technical reference material for common integrations and deployment procedures. ## QuickBooks Online Integration The QuickBooks Online API uses OAuth 2.0 for authentication. You will need to register your application in the Intuit Developer Portal to obtain client credentials. The base URL for the API is https://quickbooks.api.intuit.com/v3/company/{realmId}. Common endpoints include /invoice, /customer, /payment, and /bill. Rate limits apply: 500 requests per minute for production apps. Always implement exponential backoff for 429 responses. ## Stripe Payment Integration Stripe provides both client-side (Stripe.js) and server-side APIs. For PCI compliance, never pass raw card numbers through your server—use Stripe Elements or the Payment Intents API. Webhooks are essential for handling asynchronous events like payment succeeded or subscription renewed. Configure your webhook endpoint to verify signatures using the Stripe-Signature header. ## ShipStation Integration The ShipStation API is REST-based. Authentication uses API key and API secret in the Authorization header. Endpoints cover orders, shipments, carriers, and warehouses. Poll for new orders or use webhooks if available for your plan. Batch operations are supported for bulk label creation. ## Twilio SMS Integration Twilio's REST API requires Account SID and Auth Token. The Messaging API endpoint is /2010-04-01/Accounts/{AccountSid}/Messages.json. For two-way messaging, configure a webhook URL to receive incoming messages. Consider using a queue for high-volume outbound SMS to avoid rate limits. # PentaCodes Technical Reference and Integration Documentation # Version 1.0 | Last Updated March 2025 # This document contains technical reference material for common integrations and deployment procedures. ## QuickBooks Online Integration The QuickBooks Online API uses OAuth 2.0 for authentication. You will need to register your application in the Intuit Developer Portal to obtain client credentials. The base URL for the API is https://quickbooks.api.intuit.com/v3/company/{realmId}. Common endpoints include /invoice, /customer, /payment, and /bill. Rate limits apply: 500 requests per minute for production apps. Always implement exponential backoff for 429 responses. ## Stripe Payment Integration Stripe provides both client-side (Stripe.js) and server-side APIs. For PCI compliance, never pass raw card numbers through your server—use Stripe Elements or the Payment Intents API. Webhooks are essential for handling asynchronous events like payment succeeded or subscription renewed. Configure your webhook endpoint to verify signatures using the Stripe-Signature header. ## ShipStation Integration The ShipStation API is REST-based. Authentication uses API key and API secret in the Authorization header. Endpoints cover orders, shipments, carriers, and warehouses. Poll for new orders or use webhooks if available for your plan. Batch operations are supported for bulk label creation. ## Twilio SMS Integration Twilio's REST API requires Account SID and Auth Token. The Messaging API endpoint is /2010-04-01/Accounts/{AccountSid}/Messages.json. For two-way messaging, configure a webhook URL to receive incoming messages. Consider using a queue for high-volume outbound SMS to avoid rate limits. # PentaCodes Technical Reference and Integration Documentation # Version 1.0 | Last Updated March 2025 # This document contains technical reference material for common integrations and deployment procedures. ## QuickBooks Online Integration The QuickBooks Online API uses OAuth 2.0 for authentication. You will need to register your application in the Intuit Developer Portal to obtain client credentials. The base URL for the API is https://quickbooks.api.intuit.com/v3/company/{realmId}. Common endpoints include /invoice, /customer, /payment, and /bill. Rate limits apply: 500 requests per minute for production apps. Always implement exponential backoff for 429 responses. ## Stripe Payment Integration Stripe provides both client-side (Stripe.js) and server-side APIs. For PCI compliance, never pass raw card numbers through your server—use Stripe Elements or the Payment Intents API. Webhooks are essential for handling asynchronous events like payment succeeded or subscription renewed. Configure your webhook endpoint to verify signatures using the Stripe-Signature header. ## ShipStation Integration The ShipStation API is REST-based. Authentication uses API key and API secret in the Authorization header. Endpoints cover orders, shipments, carriers, and warehouses. Poll for new orders or use webhooks if available for your plan. Batch operations are supported for bulk label creation. ## Twilio SMS Integration Twilio's REST API requires Account SID and Auth Token. The Messaging API endpoint is /2010-04-01/Accounts/{AccountSid}/Messages.json. For two-way messaging, configure a webhook URL to receive incoming messages. Consider using a queue for high-volume outbound SMS to avoid rate limits. # PentaCodes Technical Reference and Integration Documentation # Version 1.0 | Last Updated March 2025 # This document contains technical reference material for common integrations and deployment procedures. ## QuickBooks Online Integration The QuickBooks Online API uses OAuth 2.0 for authentication. You will need to register your application in the Intuit Developer Portal to obtain client credentials. The base URL for the API is https://quickbooks.api.intuit.com/v3/company/{realmId}. Common endpoints include /invoice, /customer, /payment, and /bill. Rate limits apply: 500 requests per minute for production apps. Always implement exponential backoff for 429 responses. ## Stripe Payment Integration Stripe provides both client-side (Stripe.js) and server-side APIs. For PCI compliance, never pass raw card numbers through your server—use Stripe Elements or the Payment Intents API. Webhooks are essential for handling asynchronous events like payment succeeded or subscription renewed. Configure your webhook endpoint to verify signatures using the Stripe-Signature header. ## ShipStation Integration The ShipStation API is REST-based. Authentication uses API key and API secret in the Authorization header. Endpoints cover orders, shipments, carriers, and warehouses. Poll for new orders or use webhooks if available for your plan. Batch operations are supported for bulk label creation. ## Twilio SMS Integration Twilio's REST API requires Account SID and Auth Token. The Messaging API endpoint is /2010-04-01/Accounts/{AccountSid}/Messages.json. For two-way messaging, configure a webhook URL to receive incoming messages. Consider using a queue for high-volume outbound SMS to avoid rate limits. # PentaCodes Technical Reference and Integration Documentation # Version 1.0 | Last Updated March 2025 # This document contains technical reference material for common integrations and deployment procedures. ## QuickBooks Online Integration The QuickBooks Online API uses OAuth 2.0 for authentication. You will need to register your application in the Intuit Developer Portal to obtain client credentials. The base URL for the API is https://quickbooks.api.intuit.com/v3/company/{realmId}. Common endpoints include /invoice, /customer, /payment, and /bill. Rate limits apply: 500 requests per minute for production apps. Always implement exponential backoff for 429 responses. ## Stripe Payment Integration Stripe provides both client-side (Stripe.js) and server-side APIs. For PCI compliance, never pass raw card numbers through your server—use Stripe Elements or the Payment Intents API. Webhooks are essential for handling asynchronous events like payment succeeded or subscription renewed. Configure your webhook endpoint to verify signatures using the Stripe-Signature header. ## ShipStation Integration The ShipStation API is REST-based. Authentication uses API key and API secret in the Authorization header. Endpoints cover orders, shipments, carriers, and warehouses. Poll for new orders or use webhooks if available for your plan. Batch operations are supported for bulk label creation. ## Twilio SMS Integration Twilio's REST API requires Account SID and Auth Token. The Messaging API endpoint is /2010-04-01/Accounts/{AccountSid}/Messages.json. For two-way messaging, configure a webhook URL to receive incoming messages. Consider using a queue for high-volume outbound SMS to avoid rate limits. # PentaCodes Technical Reference and Integration Documentation # Version 1.0 | Last Updated March 2025 # This document contains technical reference material for common integrations and deployment procedures. ## QuickBooks Online Integration The QuickBooks Online API uses OAuth 2.0 for authentication. You will need to register your application in the Intuit Developer Portal to obtain client credentials. The base URL for the API is https://quickbooks.api.intuit.com/v3/company/{realmId}. Common endpoints include /invoice, /customer, /payment, and /bill. Rate limits apply: 500 requests per minute for production apps. Always implement exponential backoff for 429 responses. ## Stripe Payment Integration Stripe provides both client-side (Stripe.js) and server-side APIs. For PCI compliance, never pass raw card numbers through your server—use Stripe Elements or the Payment Intents API. Webhooks are essential for handling asynchronous events like payment succeeded or subscription renewed. Configure your webhook endpoint to verify signatures using the Stripe-Signature header. ## ShipStation Integration The ShipStation API is REST-based. Authentication uses API key and API secret in the Authorization header. Endpoints cover orders, shipments, carriers, and warehouses. Poll for new orders or use webhooks if available for your plan. Batch operations are supported for bulk label creation. ## Twilio SMS Integration Twilio's REST API requires Account SID and Auth Token. The Messaging API endpoint is /2010-04-01/Accounts/{AccountSid}/Messages.json. For two-way messaging, configure a webhook URL to receive incoming messages. Consider using a queue for high-volume outbound SMS to avoid rate limits. # PentaCodes Technical Reference and Integration Documentation # Version 1.0 | Last Updated March 2025 # This document contains technical reference material for common integrations and deployment procedures. ## QuickBooks Online Integration The QuickBooks Online API uses OAuth 2.0 for authentication. You will need to register your application in the Intuit Developer Portal to obtain client credentials. The base URL for the API is https://quickbooks.api.intuit.com/v3/company/{realmId}. Common endpoints include /invoice, /customer, /payment, and /bill. Rate limits apply: 500 requests per minute for production apps. Always implement exponential backoff for 429 responses. ## Stripe Payment Integration Stripe provides both client-side (Stripe.js) and server-side APIs. For PCI compliance, never pass raw card numbers through your server—use Stripe Elements or the Payment Intents API. Webhooks are essential for handling asynchronous events like payment succeeded or subscription renewed. Configure your webhook endpoint to verify signatures using the Stripe-Signature header. ## ShipStation Integration The ShipStation API is REST-based. Authentication uses API key and API secret in the Authorization header. Endpoints cover orders, shipments, carriers, and warehouses. Poll for new orders or use webhooks if available for your plan. Batch operations are supported for bulk label creation. ## Twilio SMS Integration Twilio's REST API requires Account SID and Auth Token. The Messaging API endpoint is /2010-04-01/Accounts/{AccountSid}/Messages.json. For two-way messaging, configure a webhook URL to receive incoming messages. Consider using a queue for high-volume outbound SMS to avoid rate limits. # PentaCodes Technical Reference and Integration Documentation # Version 1.0 | Last Updated March 2025 # This document contains technical reference material for common integrations and deployment procedures. ## QuickBooks Online Integration The QuickBooks Online API uses OAuth 2.0 for authentication. You will need to register your application in the Intuit Developer Portal to obtain client credentials. The base URL for the API is https://quickbooks.api.intuit.com/v3/company/{realmId}. Common endpoints include /invoice, /customer, /payment, and /bill. Rate limits apply: 500 requests per minute for production apps. Always implement exponential backoff for 429 responses. ## Stripe Payment Integration Stripe provides both client-side (Stripe.js) and server-side APIs. For PCI compliance, never pass raw card numbers through your server—use Stripe Elements or the Payment Intents API. Webhooks are essential for handling asynchronous events like payment succeeded or subscription renewed. Configure your webhook endpoint to verify signatures using the Stripe-Signature header. ## ShipStation Integration The ShipStation API is REST-based. Authentication uses API key and API secret in the Authorization header. Endpoints cover orders, shipments, carriers, and warehouses. Poll for new orders or use webhooks if available for your plan. Batch operations are supported for bulk label creation. ## Twilio SMS Integration Twilio's REST API requires Account SID and Auth Token. The Messaging API endpoint is /2010-04-01/Accounts/{AccountSid}/Messages.json. For two-way messaging, configure a webhook URL to receive incoming messages. Consider using a queue for high-volume outbound SMS to avoid rate limits. # PentaCodes Technical Reference and Integration Documentation # Version 1.0 | Last Updated March 2025 # This document contains technical reference material for common integrations and deployment procedures. ## QuickBooks Online Integration The QuickBooks Online API uses OAuth 2.0 for authentication. You will need to register your application in the Intuit Developer Portal to obtain client credentials. The base URL for the API is https://quickbooks.api.intuit.com/v3/company/{realmId}. Common endpoints include /invoice, /customer, /payment, and /bill. Rate limits apply: 500 requests per minute for production apps. Always implement exponential backoff for 429 responses. ## Stripe Payment Integration Stripe provides both client-side (Stripe.js) and server-side APIs. For PCI compliance, never pass raw card numbers through your server—use Stripe Elements or the Payment Intents API. Webhooks are essential for handling asynchronous events like payment succeeded or subscription renewed. Configure your webhook endpoint to verify signatures using the Stripe-Signature header. ## ShipStation Integration The ShipStation API is REST-based. Authentication uses API key and API secret in the Authorization header. Endpoints cover orders, shipments, carriers, and warehouses. Poll for new orders or use webhooks if available for your plan. Batch operations are supported for bulk label creation. ## Twilio SMS Integration Twilio's REST API requires Account SID and Auth Token. The Messaging API endpoint is /2010-04-01/Accounts/{AccountSid}/Messages.json. For two-way messaging, configure a webhook URL to receive incoming messages. Consider using a queue for high-volume outbound SMS to avoid rate limits. # PentaCodes Technical Reference and Integration Documentation # Version 1.0 | Last Updated March 2025 # This document contains technical reference material for common integrations and deployment procedures. ## QuickBooks Online Integration The QuickBooks Online API uses OAuth 2.0 for authentication. You will need to register your application in the Intuit Developer Portal to obtain client credentials. The base URL for the API is https://quickbooks.api.intuit.com/v3/company/{realmId}. Common endpoints include /invoice, /customer, /payment, and /bill. Rate limits apply: 500 requests per minute for production apps. Always implement exponential backoff for 429 responses. ## Stripe Payment Integration Stripe provides both client-side (Stripe.js) and server-side APIs. For PCI compliance, never pass raw card numbers through your server—use Stripe Elements or the Payment Intents API. Webhooks are essential for handling asynchronous events like payment succeeded or subscription renewed. Configure your webhook endpoint to verify signatures using the Stripe-Signature header. ## ShipStation Integration The ShipStation API is REST-based. Authentication uses API key and API secret in the Authorization header. Endpoints cover orders, shipments, carriers, and warehouses. Poll for new orders or use webhooks if available for your plan. Batch operations are supported for bulk label creation. ## Twilio SMS Integration Twilio's REST API requires Account SID and Auth Token. The Messaging API endpoint is /2010-04-01/Accounts/{AccountSid}/Messages.json. For two-way messaging, configure a webhook URL to receive incoming messages. Consider using a queue for high-volume outbound SMS to avoid rate limits. # PentaCodes Technical Reference and Integration Documentation # Version 1.0 | Last Updated March 2025 # This document contains technical reference material for common integrations and deployment procedures. ## QuickBooks Online Integration The QuickBooks Online API uses OAuth 2.0 for authentication. You will need to register your application in the Intuit Developer Portal to obtain client credentials. The base URL for the API is https://quickbooks.api.intuit.com/v3/company/{realmId}. Common endpoints include /invoice, /customer, /payment, and /bill. Rate limits apply: 500 requests per minute for production apps. Always implement exponential backoff for 429 responses. ## Stripe Payment Integration Stripe provides both client-side (Stripe.js) and server-side APIs. For PCI compliance, never pass raw card numbers through your server—use Stripe Elements or the Payment Intents API. Webhooks are essential for handling asynchronous events like payment succeeded or subscription renewed. Configure your webhook endpoint to verify signatures using the Stripe-Signature header. ## ShipStation Integration The ShipStation API is REST-based. Authentication uses API key and API secret in the Authorization header. Endpoints cover orders, shipments, carriers, and warehouses. Poll for new orders or use webhooks if available for your plan. Batch operations are supported for bulk label creation. ## Twilio SMS Integration Twilio's REST API requires Account SID and Auth Token. The Messaging API endpoint is /2010-04-01/Accounts/{AccountSid}/Messages.json. For two-way messaging, configure a webhook URL to receive incoming messages. Consider using a queue for high-volume outbound SMS to avoid rate limits. # PentaCodes Technical Reference and Integration Documentation # Version 1.0 | Last Updated March 2025 # This document contains technical reference material for common integrations and deployment procedures. ## QuickBooks Online Integration The QuickBooks Online API uses OAuth 2.0 for authentication. You will need to register your application in the Intuit Developer Portal to obtain client credentials. The base URL for the API is https://quickbooks.api.intuit.com/v3/company/{realmId}. Common endpoints include /invoice, /customer, /payment, and /bill. Rate limits apply: 500 requests per minute for production apps. Always implement exponential backoff for 429 responses. ## Stripe Payment Integration Stripe provides both client-side (Stripe.js) and server-side APIs. For PCI compliance, never pass raw card numbers through your server—use Stripe Elements or the Payment Intents API. Webhooks are essential for handling asynchronous events like payment succeeded or subscription renewed. Configure your webhook endpoint to verify signatures using the Stripe-Signature header. ## ShipStation Integration The ShipStation API is REST-based. Authentication uses API key and API secret in the Authorization header. Endpoints cover orders, shipments, carriers, and warehouses. Poll for new orders or use webhooks if available for your plan. Batch operations are supported for bulk label creation. ## Twilio SMS Integration Twilio's REST API requires Account SID and Auth Token. The Messaging API endpoint is /2010-04-01/Accounts/{AccountSid}/Messages.json. For two-way messaging, configure a webhook URL to receive incoming messages. Consider using a queue for high-volume outbound SMS to avoid rate limits. # PentaCodes Technical Reference and Integration Documentation # Version 1.0 | Last Updated March 2025 # This document contains technical reference material for common integrations and deployment procedures. ## QuickBooks Online Integration The QuickBooks Online API uses OAuth 2.0 for authentication. You will need to register your application in the Intuit Developer Portal to obtain client credentials. The base URL for the API is https://quickbooks.api.intuit.com/v3/company/{realmId}. Common endpoints include /invoice, /customer, /payment, and /bill. Rate limits apply: 500 requests per minute for production apps. Always implement exponential backoff for 429 responses. ## Stripe Payment Integration Stripe provides both client-side (Stripe.js) and server-side APIs. For PCI compliance, never pass raw card numbers through your server—use Stripe Elements or the Payment Intents API. Webhooks are essential for handling asynchronous events like payment succeeded or subscription renewed. Configure your webhook endpoint to verify signatures using the Stripe-Signature header. ## ShipStation Integration The ShipStation API is REST-based. Authentication uses API key and API secret in the Authorization header. Endpoints cover orders, shipments, carriers, and warehouses. Poll for new orders or use webhooks if available for your plan. Batch operations are supported for bulk label creation. ## Twilio SMS Integration Twilio's REST API requires Account SID and Auth Token. The Messaging API endpoint is /2010-04-01/Accounts/{AccountSid}/Messages.json. For two-way messaging, configure a webhook URL to receive incoming messages. Consider using a queue for high-volume outbound SMS to avoid rate limits. # PentaCodes Technical Reference and Integration Documentation # Version 1.0 | Last Updated March 2025 # This document contains technical reference material for common integrations and deployment procedures. ## QuickBooks Online Integration The QuickBooks Online API uses OAuth 2.0 for authentication. You will need to register your application in the Intuit Developer Portal to obtain client credentials. The base URL for the API is https://quickbooks.api.intuit.com/v3/company/{realmId}. Common endpoints include /invoice, /customer, /payment, and /bill. Rate limits apply: 500 requests per minute for production apps. Always implement exponential backoff for 429 responses. ## Stripe Payment Integration Stripe provides both client-side (Stripe.js) and server-side APIs. For PCI compliance, never pass raw card numbers through your server—use Stripe Elements or the Payment Intents API. Webhooks are essential for handling asynchronous events like payment succeeded or subscription renewed. Configure your webhook endpoint to verify signatures using the Stripe-Signature header. ## ShipStation Integration The ShipStation API is REST-based. Authentication uses API key and API secret in the Authorization header. Endpoints cover orders, shipments, carriers, and warehouses. Poll for new orders or use webhooks if available for your plan. Batch operations are supported for bulk label creation. ## Twilio SMS Integration Twilio's REST API requires Account SID and Auth Token. The Messaging API endpoint is /2010-04-01/Accounts/{AccountSid}/Messages.json. For two-way messaging, configure a webhook URL to receive incoming messages. Consider using a queue for high-volume outbound SMS to avoid rate limits. # PentaCodes Technical Reference and Integration Documentation # Version 1.0 | Last Updated March 2025 # This document contains technical reference material for common integrations and deployment procedures. ## QuickBooks Online Integration The QuickBooks Online API uses OAuth 2.0 for authentication. You will need to register your application in the Intuit Developer Portal to obtain client credentials. The base URL for the API is https://quickbooks.api.intuit.com/v3/company/{realmId}. Common endpoints include /invoice, /customer, /payment, and /bill. Rate limits apply: 500 requests per minute for production apps. Always implement exponential backoff for 429 responses. ## Stripe Payment Integration Stripe provides both client-side (Stripe.js) and server-side APIs. For PCI compliance, never pass raw card numbers through your server—use Stripe Elements or the Payment Intents API. Webhooks are essential for handling asynchronous events like payment succeeded or subscription renewed. Configure your webhook endpoint to verify signatures using the Stripe-Signature header. ## ShipStation Integration The ShipStation API is REST-based. Authentication uses API key and API secret in the Authorization header. Endpoints cover orders, shipments, carriers, and warehouses. Poll for new orders or use webhooks if available for your plan. Batch operations are supported for bulk label creation. ## Twilio SMS Integration Twilio's REST API requires Account SID and Auth Token. The Messaging API endpoint is /2010-04-01/Accounts/{AccountSid}/Messages.json. For two-way messaging, configure a webhook URL to receive incoming messages. Consider using a queue for high-volume outbound SMS to avoid rate limits. # PentaCodes Technical Reference and Integration Documentation # Version 1.0 | Last Updated March 2025 # This document contains technical reference material for common integrations and deployment procedures. ## QuickBooks Online Integration The QuickBooks Online API uses OAuth 2.0 for authentication. You will need to register your application in the Intuit Developer Portal to obtain client credentials. The base URL for the API is https://quickbooks.api.intuit.com/v3/company/{realmId}. Common endpoints include /invoice, /customer, /payment, and /bill. Rate limits apply: 500 requests per minute for production apps. Always implement exponential backoff for 429 responses. ## Stripe Payment Integration Stripe provides both client-side (Stripe.js) and server-side APIs. For PCI compliance, never pass raw card numbers through your server—use Stripe Elements or the Payment Intents API. Webhooks are essential for handling asynchronous events like payment succeeded or subscription renewed. Configure your webhook endpoint to verify signatures using the Stripe-Signature header. ## ShipStation Integration The ShipStation API is REST-based. Authentication uses API key and API secret in the Authorization header. Endpoints cover orders, shipments, carriers, and warehouses. Poll for new orders or use webhooks if available for your plan. Batch operations are supported for bulk label creation. ## Twilio SMS Integration Twilio's REST API requires Account SID and Auth Token. The Messaging API endpoint is /2010-04-01/Accounts/{AccountSid}/Messages.json. For two-way messaging, configure a webhook URL to receive incoming messages. Consider using a queue for high-volume outbound SMS to avoid rate limits. # PentaCodes Technical Reference and Integration Documentation # Version 1.0 | Last Updated March 2025 # This document contains technical reference material for common integrations and deployment procedures. ## QuickBooks Online Integration The QuickBooks Online API uses OAuth 2.0 for authentication. You will need to register your application in the Intuit Developer Portal to obtain client credentials. The base URL for the API is https://quickbooks.api.intuit.com/v3/company/{realmId}. Common endpoints include /invoice, /customer, /payment, and /bill. Rate limits apply: 500 requests per minute for production apps. Always implement exponential backoff for 429 responses. ## Stripe Payment Integration Stripe provides both client-side (Stripe.js) and server-side APIs. For PCI compliance, never pass raw card numbers through your server—use Stripe Elements or the Payment Intents API. Webhooks are essential for handling asynchronous events like payment succeeded or subscription renewed. Configure your webhook endpoint to verify signatures using the Stripe-Signature header. ## ShipStation Integration The ShipStation API is REST-based. Authentication uses API key and API secret in the Authorization header. Endpoints cover orders, shipments, carriers, and warehouses. Poll for new orders or use webhooks if available for your plan. Batch operations are supported for bulk label creation. ## Twilio SMS Integration Twilio's REST API requires Account SID and Auth Token. The Messaging API endpoint is /2010-04-01/Accounts/{AccountSid}/Messages.json. For two-way messaging, configure a webhook URL to receive incoming messages. Consider using a queue for high-volume outbound SMS to avoid rate limits. # PentaCodes Technical Reference and Integration Documentation # Version 1.0 | Last Updated March 2025 # This document contains technical reference material for common integrations and deployment procedures. ## QuickBooks Online Integration The QuickBooks Online API uses OAuth 2.0 for authentication. You will need to register your application in the Intuit Developer Portal to obtain client credentials. The base URL for the API is https://quickbooks.api.intuit.com/v3/company/{realmId}. Common endpoints include /invoice, /customer, /payment, and /bill. Rate limits apply: 500 requests per minute for production apps. Always implement exponential backoff for 429 responses. ## Stripe Payment Integration Stripe provides both client-side (Stripe.js) and server-side APIs. For PCI compliance, never pass raw card numbers through your server—use Stripe Elements or the Payment Intents API. Webhooks are essential for handling asynchronous events like payment succeeded or subscription renewed. Configure your webhook endpoint to verify signatures using the Stripe-Signature header. ## ShipStation Integration The ShipStation API is REST-based. Authentication uses API key and API secret in the Authorization header. Endpoints cover orders, shipments, carriers, and warehouses. Poll for new orders or use webhooks if available for your plan. Batch operations are supported for bulk label creation. ## Twilio SMS Integration Twilio's REST API requires Account SID and Auth Token. The Messaging API endpoint is /2010-04-01/Accounts/{AccountSid}/Messages.json. For two-way messaging, configure a webhook URL to receive incoming messages. Consider using a queue for high-volume outbound SMS to avoid rate limits. # PentaCodes Technical Reference and Integration Documentation # Version 1.0 | Last Updated March 2025 # This document contains technical reference material for common integrations and deployment procedures. ## QuickBooks Online Integration The QuickBooks Online API uses OAuth 2.0 for authentication. You will need to register your application in the Intuit Developer Portal to obtain client credentials. The base URL for the API is https://quickbooks.api.intuit.com/v3/company/{realmId}. Common endpoints include /invoice, /customer, /payment, and /bill. Rate limits apply: 500 requests per minute for production apps. Always implement exponential backoff for 429 responses. ## Stripe Payment Integration Stripe provides both client-side (Stripe.js) and server-side APIs. For PCI compliance, never pass raw card numbers through your server—use Stripe Elements or the Payment Intents API. Webhooks are essential for handling asynchronous events like payment succeeded or subscription renewed. Configure your webhook endpoint to verify signatures using the Stripe-Signature header. ## ShipStation Integration The ShipStation API is REST-based. Authentication uses API key and API secret in the Authorization header. Endpoints cover orders, shipments, carriers, and warehouses. Poll for new orders or use webhooks if available for your plan. Batch operations are supported for bulk label creation. ## Twilio SMS Integration Twilio's REST API requires Account SID and Auth Token. The Messaging API endpoint is /2010-04-01/Accounts/{AccountSid}/Messages.json. For two-way messaging, configure a webhook URL to receive incoming messages. Consider using a queue for high-volume outbound SMS to avoid rate limits. # PentaCodes Technical Reference and Integration Documentation # Version 1.0 | Last Updated March 2025 # This document contains technical reference material for common integrations and deployment procedures. ## QuickBooks Online Integration The QuickBooks Online API uses OAuth 2.0 for authentication. You will need to register your application in the Intuit Developer Portal to obtain client credentials. The base URL for the API is https://quickbooks.api.intuit.com/v3/company/{realmId}. Common endpoints include /invoice, /customer, /payment, and /bill. Rate limits apply: 500 requests per minute for production apps. Always implement exponential backoff for 429 responses. ## Stripe Payment Integration Stripe provides both client-side (Stripe.js) and server-side APIs. For PCI compliance, never pass raw card numbers through your server—use Stripe Elements or the Payment Intents API. Webhooks are essential for handling asynchronous events like payment succeeded or subscription renewed. Configure your webhook endpoint to verify signatures using the Stripe-Signature header. ## ShipStation Integration The ShipStation API is REST-based. Authentication uses API key and API secret in the Authorization header. Endpoints cover orders, shipments, carriers, and warehouses. Poll for new orders or use webhooks if available for your plan. Batch operations are supported for bulk label creation. ## Twilio SMS Integration Twilio's REST API requires Account SID and Auth Token. The Messaging API endpoint is /2010-04-01/Accounts/{AccountSid}/Messages.json. For two-way messaging, configure a webhook URL to receive incoming messages. Consider using a queue for high-volume outbound SMS to avoid rate limits. # PentaCodes Technical Reference and Integration Documentation # Version 1.0 | Last Updated March 2025 # This document contains technical reference material for common integrations and deployment procedures. ## QuickBooks Online Integration The QuickBooks Online API uses OAuth 2.0 for authentication. You will need to register your application in the Intuit Developer Portal to obtain client credentials. The base URL for the API is https://quickbooks.api.intuit.com/v3/company/{realmId}. Common endpoints include /invoice, /customer, /payment, and /bill. Rate limits apply: 500 requests per minute for production apps. Always implement exponential backoff for 429 responses. ## Stripe Payment Integration Stripe provides both client-side (Stripe.js) and server-side APIs. For PCI compliance, never pass raw card numbers through your server—use Stripe Elements or the Payment Intents API. Webhooks are essential for handling asynchronous events like payment succeeded or subscription renewed. Configure your webhook endpoint to verify signatures using the Stripe-Signature header. ## ShipStation Integration The ShipStation API is REST-based. Authentication uses API key and API secret in the Authorization header. Endpoints cover orders, shipments, carriers, and warehouses. Poll for new orders or use webhooks if available for your plan. Batch operations are supported for bulk label creation. ## Twilio SMS Integration Twilio's REST API requires Account SID and Auth Token. The Messaging API endpoint is /2010-04-01/Accounts/{AccountSid}/Messages.json. For two-way messaging, configure a webhook URL to receive incoming messages. Consider using a queue for high-volume outbound SMS to avoid rate limits. # PentaCodes Technical Reference and Integration Documentation # Version 1.0 | Last Updated March 2025 # This document contains technical reference material for common integrations and deployment procedures. ## QuickBooks Online Integration The QuickBooks Online API uses OAuth 2.0 for authentication. You will need to register your application in the Intuit Developer Portal to obtain client credentials. The base URL for the API is https://quickbooks.api.intuit.com/v3/company/{realmId}. Common endpoints include /invoice, /customer, /payment, and /bill. Rate limits apply: 500 requests per minute for production apps. Always implement exponential backoff for 429 responses. ## Stripe Payment Integration Stripe provides both client-side (Stripe.js) and server-side APIs. For PCI compliance, never pass raw card numbers through your server—use Stripe Elements or the Payment Intents API. Webhooks are essential for handling asynchronous events like payment succeeded or subscription renewed. Configure your webhook endpoint to verify signatures using the Stripe-Signature header. ## ShipStation Integration The ShipStation API is REST-based. Authentication uses API key and API secret in the Authorization header. Endpoints cover orders, shipments, carriers, and warehouses. Poll for new orders or use webhooks if available for your plan. Batch operations are supported for bulk label creation. ## Twilio SMS Integration Twilio's REST API requires Account SID and Auth Token. The Messaging API endpoint is /2010-04-01/Accounts/{AccountSid}/Messages.json. For two-way messaging, configure a webhook URL to receive incoming messages. Consider using a queue for high-volume outbound SMS to avoid rate limits. # PentaCodes Technical Reference and Integration Documentation # Version 1.0 | Last Updated March 2025 # This document contains technical reference material for common integrations and deployment procedures. ## QuickBooks Online Integration The QuickBooks Online API uses OAuth 2.0 for authentication. You will need to register your application in the Intuit Developer Portal to obtain client credentials. The base URL for the API is https://quickbooks.api.intuit.com/v3/company/{realmId}. Common endpoints include /invoice, /customer, /payment, and /bill. Rate limits apply: 500 requests per minute for production apps. Always implement exponential backoff for 429 responses. ## Stripe Payment Integration Stripe provides both client-side (Stripe.js) and server-side APIs. For PCI compliance, never pass raw card numbers through your server—use Stripe Elements or the Payment Intents API. Webhooks are essential for handling asynchronous events like payment succeeded or subscription renewed. Configure your webhook endpoint to verify signatures using the Stripe-Signature header. ## ShipStation Integration The ShipStation API is REST-based. Authentication uses API key and API secret in the Authorization header. Endpoints cover orders, shipments, carriers, and warehouses. Poll for new orders or use webhooks if available for your plan. Batch operations are supported for bulk label creation. ## Twilio SMS Integration Twilio's REST API requires Account SID and Auth Token. The Messaging API endpoint is /2010-04-01/Accounts/{AccountSid}/Messages.json. For two-way messaging, configure a webhook URL to receive incoming messages. Consider using a queue for high-volume outbound SMS to avoid rate limits. # PentaCodes Technical Reference and Integration Documentation # Version 1.0 | Last Updated March 2025 # This document contains technical reference material for common integrations and deployment procedures. ## QuickBooks Online Integration The QuickBooks Online API uses OAuth 2.0 for authentication. You will need to register your application in the Intuit Developer Portal to obtain client credentials. The base URL for the API is https://quickbooks.api.intuit.com/v3/company/{realmId}. Common endpoints include /invoice, /customer, /payment, and /bill. Rate limits apply: 500 requests per minute for production apps. Always implement exponential backoff for 429 responses. ## Stripe Payment Integration Stripe provides both client-side (Stripe.js) and server-side APIs. For PCI compliance, never pass raw card numbers through your server—use Stripe Elements or the Payment Intents API. Webhooks are essential for handling asynchronous events like payment succeeded or subscription renewed. Configure your webhook endpoint to verify signatures using the Stripe-Signature header. ## ShipStation Integration The ShipStation API is REST-based. Authentication uses API key and API secret in the Authorization header. Endpoints cover orders, shipments, carriers, and warehouses. Poll for new orders or use webhooks if available for your plan. Batch operations are supported for bulk label creation. ## Twilio SMS Integration Twilio's REST API requires Account SID and Auth Token. The Messaging API endpoint is /2010-04-01/Accounts/{AccountSid}/Messages.json. For two-way messaging, configure a webhook URL to receive incoming messages. Consider using a queue for high-volume outbound SMS to avoid rate limits. # PentaCodes Technical Reference and Integration Documentation # Version 1.0 | Last Updated March 2025 # This document contains technical reference material for common integrations and deployment procedures. ## QuickBooks Online Integration The QuickBooks Online API uses OAuth 2.0 for authentication. You will need to register your application in the Intuit Developer Portal to obtain client credentials. The base URL for the API is https://quickbooks.api.intuit.com/v3/company/{realmId}. Common endpoints include /invoice, /customer, /payment, and /bill. Rate limits apply: 500 requests per minute for production apps. Always implement exponential backoff for 429 responses. ## Stripe Payment Integration Stripe provides both client-side (Stripe.js) and server-side APIs. For PCI compliance, never pass raw card numbers through your server—use Stripe Elements or the Payment Intents API. Webhooks are essential for handling asynchronous events like payment succeeded or subscription renewed. Configure your webhook endpoint to verify signatures using the Stripe-Signature header. ## ShipStation Integration The ShipStation API is REST-based. Authentication uses API key and API secret in the Authorization header. Endpoints cover orders, shipments, carriers, and warehouses. Poll for new orders or use webhooks if available for your plan. Batch operations are supported for bulk label creation. ## Twilio SMS Integration Twilio's REST API requires Account SID and Auth Token. The Messaging API endpoint is /2010-04-01/Accounts/{AccountSid}/Messages.json. For two-way messaging, configure a webhook URL to receive incoming messages. Consider using a queue for high-volume outbound SMS to avoid rate limits. # PentaCodes Technical Reference and Integration Documentation # Version 1.0 | Last Updated March 2025 # This document contains technical reference material for common integrations and deployment procedures. ## QuickBooks Online Integration The QuickBooks Online API uses OAuth 2.0 for authentication. You will need to register your application in the Intuit Developer Portal to obtain client credentials. The base URL for the API is https://quickbooks.api.intuit.com/v3/company/{realmId}. Common endpoints include /invoice, /customer, /payment, and /bill. Rate limits apply: 500 requests per minute for production apps. Always implement exponential backoff for 429 responses. ## Stripe Payment Integration Stripe provides both client-side (Stripe.js) and server-side APIs. For PCI compliance, never pass raw card numbers through your server—use Stripe Elements or the Payment Intents API. Webhooks are essential for handling asynchronous events like payment succeeded or subscription renewed. Configure your webhook endpoint to verify signatures using the Stripe-Signature header. ## ShipStation Integration The ShipStation API is REST-based. Authentication uses API key and API secret in the Authorization header. Endpoints cover orders, shipments, carriers, and warehouses. Poll for new orders or use webhooks if available for your plan. Batch operations are supported for bulk label creation. ## Twilio SMS Integration Twilio's REST API requires Account SID and Auth Token. The Messaging API endpoint is /2010-04-01/Accounts/{AccountSid}/Messages.json. For two-way messaging, configure a webhook URL to receive incoming messages. Consider using a queue for high-volume outbound SMS to avoid rate limits. # PentaCodes Technical Reference and Integration Documentation # Version 1.0 | Last Updated March 2025 # This document contains technical reference material for common integrations and deployment procedures. ## QuickBooks Online Integration The QuickBooks Online API uses OAuth 2.0 for authentication. You will need to register your application in the Intuit Developer Portal to obtain client credentials. The base URL for the API is https://quickbooks.api.intuit.com/v3/company/{realmId}. Common endpoints include /invoice, /customer, /payment, and /bill. Rate limits apply: 500 requests per minute for production apps. Always implement exponential backoff for 429 responses. ## Stripe Payment Integration Stripe provides both client-side (Stripe.js) and server-side APIs. For PCI compliance, never pass raw card numbers through your server—use Stripe Elements or the Payment Intents API. Webhooks are essential for handling asynchronous events like payment succeeded or subscription renewed. Configure your webhook endpoint to verify signatures using the Stripe-Signature header. ## ShipStation Integration The ShipStation API is REST-based. Authentication uses API key and API secret in the Authorization header. Endpoints cover orders, shipments, carriers, and warehouses. Poll for new orders or use webhooks if available for your plan. Batch operations are supported for bulk label creation. ## Twilio SMS Integration Twilio's REST API requires Account SID and Auth Token. The Messaging API endpoint is /2010-04-01/Accounts/{AccountSid}/Messages.json. For two-way messaging, configure a webhook URL to receive incoming messages. Consider using a queue for high-volume outbound SMS to avoid rate limits. # PentaCodes Technical Reference and Integration Documentation # Version 1.0 | Last Updated March 2025 # This document contains technical reference material for common integrations and deployment procedures. ## QuickBooks Online Integration The QuickBooks Online API uses OAuth 2.0 for authentication. You will need to register your application in the Intuit Developer Portal to obtain client credentials. The base URL for the API is https://quickbooks.api.intuit.com/v3/company/{realmId}. Common endpoints include /invoice, /customer, /payment, and /bill. Rate limits apply: 500 requests per minute for production apps. Always implement exponential backoff for 429 responses. ## Stripe Payment Integration Stripe provides both client-side (Stripe.js) and server-side APIs. For PCI compliance, never pass raw card numbers through your server—use Stripe Elements or the Payment Intents API. Webhooks are essential for handling asynchronous events like payment succeeded or subscription renewed. Configure your webhook endpoint to verify signatures using the Stripe-Signature header. ## ShipStation Integration The ShipStation API is REST-based. Authentication uses API key and API secret in the Authorization header. Endpoints cover orders, shipments, carriers, and warehouses. Poll for new orders or use webhooks if available for your plan. Batch operations are supported for bulk label creation. ## Twilio SMS Integration Twilio's REST API requires Account SID and Auth Token. The Messaging API endpoint is /2010-04-01/Accounts/{AccountSid}/Messages.json. For two-way messaging, configure a webhook URL to receive incoming messages. Consider using a queue for high-volume outbound SMS to avoid rate limits. # PentaCodes Technical Reference and Integration Documentation # Version 1.0 | Last Updated March 2025 # This document contains technical reference material for common integrations and deployment procedures. ## QuickBooks Online Integration The QuickBooks Online API uses OAuth 2.0 for authentication. You will need to register your application in the Intuit Developer Portal to obtain client credentials. The base URL for the API is https://quickbooks.api.intuit.com/v3/company/{realmId}. Common endpoints include /invoice, /customer, /payment, and /bill. Rate limits apply: 500 requests per minute for production apps. Always implement exponential backoff for 429 responses. ## Stripe Payment Integration Stripe provides both client-side (Stripe.js) and server-side APIs. For PCI compliance, never pass raw card numbers through your server—use Stripe Elements or the Payment Intents API. Webhooks are essential for handling asynchronous events like payment succeeded or subscription renewed. Configure your webhook endpoint to verify signatures using the Stripe-Signature header. ## ShipStation Integration The ShipStation API is REST-based. Authentication uses API key and API secret in the Authorization header. Endpoints cover orders, shipments, carriers, and warehouses. Poll for new orders or use webhooks if available for your plan. Batch operations are supported for bulk label creation. ## Twilio SMS Integration Twilio's REST API requires Account SID and Auth Token. The Messaging API endpoint is /2010-04-01/Accounts/{AccountSid}/Messages.json. For two-way messaging, configure a webhook URL to receive incoming messages. Consider using a queue for high-volume outbound SMS to avoid rate limits. # PentaCodes Technical Reference and Integration Documentation # Version 1.0 | Last Updated March 2025 # This document contains technical reference material for common integrations and deployment procedures. ## QuickBooks Online Integration The QuickBooks Online API uses OAuth 2.0 for authentication. You will need to register your application in the Intuit Developer Portal to obtain client credentials. The base URL for the API is https://quickbooks.api.intuit.com/v3/company/{realmId}. Common endpoints include /invoice, /customer, /payment, and /bill. Rate limits apply: 500 requests per minute for production apps. Always implement exponential backoff for 429 responses. ## Stripe Payment Integration Stripe provides both client-side (Stripe.js) and server-side APIs. For PCI compliance, never pass raw card numbers through your server—use Stripe Elements or the Payment Intents API. Webhooks are essential for handling asynchronous events like payment succeeded or subscription renewed. Configure your webhook endpoint to verify signatures using the Stripe-Signature header. ## ShipStation Integration The ShipStation API is REST-based. Authentication uses API key and API secret in the Authorization header. Endpoints cover orders, shipments, carriers, and warehouses. Poll for new orders or use webhooks if available for your plan. Batch operations are supported for bulk label creation. ## Twilio SMS Integration Twilio's REST API requires Account SID and Auth Token. The Messaging API endpoint is /2010-04-01/Accounts/{AccountSid}/Messages.json. For two-way messaging, configure a webhook URL to receive incoming messages. Consider using a queue for high-volume outbound SMS to avoid rate limits. # PentaCodes Technical Reference and Integration Documentation # Version 1.0 | Last Updated March 2025 # This document contains technical reference material for common integrations and deployment procedures. ## QuickBooks Online Integration The QuickBooks Online API uses OAuth 2.0 for authentication. You will need to register your application in the Intuit Developer Portal to obtain client credentials. The base URL for the API is https://quickbooks.api.intuit.com/v3/company/{realmId}. Common endpoints include /invoice, /customer, /payment, and /bill. Rate limits apply: 500 requests per minute for production apps. Always implement exponential backoff for 429 responses. ## Stripe Payment Integration Stripe provides both client-side (Stripe.js) and server-side APIs. For PCI compliance, never pass raw card numbers through your server—use Stripe Elements or the Payment Intents API. Webhooks are essential for handling asynchronous events like payment succeeded or subscription renewed. Configure your webhook endpoint to verify signatures using the Stripe-Signature header. ## ShipStation Integration The ShipStation API is REST-based. Authentication uses API key and API secret in the Authorization header. Endpoints cover orders, shipments, carriers, and warehouses. Poll for new orders or use webhooks if available for your plan. Batch operations are supported for bulk label creation. ## Twilio SMS Integration Twilio's REST API requires Account SID and Auth Token. The Messaging API endpoint is /2010-04-01/Accounts/{AccountSid}/Messages.json. For two-way messaging, configure a webhook URL to receive incoming messages. Consider using a queue for high-volume outbound SMS to avoid rate limits. # PentaCodes Technical Reference and Integration Documentation # Version 1.0 | Last Updated March 2025 # This document contains technical reference material for common integrations and deployment procedures. ## QuickBooks Online Integration The QuickBooks Online API uses OAuth 2.0 for authentication. You will need to register your application in the Intuit Developer Portal to obtain client credentials. The base URL for the API is https://quickbooks.api.intuit.com/v3/company/{realmId}. Common endpoints include /invoice, /customer, /payment, and /bill. Rate limits apply: 500 requests per minute for production apps. Always implement exponential backoff for 429 responses. ## Stripe Payment Integration Stripe provides both client-side (Stripe.js) and server-side APIs. For PCI compliance, never pass raw card numbers through your server—use Stripe Elements or the Payment Intents API. Webhooks are essential for handling asynchronous events like payment succeeded or subscription renewed. Configure your webhook endpoint to verify signatures using the Stripe-Signature header. ## ShipStation Integration The ShipStation API is REST-based. Authentication uses API key and API secret in the Authorization header. Endpoints cover orders, shipments, carriers, and warehouses. Poll for new orders or use webhooks if available for your plan. Batch operations are supported for bulk label creation. ## Twilio SMS Integration Twilio's REST API requires Account SID and Auth Token. The Messaging API endpoint is /2010-04-01/Accounts/{AccountSid}/Messages.json. For two-way messaging, configure a webhook URL to receive incoming messages. Consider using a queue for high-volume outbound SMS to avoid rate limits. # PentaCodes Technical Reference and Integration Documentation # Version 1.0 | Last Updated March 2025 # This document contains technical reference material for common integrations and deployment procedures. ## QuickBooks Online Integration The QuickBooks Online API uses OAuth 2.0 for authentication. You will need to register your application in the Intuit Developer Portal to obtain client credentials. The base URL for the API is https://quickbooks.api.intuit.com/v3/company/{realmId}. Common endpoints include /invoice, /customer, /payment, and /bill. Rate limits apply: 500 requests per minute for production apps. Always implement exponential backoff for 429 responses. ## Stripe Payment Integration Stripe provides both client-side (Stripe.js) and server-side APIs. For PCI compliance, never pass raw card numbers through your server—use Stripe Elements or the Payment Intents API. Webhooks are essential for handling asynchronous events like payment succeeded or subscription renewed. Configure your webhook endpoint to verify signatures using the Stripe-Signature header. ## ShipStation Integration The ShipStation API is REST-based. Authentication uses API key and API secret in the Authorization header. Endpoints cover orders, shipments, carriers, and warehouses. Poll for new orders or use webhooks if available for your plan. Batch operations are supported for bulk label creation. ## Twilio SMS Integration Twilio's REST API requires Account SID and Auth Token. The Messaging API endpoint is /2010-04-01/Accounts/{AccountSid}/Messages.json. For two-way messaging, configure a webhook URL to receive incoming messages. Consider using a queue for high-volume outbound SMS to avoid rate limits. # PentaCodes Technical Reference and Integration Documentation # Version 1.0 | Last Updated March 2025 # This document contains technical reference material for common integrations and deployment procedures. ## QuickBooks Online Integration The QuickBooks Online API uses OAuth 2.0 for authentication. You will need to register your application in the Intuit Developer Portal to obtain client credentials. The base URL for the API is https://quickbooks.api.intuit.com/v3/company/{realmId}. Common endpoints include /invoice, /customer, /payment, and /bill. Rate limits apply: 500 requests per minute for production apps. Always implement exponential backoff for 429 responses. ## Stripe Payment Integration Stripe provides both client-side (Stripe.js) and server-side APIs. For PCI compliance, never pass raw card numbers through your server—use Stripe Elements or the Payment Intents API. Webhooks are essential for handling asynchronous events like payment succeeded or subscription renewed. Configure your webhook endpoint to verify signatures using the Stripe-Signature header. ## ShipStation Integration The ShipStation API is REST-based. Authentication uses API key and API secret in the Authorization header. Endpoints cover orders, shipments, carriers, and warehouses. Poll for new orders or use webhooks if available for your plan. Batch operations are supported for bulk label creation. ## Twilio SMS Integration Twilio's REST API requires Account SID and Auth Token. The Messaging API endpoint is /2010-04-01/Accounts/{AccountSid}/Messages.json. For two-way messaging, configure a webhook URL to receive incoming messages. Consider using a queue for high-volume outbound SMS to avoid rate limits. # PentaCodes Technical Reference and Integration Documentation # Version 1.0 | Last Updated March 2025 # This document contains technical reference material for common integrations and deployment procedures. ## QuickBooks Online Integration The QuickBooks Online API uses OAuth 2.0 for authentication. You will need to register your application in the Intuit Developer Portal to obtain client credentials. The base URL for the API is https://quickbooks.api.intuit.com/v3/company/{realmId}. Common endpoints include /invoice, /customer, /payment, and /bill. Rate limits apply: 500 requests per minute for production apps. Always implement exponential backoff for 429 responses. ## Stripe Payment Integration Stripe provides both client-side (Stripe.js) and server-side APIs. For PCI compliance, never pass raw card numbers through your server—use Stripe Elements or the Payment Intents API. Webhooks are essential for handling asynchronous events like payment succeeded or subscription renewed. Configure your webhook endpoint to verify signatures using the Stripe-Signature header. ## ShipStation Integration The ShipStation API is REST-based. Authentication uses API key and API secret in the Authorization header. Endpoints cover orders, shipments, carriers, and warehouses. Poll for new orders or use webhooks if available for your plan. Batch operations are supported for bulk label creation. ## Twilio SMS Integration Twilio's REST API requires Account SID and Auth Token. The Messaging API endpoint is /2010-04-01/Accounts/{AccountSid}/Messages.json. For two-way messaging, configure a webhook URL to receive incoming messages. Consider using a queue for high-volume outbound SMS to avoid rate limits. # PentaCodes Technical Reference and Integration Documentation # Version 1.0 | Last Updated March 2025 # This document contains technical reference material for common integrations and deployment procedures. ## QuickBooks Online Integration The QuickBooks Online API uses OAuth 2.0 for authentication. You will need to register your application in the Intuit Developer Portal to obtain client credentials. The base URL for the API is https://quickbooks.api.intuit.com/v3/company/{realmId}. Common endpoints include /invoice, /customer, /payment, and /bill. Rate limits apply: 500 requests per minute for production apps. Always implement exponential backoff for 429 responses. ## Stripe Payment Integration Stripe provides both client-side (Stripe.js) and server-side APIs. For PCI compliance, never pass raw card numbers through your server—use Stripe Elements or the Payment Intents API. Webhooks are essential for handling asynchronous events like payment succeeded or subscription renewed. Configure your webhook endpoint to verify signatures using the Stripe-Signature header. ## ShipStation Integration The ShipStation API is REST-based. Authentication uses API key and API secret in the Authorization header. Endpoints cover orders, shipments, carriers, and warehouses. Poll for new orders or use webhooks if available for your plan. Batch operations are supported for bulk label creation. ## Twilio SMS Integration Twilio's REST API requires Account SID and Auth Token. The Messaging API endpoint is /2010-04-01/Accounts/{AccountSid}/Messages.json. For two-way messaging, configure a webhook URL to receive incoming messages. Consider using a queue for high-volume outbound SMS to avoid rate limits. # PentaCodes Technical Reference and Integration Documentation # Version 1.0 | Last Updated March 2025 # This document contains technical reference material for common integrations and deployment procedures. ## QuickBooks Online Integration The QuickBooks Online API uses OAuth 2.0 for authentication. You will need to register your application in the Intuit Developer Portal to obtain client credentials. The base URL for the API is https://quickbooks.api.intuit.com/v3/company/{realmId}. Common endpoints include /invoice, /customer, /payment, and /bill. Rate limits apply: 500 requests per minute for production apps. Always implement exponential backoff for 429 responses. ## Stripe Payment Integration Stripe provides both client-side (Stripe.js) and server-side APIs. For PCI compliance, never pass raw card numbers through your server—use Stripe Elements or the Payment Intents API. Webhooks are essential for handling asynchronous events like payment succeeded or subscription renewed. Configure your webhook endpoint to verify signatures using the Stripe-Signature header. ## ShipStation Integration The ShipStation API is REST-based. Authentication uses API key and API secret in the Authorization header. Endpoints cover orders, shipments, carriers, and warehouses. Poll for new orders or use webhooks if available for your plan. Batch operations are supported for bulk label creation. ## Twilio SMS Integration Twilio's REST API requires Account SID and Auth Token. The Messaging API endpoint is /2010-04-01/Accounts/{AccountSid}/Messages.json. For two-way messaging, configure a webhook URL to receive incoming messages. Consider using a queue for high-volume outbound SMS to avoid rate limits. # PentaCodes Technical Reference and Integration Documentation # Version 1.0 | Last Updated March 2025 # This document contains technical reference material for common integrations and deployment procedures. ## QuickBooks Online Integration The QuickBooks Online API uses OAuth 2.0 for authentication. You will need to register your application in the Intuit Developer Portal to obtain client credentials. The base URL for the API is https://quickbooks.api.intuit.com/v3/company/{realmId}. Common endpoints include /invoice, /customer, /payment, and /bill. Rate limits apply: 500 requests per minute for production apps. Always implement exponential backoff for 429 responses. ## Stripe Payment Integration Stripe provides both client-side (Stripe.js) and server-side APIs. For PCI compliance, never pass raw card numbers through your server—use Stripe Elements or the Payment Intents API. Webhooks are essential for handling asynchronous events like payment succeeded or subscription renewed. Configure your webhook endpoint to verify signatures using the Stripe-Signature header. ## ShipStation Integration The ShipStation API is REST-based. Authentication uses API key and API secret in the Authorization header. Endpoints cover orders, shipments, carriers, and warehouses. Poll for new orders or use webhooks if available for your plan. Batch operations are supported for bulk label creation. ## Twilio SMS Integration Twilio's REST API requires Account SID and Auth Token. The Messaging API endpoint is /2010-04-01/Accounts/{AccountSid}/Messages.json. For two-way messaging, configure a webhook URL to receive incoming messages. Consider using a queue for high-volume outbound SMS to avoid rate limits. # PentaCodes Technical Reference and Integration Documentation # Version 1.0 | Last Updated March 2025 # This document contains technical reference material for common integrations and deployment procedures. ## QuickBooks Online Integration The QuickBooks Online API uses OAuth 2.0 for authentication. You will need to register your application in the Intuit Developer Portal to obtain client credentials. The base URL for the API is https://quickbooks.api.intuit.com/v3/company/{realmId}. Common endpoints include /invoice, /customer, /payment, and /bill. Rate limits apply: 500 requests per minute for production apps. Always implement exponential backoff for 429 responses. ## Stripe Payment Integration Stripe provides both client-side (Stripe.js) and server-side APIs. For PCI compliance, never pass raw card numbers through your server—use Stripe Elements or the Payment Intents API. Webhooks are essential for handling asynchronous events like payment succeeded or subscription renewed. Configure your webhook endpoint to verify signatures using the Stripe-Signature header. ## ShipStation Integration The ShipStation API is REST-based. Authentication uses API key and API secret in the Authorization header. Endpoints cover orders, shipments, carriers, and warehouses. Poll for new orders or use webhooks if available for your plan. Batch operations are supported for bulk label creation. ## Twilio SMS Integration Twilio's REST API requires Account SID and Auth Token. The Messaging API endpoint is /2010-04-01/Accounts/{AccountSid}/Messages.json. For two-way messaging, configure a webhook URL to receive incoming messages. Consider using a queue for high-volume outbound SMS to avoid rate limits. # PentaCodes Technical Reference and Integration Documentation # Version 1.0 | Last Updated March 2025 # This document contains technical reference material for common integrations and deployment procedures. ## QuickBooks Online Integration The QuickBooks Online API uses OAuth 2.0 for authentication. You will need to register your application in the Intuit Developer Portal to obtain client credentials. The base URL for the API is https://quickbooks.api.intuit.com/v3/company/{realmId}. Common endpoints include /invoice, /customer, /payment, and /bill. Rate limits apply: 500 requests per minute for production apps. Always implement exponential backoff for 429 responses. ## Stripe Payment Integration Stripe provides both client-side (Stripe.js) and server-side APIs. For PCI compliance, never pass raw card numbers through your server—use Stripe Elements or the Payment Intents API. Webhooks are essential for handling asynchronous events like payment succeeded or subscription renewed. Configure your webhook endpoint to verify signatures using the Stripe-Signature header. ## ShipStation Integration The ShipStation API is REST-based. Authentication uses API key and API secret in the Authorization header. Endpoints cover orders, shipments, carriers, and warehouses. Poll for new orders or use webhooks if available for your plan. Batch operations are supported for bulk label creation. ## Twilio SMS Integration Twilio's REST API requires Account SID and Auth Token. The Messaging API endpoint is /2010-04-01/Accounts/{AccountSid}/Messages.json. For two-way messaging, configure a webhook URL to receive incoming messages. Consider using a queue for high-volume outbound SMS to avoid rate limits. # PentaCodes Technical Reference and Integration Documentation # Version 1.0 | Last Updated March 2025 # This document contains technical reference material for common integrations and deployment procedures. ## QuickBooks Online Integration The QuickBooks Online API uses OAuth 2.0 for authentication. You will need to register your application in the Intuit Developer Portal to obtain client credentials. The base URL for the API is https://quickbooks.api.intuit.com/v3/company/{realmId}. Common endpoints include /invoice, /customer, /payment, and /bill. Rate limits apply: 500 requests per minute for production apps. Always implement exponential backoff for 429 responses. ## Stripe Payment Integration Stripe provides both client-side (Stripe.js) and server-side APIs. For PCI compliance, never pass raw card numbers through your server—use Stripe Elements or the Payment Intents API. Webhooks are essential for handling asynchronous events like payment succeeded or subscription renewed. Configure your webhook endpoint to verify signatures using the Stripe-Signature header. ## ShipStation Integration The ShipStation API is REST-based. Authentication uses API key and API secret in the Authorization header. Endpoints cover orders, shipments, carriers, and warehouses. Poll for new orders or use webhooks if available for your plan. Batch operations are supported for bulk label creation. ## Twilio SMS Integration Twilio's REST API requires Account SID and Auth Token. The Messaging API endpoint is /2010-04-01/Accounts/{AccountSid}/Messages.json. For two-way messaging, configure a webhook URL to receive incoming messages. Consider using a queue for high-volume outbound SMS to avoid rate limits. # PentaCodes Technical Reference and Integration Documentation # Version 1.0 | Last Updated March 2025 # This document contains technical reference material for common integrations and deployment procedures. ## QuickBooks Online Integration The QuickBooks Online API uses OAuth 2.0 for authentication. You will need to register your application in the Intuit Developer Portal to obtain client credentials. The base URL for the API is https://quickbooks.api.intuit.com/v3/company/{realmId}. Common endpoints include /invoice, /customer, /payment, and /bill. Rate limits apply: 500 requests per minute for production apps. Always implement exponential backoff for 429 responses. ## Stripe Payment Integration Stripe provides both client-side (Stripe.js) and server-side APIs. For PCI compliance, never pass raw card numbers through your server—use Stripe Elements or the Payment Intents API. Webhooks are essential for handling asynchronous events like payment succeeded or subscription renewed. Configure your webhook endpoint to verify signatures using the Stripe-Signature header. ## ShipStation Integration The ShipStation API is REST-based. Authentication uses API key and API secret in the Authorization header. Endpoints cover orders, shipments, carriers, and warehouses. Poll for new orders or use webhooks if available for your plan. Batch operations are supported for bulk label creation. ## Twilio SMS Integration Twilio's REST API requires Account SID and Auth Token. The Messaging API endpoint is /2010-04-01/Accounts/{AccountSid}/Messages.json. For two-way messaging, configure a webhook URL to receive incoming messages. Consider using a queue for high-volume outbound SMS to avoid rate limits. # PentaCodes Technical Reference and Integration Documentation # Version 1.0 | Last Updated March 2025 # This document contains technical reference material for common integrations and deployment procedures. ## QuickBooks Online Integration The QuickBooks Online API uses OAuth 2.0 for authentication. You will need to register your application in the Intuit Developer Portal to obtain client credentials. The base URL for the API is https://quickbooks.api.intuit.com/v3/company/{realmId}. Common endpoints include /invoice, /customer, /payment, and /bill. Rate limits apply: 500 requests per minute for production apps. Always implement exponential backoff for 429 responses. ## Stripe Payment Integration Stripe provides both client-side (Stripe.js) and server-side APIs. For PCI compliance, never pass raw card numbers through your server—use Stripe Elements or the Payment Intents API. Webhooks are essential for handling asynchronous events like payment succeeded or subscription renewed. Configure your webhook endpoint to verify signatures using the Stripe-Signature header. ## ShipStation Integration The ShipStation API is REST-based. Authentication uses API key and API secret in the Authorization header. Endpoints cover orders, shipments, carriers, and warehouses. Poll for new orders or use webhooks if available for your plan. Batch operations are supported for bulk label creation. ## Twilio SMS Integration Twilio's REST API requires Account SID and Auth Token. The Messaging API endpoint is /2010-04-01/Accounts/{AccountSid}/Messages.json. For two-way messaging, configure a webhook URL to receive incoming messages. Consider using a queue for high-volume outbound SMS to avoid rate limits. # PentaCodes Technical Reference and Integration Documentation # Version 1.0 | Last Updated March 2025 # This document contains technical reference material for common integrations and deployment procedures. ## QuickBooks Online Integration The QuickBooks Online API uses OAuth 2.0 for authentication. You will need to register your application in the Intuit Developer Portal to obtain client credentials. The base URL for the API is https://quickbooks.api.intuit.com/v3/company/{realmId}. Common endpoints include /invoice, /customer, /payment, and /bill. Rate limits apply: 500 requests per minute for production apps. Always implement exponential backoff for 429 responses. ## Stripe Payment Integration Stripe provides both client-side (Stripe.js) and server-side APIs. For PCI compliance, never pass raw card numbers through your server—use Stripe Elements or the Payment Intents API. Webhooks are essential for handling asynchronous events like payment succeeded or subscription renewed. Configure your webhook endpoint to verify signatures using the Stripe-Signature header. ## ShipStation Integration The ShipStation API is REST-based. Authentication uses API key and API secret in the Authorization header. Endpoints cover orders, shipments, carriers, and warehouses. Poll for new orders or use webhooks if available for your plan. Batch operations are supported for bulk label creation. ## Twilio SMS Integration Twilio's REST API requires Account SID and Auth Token. The Messaging API endpoint is /2010-04-01/Accounts/{AccountSid}/Messages.json. For two-way messaging, configure a webhook URL to receive incoming messages. Consider using a queue for high-volume outbound SMS to avoid rate limits. # PentaCodes Technical Reference and Integration Documentation # Version 1.0 | Last Updated March 2025 # This document contains technical reference material for common integrations and deployment procedures. ## QuickBooks Online Integration The QuickBooks Online API uses OAuth 2.0 for authentication. You will need to register your application in the Intuit Developer Portal to obtain client credentials. The base URL for the API is https://quickbooks.api.intuit.com/v3/company/{realmId}. Common endpoints include /invoice, /customer, /payment, and /bill. Rate limits apply: 500 requests per minute for production apps. Always implement exponential backoff for 429 responses. ## Stripe Payment Integration Stripe provides both client-side (Stripe.js) and server-side APIs. For PCI compliance, never pass raw card numbers through your server—use Stripe Elements or the Payment Intents API. Webhooks are essential for handling asynchronous events like payment succeeded or subscription renewed. Configure your webhook endpoint to verify signatures using the Stripe-Signature header. ## ShipStation Integration The ShipStation API is REST-based. Authentication uses API key and API secret in the Authorization header. Endpoints cover orders, shipments, carriers, and warehouses. Poll for new orders or use webhooks if available for your plan. Batch operations are supported for bulk label creation. ## Twilio SMS Integration Twilio's REST API requires Account SID and Auth Token. The Messaging API endpoint is /2010-04-01/Accounts/{AccountSid}/Messages.json. For two-way messaging, configure a webhook URL to receive incoming messages. Consider using a queue for high-volume outbound SMS to avoid rate limits. # PentaCodes Technical Reference and Integration Documentation # Version 1.0 | Last Updated March 2025 # This document contains technical reference material for common integrations and deployment procedures. ## QuickBooks Online Integration The QuickBooks Online API uses OAuth 2.0 for authentication. You will need to register your application in the Intuit Developer Portal to obtain client credentials. The base URL for the API is https://quickbooks.api.intuit.com/v3/company/{realmId}. Common endpoints include /invoice, /customer, /payment, and /bill. Rate limits apply: 500 requests per minute for production apps. Always implement exponential backoff for 429 responses. ## Stripe Payment Integration Stripe provides both client-side (Stripe.js) and server-side APIs. For PCI compliance, never pass raw card numbers through your server—use Stripe Elements or the Payment Intents API. Webhooks are essential for handling asynchronous events like payment succeeded or subscription renewed. Configure your webhook endpoint to verify signatures using the Stripe-Signature header. ## ShipStation Integration The ShipStation API is REST-based. Authentication uses API key and API secret in the Authorization header. Endpoints cover orders, shipments, carriers, and warehouses. Poll for new orders or use webhooks if available for your plan. Batch operations are supported for bulk label creation. ## Twilio SMS Integration Twilio's REST API requires Account SID and Auth Token. The Messaging API endpoint is /2010-04-01/Accounts/{AccountSid}/Messages.json. For two-way messaging, configure a webhook URL to receive incoming messages. Consider using a queue for high-volume outbound SMS to avoid rate limits. # PentaCodes Technical Reference and Integration Documentation # Version 1.0 | Last Updated March 2025 # This document contains technical reference material for common integrations and deployment procedures. ## QuickBooks Online Integration The QuickBooks Online API uses OAuth 2.0 for authentication. You will need to register your application in the Intuit Developer Portal to obtain client credentials. The base URL for the API is https://quickbooks.api.intuit.com/v3/company/{realmId}. Common endpoints include /invoice, /customer, /payment, and /bill. Rate limits apply: 500 requests per minute for production apps. Always implement exponential backoff for 429 responses. ## Stripe Payment Integration Stripe provides both client-side (Stripe.js) and server-side APIs. For PCI compliance, never pass raw card numbers through your server—use Stripe Elements or the Payment Intents API. Webhooks are essential for handling asynchronous events like payment succeeded or subscription renewed. Configure your webhook endpoint to verify signatures using the Stripe-Signature header. ## ShipStation Integration The ShipStation API is REST-based. Authentication uses API key and API secret in the Authorization header. Endpoints cover orders, shipments, carriers, and warehouses. Poll for new orders or use webhooks if available for your plan. Batch operations are supported for bulk label creation. ## Twilio SMS Integration Twilio's REST API requires Account SID and Auth Token. The Messaging API endpoint is /2010-04-01/Accounts/{AccountSid}/Messages.json. For two-way messaging, configure a webhook URL to receive incoming messages. Consider using a queue for high-volume outbound SMS to avoid rate limits. # PentaCodes Technical Reference and Integration Documentation # Version 1.0 | Last Updated March 2025 # This document contains technical reference material for common integrations and deployment procedures. ## QuickBooks Online Integration The QuickBooks Online API uses OAuth 2.0 for authentication. You will need to register your application in the Intuit Developer Portal to obtain client credentials. The base URL for the API is https://quickbooks.api.intuit.com/v3/company/{realmId}. Common endpoints include /invoice, /customer, /payment, and /bill. Rate limits apply: 500 requests per minute for production apps. Always implement exponential backoff for 429 responses. ## Stripe Payment Integration Stripe provides both client-side (Stripe.js) and server-side APIs. For PCI compliance, never pass raw card numbers through your server—use Stripe Elements or the Payment Intents API. Webhooks are essential for handling asynchronous events like payment succeeded or subscription renewed. Configure your webhook endpoint to verify signatures using the Stripe-Signature header. ## ShipStation Integration The ShipStation API is REST-based. Authentication uses API key and API secret in the Authorization header. Endpoints cover orders, shipments, carriers, and warehouses. Poll for new orders or use webhooks if available for your plan. Batch operations are supported for bulk label creation. ## Twilio SMS Integration Twilio's REST API requires Account SID and Auth Token. The Messaging API endpoint is /2010-04-01/Accounts/{AccountSid}/Messages.json. For two-way messaging, configure a webhook URL to receive incoming messages. Consider using a queue for high-volume outbound SMS to avoid rate limits. # PentaCodes Technical Reference and Integration Documentation # Version 1.0 | Last Updated March 2025 # This document contains technical reference material for common integrations and deployment procedures. ## QuickBooks Online Integration The QuickBooks Online API uses OAuth 2.0 for authentication. You will need to register your application in the Intuit Developer Portal to obtain client credentials. The base URL for the API is https://quickbooks.api.intuit.com/v3/company/{realmId}. Common endpoints include /invoice, /customer, /payment, and /bill. Rate limits apply: 500 requests per minute for production apps. Always implement exponential backoff for 429 responses. ## Stripe Payment Integration Stripe provides both client-side (Stripe.js) and server-side APIs. For PCI compliance, never pass raw card numbers through your server—use Stripe Elements or the Payment Intents API. Webhooks are essential for handling asynchronous events like payment succeeded or subscription renewed. Configure your webhook endpoint to verify signatures using the Stripe-Signature header. ## ShipStation Integration The ShipStation API is REST-based. Authentication uses API key and API secret in the Authorization header. Endpoints cover orders, shipments, carriers, and warehouses. Poll for new orders or use webhooks if available for your plan. Batch operations are supported for bulk label creation. ## Twilio SMS Integration Twilio's REST API requires Account SID and Auth Token. The Messaging API endpoint is /2010-04-01/Accounts/{AccountSid}/Messages.json. For two-way messaging, configure a webhook URL to receive incoming messages. Consider using a queue for high-volume outbound SMS to avoid rate limits. # PentaCodes Technical Reference and Integration Documentation # Version 1.0 | Last Updated March 2025 # This document contains technical reference material for common integrations and deployment procedures. ## QuickBooks Online Integration The QuickBooks Online API uses OAuth 2.0 for authentication. You will need to register your application in the Intuit Developer Portal to obtain client credentials. The base URL for the API is https://quickbooks.api.intuit.com/v3/company/{realmId}. Common endpoints include /invoice, /customer, /payment, and /bill. Rate limits apply: 500 requests per minute for production apps. Always implement exponential backoff for 429 responses. ## Stripe Payment Integration Stripe provides both client-side (Stripe.js) and server-side APIs. For PCI compliance, never pass raw card numbers through your server—use Stripe Elements or the Payment Intents API. Webhooks are essential for handling asynchronous events like payment succeeded or subscription renewed. Configure your webhook endpoint to verify signatures using the Stripe-Signature header. ## ShipStation Integration The ShipStation API is REST-based. Authentication uses API key and API secret in the Authorization header. Endpoints cover orders, shipments, carriers, and warehouses. Poll for new orders or use webhooks if available for your plan. Batch operations are supported for bulk label creation. ## Twilio SMS Integration Twilio's REST API requires Account SID and Auth Token. The Messaging API endpoint is /2010-04-01/Accounts/{AccountSid}/Messages.json. For two-way messaging, configure a webhook URL to receive incoming messages. Consider using a queue for high-volume outbound SMS to avoid rate limits. # PentaCodes Technical Reference and Integration Documentation # Version 1.0 | Last Updated March 2025 # This document contains technical reference material for common integrations and deployment procedures. ## QuickBooks Online Integration The QuickBooks Online API uses OAuth 2.0 for authentication. You will need to register your application in the Intuit Developer Portal to obtain client credentials. The base URL for the API is https://quickbooks.api.intuit.com/v3/company/{realmId}. Common endpoints include /invoice, /customer, /payment, and /bill. Rate limits apply: 500 requests per minute for production apps. Always implement exponential backoff for 429 responses. ## Stripe Payment Integration Stripe provides both client-side (Stripe.js) and server-side APIs. For PCI compliance, never pass raw card numbers through your server—use Stripe Elements or the Payment Intents API. Webhooks are essential for handling asynchronous events like payment succeeded or subscription renewed. Configure your webhook endpoint to verify signatures using the Stripe-Signature header. ## ShipStation Integration The ShipStation API is REST-based. Authentication uses API key and API secret in the Authorization header. Endpoints cover orders, shipments, carriers, and warehouses. Poll for new orders or use webhooks if available for your plan. Batch operations are supported for bulk label creation. ## Twilio SMS Integration Twilio's REST API requires Account SID and Auth Token. The Messaging API endpoint is /2010-04-01/Accounts/{AccountSid}/Messages.json. For two-way messaging, configure a webhook URL to receive incoming messages. Consider using a queue for high-volume outbound SMS to avoid rate limits. # PentaCodes Technical Reference and Integration Documentation # Version 1.0 | Last Updated March 2025 # This document contains technical reference material for common integrations and deployment procedures. ## QuickBooks Online Integration The QuickBooks Online API uses OAuth 2.0 for authentication. You will need to register your application in the Intuit Developer Portal to obtain client credentials. The base URL for the API is https://quickbooks.api.intuit.com/v3/company/{realmId}. Common endpoints include /invoice, /customer, /payment, and /bill. Rate limits apply: 500 requests per minute for production apps. Always implement exponential backoff for 429 responses. ## Stripe Payment Integration Stripe provides both client-side (Stripe.js) and server-side APIs. For PCI compliance, never pass raw card numbers through your server—use Stripe Elements or the Payment Intents API. Webhooks are essential for handling asynchronous events like payment succeeded or subscription renewed. Configure your webhook endpoint to verify signatures using the Stripe-Signature header. ## ShipStation Integration The ShipStation API is REST-based. Authentication uses API key and API secret in the Authorization header. Endpoints cover orders, shipments, carriers, and warehouses. Poll for new orders or use webhooks if available for your plan. Batch operations are supported for bulk label creation. ## Twilio SMS Integration Twilio's REST API requires Account SID and Auth Token. The Messaging API endpoint is /2010-04-01/Accounts/{AccountSid}/Messages.json. For two-way messaging, configure a webhook URL to receive incoming messages. Consider using a queue for high-volume outbound SMS to avoid rate limits. # PentaCodes Technical Reference and Integration Documentation # Version 1.0 | Last Updated March 2025 # This document contains technical reference material for common integrations and deployment procedures. ## QuickBooks Online Integration The QuickBooks Online API uses OAuth 2.0 for authentication. You will need to register your application in the Intuit Developer Portal to obtain client credentials. The base URL for the API is https://quickbooks.api.intuit.com/v3/company/{realmId}. Common endpoints include /invoice, /customer, /payment, and /bill. Rate limits apply: 500 requests per minute for production apps. Always implement exponential backoff for 429 responses. ## Stripe Payment Integration Stripe provides both client-side (Stripe.js) and server-side APIs. For PCI compliance, never pass raw card numbers through your server—use Stripe Elements or the Payment Intents API. Webhooks are essential for handling asynchronous events like payment succeeded or subscription renewed. Configure your webhook endpoint to verify signatures using the Stripe-Signature header. ## ShipStation Integration The ShipStation API is REST-based. Authentication uses API key and API secret in the Authorization header. Endpoints cover orders, shipments, carriers, and warehouses. Poll for new orders or use webhooks if available for your plan. Batch operations are supported for bulk label creation. ## Twilio SMS Integration Twilio's REST API requires Account SID and Auth Token. The Messaging API endpoint is /2010-04-01/Accounts/{AccountSid}/Messages.json. For two-way messaging, configure a webhook URL to receive incoming messages. Consider using a queue for high-volume outbound SMS to avoid rate limits. # PentaCodes Technical Reference and Integration Documentation # Version 1.0 | Last Updated March 2025 # This document contains technical reference material for common integrations and deployment procedures. ## QuickBooks Online Integration The QuickBooks Online API uses OAuth 2.0 for authentication. You will need to register your application in the Intuit Developer Portal to obtain client credentials. The base URL for the API is https://quickbooks.api.intuit.com/v3/company/{realmId}. Common endpoints include /invoice, /customer, /payment, and /bill. Rate limits apply: 500 requests per minute for production apps. Always implement exponential backoff for 429 responses. ## Stripe Payment Integration Stripe provides both client-side (Stripe.js) and server-side APIs. For PCI compliance, never pass raw card numbers through your server—use Stripe Elements or the Payment Intents API. Webhooks are essential for handling asynchronous events like payment succeeded or subscription renewed. Configure your webhook endpoint to verify signatures using the Stripe-Signature header. ## ShipStation Integration The ShipStation API is REST-based. Authentication uses API key and API secret in the Authorization header. Endpoints cover orders, shipments, carriers, and warehouses. Poll for new orders or use webhooks if available for your plan. Batch operations are supported for bulk label creation. ## Twilio SMS Integration Twilio's REST API requires Account SID and Auth Token. The Messaging API endpoint is /2010-04-01/Accounts/{AccountSid}/Messages.json. For two-way messaging, configure a webhook URL to receive incoming messages. Consider using a queue for high-volume outbound SMS to avoid rate limits. # PentaCodes Technical Reference and Integration Documentation # Version 1.0 | Last Updated March 2025 # This document contains technical reference material for common integrations and deployment procedures. ## QuickBooks Online Integration The QuickBooks Online API uses OAuth 2.0 for authentication. You will need to register your application in the Intuit Developer Portal to obtain client credentials. The base URL for the API is https://quickbooks.api.intuit.com/v3/company/{realmId}. Common endpoints include /invoice, /customer, /payment, and /bill. Rate limits apply: 500 requests per minute for production apps. Always implement exponential backoff for 429 responses. ## Stripe Payment Integration Stripe provides both client-side (Stripe.js) and server-side APIs. For PCI compliance, never pass raw card numbers through your server—use Stripe Elements or the Payment Intents API. Webhooks are essential for handling asynchronous events like payment succeeded or subscription renewed. Configure your webhook endpoint to verify signatures using the Stripe-Signature header. ## ShipStation Integration The ShipStation API is REST-based. Authentication uses API key and API secret in the Authorization header. Endpoints cover orders, shipments, carriers, and warehouses. Poll for new orders or use webhooks if available for your plan. Batch operations are supported for bulk label creation. ## Twilio SMS Integration Twilio's REST API requires Account SID and Auth Token. The Messaging API endpoint is /2010-04-01/Accounts/{AccountSid}/Messages.json. For two-way messaging, configure a webhook URL to receive incoming messages. Consider using a queue for high-volume outbound SMS to avoid rate limits. # PentaCodes Technical Reference and Integration Documentation # Version 1.0 | Last Updated March 2025 # This document contains technical reference material for common integrations and deployment procedures. ## QuickBooks Online Integration The QuickBooks Online API uses OAuth 2.0 for authentication. You will need to register your application in the Intuit Developer Portal to obtain client credentials. The base URL for the API is https://quickbooks.api.intuit.com/v3/company/{realmId}. Common endpoints include /invoice, /customer, /payment, and /bill. Rate limits apply: 500 requests per minute for production apps. Always implement exponential backoff for 429 responses. ## Stripe Payment Integration Stripe provides both client-side (Stripe.js) and server-side APIs. For PCI compliance, never pass raw card numbers through your server—use Stripe Elements or the Payment Intents API. Webhooks are essential for handling asynchronous events like payment succeeded or subscription renewed. Configure your webhook endpoint to verify signatures using the Stripe-Signature header. ## ShipStation Integration The ShipStation API is REST-based. Authentication uses API key and API secret in the Authorization header. Endpoints cover orders, shipments, carriers, and warehouses. Poll for new orders or use webhooks if available for your plan. Batch operations are supported for bulk label creation. ## Twilio SMS Integration Twilio's REST API requires Account SID and Auth Token. The Messaging API endpoint is /2010-04-01/Accounts/{AccountSid}/Messages.json. For two-way messaging, configure a webhook URL to receive incoming messages. Consider using a queue for high-volume outbound SMS to avoid rate limits. # PentaCodes Technical Reference and Integration Documentation # Version 1.0 | Last Updated March 2025 # This document contains technical reference material for common integrations and deployment procedures. ## QuickBooks Online Integration The QuickBooks Online API uses OAuth 2.0 for authentication. You will need to register your application in the Intuit Developer Portal to obtain client credentials. The base URL for the API is https://quickbooks.api.intuit.com/v3/company/{realmId}. Common endpoints include /invoice, /customer, /payment, and /bill. Rate limits apply: 500 requests per minute for production apps. Always implement exponential backoff for 429 responses. ## Stripe Payment Integration Stripe provides both client-side (Stripe.js) and server-side APIs. For PCI compliance, never pass raw card numbers through your server—use Stripe Elements or the Payment Intents API. Webhooks are essential for handling asynchronous events like payment succeeded or subscription renewed. Configure your webhook endpoint to verify signatures using the Stripe-Signature header. ## ShipStation Integration The ShipStation API is REST-based. Authentication uses API key and API secret in the Authorization header. Endpoints cover orders, shipments, carriers, and warehouses. Poll for new orders or use webhooks if available for your plan. Batch operations are supported for bulk label creation. ## Twilio SMS Integration Twilio's REST API requires Account SID and Auth Token. The Messaging API endpoint is /2010-04-01/Accounts/{AccountSid}/Messages.json. For two-way messaging, configure a webhook URL to receive incoming messages. Consider using a queue for high-volume outbound SMS to avoid rate limits. # PentaCodes Technical Reference and Integration Documentation # Version 1.0 | Last Updated March 2025 # This document contains technical reference material for common integrations and deployment procedures. ## QuickBooks Online Integration The QuickBooks Online API uses OAuth 2.0 for authentication. You will need to register your application in the Intuit Developer Portal to obtain client credentials. The base URL for the API is https://quickbooks.api.intuit.com/v3/company/{realmId}. Common endpoints include /invoice, /customer, /payment, and /bill. Rate limits apply: 500 requests per minute for production apps. Always implement exponential backoff for 429 responses. ## Stripe Payment Integration Stripe provides both client-side (Stripe.js) and server-side APIs. For PCI compliance, never pass raw card numbers through your server—use Stripe Elements or the Payment Intents API. Webhooks are essential for handling asynchronous events like payment succeeded or subscription renewed. Configure your webhook endpoint to verify signatures using the Stripe-Signature header. ## ShipStation Integration The ShipStation API is REST-based. Authentication uses API key and API secret in the Authorization header. Endpoints cover orders, shipments, carriers, and warehouses. Poll for new orders or use webhooks if available for your plan. Batch operations are supported for bulk label creation. ## Twilio SMS Integration Twilio's REST API requires Account SID and Auth Token. The Messaging API endpoint is /2010-04-01/Accounts/{AccountSid}/Messages.json. For two-way messaging, configure a webhook URL to receive incoming messages. Consider using a queue for high-volume outbound SMS to avoid rate limits. # PentaCodes Technical Reference and Integration Documentation # Version 1.0 | Last Updated March 2025 # This document contains technical reference material for common integrations and deployment procedures. ## QuickBooks Online Integration The QuickBooks Online API uses OAuth 2.0 for authentication. You will need to register your application in the Intuit Developer Portal to obtain client credentials. The base URL for the API is https://quickbooks.api.intuit.com/v3/company/{realmId}. Common endpoints include /invoice, /customer, /payment, and /bill. Rate limits apply: 500 requests per minute for production apps. Always implement exponential backoff for 429 responses. ## Stripe Payment Integration Stripe provides both client-side (Stripe.js) and server-side APIs. For PCI compliance, never pass raw card numbers through your server—use Stripe Elements or the Payment Intents API. Webhooks are essential for handling asynchronous events like payment succeeded or subscription renewed. Configure your webhook endpoint to verify signatures using the Stripe-Signature header. ## ShipStation Integration The ShipStation API is REST-based. Authentication uses API key and API secret in the Authorization header. Endpoints cover orders, shipments, carriers, and warehouses. Poll for new orders or use webhooks if available for your plan. Batch operations are supported for bulk label creation. ## Twilio SMS Integration Twilio's REST API requires Account SID and Auth Token. The Messaging API endpoint is /2010-04-01/Accounts/{AccountSid}/Messages.json. For two-way messaging, configure a webhook URL to receive incoming messages. Consider using a queue for high-volume outbound SMS to avoid rate limits. # PentaCodes Technical Reference and Integration Documentation # Version 1.0 | Last Updated March 2025 # This document contains technical reference material for common integrations and deployment procedures. ## QuickBooks Online Integration The QuickBooks Online API uses OAuth 2.0 for authentication. You will need to register your application in the Intuit Developer Portal to obtain client credentials. The base URL for the API is https://quickbooks.api.intuit.com/v3/company/{realmId}. Common endpoints include /invoice, /customer, /payment, and /bill. Rate limits apply: 500 requests per minute for production apps. Always implement exponential backoff for 429 responses. ## Stripe Payment Integration Stripe provides both client-side (Stripe.js) and server-side APIs. For PCI compliance, never pass raw card numbers through your server—use Stripe Elements or the Payment Intents API. Webhooks are essential for handling asynchronous events like payment succeeded or subscription renewed. Configure your webhook endpoint to verify signatures using the Stripe-Signature header. ## ShipStation Integration The ShipStation API is REST-based. Authentication uses API key and API secret in the Authorization header. Endpoints cover orders, shipments, carriers, and warehouses. Poll for new orders or use webhooks if available for your plan. Batch operations are supported for bulk label creation. ## Twilio SMS Integration Twilio's REST API requires Account SID and Auth Token. The Messaging API endpoint is /2010-04-01/Accounts/{AccountSid}/Messages.json. For two-way messaging, configure a webhook URL to receive incoming messages. Consider using a queue for high-volume outbound SMS to avoid rate limits. # PentaCodes Technical Reference and Integration Documentation # Version 1.0 | Last Updated March 2025 # This document contains technical reference material for common integrations and deployment procedures. ## QuickBooks Online Integration The QuickBooks Online API uses OAuth 2.0 for authentication. You will need to register your application in the Intuit Developer Portal to obtain client credentials. The base URL for the API is https://quickbooks.api.intuit.com/v3/company/{realmId}. Common endpoints include /invoice, /customer, /payment, and /bill. Rate limits apply: 500 requests per minute for production apps. Always implement exponential backoff for 429 responses. ## Stripe Payment Integration Stripe provides both client-side (Stripe.js) and server-side APIs. For PCI compliance, never pass raw card numbers through your server—use Stripe Elements or the Payment Intents API. Webhooks are essential for handling asynchronous events like payment succeeded or subscription renewed. Configure your webhook endpoint to verify signatures using the Stripe-Signature header. ## ShipStation Integration The ShipStation API is REST-based. Authentication uses API key and API secret in the Authorization header. Endpoints cover orders, shipments, carriers, and warehouses. Poll for new orders or use webhooks if available for your plan. Batch operations are supported for bulk label creation. ## Twilio SMS Integration Twilio's REST API requires Account SID and Auth Token. The Messaging API endpoint is /2010-04-01/Accounts/{AccountSid}/Messages.json. For two-way messaging, configure a webhook URL to receive incoming messages. Consider using a queue for high-volume outbound SMS to avoid rate limits. # PentaCodes Technical Reference and Integration Documentation # Version 1.0 | Last Updated March 2025 # This document contains technical reference material for common integrations and deployment procedures. ## QuickBooks Online Integration The QuickBooks Online API uses OAuth 2.0 for authentication. You will need to register your application in the Intuit Developer Portal to obtain client credentials. The base URL for the API is https://quickbooks.api.intuit.com/v3/company/{realmId}. Common endpoints include /invoice, /customer, /payment, and /bill. Rate limits apply: 500 requests per minute for production apps. Always implement exponential backoff for 429 responses. ## Stripe Payment Integration Stripe provides both client-side (Stripe.js) and server-side APIs. For PCI compliance, never pass raw card numbers through your server—use Stripe Elements or the Payment Intents API. Webhooks are essential for handling asynchronous events like payment succeeded or subscription renewed. Configure your webhook endpoint to verify signatures using the Stripe-Signature header. ## ShipStation Integration The ShipStation API is REST-based. Authentication uses API key and API secret in the Authorization header. Endpoints cover orders, shipments, carriers, and warehouses. Poll for new orders or use webhooks if available for your plan. Batch operations are supported for bulk label creation. ## Twilio SMS Integration Twilio's REST API requires Account SID and Auth Token. The Messaging API endpoint is /2010-04-01/Accounts/{AccountSid}/Messages.json. For two-way messaging, configure a webhook URL to receive incoming messages. Consider using a queue for high-volume outbound SMS to avoid rate limits. # PentaCodes Technical Reference and Integration Documentation # Version 1.0 | Last Updated March 2025 # This document contains technical reference material for common integrations and deployment procedures. ## QuickBooks Online Integration The QuickBooks Online API uses OAuth 2.0 for authentication. You will need to register your application in the Intuit Developer Portal to obtain client credentials. The base URL for the API is https://quickbooks.api.intuit.com/v3/company/{realmId}. Common endpoints include /invoice, /customer, /payment, and /bill. Rate limits apply: 500 requests per minute for production apps. Always implement exponential backoff for 429 responses. ## Stripe Payment Integration Stripe provides both client-side (Stripe.js) and server-side APIs. For PCI compliance, never pass raw card numbers through your server—use Stripe Elements or the Payment Intents API. Webhooks are essential for handling asynchronous events like payment succeeded or subscription renewed. Configure your webhook endpoint to verify signatures using the Stripe-Signature header. ## ShipStation Integration The ShipStation API is REST-based. Authentication uses API key and API secret in the Authorization header. Endpoints cover orders, shipments, carriers, and warehouses. Poll for new orders or use webhooks if available for your plan. Batch operations are supported for bulk label creation. ## Twilio SMS Integration Twilio's REST API requires Account SID and Auth Token. The Messaging API endpoint is /2010-04-01/Accounts/{AccountSid}/Messages.json. For two-way messaging, configure a webhook URL to receive incoming messages. Consider using a queue for high-volume outbound SMS to avoid rate limits. # PentaCodes Technical Reference and Integration Documentation # Version 1.0 | Last Updated March 2025 # This document contains technical reference material for common integrations and deployment procedures. ## QuickBooks Online Integration The QuickBooks Online API uses OAuth 2.0 for authentication. You will need to register your application in the Intuit Developer Portal to obtain client credentials. The base URL for the API is https://quickbooks.api.intuit.com/v3/company/{realmId}. Common endpoints include /invoice, /customer, /payment, and /bill. Rate limits apply: 500 requests per minute for production apps. Always implement exponential backoff for 429 responses. ## Stripe Payment Integration Stripe provides both client-side (Stripe.js) and server-side APIs. For PCI compliance, never pass raw card numbers through your server—use Stripe Elements or the Payment Intents API. Webhooks are essential for handling asynchronous events like payment succeeded or subscription renewed. Configure your webhook endpoint to verify signatures using the Stripe-Signature header. ## ShipStation Integration The ShipStation API is REST-based. Authentication uses API key and API secret in the Authorization header. Endpoints cover orders, shipments, carriers, and warehouses. Poll for new orders or use webhooks if available for your plan. Batch operations are supported for bulk label creation. ## Twilio SMS Integration Twilio's REST API requires Account SID and Auth Token. The Messaging API endpoint is /2010-04-01/Accounts/{AccountSid}/Messages.json. For two-way messaging, configure a webhook URL to receive incoming messages. Consider using a queue for high-volume outbound SMS to avoid rate limits. # PentaCodes Technical Reference and Integration Documentation # Version 1.0 | Last Updated March 2025 # This document contains technical reference material for common integrations and deployment procedures. ## QuickBooks Online Integration The QuickBooks Online API uses OAuth 2.0 for authentication. You will need to register your application in the Intuit Developer Portal to obtain client credentials. The base URL for the API is https://quickbooks.api.intuit.com/v3/company/{realmId}. Common endpoints include /invoice, /customer, /payment, and /bill. Rate limits apply: 500 requests per minute for production apps. Always implement exponential backoff for 429 responses. ## Stripe Payment Integration Stripe provides both client-side (Stripe.js) and server-side APIs. For PCI compliance, never pass raw card numbers through your server—use Stripe Elements or the Payment Intents API. Webhooks are essential for handling asynchronous events like payment succeeded or subscription renewed. Configure your webhook endpoint to verify signatures using the Stripe-Signature header. ## ShipStation Integration The ShipStation API is REST-based. Authentication uses API key and API secret in the Authorization header. Endpoints cover orders, shipments, carriers, and warehouses. Poll for new orders or use webhooks if available for your plan. Batch operations are supported for bulk label creation. ## Twilio SMS Integration Twilio's REST API requires Account SID and Auth Token. The Messaging API endpoint is /2010-04-01/Accounts/{AccountSid}/Messages.json. For two-way messaging, configure a webhook URL to receive incoming messages. Consider using a queue for high-volume outbound SMS to avoid rate limits. # PentaCodes Technical Reference and Integration Documentation # Version 1.0 | Last Updated March 2025 # This document contains technical reference material for common integrations and deployment procedures. ## QuickBooks Online Integration The QuickBooks Online API uses OAuth 2.0 for authentication. You will need to register your application in the Intuit Developer Portal to obtain client credentials. The base URL for the API is https://quickbooks.api.intuit.com/v3/company/{realmId}. Common endpoints include /invoice, /customer, /payment, and /bill. Rate limits apply: 500 requests per minute for production apps. Always implement exponential backoff for 429 responses. ## Stripe Payment Integration Stripe provides both client-side (Stripe.js) and server-side APIs. For PCI compliance, never pass raw card numbers through your server—use Stripe Elements or the Payment Intents API. Webhooks are essential for handling asynchronous events like payment succeeded or subscription renewed. Configure your webhook endpoint to verify signatures using the Stripe-Signature header. ## ShipStation Integration The ShipStation API is REST-based. Authentication uses API key and API secret in the Authorization header. Endpoints cover orders, shipments, carriers, and warehouses. Poll for new orders or use webhooks if available for your plan. Batch operations are supported for bulk label creation. ## Twilio SMS Integration Twilio's REST API requires Account SID and Auth Token. The Messaging API endpoint is /2010-04-01/Accounts/{AccountSid}/Messages.json. For two-way messaging, configure a webhook URL to receive incoming messages. Consider using a queue for high-volume outbound SMS to avoid rate limits. # PentaCodes Technical Reference and Integration Documentation # Version 1.0 | Last Updated March 2025 # This document contains technical reference material for common integrations and deployment procedures. ## QuickBooks Online Integration The QuickBooks Online API uses OAuth 2.0 for authentication. You will need to register your application in the Intuit Developer Portal to obtain client credentials. The base URL for the API is https://quickbooks.api.intuit.com/v3/company/{realmId}. Common endpoints include /invoice, /customer, /payment, and /bill. Rate limits apply: 500 requests per minute for production apps. Always implement exponential backoff for 429 responses. ## Stripe Payment Integration Stripe provides both client-side (Stripe.js) and server-side APIs. For PCI compliance, never pass raw card numbers through your server—use Stripe Elements or the Payment Intents API. Webhooks are essential for handling asynchronous events like payment succeeded or subscription renewed. Configure your webhook endpoint to verify signatures using the Stripe-Signature header. ## ShipStation Integration The ShipStation API is REST-based. Authentication uses API key and API secret in the Authorization header. Endpoints cover orders, shipments, carriers, and warehouses. Poll for new orders or use webhooks if available for your plan. Batch operations are supported for bulk label creation. ## Twilio SMS Integration Twilio's REST API requires Account SID and Auth Token. The Messaging API endpoint is /2010-04-01/Accounts/{AccountSid}/Messages.json. For two-way messaging, configure a webhook URL to receive incoming messages. Consider using a queue for high-volume outbound SMS to avoid rate limits. # PentaCodes Technical Reference and Integration Documentation # Version 1.0 | Last Updated March 2025 # This document contains technical reference material for common integrations and deployment procedures. ## QuickBooks Online Integration The QuickBooks Online API uses OAuth 2.0 for authentication. You will need to register your application in the Intuit Developer Portal to obtain client credentials. The base URL for the API is https://quickbooks.api.intuit.com/v3/company/{realmId}. Common endpoints include /invoice, /customer, /payment, and /bill. Rate limits apply: 500 requests per minute for production apps. Always implement exponential backoff for 429 responses. ## Stripe Payment Integration Stripe provides both client-side (Stripe.js) and server-side APIs. For PCI compliance, never pass raw card numbers through your server—use Stripe Elements or the Payment Intents API. Webhooks are essential for handling asynchronous events like payment succeeded or subscription renewed. Configure your webhook endpoint to verify signatures using the Stripe-Signature header. ## ShipStation Integration The ShipStation API is REST-based. Authentication uses API key and API secret in the Authorization header. Endpoints cover orders, shipments, carriers, and warehouses. Poll for new orders or use webhooks if available for your plan. Batch operations are supported for bulk label creation. ## Twilio SMS Integration Twilio's REST API requires Account SID and Auth Token. The Messaging API endpoint is /2010-04-01/Accounts/{AccountSid}/Messages.json. For two-way messaging, configure a webhook URL to receive incoming messages. Consider using a queue for high-volume outbound SMS to avoid rate limits. # PentaCodes Technical Reference and Integration Documentation # Version 1.0 | Last Updated March 2025 # This document contains technical reference material for common integrations and deployment procedures. ## QuickBooks Online Integration The QuickBooks Online API uses OAuth 2.0 for authentication. You will need to register your application in the Intuit Developer Portal to obtain client credentials. The base URL for the API is https://quickbooks.api.intuit.com/v3/company/{realmId}. Common endpoints include /invoice, /customer, /payment, and /bill. Rate limits apply: 500 requests per minute for production apps. Always implement exponential backoff for 429 responses. ## Stripe Payment Integration Stripe provides both client-side (Stripe.js) and server-side APIs. For PCI compliance, never pass raw card numbers through your server—use Stripe Elements or the Payment Intents API. Webhooks are essential for handling asynchronous events like payment succeeded or subscription renewed. Configure your webhook endpoint to verify signatures using the Stripe-Signature header. ## ShipStation Integration The ShipStation API is REST-based. Authentication uses API key and API secret in the Authorization header. Endpoints cover orders, shipments, carriers, and warehouses. Poll for new orders or use webhooks if available for your plan. Batch operations are supported for bulk label creation. ## Twilio SMS Integration Twilio's REST API requires Account SID and Auth Token. The Messaging API endpoint is /2010-04-01/Accounts/{AccountSid}/Messages.json. For two-way messaging, configure a webhook URL to receive incoming messages. Consider using a queue for high-volume outbound SMS to avoid rate limits. # PentaCodes Technical Reference and Integration Documentation # Version 1.0 | Last Updated March 2025 # This document contains technical reference material for common integrations and deployment procedures. ## QuickBooks Online Integration The QuickBooks Online API uses OAuth 2.0 for authentication. You will need to register your application in the Intuit Developer Portal to obtain client credentials. The base URL for the API is https://quickbooks.api.intuit.com/v3/company/{realmId}. Common endpoints include /invoice, /customer, /payment, and /bill. Rate limits apply: 500 requests per minute for production apps. Always implement exponential backoff for 429 responses. ## Stripe Payment Integration Stripe provides both client-side (Stripe.js) and server-side APIs. For PCI compliance, never pass raw card numbers through your server—use Stripe Elements or the Payment Intents API. Webhooks are essential for handling asynchronous events like payment succeeded or subscription renewed. Configure your webhook endpoint to verify signatures using the Stripe-Signature header. ## ShipStation Integration The ShipStation API is REST-based. Authentication uses API key and API secret in the Authorization header. Endpoints cover orders, shipments, carriers, and warehouses. Poll for new orders or use webhooks if available for your plan. Batch operations are supported for bulk label creation. ## Twilio SMS Integration Twilio's REST API requires Account SID and Auth Token. The Messaging API endpoint is /2010-04-01/Accounts/{AccountSid}/Messages.json. For two-way messaging, configure a webhook URL to receive incoming messages. Consider using a queue for high-volume outbound SMS to avoid rate limits. # PentaCodes Technical Reference and Integration Documentation # Version 1.0 | Last Updated March 2025 # This document contains technical reference material for common integrations and deployment procedures. ## QuickBooks Online Integration The QuickBooks Online API uses OAuth 2.0 for authentication. You will need to register your application in the Intuit Developer Portal to obtain client credentials. The base URL for the API is https://quickbooks.api.intuit.com/v3/company/{realmId}. Common endpoints include /invoice, /customer, /payment, and /bill. Rate limits apply: 500 requests per minute for production apps. Always implement exponential backoff for 429 responses. ## Stripe Payment Integration Stripe provides both client-side (Stripe.js) and server-side APIs. For PCI compliance, never pass raw card numbers through your server—use Stripe Elements or the Payment Intents API. Webhooks are essential for handling asynchronous events like payment succeeded or subscription renewed. Configure your webhook endpoint to verify signatures using the Stripe-Signature header. ## ShipStation Integration The ShipStation API is REST-based. Authentication uses API key and API secret in the Authorization header. Endpoints cover orders, shipments, carriers, and warehouses. Poll for new orders or use webhooks if available for your plan. Batch operations are supported for bulk label creation. ## Twilio SMS Integration Twilio's REST API requires Account SID and Auth Token. The Messaging API endpoint is /2010-04-01/Accounts/{AccountSid}/Messages.json. For two-way messaging, configure a webhook URL to receive incoming messages. Consider using a queue for high-volume outbound SMS to avoid rate limits. # PentaCodes Technical Reference and Integration Documentation # Version 1.0 | Last Updated March 2025 # This document contains technical reference material for common integrations and deployment procedures. ## QuickBooks Online Integration The QuickBooks Online API uses OAuth 2.0 for authentication. You will need to register your application in the Intuit Developer Portal to obtain client credentials. The base URL for the API is https://quickbooks.api.intuit.com/v3/company/{realmId}. Common endpoints include /invoice, /customer, /payment, and /bill. Rate limits apply: 500 requests per minute for production apps. Always implement exponential backoff for 429 responses. ## Stripe Payment Integration Stripe provides both client-side (Stripe.js) and server-side APIs. For PCI compliance, never pass raw card numbers through your server—use Stripe Elements or the Payment Intents API. Webhooks are essential for handling asynchronous events like payment succeeded or subscription renewed. Configure your webhook endpoint to verify signatures using the Stripe-Signature header. ## ShipStation Integration The ShipStation API is REST-based. Authentication uses API key and API secret in the Authorization header. Endpoints cover orders, shipments, carriers, and warehouses. Poll for new orders or use webhooks if available for your plan. Batch operations are supported for bulk label creation. ## Twilio SMS Integration Twilio's REST API requires Account SID and Auth Token. The Messaging API endpoint is /2010-04-01/Accounts/{AccountSid}/Messages.json. For two-way messaging, configure a webhook URL to receive incoming messages. Consider using a queue for high-volume outbound SMS to avoid rate limits. # PentaCodes Technical Reference and Integration Documentation # Version 1.0 | Last Updated March 2025 # This document contains technical reference material for common integrations and deployment procedures. ## QuickBooks Online Integration The QuickBooks Online API uses OAuth 2.0 for authentication. You will need to register your application in the Intuit Developer Portal to obtain client credentials. The base URL for the API is https://quickbooks.api.intuit.com/v3/company/{realmId}. Common endpoints include /invoice, /customer, /payment, and /bill. Rate limits apply: 500 requests per minute for production apps. Always implement exponential backoff for 429 responses. ## Stripe Payment Integration Stripe provides both client-side (Stripe.js) and server-side APIs. For PCI compliance, never pass raw card numbers through your server—use Stripe Elements or the Payment Intents API. Webhooks are essential for handling asynchronous events like payment succeeded or subscription renewed. Configure your webhook endpoint to verify signatures using the Stripe-Signature header. ## ShipStation Integration The ShipStation API is REST-based. Authentication uses API key and API secret in the Authorization header. Endpoints cover orders, shipments, carriers, and warehouses. Poll for new orders or use webhooks if available for your plan. Batch operations are supported for bulk label creation. ## Twilio SMS Integration Twilio's REST API requires Account SID and Auth Token. The Messaging API endpoint is /2010-04-01/Accounts/{AccountSid}/Messages.json. For two-way messaging, configure a webhook URL to receive incoming messages. Consider using a queue for high-volume outbound SMS to avoid rate limits. # PentaCodes Technical Reference and Integration Documentation # Version 1.0 | Last Updated March 2025 # This document contains technical reference material for common integrations and deployment procedures. ## QuickBooks Online Integration The QuickBooks Online API uses OAuth 2.0 for authentication. You will need to register your application in the Intuit Developer Portal to obtain client credentials. The base URL for the API is https://quickbooks.api.intuit.com/v3/company/{realmId}. Common endpoints include /invoice, /customer, /payment, and /bill. Rate limits apply: 500 requests per minute for production apps. Always implement exponential backoff for 429 responses. ## Stripe Payment Integration Stripe provides both client-side (Stripe.js) and server-side APIs. For PCI compliance, never pass raw card numbers through your server—use Stripe Elements or the Payment Intents API. Webhooks are essential for handling asynchronous events like payment succeeded or subscription renewed. Configure your webhook endpoint to verify signatures using the Stripe-Signature header. ## ShipStation Integration The ShipStation API is REST-based. Authentication uses API key and API secret in the Authorization header. Endpoints cover orders, shipments, carriers, and warehouses. Poll for new orders or use webhooks if available for your plan. Batch operations are supported for bulk label creation. ## Twilio SMS Integration Twilio's REST API requires Account SID and Auth Token. The Messaging API endpoint is /2010-04-01/Accounts/{AccountSid}/Messages.json. For two-way messaging, configure a webhook URL to receive incoming messages. Consider using a queue for high-volume outbound SMS to avoid rate limits. # PentaCodes Technical Reference and Integration Documentation # Version 1.0 | Last Updated March 2025 # This document contains technical reference material for common integrations and deployment procedures. ## QuickBooks Online Integration The QuickBooks Online API uses OAuth 2.0 for authentication. You will need to register your application in the Intuit Developer Portal to obtain client credentials. The base URL for the API is https://quickbooks.api.intuit.com/v3/company/{realmId}. Common endpoints include /invoice, /customer, /payment, and /bill. Rate limits apply: 500 requests per minute for production apps. Always implement exponential backoff for 429 responses. ## Stripe Payment Integration Stripe provides both client-side (Stripe.js) and server-side APIs. For PCI compliance, never pass raw card numbers through your server—use Stripe Elements or the Payment Intents API. Webhooks are essential for handling asynchronous events like payment succeeded or subscription renewed. Configure your webhook endpoint to verify signatures using the Stripe-Signature header. ## ShipStation Integration The ShipStation API is REST-based. Authentication uses API key and API secret in the Authorization header. Endpoints cover orders, shipments, carriers, and warehouses. Poll for new orders or use webhooks if available for your plan. Batch operations are supported for bulk label creation. ## Twilio SMS Integration Twilio's REST API requires Account SID and Auth Token. The Messaging API endpoint is /2010-04-01/Accounts/{AccountSid}/Messages.json. For two-way messaging, configure a webhook URL to receive incoming messages. Consider using a queue for high-volume outbound SMS to avoid rate limits. # PentaCodes Technical Reference and Integration Documentation # Version 1.0 | Last Updated March 2025 # This document contains technical reference material for common integrations and deployment procedures. ## QuickBooks Online Integration The QuickBooks Online API uses OAuth 2.0 for authentication. You will need to register your application in the Intuit Developer Portal to obtain client credentials. The base URL for the API is https://quickbooks.api.intuit.com/v3/company/{realmId}. Common endpoints include /invoice, /customer, /payment, and /bill. Rate limits apply: 500 requests per minute for production apps. Always implement exponential backoff for 429 responses. ## Stripe Payment Integration Stripe provides both client-side (Stripe.js) and server-side APIs. For PCI compliance, never pass raw card numbers through your server—use Stripe Elements or the Payment Intents API. Webhooks are essential for handling asynchronous events like payment succeeded or subscription renewed. Configure your webhook endpoint to verify signatures using the Stripe-Signature header. ## ShipStation Integration The ShipStation API is REST-based. Authentication uses API key and API secret in the Authorization header. Endpoints cover orders, shipments, carriers, and warehouses. Poll for new orders or use webhooks if available for your plan. Batch operations are supported for bulk label creation. ## Twilio SMS Integration Twilio's REST API requires Account SID and Auth Token. The Messaging API endpoint is /2010-04-01/Accounts/{AccountSid}/Messages.json. For two-way messaging, configure a webhook URL to receive incoming messages. Consider using a queue for high-volume outbound SMS to avoid rate limits. # PentaCodes Technical Reference and Integration Documentation # Version 1.0 | Last Updated March 2025 # This document contains technical reference material for common integrations and deployment procedures. ## QuickBooks Online Integration The QuickBooks Online API uses OAuth 2.0 for authentication. You will need to register your application in the Intuit Developer Portal to obtain client credentials. The base URL for the API is https://quickbooks.api.intuit.com/v3/company/{realmId}. Common endpoints include /invoice, /customer, /payment, and /bill. Rate limits apply: 500 requests per minute for production apps. Always implement exponential backoff for 429 responses. ## Stripe Payment Integration Stripe provides both client-side (Stripe.js) and server-side APIs. For PCI compliance, never pass raw card numbers through your server—use Stripe Elements or the Payment Intents API. Webhooks are essential for handling asynchronous events like payment succeeded or subscription renewed. Configure your webhook endpoint to verify signatures using the Stripe-Signature header. ## ShipStation Integration The ShipStation API is REST-based. Authentication uses API key and API secret in the Authorization header. Endpoints cover orders, shipments, carriers, and warehouses. Poll for new orders or use webhooks if available for your plan. Batch operations are supported for bulk label creation. ## Twilio SMS Integration Twilio's REST API requires Account SID and Auth Token. The Messaging API endpoint is /2010-04-01/Accounts/{AccountSid}/Messages.json. For two-way messaging, configure a webhook URL to receive incoming messages. Consider using a queue for high-volume outbound SMS to avoid rate limits. # PentaCodes Technical Reference and Integration Documentation # Version 1.0 | Last Updated March 2025 # This document contains technical reference material for common integrations and deployment procedures. ## QuickBooks Online Integration The QuickBooks Online API uses OAuth 2.0 for authentication. You will need to register your application in the Intuit Developer Portal to obtain client credentials. The base URL for the API is https://quickbooks.api.intuit.com/v3/company/{realmId}. Common endpoints include /invoice, /customer, /payment, and /bill. Rate limits apply: 500 requests per minute for production apps. Always implement exponential backoff for 429 responses. ## Stripe Payment Integration Stripe provides both client-side (Stripe.js) and server-side APIs. For PCI compliance, never pass raw card numbers through your server—use Stripe Elements or the Payment Intents API. Webhooks are essential for handling asynchronous events like payment succeeded or subscription renewed. Configure your webhook endpoint to verify signatures using the Stripe-Signature header. ## ShipStation Integration The ShipStation API is REST-based. Authentication uses API key and API secret in the Authorization header. Endpoints cover orders, shipments, carriers, and warehouses. Poll for new orders or use webhooks if available for your plan. Batch operations are supported for bulk label creation. ## Twilio SMS Integration Twilio's REST API requires Account SID and Auth Token. The Messaging API endpoint is /2010-04-01/Accounts/{AccountSid}/Messages.json. For two-way messaging, configure a webhook URL to receive incoming messages. Consider using a queue for high-volume outbound SMS to avoid rate limits. # PentaCodes Technical Reference and Integration Documentation # Version 1.0 | Last Updated March 2025 # This document contains technical reference material for common integrations and deployment procedures. ## QuickBooks Online Integration The QuickBooks Online API uses OAuth 2.0 for authentication. You will need to register your application in the Intuit Developer Portal to obtain client credentials. The base URL for the API is https://quickbooks.api.intuit.com/v3/company/{realmId}. Common endpoints include /invoice, /customer, /payment, and /bill. Rate limits apply: 500 requests per minute for production apps. Always implement exponential backoff for 429 responses. ## Stripe Payment Integration Stripe provides both client-side (Stripe.js) and server-side APIs. For PCI compliance, never pass raw card numbers through your server—use Stripe Elements or the Payment Intents API. Webhooks are essential for handling asynchronous events like payment succeeded or subscription renewed. Configure your webhook endpoint to verify signatures using the Stripe-Signature header. ## ShipStation Integration The ShipStation API is REST-based. Authentication uses API key and API secret in the Authorization header. Endpoints cover orders, shipments, carriers, and warehouses. Poll for new orders or use webhooks if available for your plan. Batch operations are supported for bulk label creation. ## Twilio SMS Integration Twilio's REST API requires Account SID and Auth Token. The Messaging API endpoint is /2010-04-01/Accounts/{AccountSid}/Messages.json. For two-way messaging, configure a webhook URL to receive incoming messages. Consider using a queue for high-volume outbound SMS to avoid rate limits. # PentaCodes Technical Reference and Integration Documentation # Version 1.0 | Last Updated March 2025 # This document contains technical reference material for common integrations and deployment procedures. ## QuickBooks Online Integration The QuickBooks Online API uses OAuth 2.0 for authentication. You will need to register your application in the Intuit Developer Portal to obtain client credentials. The base URL for the API is https://quickbooks.api.intuit.com/v3/company/{realmId}. Common endpoints include /invoice, /customer, /payment, and /bill. Rate limits apply: 500 requests per minute for production apps. Always implement exponential backoff for 429 responses. ## Stripe Payment Integration Stripe provides both client-side (Stripe.js) and server-side APIs. For PCI compliance, never pass raw card numbers through your server—use Stripe Elements or the Payment Intents API. Webhooks are essential for handling asynchronous events like payment succeeded or subscription renewed. Configure your webhook endpoint to verify signatures using the Stripe-Signature header. ## ShipStation Integration The ShipStation API is REST-based. Authentication uses API key and API secret in the Authorization header. Endpoints cover orders, shipments, carriers, and warehouses. Poll for new orders or use webhooks if available for your plan. Batch operations are supported for bulk label creation. ## Twilio SMS Integration Twilio's REST API requires Account SID and Auth Token. The Messaging API endpoint is /2010-04-01/Accounts/{AccountSid}/Messages.json. For two-way messaging, configure a webhook URL to receive incoming messages. Consider using a queue for high-volume outbound SMS to avoid rate limits. # PentaCodes Technical Reference and Integration Documentation # Version 1.0 | Last Updated March 2025 # This document contains technical reference material for common integrations and deployment procedures. ## QuickBooks Online Integration The QuickBooks Online API uses OAuth 2.0 for authentication. You will need to register your application in the Intuit Developer Portal to obtain client credentials. The base URL for the API is https://quickbooks.api.intuit.com/v3/company/{realmId}. Common endpoints include /invoice, /customer, /payment, and /bill. Rate limits apply: 500 requests per minute for production apps. Always implement exponential backoff for 429 responses. ## Stripe Payment Integration Stripe provides both client-side (Stripe.js) and server-side APIs. For PCI compliance, never pass raw card numbers through your server—use Stripe Elements or the Payment Intents API. Webhooks are essential for handling asynchronous events like payment succeeded or subscription renewed. Configure your webhook endpoint to verify signatures using the Stripe-Signature header. ## ShipStation Integration The ShipStation API is REST-based. Authentication uses API key and API secret in the Authorization header. Endpoints cover orders, shipments, carriers, and warehouses. Poll for new orders or use webhooks if available for your plan. Batch operations are supported for bulk label creation. ## Twilio SMS Integration Twilio's REST API requires Account SID and Auth Token. The Messaging API endpoint is /2010-04-01/Accounts/{AccountSid}/Messages.json. For two-way messaging, configure a webhook URL to receive incoming messages. Consider using a queue for high-volume outbound SMS to avoid rate limits. # PentaCodes Technical Reference and Integration Documentation # Version 1.0 | Last Updated March 2025 # This document contains technical reference material for common integrations and deployment procedures. ## QuickBooks Online Integration The QuickBooks Online API uses OAuth 2.0 for authentication. You will need to register your application in the Intuit Developer Portal to obtain client credentials. The base URL for the API is https://quickbooks.api.intuit.com/v3/company/{realmId}. Common endpoints include /invoice, /customer, /payment, and /bill. Rate limits apply: 500 requests per minute for production apps. Always implement exponential backoff for 429 responses. ## Stripe Payment Integration Stripe provides both client-side (Stripe.js) and server-side APIs. For PCI compliance, never pass raw card numbers through your server—use Stripe Elements or the Payment Intents API. Webhooks are essential for handling asynchronous events like payment succeeded or subscription renewed. Configure your webhook endpoint to verify signatures using the Stripe-Signature header. ## ShipStation Integration The ShipStation API is REST-based. Authentication uses API key and API secret in the Authorization header. Endpoints cover orders, shipments, carriers, and warehouses. Poll for new orders or use webhooks if available for your plan. Batch operations are supported for bulk label creation. ## Twilio SMS Integration Twilio's REST API requires Account SID and Auth Token. The Messaging API endpoint is /2010-04-01/Accounts/{AccountSid}/Messages.json. For two-way messaging, configure a webhook URL to receive incoming messages. Consider using a queue for high-volume outbound SMS to avoid rate limits. # PentaCodes Technical Reference and Integration Documentation # Version 1.0 | Last Updated March 2025 # This document contains technical reference material for common integrations and deployment procedures. ## QuickBooks Online Integration The QuickBooks Online API uses OAuth 2.0 for authentication. You will need to register your application in the Intuit Developer Portal to obtain client credentials. The base URL for the API is https://quickbooks.api.intuit.com/v3/company/{realmId}. Common endpoints include /invoice, /customer, /payment, and /bill. Rate limits apply: 500 requests per minute for production apps. Always implement exponential backoff for 429 responses. ## Stripe Payment Integration Stripe provides both client-side (Stripe.js) and server-side APIs. For PCI compliance, never pass raw card numbers through your server—use Stripe Elements or the Payment Intents API. Webhooks are essential for handling asynchronous events like payment succeeded or subscription renewed. Configure your webhook endpoint to verify signatures using the Stripe-Signature header. ## ShipStation Integration The ShipStation API is REST-based. Authentication uses API key and API secret in the Authorization header. Endpoints cover orders, shipments, carriers, and warehouses. Poll for new orders or use webhooks if available for your plan. Batch operations are supported for bulk label creation. ## Twilio SMS Integration Twilio's REST API requires Account SID and Auth Token. The Messaging API endpoint is /2010-04-01/Accounts/{AccountSid}/Messages.json. For two-way messaging, configure a webhook URL to receive incoming messages. Consider using a queue for high-volume outbound SMS to avoid rate limits. # PentaCodes Technical Reference and Integration Documentation # Version 1.0 | Last Updated March 2025 # This document contains technical reference material for common integrations and deployment procedures. ## QuickBooks Online Integration The QuickBooks Online API uses OAuth 2.0 for authentication. You will need to register your application in the Intuit Developer Portal to obtain client credentials. The base URL for the API is https://quickbooks.api.intuit.com/v3/company/{realmId}. Common endpoints include /invoice, /customer, /payment, and /bill. Rate limits apply: 500 requests per minute for production apps. Always implement exponential backoff for 429 responses. ## Stripe Payment Integration Stripe provides both client-side (Stripe.js) and server-side APIs. For PCI compliance, never pass raw card numbers through your server—use Stripe Elements or the Payment Intents API. Webhooks are essential for handling asynchronous events like payment succeeded or subscription renewed. Configure your webhook endpoint to verify signatures using the Stripe-Signature header. ## ShipStation Integration The ShipStation API is REST-based. Authentication uses API key and API secret in the Authorization header. Endpoints cover orders, shipments, carriers, and warehouses. Poll for new orders or use webhooks if available for your plan. Batch operations are supported for bulk label creation. ## Twilio SMS Integration Twilio's REST API requires Account SID and Auth Token. The Messaging API endpoint is /2010-04-01/Accounts/{AccountSid}/Messages.json. For two-way messaging, configure a webhook URL to receive incoming messages. Consider using a queue for high-volume outbound SMS to avoid rate limits. # PentaCodes Technical Reference and Integration Documentation # Version 1.0 | Last Updated March 2025 # This document contains technical reference material for common integrations and deployment procedures. ## QuickBooks Online Integration The QuickBooks Online API uses OAuth 2.0 for authentication. You will need to register your application in the Intuit Developer Portal to obtain client credentials. The base URL for the API is https://quickbooks.api.intuit.com/v3/company/{realmId}. Common endpoints include /invoice, /customer, /payment, and /bill. Rate limits apply: 500 requests per minute for production apps. Always implement exponential backoff for 429 responses. ## Stripe Payment Integration Stripe provides both client-side (Stripe.js) and server-side APIs. For PCI compliance, never pass raw card numbers through your server—use Stripe Elements or the Payment Intents API. Webhooks are essential for handling asynchronous events like payment succeeded or subscription renewed. Configure your webhook endpoint to verify signatures using the Stripe-Signature header. ## ShipStation Integration The ShipStation API is REST-based. Authentication uses API key and API secret in the Authorization header. Endpoints cover orders, shipments, carriers, and warehouses. Poll for new orders or use webhooks if available for your plan. Batch operations are supported for bulk label creation. ## Twilio SMS Integration Twilio's REST API requires Account SID and Auth Token. The Messaging API endpoint is /2010-04-01/Accounts/{AccountSid}/Messages.json. For two-way messaging, configure a webhook URL to receive incoming messages. Consider using a queue for high-volume outbound SMS to avoid rate limits. # PentaCodes Technical Reference and Integration Documentation # Version 1.0 | Last Updated March 2025 # This document contains technical reference material for common integrations and deployment procedures. ## QuickBooks Online Integration The QuickBooks Online API uses OAuth 2.0 for authentication. You will need to register your application in the Intuit Developer Portal to obtain client credentials. The base URL for the API is https://quickbooks.api.intuit.com/v3/company/{realmId}. Common endpoints include /invoice, /customer, /payment, and /bill. Rate limits apply: 500 requests per minute for production apps. Always implement exponential backoff for 429 responses. ## Stripe Payment Integration Stripe provides both client-side (Stripe.js) and server-side APIs. For PCI compliance, never pass raw card numbers through your server—use Stripe Elements or the Payment Intents API. Webhooks are essential for handling asynchronous events like payment succeeded or subscription renewed. Configure your webhook endpoint to verify signatures using the Stripe-Signature header. ## ShipStation Integration The ShipStation API is REST-based. Authentication uses API key and API secret in the Authorization header. Endpoints cover orders, shipments, carriers, and warehouses. Poll for new orders or use webhooks if available for your plan. Batch operations are supported for bulk label creation. ## Twilio SMS Integration Twilio's REST API requires Account SID and Auth Token. The Messaging API endpoint is /2010-04-01/Accounts/{AccountSid}/Messages.json. For two-way messaging, configure a webhook URL to receive incoming messages. Consider using a queue for high-volume outbound SMS to avoid rate limits. # PentaCodes Technical Reference and Integration Documentation # Version 1.0 | Last Updated March 2025 # This document contains technical reference material for common integrations and deployment procedures. ## QuickBooks Online Integration The QuickBooks Online API uses OAuth 2.0 for authentication. You will need to register your application in the Intuit Developer Portal to obtain client credentials. The base URL for the API is https://quickbooks.api.intuit.com/v3/company/{realmId}. Common endpoints include /invoice, /customer, /payment, and /bill. Rate limits apply: 500 requests per minute for production apps. Always implement exponential backoff for 429 responses. ## Stripe Payment Integration Stripe provides both client-side (Stripe.js) and server-side APIs. For PCI compliance, never pass raw card numbers through your server—use Stripe Elements or the Payment Intents API. Webhooks are essential for handling asynchronous events like payment succeeded or subscription renewed. Configure your webhook endpoint to verify signatures using the Stripe-Signature header. ## ShipStation Integration The ShipStation API is REST-based. Authentication uses API key and API secret in the Authorization header. Endpoints cover orders, shipments, carriers, and warehouses. Poll for new orders or use webhooks if available for your plan. Batch operations are supported for bulk label creation. ## Twilio SMS Integration Twilio's REST API requires Account SID and Auth Token. The Messaging API endpoint is /2010-04-01/Accounts/{AccountSid}/Messages.json. For two-way messaging, configure a webhook URL to receive incoming messages. Consider using a queue for high-volume outbound SMS to avoid rate limits. # PentaCodes Technical Reference and Integration Documentation # Version 1.0 | Last Updated March 2025 # This document contains technical reference material for common integrations and deployment procedures. ## QuickBooks Online Integration The QuickBooks Online API uses OAuth 2.0 for authentication. You will need to register your application in the Intuit Developer Portal to obtain client credentials. The base URL for the API is https://quickbooks.api.intuit.com/v3/company/{realmId}. Common endpoints include /invoice, /customer, /payment, and /bill. Rate limits apply: 500 requests per minute for production apps. Always implement exponential backoff for 429 responses. ## Stripe Payment Integration Stripe provides both client-side (Stripe.js) and server-side APIs. For PCI compliance, never pass raw card numbers through your server—use Stripe Elements or the Payment Intents API. Webhooks are essential for handling asynchronous events like payment succeeded or subscription renewed. Configure your webhook endpoint to verify signatures using the Stripe-Signature header. ## ShipStation Integration The ShipStation API is REST-based. Authentication uses API key and API secret in the Authorization header. Endpoints cover orders, shipments, carriers, and warehouses. Poll for new orders or use webhooks if available for your plan. Batch operations are supported for bulk label creation. ## Twilio SMS Integration Twilio's REST API requires Account SID and Auth Token. The Messaging API endpoint is /2010-04-01/Accounts/{AccountSid}/Messages.json. For two-way messaging, configure a webhook URL to receive incoming messages. Consider using a queue for high-volume outbound SMS to avoid rate limits. # PentaCodes Technical Reference and Integration Documentation # Version 1.0 | Last Updated March 2025 # This document contains technical reference material for common integrations and deployment procedures. ## QuickBooks Online Integration The QuickBooks Online API uses OAuth 2.0 for authentication. You will need to register your application in the Intuit Developer Portal to obtain client credentials. The base URL for the API is https://quickbooks.api.intuit.com/v3/company/{realmId}. Common endpoints include /invoice, /customer, /payment, and /bill. Rate limits apply: 500 requests per minute for production apps. Always implement exponential backoff for 429 responses. ## Stripe Payment Integration Stripe provides both client-side (Stripe.js) and server-side APIs. For PCI compliance, never pass raw card numbers through your server—use Stripe Elements or the Payment Intents API. Webhooks are essential for handling asynchronous events like payment succeeded or subscription renewed. Configure your webhook endpoint to verify signatures using the Stripe-Signature header. ## ShipStation Integration The ShipStation API is REST-based. Authentication uses API key and API secret in the Authorization header. Endpoints cover orders, shipments, carriers, and warehouses. Poll for new orders or use webhooks if available for your plan. Batch operations are supported for bulk label creation. ## Twilio SMS Integration Twilio's REST API requires Account SID and Auth Token. The Messaging API endpoint is /2010-04-01/Accounts/{AccountSid}/Messages.json. For two-way messaging, configure a webhook URL to receive incoming messages. Consider using a queue for high-volume outbound SMS to avoid rate limits. # PentaCodes Technical Reference and Integration Documentation # Version 1.0 | Last Updated March 2025 # This document contains technical reference material for common integrations and deployment procedures. ## QuickBooks Online Integration The QuickBooks Online API uses OAuth 2.0 for authentication. You will need to register your application in the Intuit Developer Portal to obtain client credentials. The base URL for the API is https://quickbooks.api.intuit.com/v3/company/{realmId}. Common endpoints include /invoice, /customer, /payment, and /bill. Rate limits apply: 500 requests per minute for production apps. Always implement exponential backoff for 429 responses. ## Stripe Payment Integration Stripe provides both client-side (Stripe.js) and server-side APIs. For PCI compliance, never pass raw card numbers through your server—use Stripe Elements or the Payment Intents API. Webhooks are essential for handling asynchronous events like payment succeeded or subscription renewed. Configure your webhook endpoint to verify signatures using the Stripe-Signature header. ## ShipStation Integration The ShipStation API is REST-based. Authentication uses API key and API secret in the Authorization header. Endpoints cover orders, shipments, carriers, and warehouses. Poll for new orders or use webhooks if available for your plan. Batch operations are supported for bulk label creation. ## Twilio SMS Integration Twilio's REST API requires Account SID and Auth Token. The Messaging API endpoint is /2010-04-01/Accounts/{AccountSid}/Messages.json. For two-way messaging, configure a webhook URL to receive incoming messages. Consider using a queue for high-volume outbound SMS to avoid rate limits. # PentaCodes Technical Reference and Integration Documentation # Version 1.0 | Last Updated March 2025 # This document contains technical reference material for common integrations and deployment procedures. ## QuickBooks Online Integration The QuickBooks Online API uses OAuth 2.0 for authentication. You will need to register your application in the Intuit Developer Portal to obtain client credentials. The base URL for the API is https://quickbooks.api.intuit.com/v3/company/{realmId}. Common endpoints include /invoice, /customer, /payment, and /bill. Rate limits apply: 500 requests per minute for production apps. Always implement exponential backoff for 429 responses. ## Stripe Payment Integration Stripe provides both client-side (Stripe.js) and server-side APIs. For PCI compliance, never pass raw card numbers through your server—use Stripe Elements or the Payment Intents API. Webhooks are essential for handling asynchronous events like payment succeeded or subscription renewed. Configure your webhook endpoint to verify signatures using the Stripe-Signature header. ## ShipStation Integration The ShipStation API is REST-based. Authentication uses API key and API secret in the Authorization header. Endpoints cover orders, shipments, carriers, and warehouses. Poll for new orders or use webhooks if available for your plan. Batch operations are supported for bulk label creation. ## Twilio SMS Integration Twilio's REST API requires Account SID and Auth Token. The Messaging API endpoint is /2010-04-01/Accounts/{AccountSid}/Messages.json. For two-way messaging, configure a webhook URL to receive incoming messages. Consider using a queue for high-volume outbound SMS to avoid rate limits. # PentaCodes Technical Reference and Integration Documentation # Version 1.0 | Last Updated March 2025 # This document contains technical reference material for common integrations and deployment procedures. ## QuickBooks Online Integration The QuickBooks Online API uses OAuth 2.0 for authentication. You will need to register your application in the Intuit Developer Portal to obtain client credentials. The base URL for the API is https://quickbooks.api.intuit.com/v3/company/{realmId}. Common endpoints include /invoice, /customer, /payment, and /bill. Rate limits apply: 500 requests per minute for production apps. Always implement exponential backoff for 429 responses. ## Stripe Payment Integration Stripe provides both client-side (Stripe.js) and server-side APIs. For PCI compliance, never pass raw card numbers through your server—use Stripe Elements or the Payment Intents API. Webhooks are essential for handling asynchronous events like payment succeeded or subscription renewed. Configure your webhook endpoint to verify signatures using the Stripe-Signature header. ## ShipStation Integration The ShipStation API is REST-based. Authentication uses API key and API secret in the Authorization header. Endpoints cover orders, shipments, carriers, and warehouses. Poll for new orders or use webhooks if available for your plan. Batch operations are supported for bulk label creation. ## Twilio SMS Integration Twilio's REST API requires Account SID and Auth Token. The Messaging API endpoint is /2010-04-01/Accounts/{AccountSid}/Messages.json. For two-way messaging, configure a webhook URL to receive incoming messages. Consider using a queue for high-volume outbound SMS to avoid rate limits. # PentaCodes Technical Reference and Integration Documentation # Version 1.0 | Last Updated March 2025 # This document contains technical reference material for common integrations and deployment procedures. ## QuickBooks Online Integration The QuickBooks Online API uses OAuth 2.0 for authentication. You will need to register your application in the Intuit Developer Portal to obtain client credentials. The base URL for the API is https://quickbooks.api.intuit.com/v3/company/{realmId}. Common endpoints include /invoice, /customer, /payment, and /bill. Rate limits apply: 500 requests per minute for production apps. Always implement exponential backoff for 429 responses. ## Stripe Payment Integration Stripe provides both client-side (Stripe.js) and server-side APIs. For PCI compliance, never pass raw card numbers through your server—use Stripe Elements or the Payment Intents API. Webhooks are essential for handling asynchronous events like payment succeeded or subscription renewed. Configure your webhook endpoint to verify signatures using the Stripe-Signature header. ## ShipStation Integration The ShipStation API is REST-based. Authentication uses API key and API secret in the Authorization header. Endpoints cover orders, shipments, carriers, and warehouses. Poll for new orders or use webhooks if available for your plan. Batch operations are supported for bulk label creation. ## Twilio SMS Integration Twilio's REST API requires Account SID and Auth Token. The Messaging API endpoint is /2010-04-01/Accounts/{AccountSid}/Messages.json. For two-way messaging, configure a webhook URL to receive incoming messages. Consider using a queue for high-volume outbound SMS to avoid rate limits. # PentaCodes Technical Reference and Integration Documentation # Version 1.0 | Last Updated March 2025 # This document contains technical reference material for common integrations and deployment procedures. ## QuickBooks Online Integration The QuickBooks Online API uses OAuth 2.0 for authentication. You will need to register your application in the Intuit Developer Portal to obtain client credentials. The base URL for the API is https://quickbooks.api.intuit.com/v3/company/{realmId}. Common endpoints include /invoice, /customer, /payment, and /bill. Rate limits apply: 500 requests per minute for production apps. Always implement exponential backoff for 429 responses. ## Stripe Payment Integration Stripe provides both client-side (Stripe.js) and server-side APIs. For PCI compliance, never pass raw card numbers through your server—use Stripe Elements or the Payment Intents API. Webhooks are essential for handling asynchronous events like payment succeeded or subscription renewed. Configure your webhook endpoint to verify signatures using the Stripe-Signature header. ## ShipStation Integration The ShipStation API is REST-based. Authentication uses API key and API secret in the Authorization header. Endpoints cover orders, shipments, carriers, and warehouses. Poll for new orders or use webhooks if available for your plan. Batch operations are supported for bulk label creation. ## Twilio SMS Integration Twilio's REST API requires Account SID and Auth Token. The Messaging API endpoint is /2010-04-01/Accounts/{AccountSid}/Messages.json. For two-way messaging, configure a webhook URL to receive incoming messages. Consider using a queue for high-volume outbound SMS to avoid rate limits. # PentaCodes Technical Reference and Integration Documentation # Version 1.0 | Last Updated March 2025 # This document contains technical reference material for common integrations and deployment procedures. ## QuickBooks Online Integration The QuickBooks Online API uses OAuth 2.0 for authentication. You will need to register your application in the Intuit Developer Portal to obtain client credentials. The base URL for the API is https://quickbooks.api.intuit.com/v3/company/{realmId}. Common endpoints include /invoice, /customer, /payment, and /bill. Rate limits apply: 500 requests per minute for production apps. Always implement exponential backoff for 429 responses. ## Stripe Payment Integration Stripe provides both client-side (Stripe.js) and server-side APIs. For PCI compliance, never pass raw card numbers through your server—use Stripe Elements or the Payment Intents API. Webhooks are essential for handling asynchronous events like payment succeeded or subscription renewed. Configure your webhook endpoint to verify signatures using the Stripe-Signature header. ## ShipStation Integration The ShipStation API is REST-based. Authentication uses API key and API secret in the Authorization header. Endpoints cover orders, shipments, carriers, and warehouses. Poll for new orders or use webhooks if available for your plan. Batch operations are supported for bulk label creation. ## Twilio SMS Integration Twilio's REST API requires Account SID and Auth Token. The Messaging API endpoint is /2010-04-01/Accounts/{AccountSid}/Messages.json. For two-way messaging, configure a webhook URL to receive incoming messages. Consider using a queue for high-volume outbound SMS to avoid rate limits. # PentaCodes Technical Reference and Integration Documentation # Version 1.0 | Last Updated March 2025 # This document contains technical reference material for common integrations and deployment procedures. ## QuickBooks Online Integration The QuickBooks Online API uses OAuth 2.0 for authentication. You will need to register your application in the Intuit Developer Portal to obtain client credentials. The base URL for the API is https://quickbooks.api.intuit.com/v3/company/{realmId}. Common endpoints include /invoice, /customer, /payment, and /bill. Rate limits apply: 500 requests per minute for production apps. Always implement exponential backoff for 429 responses. ## Stripe Payment Integration Stripe provides both client-side (Stripe.js) and server-side APIs. For PCI compliance, never pass raw card numbers through your server—use Stripe Elements or the Payment Intents API. Webhooks are essential for handling asynchronous events like payment succeeded or subscription renewed. Configure your webhook endpoint to verify signatures using the Stripe-Signature header. ## ShipStation Integration The ShipStation API is REST-based. Authentication uses API key and API secret in the Authorization header. Endpoints cover orders, shipments, carriers, and warehouses. Poll for new orders or use webhooks if available for your plan. Batch operations are supported for bulk label creation. ## Twilio SMS Integration Twilio's REST API requires Account SID and Auth Token. The Messaging API endpoint is /2010-04-01/Accounts/{AccountSid}/Messages.json. For two-way messaging, configure a webhook URL to receive incoming messages. Consider using a queue for high-volume outbound SMS to avoid rate limits. # PentaCodes Technical Reference and Integration Documentation # Version 1.0 | Last Updated March 2025 # This document contains technical reference material for common integrations and deployment procedures. ## QuickBooks Online Integration The QuickBooks Online API uses OAuth 2.0 for authentication. You will need to register your application in the Intuit Developer Portal to obtain client credentials. The base URL for the API is https://quickbooks.api.intuit.com/v3/company/{realmId}. Common endpoints include /invoice, /customer, /payment, and /bill. Rate limits apply: 500 requests per minute for production apps. Always implement exponential backoff for 429 responses. ## Stripe Payment Integration Stripe provides both client-side (Stripe.js) and server-side APIs. For PCI compliance, never pass raw card numbers through your server—use Stripe Elements or the Payment Intents API. Webhooks are essential for handling asynchronous events like payment succeeded or subscription renewed. Configure your webhook endpoint to verify signatures using the Stripe-Signature header. ## ShipStation Integration The ShipStation API is REST-based. Authentication uses API key and API secret in the Authorization header. Endpoints cover orders, shipments, carriers, and warehouses. Poll for new orders or use webhooks if available for your plan. Batch operations are supported for bulk label creation. ## Twilio SMS Integration Twilio's REST API requires Account SID and Auth Token. The Messaging API endpoint is /2010-04-01/Accounts/{AccountSid}/Messages.json. For two-way messaging, configure a webhook URL to receive incoming messages. Consider using a queue for high-volume outbound SMS to avoid rate limits. # PentaCodes Technical Reference and Integration Documentation # Version 1.0 | Last Updated March 2025 # This document contains technical reference material for common integrations and deployment procedures. ## QuickBooks Online Integration The QuickBooks Online API uses OAuth 2.0 for authentication. You will need to register your application in the Intuit Developer Portal to obtain client credentials. The base URL for the API is https://quickbooks.api.intuit.com/v3/company/{realmId}. Common endpoints include /invoice, /customer, /payment, and /bill. Rate limits apply: 500 requests per minute for production apps. Always implement exponential backoff for 429 responses. ## Stripe Payment Integration Stripe provides both client-side (Stripe.js) and server-side APIs. For PCI compliance, never pass raw card numbers through your server—use Stripe Elements or the Payment Intents API. Webhooks are essential for handling asynchronous events like payment succeeded or subscription renewed. Configure your webhook endpoint to verify signatures using the Stripe-Signature header. ## ShipStation Integration The ShipStation API is REST-based. Authentication uses API key and API secret in the Authorization header. Endpoints cover orders, shipments, carriers, and warehouses. Poll for new orders or use webhooks if available for your plan. Batch operations are supported for bulk label creation. ## Twilio SMS Integration Twilio's REST API requires Account SID and Auth Token. The Messaging API endpoint is /2010-04-01/Accounts/{AccountSid}/Messages.json. For two-way messaging, configure a webhook URL to receive incoming messages. Consider using a queue for high-volume outbound SMS to avoid rate limits. # PentaCodes Technical Reference and Integration Documentation # Version 1.0 | Last Updated March 2025 # This document contains technical reference material for common integrations and deployment procedures. ## QuickBooks Online Integration The QuickBooks Online API uses OAuth 2.0 for authentication. You will need to register your application in the Intuit Developer Portal to obtain client credentials. The base URL for the API is https://quickbooks.api.intuit.com/v3/company/{realmId}. Common endpoints include /invoice, /customer, /payment, and /bill. Rate limits apply: 500 requests per minute for production apps. Always implement exponential backoff for 429 responses. ## Stripe Payment Integration Stripe provides both client-side (Stripe.js) and server-side APIs. For PCI compliance, never pass raw card numbers through your server—use Stripe Elements or the Payment Intents API. Webhooks are essential for handling asynchronous events like payment succeeded or subscription renewed. Configure your webhook endpoint to verify signatures using the Stripe-Signature header. ## ShipStation Integration The ShipStation API is REST-based. Authentication uses API key and API secret in the Authorization header. Endpoints cover orders, shipments, carriers, and warehouses. Poll for new orders or use webhooks if available for your plan. Batch operations are supported for bulk label creation. ## Twilio SMS Integration Twilio's REST API requires Account SID and Auth Token. The Messaging API endpoint is /2010-04-01/Accounts/{AccountSid}/Messages.json. For two-way messaging, configure a webhook URL to receive incoming messages. Consider using a queue for high-volume outbound SMS to avoid rate limits. # PentaCodes Technical Reference and Integration Documentation # Version 1.0 | Last Updated March 2025 # This document contains technical reference material for common integrations and deployment procedures. ## QuickBooks Online Integration The QuickBooks Online API uses OAuth 2.0 for authentication. You will need to register your application in the Intuit Developer Portal to obtain client credentials. The base URL for the API is https://quickbooks.api.intuit.com/v3/company/{realmId}. Common endpoints include /invoice, /customer, /payment, and /bill. Rate limits apply: 500 requests per minute for production apps. Always implement exponential backoff for 429 responses. ## Stripe Payment Integration Stripe provides both client-side (Stripe.js) and server-side APIs. For PCI compliance, never pass raw card numbers through your server—use Stripe Elements or the Payment Intents API. Webhooks are essential for handling asynchronous events like payment succeeded or subscription renewed. Configure your webhook endpoint to verify signatures using the Stripe-Signature header. ## ShipStation Integration The ShipStation API is REST-based. Authentication uses API key and API secret in the Authorization header. Endpoints cover orders, shipments, carriers, and warehouses. Poll for new orders or use webhooks if available for your plan. Batch operations are supported for bulk label creation. ## Twilio SMS Integration Twilio's REST API requires Account SID and Auth Token. The Messaging API endpoint is /2010-04-01/Accounts/{AccountSid}/Messages.json. For two-way messaging, configure a webhook URL to receive incoming messages. Consider using a queue for high-volume outbound SMS to avoid rate limits. # PentaCodes Technical Reference and Integration Documentation # Version 1.0 | Last Updated March 2025 # This document contains technical reference material for common integrations and deployment procedures. ## QuickBooks Online Integration The QuickBooks Online API uses OAuth 2.0 for authentication. You will need to register your application in the Intuit Developer Portal to obtain client credentials. The base URL for the API is https://quickbooks.api.intuit.com/v3/company/{realmId}. Common endpoints include /invoice, /customer, /payment, and /bill. Rate limits apply: 500 requests per minute for production apps. Always implement exponential backoff for 429 responses. ## Stripe Payment Integration Stripe provides both client-side (Stripe.js) and server-side APIs. For PCI compliance, never pass raw card numbers through your server—use Stripe Elements or the Payment Intents API. Webhooks are essential for handling asynchronous events like payment succeeded or subscription renewed. Configure your webhook endpoint to verify signatures using the Stripe-Signature header. ## ShipStation Integration The ShipStation API is REST-based. Authentication uses API key and API secret in the Authorization header. Endpoints cover orders, shipments, carriers, and warehouses. Poll for new orders or use webhooks if available for your plan. Batch operations are supported for bulk label creation. ## Twilio SMS Integration Twilio's REST API requires Account SID and Auth Token. The Messaging API endpoint is /2010-04-01/Accounts/{AccountSid}/Messages.json. For two-way messaging, configure a webhook URL to receive incoming messages. Consider using a queue for high-volume outbound SMS to avoid rate limits. # PentaCodes Technical Reference and Integration Documentation # Version 1.0 | Last Updated March 2025 # This document contains technical reference material for common integrations and deployment procedures. ## QuickBooks Online Integration The QuickBooks Online API uses OAuth 2.0 for authentication. You will need to register your application in the Intuit Developer Portal to obtain client credentials. The base URL for the API is https://quickbooks.api.intuit.com/v3/company/{realmId}. Common endpoints include /invoice, /customer, /payment, and /bill. Rate limits apply: 500 requests per minute for production apps. Always implement exponential backoff for 429 responses. ## Stripe Payment Integration Stripe provides both client-side (Stripe.js) and server-side APIs. For PCI compliance, never pass raw card numbers through your server—use Stripe Elements or the Payment Intents API. Webhooks are essential for handling asynchronous events like payment succeeded or subscription renewed. Configure your webhook endpoint to verify signatures using the Stripe-Signature header. ## ShipStation Integration The ShipStation API is REST-based. Authentication uses API key and API secret in the Authorization header. Endpoints cover orders, shipments, carriers, and warehouses. Poll for new orders or use webhooks if available for your plan. Batch operations are supported for bulk label creation. ## Twilio SMS Integration Twilio's REST API requires Account SID and Auth Token. The Messaging API endpoint is /2010-04-01/Accounts/{AccountSid}/Messages.json. For two-way messaging, configure a webhook URL to receive incoming messages. Consider using a queue for high-volume outbound SMS to avoid rate limits. # PentaCodes Technical Reference and Integration Documentation # Version 1.0 | Last Updated March 2025 # This document contains technical reference material for common integrations and deployment procedures. ## QuickBooks Online Integration The QuickBooks Online API uses OAuth 2.0 for authentication. You will need to register your application in the Intuit Developer Portal to obtain client credentials. The base URL for the API is https://quickbooks.api.intuit.com/v3/company/{realmId}. Common endpoints include /invoice, /customer, /payment, and /bill. Rate limits apply: 500 requests per minute for production apps. Always implement exponential backoff for 429 responses. ## Stripe Payment Integration Stripe provides both client-side (Stripe.js) and server-side APIs. For PCI compliance, never pass raw card numbers through your server—use Stripe Elements or the Payment Intents API. Webhooks are essential for handling asynchronous events like payment succeeded or subscription renewed. Configure your webhook endpoint to verify signatures using the Stripe-Signature header. ## ShipStation Integration The ShipStation API is REST-based. Authentication uses API key and API secret in the Authorization header. Endpoints cover orders, shipments, carriers, and warehouses. Poll for new orders or use webhooks if available for your plan. Batch operations are supported for bulk label creation. ## Twilio SMS Integration Twilio's REST API requires Account SID and Auth Token. The Messaging API endpoint is /2010-04-01/Accounts/{AccountSid}/Messages.json. For two-way messaging, configure a webhook URL to receive incoming messages. Consider using a queue for high-volume outbound SMS to avoid rate limits. # PentaCodes Technical Reference and Integration Documentation # Version 1.0 | Last Updated March 2025 # This document contains technical reference material for common integrations and deployment procedures. ## QuickBooks Online Integration The QuickBooks Online API uses OAuth 2.0 for authentication. You will need to register your application in the Intuit Developer Portal to obtain client credentials. The base URL for the API is https://quickbooks.api.intuit.com/v3/company/{realmId}. Common endpoints include /invoice, /customer, /payment, and /bill. Rate limits apply: 500 requests per minute for production apps. Always implement exponential backoff for 429 responses. ## Stripe Payment Integration Stripe provides both client-side (Stripe.js) and server-side APIs. For PCI compliance, never pass raw card numbers through your server—use Stripe Elements or the Payment Intents API. Webhooks are essential for handling asynchronous events like payment succeeded or subscription renewed. Configure your webhook endpoint to verify signatures using the Stripe-Signature header. ## ShipStation Integration The ShipStation API is REST-based. Authentication uses API key and API secret in the Authorization header. Endpoints cover orders, shipments, carriers, and warehouses. Poll for new orders or use webhooks if available for your plan. Batch operations are supported for bulk label creation. ## Twilio SMS Integration Twilio's REST API requires Account SID and Auth Token. The Messaging API endpoint is /2010-04-01/Accounts/{AccountSid}/Messages.json. For two-way messaging, configure a webhook URL to receive incoming messages. Consider using a queue for high-volume outbound SMS to avoid rate limits. # PentaCodes Technical Reference and Integration Documentation # Version 1.0 | Last Updated March 2025 # This document contains technical reference material for common integrations and deployment procedures. ## QuickBooks Online Integration The QuickBooks Online API uses OAuth 2.0 for authentication. You will need to register your application in the Intuit Developer Portal to obtain client credentials. The base URL for the API is https://quickbooks.api.intuit.com/v3/company/{realmId}. Common endpoints include /invoice, /customer, /payment, and /bill. Rate limits apply: 500 requests per minute for production apps. Always implement exponential backoff for 429 responses. ## Stripe Payment Integration Stripe provides both client-side (Stripe.js) and server-side APIs. For PCI compliance, never pass raw card numbers through your server—use Stripe Elements or the Payment Intents API. Webhooks are essential for handling asynchronous events like payment succeeded or subscription renewed. Configure your webhook endpoint to verify signatures using the Stripe-Signature header. ## ShipStation Integration The ShipStation API is REST-based. Authentication uses API key and API secret in the Authorization header. Endpoints cover orders, shipments, carriers, and warehouses. Poll for new orders or use webhooks if available for your plan. Batch operations are supported for bulk label creation. ## Twilio SMS Integration Twilio's REST API requires Account SID and Auth Token. The Messaging API endpoint is /2010-04-01/Accounts/{AccountSid}/Messages.json. For two-way messaging, configure a webhook URL to receive incoming messages. Consider using a queue for high-volume outbound SMS to avoid rate limits. # PentaCodes Technical Reference and Integration Documentation # Version 1.0 | Last Updated March 2025 # This document contains technical reference material for common integrations and deployment procedures. ## QuickBooks Online Integration The QuickBooks Online API uses OAuth 2.0 for authentication. You will need to register your application in the Intuit Developer Portal to obtain client credentials. The base URL for the API is https://quickbooks.api.intuit.com/v3/company/{realmId}. Common endpoints include /invoice, /customer, /payment, and /bill. Rate limits apply: 500 requests per minute for production apps. Always implement exponential backoff for 429 responses. ## Stripe Payment Integration Stripe provides both client-side (Stripe.js) and server-side APIs. For PCI compliance, never pass raw card numbers through your server—use Stripe Elements or the Payment Intents API. Webhooks are essential for handling asynchronous events like payment succeeded or subscription renewed. Configure your webhook endpoint to verify signatures using the Stripe-Signature header. ## ShipStation Integration The ShipStation API is REST-based. Authentication uses API key and API secret in the Authorization header. Endpoints cover orders, shipments, carriers, and warehouses. Poll for new orders or use webhooks if available for your plan. Batch operations are supported for bulk label creation. ## Twilio SMS Integration Twilio's REST API requires Account SID and Auth Token. The Messaging API endpoint is /2010-04-01/Accounts/{AccountSid}/Messages.json. For two-way messaging, configure a webhook URL to receive incoming messages. Consider using a queue for high-volume outbound SMS to avoid rate limits. # PentaCodes Technical Reference and Integration Documentation # Version 1.0 | Last Updated March 2025 # This document contains technical reference material for common integrations and deployment procedures. ## QuickBooks Online Integration The QuickBooks Online API uses OAuth 2.0 for authentication. You will need to register your application in the Intuit Developer Portal to obtain client credentials. The base URL for the API is https://quickbooks.api.intuit.com/v3/company/{realmId}. Common endpoints include /invoice, /customer, /payment, and /bill. Rate limits apply: 500 requests per minute for production apps. Always implement exponential backoff for 429 responses. ## Stripe Payment Integration Stripe provides both client-side (Stripe.js) and server-side APIs. For PCI compliance, never pass raw card numbers through your server—use Stripe Elements or the Payment Intents API. Webhooks are essential for handling asynchronous events like payment succeeded or subscription renewed. Configure your webhook endpoint to verify signatures using the Stripe-Signature header. ## ShipStation Integration The ShipStation API is REST-based. Authentication uses API key and API secret in the Authorization header. Endpoints cover orders, shipments, carriers, and warehouses. Poll for new orders or use webhooks if available for your plan. Batch operations are supported for bulk label creation. ## Twilio SMS Integration Twilio's REST API requires Account SID and Auth Token. The Messaging API endpoint is /2010-04-01/Accounts/{AccountSid}/Messages.json. For two-way messaging, configure a webhook URL to receive incoming messages. Consider using a queue for high-volume outbound SMS to avoid rate limits. # PentaCodes Technical Reference and Integration Documentation # Version 1.0 | Last Updated March 2025 # This document contains technical reference material for common integrations and deployment procedures. ## QuickBooks Online Integration The QuickBooks Online API uses OAuth 2.0 for authentication. You will need to register your application in the Intuit Developer Portal to obtain client credentials. The base URL for the API is https://quickbooks.api.intuit.com/v3/company/{realmId}. Common endpoints include /invoice, /customer, /payment, and /bill. Rate limits apply: 500 requests per minute for production apps. Always implement exponential backoff for 429 responses. ## Stripe Payment Integration Stripe provides both client-side (Stripe.js) and server-side APIs. For PCI compliance, never pass raw card numbers through your server—use Stripe Elements or the Payment Intents API. Webhooks are essential for handling asynchronous events like payment succeeded or subscription renewed. Configure your webhook endpoint to verify signatures using the Stripe-Signature header. ## ShipStation Integration The ShipStation API is REST-based. Authentication uses API key and API secret in the Authorization header. Endpoints cover orders, shipments, carriers, and warehouses. Poll for new orders or use webhooks if available for your plan. Batch operations are supported for bulk label creation. ## Twilio SMS Integration Twilio's REST API requires Account SID and Auth Token. The Messaging API endpoint is /2010-04-01/Accounts/{AccountSid}/Messages.json. For two-way messaging, configure a webhook URL to receive incoming messages. Consider using a queue for high-volume outbound SMS to avoid rate limits. # PentaCodes Technical Reference and Integration Documentation # Version 1.0 | Last Updated March 2025 # This document contains technical reference material for common integrations and deployment procedures. ## QuickBooks Online Integration The QuickBooks Online API uses OAuth 2.0 for authentication. You will need to register your application in the Intuit Developer Portal to obtain client credentials. The base URL for the API is https://quickbooks.api.intuit.com/v3/company/{realmId}. Common endpoints include /invoice, /customer, /payment, and /bill. Rate limits apply: 500 requests per minute for production apps. Always implement exponential backoff for 429 responses. ## Stripe Payment Integration Stripe provides both client-side (Stripe.js) and server-side APIs. For PCI compliance, never pass raw card numbers through your server—use Stripe Elements or the Payment Intents API. Webhooks are essential for handling asynchronous events like payment succeeded or subscription renewed. Configure your webhook endpoint to verify signatures using the Stripe-Signature header. ## ShipStation Integration The ShipStation API is REST-based. Authentication uses API key and API secret in the Authorization header. Endpoints cover orders, shipments, carriers, and warehouses. Poll for new orders or use webhooks if available for your plan. Batch operations are supported for bulk label creation. ## Twilio SMS Integration Twilio's REST API requires Account SID and Auth Token. The Messaging API endpoint is /2010-04-01/Accounts/{AccountSid}/Messages.json. For two-way messaging, configure a webhook URL to receive incoming messages. Consider using a queue for high-volume outbound SMS to avoid rate limits. # PentaCodes Technical Reference and Integration Documentation # Version 1.0 | Last Updated March 2025 # This document contains technical reference material for common integrations and deployment procedures. ## QuickBooks Online Integration The QuickBooks Online API uses OAuth 2.0 for authentication. You will need to register your application in the Intuit Developer Portal to obtain client credentials. The base URL for the API is https://quickbooks.api.intuit.com/v3/company/{realmId}. Common endpoints include /invoice, /customer, /payment, and /bill. Rate limits apply: 500 requests per minute for production apps. Always implement exponential backoff for 429 responses. ## Stripe Payment Integration Stripe provides both client-side (Stripe.js) and server-side APIs. For PCI compliance, never pass raw card numbers through your server—use Stripe Elements or the Payment Intents API. Webhooks are essential for handling asynchronous events like payment succeeded or subscription renewed. Configure your webhook endpoint to verify signatures using the Stripe-Signature header. ## ShipStation Integration The ShipStation API is REST-based. Authentication uses API key and API secret in the Authorization header. Endpoints cover orders, shipments, carriers, and warehouses. Poll for new orders or use webhooks if available for your plan. Batch operations are supported for bulk label creation. ## Twilio SMS Integration Twilio's REST API requires Account SID and Auth Token. The Messaging API endpoint is /2010-04-01/Accounts/{AccountSid}/Messages.json. For two-way messaging, configure a webhook URL to receive incoming messages. Consider using a queue for high-volume outbound SMS to avoid rate limits. # PentaCodes Technical Reference and Integration Documentation # Version 1.0 | Last Updated March 2025 # This document contains technical reference material for common integrations and deployment procedures. ## QuickBooks Online Integration The QuickBooks Online API uses OAuth 2.0 for authentication. You will need to register your application in the Intuit Developer Portal to obtain client credentials. The base URL for the API is https://quickbooks.api.intuit.com/v3/company/{realmId}. Common endpoints include /invoice, /customer, /payment, and /bill. Rate limits apply: 500 requests per minute for production apps. Always implement exponential backoff for 429 responses. ## Stripe Payment Integration Stripe provides both client-side (Stripe.js) and server-side APIs. For PCI compliance, never pass raw card numbers through your server—use Stripe Elements or the Payment Intents API. Webhooks are essential for handling asynchronous events like payment succeeded or subscription renewed. Configure your webhook endpoint to verify signatures using the Stripe-Signature header. ## ShipStation Integration The ShipStation API is REST-based. Authentication uses API key and API secret in the Authorization header. Endpoints cover orders, shipments, carriers, and warehouses. Poll for new orders or use webhooks if available for your plan. Batch operations are supported for bulk label creation. ## Twilio SMS Integration Twilio's REST API requires Account SID and Auth Token. The Messaging API endpoint is /2010-04-01/Accounts/{AccountSid}/Messages.json. For two-way messaging, configure a webhook URL to receive incoming messages. Consider using a queue for high-volume outbound SMS to avoid rate limits. # PentaCodes Technical Reference and Integration Documentation # Version 1.0 | Last Updated March 2025 # This document contains technical reference material for common integrations and deployment procedures. ## QuickBooks Online Integration The QuickBooks Online API uses OAuth 2.0 for authentication. You will need to register your application in the Intuit Developer Portal to obtain client credentials. The base URL for the API is https://quickbooks.api.intuit.com/v3/company/{realmId}. Common endpoints include /invoice, /customer, /payment, and /bill. Rate limits apply: 500 requests per minute for production apps. Always implement exponential backoff for 429 responses. ## Stripe Payment Integration Stripe provides both client-side (Stripe.js) and server-side APIs. For PCI compliance, never pass raw card numbers through your server—use Stripe Elements or the Payment Intents API. Webhooks are essential for handling asynchronous events like payment succeeded or subscription renewed. Configure your webhook endpoint to verify signatures using the Stripe-Signature header. ## ShipStation Integration The ShipStation API is REST-based. Authentication uses API key and API secret in the Authorization header. Endpoints cover orders, shipments, carriers, and warehouses. Poll for new orders or use webhooks if available for your plan. Batch operations are supported for bulk label creation. ## Twilio SMS Integration Twilio's REST API requires Account SID and Auth Token. The Messaging API endpoint is /2010-04-01/Accounts/{AccountSid}/Messages.json. For two-way messaging, configure a webhook URL to receive incoming messages. Consider using a queue for high-volume outbound SMS to avoid rate limits. # PentaCodes Technical Reference and Integration Documentation # Version 1.0 | Last Updated March 2025 # This document contains technical reference material for common integrations and deployment procedures. ## QuickBooks Online Integration The QuickBooks Online API uses OAuth 2.0 for authentication. You will need to register your application in the Intuit Developer Portal to obtain client credentials. The base URL for the API is https://quickbooks.api.intuit.com/v3/company/{realmId}. Common endpoints include /invoice, /customer, /payment, and /bill. Rate limits apply: 500 requests per minute for production apps. Always implement exponential backoff for 429 responses. ## Stripe Payment Integration Stripe provides both client-side (Stripe.js) and server-side APIs. For PCI compliance, never pass raw card numbers through your server—use Stripe Elements or the Payment Intents API. Webhooks are essential for handling asynchronous events like payment succeeded or subscription renewed. Configure your webhook endpoint to verify signatures using the Stripe-Signature header. ## ShipStation Integration The ShipStation API is REST-based. Authentication uses API key and API secret in the Authorization header. Endpoints cover orders, shipments, carriers, and warehouses. Poll for new orders or use webhooks if available for your plan. Batch operations are supported for bulk label creation. ## Twilio SMS Integration Twilio's REST API requires Account SID and Auth Token. The Messaging API endpoint is /2010-04-01/Accounts/{AccountSid}/Messages.json. For two-way messaging, configure a webhook URL to receive incoming messages. Consider using a queue for high-volume outbound SMS to avoid rate limits. # PentaCodes Technical Reference and Integration Documentation # Version 1.0 | Last Updated March 2025 # This document contains technical reference material for common integrations and deployment procedures. ## QuickBooks Online Integration The QuickBooks Online API uses OAuth 2.0 for authentication. You will need to register your application in the Intuit Developer Portal to obtain client credentials. The base URL for the API is https://quickbooks.api.intuit.com/v3/company/{realmId}. Common endpoints include /invoice, /customer, /payment, and /bill. Rate limits apply: 500 requests per minute for production apps. Always implement exponential backoff for 429 responses. ## Stripe Payment Integration Stripe provides both client-side (Stripe.js) and server-side APIs. For PCI compliance, never pass raw card numbers through your server—use Stripe Elements or the Payment Intents API. Webhooks are essential for handling asynchronous events like payment succeeded or subscription renewed. Configure your webhook endpoint to verify signatures using the Stripe-Signature header. ## ShipStation Integration The ShipStation API is REST-based. Authentication uses API key and API secret in the Authorization header. Endpoints cover orders, shipments, carriers, and warehouses. Poll for new orders or use webhooks if available for your plan. Batch operations are supported for bulk label creation. ## Twilio SMS Integration Twilio's REST API requires Account SID and Auth Token. The Messaging API endpoint is /2010-04-01/Accounts/{AccountSid}/Messages.json. For two-way messaging, configure a webhook URL to receive incoming messages. Consider using a queue for high-volume outbound SMS to avoid rate limits. # PentaCodes Technical Reference and Integration Documentation # Version 1.0 | Last Updated March 2025 # This document contains technical reference material for common integrations and deployment procedures. ## QuickBooks Online Integration The QuickBooks Online API uses OAuth 2.0 for authentication. You will need to register your application in the Intuit Developer Portal to obtain client credentials. The base URL for the API is https://quickbooks.api.intuit.com/v3/company/{realmId}. Common endpoints include /invoice, /customer, /payment, and /bill. Rate limits apply: 500 requests per minute for production apps. Always implement exponential backoff for 429 responses. ## Stripe Payment Integration Stripe provides both client-side (Stripe.js) and server-side APIs. For PCI compliance, never pass raw card numbers through your server—use Stripe Elements or the Payment Intents API. Webhooks are essential for handling asynchronous events like payment succeeded or subscription renewed. Configure your webhook endpoint to verify signatures using the Stripe-Signature header. ## ShipStation Integration The ShipStation API is REST-based. Authentication uses API key and API secret in the Authorization header. Endpoints cover orders, shipments, carriers, and warehouses. Poll for new orders or use webhooks if available for your plan. Batch operations are supported for bulk label creation. ## Twilio SMS Integration Twilio's REST API requires Account SID and Auth Token. The Messaging API endpoint is /2010-04-01/Accounts/{AccountSid}/Messages.json. For two-way messaging, configure a webhook URL to receive incoming messages. Consider using a queue for high-volume outbound SMS to avoid rate limits. # PentaCodes Technical Reference and Integration Documentation # Version 1.0 | Last Updated March 2025 # This document contains technical reference material for common integrations and deployment procedures. ## QuickBooks Online Integration The QuickBooks Online API uses OAuth 2.0 for authentication. You will need to register your application in the Intuit Developer Portal to obtain client credentials. The base URL for the API is https://quickbooks.api.intuit.com/v3/company/{realmId}. Common endpoints include /invoice, /customer, /payment, and /bill. Rate limits apply: 500 requests per minute for production apps. Always implement exponential backoff for 429 responses. ## Stripe Payment Integration Stripe provides both client-side (Stripe.js) and server-side APIs. For PCI compliance, never pass raw card numbers through your server—use Stripe Elements or the Payment Intents API. Webhooks are essential for handling asynchronous events like payment succeeded or subscription renewed. Configure your webhook endpoint to verify signatures using the Stripe-Signature header. ## ShipStation Integration The ShipStation API is REST-based. Authentication uses API key and API secret in the Authorization header. Endpoints cover orders, shipments, carriers, and warehouses. Poll for new orders or use webhooks if available for your plan. Batch operations are supported for bulk label creation. ## Twilio SMS Integration Twilio's REST API requires Account SID and Auth Token. The Messaging API endpoint is /2010-04-01/Accounts/{AccountSid}/Messages.json. For two-way messaging, configure a webhook URL to receive incoming messages. Consider using a queue for high-volume outbound SMS to avoid rate limits. # PentaCodes Technical Reference and Integration Documentation # Version 1.0 | Last Updated March 2025 # This document contains technical reference material for common integrations and deployment procedures. ## QuickBooks Online Integration The QuickBooks Online API uses OAuth 2.0 for authentication. You will need to register your application in the Intuit Developer Portal to obtain client credentials. The base URL for the API is https://quickbooks.api.intuit.com/v3/company/{realmId}. Common endpoints include /invoice, /customer, /payment, and /bill. Rate limits apply: 500 requests per minute for production apps. Always implement exponential backoff for 429 responses. ## Stripe Payment Integration Stripe provides both client-side (Stripe.js) and server-side APIs. For PCI compliance, never pass raw card numbers through your server—use Stripe Elements or the Payment Intents API. Webhooks are essential for handling asynchronous events like payment succeeded or subscription renewed. Configure your webhook endpoint to verify signatures using the Stripe-Signature header. ## ShipStation Integration The ShipStation API is REST-based. Authentication uses API key and API secret in the Authorization header. Endpoints cover orders, shipments, carriers, and warehouses. Poll for new orders or use webhooks if available for your plan. Batch operations are supported for bulk label creation. ## Twilio SMS Integration Twilio's REST API requires Account SID and Auth Token. The Messaging API endpoint is /2010-04-01/Accounts/{AccountSid}/Messages.json. For two-way messaging, configure a webhook URL to receive incoming messages. Consider using a queue for high-volume outbound SMS to avoid rate limits. # PentaCodes Technical Reference and Integration Documentation # Version 1.0 | Last Updated March 2025 # This document contains technical reference material for common integrations and deployment procedures. ## QuickBooks Online Integration The QuickBooks Online API uses OAuth 2.0 for authentication. You will need to register your application in the Intuit Developer Portal to obtain client credentials. The base URL for the API is https://quickbooks.api.intuit.com/v3/company/{realmId}. Common endpoints include /invoice, /customer, /payment, and /bill. Rate limits apply: 500 requests per minute for production apps. Always implement exponential backoff for 429 responses. ## Stripe Payment Integration Stripe provides both client-side (Stripe.js) and server-side APIs. For PCI compliance, never pass raw card numbers through your server—use Stripe Elements or the Payment Intents API. Webhooks are essential for handling asynchronous events like payment succeeded or subscription renewed. Configure your webhook endpoint to verify signatures using the Stripe-Signature header. ## ShipStation Integration The ShipStation API is REST-based. Authentication uses API key and API secret in the Authorization header. Endpoints cover orders, shipments, carriers, and warehouses. Poll for new orders or use webhooks if available for your plan. Batch operations are supported for bulk label creation. ## Twilio SMS Integration Twilio's REST API requires Account SID and Auth Token. The Messaging API endpoint is /2010-04-01/Accounts/{AccountSid}/Messages.json. For two-way messaging, configure a webhook URL to receive incoming messages. Consider using a queue for high-volume outbound SMS to avoid rate limits. # PentaCodes Technical Reference and Integration Documentation # Version 1.0 | Last Updated March 2025 # This document contains technical reference material for common integrations and deployment procedures. ## QuickBooks Online Integration The QuickBooks Online API uses OAuth 2.0 for authentication. You will need to register your application in the Intuit Developer Portal to obtain client credentials. The base URL for the API is https://quickbooks.api.intuit.com/v3/company/{realmId}. Common endpoints include /invoice, /customer, /payment, and /bill. Rate limits apply: 500 requests per minute for production apps. Always implement exponential backoff for 429 responses. ## Stripe Payment Integration Stripe provides both client-side (Stripe.js) and server-side APIs. For PCI compliance, never pass raw card numbers through your server—use Stripe Elements or the Payment Intents API. Webhooks are essential for handling asynchronous events like payment succeeded or subscription renewed. Configure your webhook endpoint to verify signatures using the Stripe-Signature header. ## ShipStation Integration The ShipStation API is REST-based. Authentication uses API key and API secret in the Authorization header. Endpoints cover orders, shipments, carriers, and warehouses. Poll for new orders or use webhooks if available for your plan. Batch operations are supported for bulk label creation. ## Twilio SMS Integration Twilio's REST API requires Account SID and Auth Token. The Messaging API endpoint is /2010-04-01/Accounts/{AccountSid}/Messages.json. For two-way messaging, configure a webhook URL to receive incoming messages. Consider using a queue for high-volume outbound SMS to avoid rate limits. # PentaCodes Technical Reference and Integration Documentation # Version 1.0 | Last Updated March 2025 # This document contains technical reference material for common integrations and deployment procedures. ## QuickBooks Online Integration The QuickBooks Online API uses OAuth 2.0 for authentication. You will need to register your application in the Intuit Developer Portal to obtain client credentials. The base URL for the API is https://quickbooks.api.intuit.com/v3/company/{realmId}. Common endpoints include /invoice, /customer, /payment, and /bill. Rate limits apply: 500 requests per minute for production apps. Always implement exponential backoff for 429 responses. ## Stripe Payment Integration Stripe provides both client-side (Stripe.js) and server-side APIs. For PCI compliance, never pass raw card numbers through your server—use Stripe Elements or the Payment Intents API. Webhooks are essential for handling asynchronous events like payment succeeded or subscription renewed. Configure your webhook endpoint to verify signatures using the Stripe-Signature header. ## ShipStation Integration The ShipStation API is REST-based. Authentication uses API key and API secret in the Authorization header. Endpoints cover orders, shipments, carriers, and warehouses. Poll for new orders or use webhooks if available for your plan. Batch operations are supported for bulk label creation. ## Twilio SMS Integration Twilio's REST API requires Account SID and Auth Token. The Messaging API endpoint is /2010-04-01/Accounts/{AccountSid}/Messages.json. For two-way messaging, configure a webhook URL to receive incoming messages. Consider using a queue for high-volume outbound SMS to avoid rate limits. # PentaCodes Technical Reference and Integration Documentation # Version 1.0 | Last Updated March 2025 # This document contains technical reference material for common integrations and deployment procedures. ## QuickBooks Online Integration The QuickBooks Online API uses OAuth 2.0 for authentication. You will need to register your application in the Intuit Developer Portal to obtain client credentials. The base URL for the API is https://quickbooks.api.intuit.com/v3/company/{realmId}. Common endpoints include /invoice, /customer, /payment, and /bill. Rate limits apply: 500 requests per minute for production apps. Always implement exponential backoff for 429 responses. ## Stripe Payment Integration Stripe provides both client-side (Stripe.js) and server-side APIs. For PCI compliance, never pass raw card numbers through your server—use Stripe Elements or the Payment Intents API. Webhooks are essential for handling asynchronous events like payment succeeded or subscription renewed. Configure your webhook endpoint to verify signatures using the Stripe-Signature header. ## ShipStation Integration The ShipStation API is REST-based. Authentication uses API key and API secret in the Authorization header. Endpoints cover orders, shipments, carriers, and warehouses. Poll for new orders or use webhooks if available for your plan. Batch operations are supported for bulk label creation. ## Twilio SMS Integration Twilio's REST API requires Account SID and Auth Token. The Messaging API endpoint is /2010-04-01/Accounts/{AccountSid}/Messages.json. For two-way messaging, configure a webhook URL to receive incoming messages. Consider using a queue for high-volume outbound SMS to avoid rate limits. # PentaCodes Technical Reference and Integration Documentation # Version 1.0 | Last Updated March 2025 # This document contains technical reference material for common integrations and deployment procedures. ## QuickBooks Online Integration The QuickBooks Online API uses OAuth 2.0 for authentication. You will need to register your application in the Intuit Developer Portal to obtain client credentials. The base URL for the API is https://quickbooks.api.intuit.com/v3/company/{realmId}. Common endpoints include /invoice, /customer, /payment, and /bill. Rate limits apply: 500 requests per minute for production apps. Always implement exponential backoff for 429 responses. ## Stripe Payment Integration Stripe provides both client-side (Stripe.js) and server-side APIs. For PCI compliance, never pass raw card numbers through your server—use Stripe Elements or the Payment Intents API. Webhooks are essential for handling asynchronous events like payment succeeded or subscription renewed. Configure your webhook endpoint to verify signatures using the Stripe-Signature header. ## ShipStation Integration The ShipStation API is REST-based. Authentication uses API key and API secret in the Authorization header. Endpoints cover orders, shipments, carriers, and warehouses. Poll for new orders or use webhooks if available for your plan. Batch operations are supported for bulk label creation. ## Twilio SMS Integration Twilio's REST API requires Account SID and Auth Token. The Messaging API endpoint is /2010-04-01/Accounts/{AccountSid}/Messages.json. For two-way messaging, configure a webhook URL to receive incoming messages. Consider using a queue for high-volume outbound SMS to avoid rate limits. # PentaCodes Technical Reference and Integration Documentation # Version 1.0 | Last Updated March 2025 # This document contains technical reference material for common integrations and deployment procedures. ## QuickBooks Online Integration The QuickBooks Online API uses OAuth 2.0 for authentication. You will need to register your application in the Intuit Developer Portal to obtain client credentials. The base URL for the API is https://quickbooks.api.intuit.com/v3/company/{realmId}. Common endpoints include /invoice, /customer, /payment, and /bill. Rate limits apply: 500 requests per minute for production apps. Always implement exponential backoff for 429 responses. ## Stripe Payment Integration Stripe provides both client-side (Stripe.js) and server-side APIs. For PCI compliance, never pass raw card numbers through your server—use Stripe Elements or the Payment Intents API. Webhooks are essential for handling asynchronous events like payment succeeded or subscription renewed. Configure your webhook endpoint to verify signatures using the Stripe-Signature header. ## ShipStation Integration The ShipStation API is REST-based. Authentication uses API key and API secret in the Authorization header. Endpoints cover orders, shipments, carriers, and warehouses. Poll for new orders or use webhooks if available for your plan. Batch operations are supported for bulk label creation. ## Twilio SMS Integration Twilio's REST API requires Account SID and Auth Token. The Messaging API endpoint is /2010-04-01/Accounts/{AccountSid}/Messages.json. For two-way messaging, configure a webhook URL to receive incoming messages. Consider using a queue for high-volume outbound SMS to avoid rate limits. # PentaCodes Technical Reference and Integration Documentation # Version 1.0 | Last Updated March 2025 # This document contains technical reference material for common integrations and deployment procedures. ## QuickBooks Online Integration The QuickBooks Online API uses OAuth 2.0 for authentication. You will need to register your application in the Intuit Developer Portal to obtain client credentials. The base URL for the API is https://quickbooks.api.intuit.com/v3/company/{realmId}. Common endpoints include /invoice, /customer, /payment, and /bill. Rate limits apply: 500 requests per minute for production apps. Always implement exponential backoff for 429 responses. ## Stripe Payment Integration Stripe provides both client-side (Stripe.js) and server-side APIs. For PCI compliance, never pass raw card numbers through your server—use Stripe Elements or the Payment Intents API. Webhooks are essential for handling asynchronous events like payment succeeded or subscription renewed. Configure your webhook endpoint to verify signatures using the Stripe-Signature header. ## ShipStation Integration The ShipStation API is REST-based. Authentication uses API key and API secret in the Authorization header. Endpoints cover orders, shipments, carriers, and warehouses. Poll for new orders or use webhooks if available for your plan. Batch operations are supported for bulk label creation. ## Twilio SMS Integration Twilio's REST API requires Account SID and Auth Token. The Messaging API endpoint is /2010-04-01/Accounts/{AccountSid}/Messages.json. For two-way messaging, configure a webhook URL to receive incoming messages. Consider using a queue for high-volume outbound SMS to avoid rate limits. # PentaCodes Technical Reference and Integration Documentation # Version 1.0 | Last Updated March 2025 # This document contains technical reference material for common integrations and deployment procedures. ## QuickBooks Online Integration The QuickBooks Online API uses OAuth 2.0 for authentication. You will need to register your application in the Intuit Developer Portal to obtain client credentials. The base URL for the API is https://quickbooks.api.intuit.com/v3/company/{realmId}. Common endpoints include /invoice, /customer, /payment, and /bill. Rate limits apply: 500 requests per minute for production apps. Always implement exponential backoff for 429 responses. ## Stripe Payment Integration Stripe provides both client-side (Stripe.js) and server-side APIs. For PCI compliance, never pass raw card numbers through your server—use Stripe Elements or the Payment Intents API. Webhooks are essential for handling asynchronous events like payment succeeded or subscription renewed. Configure your webhook endpoint to verify signatures using the Stripe-Signature header. ## ShipStation Integration The ShipStation API is REST-based. Authentication uses API key and API secret in the Authorization header. Endpoints cover orders, shipments, carriers, and warehouses. Poll for new orders or use webhooks if available for your plan. Batch operations are supported for bulk label creation. ## Twilio SMS Integration Twilio's REST API requires Account SID and Auth Token. The Messaging API endpoint is /2010-04-01/Accounts/{AccountSid}/Messages.json. For two-way messaging, configure a webhook URL to receive incoming messages. Consider using a queue for high-volume outbound SMS to avoid rate limits. # PentaCodes Technical Reference and Integration Documentation # Version 1.0 | Last Updated March 2025 # This document contains technical reference material for common integrations and deployment procedures. ## QuickBooks Online Integration The QuickBooks Online API uses OAuth 2.0 for authentication. You will need to register your application in the Intuit Developer Portal to obtain client credentials. The base URL for the API is https://quickbooks.api.intuit.com/v3/company/{realmId}. Common endpoints include /invoice, /customer, /payment, and /bill. Rate limits apply: 500 requests per minute for production apps. Always implement exponential backoff for 429 responses. ## Stripe Payment Integration Stripe provides both client-side (Stripe.js) and server-side APIs. For PCI compliance, never pass raw card numbers through your server—use Stripe Elements or the Payment Intents API. Webhooks are essential for handling asynchronous events like payment succeeded or subscription renewed. Configure your webhook endpoint to verify signatures using the Stripe-Signature header. ## ShipStation Integration The ShipStation API is REST-based. Authentication uses API key and API secret in the Authorization header. Endpoints cover orders, shipments, carriers, and warehouses. Poll for new orders or use webhooks if available for your plan. Batch operations are supported for bulk label creation. ## Twilio SMS Integration Twilio's REST API requires Account SID and Auth Token. The Messaging API endpoint is /2010-04-01/Accounts/{AccountSid}/Messages.json. For two-way messaging, configure a webhook URL to receive incoming messages. Consider using a queue for high-volume outbound SMS to avoid rate limits. # PentaCodes Technical Reference and Integration Documentation # Version 1.0 | Last Updated March 2025 # This document contains technical reference material for common integrations and deployment procedures. ## QuickBooks Online Integration The QuickBooks Online API uses OAuth 2.0 for authentication. You will need to register your application in the Intuit Developer Portal to obtain client credentials. The base URL for the API is https://quickbooks.api.intuit.com/v3/company/{realmId}. Common endpoints include /invoice, /customer, /payment, and /bill. Rate limits apply: 500 requests per minute for production apps. Always implement exponential backoff for 429 responses. ## Stripe Payment Integration Stripe provides both client-side (Stripe.js) and server-side APIs. For PCI compliance, never pass raw card numbers through your server—use Stripe Elements or the Payment Intents API. Webhooks are essential for handling asynchronous events like payment succeeded or subscription renewed. Configure your webhook endpoint to verify signatures using the Stripe-Signature header. ## ShipStation Integration The ShipStation API is REST-based. Authentication uses API key and API secret in the Authorization header. Endpoints cover orders, shipments, carriers, and warehouses. Poll for new orders or use webhooks if available for your plan. Batch operations are supported for bulk label creation. ## Twilio SMS Integration Twilio's REST API requires Account SID and Auth Token. The Messaging API endpoint is /2010-04-01/Accounts/{AccountSid}/Messages.json. For two-way messaging, configure a webhook URL to receive incoming messages. Consider using a queue for high-volume outbound SMS to avoid rate limits. # PentaCodes Technical Reference and Integration Documentation # Version 1.0 | Last Updated March 2025 # This document contains technical reference material for common integrations and deployment procedures. ## QuickBooks Online Integration The QuickBooks Online API uses OAuth 2.0 for authentication. You will need to register your application in the Intuit Developer Portal to obtain client credentials. The base URL for the API is https://quickbooks.api.intuit.com/v3/company/{realmId}. Common endpoints include /invoice, /customer, /payment, and /bill. Rate limits apply: 500 requests per minute for production apps. Always implement exponential backoff for 429 responses. ## Stripe Payment Integration Stripe provides both client-side (Stripe.js) and server-side APIs. For PCI compliance, never pass raw card numbers through your server—use Stripe Elements or the Payment Intents API. Webhooks are essential for handling asynchronous events like payment succeeded or subscription renewed. Configure your webhook endpoint to verify signatures using the Stripe-Signature header. ## ShipStation Integration The ShipStation API is REST-based. Authentication uses API key and API secret in the Authorization header. Endpoints cover orders, shipments, carriers, and warehouses. Poll for new orders or use webhooks if available for your plan. Batch operations are supported for bulk label creation. ## Twilio SMS Integration Twilio's REST API requires Account SID and Auth Token. The Messaging API endpoint is /2010-04-01/Accounts/{AccountSid}/Messages.json. For two-way messaging, configure a webhook URL to receive incoming messages. Consider using a queue for high-volume outbound SMS to avoid rate limits. # PentaCodes Technical Reference and Integration Documentation # Version 1.0 | Last Updated March 2025 # This document contains technical reference material for common integrations and deployment procedures. ## QuickBooks Online Integration The QuickBooks Online API uses OAuth 2.0 for authentication. You will need to register your application in the Intuit Developer Portal to obtain client credentials. The base URL for the API is https://quickbooks.api.intuit.com/v3/company/{realmId}. Common endpoints include /invoice, /customer, /payment, and /bill. Rate limits apply: 500 requests per minute for production apps. Always implement exponential backoff for 429 responses. ## Stripe Payment Integration Stripe provides both client-side (Stripe.js) and server-side APIs. For PCI compliance, never pass raw card numbers through your server—use Stripe Elements or the Payment Intents API. Webhooks are essential for handling asynchronous events like payment succeeded or subscription renewed. Configure your webhook endpoint to verify signatures using the Stripe-Signature header. ## ShipStation Integration The ShipStation API is REST-based. Authentication uses API key and API secret in the Authorization header. Endpoints cover orders, shipments, carriers, and warehouses. Poll for new orders or use webhooks if available for your plan. Batch operations are supported for bulk label creation. ## Twilio SMS Integration Twilio's REST API requires Account SID and Auth Token. The Messaging API endpoint is /2010-04-01/Accounts/{AccountSid}/Messages.json. For two-way messaging, configure a webhook URL to receive incoming messages. Consider using a queue for high-volume outbound SMS to avoid rate limits. # PentaCodes Technical Reference and Integration Documentation # Version 1.0 | Last Updated March 2025 # This document contains technical reference material for common integrations and deployment procedures. ## QuickBooks Online Integration The QuickBooks Online API uses OAuth 2.0 for authentication. You will need to register your application in the Intuit Developer Portal to obtain client credentials. The base URL for the API is https://quickbooks.api.intuit.com/v3/company/{realmId}. Common endpoints include /invoice, /customer, /payment, and /bill. Rate limits apply: 500 requests per minute for production apps. Always implement exponential backoff for 429 responses. ## Stripe Payment Integration Stripe provides both client-side (Stripe.js) and server-side APIs. For PCI compliance, never pass raw card numbers through your server—use Stripe Elements or the Payment Intents API. Webhooks are essential for handling asynchronous events like payment succeeded or subscription renewed. Configure your webhook endpoint to verify signatures using the Stripe-Signature header. ## ShipStation Integration The ShipStation API is REST-based. Authentication uses API key and API secret in the Authorization header. Endpoints cover orders, shipments, carriers, and warehouses. Poll for new orders or use webhooks if available for your plan. Batch operations are supported for bulk label creation. ## Twilio SMS Integration Twilio's REST API requires Account SID and Auth Token. The Messaging API endpoint is /2010-04-01/Accounts/{AccountSid}/Messages.json. For two-way messaging, configure a webhook URL to receive incoming messages. Consider using a queue for high-volume outbound SMS to avoid rate limits. # PentaCodes Technical Reference and Integration Documentation # Version 1.0 | Last Updated March 2025 # This document contains technical reference material for common integrations and deployment procedures. ## QuickBooks Online Integration The QuickBooks Online API uses OAuth 2.0 for authentication. You will need to register your application in the Intuit Developer Portal to obtain client credentials. The base URL for the API is https://quickbooks.api.intuit.com/v3/company/{realmId}. Common endpoints include /invoice, /customer, /payment, and /bill. Rate limits apply: 500 requests per minute for production apps. Always implement exponential backoff for 429 responses. ## Stripe Payment Integration Stripe provides both client-side (Stripe.js) and server-side APIs. For PCI compliance, never pass raw card numbers through your server—use Stripe Elements or the Payment Intents API. Webhooks are essential for handling asynchronous events like payment succeeded or subscription renewed. Configure your webhook endpoint to verify signatures using the Stripe-Signature header. ## ShipStation Integration The ShipStation API is REST-based. Authentication uses API key and API secret in the Authorization header. Endpoints cover orders, shipments, carriers, and warehouses. Poll for new orders or use webhooks if available for your plan. Batch operations are supported for bulk label creation. ## Twilio SMS Integration Twilio's REST API requires Account SID and Auth Token. The Messaging API endpoint is /2010-04-01/Accounts/{AccountSid}/Messages.json. For two-way messaging, configure a webhook URL to receive incoming messages. Consider using a queue for high-volume outbound SMS to avoid rate limits. # PentaCodes Technical Reference and Integration Documentation # Version 1.0 | Last Updated March 2025 # This document contains technical reference material for common integrations and deployment procedures. ## QuickBooks Online Integration The QuickBooks Online API uses OAuth 2.0 for authentication. You will need to register your application in the Intuit Developer Portal to obtain client credentials. The base URL for the API is https://quickbooks.api.intuit.com/v3/company/{realmId}. Common endpoints include /invoice, /customer, /payment, and /bill. Rate limits apply: 500 requests per minute for production apps. Always implement exponential backoff for 429 responses. ## Stripe Payment Integration Stripe provides both client-side (Stripe.js) and server-side APIs. For PCI compliance, never pass raw card numbers through your server—use Stripe Elements or the Payment Intents API. Webhooks are essential for handling asynchronous events like payment succeeded or subscription renewed. Configure your webhook endpoint to verify signatures using the Stripe-Signature header. ## ShipStation Integration The ShipStation API is REST-based. Authentication uses API key and API secret in the Authorization header. Endpoints cover orders, shipments, carriers, and warehouses. Poll for new orders or use webhooks if available for your plan. Batch operations are supported for bulk label creation. ## Twilio SMS Integration Twilio's REST API requires Account SID and Auth Token. The Messaging API endpoint is /2010-04-01/Accounts/{AccountSid}/Messages.json. For two-way messaging, configure a webhook URL to receive incoming messages. Consider using a queue for high-volume outbound SMS to avoid rate limits. # PentaCodes Technical Reference and Integration Documentation # Version 1.0 | Last Updated March 2025 # This document contains technical reference material for common integrations and deployment procedures. ## QuickBooks Online Integration The QuickBooks Online API uses OAuth 2.0 for authentication. You will need to register your application in the Intuit Developer Portal to obtain client credentials. The base URL for the API is https://quickbooks.api.intuit.com/v3/company/{realmId}. Common endpoints include /invoice, /customer, /payment, and /bill. Rate limits apply: 500 requests per minute for production apps. Always implement exponential backoff for 429 responses. ## Stripe Payment Integration Stripe provides both client-side (Stripe.js) and server-side APIs. For PCI compliance, never pass raw card numbers through your server—use Stripe Elements or the Payment Intents API. Webhooks are essential for handling asynchronous events like payment succeeded or subscription renewed. Configure your webhook endpoint to verify signatures using the Stripe-Signature header. ## ShipStation Integration The ShipStation API is REST-based. Authentication uses API key and API secret in the Authorization header. Endpoints cover orders, shipments, carriers, and warehouses. Poll for new orders or use webhooks if available for your plan. Batch operations are supported for bulk label creation. ## Twilio SMS Integration Twilio's REST API requires Account SID and Auth Token. The Messaging API endpoint is /2010-04-01/Accounts/{AccountSid}/Messages.json. For two-way messaging, configure a webhook URL to receive incoming messages. Consider using a queue for high-volume outbound SMS to avoid rate limits. # PentaCodes Technical Reference and Integration Documentation # Version 1.0 | Last Updated March 2025 # This document contains technical reference material for common integrations and deployment procedures. ## QuickBooks Online Integration The QuickBooks Online API uses OAuth 2.0 for authentication. You will need to register your application in the Intuit Developer Portal to obtain client credentials. The base URL for the API is https://quickbooks.api.intuit.com/v3/company/{realmId}. Common endpoints include /invoice, /customer, /payment, and /bill. Rate limits apply: 500 requests per minute for production apps. Always implement exponential backoff for 429 responses. ## Stripe Payment Integration Stripe provides both client-side (Stripe.js) and server-side APIs. For PCI compliance, never pass raw card numbers through your server—use Stripe Elements or the Payment Intents API. Webhooks are essential for handling asynchronous events like payment succeeded or subscription renewed. Configure your webhook endpoint to verify signatures using the Stripe-Signature header. ## ShipStation Integration The ShipStation API is REST-based. Authentication uses API key and API secret in the Authorization header. Endpoints cover orders, shipments, carriers, and warehouses. Poll for new orders or use webhooks if available for your plan. Batch operations are supported for bulk label creation. ## Twilio SMS Integration Twilio's REST API requires Account SID and Auth Token. The Messaging API endpoint is /2010-04-01/Accounts/{AccountSid}/Messages.json. For two-way messaging, configure a webhook URL to receive incoming messages. Consider using a queue for high-volume outbound SMS to avoid rate limits. # PentaCodes Technical Reference and Integration Documentation # Version 1.0 | Last Updated March 2025 # This document contains technical reference material for common integrations and deployment procedures. ## QuickBooks Online Integration The QuickBooks Online API uses OAuth 2.0 for authentication. You will need to register your application in the Intuit Developer Portal to obtain client credentials. The base URL for the API is https://quickbooks.api.intuit.com/v3/company/{realmId}. Common endpoints include /invoice, /customer, /payment, and /bill. Rate limits apply: 500 requests per minute for production apps. Always implement exponential backoff for 429 responses. ## Stripe Payment Integration Stripe provides both client-side (Stripe.js) and server-side APIs. For PCI compliance, never pass raw card numbers through your server—use Stripe Elements or the Payment Intents API. Webhooks are essential for handling asynchronous events like payment succeeded or subscription renewed. Configure your webhook endpoint to verify signatures using the Stripe-Signature header. ## ShipStation Integration The ShipStation API is REST-based. Authentication uses API key and API secret in the Authorization header. Endpoints cover orders, shipments, carriers, and warehouses. Poll for new orders or use webhooks if available for your plan. Batch operations are supported for bulk label creation. ## Twilio SMS Integration Twilio's REST API requires Account SID and Auth Token. The Messaging API endpoint is /2010-04-01/Accounts/{AccountSid}/Messages.json. For two-way messaging, configure a webhook URL to receive incoming messages. Consider using a queue for high-volume outbound SMS to avoid rate limits. # PentaCodes Technical Reference and Integration Documentation # Version 1.0 | Last Updated March 2025 # This document contains technical reference material for common integrations and deployment procedures. ## QuickBooks Online Integration The QuickBooks Online API uses OAuth 2.0 for authentication. You will need to register your application in the Intuit Developer Portal to obtain client credentials. The base URL for the API is https://quickbooks.api.intuit.com/v3/company/{realmId}. Common endpoints include /invoice, /customer, /payment, and /bill. Rate limits apply: 500 requests per minute for production apps. Always implement exponential backoff for 429 responses. ## Stripe Payment Integration Stripe provides both client-side (Stripe.js) and server-side APIs. For PCI compliance, never pass raw card numbers through your server—use Stripe Elements or the Payment Intents API. Webhooks are essential for handling asynchronous events like payment succeeded or subscription renewed. Configure your webhook endpoint to verify signatures using the Stripe-Signature header. ## ShipStation Integration The ShipStation API is REST-based. Authentication uses API key and API secret in the Authorization header. Endpoints cover orders, shipments, carriers, and warehouses. Poll for new orders or use webhooks if available for your plan. Batch operations are supported for bulk label creation. ## Twilio SMS Integration Twilio's REST API requires Account SID and Auth Token. The Messaging API endpoint is /2010-04-01/Accounts/{AccountSid}/Messages.json. For two-way messaging, configure a webhook URL to receive incoming messages. Consider using a queue for high-volume outbound SMS to avoid rate limits. # PentaCodes Technical Reference and Integration Documentation # Version 1.0 | Last Updated March 2025 # This document contains technical reference material for common integrations and deployment procedures. ## QuickBooks Online Integration The QuickBooks Online API uses OAuth 2.0 for authentication. You will need to register your application in the Intuit Developer Portal to obtain client credentials. The base URL for the API is https://quickbooks.api.intuit.com/v3/company/{realmId}. Common endpoints include /invoice, /customer, /payment, and /bill. Rate limits apply: 500 requests per minute for production apps. Always implement exponential backoff for 429 responses. ## Stripe Payment Integration Stripe provides both client-side (Stripe.js) and server-side APIs. For PCI compliance, never pass raw card numbers through your server—use Stripe Elements or the Payment Intents API. Webhooks are essential for handling asynchronous events like payment succeeded or subscription renewed. Configure your webhook endpoint to verify signatures using the Stripe-Signature header. ## ShipStation Integration The ShipStation API is REST-based. Authentication uses API key and API secret in the Authorization header. Endpoints cover orders, shipments, carriers, and warehouses. Poll for new orders or use webhooks if available for your plan. Batch operations are supported for bulk label creation. ## Twilio SMS Integration Twilio's REST API requires Account SID and Auth Token. The Messaging API endpoint is /2010-04-01/Accounts/{AccountSid}/Messages.json. For two-way messaging, configure a webhook URL to receive incoming messages. Consider using a queue for high-volume outbound SMS to avoid rate limits. # PentaCodes Technical Reference and Integration Documentation # Version 1.0 | Last Updated March 2025 # This document contains technical reference material for common integrations and deployment procedures. ## QuickBooks Online Integration The QuickBooks Online API uses OAuth 2.0 for authentication. You will need to register your application in the Intuit Developer Portal to obtain client credentials. The base URL for the API is https://quickbooks.api.intuit.com/v3/company/{realmId}. Common endpoints include /invoice, /customer, /payment, and /bill. Rate limits apply: 500 requests per minute for production apps. Always implement exponential backoff for 429 responses. ## Stripe Payment Integration Stripe provides both client-side (Stripe.js) and server-side APIs. For PCI compliance, never pass raw card numbers through your server—use Stripe Elements or the Payment Intents API. Webhooks are essential for handling asynchronous events like payment succeeded or subscription renewed. Configure your webhook endpoint to verify signatures using the Stripe-Signature header. ## ShipStation Integration The ShipStation API is REST-based. Authentication uses API key and API secret in the Authorization header. Endpoints cover orders, shipments, carriers, and warehouses. Poll for new orders or use webhooks if available for your plan. Batch operations are supported for bulk label creation. ## Twilio SMS Integration Twilio's REST API requires Account SID and Auth Token. The Messaging API endpoint is /2010-04-01/Accounts/{AccountSid}/Messages.json. For two-way messaging, configure a webhook URL to receive incoming messages. Consider using a queue for high-volume outbound SMS to avoid rate limits. # PentaCodes Technical Reference and Integration Documentation # Version 1.0 | Last Updated March 2025 # This document contains technical reference material for common integrations and deployment procedures. ## QuickBooks Online Integration The QuickBooks Online API uses OAuth 2.0 for authentication. You will need to register your application in the Intuit Developer Portal to obtain client credentials. The base URL for the API is https://quickbooks.api.intuit.com/v3/company/{realmId}. Common endpoints include /invoice, /customer, /payment, and /bill. Rate limits apply: 500 requests per minute for production apps. Always implement exponential backoff for 429 responses. ## Stripe Payment Integration Stripe provides both client-side (Stripe.js) and server-side APIs. For PCI compliance, never pass raw card numbers through your server—use Stripe Elements or the Payment Intents API. Webhooks are essential for handling asynchronous events like payment succeeded or subscription renewed. Configure your webhook endpoint to verify signatures using the Stripe-Signature header. ## ShipStation Integration The ShipStation API is REST-based. Authentication uses API key and API secret in the Authorization header. Endpoints cover orders, shipments, carriers, and warehouses. Poll for new orders or use webhooks if available for your plan. Batch operations are supported for bulk label creation. ## Twilio SMS Integration Twilio's REST API requires Account SID and Auth Token. The Messaging API endpoint is /2010-04-01/Accounts/{AccountSid}/Messages.json. For two-way messaging, configure a webhook URL to receive incoming messages. Consider using a queue for high-volume outbound SMS to avoid rate limits. # PentaCodes Technical Reference and Integration Documentation # Version 1.0 | Last Updated March 2025 # This document contains technical reference material for common integrations and deployment procedures. ## QuickBooks Online Integration The QuickBooks Online API uses OAuth 2.0 for authentication. You will need to register your application in the Intuit Developer Portal to obtain client credentials. The base URL for the API is https://quickbooks.api.intuit.com/v3/company/{realmId}. Common endpoints include /invoice, /customer, /payment, and /bill. Rate limits apply: 500 requests per minute for production apps. Always implement exponential backoff for 429 responses. ## Stripe Payment Integration Stripe provides both client-side (Stripe.js) and server-side APIs. For PCI compliance, never pass raw card numbers through your server—use Stripe Elements or the Payment Intents API. Webhooks are essential for handling asynchronous events like payment succeeded or subscription renewed. Configure your webhook endpoint to verify signatures using the Stripe-Signature header. ## ShipStation Integration The ShipStation API is REST-based. Authentication uses API key and API secret in the Authorization header. Endpoints cover orders, shipments, carriers, and warehouses. Poll for new orders or use webhooks if available for your plan. Batch operations are supported for bulk label creation. ## Twilio SMS Integration Twilio's REST API requires Account SID and Auth Token. The Messaging API endpoint is /2010-04-01/Accounts/{AccountSid}/Messages.json. For two-way messaging, configure a webhook URL to receive incoming messages. Consider using a queue for high-volume outbound SMS to avoid rate limits. # PentaCodes Technical Reference and Integration Documentation # Version 1.0 | Last Updated March 2025 # This document contains technical reference material for common integrations and deployment procedures. ## QuickBooks Online Integration The QuickBooks Online API uses OAuth 2.0 for authentication. You will need to register your application in the Intuit Developer Portal to obtain client credentials. The base URL for the API is https://quickbooks.api.intuit.com/v3/company/{realmId}. Common endpoints include /invoice, /customer, /payment, and /bill. Rate limits apply: 500 requests per minute for production apps. Always implement exponential backoff for 429 responses. ## Stripe Payment Integration Stripe provides both client-side (Stripe.js) and server-side APIs. For PCI compliance, never pass raw card numbers through your server—use Stripe Elements or the Payment Intents API. Webhooks are essential for handling asynchronous events like payment succeeded or subscription renewed. Configure your webhook endpoint to verify signatures using the Stripe-Signature header. ## ShipStation Integration The ShipStation API is REST-based. Authentication uses API key and API secret in the Authorization header. Endpoints cover orders, shipments, carriers, and warehouses. Poll for new orders or use webhooks if available for your plan. Batch operations are supported for bulk label creation. ## Twilio SMS Integration Twilio's REST API requires Account SID and Auth Token. The Messaging API endpoint is /2010-04-01/Accounts/{AccountSid}/Messages.json. For two-way messaging, configure a webhook URL to receive incoming messages. Consider using a queue for high-volume outbound SMS to avoid rate limits. # PentaCodes Technical Reference and Integration Documentation # Version 1.0 | Last Updated March 2025 # This document contains technical reference material for common integrations and deployment procedures. ## QuickBooks Online Integration The QuickBooks Online API uses OAuth 2.0 for authentication. You will need to register your application in the Intuit Developer Portal to obtain client credentials. The base URL for the API is https://quickbooks.api.intuit.com/v3/company/{realmId}. Common endpoints include /invoice, /customer, /payment, and /bill. Rate limits apply: 500 requests per minute for production apps. Always implement exponential backoff for 429 responses. ## Stripe Payment Integration Stripe provides both client-side (Stripe.js) and server-side APIs. For PCI compliance, never pass raw card numbers through your server—use Stripe Elements or the Payment Intents API. Webhooks are essential for handling asynchronous events like payment succeeded or subscription renewed. Configure your webhook endpoint to verify signatures using the Stripe-Signature header. ## ShipStation Integration The ShipStation API is REST-based. Authentication uses API key and API secret in the Authorization header. Endpoints cover orders, shipments, carriers, and warehouses. Poll for new orders or use webhooks if available for your plan. Batch operations are supported for bulk label creation. ## Twilio SMS Integration Twilio's REST API requires Account SID and Auth Token. The Messaging API endpoint is /2010-04-01/Accounts/{AccountSid}/Messages.json. For two-way messaging, configure a webhook URL to receive incoming messages. Consider using a queue for high-volume outbound SMS to avoid rate limits. # PentaCodes Technical Reference and Integration Documentation # Version 1.0 | Last Updated March 2025 # This document contains technical reference material for common integrations and deployment procedures. ## QuickBooks Online Integration The QuickBooks Online API uses OAuth 2.0 for authentication. You will need to register your application in the Intuit Developer Portal to obtain client credentials. The base URL for the API is https://quickbooks.api.intuit.com/v3/company/{realmId}. Common endpoints include /invoice, /customer, /payment, and /bill. Rate limits apply: 500 requests per minute for production apps. Always implement exponential backoff for 429 responses. ## Stripe Payment Integration Stripe provides both client-side (Stripe.js) and server-side APIs. For PCI compliance, never pass raw card numbers through your server—use Stripe Elements or the Payment Intents API. Webhooks are essential for handling asynchronous events like payment succeeded or subscription renewed. Configure your webhook endpoint to verify signatures using the Stripe-Signature header. ## ShipStation Integration The ShipStation API is REST-based. Authentication uses API key and API secret in the Authorization header. Endpoints cover orders, shipments, carriers, and warehouses. Poll for new orders or use webhooks if available for your plan. Batch operations are supported for bulk label creation. ## Twilio SMS Integration Twilio's REST API requires Account SID and Auth Token. The Messaging API endpoint is /2010-04-01/Accounts/{AccountSid}/Messages.json. For two-way messaging, configure a webhook URL to receive incoming messages. Consider using a queue for high-volume outbound SMS to avoid rate limits. # PentaCodes Technical Reference and Integration Documentation # Version 1.0 | Last Updated March 2025 # This document contains technical reference material for common integrations and deployment procedures. ## QuickBooks Online Integration The QuickBooks Online API uses OAuth 2.0 for authentication. You will need to register your application in the Intuit Developer Portal to obtain client credentials. The base URL for the API is https://quickbooks.api.intuit.com/v3/company/{realmId}. Common endpoints include /invoice, /customer, /payment, and /bill. Rate limits apply: 500 requests per minute for production apps. Always implement exponential backoff for 429 responses. ## Stripe Payment Integration Stripe provides both client-side (Stripe.js) and server-side APIs. For PCI compliance, never pass raw card numbers through your server—use Stripe Elements or the Payment Intents API. Webhooks are essential for handling asynchronous events like payment succeeded or subscription renewed. Configure your webhook endpoint to verify signatures using the Stripe-Signature header. ## ShipStation Integration The ShipStation API is REST-based. Authentication uses API key and API secret in the Authorization header. Endpoints cover orders, shipments, carriers, and warehouses. Poll for new orders or use webhooks if available for your plan. Batch operations are supported for bulk label creation. ## Twilio SMS Integration Twilio's REST API requires Account SID and Auth Token. The Messaging API endpoint is /2010-04-01/Accounts/{AccountSid}/Messages.json. For two-way messaging, configure a webhook URL to receive incoming messages. Consider using a queue for high-volume outbound SMS to avoid rate limits. # PentaCodes Technical Reference and Integration Documentation # Version 1.0 | Last Updated March 2025 # This document contains technical reference material for common integrations and deployment procedures. ## QuickBooks Online Integration The QuickBooks Online API uses OAuth 2.0 for authentication. You will need to register your application in the Intuit Developer Portal to obtain client credentials. The base URL for the API is https://quickbooks.api.intuit.com/v3/company/{realmId}. Common endpoints include /invoice, /customer, /payment, and /bill. Rate limits apply: 500 requests per minute for production apps. Always implement exponential backoff for 429 responses. ## Stripe Payment Integration Stripe provides both client-side (Stripe.js) and server-side APIs. For PCI compliance, never pass raw card numbers through your server—use Stripe Elements or the Payment Intents API. Webhooks are essential for handling asynchronous events like payment succeeded or subscription renewed. Configure your webhook endpoint to verify signatures using the Stripe-Signature header. ## ShipStation Integration The ShipStation API is REST-based. Authentication uses API key and API secret in the Authorization header. Endpoints cover orders, shipments, carriers, and warehouses. Poll for new orders or use webhooks if available for your plan. Batch operations are supported for bulk label creation. ## Twilio SMS Integration Twilio's REST API requires Account SID and Auth Token. The Messaging API endpoint is /2010-04-01/Accounts/{AccountSid}/Messages.json. For two-way messaging, configure a webhook URL to receive incoming messages. Consider using a queue for high-volume outbound SMS to avoid rate limits. # PentaCodes Technical Reference and Integration Documentation # Version 1.0 | Last Updated March 2025 # This document contains technical reference material for common integrations and deployment procedures. ## QuickBooks Online Integration The QuickBooks Online API uses OAuth 2.0 for authentication. You will need to register your application in the Intuit Developer Portal to obtain client credentials. The base URL for the API is https://quickbooks.api.intuit.com/v3/company/{realmId}. Common endpoints include /invoice, /customer, /payment, and /bill. Rate limits apply: 500 requests per minute for production apps. Always implement exponential backoff for 429 responses. ## Stripe Payment Integration Stripe provides both client-side (Stripe.js) and server-side APIs. For PCI compliance, never pass raw card numbers through your server—use Stripe Elements or the Payment Intents API. Webhooks are essential for handling asynchronous events like payment succeeded or subscription renewed. Configure your webhook endpoint to verify signatures using the Stripe-Signature header. ## ShipStation Integration The ShipStation API is REST-based. Authentication uses API key and API secret in the Authorization header. Endpoints cover orders, shipments, carriers, and warehouses. Poll for new orders or use webhooks if available for your plan. Batch operations are supported for bulk label creation. ## Twilio SMS Integration Twilio's REST API requires Account SID and Auth Token. The Messaging API endpoint is /2010-04-01/Accounts/{AccountSid}/Messages.json. For two-way messaging, configure a webhook URL to receive incoming messages. Consider using a queue for high-volume outbound SMS to avoid rate limits. # PentaCodes Technical Reference and Integration Documentation # Version 1.0 | Last Updated March 2025 # This document contains technical reference material for common integrations and deployment procedures. ## QuickBooks Online Integration The QuickBooks Online API uses OAuth 2.0 for authentication. You will need to register your application in the Intuit Developer Portal to obtain client credentials. The base URL for the API is https://quickbooks.api.intuit.com/v3/company/{realmId}. Common endpoints include /invoice, /customer, /payment, and /bill. Rate limits apply: 500 requests per minute for production apps. Always implement exponential backoff for 429 responses. ## Stripe Payment Integration Stripe provides both client-side (Stripe.js) and server-side APIs. For PCI compliance, never pass raw card numbers through your server—use Stripe Elements or the Payment Intents API. Webhooks are essential for handling asynchronous events like payment succeeded or subscription renewed. Configure your webhook endpoint to verify signatures using the Stripe-Signature header. ## ShipStation Integration The ShipStation API is REST-based. Authentication uses API key and API secret in the Authorization header. Endpoints cover orders, shipments, carriers, and warehouses. Poll for new orders or use webhooks if available for your plan. Batch operations are supported for bulk label creation. ## Twilio SMS Integration Twilio's REST API requires Account SID and Auth Token. The Messaging API endpoint is /2010-04-01/Accounts/{AccountSid}/Messages.json. For two-way messaging, configure a webhook URL to receive incoming messages. Consider using a queue for high-volume outbound SMS to avoid rate limits. # PentaCodes Technical Reference and Integration Documentation # Version 1.0 | Last Updated March 2025 # This document contains technical reference material for common integrations and deployment procedures. ## QuickBooks Online Integration The QuickBooks Online API uses OAuth 2.0 for authentication. You will need to register your application in the Intuit Developer Portal to obtain client credentials. The base URL for the API is https://quickbooks.api.intuit.com/v3/company/{realmId}. Common endpoints include /invoice, /customer, /payment, and /bill. Rate limits apply: 500 requests per minute for production apps. Always implement exponential backoff for 429 responses. ## Stripe Payment Integration Stripe provides both client-side (Stripe.js) and server-side APIs. For PCI compliance, never pass raw card numbers through your server—use Stripe Elements or the Payment Intents API. Webhooks are essential for handling asynchronous events like payment succeeded or subscription renewed. Configure your webhook endpoint to verify signatures using the Stripe-Signature header. ## ShipStation Integration The ShipStation API is REST-based. Authentication uses API key and API secret in the Authorization header. Endpoints cover orders, shipments, carriers, and warehouses. Poll for new orders or use webhooks if available for your plan. Batch operations are supported for bulk label creation. ## Twilio SMS Integration Twilio's REST API requires Account SID and Auth Token. The Messaging API endpoint is /2010-04-01/Accounts/{AccountSid}/Messages.json. For two-way messaging, configure a webhook URL to receive incoming messages. Consider using a queue for high-volume outbound SMS to avoid rate limits. # PentaCodes Technical Reference and Integration Documentation # Version 1.0 | Last Updated March 2025 # This document contains technical reference material for common integrations and deployment procedures. ## QuickBooks Online Integration The QuickBooks Online API uses OAuth 2.0 for authentication. You will need to register your application in the Intuit Developer Portal to obtain client credentials. The base URL for the API is https://quickbooks.api.intuit.com/v3/company/{realmId}. Common endpoints include /invoice, /customer, /payment, and /bill. Rate limits apply: 500 requests per minute for production apps. Always implement exponential backoff for 429 responses. ## Stripe Payment Integration Stripe provides both client-side (Stripe.js) and server-side APIs. For PCI compliance, never pass raw card numbers through your server—use Stripe Elements or the Payment Intents API. Webhooks are essential for handling asynchronous events like payment succeeded or subscription renewed. Configure your webhook endpoint to verify signatures using the Stripe-Signature header. ## ShipStation Integration The ShipStation API is REST-based. Authentication uses API key and API secret in the Authorization header. Endpoints cover orders, shipments, carriers, and warehouses. Poll for new orders or use webhooks if available for your plan. Batch operations are supported for bulk label creation. ## Twilio SMS Integration Twilio's REST API requires Account SID and Auth Token. The Messaging API endpoint is /2010-04-01/Accounts/{AccountSid}/Messages.json. For two-way messaging, configure a webhook URL to receive incoming messages. Consider using a queue for high-volume outbound SMS to avoid rate limits. # PentaCodes Technical Reference and Integration Documentation # Version 1.0 | Last Updated March 2025 # This document contains technical reference material for common integrations and deployment procedures. ## QuickBooks Online Integration The QuickBooks Online API uses OAuth 2.0 for authentication. You will need to register your application in the Intuit Developer Portal to obtain client credentials. The base URL for the API is https://quickbooks.api.intuit.com/v3/company/{realmId}. Common endpoints include /invoice, /customer, /payment, and /bill. Rate limits apply: 500 requests per minute for production apps. Always implement exponential backoff for 429 responses. ## Stripe Payment Integration Stripe provides both client-side (Stripe.js) and server-side APIs. For PCI compliance, never pass raw card numbers through your server—use Stripe Elements or the Payment Intents API. Webhooks are essential for handling asynchronous events like payment succeeded or subscription renewed. Configure your webhook endpoint to verify signatures using the Stripe-Signature header. ## ShipStation Integration The ShipStation API is REST-based. Authentication uses API key and API secret in the Authorization header. Endpoints cover orders, shipments, carriers, and warehouses. Poll for new orders or use webhooks if available for your plan. Batch operations are supported for bulk label creation. ## Twilio SMS Integration Twilio's REST API requires Account SID and Auth Token. The Messaging API endpoint is /2010-04-01/Accounts/{AccountSid}/Messages.json. For two-way messaging, configure a webhook URL to receive incoming messages. Consider using a queue for high-volume outbound SMS to avoid rate limits. # PentaCodes Technical Reference and Integration Documentation # Version 1.0 | Last Updated March 2025 # This document contains technical reference material for common integrations and deployment procedures. ## QuickBooks Online Integration The QuickBooks Online API uses OAuth 2.0 for authentication. You will need to register your application in the Intuit Developer Portal to obtain client credentials. The base URL for the API is https://quickbooks.api.intuit.com/v3/company/{realmId}. Common endpoints include /invoice, /customer, /payment, and /bill. Rate limits apply: 500 requests per minute for production apps. Always implement exponential backoff for 429 responses. ## Stripe Payment Integration Stripe provides both client-side (Stripe.js) and server-side APIs. For PCI compliance, never pass raw card numbers through your server—use Stripe Elements or the Payment Intents API. Webhooks are essential for handling asynchronous events like payment succeeded or subscription renewed. Configure your webhook endpoint to verify signatures using the Stripe-Signature header. ## ShipStation Integration The ShipStation API is REST-based. Authentication uses API key and API secret in the Authorization header. Endpoints cover orders, shipments, carriers, and warehouses. Poll for new orders or use webhooks if available for your plan. Batch operations are supported for bulk label creation. ## Twilio SMS Integration Twilio's REST API requires Account SID and Auth Token. The Messaging API endpoint is /2010-04-01/Accounts/{AccountSid}/Messages.json. For two-way messaging, configure a webhook URL to receive incoming messages. Consider using a queue for high-volume outbound SMS to avoid rate limits. # PentaCodes Technical Reference and Integration Documentation # Version 1.0 | Last Updated March 2025 # This document contains technical reference material for common integrations and deployment procedures. ## QuickBooks Online Integration The QuickBooks Online API uses OAuth 2.0 for authentication. You will need to register your application in the Intuit Developer Portal to obtain client credentials. The base URL for the API is https://quickbooks.api.intuit.com/v3/company/{realmId}. Common endpoints include /invoice, /customer, /payment, and /bill. Rate limits apply: 500 requests per minute for production apps. Always implement exponential backoff for 429 responses. ## Stripe Payment Integration Stripe provides both client-side (Stripe.js) and server-side APIs. For PCI compliance, never pass raw card numbers through your server—use Stripe Elements or the Payment Intents API. Webhooks are essential for handling asynchronous events like payment succeeded or subscription renewed. Configure your webhook endpoint to verify signatures using the Stripe-Signature header. ## ShipStation Integration The ShipStation API is REST-based. Authentication uses API key and API secret in the Authorization header. Endpoints cover orders, shipments, carriers, and warehouses. Poll for new orders or use webhooks if available for your plan. Batch operations are supported for bulk label creation. ## Twilio SMS Integration Twilio's REST API requires Account SID and Auth Token. The Messaging API endpoint is /2010-04-01/Accounts/{AccountSid}/Messages.json. For two-way messaging, configure a webhook URL to receive incoming messages. Consider using a queue for high-volume outbound SMS to avoid rate limits. # PentaCodes Technical Reference and Integration Documentation # Version 1.0 | Last Updated March 2025 # This document contains technical reference material for common integrations and deployment procedures. ## QuickBooks Online Integration The QuickBooks Online API uses OAuth 2.0 for authentication. You will need to register your application in the Intuit Developer Portal to obtain client credentials. The base URL for the API is https://quickbooks.api.intuit.com/v3/company/{realmId}. Common endpoints include /invoice, /customer, /payment, and /bill. Rate limits apply: 500 requests per minute for production apps. Always implement exponential backoff for 429 responses. ## Stripe Payment Integration Stripe provides both client-side (Stripe.js) and server-side APIs. For PCI compliance, never pass raw card numbers through your server—use Stripe Elements or the Payment Intents API. Webhooks are essential for handling asynchronous events like payment succeeded or subscription renewed. Configure your webhook endpoint to verify signatures using the Stripe-Signature header. ## ShipStation Integration The ShipStation API is REST-based. Authentication uses API key and API secret in the Authorization header. Endpoints cover orders, shipments, carriers, and warehouses. Poll for new orders or use webhooks if available for your plan. Batch operations are supported for bulk label creation. ## Twilio SMS Integration Twilio's REST API requires Account SID and Auth Token. The Messaging API endpoint is /2010-04-01/Accounts/{AccountSid}/Messages.json. For two-way messaging, configure a webhook URL to receive incoming messages. Consider using a queue for high-volume outbound SMS to avoid rate limits. # PentaCodes Technical Reference and Integration Documentation # Version 1.0 | Last Updated March 2025 # This document contains technical reference material for common integrations and deployment procedures. ## QuickBooks Online Integration The QuickBooks Online API uses OAuth 2.0 for authentication. You will need to register your application in the Intuit Developer Portal to obtain client credentials. The base URL for the API is https://quickbooks.api.intuit.com/v3/company/{realmId}. Common endpoints include /invoice, /customer, /payment, and /bill. Rate limits apply: 500 requests per minute for production apps. Always implement exponential backoff for 429 responses. ## Stripe Payment Integration Stripe provides both client-side (Stripe.js) and server-side APIs. For PCI compliance, never pass raw card numbers through your server—use Stripe Elements or the Payment Intents API. Webhooks are essential for handling asynchronous events like payment succeeded or subscription renewed. Configure your webhook endpoint to verify signatures using the Stripe-Signature header. ## ShipStation Integration The ShipStation API is REST-based. Authentication uses API key and API secret in the Authorization header. Endpoints cover orders, shipments, carriers, and warehouses. Poll for new orders or use webhooks if available for your plan. Batch operations are supported for bulk label creation. ## Twilio SMS Integration Twilio's REST API requires Account SID and Auth Token. The Messaging API endpoint is /2010-04-01/Accounts/{AccountSid}/Messages.json. For two-way messaging, configure a webhook URL to receive incoming messages. Consider using a queue for high-volume outbound SMS to avoid rate limits. # PentaCodes Technical Reference and Integration Documentation # Version 1.0 | Last Updated March 2025 # This document contains technical reference material for common integrations and deployment procedures. ## QuickBooks Online Integration The QuickBooks Online API uses OAuth 2.0 for authentication. You will need to register your application in the Intuit Developer Portal to obtain client credentials. The base URL for the API is https://quickbooks.api.intuit.com/v3/company/{realmId}. Common endpoints include /invoice, /customer, /payment, and /bill. Rate limits apply: 500 requests per minute for production apps. Always implement exponential backoff for 429 responses. ## Stripe Payment Integration Stripe provides both client-side (Stripe.js) and server-side APIs. For PCI compliance, never pass raw card numbers through your server—use Stripe Elements or the Payment Intents API. Webhooks are essential for handling asynchronous events like payment succeeded or subscription renewed. Configure your webhook endpoint to verify signatures using the Stripe-Signature header. ## ShipStation Integration The ShipStation API is REST-based. Authentication uses API key and API secret in the Authorization header. Endpoints cover orders, shipments, carriers, and warehouses. Poll for new orders or use webhooks if available for your plan. Batch operations are supported for bulk label creation. ## Twilio SMS Integration Twilio's REST API requires Account SID and Auth Token. The Messaging API endpoint is /2010-04-01/Accounts/{AccountSid}/Messages.json. For two-way messaging, configure a webhook URL to receive incoming messages. Consider using a queue for high-volume outbound SMS to avoid rate limits. # PentaCodes Technical Reference and Integration Documentation # Version 1.0 | Last Updated March 2025 # This document contains technical reference material for common integrations and deployment procedures. ## QuickBooks Online Integration The QuickBooks Online API uses OAuth 2.0 for authentication. You will need to register your application in the Intuit Developer Portal to obtain client credentials. The base URL for the API is https://quickbooks.api.intuit.com/v3/company/{realmId}. Common endpoints include /invoice, /customer, /payment, and /bill. Rate limits apply: 500 requests per minute for production apps. Always implement exponential backoff for 429 responses. ## Stripe Payment Integration Stripe provides both client-side (Stripe.js) and server-side APIs. For PCI compliance, never pass raw card numbers through your server—use Stripe Elements or the Payment Intents API. Webhooks are essential for handling asynchronous events like payment succeeded or subscription renewed. Configure your webhook endpoint to verify signatures using the Stripe-Signature header. ## ShipStation Integration The ShipStation API is REST-based. Authentication uses API key and API secret in the Authorization header. Endpoints cover orders, shipments, carriers, and warehouses. Poll for new orders or use webhooks if available for your plan. Batch operations are supported for bulk label creation. ## Twilio SMS Integration Twilio's REST API requires Account SID and Auth Token. The Messaging API endpoint is /2010-04-01/Accounts/{AccountSid}/Messages.json. For two-way messaging, configure a webhook URL to receive incoming messages. Consider using a queue for high-volume outbound SMS to avoid rate limits. # PentaCodes Technical Reference and Integration Documentation # Version 1.0 | Last Updated March 2025 # This document contains technical reference material for common integrations and deployment procedures. ## QuickBooks Online Integration The QuickBooks Online API uses OAuth 2.0 for authentication. You will need to register your application in the Intuit Developer Portal to obtain client credentials. The base URL for the API is https://quickbooks.api.intuit.com/v3/company/{realmId}. Common endpoints include /invoice, /customer, /payment, and /bill. Rate limits apply: 500 requests per minute for production apps. Always implement exponential backoff for 429 responses. ## Stripe Payment Integration Stripe provides both client-side (Stripe.js) and server-side APIs. For PCI compliance, never pass raw card numbers through your server—use Stripe Elements or the Payment Intents API. Webhooks are essential for handling asynchronous events like payment succeeded or subscription renewed. Configure your webhook endpoint to verify signatures using the Stripe-Signature header. ## ShipStation Integration The ShipStation API is REST-based. Authentication uses API key and API secret in the Authorization header. Endpoints cover orders, shipments, carriers, and warehouses. Poll for new orders or use webhooks if available for your plan. Batch operations are supported for bulk label creation. ## Twilio SMS Integration Twilio's REST API requires Account SID and Auth Token. The Messaging API endpoint is /2010-04-01/Accounts/{AccountSid}/Messages.json. For two-way messaging, configure a webhook URL to receive incoming messages. Consider using a queue for high-volume outbound SMS to avoid rate limits. # PentaCodes Technical Reference and Integration Documentation # Version 1.0 | Last Updated March 2025 # This document contains technical reference material for common integrations and deployment procedures. ## QuickBooks Online Integration The QuickBooks Online API uses OAuth 2.0 for authentication. You will need to register your application in the Intuit Developer Portal to obtain client credentials. The base URL for the API is https://quickbooks.api.intuit.com/v3/company/{realmId}. Common endpoints include /invoice, /customer, /payment, and /bill. Rate limits apply: 500 requests per minute for production apps. Always implement exponential backoff for 429 responses. ## Stripe Payment Integration Stripe provides both client-side (Stripe.js) and server-side APIs. For PCI compliance, never pass raw card numbers through your server—use Stripe Elements or the Payment Intents API. Webhooks are essential for handling asynchronous events like payment succeeded or subscription renewed. Configure your webhook endpoint to verify signatures using the Stripe-Signature header. ## ShipStation Integration The ShipStation API is REST-based. Authentication uses API key and API secret in the Authorization header. Endpoints cover orders, shipments, carriers, and warehouses. Poll for new orders or use webhooks if available for your plan. Batch operations are supported for bulk label creation. ## Twilio SMS Integration Twilio's REST API requires Account SID and Auth Token. The Messaging API endpoint is /2010-04-01/Accounts/{AccountSid}/Messages.json. For two-way messaging, configure a webhook URL to receive incoming messages. Consider using a queue for high-volume outbound SMS to avoid rate limits. # PentaCodes Technical Reference and Integration Documentation # Version 1.0 | Last Updated March 2025 # This document contains technical reference material for common integrations and deployment procedures. ## QuickBooks Online Integration The QuickBooks Online API uses OAuth 2.0 for authentication. You will need to register your application in the Intuit Developer Portal to obtain client credentials. The base URL for the API is https://quickbooks.api.intuit.com/v3/company/{realmId}. Common endpoints include /invoice, /customer, /payment, and /bill. Rate limits apply: 500 requests per minute for production apps. Always implement exponential backoff for 429 responses. ## Stripe Payment Integration Stripe provides both client-side (Stripe.js) and server-side APIs. For PCI compliance, never pass raw card numbers through your server—use Stripe Elements or the Payment Intents API. Webhooks are essential for handling asynchronous events like payment succeeded or subscription renewed. Configure your webhook endpoint to verify signatures using the Stripe-Signature header. ## ShipStation Integration The ShipStation API is REST-based. Authentication uses API key and API secret in the Authorization header. Endpoints cover orders, shipments, carriers, and warehouses. Poll for new orders or use webhooks if available for your plan. Batch operations are supported for bulk label creation. ## Twilio SMS Integration Twilio's REST API requires Account SID and Auth Token. The Messaging API endpoint is /2010-04-01/Accounts/{AccountSid}/Messages.json. For two-way messaging, configure a webhook URL to receive incoming messages. Consider using a queue for high-volume outbound SMS to avoid rate limits. # PentaCodes Technical Reference and Integration Documentation # Version 1.0 | Last Updated March 2025 # This document contains technical reference material for common integrations and deployment procedures. ## QuickBooks Online Integration The QuickBooks Online API uses OAuth 2.0 for authentication. You will need to register your application in the Intuit Developer Portal to obtain client credentials. The base URL for the API is https://quickbooks.api.intuit.com/v3/company/{realmId}. Common endpoints include /invoice, /customer, /payment, and /bill. Rate limits apply: 500 requests per minute for production apps. Always implement exponential backoff for 429 responses. ## Stripe Payment Integration Stripe provides both client-side (Stripe.js) and server-side APIs. For PCI compliance, never pass raw card numbers through your server—use Stripe Elements or the Payment Intents API. Webhooks are essential for handling asynchronous events like payment succeeded or subscription renewed. Configure your webhook endpoint to verify signatures using the Stripe-Signature header. ## ShipStation Integration The ShipStation API is REST-based. Authentication uses API key and API secret in the Authorization header. Endpoints cover orders, shipments, carriers, and warehouses. Poll for new orders or use webhooks if available for your plan. Batch operations are supported for bulk label creation. ## Twilio SMS Integration Twilio's REST API requires Account SID and Auth Token. The Messaging API endpoint is /2010-04-01/Accounts/{AccountSid}/Messages.json. For two-way messaging, configure a webhook URL to receive incoming messages. Consider using a queue for high-volume outbound SMS to avoid rate limits. # PentaCodes Technical Reference and Integration Documentation # Version 1.0 | Last Updated March 2025 # This document contains technical reference material for common integrations and deployment procedures. ## QuickBooks Online Integration The QuickBooks Online API uses OAuth 2.0 for authentication. You will need to register your application in the Intuit Developer Portal to obtain client credentials. The base URL for the API is https://quickbooks.api.intuit.com/v3/company/{realmId}. Common endpoints include /invoice, /customer, /payment, and /bill. Rate limits apply: 500 requests per minute for production apps. Always implement exponential backoff for 429 responses. ## Stripe Payment Integration Stripe provides both client-side (Stripe.js) and server-side APIs. For PCI compliance, never pass raw card numbers through your server—use Stripe Elements or the Payment Intents API. Webhooks are essential for handling asynchronous events like payment succeeded or subscription renewed. Configure your webhook endpoint to verify signatures using the Stripe-Signature header. ## ShipStation Integration The ShipStation API is REST-based. Authentication uses API key and API secret in the Authorization header. Endpoints cover orders, shipments, carriers, and warehouses. Poll for new orders or use webhooks if available for your plan. Batch operations are supported for bulk label creation. ## Twilio SMS Integration Twilio's REST API requires Account SID and Auth Token. The Messaging API endpoint is /2010-04-01/Accounts/{AccountSid}/Messages.json. For two-way messaging, configure a webhook URL to receive incoming messages. Consider using a queue for high-volume outbound SMS to avoid rate limits. # PentaCodes Technical Reference and Integration Documentation # Version 1.0 | Last Updated March 2025 # This document contains technical reference material for common integrations and deployment procedures. ## QuickBooks Online Integration The QuickBooks Online API uses OAuth 2.0 for authentication. You will need to register your application in the Intuit Developer Portal to obtain client credentials. The base URL for the API is https://quickbooks.api.intuit.com/v3/company/{realmId}. Common endpoints include /invoice, /customer, /payment, and /bill. Rate limits apply: 500 requests per minute for production apps. Always implement exponential backoff for 429 responses. ## Stripe Payment Integration Stripe provides both client-side (Stripe.js) and server-side APIs. For PCI compliance, never pass raw card numbers through your server—use Stripe Elements or the Payment Intents API. Webhooks are essential for handling asynchronous events like payment succeeded or subscription renewed. Configure your webhook endpoint to verify signatures using the Stripe-Signature header. ## ShipStation Integration The ShipStation API is REST-based. Authentication uses API key and API secret in the Authorization header. Endpoints cover orders, shipments, carriers, and warehouses. Poll for new orders or use webhooks if available for your plan. Batch operations are supported for bulk label creation. ## Twilio SMS Integration Twilio's REST API requires Account SID and Auth Token. The Messaging API endpoint is /2010-04-01/Accounts/{AccountSid}/Messages.json. For two-way messaging, configure a webhook URL to receive incoming messages. Consider using a queue for high-volume outbound SMS to avoid rate limits. # PentaCodes Technical Reference and Integration Documentation # Version 1.0 | Last Updated March 2025 # This document contains technical reference material for common integrations and deployment procedures. ## QuickBooks Online Integration The QuickBooks Online API uses OAuth 2.0 for authentication. You will need to register your application in the Intuit Developer Portal to obtain client credentials. The base URL for the API is https://quickbooks.api.intuit.com/v3/company/{realmId}. Common endpoints include /invoice, /customer, /payment, and /bill. Rate limits apply: 500 requests per minute for production apps. Always implement exponential backoff for 429 responses. ## Stripe Payment Integration Stripe provides both client-side (Stripe.js) and server-side APIs. For PCI compliance, never pass raw card numbers through your server—use Stripe Elements or the Payment Intents API. Webhooks are essential for handling asynchronous events like payment succeeded or subscription renewed. Configure your webhook endpoint to verify signatures using the Stripe-Signature header. ## ShipStation Integration The ShipStation API is REST-based. Authentication uses API key and API secret in the Authorization header. Endpoints cover orders, shipments, carriers, and warehouses. Poll for new orders or use webhooks if available for your plan. Batch operations are supported for bulk label creation. ## Twilio SMS Integration Twilio's REST API requires Account SID and Auth Token. The Messaging API endpoint is /2010-04-01/Accounts/{AccountSid}/Messages.json. For two-way messaging, configure a webhook URL to receive incoming messages. Consider using a queue for high-volume outbound SMS to avoid rate limits. # PentaCodes Technical Reference and Integration Documentation # Version 1.0 | Last Updated March 2025 # This document contains technical reference material for common integrations and deployment procedures. ## QuickBooks Online Integration The QuickBooks Online API uses OAuth 2.0 for authentication. You will need to register your application in the Intuit Developer Portal to obtain client credentials. The base URL for the API is https://quickbooks.api.intuit.com/v3/company/{realmId}. Common endpoints include /invoice, /customer, /payment, and /bill. Rate limits apply: 500 requests per minute for production apps. Always implement exponential backoff for 429 responses. ## Stripe Payment Integration Stripe provides both client-side (Stripe.js) and server-side APIs. For PCI compliance, never pass raw card numbers through your server—use Stripe Elements or the Payment Intents API. Webhooks are essential for handling asynchronous events like payment succeeded or subscription renewed. Configure your webhook endpoint to verify signatures using the Stripe-Signature header. ## ShipStation Integration The ShipStation API is REST-based. Authentication uses API key and API secret in the Authorization header. Endpoints cover orders, shipments, carriers, and warehouses. Poll for new orders or use webhooks if available for your plan. Batch operations are supported for bulk label creation. ## Twilio SMS Integration Twilio's REST API requires Account SID and Auth Token. The Messaging API endpoint is /2010-04-01/Accounts/{AccountSid}/Messages.json. For two-way messaging, configure a webhook URL to receive incoming messages. Consider using a queue for high-volume outbound SMS to avoid rate limits. # PentaCodes Technical Reference and Integration Documentation # Version 1.0 | Last Updated March 2025 # This document contains technical reference material for common integrations and deployment procedures. ## QuickBooks Online Integration The QuickBooks Online API uses OAuth 2.0 for authentication. You will need to register your application in the Intuit Developer Portal to obtain client credentials. The base URL for the API is https://quickbooks.api.intuit.com/v3/company/{realmId}. Common endpoints include /invoice, /customer, /payment, and /bill. Rate limits apply: 500 requests per minute for production apps. Always implement exponential backoff for 429 responses. ## Stripe Payment Integration Stripe provides both client-side (Stripe.js) and server-side APIs. For PCI compliance, never pass raw card numbers through your server—use Stripe Elements or the Payment Intents API. Webhooks are essential for handling asynchronous events like payment succeeded or subscription renewed. Configure your webhook endpoint to verify signatures using the Stripe-Signature header. ## ShipStation Integration The ShipStation API is REST-based. Authentication uses API key and API secret in the Authorization header. Endpoints cover orders, shipments, carriers, and warehouses. Poll for new orders or use webhooks if available for your plan. Batch operations are supported for bulk label creation. ## Twilio SMS Integration Twilio's REST API requires Account SID and Auth Token. The Messaging API endpoint is /2010-04-01/Accounts/{AccountSid}/Messages.json. For two-way messaging, configure a webhook URL to receive incoming messages. Consider using a queue for high-volume outbound SMS to avoid rate limits. # PentaCodes Technical Reference and Integration Documentation # Version 1.0 | Last Updated March 2025 # This document contains technical reference material for common integrations and deployment procedures. ## QuickBooks Online Integration The QuickBooks Online API uses OAuth 2.0 for authentication. You will need to register your application in the Intuit Developer Portal to obtain client credentials. The base URL for the API is https://quickbooks.api.intuit.com/v3/company/{realmId}. Common endpoints include /invoice, /customer, /payment, and /bill. Rate limits apply: 500 requests per minute for production apps. Always implement exponential backoff for 429 responses. ## Stripe Payment Integration Stripe provides both client-side (Stripe.js) and server-side APIs. For PCI compliance, never pass raw card numbers through your server—use Stripe Elements or the Payment Intents API. Webhooks are essential for handling asynchronous events like payment succeeded or subscription renewed. Configure your webhook endpoint to verify signatures using the Stripe-Signature header. ## ShipStation Integration The ShipStation API is REST-based. Authentication uses API key and API secret in the Authorization header. Endpoints cover orders, shipments, carriers, and warehouses. Poll for new orders or use webhooks if available for your plan. Batch operations are supported for bulk label creation. ## Twilio SMS Integration Twilio's REST API requires Account SID and Auth Token. The Messaging API endpoint is /2010-04-01/Accounts/{AccountSid}/Messages.json. For two-way messaging, configure a webhook URL to receive incoming messages. Consider using a queue for high-volume outbound SMS to avoid rate limits. # PentaCodes Technical Reference and Integration Documentation # Version 1.0 | Last Updated March 2025 # This document contains technical reference material for common integrations and deployment procedures. ## QuickBooks Online Integration The QuickBooks Online API uses OAuth 2.0 for authentication. You will need to register your application in the Intuit Developer Portal to obtain client credentials. The base URL for the API is https://quickbooks.api.intuit.com/v3/company/{realmId}. Common endpoints include /invoice, /customer, /payment, and /bill. Rate limits apply: 500 requests per minute for production apps. Always implement exponential backoff for 429 responses. ## Stripe Payment Integration Stripe provides both client-side (Stripe.js) and server-side APIs. For PCI compliance, never pass raw card numbers through your server—use Stripe Elements or the Payment Intents API. Webhooks are essential for handling asynchronous events like payment succeeded or subscription renewed. Configure your webhook endpoint to verify signatures using the Stripe-Signature header. ## ShipStation Integration The ShipStation API is REST-based. Authentication uses API key and API secret in the Authorization header. Endpoints cover orders, shipments, carriers, and warehouses. Poll for new orders or use webhooks if available for your plan. Batch operations are supported for bulk label creation. ## Twilio SMS Integration Twilio's REST API requires Account SID and Auth Token. The Messaging API endpoint is /2010-04-01/Accounts/{AccountSid}/Messages.json. For two-way messaging, configure a webhook URL to receive incoming messages. Consider using a queue for high-volume outbound SMS to avoid rate limits. # PentaCodes Technical Reference and Integration Documentation # Version 1.0 | Last Updated March 2025 # This document contains technical reference material for common integrations and deployment procedures. ## QuickBooks Online Integration The QuickBooks Online API uses OAuth 2.0 for authentication. You will need to register your application in the Intuit Developer Portal to obtain client credentials. The base URL for the API is https://quickbooks.api.intuit.com/v3/company/{realmId}. Common endpoints include /invoice, /customer, /payment, and /bill. Rate limits apply: 500 requests per minute for production apps. Always implement exponential backoff for 429 responses. ## Stripe Payment Integration Stripe provides both client-side (Stripe.js) and server-side APIs. For PCI compliance, never pass raw card numbers through your server—use Stripe Elements or the Payment Intents API. Webhooks are essential for handling asynchronous events like payment succeeded or subscription renewed. Configure your webhook endpoint to verify signatures using the Stripe-Signature header. ## ShipStation Integration The ShipStation API is REST-based. Authentication uses API key and API secret in the Authorization header. Endpoints cover orders, shipments, carriers, and warehouses. Poll for new orders or use webhooks if available for your plan. Batch operations are supported for bulk label creation. ## Twilio SMS Integration Twilio's REST API requires Account SID and Auth Token. The Messaging API endpoint is /2010-04-01/Accounts/{AccountSid}/Messages.json. For two-way messaging, configure a webhook URL to receive incoming messages. Consider using a queue for high-volume outbound SMS to avoid rate limits. # PentaCodes Technical Reference and Integration Documentation # Version 1.0 | Last Updated March 2025 # This document contains technical reference material for common integrations and deployment procedures. ## QuickBooks Online Integration The QuickBooks Online API uses OAuth 2.0 for authentication. You will need to register your application in the Intuit Developer Portal to obtain client credentials. The base URL for the API is https://quickbooks.api.intuit.com/v3/company/{realmId}. Common endpoints include /invoice, /customer, /payment, and /bill. Rate limits apply: 500 requests per minute for production apps. Always implement exponential backoff for 429 responses. ## Stripe Payment Integration Stripe provides both client-side (Stripe.js) and server-side APIs. For PCI compliance, never pass raw card numbers through your server—use Stripe Elements or the Payment Intents API. Webhooks are essential for handling asynchronous events like payment succeeded or subscription renewed. Configure your webhook endpoint to verify signatures using the Stripe-Signature header. ## ShipStation Integration The ShipStation API is REST-based. Authentication uses API key and API secret in the Authorization header. Endpoints cover orders, shipments, carriers, and warehouses. Poll for new orders or use webhooks if available for your plan. Batch operations are supported for bulk label creation. ## Twilio SMS Integration Twilio's REST API requires Account SID and Auth Token. The Messaging API endpoint is /2010-04-01/Accounts/{AccountSid}/Messages.json. For two-way messaging, configure a webhook URL to receive incoming messages. Consider using a queue for high-volume outbound SMS to avoid rate limits. # PentaCodes Technical Reference and Integration Documentation # Version 1.0 | Last Updated March 2025 # This document contains technical reference material for common integrations and deployment procedures. ## QuickBooks Online Integration The QuickBooks Online API uses OAuth 2.0 for authentication. You will need to register your application in the Intuit Developer Portal to obtain client credentials. The base URL for the API is https://quickbooks.api.intuit.com/v3/company/{realmId}. Common endpoints include /invoice, /customer, /payment, and /bill. Rate limits apply: 500 requests per minute for production apps. Always implement exponential backoff for 429 responses. ## Stripe Payment Integration Stripe provides both client-side (Stripe.js) and server-side APIs. For PCI compliance, never pass raw card numbers through your server—use Stripe Elements or the Payment Intents API. Webhooks are essential for handling asynchronous events like payment succeeded or subscription renewed. Configure your webhook endpoint to verify signatures using the Stripe-Signature header. ## ShipStation Integration The ShipStation API is REST-based. Authentication uses API key and API secret in the Authorization header. Endpoints cover orders, shipments, carriers, and warehouses. Poll for new orders or use webhooks if available for your plan. Batch operations are supported for bulk label creation. ## Twilio SMS Integration Twilio's REST API requires Account SID and Auth Token. The Messaging API endpoint is /2010-04-01/Accounts/{AccountSid}/Messages.json. For two-way messaging, configure a webhook URL to receive incoming messages. Consider using a queue for high-volume outbound SMS to avoid rate limits. # PentaCodes Technical Reference and Integration Documentation # Version 1.0 | Last Updated March 2025 # This document contains technical reference material for common integrations and deployment procedures. ## QuickBooks Online Integration The QuickBooks Online API uses OAuth 2.0 for authentication. You will need to register your application in the Intuit Developer Portal to obtain client credentials. The base URL for the API is https://quickbooks.api.intuit.com/v3/company/{realmId}. Common endpoints include /invoice, /customer, /payment, and /bill. Rate limits apply: 500 requests per minute for production apps. Always implement exponential backoff for 429 responses. ## Stripe Payment Integration Stripe provides both client-side (Stripe.js) and server-side APIs. For PCI compliance, never pass raw card numbers through your server—use Stripe Elements or the Payment Intents API. Webhooks are essential for handling asynchronous events like payment succeeded or subscription renewed. Configure your webhook endpoint to verify signatures using the Stripe-Signature header. ## ShipStation Integration The ShipStation API is REST-based. Authentication uses API key and API secret in the Authorization header. Endpoints cover orders, shipments, carriers, and warehouses. Poll for new orders or use webhooks if available for your plan. Batch operations are supported for bulk label creation. ## Twilio SMS Integration Twilio's REST API requires Account SID and Auth Token. The Messaging API endpoint is /2010-04-01/Accounts/{AccountSid}/Messages.json. For two-way messaging, configure a webhook URL to receive incoming messages. Consider using a queue for high-volume outbound SMS to avoid rate limits. # PentaCodes Technical Reference and Integration Documentation # Version 1.0 | Last Updated March 2025 # This document contains technical reference material for common integrations and deployment procedures. ## QuickBooks Online Integration The QuickBooks Online API uses OAuth 2.0 for authentication. You will need to register your application in the Intuit Developer Portal to obtain client credentials. The base URL for the API is https://quickbooks.api.intuit.com/v3/company/{realmId}. Common endpoints include /invoice, /customer, /payment, and /bill. Rate limits apply: 500 requests per minute for production apps. Always implement exponential backoff for 429 responses. ## Stripe Payment Integration Stripe provides both client-side (Stripe.js) and server-side APIs. For PCI compliance, never pass raw card numbers through your server—use Stripe Elements or the Payment Intents API. Webhooks are essential for handling asynchronous events like payment succeeded or subscription renewed. Configure your webhook endpoint to verify signatures using the Stripe-Signature header. ## ShipStation Integration The ShipStation API is REST-based. Authentication uses API key and API secret in the Authorization header. Endpoints cover orders, shipments, carriers, and warehouses. Poll for new orders or use webhooks if available for your plan. Batch operations are supported for bulk label creation. ## Twilio SMS Integration Twilio's REST API requires Account SID and Auth Token. The Messaging API endpoint is /2010-04-01/Accounts/{AccountSid}/Messages.json. For two-way messaging, configure a webhook URL to receive incoming messages. Consider using a queue for high-volume outbound SMS to avoid rate limits. # PentaCodes Technical Reference and Integration Documentation # Version 1.0 | Last Updated March 2025 # This document contains technical reference material for common integrations and deployment procedures. ## QuickBooks Online Integration The QuickBooks Online API uses OAuth 2.0 for authentication. You will need to register your application in the Intuit Developer Portal to obtain client credentials. The base URL for the API is https://quickbooks.api.intuit.com/v3/company/{realmId}. Common endpoints include /invoice, /customer, /payment, and /bill. Rate limits apply: 500 requests per minute for production apps. Always implement exponential backoff for 429 responses. ## Stripe Payment Integration Stripe provides both client-side (Stripe.js) and server-side APIs. For PCI compliance, never pass raw card numbers through your server—use Stripe Elements or the Payment Intents API. Webhooks are essential for handling asynchronous events like payment succeeded or subscription renewed. Configure your webhook endpoint to verify signatures using the Stripe-Signature header. ## ShipStation Integration The ShipStation API is REST-based. Authentication uses API key and API secret in the Authorization header. Endpoints cover orders, shipments, carriers, and warehouses. Poll for new orders or use webhooks if available for your plan. Batch operations are supported for bulk label creation. ## Twilio SMS Integration Twilio's REST API requires Account SID and Auth Token. The Messaging API endpoint is /2010-04-01/Accounts/{AccountSid}/Messages.json. For two-way messaging, configure a webhook URL to receive incoming messages. Consider using a queue for high-volume outbound SMS to avoid rate limits. # PentaCodes Technical Reference and Integration Documentation # Version 1.0 | Last Updated March 2025 # This document contains technical reference material for common integrations and deployment procedures. ## QuickBooks Online Integration The QuickBooks Online API uses OAuth 2.0 for authentication. You will need to register your application in the Intuit Developer Portal to obtain client credentials. The base URL for the API is https://quickbooks.api.intuit.com/v3/company/{realmId}. Common endpoints include /invoice, /customer, /payment, and /bill. Rate limits apply: 500 requests per minute for production apps. Always implement exponential backoff for 429 responses. ## Stripe Payment Integration Stripe provides both client-side (Stripe.js) and server-side APIs. For PCI compliance, never pass raw card numbers through your server—use Stripe Elements or the Payment Intents API. Webhooks are essential for handling asynchronous events like payment succeeded or subscription renewed. Configure your webhook endpoint to verify signatures using the Stripe-Signature header. ## ShipStation Integration The ShipStation API is REST-based. Authentication uses API key and API secret in the Authorization header. Endpoints cover orders, shipments, carriers, and warehouses. Poll for new orders or use webhooks if available for your plan. Batch operations are supported for bulk label creation. ## Twilio SMS Integration Twilio's REST API requires Account SID and Auth Token. The Messaging API endpoint is /2010-04-01/Accounts/{AccountSid}/Messages.json. For two-way messaging, configure a webhook URL to receive incoming messages. Consider using a queue for high-volume outbound SMS to avoid rate limits. # PentaCodes Technical Reference and Integration Documentation # Version 1.0 | Last Updated March 2025 # This document contains technical reference material for common integrations and deployment procedures. ## QuickBooks Online Integration The QuickBooks Online API uses OAuth 2.0 for authentication. You will need to register your application in the Intuit Developer Portal to obtain client credentials. The base URL for the API is https://quickbooks.api.intuit.com/v3/company/{realmId}. Common endpoints include /invoice, /customer, /payment, and /bill. Rate limits apply: 500 requests per minute for production apps. Always implement exponential backoff for 429 responses. ## Stripe Payment Integration Stripe provides both client-side (Stripe.js) and server-side APIs. For PCI compliance, never pass raw card numbers through your server—use Stripe Elements or the Payment Intents API. Webhooks are essential for handling asynchronous events like payment succeeded or subscription renewed. Configure your webhook endpoint to verify signatures using the Stripe-Signature header. ## ShipStation Integration The ShipStation API is REST-based. Authentication uses API key and API secret in the Authorization header. Endpoints cover orders, shipments, carriers, and warehouses. Poll for new orders or use webhooks if available for your plan. Batch operations are supported for bulk label creation. ## Twilio SMS Integration Twilio's REST API requires Account SID and Auth Token. The Messaging API endpoint is /2010-04-01/Accounts/{AccountSid}/Messages.json. For two-way messaging, configure a webhook URL to receive incoming messages. Consider using a queue for high-volume outbound SMS to avoid rate limits. # PentaCodes Technical Reference and Integration Documentation # Version 1.0 | Last Updated March 2025 # This document contains technical reference material for common integrations and deployment procedures. ## QuickBooks Online Integration The QuickBooks Online API uses OAuth 2.0 for authentication. You will need to register your application in the Intuit Developer Portal to obtain client credentials. The base URL for the API is https://quickbooks.api.intuit.com/v3/company/{realmId}. Common endpoints include /invoice, /customer, /payment, and /bill. Rate limits apply: 500 requests per minute for production apps. Always implement exponential backoff for 429 responses. ## Stripe Payment Integration Stripe provides both client-side (Stripe.js) and server-side APIs. For PCI compliance, never pass raw card numbers through your server—use Stripe Elements or the Payment Intents API. Webhooks are essential for handling asynchronous events like payment succeeded or subscription renewed. Configure your webhook endpoint to verify signatures using the Stripe-Signature header. ## ShipStation Integration The ShipStation API is REST-based. Authentication uses API key and API secret in the Authorization header. Endpoints cover orders, shipments, carriers, and warehouses. Poll for new orders or use webhooks if available for your plan. Batch operations are supported for bulk label creation. ## Twilio SMS Integration Twilio's REST API requires Account SID and Auth Token. The Messaging API endpoint is /2010-04-01/Accounts/{AccountSid}/Messages.json. For two-way messaging, configure a webhook URL to receive incoming messages. Consider using a queue for high-volume outbound SMS to avoid rate limits. # PentaCodes Technical Reference and Integration Documentation # Version 1.0 | Last Updated March 2025 # This document contains technical reference material for common integrations and deployment procedures. ## QuickBooks Online Integration The QuickBooks Online API uses OAuth 2.0 for authentication. You will need to register your application in the Intuit Developer Portal to obtain client credentials. The base URL for the API is https://quickbooks.api.intuit.com/v3/company/{realmId}. Common endpoints include /invoice, /customer, /payment, and /bill. Rate limits apply: 500 requests per minute for production apps. Always implement exponential backoff for 429 responses. ## Stripe Payment Integration Stripe provides both client-side (Stripe.js) and server-side APIs. For PCI compliance, never pass raw card numbers through your server—use Stripe Elements or the Payment Intents API. Webhooks are essential for handling asynchronous events like payment succeeded or subscription renewed. Configure your webhook endpoint to verify signatures using the Stripe-Signature header. ## ShipStation Integration The ShipStation API is REST-based. Authentication uses API key and API secret in the Authorization header. Endpoints cover orders, shipments, carriers, and warehouses. Poll for new orders or use webhooks if available for your plan. Batch operations are supported for bulk label creation. ## Twilio SMS Integration Twilio's REST API requires Account SID and Auth Token. The Messaging API endpoint is /2010-04-01/Accounts/{AccountSid}/Messages.json. For two-way messaging, configure a webhook URL to receive incoming messages. Consider using a queue for high-volume outbound SMS to avoid rate limits. # PentaCodes Technical Reference and Integration Documentation # Version 1.0 | Last Updated March 2025 # This document contains technical reference material for common integrations and deployment procedures. ## QuickBooks Online Integration The QuickBooks Online API uses OAuth 2.0 for authentication. You will need to register your application in the Intuit Developer Portal to obtain client credentials. The base URL for the API is https://quickbooks.api.intuit.com/v3/company/{realmId}. Common endpoints include /invoice, /customer, /payment, and /bill. Rate limits apply: 500 requests per minute for production apps. Always implement exponential backoff for 429 responses. ## Stripe Payment Integration Stripe provides both client-side (Stripe.js) and server-side APIs. For PCI compliance, never pass raw card numbers through your server—use Stripe Elements or the Payment Intents API. Webhooks are essential for handling asynchronous events like payment succeeded or subscription renewed. Configure your webhook endpoint to verify signatures using the Stripe-Signature header. ## ShipStation Integration The ShipStation API is REST-based. Authentication uses API key and API secret in the Authorization header. Endpoints cover orders, shipments, carriers, and warehouses. Poll for new orders or use webhooks if available for your plan. Batch operations are supported for bulk label creation. ## Twilio SMS Integration Twilio's REST API requires Account SID and Auth Token. The Messaging API endpoint is /2010-04-01/Accounts/{AccountSid}/Messages.json. For two-way messaging, configure a webhook URL to receive incoming messages. Consider using a queue for high-volume outbound SMS to avoid rate limits. # PentaCodes Technical Reference and Integration Documentation # Version 1.0 | Last Updated March 2025 # This document contains technical reference material for common integrations and deployment procedures. ## QuickBooks Online Integration The QuickBooks Online API uses OAuth 2.0 for authentication. You will need to register your application in the Intuit Developer Portal to obtain client credentials. The base URL for the API is https://quickbooks.api.intuit.com/v3/company/{realmId}. Common endpoints include /invoice, /customer, /payment, and /bill. Rate limits apply: 500 requests per minute for production apps. Always implement exponential backoff for 429 responses. ## Stripe Payment Integration Stripe provides both client-side (Stripe.js) and server-side APIs. For PCI compliance, never pass raw card numbers through your server—use Stripe Elements or the Payment Intents API. Webhooks are essential for handling asynchronous events like payment succeeded or subscription renewed. Configure your webhook endpoint to verify signatures using the Stripe-Signature header. ## ShipStation Integration The ShipStation API is REST-based. Authentication uses API key and API secret in the Authorization header. Endpoints cover orders, shipments, carriers, and warehouses. Poll for new orders or use webhooks if available for your plan. Batch operations are supported for bulk label creation. ## Twilio SMS Integration Twilio's REST API requires Account SID and Auth Token. The Messaging API endpoint is /2010-04-01/Accounts/{AccountSid}/Messages.json. For two-way messaging, configure a webhook URL to receive incoming messages. Consider using a queue for high-volume outbound SMS to avoid rate limits. # PentaCodes Technical Reference and Integration Documentation # Version 1.0 | Last Updated March 2025 # This document contains technical reference material for common integrations and deployment procedures. ## QuickBooks Online Integration The QuickBooks Online API uses OAuth 2.0 for authentication. You will need to register your application in the Intuit Developer Portal to obtain client credentials. The base URL for the API is https://quickbooks.api.intuit.com/v3/company/{realmId}. Common endpoints include /invoice, /customer, /payment, and /bill. Rate limits apply: 500 requests per minute for production apps. Always implement exponential backoff for 429 responses. ## Stripe Payment Integration Stripe provides both client-side (Stripe.js) and server-side APIs. For PCI compliance, never pass raw card numbers through your server—use Stripe Elements or the Payment Intents API. Webhooks are essential for handling asynchronous events like payment succeeded or subscription renewed. Configure your webhook endpoint to verify signatures using the Stripe-Signature header. ## ShipStation Integration The ShipStation API is REST-based. Authentication uses API key and API secret in the Authorization header. Endpoints cover orders, shipments, carriers, and warehouses. Poll for new orders or use webhooks if available for your plan. Batch operations are supported for bulk label creation. ## Twilio SMS Integration Twilio's REST API requires Account SID and Auth Token. The Messaging API endpoint is /2010-04-01/Accounts/{AccountSid}/Messages.json. For two-way messaging, configure a webhook URL to receive incoming messages. Consider using a queue for high-volume outbound SMS to avoid rate limits. # PentaCodes Technical Reference and Integration Documentation # Version 1.0 | Last Updated March 2025 # This document contains technical reference material for common integrations and deployment procedures. ## QuickBooks Online Integration The QuickBooks Online API uses OAuth 2.0 for authentication. You will need to register your application in the Intuit Developer Portal to obtain client credentials. The base URL for the API is https://quickbooks.api.intuit.com/v3/company/{realmId}. Common endpoints include /invoice, /customer, /payment, and /bill. Rate limits apply: 500 requests per minute for production apps. Always implement exponential backoff for 429 responses. ## Stripe Payment Integration Stripe provides both client-side (Stripe.js) and server-side APIs. For PCI compliance, never pass raw card numbers through your server—use Stripe Elements or the Payment Intents API. Webhooks are essential for handling asynchronous events like payment succeeded or subscription renewed. Configure your webhook endpoint to verify signatures using the Stripe-Signature header. ## ShipStation Integration The ShipStation API is REST-based. Authentication uses API key and API secret in the Authorization header. Endpoints cover orders, shipments, carriers, and warehouses. Poll for new orders or use webhooks if available for your plan. Batch operations are supported for bulk label creation. ## Twilio SMS Integration Twilio's REST API requires Account SID and Auth Token. The Messaging API endpoint is /2010-04-01/Accounts/{AccountSid}/Messages.json. For two-way messaging, configure a webhook URL to receive incoming messages. Consider using a queue for high-volume outbound SMS to avoid rate limits. # PentaCodes Technical Reference and Integration Documentation # Version 1.0 | Last Updated March 2025 # This document contains technical reference material for common integrations and deployment procedures. ## QuickBooks Online Integration The QuickBooks Online API uses OAuth 2.0 for authentication. You will need to register your application in the Intuit Developer Portal to obtain client credentials. The base URL for the API is https://quickbooks.api.intuit.com/v3/company/{realmId}. Common endpoints include /invoice, /customer, /payment, and /bill. Rate limits apply: 500 requests per minute for production apps. Always implement exponential backoff for 429 responses. ## Stripe Payment Integration Stripe provides both client-side (Stripe.js) and server-side APIs. For PCI compliance, never pass raw card numbers through your server—use Stripe Elements or the Payment Intents API. Webhooks are essential for handling asynchronous events like payment succeeded or subscription renewed. Configure your webhook endpoint to verify signatures using the Stripe-Signature header. ## ShipStation Integration The ShipStation API is REST-based. Authentication uses API key and API secret in the Authorization header. Endpoints cover orders, shipments, carriers, and warehouses. Poll for new orders or use webhooks if available for your plan. Batch operations are supported for bulk label creation. ## Twilio SMS Integration Twilio's REST API requires Account SID and Auth Token. The Messaging API endpoint is /2010-04-01/Accounts/{AccountSid}/Messages.json. For two-way messaging, configure a webhook URL to receive incoming messages. Consider using a queue for high-volume outbound SMS to avoid rate limits. # PentaCodes Technical Reference and Integration Documentation # Version 1.0 | Last Updated March 2025 # This document contains technical reference material for common integrations and deployment procedures. ## QuickBooks Online Integration The QuickBooks Online API uses OAuth 2.0 for authentication. You will need to register your application in the Intuit Developer Portal to obtain client credentials. The base URL for the API is https://quickbooks.api.intuit.com/v3/company/{realmId}. Common endpoints include /invoice, /customer, /payment, and /bill. Rate limits apply: 500 requests per minute for production apps. Always implement exponential backoff for 429 responses. ## Stripe Payment Integration Stripe provides both client-side (Stripe.js) and server-side APIs. For PCI compliance, never pass raw card numbers through your server—use Stripe Elements or the Payment Intents API. Webhooks are essential for handling asynchronous events like payment succeeded or subscription renewed. Configure your webhook endpoint to verify signatures using the Stripe-Signature header. ## ShipStation Integration The ShipStation API is REST-based. Authentication uses API key and API secret in the Authorization header. Endpoints cover orders, shipments, carriers, and warehouses. Poll for new orders or use webhooks if available for your plan. Batch operations are supported for bulk label creation. ## Twilio SMS Integration Twilio's REST API requires Account SID and Auth Token. The Messaging API endpoint is /2010-04-01/Accounts/{AccountSid}/Messages.json. For two-way messaging, configure a webhook URL to receive incoming messages. Consider using a queue for high-volume outbound SMS to avoid rate limits. # PentaCodes Technical Reference and Integration Documentation # Version 1.0 | Last Updated March 2025 # This document contains technical reference material for common integrations and deployment procedures. ## QuickBooks Online Integration The QuickBooks Online API uses OAuth 2.0 for authentication. You will need to register your application in the Intuit Developer Portal to obtain client credentials. The base URL for the API is https://quickbooks.api.intuit.com/v3/company/{realmId}. Common endpoints include /invoice, /customer, /payment, and /bill. Rate limits apply: 500 requests per minute for production apps. Always implement exponential backoff for 429 responses. ## Stripe Payment Integration Stripe provides both client-side (Stripe.js) and server-side APIs. For PCI compliance, never pass raw card numbers through your server—use Stripe Elements or the Payment Intents API. Webhooks are essential for handling asynchronous events like payment succeeded or subscription renewed. Configure your webhook endpoint to verify signatures using the Stripe-Signature header. ## ShipStation Integration The ShipStation API is REST-based. Authentication uses API key and API secret in the Authorization header. Endpoints cover orders, shipments, carriers, and warehouses. Poll for new orders or use webhooks if available for your plan. Batch operations are supported for bulk label creation. ## Twilio SMS Integration Twilio's REST API requires Account SID and Auth Token. The Messaging API endpoint is /2010-04-01/Accounts/{AccountSid}/Messages.json. For two-way messaging, configure a webhook URL to receive incoming messages. Consider using a queue for high-volume outbound SMS to avoid rate limits. # PentaCodes Technical Reference and Integration Documentation # Version 1.0 | Last Updated March 2025 # This document contains technical reference material for common integrations and deployment procedures. ## QuickBooks Online Integration The QuickBooks Online API uses OAuth 2.0 for authentication. You will need to register your application in the Intuit Developer Portal to obtain client credentials. The base URL for the API is https://quickbooks.api.intuit.com/v3/company/{realmId}. Common endpoints include /invoice, /customer, /payment, and /bill. Rate limits apply: 500 requests per minute for production apps. Always implement exponential backoff for 429 responses. ## Stripe Payment Integration Stripe provides both client-side (Stripe.js) and server-side APIs. For PCI compliance, never pass raw card numbers through your server—use Stripe Elements or the Payment Intents API. Webhooks are essential for handling asynchronous events like payment succeeded or subscription renewed. Configure your webhook endpoint to verify signatures using the Stripe-Signature header. ## ShipStation Integration The ShipStation API is REST-based. Authentication uses API key and API secret in the Authorization header. Endpoints cover orders, shipments, carriers, and warehouses. Poll for new orders or use webhooks if available for your plan. Batch operations are supported for bulk label creation. ## Twilio SMS Integration Twilio's REST API requires Account SID and Auth Token. The Messaging API endpoint is /2010-04-01/Accounts/{AccountSid}/Messages.json. For two-way messaging, configure a webhook URL to receive incoming messages. Consider using a queue for high-volume outbound SMS to avoid rate limits. # PentaCodes Technical Reference and Integration Documentation # Version 1.0 | Last Updated March 2025 # This document contains technical reference material for common integrations and deployment procedures. ## QuickBooks Online Integration The QuickBooks Online API uses OAuth 2.0 for authentication. You will need to register your application in the Intuit Developer Portal to obtain client credentials. The base URL for the API is https://quickbooks.api.intuit.com/v3/company/{realmId}. Common endpoints include /invoice, /customer, /payment, and /bill. Rate limits apply: 500 requests per minute for production apps. Always implement exponential backoff for 429 responses. ## Stripe Payment Integration Stripe provides both client-side (Stripe.js) and server-side APIs. For PCI compliance, never pass raw card numbers through your server—use Stripe Elements or the Payment Intents API. Webhooks are essential for handling asynchronous events like payment succeeded or subscription renewed. Configure your webhook endpoint to verify signatures using the Stripe-Signature header. ## ShipStation Integration The ShipStation API is REST-based. Authentication uses API key and API secret in the Authorization header. Endpoints cover orders, shipments, carriers, and warehouses. Poll for new orders or use webhooks if available for your plan. Batch operations are supported for bulk label creation. ## Twilio SMS Integration Twilio's REST API requires Account SID and Auth Token. The Messaging API endpoint is /2010-04-01/Accounts/{AccountSid}/Messages.json. For two-way messaging, configure a webhook URL to receive incoming messages. Consider using a queue for high-volume outbound SMS to avoid rate limits. # PentaCodes Technical Reference and Integration Documentation # Version 1.0 | Last Updated March 2025 # This document contains technical reference material for common integrations and deployment procedures. ## QuickBooks Online Integration The QuickBooks Online API uses OAuth 2.0 for authentication. You will need to register your application in the Intuit Developer Portal to obtain client credentials. The base URL for the API is https://quickbooks.api.intuit.com/v3/company/{realmId}. Common endpoints include /invoice, /customer, /payment, and /bill. Rate limits apply: 500 requests per minute for production apps. Always implement exponential backoff for 429 responses. ## Stripe Payment Integration Stripe provides both client-side (Stripe.js) and server-side APIs. For PCI compliance, never pass raw card numbers through your server—use Stripe Elements or the Payment Intents API. Webhooks are essential for handling asynchronous events like payment succeeded or subscription renewed. Configure your webhook endpoint to verify signatures using the Stripe-Signature header. ## ShipStation Integration The ShipStation API is REST-based. Authentication uses API key and API secret in the Authorization header. Endpoints cover orders, shipments, carriers, and warehouses. Poll for new orders or use webhooks if available for your plan. Batch operations are supported for bulk label creation. ## Twilio SMS Integration Twilio's REST API requires Account SID and Auth Token. The Messaging API endpoint is /2010-04-01/Accounts/{AccountSid}/Messages.json. For two-way messaging, configure a webhook URL to receive incoming messages. Consider using a queue for high-volume outbound SMS to avoid rate limits. # PentaCodes Technical Reference and Integration Documentation # Version 1.0 | Last Updated March 2025 # This document contains technical reference material for common integrations and deployment procedures. ## QuickBooks Online Integration The QuickBooks Online API uses OAuth 2.0 for authentication. You will need to register your application in the Intuit Developer Portal to obtain client credentials. The base URL for the API is https://quickbooks.api.intuit.com/v3/company/{realmId}. Common endpoints include /invoice, /customer, /payment, and /bill. Rate limits apply: 500 requests per minute for production apps. Always implement exponential backoff for 429 responses. ## Stripe Payment Integration Stripe provides both client-side (Stripe.js) and server-side APIs. For PCI compliance, never pass raw card numbers through your server—use Stripe Elements or the Payment Intents API. Webhooks are essential for handling asynchronous events like payment succeeded or subscription renewed. Configure your webhook endpoint to verify signatures using the Stripe-Signature header. ## ShipStation Integration The ShipStation API is REST-based. Authentication uses API key and API secret in the Authorization header. Endpoints cover orders, shipments, carriers, and warehouses. Poll for new orders or use webhooks if available for your plan. Batch operations are supported for bulk label creation. ## Twilio SMS Integration Twilio's REST API requires Account SID and Auth Token. The Messaging API endpoint is /2010-04-01/Accounts/{AccountSid}/Messages.json. For two-way messaging, configure a webhook URL to receive incoming messages. Consider using a queue for high-volume outbound SMS to avoid rate limits. # PentaCodes Technical Reference and Integration Documentation # Version 1.0 | Last Updated March 2025 # This document contains technical reference material for common integrations and deployment procedures. ## QuickBooks Online Integration The QuickBooks Online API uses OAuth 2.0 for authentication. You will need to register your application in the Intuit Developer Portal to obtain client credentials. The base URL for the API is https://quickbooks.api.intuit.com/v3/company/{realmId}. Common endpoints include /invoice, /customer, /payment, and /bill. Rate limits apply: 500 requests per minute for production apps. Always implement exponential backoff for 429 responses. ## Stripe Payment Integration Stripe provides both client-side (Stripe.js) and server-side APIs. For PCI compliance, never pass raw card numbers through your server—use Stripe Elements or the Payment Intents API. Webhooks are essential for handling asynchronous events like payment succeeded or subscription renewed. Configure your webhook endpoint to verify signatures using the Stripe-Signature header. ## ShipStation Integration The ShipStation API is REST-based. Authentication uses API key and API secret in the Authorization header. Endpoints cover orders, shipments, carriers, and warehouses. Poll for new orders or use webhooks if available for your plan. Batch operations are supported for bulk label creation. ## Twilio SMS Integration Twilio's REST API requires Account SID and Auth Token. The Messaging API endpoint is /2010-04-01/Accounts/{AccountSid}/Messages.json. For two-way messaging, configure a webhook URL to receive incoming messages. Consider using a queue for high-volume outbound SMS to avoid rate limits. # PentaCodes Technical Reference and Integration Documentation # Version 1.0 | Last Updated March 2025 # This document contains technical reference material for common integrations and deployment procedures. ## QuickBooks Online Integration The QuickBooks Online API uses OAuth 2.0 for authentication. You will need to register your application in the Intuit Developer Portal to obtain client credentials. The base URL for the API is https://quickbooks.api.intuit.com/v3/company/{realmId}. Common endpoints include /invoice, /customer, /payment, and /bill. Rate limits apply: 500 requests per minute for production apps. Always implement exponential backoff for 429 responses. ## Stripe Payment Integration Stripe provides both client-side (Stripe.js) and server-side APIs. For PCI compliance, never pass raw card numbers through your server—use Stripe Elements or the Payment Intents API. Webhooks are essential for handling asynchronous events like payment succeeded or subscription renewed. Configure your webhook endpoint to verify signatures using the Stripe-Signature header. ## ShipStation Integration The ShipStation API is REST-based. Authentication uses API key and API secret in the Authorization header. Endpoints cover orders, shipments, carriers, and warehouses. Poll for new orders or use webhooks if available for your plan. Batch operations are supported for bulk label creation. ## Twilio SMS Integration Twilio's REST API requires Account SID and Auth Token. The Messaging API endpoint is /2010-04-01/Accounts/{AccountSid}/Messages.json. For two-way messaging, configure a webhook URL to receive incoming messages. Consider using a queue for high-volume outbound SMS to avoid rate limits. # PentaCodes Technical Reference and Integration Documentation # Version 1.0 | Last Updated March 2025 # This document contains technical reference material for common integrations and deployment procedures. ## QuickBooks Online Integration The QuickBooks Online API uses OAuth 2.0 for authentication. You will need to register your application in the Intuit Developer Portal to obtain client credentials. The base URL for the API is https://quickbooks.api.intuit.com/v3/company/{realmId}. Common endpoints include /invoice, /customer, /payment, and /bill. Rate limits apply: 500 requests per minute for production apps. Always implement exponential backoff for 429 responses. ## Stripe Payment Integration Stripe provides both client-side (Stripe.js) and server-side APIs. For PCI compliance, never pass raw card numbers through your server—use Stripe Elements or the Payment Intents API. Webhooks are essential for handling asynchronous events like payment succeeded or subscription renewed. Configure your webhook endpoint to verify signatures using the Stripe-Signature header. ## ShipStation Integration The ShipStation API is REST-based. Authentication uses API key and API secret in the Authorization header. Endpoints cover orders, shipments, carriers, and warehouses. Poll for new orders or use webhooks if available for your plan. Batch operations are supported for bulk label creation. ## Twilio SMS Integration Twilio's REST API requires Account SID and Auth Token. The Messaging API endpoint is /2010-04-01/Accounts/{AccountSid}/Messages.json. For two-way messaging, configure a webhook URL to receive incoming messages. Consider using a queue for high-volume outbound SMS to avoid rate limits. # PentaCodes Technical Reference and Integration Documentation # Version 1.0 | Last Updated March 2025 # This document contains technical reference material for common integrations and deployment procedures. ## QuickBooks Online Integration The QuickBooks Online API uses OAuth 2.0 for authentication. You will need to register your application in the Intuit Developer Portal to obtain client credentials. The base URL for the API is https://quickbooks.api.intuit.com/v3/company/{realmId}. Common endpoints include /invoice, /customer, /payment, and /bill. Rate limits apply: 500 requests per minute for production apps. Always implement exponential backoff for 429 responses. ## Stripe Payment Integration Stripe provides both client-side (Stripe.js) and server-side APIs. For PCI compliance, never pass raw card numbers through your server—use Stripe Elements or the Payment Intents API. Webhooks are essential for handling asynchronous events like payment succeeded or subscription renewed. Configure your webhook endpoint to verify signatures using the Stripe-Signature header. ## ShipStation Integration The ShipStation API is REST-based. Authentication uses API key and API secret in the Authorization header. Endpoints cover orders, shipments, carriers, and warehouses. Poll for new orders or use webhooks if available for your plan. Batch operations are supported for bulk label creation. ## Twilio SMS Integration Twilio's REST API requires Account SID and Auth Token. The Messaging API endpoint is /2010-04-01/Accounts/{AccountSid}/Messages.json. For two-way messaging, configure a webhook URL to receive incoming messages. Consider using a queue for high-volume outbound SMS to avoid rate limits. # PentaCodes Technical Reference and Integration Documentation # Version 1.0 | Last Updated March 2025 # This document contains technical reference material for common integrations and deployment procedures. ## QuickBooks Online Integration The QuickBooks Online API uses OAuth 2.0 for authentication. You will need to register your application in the Intuit Developer Portal to obtain client credentials. The base URL for the API is https://quickbooks.api.intuit.com/v3/company/{realmId}. Common endpoints include /invoice, /customer, /payment, and /bill. Rate limits apply: 500 requests per minute for production apps. Always implement exponential backoff for 429 responses. ## Stripe Payment Integration Stripe provides both client-side (Stripe.js) and server-side APIs. For PCI compliance, never pass raw card numbers through your server—use Stripe Elements or the Payment Intents API. Webhooks are essential for handling asynchronous events like payment succeeded or subscription renewed. Configure your webhook endpoint to verify signatures using the Stripe-Signature header. ## ShipStation Integration The ShipStation API is REST-based. Authentication uses API key and API secret in the Authorization header. Endpoints cover orders, shipments, carriers, and warehouses. Poll for new orders or use webhooks if available for your plan. Batch operations are supported for bulk label creation. ## Twilio SMS Integration Twilio's REST API requires Account SID and Auth Token. The Messaging API endpoint is /2010-04-01/Accounts/{AccountSid}/Messages.json. For two-way messaging, configure a webhook URL to receive incoming messages. Consider using a queue for high-volume outbound SMS to avoid rate limits. # PentaCodes Technical Reference and Integration Documentation # Version 1.0 | Last Updated March 2025 # This document contains technical reference material for common integrations and deployment procedures. ## QuickBooks Online Integration The QuickBooks Online API uses OAuth 2.0 for authentication. You will need to register your application in the Intuit Developer Portal to obtain client credentials. The base URL for the API is https://quickbooks.api.intuit.com/v3/company/{realmId}. Common endpoints include /invoice, /customer, /payment, and /bill. Rate limits apply: 500 requests per minute for production apps. Always implement exponential backoff for 429 responses. ## Stripe Payment Integration Stripe provides both client-side (Stripe.js) and server-side APIs. For PCI compliance, never pass raw card numbers through your server—use Stripe Elements or the Payment Intents API. Webhooks are essential for handling asynchronous events like payment succeeded or subscription renewed. Configure your webhook endpoint to verify signatures using the Stripe-Signature header. ## ShipStation Integration The ShipStation API is REST-based. Authentication uses API key and API secret in the Authorization header. Endpoints cover orders, shipments, carriers, and warehouses. Poll for new orders or use webhooks if available for your plan. Batch operations are supported for bulk label creation. ## Twilio SMS Integration Twilio's REST API requires Account SID and Auth Token. The Messaging API endpoint is /2010-04-01/Accounts/{AccountSid}/Messages.json. For two-way messaging, configure a webhook URL to receive incoming messages. Consider using a queue for high-volume outbound SMS to avoid rate limits. # PentaCodes Technical Reference and Integration Documentation # Version 1.0 | Last Updated March 2025 # This document contains technical reference material for common integrations and deployment procedures. ## QuickBooks Online Integration The QuickBooks Online API uses OAuth 2.0 for authentication. You will need to register your application in the Intuit Developer Portal to obtain client credentials. The base URL for the API is https://quickbooks.api.intuit.com/v3/company/{realmId}. Common endpoints include /invoice, /customer, /payment, and /bill. Rate limits apply: 500 requests per minute for production apps. Always implement exponential backoff for 429 responses. ## Stripe Payment Integration Stripe provides both client-side (Stripe.js) and server-side APIs. For PCI compliance, never pass raw card numbers through your server—use Stripe Elements or the Payment Intents API. Webhooks are essential for handling asynchronous events like payment succeeded or subscription renewed. Configure your webhook endpoint to verify signatures using the Stripe-Signature header. ## ShipStation Integration The ShipStation API is REST-based. Authentication uses API key and API secret in the Authorization header. Endpoints cover orders, shipments, carriers, and warehouses. Poll for new orders or use webhooks if available for your plan. Batch operations are supported for bulk label creation. ## Twilio SMS Integration Twilio's REST API requires Account SID and Auth Token. The Messaging API endpoint is /2010-04-01/Accounts/{AccountSid}/Messages.json. For two-way messaging, configure a webhook URL to receive incoming messages. Consider using a queue for high-volume outbound SMS to avoid rate limits. # PentaCodes Technical Reference and Integration Documentation # Version 1.0 | Last Updated March 2025 # This document contains technical reference material for common integrations and deployment procedures. ## QuickBooks Online Integration The QuickBooks Online API uses OAuth 2.0 for authentication. You will need to register your application in the Intuit Developer Portal to obtain client credentials. The base URL for the API is https://quickbooks.api.intuit.com/v3/company/{realmId}. Common endpoints include /invoice, /customer, /payment, and /bill. Rate limits apply: 500 requests per minute for production apps. Always implement exponential backoff for 429 responses. ## Stripe Payment Integration Stripe provides both client-side (Stripe.js) and server-side APIs. For PCI compliance, never pass raw card numbers through your server—use Stripe Elements or the Payment Intents API. Webhooks are essential for handling asynchronous events like payment succeeded or subscription renewed. Configure your webhook endpoint to verify signatures using the Stripe-Signature header. ## ShipStation Integration The ShipStation API is REST-based. Authentication uses API key and API secret in the Authorization header. Endpoints cover orders, shipments, carriers, and warehouses. Poll for new orders or use webhooks if available for your plan. Batch operations are supported for bulk label creation. ## Twilio SMS Integration Twilio's REST API requires Account SID and Auth Token. The Messaging API endpoint is /2010-04-01/Accounts/{AccountSid}/Messages.json. For two-way messaging, configure a webhook URL to receive incoming messages. Consider using a queue for high-volume outbound SMS to avoid rate limits. # PentaCodes Technical Reference and Integration Documentation # Version 1.0 | Last Updated March 2025 # This document contains technical reference material for common integrations and deployment procedures. ## QuickBooks Online Integration The QuickBooks Online API uses OAuth 2.0 for authentication. You will need to register your application in the Intuit Developer Portal to obtain client credentials. The base URL for the API is https://quickbooks.api.intuit.com/v3/company/{realmId}. Common endpoints include /invoice, /customer, /payment, and /bill. Rate limits apply: 500 requests per minute for production apps. Always implement exponential backoff for 429 responses. ## Stripe Payment Integration Stripe provides both client-side (Stripe.js) and server-side APIs. For PCI compliance, never pass raw card numbers through your server—use Stripe Elements or the Payment Intents API. Webhooks are essential for handling asynchronous events like payment succeeded or subscription renewed. Configure your webhook endpoint to verify signatures using the Stripe-Signature header. ## ShipStation Integration The ShipStation API is REST-based. Authentication uses API key and API secret in the Authorization header. Endpoints cover orders, shipments, carriers, and warehouses. Poll for new orders or use webhooks if available for your plan. Batch operations are supported for bulk label creation. ## Twilio SMS Integration Twilio's REST API requires Account SID and Auth Token. The Messaging API endpoint is /2010-04-01/Accounts/{AccountSid}/Messages.json. For two-way messaging, configure a webhook URL to receive incoming messages. Consider using a queue for high-volume outbound SMS to avoid rate limits. # PentaCodes Technical Reference and Integration Documentation # Version 1.0 | Last Updated March 2025 # This document contains technical reference material for common integrations and deployment procedures. ## QuickBooks Online Integration The QuickBooks Online API uses OAuth 2.0 for authentication. You will need to register your application in the Intuit Developer Portal to obtain client credentials. The base URL for the API is https://quickbooks.api.intuit.com/v3/company/{realmId}. Common endpoints include /invoice, /customer, /payment, and /bill. Rate limits apply: 500 requests per minute for production apps. Always implement exponential backoff for 429 responses. ## Stripe Payment Integration Stripe provides both client-side (Stripe.js) and server-side APIs. For PCI compliance, never pass raw card numbers through your server—use Stripe Elements or the Payment Intents API. Webhooks are essential for handling asynchronous events like payment succeeded or subscription renewed. Configure your webhook endpoint to verify signatures using the Stripe-Signature header. ## ShipStation Integration The ShipStation API is REST-based. Authentication uses API key and API secret in the Authorization header. Endpoints cover orders, shipments, carriers, and warehouses. Poll for new orders or use webhooks if available for your plan. Batch operations are supported for bulk label creation. ## Twilio SMS Integration Twilio's REST API requires Account SID and Auth Token. The Messaging API endpoint is /2010-04-01/Accounts/{AccountSid}/Messages.json. For two-way messaging, configure a webhook URL to receive incoming messages. Consider using a queue for high-volume outbound SMS to avoid rate limits. # PentaCodes Technical Reference and Integration Documentation # Version 1.0 | Last Updated March 2025 # This document contains technical reference material for common integrations and deployment procedures. ## QuickBooks Online Integration The QuickBooks Online API uses OAuth 2.0 for authentication. You will need to register your application in the Intuit Developer Portal to obtain client credentials. The base URL for the API is https://quickbooks.api.intuit.com/v3/company/{realmId}. Common endpoints include /invoice, /customer, /payment, and /bill. Rate limits apply: 500 requests per minute for production apps. Always implement exponential backoff for 429 responses. ## Stripe Payment Integration Stripe provides both client-side (Stripe.js) and server-side APIs. For PCI compliance, never pass raw card numbers through your server—use Stripe Elements or the Payment Intents API. Webhooks are essential for handling asynchronous events like payment succeeded or subscription renewed. Configure your webhook endpoint to verify signatures using the Stripe-Signature header. ## ShipStation Integration The ShipStation API is REST-based. Authentication uses API key and API secret in the Authorization header. Endpoints cover orders, shipments, carriers, and warehouses. Poll for new orders or use webhooks if available for your plan. Batch operations are supported for bulk label creation. ## Twilio SMS Integration Twilio's REST API requires Account SID and Auth Token. The Messaging API endpoint is /2010-04-01/Accounts/{AccountSid}/Messages.json. For two-way messaging, configure a webhook URL to receive incoming messages. Consider using a queue for high-volume outbound SMS to avoid rate limits. # PentaCodes Technical Reference and Integration Documentation # Version 1.0 | Last Updated March 2025 # This document contains technical reference material for common integrations and deployment procedures. ## QuickBooks Online Integration The QuickBooks Online API uses OAuth 2.0 for authentication. You will need to register your application in the Intuit Developer Portal to obtain client credentials. The base URL for the API is https://quickbooks.api.intuit.com/v3/company/{realmId}. Common endpoints include /invoice, /customer, /payment, and /bill. Rate limits apply: 500 requests per minute for production apps. Always implement exponential backoff for 429 responses. ## Stripe Payment Integration Stripe provides both client-side (Stripe.js) and server-side APIs. For PCI compliance, never pass raw card numbers through your server—use Stripe Elements or the Payment Intents API. Webhooks are essential for handling asynchronous events like payment succeeded or subscription renewed. Configure your webhook endpoint to verify signatures using the Stripe-Signature header. ## ShipStation Integration The ShipStation API is REST-based. Authentication uses API key and API secret in the Authorization header. Endpoints cover orders, shipments, carriers, and warehouses. Poll for new orders or use webhooks if available for your plan. Batch operations are supported for bulk label creation. ## Twilio SMS Integration Twilio's REST API requires Account SID and Auth Token. The Messaging API endpoint is /2010-04-01/Accounts/{AccountSid}/Messages.json. For two-way messaging, configure a webhook URL to receive incoming messages. Consider using a queue for high-volume outbound SMS to avoid rate limits. # PentaCodes Technical Reference and Integration Documentation # Version 1.0 | Last Updated March 2025 # This document contains technical reference material for common integrations and deployment procedures. ## QuickBooks Online Integration The QuickBooks Online API uses OAuth 2.0 for authentication. You will need to register your application in the Intuit Developer Portal to obtain client credentials. The base URL for the API is https://quickbooks.api.intuit.com/v3/company/{realmId}. Common endpoints include /invoice, /customer, /payment, and /bill. Rate limits apply: 500 requests per minute for production apps. Always implement exponential backoff for 429 responses. ## Stripe Payment Integration Stripe provides both client-side (Stripe.js) and server-side APIs. For PCI compliance, never pass raw card numbers through your server—use Stripe Elements or the Payment Intents API. Webhooks are essential for handling asynchronous events like payment succeeded or subscription renewed. Configure your webhook endpoint to verify signatures using the Stripe-Signature header. ## ShipStation Integration The ShipStation API is REST-based. Authentication uses API key and API secret in the Authorization header. Endpoints cover orders, shipments, carriers, and warehouses. Poll for new orders or use webhooks if available for your plan. Batch operations are supported for bulk label creation. ## Twilio SMS Integration Twilio's REST API requires Account SID and Auth Token. The Messaging API endpoint is /2010-04-01/Accounts/{AccountSid}/Messages.json. For two-way messaging, configure a webhook URL to receive incoming messages. Consider using a queue for high-volume outbound SMS to avoid rate limits. # PentaCodes Technical Reference and Integration Documentation # Version 1.0 | Last Updated March 2025 # This document contains technical reference material for common integrations and deployment procedures. ## QuickBooks Online Integration The QuickBooks Online API uses OAuth 2.0 for authentication. You will need to register your application in the Intuit Developer Portal to obtain client credentials. The base URL for the API is https://quickbooks.api.intuit.com/v3/company/{realmId}. Common endpoints include /invoice, /customer, /payment, and /bill. Rate limits apply: 500 requests per minute for production apps. Always implement exponential backoff for 429 responses. ## Stripe Payment Integration Stripe provides both client-side (Stripe.js) and server-side APIs. For PCI compliance, never pass raw card numbers through your server—use Stripe Elements or the Payment Intents API. Webhooks are essential for handling asynchronous events like payment succeeded or subscription renewed. Configure your webhook endpoint to verify signatures using the Stripe-Signature header. ## ShipStation Integration The ShipStation API is REST-based. Authentication uses API key and API secret in the Authorization header. Endpoints cover orders, shipments, carriers, and warehouses. Poll for new orders or use webhooks if available for your plan. Batch operations are supported for bulk label creation. ## Twilio SMS Integration Twilio's REST API requires Account SID and Auth Token. The Messaging API endpoint is /2010-04-01/Accounts/{AccountSid}/Messages.json. For two-way messaging, configure a webhook URL to receive incoming messages. Consider using a queue for high-volume outbound SMS to avoid rate limits. # PentaCodes Technical Reference and Integration Documentation # Version 1.0 | Last Updated March 2025 # This document contains technical reference material for common integrations and deployment procedures. ## QuickBooks Online Integration The QuickBooks Online API uses OAuth 2.0 for authentication. You will need to register your application in the Intuit Developer Portal to obtain client credentials. The base URL for the API is https://quickbooks.api.intuit.com/v3/company/{realmId}. Common endpoints include /invoice, /customer, /payment, and /bill. Rate limits apply: 500 requests per minute for production apps. Always implement exponential backoff for 429 responses. ## Stripe Payment Integration Stripe provides both client-side (Stripe.js) and server-side APIs. For PCI compliance, never pass raw card numbers through your server—use Stripe Elements or the Payment Intents API. Webhooks are essential for handling asynchronous events like payment succeeded or subscription renewed. Configure your webhook endpoint to verify signatures using the Stripe-Signature header. ## ShipStation Integration The ShipStation API is REST-based. Authentication uses API key and API secret in the Authorization header. Endpoints cover orders, shipments, carriers, and warehouses. Poll for new orders or use webhooks if available for your plan. Batch operations are supported for bulk label creation. ## Twilio SMS Integration Twilio's REST API requires Account SID and Auth Token. The Messaging API endpoint is /2010-04-01/Accounts/{AccountSid}/Messages.json. For two-way messaging, configure a webhook URL to receive incoming messages. Consider using a queue for high-volume outbound SMS to avoid rate limits. # PentaCodes Technical Reference and Integration Documentation # Version 1.0 | Last Updated March 2025 # This document contains technical reference material for common integrations and deployment procedures. ## QuickBooks Online Integration The QuickBooks Online API uses OAuth 2.0 for authentication. You will need to register your application in the Intuit Developer Portal to obtain client credentials. The base URL for the API is https://quickbooks.api.intuit.com/v3/company/{realmId}. Common endpoints include /invoice, /customer, /payment, and /bill. Rate limits apply: 500 requests per minute for production apps. Always implement exponential backoff for 429 responses. ## Stripe Payment Integration Stripe provides both client-side (Stripe.js) and server-side APIs. For PCI compliance, never pass raw card numbers through your server—use Stripe Elements or the Payment Intents API. Webhooks are essential for handling asynchronous events like payment succeeded or subscription renewed. Configure your webhook endpoint to verify signatures using the Stripe-Signature header. ## ShipStation Integration The ShipStation API is REST-based. Authentication uses API key and API secret in the Authorization header. Endpoints cover orders, shipments, carriers, and warehouses. Poll for new orders or use webhooks if available for your plan. Batch operations are supported for bulk label creation. ## Twilio SMS Integration Twilio's REST API requires Account SID and Auth Token. The Messaging API endpoint is /2010-04-01/Accounts/{AccountSid}/Messages.json. For two-way messaging, configure a webhook URL to receive incoming messages. Consider using a queue for high-volume outbound SMS to avoid rate limits. # PentaCodes Technical Reference and Integration Documentation # Version 1.0 | Last Updated March 2025 # This document contains technical reference material for common integrations and deployment procedures. ## QuickBooks Online Integration The QuickBooks Online API uses OAuth 2.0 for authentication. You will need to register your application in the Intuit Developer Portal to obtain client credentials. The base URL for the API is https://quickbooks.api.intuit.com/v3/company/{realmId}. Common endpoints include /invoice, /customer, /payment, and /bill. Rate limits apply: 500 requests per minute for production apps. Always implement exponential backoff for 429 responses. ## Stripe Payment Integration Stripe provides both client-side (Stripe.js) and server-side APIs. For PCI compliance, never pass raw card numbers through your server—use Stripe Elements or the Payment Intents API. Webhooks are essential for handling asynchronous events like payment succeeded or subscription renewed. Configure your webhook endpoint to verify signatures using the Stripe-Signature header. ## ShipStation Integration The ShipStation API is REST-based. Authentication uses API key and API secret in the Authorization header. Endpoints cover orders, shipments, carriers, and warehouses. Poll for new orders or use webhooks if available for your plan. Batch operations are supported for bulk label creation. ## Twilio SMS Integration Twilio's REST API requires Account SID and Auth Token. The Messaging API endpoint is /2010-04-01/Accounts/{AccountSid}/Messages.json. For two-way messaging, configure a webhook URL to receive incoming messages. Consider using a queue for high-volume outbound SMS to avoid rate limits. # PentaCodes Technical Reference and Integration Documentation # Version 1.0 | Last Updated March 2025 # This document contains technical reference material for common integrations and deployment procedures. ## QuickBooks Online Integration The QuickBooks Online API uses OAuth 2.0 for authentication. You will need to register your application in the Intuit Developer Portal to obtain client credentials. The base URL for the API is https://quickbooks.api.intuit.com/v3/company/{realmId}. Common endpoints include /invoice, /customer, /payment, and /bill. Rate limits apply: 500 requests per minute for production apps. Always implement exponential backoff for 429 responses. ## Stripe Payment Integration Stripe provides both client-side (Stripe.js) and server-side APIs. For PCI compliance, never pass raw card numbers through your server—use Stripe Elements or the Payment Intents API. Webhooks are essential for handling asynchronous events like payment succeeded or subscription renewed. Configure your webhook endpoint to verify signatures using the Stripe-Signature header. ## ShipStation Integration The ShipStation API is REST-based. Authentication uses API key and API secret in the Authorization header. Endpoints cover orders, shipments, carriers, and warehouses. Poll for new orders or use webhooks if available for your plan. Batch operations are supported for bulk label creation. ## Twilio SMS Integration Twilio's REST API requires Account SID and Auth Token. The Messaging API endpoint is /2010-04-01/Accounts/{AccountSid}/Messages.json. For two-way messaging, configure a webhook URL to receive incoming messages. Consider using a queue for high-volume outbound SMS to avoid rate limits. # PentaCodes Technical Reference and Integration Documentation # Version 1.0 | Last Updated March 2025 # This document contains technical reference material for common integrations and deployment procedures. ## QuickBooks Online Integration The QuickBooks Online API uses OAuth 2.0 for authentication. You will need to register your application in the Intuit Developer Portal to obtain client credentials. The base URL for the API is https://quickbooks.api.intuit.com/v3/company/{realmId}. Common endpoints include /invoice, /customer, /payment, and /bill. Rate limits apply: 500 requests per minute for production apps. Always implement exponential backoff for 429 responses. ## Stripe Payment Integration Stripe provides both client-side (Stripe.js) and server-side APIs. For PCI compliance, never pass raw card numbers through your server—use Stripe Elements or the Payment Intents API. Webhooks are essential for handling asynchronous events like payment succeeded or subscription renewed. Configure your webhook endpoint to verify signatures using the Stripe-Signature header. ## ShipStation Integration The ShipStation API is REST-based. Authentication uses API key and API secret in the Authorization header. Endpoints cover orders, shipments, carriers, and warehouses. Poll for new orders or use webhooks if available for your plan. Batch operations are supported for bulk label creation. ## Twilio SMS Integration Twilio's REST API requires Account SID and Auth Token. The Messaging API endpoint is /2010-04-01/Accounts/{AccountSid}/Messages.json. For two-way messaging, configure a webhook URL to receive incoming messages. Consider using a queue for high-volume outbound SMS to avoid rate limits. # PentaCodes Technical Reference and Integration Documentation # Version 1.0 | Last Updated March 2025 # This document contains technical reference material for common integrations and deployment procedures. ## QuickBooks Online Integration The QuickBooks Online API uses OAuth 2.0 for authentication. You will need to register your application in the Intuit Developer Portal to obtain client credentials. The base URL for the API is https://quickbooks.api.intuit.com/v3/company/{realmId}. Common endpoints include /invoice, /customer, /payment, and /bill. Rate limits apply: 500 requests per minute for production apps. Always implement exponential backoff for 429 responses. ## Stripe Payment Integration Stripe provides both client-side (Stripe.js) and server-side APIs. For PCI compliance, never pass raw card numbers through your server—use Stripe Elements or the Payment Intents API. Webhooks are essential for handling asynchronous events like payment succeeded or subscription renewed. Configure your webhook endpoint to verify signatures using the Stripe-Signature header. ## ShipStation Integration The ShipStation API is REST-based. Authentication uses API key and API secret in the Authorization header. Endpoints cover orders, shipments, carriers, and warehouses. Poll for new orders or use webhooks if available for your plan. Batch operations are supported for bulk label creation. ## Twilio SMS Integration Twilio's REST API requires Account SID and Auth Token. The Messaging API endpoint is /2010-04-01/Accounts/{AccountSid}/Messages.json. For two-way messaging, configure a webhook URL to receive incoming messages. Consider using a queue for high-volume outbound SMS to avoid rate limits. # PentaCodes Technical Reference and Integration Documentation # Version 1.0 | Last Updated March 2025 # This document contains technical reference material for common integrations and deployment procedures. ## QuickBooks Online Integration The QuickBooks Online API uses OAuth 2.0 for authentication. You will need to register your application in the Intuit Developer Portal to obtain client credentials. The base URL for the API is https://quickbooks.api.intuit.com/v3/company/{realmId}. Common endpoints include /invoice, /customer, /payment, and /bill. Rate limits apply: 500 requests per minute for production apps. Always implement exponential backoff for 429 responses. ## Stripe Payment Integration Stripe provides both client-side (Stripe.js) and server-side APIs. For PCI compliance, never pass raw card numbers through your server—use Stripe Elements or the Payment Intents API. Webhooks are essential for handling asynchronous events like payment succeeded or subscription renewed. Configure your webhook endpoint to verify signatures using the Stripe-Signature header. ## ShipStation Integration The ShipStation API is REST-based. Authentication uses API key and API secret in the Authorization header. Endpoints cover orders, shipments, carriers, and warehouses. Poll for new orders or use webhooks if available for your plan. Batch operations are supported for bulk label creation. ## Twilio SMS Integration Twilio's REST API requires Account SID and Auth Token. The Messaging API endpoint is /2010-04-01/Accounts/{AccountSid}/Messages.json. For two-way messaging, configure a webhook URL to receive incoming messages. Consider using a queue for high-volume outbound SMS to avoid rate limits. # PentaCodes Technical Reference and Integration Documentation # Version 1.0 | Last Updated March 2025 # This document contains technical reference material for common integrations and deployment procedures. ## QuickBooks Online Integration The QuickBooks Online API uses OAuth 2.0 for authentication. You will need to register your application in the Intuit Developer Portal to obtain client credentials. The base URL for the API is https://quickbooks.api.intuit.com/v3/company/{realmId}. Common endpoints include /invoice, /customer, /payment, and /bill. Rate limits apply: 500 requests per minute for production apps. Always implement exponential backoff for 429 responses. ## Stripe Payment Integration Stripe provides both client-side (Stripe.js) and server-side APIs. For PCI compliance, never pass raw card numbers through your server—use Stripe Elements or the Payment Intents API. Webhooks are essential for handling asynchronous events like payment succeeded or subscription renewed. Configure your webhook endpoint to verify signatures using the Stripe-Signature header. ## ShipStation Integration The ShipStation API is REST-based. Authentication uses API key and API secret in the Authorization header. Endpoints cover orders, shipments, carriers, and warehouses. Poll for new orders or use webhooks if available for your plan. Batch operations are supported for bulk label creation. ## Twilio SMS Integration Twilio's REST API requires Account SID and Auth Token. The Messaging API endpoint is /2010-04-01/Accounts/{AccountSid}/Messages.json. For two-way messaging, configure a webhook URL to receive incoming messages. Consider using a queue for high-volume outbound SMS to avoid rate limits. # PentaCodes Technical Reference and Integration Documentation # Version 1.0 | Last Updated March 2025 # This document contains technical reference material for common integrations and deployment procedures. ## QuickBooks Online Integration The QuickBooks Online API uses OAuth 2.0 for authentication. You will need to register your application in the Intuit Developer Portal to obtain client credentials. The base URL for the API is https://quickbooks.api.intuit.com/v3/company/{realmId}. Common endpoints include /invoice, /customer, /payment, and /bill. Rate limits apply: 500 requests per minute for production apps. Always implement exponential backoff for 429 responses. ## Stripe Payment Integration Stripe provides both client-side (Stripe.js) and server-side APIs. For PCI compliance, never pass raw card numbers through your server—use Stripe Elements or the Payment Intents API. Webhooks are essential for handling asynchronous events like payment succeeded or subscription renewed. Configure your webhook endpoint to verify signatures using the Stripe-Signature header. ## ShipStation Integration The ShipStation API is REST-based. Authentication uses API key and API secret in the Authorization header. Endpoints cover orders, shipments, carriers, and warehouses. Poll for new orders or use webhooks if available for your plan. Batch operations are supported for bulk label creation. ## Twilio SMS Integration Twilio's REST API requires Account SID and Auth Token. The Messaging API endpoint is /2010-04-01/Accounts/{AccountSid}/Messages.json. For two-way messaging, configure a webhook URL to receive incoming messages. Consider using a queue for high-volume outbound SMS to avoid rate limits. # PentaCodes Technical Reference and Integration Documentation # Version 1.0 | Last Updated March 2025 # This document contains technical reference material for common integrations and deployment procedures. ## QuickBooks Online Integration The QuickBooks Online API uses OAuth 2.0 for authentication. You will need to register your application in the Intuit Developer Portal to obtain client credentials. The base URL for the API is https://quickbooks.api.intuit.com/v3/company/{realmId}. Common endpoints include /invoice, /customer, /payment, and /bill. Rate limits apply: 500 requests per minute for production apps. Always implement exponential backoff for 429 responses. ## Stripe Payment Integration Stripe provides both client-side (Stripe.js) and server-side APIs. For PCI compliance, never pass raw card numbers through your server—use Stripe Elements or the Payment Intents API. Webhooks are essential for handling asynchronous events like payment succeeded or subscription renewed. Configure your webhook endpoint to verify signatures using the Stripe-Signature header. ## ShipStation Integration The ShipStation API is REST-based. Authentication uses API key and API secret in the Authorization header. Endpoints cover orders, shipments, carriers, and warehouses. Poll for new orders or use webhooks if available for your plan. Batch operations are supported for bulk label creation. ## Twilio SMS Integration Twilio's REST API requires Account SID and Auth Token. The Messaging API endpoint is /2010-04-01/Accounts/{AccountSid}/Messages.json. For two-way messaging, configure a webhook URL to receive incoming messages. Consider using a queue for high-volume outbound SMS to avoid rate limits. # PentaCodes Technical Reference and Integration Documentation # Version 1.0 | Last Updated March 2025 # This document contains technical reference material for common integrations and deployment procedures. ## QuickBooks Online Integration The QuickBooks Online API uses OAuth 2.0 for authentication. You will need to register your application in the Intuit Developer Portal to obtain client credentials. The base URL for the API is https://quickbooks.api.intuit.com/v3/company/{realmId}. Common endpoints include /invoice, /customer, /payment, and /bill. Rate limits apply: 500 requests per minute for production apps. Always implement exponential backoff for 429 responses. ## Stripe Payment Integration Stripe provides both client-side (Stripe.js) and server-side APIs. For PCI compliance, never pass raw card numbers through your server—use Stripe Elements or the Payment Intents API. Webhooks are essential for handling asynchronous events like payment succeeded or subscription renewed. Configure your webhook endpoint to verify signatures using the Stripe-Signature header. ## ShipStation Integration The ShipStation API is REST-based. Authentication uses API key and API secret in the Authorization header. Endpoints cover orders, shipments, carriers, and warehouses. Poll for new orders or use webhooks if available for your plan. Batch operations are supported for bulk label creation. ## Twilio SMS Integration Twilio's REST API requires Account SID and Auth Token. The Messaging API endpoint is /2010-04-01/Accounts/{AccountSid}/Messages.json. For two-way messaging, configure a webhook URL to receive incoming messages. Consider using a queue for high-volume outbound SMS to avoid rate limits. # PentaCodes Technical Reference and Integration Documentation # Version 1.0 | Last Updated March 2025 # This document contains technical reference material for common integrations and deployment procedures. ## QuickBooks Online Integration The QuickBooks Online API uses OAuth 2.0 for authentication. You will need to register your application in the Intuit Developer Portal to obtain client credentials. The base URL for the API is https://quickbooks.api.intuit.com/v3/company/{realmId}. Common endpoints include /invoice, /customer, /payment, and /bill. Rate limits apply: 500 requests per minute for production apps. Always implement exponential backoff for 429 responses. ## Stripe Payment Integration Stripe provides both client-side (Stripe.js) and server-side APIs. For PCI compliance, never pass raw card numbers through your server—use Stripe Elements or the Payment Intents API. Webhooks are essential for handling asynchronous events like payment succeeded or subscription renewed. Configure your webhook endpoint to verify signatures using the Stripe-Signature header. ## ShipStation Integration The ShipStation API is REST-based. Authentication uses API key and API secret in the Authorization header. Endpoints cover orders, shipments, carriers, and warehouses. Poll for new orders or use webhooks if available for your plan. Batch operations are supported for bulk label creation. ## Twilio SMS Integration Twilio's REST API requires Account SID and Auth Token. The Messaging API endpoint is /2010-04-01/Accounts/{AccountSid}/Messages.json. For two-way messaging, configure a webhook URL to receive incoming messages. Consider using a queue for high-volume outbound SMS to avoid rate limits. # PentaCodes Technical Reference and Integration Documentation # Version 1.0 | Last Updated March 2025 # This document contains technical reference material for common integrations and deployment procedures. ## QuickBooks Online Integration The QuickBooks Online API uses OAuth 2.0 for authentication. You will need to register your application in the Intuit Developer Portal to obtain client credentials. The base URL for the API is https://quickbooks.api.intuit.com/v3/company/{realmId}. Common endpoints include /invoice, /customer, /payment, and /bill. Rate limits apply: 500 requests per minute for production apps. Always implement exponential backoff for 429 responses. ## Stripe Payment Integration Stripe provides both client-side (Stripe.js) and server-side APIs. For PCI compliance, never pass raw card numbers through your server—use Stripe Elements or the Payment Intents API. Webhooks are essential for handling asynchronous events like payment succeeded or subscription renewed. Configure your webhook endpoint to verify signatures using the Stripe-Signature header. ## ShipStation Integration The ShipStation API is REST-based. Authentication uses API key and API secret in the Authorization header. Endpoints cover orders, shipments, carriers, and warehouses. Poll for new orders or use webhooks if available for your plan. Batch operations are supported for bulk label creation. ## Twilio SMS Integration Twilio's REST API requires Account SID and Auth Token. The Messaging API endpoint is /2010-04-01/Accounts/{AccountSid}/Messages.json. For two-way messaging, configure a webhook URL to receive incoming messages. Consider using a queue for high-volume outbound SMS to avoid rate limits. # PentaCodes Technical Reference and Integration Documentation # Version 1.0 | Last Updated March 2025 # This document contains technical reference material for common integrations and deployment procedures. ## QuickBooks Online Integration The QuickBooks Online API uses OAuth 2.0 for authentication. You will need to register your application in the Intuit Developer Portal to obtain client credentials. The base URL for the API is https://quickbooks.api.intuit.com/v3/company/{realmId}. Common endpoints include /invoice, /customer, /payment, and /bill. Rate limits apply: 500 requests per minute for production apps. Always implement exponential backoff for 429 responses. ## Stripe Payment Integration Stripe provides both client-side (Stripe.js) and server-side APIs. For PCI compliance, never pass raw card numbers through your server—use Stripe Elements or the Payment Intents API. Webhooks are essential for handling asynchronous events like payment succeeded or subscription renewed. Configure your webhook endpoint to verify signatures using the Stripe-Signature header. ## ShipStation Integration The ShipStation API is REST-based. Authentication uses API key and API secret in the Authorization header. Endpoints cover orders, shipments, carriers, and warehouses. Poll for new orders or use webhooks if available for your plan. Batch operations are supported for bulk label creation. ## Twilio SMS Integration Twilio's REST API requires Account SID and Auth Token. The Messaging API endpoint is /2010-04-01/Accounts/{AccountSid}/Messages.json. For two-way messaging, configure a webhook URL to receive incoming messages. Consider using a queue for high-volume outbound SMS to avoid rate limits. # PentaCodes Technical Reference and Integration Documentation # Version 1.0 | Last Updated March 2025 # This document contains technical reference material for common integrations and deployment procedures. ## QuickBooks Online Integration The QuickBooks Online API uses OAuth 2.0 for authentication. You will need to register your application in the Intuit Developer Portal to obtain client credentials. The base URL for the API is https://quickbooks.api.intuit.com/v3/company/{realmId}. Common endpoints include /invoice, /customer, /payment, and /bill. Rate limits apply: 500 requests per minute for production apps. Always implement exponential backoff for 429 responses. ## Stripe Payment Integration Stripe provides both client-side (Stripe.js) and server-side APIs. For PCI compliance, never pass raw card numbers through your server—use Stripe Elements or the Payment Intents API. Webhooks are essential for handling asynchronous events like payment succeeded or subscription renewed. Configure your webhook endpoint to verify signatures using the Stripe-Signature header. ## ShipStation Integration The ShipStation API is REST-based. Authentication uses API key and API secret in the Authorization header. Endpoints cover orders, shipments, carriers, and warehouses. Poll for new orders or use webhooks if available for your plan. Batch operations are supported for bulk label creation. ## Twilio SMS Integration Twilio's REST API requires Account SID and Auth Token. The Messaging API endpoint is /2010-04-01/Accounts/{AccountSid}/Messages.json. For two-way messaging, configure a webhook URL to receive incoming messages. Consider using a queue for high-volume outbound SMS to avoid rate limits. # PentaCodes Technical Reference and Integration Documentation # Version 1.0 | Last Updated March 2025 # This document contains technical reference material for common integrations and deployment procedures. ## QuickBooks Online Integration The QuickBooks Online API uses OAuth 2.0 for authentication. You will need to register your application in the Intuit Developer Portal to obtain client credentials. The base URL for the API is https://quickbooks.api.intuit.com/v3/company/{realmId}. Common endpoints include /invoice, /customer, /payment, and /bill. Rate limits apply: 500 requests per minute for production apps. Always implement exponential backoff for 429 responses. ## Stripe Payment Integration Stripe provides both client-side (Stripe.js) and server-side APIs. For PCI compliance, never pass raw card numbers through your server—use Stripe Elements or the Payment Intents API. Webhooks are essential for handling asynchronous events like payment succeeded or subscription renewed. Configure your webhook endpoint to verify signatures using the Stripe-Signature header. ## ShipStation Integration The ShipStation API is REST-based. Authentication uses API key and API secret in the Authorization header. Endpoints cover orders, shipments, carriers, and warehouses. Poll for new orders or use webhooks if available for your plan. Batch operations are supported for bulk label creation. ## Twilio SMS Integration Twilio's REST API requires Account SID and Auth Token. The Messaging API endpoint is /2010-04-01/Accounts/{AccountSid}/Messages.json. For two-way messaging, configure a webhook URL to receive incoming messages. Consider using a queue for high-volume outbound SMS to avoid rate limits. # PentaCodes Technical Reference and Integration Documentation # Version 1.0 | Last Updated March 2025 # This document contains technical reference material for common integrations and deployment procedures. ## QuickBooks Online Integration The QuickBooks Online API uses OAuth 2.0 for authentication. You will need to register your application in the Intuit Developer Portal to obtain client credentials. The base URL for the API is https://quickbooks.api.intuit.com/v3/company/{realmId}. Common endpoints include /invoice, /customer, /payment, and /bill. Rate limits apply: 500 requests per minute for production apps. Always implement exponential backoff for 429 responses. ## Stripe Payment Integration Stripe provides both client-side (Stripe.js) and server-side APIs. For PCI compliance, never pass raw card numbers through your server—use Stripe Elements or the Payment Intents API. Webhooks are essential for handling asynchronous events like payment succeeded or subscription renewed. Configure your webhook endpoint to verify signatures using the Stripe-Signature header. ## ShipStation Integration The ShipStation API is REST-based. Authentication uses API key and API secret in the Authorization header. Endpoints cover orders, shipments, carriers, and warehouses. Poll for new orders or use webhooks if available for your plan. Batch operations are supported for bulk label creation. ## Twilio SMS Integration Twilio's REST API requires Account SID and Auth Token. The Messaging API endpoint is /2010-04-01/Accounts/{AccountSid}/Messages.json. For two-way messaging, configure a webhook URL to receive incoming messages. Consider using a queue for high-volume outbound SMS to avoid rate limits. # PentaCodes Technical Reference and Integration Documentation # Version 1.0 | Last Updated March 2025 # This document contains technical reference material for common integrations and deployment procedures. ## QuickBooks Online Integration The QuickBooks Online API uses OAuth 2.0 for authentication. You will need to register your application in the Intuit Developer Portal to obtain client credentials. The base URL for the API is https://quickbooks.api.intuit.com/v3/company/{realmId}. Common endpoints include /invoice, /customer, /payment, and /bill. Rate limits apply: 500 requests per minute for production apps. Always implement exponential backoff for 429 responses. ## Stripe Payment Integration Stripe provides both client-side (Stripe.js) and server-side APIs. For PCI compliance, never pass raw card numbers through your server—use Stripe Elements or the Payment Intents API. Webhooks are essential for handling asynchronous events like payment succeeded or subscription renewed. Configure your webhook endpoint to verify signatures using the Stripe-Signature header. ## ShipStation Integration The ShipStation API is REST-based. Authentication uses API key and API secret in the Authorization header. Endpoints cover orders, shipments, carriers, and warehouses. Poll for new orders or use webhooks if available for your plan. Batch operations are supported for bulk label creation. ## Twilio SMS Integration Twilio's REST API requires Account SID and Auth Token. The Messaging API endpoint is /2010-04-01/Accounts/{AccountSid}/Messages.json. For two-way messaging, configure a webhook URL to receive incoming messages. Consider using a queue for high-volume outbound SMS to avoid rate limits. # PentaCodes Technical Reference and Integration Documentation # Version 1.0 | Last Updated March 2025 # This document contains technical reference material for common integrations and deployment procedures. ## QuickBooks Online Integration The QuickBooks Online API uses OAuth 2.0 for authentication. You will need to register your application in the Intuit Developer Portal to obtain client credentials. The base URL for the API is https://quickbooks.api.intuit.com/v3/company/{realmId}. Common endpoints include /invoice, /customer, /payment, and /bill. Rate limits apply: 500 requests per minute for production apps. Always implement exponential backoff for 429 responses. ## Stripe Payment Integration Stripe provides both client-side (Stripe.js) and server-side APIs. For PCI compliance, never pass raw card numbers through your server—use Stripe Elements or the Payment Intents API. Webhooks are essential for handling asynchronous events like payment succeeded or subscription renewed. Configure your webhook endpoint to verify signatures using the Stripe-Signature header. ## ShipStation Integration The ShipStation API is REST-based. Authentication uses API key and API secret in the Authorization header. Endpoints cover orders, shipments, carriers, and warehouses. Poll for new orders or use webhooks if available for your plan. Batch operations are supported for bulk label creation. ## Twilio SMS Integration Twilio's REST API requires Account SID and Auth Token. The Messaging API endpoint is /2010-04-01/Accounts/{AccountSid}/Messages.json. For two-way messaging, configure a webhook URL to receive incoming messages. Consider using a queue for high-volume outbound SMS to avoid rate limits. # PentaCodes Technical Reference and Integration Documentation # Version 1.0 | Last Updated March 2025 # This document contains technical reference material for common integrations and deployment procedures. ## QuickBooks Online Integration The QuickBooks Online API uses OAuth 2.0 for authentication. You will need to register your application in the Intuit Developer Portal to obtain client credentials. The base URL for the API is https://quickbooks.api.intuit.com/v3/company/{realmId}. Common endpoints include /invoice, /customer, /payment, and /bill. Rate limits apply: 500 requests per minute for production apps. Always implement exponential backoff for 429 responses. ## Stripe Payment Integration Stripe provides both client-side (Stripe.js) and server-side APIs. For PCI compliance, never pass raw card numbers through your server—use Stripe Elements or the Payment Intents API. Webhooks are essential for handling asynchronous events like payment succeeded or subscription renewed. Configure your webhook endpoint to verify signatures using the Stripe-Signature header. ## ShipStation Integration The ShipStation API is REST-based. Authentication uses API key and API secret in the Authorization header. Endpoints cover orders, shipments, carriers, and warehouses. Poll for new orders or use webhooks if available for your plan. Batch operations are supported for bulk label creation. ## Twilio SMS Integration Twilio's REST API requires Account SID and Auth Token. The Messaging API endpoint is /2010-04-01/Accounts/{AccountSid}/Messages.json. For two-way messaging, configure a webhook URL to receive incoming messages. Consider using a queue for high-volume outbound SMS to avoid rate limits. # PentaCodes Technical Reference and Integration Documentation # Version 1.0 | Last Updated March 2025 # This document contains technical reference material for common integrations and deployment procedures. ## QuickBooks Online Integration The QuickBooks Online API uses OAuth 2.0 for authentication. You will need to register your application in the Intuit Developer Portal to obtain client credentials. The base URL for the API is https://quickbooks.api.intuit.com/v3/company/{realmId}. Common endpoints include /invoice, /customer, /payment, and /bill. Rate limits apply: 500 requests per minute for production apps. Always implement exponential backoff for 429 responses. ## Stripe Payment Integration Stripe provides both client-side (Stripe.js) and server-side APIs. For PCI compliance, never pass raw card numbers through your server—use Stripe Elements or the Payment Intents API. Webhooks are essential for handling asynchronous events like payment succeeded or subscription renewed. Configure your webhook endpoint to verify signatures using the Stripe-Signature header. ## ShipStation Integration The ShipStation API is REST-based. Authentication uses API key and API secret in the Authorization header. Endpoints cover orders, shipments, carriers, and warehouses. Poll for new orders or use webhooks if available for your plan. Batch operations are supported for bulk label creation. ## Twilio SMS Integration Twilio's REST API requires Account SID and Auth Token. The Messaging API endpoint is /2010-04-01/Accounts/{AccountSid}/Messages.json. For two-way messaging, configure a webhook URL to receive incoming messages. Consider using a queue for high-volume outbound SMS to avoid rate limits. # PentaCodes Technical Reference and Integration Documentation # Version 1.0 | Last Updated March 2025 # This document contains technical reference material for common integrations and deployment procedures. ## QuickBooks Online Integration The QuickBooks Online API uses OAuth 2.0 for authentication. You will need to register your application in the Intuit Developer Portal to obtain client credentials. The base URL for the API is https://quickbooks.api.intuit.com/v3/company/{realmId}. Common endpoints include /invoice, /customer, /payment, and /bill. Rate limits apply: 500 requests per minute for production apps. Always implement exponential backoff for 429 responses. ## Stripe Payment Integration Stripe provides both client-side (Stripe.js) and server-side APIs. For PCI compliance, never pass raw card numbers through your server—use Stripe Elements or the Payment Intents API. Webhooks are essential for handling asynchronous events like payment succeeded or subscription renewed. Configure your webhook endpoint to verify signatures using the Stripe-Signature header. ## ShipStation Integration The ShipStation API is REST-based. Authentication uses API key and API secret in the Authorization header. Endpoints cover orders, shipments, carriers, and warehouses. Poll for new orders or use webhooks if available for your plan. Batch operations are supported for bulk label creation. ## Twilio SMS Integration Twilio's REST API requires Account SID and Auth Token. The Messaging API endpoint is /2010-04-01/Accounts/{AccountSid}/Messages.json. For two-way messaging, configure a webhook URL to receive incoming messages. Consider using a queue for high-volume outbound SMS to avoid rate limits. # PentaCodes Technical Reference and Integration Documentation # Version 1.0 | Last Updated March 2025 # This document contains technical reference material for common integrations and deployment procedures. ## QuickBooks Online Integration The QuickBooks Online API uses OAuth 2.0 for authentication. You will need to register your application in the Intuit Developer Portal to obtain client credentials. The base URL for the API is https://quickbooks.api.intuit.com/v3/company/{realmId}. Common endpoints include /invoice, /customer, /payment, and /bill. Rate limits apply: 500 requests per minute for production apps. Always implement exponential backoff for 429 responses. ## Stripe Payment Integration Stripe provides both client-side (Stripe.js) and server-side APIs. For PCI compliance, never pass raw card numbers through your server—use Stripe Elements or the Payment Intents API. Webhooks are essential for handling asynchronous events like payment succeeded or subscription renewed. Configure your webhook endpoint to verify signatures using the Stripe-Signature header. ## ShipStation Integration The ShipStation API is REST-based. Authentication uses API key and API secret in the Authorization header. Endpoints cover orders, shipments, carriers, and warehouses. Poll for new orders or use webhooks if available for your plan. Batch operations are supported for bulk label creation. ## Twilio SMS Integration Twilio's REST API requires Account SID and Auth Token. The Messaging API endpoint is /2010-04-01/Accounts/{AccountSid}/Messages.json. For two-way messaging, configure a webhook URL to receive incoming messages. Consider using a queue for high-volume outbound SMS to avoid rate limits. # PentaCodes Technical Reference and Integration Documentation # Version 1.0 | Last Updated March 2025 # This document contains technical reference material for common integrations and deployment procedures. ## QuickBooks Online Integration The QuickBooks Online API uses OAuth 2.0 for authentication. You will need to register your application in the Intuit Developer Portal to obtain client credentials. The base URL for the API is https://quickbooks.api.intuit.com/v3/company/{realmId}. Common endpoints include /invoice, /customer, /payment, and /bill. Rate limits apply: 500 requests per minute for production apps. Always implement exponential backoff for 429 responses. ## Stripe Payment Integration Stripe provides both client-side (Stripe.js) and server-side APIs. For PCI compliance, never pass raw card numbers through your server—use Stripe Elements or the Payment Intents API. Webhooks are essential for handling asynchronous events like payment succeeded or subscription renewed. Configure your webhook endpoint to verify signatures using the Stripe-Signature header. ## ShipStation Integration The ShipStation API is REST-based. Authentication uses API key and API secret in the Authorization header. Endpoints cover orders, shipments, carriers, and warehouses. Poll for new orders or use webhooks if available for your plan. Batch operations are supported for bulk label creation. ## Twilio SMS Integration Twilio's REST API requires Account SID and Auth Token. The Messaging API endpoint is /2010-04-01/Accounts/{AccountSid}/Messages.json. For two-way messaging, configure a webhook URL to receive incoming messages. Consider using a queue for high-volume outbound SMS to avoid rate limits. # PentaCodes Technical Reference and Integration Documentation # Version 1.0 | Last Updated March 2025 # This document contains technical reference material for common integrations and deployment procedures. ## QuickBooks Online Integration The QuickBooks Online API uses OAuth 2.0 for authentication. You will need to register your application in the Intuit Developer Portal to obtain client credentials. The base URL for the API is https://quickbooks.api.intuit.com/v3/company/{realmId}. Common endpoints include /invoice, /customer, /payment, and /bill. Rate limits apply: 500 requests per minute for production apps. Always implement exponential backoff for 429 responses. ## Stripe Payment Integration Stripe provides both client-side (Stripe.js) and server-side APIs. For PCI compliance, never pass raw card numbers through your server—use Stripe Elements or the Payment Intents API. Webhooks are essential for handling asynchronous events like payment succeeded or subscription renewed. Configure your webhook endpoint to verify signatures using the Stripe-Signature header. ## ShipStation Integration The ShipStation API is REST-based. Authentication uses API key and API secret in the Authorization header. Endpoints cover orders, shipments, carriers, and warehouses. Poll for new orders or use webhooks if available for your plan. Batch operations are supported for bulk label creation. ## Twilio SMS Integration Twilio's REST API requires Account SID and Auth Token. The Messaging API endpoint is /2010-04-01/Accounts/{AccountSid}/Messages.json. For two-way messaging, configure a webhook URL to receive incoming messages. Consider using a queue for high-volume outbound SMS to avoid rate limits. # PentaCodes Technical Reference and Integration Documentation # Version 1.0 | Last Updated March 2025 # This document contains technical reference material for common integrations and deployment procedures. ## QuickBooks Online Integration The QuickBooks Online API uses OAuth 2.0 for authentication. You will need to register your application in the Intuit Developer Portal to obtain client credentials. The base URL for the API is https://quickbooks.api.intuit.com/v3/company/{realmId}. Common endpoints include /invoice, /customer, /payment, and /bill. Rate limits apply: 500 requests per minute for production apps. Always implement exponential backoff for 429 responses. ## Stripe Payment Integration Stripe provides both client-side (Stripe.js) and server-side APIs. For PCI compliance, never pass raw card numbers through your server—use Stripe Elements or the Payment Intents API. Webhooks are essential for handling asynchronous events like payment succeeded or subscription renewed. Configure your webhook endpoint to verify signatures using the Stripe-Signature header. ## ShipStation Integration The ShipStation API is REST-based. Authentication uses API key and API secret in the Authorization header. Endpoints cover orders, shipments, carriers, and warehouses. Poll for new orders or use webhooks if available for your plan. Batch operations are supported for bulk label creation. ## Twilio SMS Integration Twilio's REST API requires Account SID and Auth Token. The Messaging API endpoint is /2010-04-01/Accounts/{AccountSid}/Messages.json. For two-way messaging, configure a webhook URL to receive incoming messages. Consider using a queue for high-volume outbound SMS to avoid rate limits. # PentaCodes Technical Reference and Integration Documentation # Version 1.0 | Last Updated March 2025 # This document contains technical reference material for common integrations and deployment procedures. ## QuickBooks Online Integration The QuickBooks Online API uses OAuth 2.0 for authentication. You will need to register your application in the Intuit Developer Portal to obtain client credentials. The base URL for the API is https://quickbooks.api.intuit.com/v3/company/{realmId}. Common endpoints include /invoice, /customer, /payment, and /bill. Rate limits apply: 500 requests per minute for production apps. Always implement exponential backoff for 429 responses. ## Stripe Payment Integration Stripe provides both client-side (Stripe.js) and server-side APIs. For PCI compliance, never pass raw card numbers through your server—use Stripe Elements or the Payment Intents API. Webhooks are essential for handling asynchronous events like payment succeeded or subscription renewed. Configure your webhook endpoint to verify signatures using the Stripe-Signature header. ## ShipStation Integration The ShipStation API is REST-based. Authentication uses API key and API secret in the Authorization header. Endpoints cover orders, shipments, carriers, and warehouses. Poll for new orders or use webhooks if available for your plan. Batch operations are supported for bulk label creation. ## Twilio SMS Integration Twilio's REST API requires Account SID and Auth Token. The Messaging API endpoint is /2010-04-01/Accounts/{AccountSid}/Messages.json. For two-way messaging, configure a webhook URL to receive incoming messages. Consider using a queue for high-volume outbound SMS to avoid rate limits. # PentaCodes Technical Reference and Integration Documentation # Version 1.0 | Last Updated March 2025 # This document contains technical reference material for common integrations and deployment procedures. ## QuickBooks Online Integration The QuickBooks Online API uses OAuth 2.0 for authentication. You will need to register your application in the Intuit Developer Portal to obtain client credentials. The base URL for the API is https://quickbooks.api.intuit.com/v3/company/{realmId}. Common endpoints include /invoice, /customer, /payment, and /bill. Rate limits apply: 500 requests per minute for production apps. Always implement exponential backoff for 429 responses. ## Stripe Payment Integration Stripe provides both client-side (Stripe.js) and server-side APIs. For PCI compliance, never pass raw card numbers through your server—use Stripe Elements or the Payment Intents API. Webhooks are essential for handling asynchronous events like payment succeeded or subscription renewed. Configure your webhook endpoint to verify signatures using the Stripe-Signature header. ## ShipStation Integration The ShipStation API is REST-based. Authentication uses API key and API secret in the Authorization header. Endpoints cover orders, shipments, carriers, and warehouses. Poll for new orders or use webhooks if available for your plan. Batch operations are supported for bulk label creation. ## Twilio SMS Integration Twilio's REST API requires Account SID and Auth Token. The Messaging API endpoint is /2010-04-01/Accounts/{AccountSid}/Messages.json. For two-way messaging, configure a webhook URL to receive incoming messages. Consider using a queue for high-volume outbound SMS to avoid rate limits. # PentaCodes Technical Reference and Integration Documentation # Version 1.0 | Last Updated March 2025 # This document contains technical reference material for common integrations and deployment procedures. ## QuickBooks Online Integration The QuickBooks Online API uses OAuth 2.0 for authentication. You will need to register your application in the Intuit Developer Portal to obtain client credentials. The base URL for the API is https://quickbooks.api.intuit.com/v3/company/{realmId}. Common endpoints include /invoice, /customer, /payment, and /bill. Rate limits apply: 500 requests per minute for production apps. Always implement exponential backoff for 429 responses. ## Stripe Payment Integration Stripe provides both client-side (Stripe.js) and server-side APIs. For PCI compliance, never pass raw card numbers through your server—use Stripe Elements or the Payment Intents API. Webhooks are essential for handling asynchronous events like payment succeeded or subscription renewed. Configure your webhook endpoint to verify signatures using the Stripe-Signature header. ## ShipStation Integration The ShipStation API is REST-based. Authentication uses API key and API secret in the Authorization header. Endpoints cover orders, shipments, carriers, and warehouses. Poll for new orders or use webhooks if available for your plan. Batch operations are supported for bulk label creation. ## Twilio SMS Integration Twilio's REST API requires Account SID and Auth Token. The Messaging API endpoint is /2010-04-01/Accounts/{AccountSid}/Messages.json. For two-way messaging, configure a webhook URL to receive incoming messages. Consider using a queue for high-volume outbound SMS to avoid rate limits. # PentaCodes Technical Reference and Integration Documentation # Version 1.0 | Last Updated March 2025 # This document contains technical reference material for common integrations and deployment procedures. ## QuickBooks Online Integration The QuickBooks Online API uses OAuth 2.0 for authentication. You will need to register your application in the Intuit Developer Portal to obtain client credentials. The base URL for the API is https://quickbooks.api.intuit.com/v3/company/{realmId}. Common endpoints include /invoice, /customer, /payment, and /bill. Rate limits apply: 500 requests per minute for production apps. Always implement exponential backoff for 429 responses. ## Stripe Payment Integration Stripe provides both client-side (Stripe.js) and server-side APIs. For PCI compliance, never pass raw card numbers through your server—use Stripe Elements or the Payment Intents API. Webhooks are essential for handling asynchronous events like payment succeeded or subscription renewed. Configure your webhook endpoint to verify signatures using the Stripe-Signature header. ## ShipStation Integration The ShipStation API is REST-based. Authentication uses API key and API secret in the Authorization header. Endpoints cover orders, shipments, carriers, and warehouses. Poll for new orders or use webhooks if available for your plan. Batch operations are supported for bulk label creation. ## Twilio SMS Integration Twilio's REST API requires Account SID and Auth Token. The Messaging API endpoint is /2010-04-01/Accounts/{AccountSid}/Messages.json. For two-way messaging, configure a webhook URL to receive incoming messages. Consider using a queue for high-volume outbound SMS to avoid rate limits. # PentaCodes Technical Reference and Integration Documentation # Version 1.0 | Last Updated March 2025 # This document contains technical reference material for common integrations and deployment procedures. ## QuickBooks Online Integration The QuickBooks Online API uses OAuth 2.0 for authentication. You will need to register your application in the Intuit Developer Portal to obtain client credentials. The base URL for the API is https://quickbooks.api.intuit.com/v3/company/{realmId}. Common endpoints include /invoice, /customer, /payment, and /bill. Rate limits apply: 500 requests per minute for production apps. Always implement exponential backoff for 429 responses. ## Stripe Payment Integration Stripe provides both client-side (Stripe.js) and server-side APIs. For PCI compliance, never pass raw card numbers through your server—use Stripe Elements or the Payment Intents API. Webhooks are essential for handling asynchronous events like payment succeeded or subscription renewed. Configure your webhook endpoint to verify signatures using the Stripe-Signature header. ## ShipStation Integration The ShipStation API is REST-based. Authentication uses API key and API secret in the Authorization header. Endpoints cover orders, shipments, carriers, and warehouses. Poll for new orders or use webhooks if available for your plan. Batch operations are supported for bulk label creation. ## Twilio SMS Integration Twilio's REST API requires Account SID and Auth Token. The Messaging API endpoint is /2010-04-01/Accounts/{AccountSid}/Messages.json. For two-way messaging, configure a webhook URL to receive incoming messages. Consider using a queue for high-volume outbound SMS to avoid rate limits. # PentaCodes Technical Reference and Integration Documentation # Version 1.0 | Last Updated March 2025 # This document contains technical reference material for common integrations and deployment procedures. ## QuickBooks Online Integration The QuickBooks Online API uses OAuth 2.0 for authentication. You will need to register your application in the Intuit Developer Portal to obtain client credentials. The base URL for the API is https://quickbooks.api.intuit.com/v3/company/{realmId}. Common endpoints include /invoice, /customer, /payment, and /bill. Rate limits apply: 500 requests per minute for production apps. Always implement exponential backoff for 429 responses. ## Stripe Payment Integration Stripe provides both client-side (Stripe.js) and server-side APIs. For PCI compliance, never pass raw card numbers through your server—use Stripe Elements or the Payment Intents API. Webhooks are essential for handling asynchronous events like payment succeeded or subscription renewed. Configure your webhook endpoint to verify signatures using the Stripe-Signature header. ## ShipStation Integration The ShipStation API is REST-based. Authentication uses API key and API secret in the Authorization header. Endpoints cover orders, shipments, carriers, and warehouses. Poll for new orders or use webhooks if available for your plan. Batch operations are supported for bulk label creation. ## Twilio SMS Integration Twilio's REST API requires Account SID and Auth Token. The Messaging API endpoint is /2010-04-01/Accounts/{AccountSid}/Messages.json. For two-way messaging, configure a webhook URL to receive incoming messages. Consider using a queue for high-volume outbound SMS to avoid rate limits. # PentaCodes Technical Reference and Integration Documentation # Version 1.0 | Last Updated March 2025 # This document contains technical reference material for common integrations and deployment procedures. ## QuickBooks Online Integration The QuickBooks Online API uses OAuth 2.0 for authentication. You will need to register your application in the Intuit Developer Portal to obtain client credentials. The base URL for the API is https://quickbooks.api.intuit.com/v3/company/{realmId}. Common endpoints include /invoice, /customer, /payment, and /bill. Rate limits apply: 500 requests per minute for production apps. Always implement exponential backoff for 429 responses. ## Stripe Payment Integration Stripe provides both client-side (Stripe.js) and server-side APIs. For PCI compliance, never pass raw card numbers through your server—use Stripe Elements or the Payment Intents API. Webhooks are essential for handling asynchronous events like payment succeeded or subscription renewed. Configure your webhook endpoint to verify signatures using the Stripe-Signature header. ## ShipStation Integration The ShipStation API is REST-based. Authentication uses API key and API secret in the Authorization header. Endpoints cover orders, shipments, carriers, and warehouses. Poll for new orders or use webhooks if available for your plan. Batch operations are supported for bulk label creation. ## Twilio SMS Integration Twilio's REST API requires Account SID and Auth Token. The Messaging API endpoint is /2010-04-01/Accounts/{AccountSid}/Messages.json. For two-way messaging, configure a webhook URL to receive incoming messages. Consider using a queue for high-volume outbound SMS to avoid rate limits. # PentaCodes Technical Reference and Integration Documentation # Version 1.0 | Last Updated March 2025 # This document contains technical reference material for common integrations and deployment procedures. ## QuickBooks Online Integration The QuickBooks Online API uses OAuth 2.0 for authentication. You will need to register your application in the Intuit Developer Portal to obtain client credentials. The base URL for the API is https://quickbooks.api.intuit.com/v3/company/{realmId}. Common endpoints include /invoice, /customer, /payment, and /bill. Rate limits apply: 500 requests per minute for production apps. Always implement exponential backoff for 429 responses. ## Stripe Payment Integration Stripe provides both client-side (Stripe.js) and server-side APIs. For PCI compliance, never pass raw card numbers through your server—use Stripe Elements or the Payment Intents API. Webhooks are essential for handling asynchronous events like payment succeeded or subscription renewed. Configure your webhook endpoint to verify signatures using the Stripe-Signature header. ## ShipStation Integration The ShipStation API is REST-based. Authentication uses API key and API secret in the Authorization header. Endpoints cover orders, shipments, carriers, and warehouses. Poll for new orders or use webhooks if available for your plan. Batch operations are supported for bulk label creation. ## Twilio SMS Integration Twilio's REST API requires Account SID and Auth Token. The Messaging API endpoint is /2010-04-01/Accounts/{AccountSid}/Messages.json. For two-way messaging, configure a webhook URL to receive incoming messages. Consider using a queue for high-volume outbound SMS to avoid rate limits. # PentaCodes Technical Reference and Integration Documentation # Version 1.0 | Last Updated March 2025 # This document contains technical reference material for common integrations and deployment procedures. ## QuickBooks Online Integration The QuickBooks Online API uses OAuth 2.0 for authentication. You will need to register your application in the Intuit Developer Portal to obtain client credentials. The base URL for the API is https://quickbooks.api.intuit.com/v3/company/{realmId}. Common endpoints include /invoice, /customer, /payment, and /bill. Rate limits apply: 500 requests per minute for production apps. Always implement exponential backoff for 429 responses. ## Stripe Payment Integration Stripe provides both client-side (Stripe.js) and server-side APIs. For PCI compliance, never pass raw card numbers through your server—use Stripe Elements or the Payment Intents API. Webhooks are essential for handling asynchronous events like payment succeeded or subscription renewed. Configure your webhook endpoint to verify signatures using the Stripe-Signature header. ## ShipStation Integration The ShipStation API is REST-based. Authentication uses API key and API secret in the Authorization header. Endpoints cover orders, shipments, carriers, and warehouses. Poll for new orders or use webhooks if available for your plan. Batch operations are supported for bulk label creation. ## Twilio SMS Integration Twilio's REST API requires Account SID and Auth Token. The Messaging API endpoint is /2010-04-01/Accounts/{AccountSid}/Messages.json. For two-way messaging, configure a webhook URL to receive incoming messages. Consider using a queue for high-volume outbound SMS to avoid rate limits. # PentaCodes Technical Reference and Integration Documentation # Version 1.0 | Last Updated March 2025 # This document contains technical reference material for common integrations and deployment procedures. ## QuickBooks Online Integration The QuickBooks Online API uses OAuth 2.0 for authentication. You will need to register your application in the Intuit Developer Portal to obtain client credentials. The base URL for the API is https://quickbooks.api.intuit.com/v3/company/{realmId}. Common endpoints include /invoice, /customer, /payment, and /bill. Rate limits apply: 500 requests per minute for production apps. Always implement exponential backoff for 429 responses. ## Stripe Payment Integration Stripe provides both client-side (Stripe.js) and server-side APIs. For PCI compliance, never pass raw card numbers through your server—use Stripe Elements or the Payment Intents API. Webhooks are essential for handling asynchronous events like payment succeeded or subscription renewed. Configure your webhook endpoint to verify signatures using the Stripe-Signature header. ## ShipStation Integration The ShipStation API is REST-based. Authentication uses API key and API secret in the Authorization header. Endpoints cover orders, shipments, carriers, and warehouses. Poll for new orders or use webhooks if available for your plan. Batch operations are supported for bulk label creation. ## Twilio SMS Integration Twilio's REST API requires Account SID and Auth Token. The Messaging API endpoint is /2010-04-01/Accounts/{AccountSid}/Messages.json. For two-way messaging, configure a webhook URL to receive incoming messages. Consider using a queue for high-volume outbound SMS to avoid rate limits. # PentaCodes Technical Reference and Integration Documentation # Version 1.0 | Last Updated March 2025 # This document contains technical reference material for common integrations and deployment procedures. ## QuickBooks Online Integration The QuickBooks Online API uses OAuth 2.0 for authentication. You will need to register your application in the Intuit Developer Portal to obtain client credentials. The base URL for the API is https://quickbooks.api.intuit.com/v3/company/{realmId}. Common endpoints include /invoice, /customer, /payment, and /bill. Rate limits apply: 500 requests per minute for production apps. Always implement exponential backoff for 429 responses. ## Stripe Payment Integration Stripe provides both client-side (Stripe.js) and server-side APIs. For PCI compliance, never pass raw card numbers through your server—use Stripe Elements or the Payment Intents API. Webhooks are essential for handling asynchronous events like payment succeeded or subscription renewed. Configure your webhook endpoint to verify signatures using the Stripe-Signature header. ## ShipStation Integration The ShipStation API is REST-based. Authentication uses API key and API secret in the Authorization header. Endpoints cover orders, shipments, carriers, and warehouses. Poll for new orders or use webhooks if available for your plan. Batch operations are supported for bulk label creation. ## Twilio SMS Integration Twilio's REST API requires Account SID and Auth Token. The Messaging API endpoint is /2010-04-01/Accounts/{AccountSid}/Messages.json. For two-way messaging, configure a webhook URL to receive incoming messages. Consider using a queue for high-volume outbound SMS to avoid rate limits. # PentaCodes Technical Reference and Integration Documentation # Version 1.0 | Last Updated March 2025 # This document contains technical reference material for common integrations and deployment procedures. ## QuickBooks Online Integration The QuickBooks Online API uses OAuth 2.0 for authentication. You will need to register your application in the Intuit Developer Portal to obtain client credentials. The base URL for the API is https://quickbooks.api.intuit.com/v3/company/{realmId}. Common endpoints include /invoice, /customer, /payment, and /bill. Rate limits apply: 500 requests per minute for production apps. Always implement exponential backoff for 429 responses. ## Stripe Payment Integration Stripe provides both client-side (Stripe.js) and server-side APIs. For PCI compliance, never pass raw card numbers through your server—use Stripe Elements or the Payment Intents API. Webhooks are essential for handling asynchronous events like payment succeeded or subscription renewed. Configure your webhook endpoint to verify signatures using the Stripe-Signature header. ## ShipStation Integration The ShipStation API is REST-based. Authentication uses API key and API secret in the Authorization header. Endpoints cover orders, shipments, carriers, and warehouses. Poll for new orders or use webhooks if available for your plan. Batch operations are supported for bulk label creation. ## Twilio SMS Integration Twilio's REST API requires Account SID and Auth Token. The Messaging API endpoint is /2010-04-01/Accounts/{AccountSid}/Messages.json. For two-way messaging, configure a webhook URL to receive incoming messages. Consider using a queue for high-volume outbound SMS to avoid rate limits. # PentaCodes Technical Reference and Integration Documentation # Version 1.0 | Last Updated March 2025 # This document contains technical reference material for common integrations and deployment procedures. ## QuickBooks Online Integration The QuickBooks Online API uses OAuth 2.0 for authentication. You will need to register your application in the Intuit Developer Portal to obtain client credentials. The base URL for the API is https://quickbooks.api.intuit.com/v3/company/{realmId}. Common endpoints include /invoice, /customer, /payment, and /bill. Rate limits apply: 500 requests per minute for production apps. Always implement exponential backoff for 429 responses. ## Stripe Payment Integration Stripe provides both client-side (Stripe.js) and server-side APIs. For PCI compliance, never pass raw card numbers through your server—use Stripe Elements or the Payment Intents API. Webhooks are essential for handling asynchronous events like payment succeeded or subscription renewed. Configure your webhook endpoint to verify signatures using the Stripe-Signature header. ## ShipStation Integration The ShipStation API is REST-based. Authentication uses API key and API secret in the Authorization header. Endpoints cover orders, shipments, carriers, and warehouses. Poll for new orders or use webhooks if available for your plan. Batch operations are supported for bulk label creation. ## Twilio SMS Integration Twilio's REST API requires Account SID and Auth Token. The Messaging API endpoint is /2010-04-01/Accounts/{AccountSid}/Messages.json. For two-way messaging, configure a webhook URL to receive incoming messages. Consider using a queue for high-volume outbound SMS to avoid rate limits. # PentaCodes Technical Reference and Integration Documentation # Version 1.0 | Last Updated March 2025 # This document contains technical reference material for common integrations and deployment procedures. ## QuickBooks Online Integration The QuickBooks Online API uses OAuth 2.0 for authentication. You will need to register your application in the Intuit Developer Portal to obtain client credentials. The base URL for the API is https://quickbooks.api.intuit.com/v3/company/{realmId}. Common endpoints include /invoice, /customer, /payment, and /bill. Rate limits apply: 500 requests per minute for production apps. Always implement exponential backoff for 429 responses. ## Stripe Payment Integration Stripe provides both client-side (Stripe.js) and server-side APIs. For PCI compliance, never pass raw card numbers through your server—use Stripe Elements or the Payment Intents API. Webhooks are essential for handling asynchronous events like payment succeeded or subscription renewed. Configure your webhook endpoint to verify signatures using the Stripe-Signature header. ## ShipStation Integration The ShipStation API is REST-based. Authentication uses API key and API secret in the Authorization header. Endpoints cover orders, shipments, carriers, and warehouses. Poll for new orders or use webhooks if available for your plan. Batch operations are supported for bulk label creation. ## Twilio SMS Integration Twilio's REST API requires Account SID and Auth Token. The Messaging API endpoint is /2010-04-01/Accounts/{AccountSid}/Messages.json. For two-way messaging, configure a webhook URL to receive incoming messages. Consider using a queue for high-volume outbound SMS to avoid rate limits. # PentaCodes Technical Reference and Integration Documentation # Version 1.0 | Last Updated March 2025 # This document contains technical reference material for common integrations and deployment procedures. ## QuickBooks Online Integration The QuickBooks Online API uses OAuth 2.0 for authentication. You will need to register your application in the Intuit Developer Portal to obtain client credentials. The base URL for the API is https://quickbooks.api.intuit.com/v3/company/{realmId}. Common endpoints include /invoice, /customer, /payment, and /bill. Rate limits apply: 500 requests per minute for production apps. Always implement exponential backoff for 429 responses. ## Stripe Payment Integration Stripe provides both client-side (Stripe.js) and server-side APIs. For PCI compliance, never pass raw card numbers through your server—use Stripe Elements or the Payment Intents API. Webhooks are essential for handling asynchronous events like payment succeeded or subscription renewed. Configure your webhook endpoint to verify signatures using the Stripe-Signature header. ## ShipStation Integration The ShipStation API is REST-based. Authentication uses API key and API secret in the Authorization header. Endpoints cover orders, shipments, carriers, and warehouses. Poll for new orders or use webhooks if available for your plan. Batch operations are supported for bulk label creation. ## Twilio SMS Integration Twilio's REST API requires Account SID and Auth Token. The Messaging API endpoint is /2010-04-01/Accounts/{AccountSid}/Messages.json. For two-way messaging, configure a webhook URL to receive incoming messages. Consider using a queue for high-volume outbound SMS to avoid rate limits. # PentaCodes Technical Reference and Integration Documentation # Version 1.0 | Last Updated March 2025 # This document contains technical reference material for common integrations and deployment procedures. ## QuickBooks Online Integration The QuickBooks Online API uses OAuth 2.0 for authentication. You will need to register your application in the Intuit Developer Portal to obtain client credentials. The base URL for the API is https://quickbooks.api.intuit.com/v3/company/{realmId}. Common endpoints include /invoice, /customer, /payment, and /bill. Rate limits apply: 500 requests per minute for production apps. Always implement exponential backoff for 429 responses. ## Stripe Payment Integration Stripe provides both client-side (Stripe.js) and server-side APIs. For PCI compliance, never pass raw card numbers through your server—use Stripe Elements or the Payment Intents API. Webhooks are essential for handling asynchronous events like payment succeeded or subscription renewed. Configure your webhook endpoint to verify signatures using the Stripe-Signature header. ## ShipStation Integration The ShipStation API is REST-based. Authentication uses API key and API secret in the Authorization header. Endpoints cover orders, shipments, carriers, and warehouses. Poll for new orders or use webhooks if available for your plan. Batch operations are supported for bulk label creation. ## Twilio SMS Integration Twilio's REST API requires Account SID and Auth Token. The Messaging API endpoint is /2010-04-01/Accounts/{AccountSid}/Messages.json. For two-way messaging, configure a webhook URL to receive incoming messages. Consider using a queue for high-volume outbound SMS to avoid rate limits. # PentaCodes Technical Reference and Integration Documentation # Version 1.0 | Last Updated March 2025 # This document contains technical reference material for common integrations and deployment procedures. ## QuickBooks Online Integration The QuickBooks Online API uses OAuth 2.0 for authentication. You will need to register your application in the Intuit Developer Portal to obtain client credentials. The base URL for the API is https://quickbooks.api.intuit.com/v3/company/{realmId}. Common endpoints include /invoice, /customer, /payment, and /bill. Rate limits apply: 500 requests per minute for production apps. Always implement exponential backoff for 429 responses. ## Stripe Payment Integration Stripe provides both client-side (Stripe.js) and server-side APIs. For PCI compliance, never pass raw card numbers through your server—use Stripe Elements or the Payment Intents API. Webhooks are essential for handling asynchronous events like payment succeeded or subscription renewed. Configure your webhook endpoint to verify signatures using the Stripe-Signature header. ## ShipStation Integration The ShipStation API is REST-based. Authentication uses API key and API secret in the Authorization header. Endpoints cover orders, shipments, carriers, and warehouses. Poll for new orders or use webhooks if available for your plan. Batch operations are supported for bulk label creation. ## Twilio SMS Integration Twilio's REST API requires Account SID and Auth Token. The Messaging API endpoint is /2010-04-01/Accounts/{AccountSid}/Messages.json. For two-way messaging, configure a webhook URL to receive incoming messages. Consider using a queue for high-volume outbound SMS to avoid rate limits. # PentaCodes Technical Reference and Integration Documentation # Version 1.0 | Last Updated March 2025 # This document contains technical reference material for common integrations and deployment procedures. ## QuickBooks Online Integration The QuickBooks Online API uses OAuth 2.0 for authentication. You will need to register your application in the Intuit Developer Portal to obtain client credentials. The base URL for the API is https://quickbooks.api.intuit.com/v3/company/{realmId}. Common endpoints include /invoice, /customer, /payment, and /bill. Rate limits apply: 500 requests per minute for production apps. Always implement exponential backoff for 429 responses. ## Stripe Payment Integration Stripe provides both client-side (Stripe.js) and server-side APIs. For PCI compliance, never pass raw card numbers through your server—use Stripe Elements or the Payment Intents API. Webhooks are essential for handling asynchronous events like payment succeeded or subscription renewed. Configure your webhook endpoint to verify signatures using the Stripe-Signature header. ## ShipStation Integration The ShipStation API is REST-based. Authentication uses API key and API secret in the Authorization header. Endpoints cover orders, shipments, carriers, and warehouses. Poll for new orders or use webhooks if available for your plan. Batch operations are supported for bulk label creation. ## Twilio SMS Integration Twilio's REST API requires Account SID and Auth Token. The Messaging API endpoint is /2010-04-01/Accounts/{AccountSid}/Messages.json. For two-way messaging, configure a webhook URL to receive incoming messages. Consider using a queue for high-volume outbound SMS to avoid rate limits. # PentaCodes Technical Reference and Integration Documentation # Version 1.0 | Last Updated March 2025 # This document contains technical reference material for common integrations and deployment procedures. ## QuickBooks Online Integration The QuickBooks Online API uses OAuth 2.0 for authentication. You will need to register your application in the Intuit Developer Portal to obtain client credentials. The base URL for the API is https://quickbooks.api.intuit.com/v3/company/{realmId}. Common endpoints include /invoice, /customer, /payment, and /bill. Rate limits apply: 500 requests per minute for production apps. Always implement exponential backoff for 429 responses. ## Stripe Payment Integration Stripe provides both client-side (Stripe.js) and server-side APIs. For PCI compliance, never pass raw card numbers through your server—use Stripe Elements or the Payment Intents API. Webhooks are essential for handling asynchronous events like payment succeeded or subscription renewed. Configure your webhook endpoint to verify signatures using the Stripe-Signature header. ## ShipStation Integration The ShipStation API is REST-based. Authentication uses API key and API secret in the Authorization header. Endpoints cover orders, shipments, carriers, and warehouses. Poll for new orders or use webhooks if available for your plan. Batch operations are supported for bulk label creation. ## Twilio SMS Integration Twilio's REST API requires Account SID and Auth Token. The Messaging API endpoint is /2010-04-01/Accounts/{AccountSid}/Messages.json. For two-way messaging, configure a webhook URL to receive incoming messages. Consider using a queue for high-volume outbound SMS to avoid rate limits. # PentaCodes Technical Reference and Integration Documentation # Version 1.0 | Last Updated March 2025 # This document contains technical reference material for common integrations and deployment procedures. ## QuickBooks Online Integration The QuickBooks Online API uses OAuth 2.0 for authentication. You will need to register your application in the Intuit Developer Portal to obtain client credentials. The base URL for the API is https://quickbooks.api.intuit.com/v3/company/{realmId}. Common endpoints include /invoice, /customer, /payment, and /bill. Rate limits apply: 500 requests per minute for production apps. Always implement exponential backoff for 429 responses. ## Stripe Payment Integration Stripe provides both client-side (Stripe.js) and server-side APIs. For PCI compliance, never pass raw card numbers through your server—use Stripe Elements or the Payment Intents API. Webhooks are essential for handling asynchronous events like payment succeeded or subscription renewed. Configure your webhook endpoint to verify signatures using the Stripe-Signature header. ## ShipStation Integration The ShipStation API is REST-based. Authentication uses API key and API secret in the Authorization header. Endpoints cover orders, shipments, carriers, and warehouses. Poll for new orders or use webhooks if available for your plan. Batch operations are supported for bulk label creation. ## Twilio SMS Integration Twilio's REST API requires Account SID and Auth Token. The Messaging API endpoint is /2010-04-01/Accounts/{AccountSid}/Messages.json. For two-way messaging, configure a webhook URL to receive incoming messages. Consider using a queue for high-volume outbound SMS to avoid rate limits. # PentaCodes Technical Reference and Integration Documentation # Version 1.0 | Last Updated March 2025 # This document contains technical reference material for common integrations and deployment procedures. ## QuickBooks Online Integration The QuickBooks Online API uses OAuth 2.0 for authentication. You will need to register your application in the Intuit Developer Portal to obtain client credentials. The base URL for the API is https://quickbooks.api.intuit.com/v3/company/{realmId}. Common endpoints include /invoice, /customer, /payment, and /bill. Rate limits apply: 500 requests per minute for production apps. Always implement exponential backoff for 429 responses. ## Stripe Payment Integration Stripe provides both client-side (Stripe.js) and server-side APIs. For PCI compliance, never pass raw card numbers through your server—use Stripe Elements or the Payment Intents API. Webhooks are essential for handling asynchronous events like payment succeeded or subscription renewed. Configure your webhook endpoint to verify signatures using the Stripe-Signature header. ## ShipStation Integration The ShipStation API is REST-based. Authentication uses API key and API secret in the Authorization header. Endpoints cover orders, shipments, carriers, and warehouses. Poll for new orders or use webhooks if available for your plan. Batch operations are supported for bulk label creation. ## Twilio SMS Integration Twilio's REST API requires Account SID and Auth Token. The Messaging API endpoint is /2010-04-01/Accounts/{AccountSid}/Messages.json. For two-way messaging, configure a webhook URL to receive incoming messages. Consider using a queue for high-volume outbound SMS to avoid rate limits. # PentaCodes Technical Reference and Integration Documentation # Version 1.0 | Last Updated March 2025 # This document contains technical reference material for common integrations and deployment procedures. ## QuickBooks Online Integration The QuickBooks Online API uses OAuth 2.0 for authentication. You will need to register your application in the Intuit Developer Portal to obtain client credentials. The base URL for the API is https://quickbooks.api.intuit.com/v3/company/{realmId}. Common endpoints include /invoice, /customer, /payment, and /bill. Rate limits apply: 500 requests per minute for production apps. Always implement exponential backoff for 429 responses. ## Stripe Payment Integration Stripe provides both client-side (Stripe.js) and server-side APIs. For PCI compliance, never pass raw card numbers through your server—use Stripe Elements or the Payment Intents API. Webhooks are essential for handling asynchronous events like payment succeeded or subscription renewed. Configure your webhook endpoint to verify signatures using the Stripe-Signature header. ## ShipStation Integration The ShipStation API is REST-based. Authentication uses API key and API secret in the Authorization header. Endpoints cover orders, shipments, carriers, and warehouses. Poll for new orders or use webhooks if available for your plan. Batch operations are supported for bulk label creation. ## Twilio SMS Integration Twilio's REST API requires Account SID and Auth Token. The Messaging API endpoint is /2010-04-01/Accounts/{AccountSid}/Messages.json. For two-way messaging, configure a webhook URL to receive incoming messages. Consider using a queue for high-volume outbound SMS to avoid rate limits. # PentaCodes Technical Reference and Integration Documentation # Version 1.0 | Last Updated March 2025 # This document contains technical reference material for common integrations and deployment procedures. ## QuickBooks Online Integration The QuickBooks Online API uses OAuth 2.0 for authentication. You will need to register your application in the Intuit Developer Portal to obtain client credentials. The base URL for the API is https://quickbooks.api.intuit.com/v3/company/{realmId}. Common endpoints include /invoice, /customer, /payment, and /bill. Rate limits apply: 500 requests per minute for production apps. Always implement exponential backoff for 429 responses. ## Stripe Payment Integration Stripe provides both client-side (Stripe.js) and server-side APIs. For PCI compliance, never pass raw card numbers through your server—use Stripe Elements or the Payment Intents API. Webhooks are essential for handling asynchronous events like payment succeeded or subscription renewed. Configure your webhook endpoint to verify signatures using the Stripe-Signature header. ## ShipStation Integration The ShipStation API is REST-based. Authentication uses API key and API secret in the Authorization header. Endpoints cover orders, shipments, carriers, and warehouses. Poll for new orders or use webhooks if available for your plan. Batch operations are supported for bulk label creation. ## Twilio SMS Integration Twilio's REST API requires Account SID and Auth Token. The Messaging API endpoint is /2010-04-01/Accounts/{AccountSid}/Messages.json. For two-way messaging, configure a webhook URL to receive incoming messages. Consider using a queue for high-volume outbound SMS to avoid rate limits. # PentaCodes Technical Reference and Integration Documentation # Version 1.0 | Last Updated March 2025 # This document contains technical reference material for common integrations and deployment procedures. ## QuickBooks Online Integration The QuickBooks Online API uses OAuth 2.0 for authentication. You will need to register your application in the Intuit Developer Portal to obtain client credentials. The base URL for the API is https://quickbooks.api.intuit.com/v3/company/{realmId}. Common endpoints include /invoice, /customer, /payment, and /bill. Rate limits apply: 500 requests per minute for production apps. Always implement exponential backoff for 429 responses. ## Stripe Payment Integration Stripe provides both client-side (Stripe.js) and server-side APIs. For PCI compliance, never pass raw card numbers through your server—use Stripe Elements or the Payment Intents API. Webhooks are essential for handling asynchronous events like payment succeeded or subscription renewed. Configure your webhook endpoint to verify signatures using the Stripe-Signature header. ## ShipStation Integration The ShipStation API is REST-based. Authentication uses API key and API secret in the Authorization header. Endpoints cover orders, shipments, carriers, and warehouses. Poll for new orders or use webhooks if available for your plan. Batch operations are supported for bulk label creation. ## Twilio SMS Integration Twilio's REST API requires Account SID and Auth Token. The Messaging API endpoint is /2010-04-01/Accounts/{AccountSid}/Messages.json. For two-way messaging, configure a webhook URL to receive incoming messages. Consider using a queue for high-volume outbound SMS to avoid rate limits. # PentaCodes Technical Reference and Integration Documentation # Version 1.0 | Last Updated March 2025 # This document contains technical reference material for common integrations and deployment procedures. ## QuickBooks Online Integration The QuickBooks Online API uses OAuth 2.0 for authentication. You will need to register your application in the Intuit Developer Portal to obtain client credentials. The base URL for the API is https://quickbooks.api.intuit.com/v3/company/{realmId}. Common endpoints include /invoice, /customer, /payment, and /bill. Rate limits apply: 500 requests per minute for production apps. Always implement exponential backoff for 429 responses. ## Stripe Payment Integration Stripe provides both client-side (Stripe.js) and server-side APIs. For PCI compliance, never pass raw card numbers through your server—use Stripe Elements or the Payment Intents API. Webhooks are essential for handling asynchronous events like payment succeeded or subscription renewed. Configure your webhook endpoint to verify signatures using the Stripe-Signature header. ## ShipStation Integration The ShipStation API is REST-based. Authentication uses API key and API secret in the Authorization header. Endpoints cover orders, shipments, carriers, and warehouses. Poll for new orders or use webhooks if available for your plan. Batch operations are supported for bulk label creation. ## Twilio SMS Integration Twilio's REST API requires Account SID and Auth Token. The Messaging API endpoint is /2010-04-01/Accounts/{AccountSid}/Messages.json. For two-way messaging, configure a webhook URL to receive incoming messages. Consider using a queue for high-volume outbound SMS to avoid rate limits. # PentaCodes Technical Reference and Integration Documentation # Version 1.0 | Last Updated March 2025 # This document contains technical reference material for common integrations and deployment procedures. ## QuickBooks Online Integration The QuickBooks Online API uses OAuth 2.0 for authentication. You will need to register your application in the Intuit Developer Portal to obtain client credentials. The base URL for the API is https://quickbooks.api.intuit.com/v3/company/{realmId}. Common endpoints include /invoice, /customer, /payment, and /bill. Rate limits apply: 500 requests per minute for production apps. Always implement exponential backoff for 429 responses. ## Stripe Payment Integration Stripe provides both client-side (Stripe.js) and server-side APIs. For PCI compliance, never pass raw card numbers through your server—use Stripe Elements or the Payment Intents API. Webhooks are essential for handling asynchronous events like payment succeeded or subscription renewed. Configure your webhook endpoint to verify signatures using the Stripe-Signature header. ## ShipStation Integration The ShipStation API is REST-based. Authentication uses API key and API secret in the Authorization header. Endpoints cover orders, shipments, carriers, and warehouses. Poll for new orders or use webhooks if available for your plan. Batch operations are supported for bulk label creation. ## Twilio SMS Integration Twilio's REST API requires Account SID and Auth Token. The Messaging API endpoint is /2010-04-01/Accounts/{AccountSid}/Messages.json. For two-way messaging, configure a webhook URL to receive incoming messages. Consider using a queue for high-volume outbound SMS to avoid rate limits. # PentaCodes Technical Reference and Integration Documentation # Version 1.0 | Last Updated March 2025 # This document contains technical reference material for common integrations and deployment procedures. ## QuickBooks Online Integration The QuickBooks Online API uses OAuth 2.0 for authentication. You will need to register your application in the Intuit Developer Portal to obtain client credentials. The base URL for the API is https://quickbooks.api.intuit.com/v3/company/{realmId}. Common endpoints include /invoice, /customer, /payment, and /bill. Rate limits apply: 500 requests per minute for production apps. Always implement exponential backoff for 429 responses. ## Stripe Payment Integration Stripe provides both client-side (Stripe.js) and server-side APIs. For PCI compliance, never pass raw card numbers through your server—use Stripe Elements or the Payment Intents API. Webhooks are essential for handling asynchronous events like payment succeeded or subscription renewed. Configure your webhook endpoint to verify signatures using the Stripe-Signature header. ## ShipStation Integration The ShipStation API is REST-based. Authentication uses API key and API secret in the Authorization header. Endpoints cover orders, shipments, carriers, and warehouses. Poll for new orders or use webhooks if available for your plan. Batch operations are supported for bulk label creation. ## Twilio SMS Integration Twilio's REST API requires Account SID and Auth Token. The Messaging API endpoint is /2010-04-01/Accounts/{AccountSid}/Messages.json. For two-way messaging, configure a webhook URL to receive incoming messages. Consider using a queue for high-volume outbound SMS to avoid rate limits. # PentaCodes Technical Reference and Integration Documentation # Version 1.0 | Last Updated March 2025 # This document contains technical reference material for common integrations and deployment procedures. ## QuickBooks Online Integration The QuickBooks Online API uses OAuth 2.0 for authentication. You will need to register your application in the Intuit Developer Portal to obtain client credentials. The base URL for the API is https://quickbooks.api.intuit.com/v3/company/{realmId}. Common endpoints include /invoice, /customer, /payment, and /bill. Rate limits apply: 500 requests per minute for production apps. Always implement exponential backoff for 429 responses. ## Stripe Payment Integration Stripe provides both client-side (Stripe.js) and server-side APIs. For PCI compliance, never pass raw card numbers through your server—use Stripe Elements or the Payment Intents API. Webhooks are essential for handling asynchronous events like payment succeeded or subscription renewed. Configure your webhook endpoint to verify signatures using the Stripe-Signature header. ## ShipStation Integration The ShipStation API is REST-based. Authentication uses API key and API secret in the Authorization header. Endpoints cover orders, shipments, carriers, and warehouses. Poll for new orders or use webhooks if available for your plan. Batch operations are supported for bulk label creation. ## Twilio SMS Integration Twilio's REST API requires Account SID and Auth Token. The Messaging API endpoint is /2010-04-01/Accounts/{AccountSid}/Messages.json. For two-way messaging, configure a webhook URL to receive incoming messages. Consider using a queue for high-volume outbound SMS to avoid rate limits. # PentaCodes Technical Reference and Integration Documentation # Version 1.0 | Last Updated March 2025 # This document contains technical reference material for common integrations and deployment procedures. ## QuickBooks Online Integration The QuickBooks Online API uses OAuth 2.0 for authentication. You will need to register your application in the Intuit Developer Portal to obtain client credentials. The base URL for the API is https://quickbooks.api.intuit.com/v3/company/{realmId}. Common endpoints include /invoice, /customer, /payment, and /bill. Rate limits apply: 500 requests per minute for production apps. Always implement exponential backoff for 429 responses. ## Stripe Payment Integration Stripe provides both client-side (Stripe.js) and server-side APIs. For PCI compliance, never pass raw card numbers through your server—use Stripe Elements or the Payment Intents API. Webhooks are essential for handling asynchronous events like payment succeeded or subscription renewed. Configure your webhook endpoint to verify signatures using the Stripe-Signature header. ## ShipStation Integration The ShipStation API is REST-based. Authentication uses API key and API secret in the Authorization header. Endpoints cover orders, shipments, carriers, and warehouses. Poll for new orders or use webhooks if available for your plan. Batch operations are supported for bulk label creation. ## Twilio SMS Integration Twilio's REST API requires Account SID and Auth Token. The Messaging API endpoint is /2010-04-01/Accounts/{AccountSid}/Messages.json. For two-way messaging, configure a webhook URL to receive incoming messages. Consider using a queue for high-volume outbound SMS to avoid rate limits. # PentaCodes Technical Reference and Integration Documentation # Version 1.0 | Last Updated March 2025 # This document contains technical reference material for common integrations and deployment procedures. ## QuickBooks Online Integration The QuickBooks Online API uses OAuth 2.0 for authentication. You will need to register your application in the Intuit Developer Portal to obtain client credentials. The base URL for the API is https://quickbooks.api.intuit.com/v3/company/{realmId}. Common endpoints include /invoice, /customer, /payment, and /bill. Rate limits apply: 500 requests per minute for production apps. Always implement exponential backoff for 429 responses. ## Stripe Payment Integration Stripe provides both client-side (Stripe.js) and server-side APIs. For PCI compliance, never pass raw card numbers through your server—use Stripe Elements or the Payment Intents API. Webhooks are essential for handling asynchronous events like payment succeeded or subscription renewed. Configure your webhook endpoint to verify signatures using the Stripe-Signature header. ## ShipStation Integration The ShipStation API is REST-based. Authentication uses API key and API secret in the Authorization header. Endpoints cover orders, shipments, carriers, and warehouses. Poll for new orders or use webhooks if available for your plan. Batch operations are supported for bulk label creation. ## Twilio SMS Integration Twilio's REST API requires Account SID and Auth Token. The Messaging API endpoint is /2010-04-01/Accounts/{AccountSid}/Messages.json. For two-way messaging, configure a webhook URL to receive incoming messages. Consider using a queue for high-volume outbound SMS to avoid rate limits. # PentaCodes Technical Reference and Integration Documentation # Version 1.0 | Last Updated March 2025 # This document contains technical reference material for common integrations and deployment procedures. ## QuickBooks Online Integration The QuickBooks Online API uses OAuth 2.0 for authentication. You will need to register your application in the Intuit Developer Portal to obtain client credentials. The base URL for the API is https://quickbooks.api.intuit.com/v3/company/{realmId}. Common endpoints include /invoice, /customer, /payment, and /bill. Rate limits apply: 500 requests per minute for production apps. Always implement exponential backoff for 429 responses. ## Stripe Payment Integration Stripe provides both client-side (Stripe.js) and server-side APIs. For PCI compliance, never pass raw card numbers through your server—use Stripe Elements or the Payment Intents API. Webhooks are essential for handling asynchronous events like payment succeeded or subscription renewed. Configure your webhook endpoint to verify signatures using the Stripe-Signature header. ## ShipStation Integration The ShipStation API is REST-based. Authentication uses API key and API secret in the Authorization header. Endpoints cover orders, shipments, carriers, and warehouses. Poll for new orders or use webhooks if available for your plan. Batch operations are supported for bulk label creation. ## Twilio SMS Integration Twilio's REST API requires Account SID and Auth Token. The Messaging API endpoint is /2010-04-01/Accounts/{AccountSid}/Messages.json. For two-way messaging, configure a webhook URL to receive incoming messages. Consider using a queue for high-volume outbound SMS to avoid rate limits. # PentaCodes Technical Reference and Integration Documentation # Version 1.0 | Last Updated March 2025 # This document contains technical reference material for common integrations and deployment procedures. ## QuickBooks Online Integration The QuickBooks Online API uses OAuth 2.0 for authentication. You will need to register your application in the Intuit Developer Portal to obtain client credentials. The base URL for the API is https://quickbooks.api.intuit.com/v3/company/{realmId}. Common endpoints include /invoice, /customer, /payment, and /bill. Rate limits apply: 500 requests per minute for production apps. Always implement exponential backoff for 429 responses. ## Stripe Payment Integration Stripe provides both client-side (Stripe.js) and server-side APIs. For PCI compliance, never pass raw card numbers through your server—use Stripe Elements or the Payment Intents API. Webhooks are essential for handling asynchronous events like payment succeeded or subscription renewed. Configure your webhook endpoint to verify signatures using the Stripe-Signature header. ## ShipStation Integration The ShipStation API is REST-based. Authentication uses API key and API secret in the Authorization header. Endpoints cover orders, shipments, carriers, and warehouses. Poll for new orders or use webhooks if available for your plan. Batch operations are supported for bulk label creation. ## Twilio SMS Integration Twilio's REST API requires Account SID and Auth Token. The Messaging API endpoint is /2010-04-01/Accounts/{AccountSid}/Messages.json. For two-way messaging, configure a webhook URL to receive incoming messages. Consider using a queue for high-volume outbound SMS to avoid rate limits. # PentaCodes Technical Reference and Integration Documentation # Version 1.0 | Last Updated March 2025 # This document contains technical reference material for common integrations and deployment procedures. ## QuickBooks Online Integration The QuickBooks Online API uses OAuth 2.0 for authentication. You will need to register your application in the Intuit Developer Portal to obtain client credentials. The base URL for the API is https://quickbooks.api.intuit.com/v3/company/{realmId}. Common endpoints include /invoice, /customer, /payment, and /bill. Rate limits apply: 500 requests per minute for production apps. Always implement exponential backoff for 429 responses. ## Stripe Payment Integration Stripe provides both client-side (Stripe.js) and server-side APIs. For PCI compliance, never pass raw card numbers through your server—use Stripe Elements or the Payment Intents API. Webhooks are essential for handling asynchronous events like payment succeeded or subscription renewed. Configure your webhook endpoint to verify signatures using the Stripe-Signature header. ## ShipStation Integration The ShipStation API is REST-based. Authentication uses API key and API secret in the Authorization header. Endpoints cover orders, shipments, carriers, and warehouses. Poll for new orders or use webhooks if available for your plan. Batch operations are supported for bulk label creation. ## Twilio SMS Integration Twilio's REST API requires Account SID and Auth Token. The Messaging API endpoint is /2010-04-01/Accounts/{AccountSid}/Messages.json. For two-way messaging, configure a webhook URL to receive incoming messages. Consider using a queue for high-volume outbound SMS to avoid rate limits. # PentaCodes Technical Reference and Integration Documentation # Version 1.0 | Last Updated March 2025 # This document contains technical reference material for common integrations and deployment procedures. ## QuickBooks Online Integration The QuickBooks Online API uses OAuth 2.0 for authentication. You will need to register your application in the Intuit Developer Portal to obtain client credentials. The base URL for the API is https://quickbooks.api.intuit.com/v3/company/{realmId}. Common endpoints include /invoice, /customer, /payment, and /bill. Rate limits apply: 500 requests per minute for production apps. Always implement exponential backoff for 429 responses. ## Stripe Payment Integration Stripe provides both client-side (Stripe.js) and server-side APIs. For PCI compliance, never pass raw card numbers through your server—use Stripe Elements or the Payment Intents API. Webhooks are essential for handling asynchronous events like payment succeeded or subscription renewed. Configure your webhook endpoint to verify signatures using the Stripe-Signature header. ## ShipStation Integration The ShipStation API is REST-based. Authentication uses API key and API secret in the Authorization header. Endpoints cover orders, shipments, carriers, and warehouses. Poll for new orders or use webhooks if available for your plan. Batch operations are supported for bulk label creation. ## Twilio SMS Integration Twilio's REST API requires Account SID and Auth Token. The Messaging API endpoint is /2010-04-01/Accounts/{AccountSid}/Messages.json. For two-way messaging, configure a webhook URL to receive incoming messages. Consider using a queue for high-volume outbound SMS to avoid rate limits. # PentaCodes Technical Reference and Integration Documentation # Version 1.0 | Last Updated March 2025 # This document contains technical reference material for common integrations and deployment procedures. ## QuickBooks Online Integration The QuickBooks Online API uses OAuth 2.0 for authentication. You will need to register your application in the Intuit Developer Portal to obtain client credentials. The base URL for the API is https://quickbooks.api.intuit.com/v3/company/{realmId}. Common endpoints include /invoice, /customer, /payment, and /bill. Rate limits apply: 500 requests per minute for production apps. Always implement exponential backoff for 429 responses. ## Stripe Payment Integration Stripe provides both client-side (Stripe.js) and server-side APIs. For PCI compliance, never pass raw card numbers through your server—use Stripe Elements or the Payment Intents API. Webhooks are essential for handling asynchronous events like payment succeeded or subscription renewed. Configure your webhook endpoint to verify signatures using the Stripe-Signature header. ## ShipStation Integration The ShipStation API is REST-based. Authentication uses API key and API secret in the Authorization header. Endpoints cover orders, shipments, carriers, and warehouses. Poll for new orders or use webhooks if available for your plan. Batch operations are supported for bulk label creation. ## Twilio SMS Integration Twilio's REST API requires Account SID and Auth Token. The Messaging API endpoint is /2010-04-01/Accounts/{AccountSid}/Messages.json. For two-way messaging, configure a webhook URL to receive incoming messages. Consider using a queue for high-volume outbound SMS to avoid rate limits. # PentaCodes Technical Reference and Integration Documentation # Version 1.0 | Last Updated March 2025 # This document contains technical reference material for common integrations and deployment procedures. ## QuickBooks Online Integration The QuickBooks Online API uses OAuth 2.0 for authentication. You will need to register your application in the Intuit Developer Portal to obtain client credentials. The base URL for the API is https://quickbooks.api.intuit.com/v3/company/{realmId}. Common endpoints include /invoice, /customer, /payment, and /bill. Rate limits apply: 500 requests per minute for production apps. Always implement exponential backoff for 429 responses. ## Stripe Payment Integration Stripe provides both client-side (Stripe.js) and server-side APIs. For PCI compliance, never pass raw card numbers through your server—use Stripe Elements or the Payment Intents API. Webhooks are essential for handling asynchronous events like payment succeeded or subscription renewed. Configure your webhook endpoint to verify signatures using the Stripe-Signature header. ## ShipStation Integration The ShipStation API is REST-based. Authentication uses API key and API secret in the Authorization header. Endpoints cover orders, shipments, carriers, and warehouses. Poll for new orders or use webhooks if available for your plan. Batch operations are supported for bulk label creation. ## Twilio SMS Integration Twilio's REST API requires Account SID and Auth Token. The Messaging API endpoint is /2010-04-01/Accounts/{AccountSid}/Messages.json. For two-way messaging, configure a webhook URL to receive incoming messages. Consider using a queue for high-volume outbound SMS to avoid rate limits. # PentaCodes Technical Reference and Integration Documentation # Version 1.0 | Last Updated March 2025 # This document contains technical reference material for common integrations and deployment procedures. ## QuickBooks Online Integration The QuickBooks Online API uses OAuth 2.0 for authentication. You will need to register your application in the Intuit Developer Portal to obtain client credentials. The base URL for the API is https://quickbooks.api.intuit.com/v3/company/{realmId}. Common endpoints include /invoice, /customer, /payment, and /bill. Rate limits apply: 500 requests per minute for production apps. Always implement exponential backoff for 429 responses. ## Stripe Payment Integration Stripe provides both client-side (Stripe.js) and server-side APIs. For PCI compliance, never pass raw card numbers through your server—use Stripe Elements or the Payment Intents API. Webhooks are essential for handling asynchronous events like payment succeeded or subscription renewed. Configure your webhook endpoint to verify signatures using the Stripe-Signature header. ## ShipStation Integration The ShipStation API is REST-based. Authentication uses API key and API secret in the Authorization header. Endpoints cover orders, shipments, carriers, and warehouses. Poll for new orders or use webhooks if available for your plan. Batch operations are supported for bulk label creation. ## Twilio SMS Integration Twilio's REST API requires Account SID and Auth Token. The Messaging API endpoint is /2010-04-01/Accounts/{AccountSid}/Messages.json. For two-way messaging, configure a webhook URL to receive incoming messages. Consider using a queue for high-volume outbound SMS to avoid rate limits. # PentaCodes Technical Reference and Integration Documentation # Version 1.0 | Last Updated March 2025 # This document contains technical reference material for common integrations and deployment procedures. ## QuickBooks Online Integration The QuickBooks Online API uses OAuth 2.0 for authentication. You will need to register your application in the Intuit Developer Portal to obtain client credentials. The base URL for the API is https://quickbooks.api.intuit.com/v3/company/{realmId}. Common endpoints include /invoice, /customer, /payment, and /bill. Rate limits apply: 500 requests per minute for production apps. Always implement exponential backoff for 429 responses. ## Stripe Payment Integration Stripe provides both client-side (Stripe.js) and server-side APIs. For PCI compliance, never pass raw card numbers through your server—use Stripe Elements or the Payment Intents API. Webhooks are essential for handling asynchronous events like payment succeeded or subscription renewed. Configure your webhook endpoint to verify signatures using the Stripe-Signature header. ## ShipStation Integration The ShipStation API is REST-based. Authentication uses API key and API secret in the Authorization header. Endpoints cover orders, shipments, carriers, and warehouses. Poll for new orders or use webhooks if available for your plan. Batch operations are supported for bulk label creation. ## Twilio SMS Integration Twilio's REST API requires Account SID and Auth Token. The Messaging API endpoint is /2010-04-01/Accounts/{AccountSid}/Messages.json. For two-way messaging, configure a webhook URL to receive incoming messages. Consider using a queue for high-volume outbound SMS to avoid rate limits. # PentaCodes Technical Reference and Integration Documentation # Version 1.0 | Last Updated March 2025 # This document contains technical reference material for common integrations and deployment procedures. ## QuickBooks Online Integration The QuickBooks Online API uses OAuth 2.0 for authentication. You will need to register your application in the Intuit Developer Portal to obtain client credentials. The base URL for the API is https://quickbooks.api.intuit.com/v3/company/{realmId}. Common endpoints include /invoice, /customer, /payment, and /bill. Rate limits apply: 500 requests per minute for production apps. Always implement exponential backoff for 429 responses. ## Stripe Payment Integration Stripe provides both client-side (Stripe.js) and server-side APIs. For PCI compliance, never pass raw card numbers through your server—use Stripe Elements or the Payment Intents API. Webhooks are essential for handling asynchronous events like payment succeeded or subscription renewed. Configure your webhook endpoint to verify signatures using the Stripe-Signature header. ## ShipStation Integration The ShipStation API is REST-based. Authentication uses API key and API secret in the Authorization header. Endpoints cover orders, shipments, carriers, and warehouses. Poll for new orders or use webhooks if available for your plan. Batch operations are supported for bulk label creation. ## Twilio SMS Integration Twilio's REST API requires Account SID and Auth Token. The Messaging API endpoint is /2010-04-01/Accounts/{AccountSid}/Messages.json. For two-way messaging, configure a webhook URL to receive incoming messages. Consider using a queue for high-volume outbound SMS to avoid rate limits. # PentaCodes Technical Reference and Integration Documentation # Version 1.0 | Last Updated March 2025 # This document contains technical reference material for common integrations and deployment procedures. ## QuickBooks Online Integration The QuickBooks Online API uses OAuth 2.0 for authentication. You will need to register your application in the Intuit Developer Portal to obtain client credentials. The base URL for the API is https://quickbooks.api.intuit.com/v3/company/{realmId}. Common endpoints include /invoice, /customer, /payment, and /bill. Rate limits apply: 500 requests per minute for production apps. Always implement exponential backoff for 429 responses. ## Stripe Payment Integration Stripe provides both client-side (Stripe.js) and server-side APIs. For PCI compliance, never pass raw card numbers through your server—use Stripe Elements or the Payment Intents API. Webhooks are essential for handling asynchronous events like payment succeeded or subscription renewed. Configure your webhook endpoint to verify signatures using the Stripe-Signature header. ## ShipStation Integration The ShipStation API is REST-based. Authentication uses API key and API secret in the Authorization header. Endpoints cover orders, shipments, carriers, and warehouses. Poll for new orders or use webhooks if available for your plan. Batch operations are supported for bulk label creation. ## Twilio SMS Integration Twilio's REST API requires Account SID and Auth Token. The Messaging API endpoint is /2010-04-01/Accounts/{AccountSid}/Messages.json. For two-way messaging, configure a webhook URL to receive incoming messages. Consider using a queue for high-volume outbound SMS to avoid rate limits. # PentaCodes Technical Reference and Integration Documentation # Version 1.0 | Last Updated March 2025 # This document contains technical reference material for common integrations and deployment procedures. ## QuickBooks Online Integration The QuickBooks Online API uses OAuth 2.0 for authentication. You will need to register your application in the Intuit Developer Portal to obtain client credentials. The base URL for the API is https://quickbooks.api.intuit.com/v3/company/{realmId}. Common endpoints include /invoice, /customer, /payment, and /bill. Rate limits apply: 500 requests per minute for production apps. Always implement exponential backoff for 429 responses. ## Stripe Payment Integration Stripe provides both client-side (Stripe.js) and server-side APIs. For PCI compliance, never pass raw card numbers through your server—use Stripe Elements or the Payment Intents API. Webhooks are essential for handling asynchronous events like payment succeeded or subscription renewed. Configure your webhook endpoint to verify signatures using the Stripe-Signature header. ## ShipStation Integration The ShipStation API is REST-based. Authentication uses API key and API secret in the Authorization header. Endpoints cover orders, shipments, carriers, and warehouses. Poll for new orders or use webhooks if available for your plan. Batch operations are supported for bulk label creation. ## Twilio SMS Integration Twilio's REST API requires Account SID and Auth Token. The Messaging API endpoint is /2010-04-01/Accounts/{AccountSid}/Messages.json. For two-way messaging, configure a webhook URL to receive incoming messages. Consider using a queue for high-volume outbound SMS to avoid rate limits. # PentaCodes Technical Reference and Integration Documentation # Version 1.0 | Last Updated March 2025 # This document contains technical reference material for common integrations and deployment procedures. ## QuickBooks Online Integration The QuickBooks Online API uses OAuth 2.0 for authentication. You will need to register your application in the Intuit Developer Portal to obtain client credentials. The base URL for the API is https://quickbooks.api.intuit.com/v3/company/{realmId}. Common endpoints include /invoice, /customer, /payment, and /bill. Rate limits apply: 500 requests per minute for production apps. Always implement exponential backoff for 429 responses. ## Stripe Payment Integration Stripe provides both client-side (Stripe.js) and server-side APIs. For PCI compliance, never pass raw card numbers through your server—use Stripe Elements or the Payment Intents API. Webhooks are essential for handling asynchronous events like payment succeeded or subscription renewed. Configure your webhook endpoint to verify signatures using the Stripe-Signature header. ## ShipStation Integration The ShipStation API is REST-based. Authentication uses API key and API secret in the Authorization header. Endpoints cover orders, shipments, carriers, and warehouses. Poll for new orders or use webhooks if available for your plan. Batch operations are supported for bulk label creation. ## Twilio SMS Integration Twilio's REST API requires Account SID and Auth Token. The Messaging API endpoint is /2010-04-01/Accounts/{AccountSid}/Messages.json. For two-way messaging, configure a webhook URL to receive incoming messages. Consider using a queue for high-volume outbound SMS to avoid rate limits. # PentaCodes Technical Reference and Integration Documentation # Version 1.0 | Last Updated March 2025 # This document contains technical reference material for common integrations and deployment procedures. ## QuickBooks Online Integration The QuickBooks Online API uses OAuth 2.0 for authentication. You will need to register your application in the Intuit Developer Portal to obtain client credentials. The base URL for the API is https://quickbooks.api.intuit.com/v3/company/{realmId}. Common endpoints include /invoice, /customer, /payment, and /bill. Rate limits apply: 500 requests per minute for production apps. Always implement exponential backoff for 429 responses. ## Stripe Payment Integration Stripe provides both client-side (Stripe.js) and server-side APIs. For PCI compliance, never pass raw card numbers through your server—use Stripe Elements or the Payment Intents API. Webhooks are essential for handling asynchronous events like payment succeeded or subscription renewed. Configure your webhook endpoint to verify signatures using the Stripe-Signature header. ## ShipStation Integration The ShipStation API is REST-based. Authentication uses API key and API secret in the Authorization header. Endpoints cover orders, shipments, carriers, and warehouses. Poll for new orders or use webhooks if available for your plan. Batch operations are supported for bulk label creation. ## Twilio SMS Integration Twilio's REST API requires Account SID and Auth Token. The Messaging API endpoint is /2010-04-01/Accounts/{AccountSid}/Messages.json. For two-way messaging, configure a webhook URL to receive incoming messages. Consider using a queue for high-volume outbound SMS to avoid rate limits. # PentaCodes Technical Reference and Integration Documentation # Version 1.0 | Last Updated March 2025 # This document contains technical reference material for common integrations and deployment procedures. ## QuickBooks Online Integration The QuickBooks Online API uses OAuth 2.0 for authentication. You will need to register your application in the Intuit Developer Portal to obtain client credentials. The base URL for the API is https://quickbooks.api.intuit.com/v3/company/{realmId}. Common endpoints include /invoice, /customer, /payment, and /bill. Rate limits apply: 500 requests per minute for production apps. Always implement exponential backoff for 429 responses. ## Stripe Payment Integration Stripe provides both client-side (Stripe.js) and server-side APIs. For PCI compliance, never pass raw card numbers through your server—use Stripe Elements or the Payment Intents API. Webhooks are essential for handling asynchronous events like payment succeeded or subscription renewed. Configure your webhook endpoint to verify signatures using the Stripe-Signature header. ## ShipStation Integration The ShipStation API is REST-based. Authentication uses API key and API secret in the Authorization header. Endpoints cover orders, shipments, carriers, and warehouses. Poll for new orders or use webhooks if available for your plan. Batch operations are supported for bulk label creation. ## Twilio SMS Integration Twilio's REST API requires Account SID and Auth Token. The Messaging API endpoint is /2010-04-01/Accounts/{AccountSid}/Messages.json. For two-way messaging, configure a webhook URL to receive incoming messages. Consider using a queue for high-volume outbound SMS to avoid rate limits. # PentaCodes Technical Reference and Integration Documentation # Version 1.0 | Last Updated March 2025 # This document contains technical reference material for common integrations and deployment procedures. ## QuickBooks Online Integration The QuickBooks Online API uses OAuth 2.0 for authentication. You will need to register your application in the Intuit Developer Portal to obtain client credentials. The base URL for the API is https://quickbooks.api.intuit.com/v3/company/{realmId}. Common endpoints include /invoice, /customer, /payment, and /bill. Rate limits apply: 500 requests per minute for production apps. Always implement exponential backoff for 429 responses. ## Stripe Payment Integration Stripe provides both client-side (Stripe.js) and server-side APIs. For PCI compliance, never pass raw card numbers through your server—use Stripe Elements or the Payment Intents API. Webhooks are essential for handling asynchronous events like payment succeeded or subscription renewed. Configure your webhook endpoint to verify signatures using the Stripe-Signature header. ## ShipStation Integration The ShipStation API is REST-based. Authentication uses API key and API secret in the Authorization header. Endpoints cover orders, shipments, carriers, and warehouses. Poll for new orders or use webhooks if available for your plan. Batch operations are supported for bulk label creation. ## Twilio SMS Integration Twilio's REST API requires Account SID and Auth Token. The Messaging API endpoint is /2010-04-01/Accounts/{AccountSid}/Messages.json. For two-way messaging, configure a webhook URL to receive incoming messages. Consider using a queue for high-volume outbound SMS to avoid rate limits. # PentaCodes Technical Reference and Integration Documentation # Version 1.0 | Last Updated March 2025 # This document contains technical reference material for common integrations and deployment procedures. ## QuickBooks Online Integration The QuickBooks Online API uses OAuth 2.0 for authentication. You will need to register your application in the Intuit Developer Portal to obtain client credentials. The base URL for the API is https://quickbooks.api.intuit.com/v3/company/{realmId}. Common endpoints include /invoice, /customer, /payment, and /bill. Rate limits apply: 500 requests per minute for production apps. Always implement exponential backoff for 429 responses. ## Stripe Payment Integration Stripe provides both client-side (Stripe.js) and server-side APIs. For PCI compliance, never pass raw card numbers through your server—use Stripe Elements or the Payment Intents API. Webhooks are essential for handling asynchronous events like payment succeeded or subscription renewed. Configure your webhook endpoint to verify signatures using the Stripe-Signature header. ## ShipStation Integration The ShipStation API is REST-based. Authentication uses API key and API secret in the Authorization header. Endpoints cover orders, shipments, carriers, and warehouses. Poll for new orders or use webhooks if available for your plan. Batch operations are supported for bulk label creation. ## Twilio SMS Integration Twilio's REST API requires Account SID and Auth Token. The Messaging API endpoint is /2010-04-01/Accounts/{AccountSid}/Messages.json. For two-way messaging, configure a webhook URL to receive incoming messages. Consider using a queue for high-volume outbound SMS to avoid rate limits. # PentaCodes Technical Reference and Integration Documentation # Version 1.0 | Last Updated March 2025 # This document contains technical reference material for common integrations and deployment procedures. ## QuickBooks Online Integration The QuickBooks Online API uses OAuth 2.0 for authentication. You will need to register your application in the Intuit Developer Portal to obtain client credentials. The base URL for the API is https://quickbooks.api.intuit.com/v3/company/{realmId}. Common endpoints include /invoice, /customer, /payment, and /bill. Rate limits apply: 500 requests per minute for production apps. Always implement exponential backoff for 429 responses. ## Stripe Payment Integration Stripe provides both client-side (Stripe.js) and server-side APIs. For PCI compliance, never pass raw card numbers through your server—use Stripe Elements or the Payment Intents API. Webhooks are essential for handling asynchronous events like payment succeeded or subscription renewed. Configure your webhook endpoint to verify signatures using the Stripe-Signature header. ## ShipStation Integration The ShipStation API is REST-based. Authentication uses API key and API secret in the Authorization header. Endpoints cover orders, shipments, carriers, and warehouses. Poll for new orders or use webhooks if available for your plan. Batch operations are supported for bulk label creation. ## Twilio SMS Integration Twilio's REST API requires Account SID and Auth Token. The Messaging API endpoint is /2010-04-01/Accounts/{AccountSid}/Messages.json. For two-way messaging, configure a webhook URL to receive incoming messages. Consider using a queue for high-volume outbound SMS to avoid rate limits. # PentaCodes Technical Reference and Integration Documentation # Version 1.0 | Last Updated March 2025 # This document contains technical reference material for common integrations and deployment procedures. ## QuickBooks Online Integration The QuickBooks Online API uses OAuth 2.0 for authentication. You will need to register your application in the Intuit Developer Portal to obtain client credentials. The base URL for the API is https://quickbooks.api.intuit.com/v3/company/{realmId}. Common endpoints include /invoice, /customer, /payment, and /bill. Rate limits apply: 500 requests per minute for production apps. Always implement exponential backoff for 429 responses. ## Stripe Payment Integration Stripe provides both client-side (Stripe.js) and server-side APIs. For PCI compliance, never pass raw card numbers through your server—use Stripe Elements or the Payment Intents API. Webhooks are essential for handling asynchronous events like payment succeeded or subscription renewed. Configure your webhook endpoint to verify signatures using the Stripe-Signature header. ## ShipStation Integration The ShipStation API is REST-based. Authentication uses API key and API secret in the Authorization header. Endpoints cover orders, shipments, carriers, and warehouses. Poll for new orders or use webhooks if available for your plan. Batch operations are supported for bulk label creation. ## Twilio SMS Integration Twilio's REST API requires Account SID and Auth Token. The Messaging API endpoint is /2010-04-01/Accounts/{AccountSid}/Messages.json. For two-way messaging, configure a webhook URL to receive incoming messages. Consider using a queue for high-volume outbound SMS to avoid rate limits. # PentaCodes Technical Reference and Integration Documentation # Version 1.0 | Last Updated March 2025 # This document contains technical reference material for common integrations and deployment procedures. ## QuickBooks Online Integration The QuickBooks Online API uses OAuth 2.0 for authentication. You will need to register your application in the Intuit Developer Portal to obtain client credentials. The base URL for the API is https://quickbooks.api.intuit.com/v3/company/{realmId}. Common endpoints include /invoice, /customer, /payment, and /bill. Rate limits apply: 500 requests per minute for production apps. Always implement exponential backoff for 429 responses. ## Stripe Payment Integration Stripe provides both client-side (Stripe.js) and server-side APIs. For PCI compliance, never pass raw card numbers through your server—use Stripe Elements or the Payment Intents API. Webhooks are essential for handling asynchronous events like payment succeeded or subscription renewed. Configure your webhook endpoint to verify signatures using the Stripe-Signature header. ## ShipStation Integration The ShipStation API is REST-based. Authentication uses API key and API secret in the Authorization header. Endpoints cover orders, shipments, carriers, and warehouses. Poll for new orders or use webhooks if available for your plan. Batch operations are supported for bulk label creation. ## Twilio SMS Integration Twilio's REST API requires Account SID and Auth Token. The Messaging API endpoint is /2010-04-01/Accounts/{AccountSid}/Messages.json. For two-way messaging, configure a webhook URL to receive incoming messages. Consider using a queue for high-volume outbound SMS to avoid rate limits. # PentaCodes Technical Reference and Integration Documentation # Version 1.0 | Last Updated March 2025 # This document contains technical reference material for common integrations and deployment procedures. ## QuickBooks Online Integration The QuickBooks Online API uses OAuth 2.0 for authentication. You will need to register your application in the Intuit Developer Portal to obtain client credentials. The base URL for the API is https://quickbooks.api.intuit.com/v3/company/{realmId}. Common endpoints include /invoice, /customer, /payment, and /bill. Rate limits apply: 500 requests per minute for production apps. Always implement exponential backoff for 429 responses. ## Stripe Payment Integration Stripe provides both client-side (Stripe.js) and server-side APIs. For PCI compliance, never pass raw card numbers through your server—use Stripe Elements or the Payment Intents API. Webhooks are essential for handling asynchronous events like payment succeeded or subscription renewed. Configure your webhook endpoint to verify signatures using the Stripe-Signature header. ## ShipStation Integration The ShipStation API is REST-based. Authentication uses API key and API secret in the Authorization header. Endpoints cover orders, shipments, carriers, and warehouses. Poll for new orders or use webhooks if available for your plan. Batch operations are supported for bulk label creation. ## Twilio SMS Integration Twilio's REST API requires Account SID and Auth Token. The Messaging API endpoint is /2010-04-01/Accounts/{AccountSid}/Messages.json. For two-way messaging, configure a webhook URL to receive incoming messages. Consider using a queue for high-volume outbound SMS to avoid rate limits. # PentaCodes Technical Reference and Integration Documentation # Version 1.0 | Last Updated March 2025 # This document contains technical reference material for common integrations and deployment procedures. ## QuickBooks Online Integration The QuickBooks Online API uses OAuth 2.0 for authentication. You will need to register your application in the Intuit Developer Portal to obtain client credentials. The base URL for the API is https://quickbooks.api.intuit.com/v3/company/{realmId}. Common endpoints include /invoice, /customer, /payment, and /bill. Rate limits apply: 500 requests per minute for production apps. Always implement exponential backoff for 429 responses. ## Stripe Payment Integration Stripe provides both client-side (Stripe.js) and server-side APIs. For PCI compliance, never pass raw card numbers through your server—use Stripe Elements or the Payment Intents API. Webhooks are essential for handling asynchronous events like payment succeeded or subscription renewed. Configure your webhook endpoint to verify signatures using the Stripe-Signature header. ## ShipStation Integration The ShipStation API is REST-based. Authentication uses API key and API secret in the Authorization header. Endpoints cover orders, shipments, carriers, and warehouses. Poll for new orders or use webhooks if available for your plan. Batch operations are supported for bulk label creation. ## Twilio SMS Integration Twilio's REST API requires Account SID and Auth Token. The Messaging API endpoint is /2010-04-01/Accounts/{AccountSid}/Messages.json. For two-way messaging, configure a webhook URL to receive incoming messages. Consider using a queue for high-volume outbound SMS to avoid rate limits. # PentaCodes Technical Reference and Integration Documentation # Version 1.0 | Last Updated March 2025 # This document contains technical reference material for common integrations and deployment procedures. ## QuickBooks Online Integration The QuickBooks Online API uses OAuth 2.0 for authentication. You will need to register your application in the Intuit Developer Portal to obtain client credentials. The base URL for the API is https://quickbooks.api.intuit.com/v3/company/{realmId}. Common endpoints include /invoice, /customer, /payment, and /bill. Rate limits apply: 500 requests per minute for production apps. Always implement exponential backoff for 429 responses. ## Stripe Payment Integration Stripe provides both client-side (Stripe.js) and server-side APIs. For PCI compliance, never pass raw card numbers through your server—use Stripe Elements or the Payment Intents API. Webhooks are essential for handling asynchronous events like payment succeeded or subscription renewed. Configure your webhook endpoint to verify signatures using the Stripe-Signature header. ## ShipStation Integration The ShipStation API is REST-based. Authentication uses API key and API secret in the Authorization header. Endpoints cover orders, shipments, carriers, and warehouses. Poll for new orders or use webhooks if available for your plan. Batch operations are supported for bulk label creation. ## Twilio SMS Integration Twilio's REST API requires Account SID and Auth Token. The Messaging API endpoint is /2010-04-01/Accounts/{AccountSid}/Messages.json. For two-way messaging, configure a webhook URL to receive incoming messages. Consider using a queue for high-volume outbound SMS to avoid rate limits. # PentaCodes Technical Reference and Integration Documentation # Version 1.0 | Last Updated March 2025 # This document contains technical reference material for common integrations and deployment procedures. ## QuickBooks Online Integration The QuickBooks Online API uses OAuth 2.0 for authentication. You will need to register your application in the Intuit Developer Portal to obtain client credentials. The base URL for the API is https://quickbooks.api.intuit.com/v3/company/{realmId}. Common endpoints include /invoice, /customer, /payment, and /bill. Rate limits apply: 500 requests per minute for production apps. Always implement exponential backoff for 429 responses. ## Stripe Payment Integration Stripe provides both client-side (Stripe.js) and server-side APIs. For PCI compliance, never pass raw card numbers through your server—use Stripe Elements or the Payment Intents API. Webhooks are essential for handling asynchronous events like payment succeeded or subscription renewed. Configure your webhook endpoint to verify signatures using the Stripe-Signature header. ## ShipStation Integration The ShipStation API is REST-based. Authentication uses API key and API secret in the Authorization header. Endpoints cover orders, shipments, carriers, and warehouses. Poll for new orders or use webhooks if available for your plan. Batch operations are supported for bulk label creation. ## Twilio SMS Integration Twilio's REST API requires Account SID and Auth Token. The Messaging API endpoint is /2010-04-01/Accounts/{AccountSid}/Messages.json. For two-way messaging, configure a webhook URL to receive incoming messages. Consider using a queue for high-volume outbound SMS to avoid rate limits. # PentaCodes Technical Reference and Integration Documentation # Version 1.0 | Last Updated March 2025 # This document contains technical reference material for common integrations and deployment procedures. ## QuickBooks Online Integration The QuickBooks Online API uses OAuth 2.0 for authentication. You will need to register your application in the Intuit Developer Portal to obtain client credentials. The base URL for the API is https://quickbooks.api.intuit.com/v3/company/{realmId}. Common endpoints include /invoice, /customer, /payment, and /bill. Rate limits apply: 500 requests per minute for production apps. Always implement exponential backoff for 429 responses. ## Stripe Payment Integration Stripe provides both client-side (Stripe.js) and server-side APIs. For PCI compliance, never pass raw card numbers through your server—use Stripe Elements or the Payment Intents API. Webhooks are essential for handling asynchronous events like payment succeeded or subscription renewed. Configure your webhook endpoint to verify signatures using the Stripe-Signature header. ## ShipStation Integration The ShipStation API is REST-based. Authentication uses API key and API secret in the Authorization header. Endpoints cover orders, shipments, carriers, and warehouses. Poll for new orders or use webhooks if available for your plan. Batch operations are supported for bulk label creation. ## Twilio SMS Integration Twilio's REST API requires Account SID and Auth Token. The Messaging API endpoint is /2010-04-01/Accounts/{AccountSid}/Messages.json. For two-way messaging, configure a webhook URL to receive incoming messages. Consider using a queue for high-volume outbound SMS to avoid rate limits. # PentaCodes Technical Reference and Integration Documentation # Version 1.0 | Last Updated March 2025 # This document contains technical reference material for common integrations and deployment procedures. ## QuickBooks Online Integration The QuickBooks Online API uses OAuth 2.0 for authentication. You will need to register your application in the Intuit Developer Portal to obtain client credentials. The base URL for the API is https://quickbooks.api.intuit.com/v3/company/{realmId}. Common endpoints include /invoice, /customer, /payment, and /bill. Rate limits apply: 500 requests per minute for production apps. Always implement exponential backoff for 429 responses. ## Stripe Payment Integration Stripe provides both client-side (Stripe.js) and server-side APIs. For PCI compliance, never pass raw card numbers through your server—use Stripe Elements or the Payment Intents API. Webhooks are essential for handling asynchronous events like payment succeeded or subscription renewed. Configure your webhook endpoint to verify signatures using the Stripe-Signature header. ## ShipStation Integration The ShipStation API is REST-based. Authentication uses API key and API secret in the Authorization header. Endpoints cover orders, shipments, carriers, and warehouses. Poll for new orders or use webhooks if available for your plan. Batch operations are supported for bulk label creation. ## Twilio SMS Integration Twilio's REST API requires Account SID and Auth Token. The Messaging API endpoint is /2010-04-01/Accounts/{AccountSid}/Messages.json. For two-way messaging, configure a webhook URL to receive incoming messages. Consider using a queue for high-volume outbound SMS to avoid rate limits. # PentaCodes Technical Reference and Integration Documentation # Version 1.0 | Last Updated March 2025 # This document contains technical reference material for common integrations and deployment procedures. ## QuickBooks Online Integration The QuickBooks Online API uses OAuth 2.0 for authentication. You will need to register your application in the Intuit Developer Portal to obtain client credentials. The base URL for the API is https://quickbooks.api.intuit.com/v3/company/{realmId}. Common endpoints include /invoice, /customer, /payment, and /bill. Rate limits apply: 500 requests per minute for production apps. Always implement exponential backoff for 429 responses. ## Stripe Payment Integration Stripe provides both client-side (Stripe.js) and server-side APIs. For PCI compliance, never pass raw card numbers through your server—use Stripe Elements or the Payment Intents API. Webhooks are essential for handling asynchronous events like payment succeeded or subscription renewed. Configure your webhook endpoint to verify signatures using the Stripe-Signature header. ## ShipStation Integration The ShipStation API is REST-based. Authentication uses API key and API secret in the Authorization header. Endpoints cover orders, shipments, carriers, and warehouses. Poll for new orders or use webhooks if available for your plan. Batch operations are supported for bulk label creation. ## Twilio SMS Integration Twilio's REST API requires Account SID and Auth Token. The Messaging API endpoint is /2010-04-01/Accounts/{AccountSid}/Messages.json. For two-way messaging, configure a webhook URL to receive incoming messages. Consider using a queue for high-volume outbound SMS to avoid rate limits. # PentaCodes Technical Reference and Integration Documentation # Version 1.0 | Last Updated March 2025 # This document contains technical reference material for common integrations and deployment procedures. ## QuickBooks Online Integration The QuickBooks Online API uses OAuth 2.0 for authentication. You will need to register your application in the Intuit Developer Portal to obtain client credentials. The base URL for the API is https://quickbooks.api.intuit.com/v3/company/{realmId}. Common endpoints include /invoice, /customer, /payment, and /bill. Rate limits apply: 500 requests per minute for production apps. Always implement exponential backoff for 429 responses. ## Stripe Payment Integration Stripe provides both client-side (Stripe.js) and server-side APIs. For PCI compliance, never pass raw card numbers through your server—use Stripe Elements or the Payment Intents API. Webhooks are essential for handling asynchronous events like payment succeeded or subscription renewed. Configure your webhook endpoint to verify signatures using the Stripe-Signature header. ## ShipStation Integration The ShipStation API is REST-based. Authentication uses API key and API secret in the Authorization header. Endpoints cover orders, shipments, carriers, and warehouses. Poll for new orders or use webhooks if available for your plan. Batch operations are supported for bulk label creation. ## Twilio SMS Integration Twilio's REST API requires Account SID and Auth Token. The Messaging API endpoint is /2010-04-01/Accounts/{AccountSid}/Messages.json. For two-way messaging, configure a webhook URL to receive incoming messages. Consider using a queue for high-volume outbound SMS to avoid rate limits. # PentaCodes Technical Reference and Integration Documentation # Version 1.0 | Last Updated March 2025 # This document contains technical reference material for common integrations and deployment procedures. ## QuickBooks Online Integration The QuickBooks Online API uses OAuth 2.0 for authentication. You will need to register your application in the Intuit Developer Portal to obtain client credentials. The base URL for the API is https://quickbooks.api.intuit.com/v3/company/{realmId}. Common endpoints include /invoice, /customer, /payment, and /bill. Rate limits apply: 500 requests per minute for production apps. Always implement exponential backoff for 429 responses. ## Stripe Payment Integration Stripe provides both client-side (Stripe.js) and server-side APIs. For PCI compliance, never pass raw card numbers through your server—use Stripe Elements or the Payment Intents API. Webhooks are essential for handling asynchronous events like payment succeeded or subscription renewed. Configure your webhook endpoint to verify signatures using the Stripe-Signature header. ## ShipStation Integration The ShipStation API is REST-based. Authentication uses API key and API secret in the Authorization header. Endpoints cover orders, shipments, carriers, and warehouses. Poll for new orders or use webhooks if available for your plan. Batch operations are supported for bulk label creation. ## Twilio SMS Integration Twilio's REST API requires Account SID and Auth Token. The Messaging API endpoint is /2010-04-01/Accounts/{AccountSid}/Messages.json. For two-way messaging, configure a webhook URL to receive incoming messages. Consider using a queue for high-volume outbound SMS to avoid rate limits. # PentaCodes Technical Reference and Integration Documentation # Version 1.0 | Last Updated March 2025 # This document contains technical reference material for common integrations and deployment procedures. ## QuickBooks Online Integration The QuickBooks Online API uses OAuth 2.0 for authentication. You will need to register your application in the Intuit Developer Portal to obtain client credentials. The base URL for the API is https://quickbooks.api.intuit.com/v3/company/{realmId}. Common endpoints include /invoice, /customer, /payment, and /bill. Rate limits apply: 500 requests per minute for production apps. Always implement exponential backoff for 429 responses. ## Stripe Payment Integration Stripe provides both client-side (Stripe.js) and server-side APIs. For PCI compliance, never pass raw card numbers through your server—use Stripe Elements or the Payment Intents API. Webhooks are essential for handling asynchronous events like payment succeeded or subscription renewed. Configure your webhook endpoint to verify signatures using the Stripe-Signature header. ## ShipStation Integration The ShipStation API is REST-based. Authentication uses API key and API secret in the Authorization header. Endpoints cover orders, shipments, carriers, and warehouses. Poll for new orders or use webhooks if available for your plan. Batch operations are supported for bulk label creation. ## Twilio SMS Integration Twilio's REST API requires Account SID and Auth Token. The Messaging API endpoint is /2010-04-01/Accounts/{AccountSid}/Messages.json. For two-way messaging, configure a webhook URL to receive incoming messages. Consider using a queue for high-volume outbound SMS to avoid rate limits. # PentaCodes Technical Reference and Integration Documentation # Version 1.0 | Last Updated March 2025 # This document contains technical reference material for common integrations and deployment procedures. ## QuickBooks Online Integration The QuickBooks Online API uses OAuth 2.0 for authentication. You will need to register your application in the Intuit Developer Portal to obtain client credentials. The base URL for the API is https://quickbooks.api.intuit.com/v3/company/{realmId}. Common endpoints include /invoice, /customer, /payment, and /bill. Rate limits apply: 500 requests per minute for production apps. Always implement exponential backoff for 429 responses. ## Stripe Payment Integration Stripe provides both client-side (Stripe.js) and server-side APIs. For PCI compliance, never pass raw card numbers through your server—use Stripe Elements or the Payment Intents API. Webhooks are essential for handling asynchronous events like payment succeeded or subscription renewed. Configure your webhook endpoint to verify signatures using the Stripe-Signature header. ## ShipStation Integration The ShipStation API is REST-based. Authentication uses API key and API secret in the Authorization header. Endpoints cover orders, shipments, carriers, and warehouses. Poll for new orders or use webhooks if available for your plan. Batch operations are supported for bulk label creation. ## Twilio SMS Integration Twilio's REST API requires Account SID and Auth Token. The Messaging API endpoint is /2010-04-01/Accounts/{AccountSid}/Messages.json. For two-way messaging, configure a webhook URL to receive incoming messages. Consider using a queue for high-volume outbound SMS to avoid rate limits. # PentaCodes Technical Reference and Integration Documentation # Version 1.0 | Last Updated March 2025 # This document contains technical reference material for common integrations and deployment procedures. ## QuickBooks Online Integration The QuickBooks Online API uses OAuth 2.0 for authentication. You will need to register your application in the Intuit Developer Portal to obtain client credentials. The base URL for the API is https://quickbooks.api.intuit.com/v3/company/{realmId}. Common endpoints include /invoice, /customer, /payment, and /bill. Rate limits apply: 500 requests per minute for production apps. Always implement exponential backoff for 429 responses. ## Stripe Payment Integration Stripe provides both client-side (Stripe.js) and server-side APIs. For PCI compliance, never pass raw card numbers through your server—use Stripe Elements or the Payment Intents API. Webhooks are essential for handling asynchronous events like payment succeeded or subscription renewed. Configure your webhook endpoint to verify signatures using the Stripe-Signature header. ## ShipStation Integration The ShipStation API is REST-based. Authentication uses API key and API secret in the Authorization header. Endpoints cover orders, shipments, carriers, and warehouses. Poll for new orders or use webhooks if available for your plan. Batch operations are supported for bulk label creation. ## Twilio SMS Integration Twilio's REST API requires Account SID and Auth Token. The Messaging API endpoint is /2010-04-01/Accounts/{AccountSid}/Messages.json. For two-way messaging, configure a webhook URL to receive incoming messages. Consider using a queue for high-volume outbound SMS to avoid rate limits. # PentaCodes Technical Reference and Integration Documentation # Version 1.0 | Last Updated March 2025 # This document contains technical reference material for common integrations and deployment procedures. ## QuickBooks Online Integration The QuickBooks Online API uses OAuth 2.0 for authentication. You will need to register your application in the Intuit Developer Portal to obtain client credentials. The base URL for the API is https://quickbooks.api.intuit.com/v3/company/{realmId}. Common endpoints include /invoice, /customer, /payment, and /bill. Rate limits apply: 500 requests per minute for production apps. Always implement exponential backoff for 429 responses. ## Stripe Payment Integration Stripe provides both client-side (Stripe.js) and server-side APIs. For PCI compliance, never pass raw card numbers through your server—use Stripe Elements or the Payment Intents API. Webhooks are essential for handling asynchronous events like payment succeeded or subscription renewed. Configure your webhook endpoint to verify signatures using the Stripe-Signature header. ## ShipStation Integration The ShipStation API is REST-based. Authentication uses API key and API secret in the Authorization header. Endpoints cover orders, shipments, carriers, and warehouses. Poll for new orders or use webhooks if available for your plan. Batch operations are supported for bulk label creation. ## Twilio SMS Integration Twilio's REST API requires Account SID and Auth Token. The Messaging API endpoint is /2010-04-01/Accounts/{AccountSid}/Messages.json. For two-way messaging, configure a webhook URL to receive incoming messages. Consider using a queue for high-volume outbound SMS to avoid rate limits. # PentaCodes Technical Reference and Integration Documentation # Version 1.0 | Last Updated March 2025 # This document contains technical reference material for common integrations and deployment procedures. ## QuickBooks Online Integration The QuickBooks Online API uses OAuth 2.0 for authentication. You will need to register your application in the Intuit Developer Portal to obtain client credentials. The base URL for the API is https://quickbooks.api.intuit.com/v3/company/{realmId}. Common endpoints include /invoice, /customer, /payment, and /bill. Rate limits apply: 500 requests per minute for production apps. Always implement exponential backoff for 429 responses. ## Stripe Payment Integration Stripe provides both client-side (Stripe.js) and server-side APIs. For PCI compliance, never pass raw card numbers through your server—use Stripe Elements or the Payment Intents API. Webhooks are essential for handling asynchronous events like payment succeeded or subscription renewed. Configure your webhook endpoint to verify signatures using the Stripe-Signature header. ## ShipStation Integration The ShipStation API is REST-based. Authentication uses API key and API secret in the Authorization header. Endpoints cover orders, shipments, carriers, and warehouses. Poll for new orders or use webhooks if available for your plan. Batch operations are supported for bulk label creation. ## Twilio SMS Integration Twilio's REST API requires Account SID and Auth Token. The Messaging API endpoint is /2010-04-01/Accounts/{AccountSid}/Messages.json. For two-way messaging, configure a webhook URL to receive incoming messages. Consider using a queue for high-volume outbound SMS to avoid rate limits. # PentaCodes Technical Reference and Integration Documentation # Version 1.0 | Last Updated March 2025 # This document contains technical reference material for common integrations and deployment procedures. ## QuickBooks Online Integration The QuickBooks Online API uses OAuth 2.0 for authentication. You will need to register your application in the Intuit Developer Portal to obtain client credentials. The base URL for the API is https://quickbooks.api.intuit.com/v3/company/{realmId}. Common endpoints include /invoice, /customer, /payment, and /bill. Rate limits apply: 500 requests per minute for production apps. Always implement exponential backoff for 429 responses. ## Stripe Payment Integration Stripe provides both client-side (Stripe.js) and server-side APIs. For PCI compliance, never pass raw card numbers through your server—use Stripe Elements or the Payment Intents API. Webhooks are essential for handling asynchronous events like payment succeeded or subscription renewed. Configure your webhook endpoint to verify signatures using the Stripe-Signature header. ## ShipStation Integration The ShipStation API is REST-based. Authentication uses API key and API secret in the Authorization header. Endpoints cover orders, shipments, carriers, and warehouses. Poll for new orders or use webhooks if available for your plan. Batch operations are supported for bulk label creation. ## Twilio SMS Integration Twilio's REST API requires Account SID and Auth Token. The Messaging API endpoint is /2010-04-01/Accounts/{AccountSid}/Messages.json. For two-way messaging, configure a webhook URL to receive incoming messages. Consider using a queue for high-volume outbound SMS to avoid rate limits. # PentaCodes Technical Reference and Integration Documentation # Version 1.0 | Last Updated March 2025 # This document contains technical reference material for common integrations and deployment procedures. ## QuickBooks Online Integration The QuickBooks Online API uses OAuth 2.0 for authentication. You will need to register your application in the Intuit Developer Portal to obtain client credentials. The base URL for the API is https://quickbooks.api.intuit.com/v3/company/{realmId}. Common endpoints include /invoice, /customer, /payment, and /bill. Rate limits apply: 500 requests per minute for production apps. Always implement exponential backoff for 429 responses. ## Stripe Payment Integration Stripe provides both client-side (Stripe.js) and server-side APIs. For PCI compliance, never pass raw card numbers through your server—use Stripe Elements or the Payment Intents API. Webhooks are essential for handling asynchronous events like payment succeeded or subscription renewed. Configure your webhook endpoint to verify signatures using the Stripe-Signature header. ## ShipStation Integration The ShipStation API is REST-based. Authentication uses API key and API secret in the Authorization header. Endpoints cover orders, shipments, carriers, and warehouses. Poll for new orders or use webhooks if available for your plan. Batch operations are supported for bulk label creation. ## Twilio SMS Integration Twilio's REST API requires Account SID and Auth Token. The Messaging API endpoint is /2010-04-01/Accounts/{AccountSid}/Messages.json. For two-way messaging, configure a webhook URL to receive incoming messages. Consider using a queue for high-volume outbound SMS to avoid rate limits. # PentaCodes Technical Reference and Integration Documentation # Version 1.0 | Last Updated March 2025 # This document contains technical reference material for common integrations and deployment procedures. ## QuickBooks Online Integration The QuickBooks Online API uses OAuth 2.0 for authentication. You will need to register your application in the Intuit Developer Portal to obtain client credentials. The base URL for the API is https://quickbooks.api.intuit.com/v3/company/{realmId}. Common endpoints include /invoice, /customer, /payment, and /bill. Rate limits apply: 500 requests per minute for production apps. Always implement exponential backoff for 429 responses. ## Stripe Payment Integration Stripe provides both client-side (Stripe.js) and server-side APIs. For PCI compliance, never pass raw card numbers through your server—use Stripe Elements or the Payment Intents API. Webhooks are essential for handling asynchronous events like payment succeeded or subscription renewed. Configure your webhook endpoint to verify signatures using the Stripe-Signature header. ## ShipStation Integration The ShipStation API is REST-based. Authentication uses API key and API secret in the Authorization header. Endpoints cover orders, shipments, carriers, and warehouses. Poll for new orders or use webhooks if available for your plan. Batch operations are supported for bulk label creation. ## Twilio SMS Integration Twilio's REST API requires Account SID and Auth Token. The Messaging API endpoint is /2010-04-01/Accounts/{AccountSid}/Messages.json. For two-way messaging, configure a webhook URL to receive incoming messages. Consider using a queue for high-volume outbound SMS to avoid rate limits. # PentaCodes Technical Reference and Integration Documentation # Version 1.0 | Last Updated March 2025 # This document contains technical reference material for common integrations and deployment procedures. ## QuickBooks Online Integration The QuickBooks Online API uses OAuth 2.0 for authentication. You will need to register your application in the Intuit Developer Portal to obtain client credentials. The base URL for the API is https://quickbooks.api.intuit.com/v3/company/{realmId}. Common endpoints include /invoice, /customer, /payment, and /bill. Rate limits apply: 500 requests per minute for production apps. Always implement exponential backoff for 429 responses. ## Stripe Payment Integration Stripe provides both client-side (Stripe.js) and server-side APIs. For PCI compliance, never pass raw card numbers through your server—use Stripe Elements or the Payment Intents API. Webhooks are essential for handling asynchronous events like payment succeeded or subscription renewed. Configure your webhook endpoint to verify signatures using the Stripe-Signature header. ## ShipStation Integration The ShipStation API is REST-based. Authentication uses API key and API secret in the Authorization header. Endpoints cover orders, shipments, carriers, and warehouses. Poll for new orders or use webhooks if available for your plan. Batch operations are supported for bulk label creation. ## Twilio SMS Integration Twilio's REST API requires Account SID and Auth Token. The Messaging API endpoint is /2010-04-01/Accounts/{AccountSid}/Messages.json. For two-way messaging, configure a webhook URL to receive incoming messages. Consider using a queue for high-volume outbound SMS to avoid rate limits. # PentaCodes Technical Reference and Integration Documentation # Version 1.0 | Last Updated March 2025 # This document contains technical reference material for common integrations and deployment procedures. ## QuickBooks Online Integration The QuickBooks Online API uses OAuth 2.0 for authentication. You will need to register your application in the Intuit Developer Portal to obtain client credentials. The base URL for the API is https://quickbooks.api.intuit.com/v3/company/{realmId}. Common endpoints include /invoice, /customer, /payment, and /bill. Rate limits apply: 500 requests per minute for production apps. Always implement exponential backoff for 429 responses. ## Stripe Payment Integration Stripe provides both client-side (Stripe.js) and server-side APIs. For PCI compliance, never pass raw card numbers through your server—use Stripe Elements or the Payment Intents API. Webhooks are essential for handling asynchronous events like payment succeeded or subscription renewed. Configure your webhook endpoint to verify signatures using the Stripe-Signature header. ## ShipStation Integration The ShipStation API is REST-based. Authentication uses API key and API secret in the Authorization header. Endpoints cover orders, shipments, carriers, and warehouses. Poll for new orders or use webhooks if available for your plan. Batch operations are supported for bulk label creation. ## Twilio SMS Integration Twilio's REST API requires Account SID and Auth Token. The Messaging API endpoint is /2010-04-01/Accounts/{AccountSid}/Messages.json. For two-way messaging, configure a webhook URL to receive incoming messages. Consider using a queue for high-volume outbound SMS to avoid rate limits. # PentaCodes Technical Reference and Integration Documentation # Version 1.0 | Last Updated March 2025 # This document contains technical reference material for common integrations and deployment procedures. ## QuickBooks Online Integration The QuickBooks Online API uses OAuth 2.0 for authentication. You will need to register your application in the Intuit Developer Portal to obtain client credentials. The base URL for the API is https://quickbooks.api.intuit.com/v3/company/{realmId}. Common endpoints include /invoice, /customer, /payment, and /bill. Rate limits apply: 500 requests per minute for production apps. Always implement exponential backoff for 429 responses. ## Stripe Payment Integration Stripe provides both client-side (Stripe.js) and server-side APIs. For PCI compliance, never pass raw card numbers through your server—use Stripe Elements or the Payment Intents API. Webhooks are essential for handling asynchronous events like payment succeeded or subscription renewed. Configure your webhook endpoint to verify signatures using the Stripe-Signature header. ## ShipStation Integration The ShipStation API is REST-based. Authentication uses API key and API secret in the Authorization header. Endpoints cover orders, shipments, carriers, and warehouses. Poll for new orders or use webhooks if available for your plan. Batch operations are supported for bulk label creation. ## Twilio SMS Integration Twilio's REST API requires Account SID and Auth Token. The Messaging API endpoint is /2010-04-01/Accounts/{AccountSid}/Messages.json. For two-way messaging, configure a webhook URL to receive incoming messages. Consider using a queue for high-volume outbound SMS to avoid rate limits. # PentaCodes Technical Reference and Integration Documentation # Version 1.0 | Last Updated March 2025 # This document contains technical reference material for common integrations and deployment procedures. ## QuickBooks Online Integration The QuickBooks Online API uses OAuth 2.0 for authentication. You will need to register your application in the Intuit Developer Portal to obtain client credentials. The base URL for the API is https://quickbooks.api.intuit.com/v3/company/{realmId}. Common endpoints include /invoice, /customer, /payment, and /bill. Rate limits apply: 500 requests per minute for production apps. Always implement exponential backoff for 429 responses. ## Stripe Payment Integration Stripe provides both client-side (Stripe.js) and server-side APIs. For PCI compliance, never pass raw card numbers through your server—use Stripe Elements or the Payment Intents API. Webhooks are essential for handling asynchronous events like payment succeeded or subscription renewed. Configure your webhook endpoint to verify signatures using the Stripe-Signature header. ## ShipStation Integration The ShipStation API is REST-based. Authentication uses API key and API secret in the Authorization header. Endpoints cover orders, shipments, carriers, and warehouses. Poll for new orders or use webhooks if available for your plan. Batch operations are supported for bulk label creation. ## Twilio SMS Integration Twilio's REST API requires Account SID and Auth Token. The Messaging API endpoint is /2010-04-01/Accounts/{AccountSid}/Messages.json. For two-way messaging, configure a webhook URL to receive incoming messages. Consider using a queue for high-volume outbound SMS to avoid rate limits. # PentaCodes Technical Reference and Integration Documentation # Version 1.0 | Last Updated March 2025 # This document contains technical reference material for common integrations and deployment procedures. ## QuickBooks Online Integration The QuickBooks Online API uses OAuth 2.0 for authentication. You will need to register your application in the Intuit Developer Portal to obtain client credentials. The base URL for the API is https://quickbooks.api.intuit.com/v3/company/{realmId}. Common endpoints include /invoice, /customer, /payment, and /bill. Rate limits apply: 500 requests per minute for production apps. Always implement exponential backoff for 429 responses. ## Stripe Payment Integration Stripe provides both client-side (Stripe.js) and server-side APIs. For PCI compliance, never pass raw card numbers through your server—use Stripe Elements or the Payment Intents API. Webhooks are essential for handling asynchronous events like payment succeeded or subscription renewed. Configure your webhook endpoint to verify signatures using the Stripe-Signature header. ## ShipStation Integration The ShipStation API is REST-based. Authentication uses API key and API secret in the Authorization header. Endpoints cover orders, shipments, carriers, and warehouses. Poll for new orders or use webhooks if available for your plan. Batch operations are supported for bulk label creation. ## Twilio SMS Integration Twilio's REST API requires Account SID and Auth Token. The Messaging API endpoint is /2010-04-01/Accounts/{AccountSid}/Messages.json. For two-way messaging, configure a webhook URL to receive incoming messages. Consider using a queue for high-volume outbound SMS to avoid rate limits. # PentaCodes Technical Reference and Integration Documentation # Version 1.0 | Last Updated March 2025 # This document contains technical reference material for common integrations and deployment procedures. ## QuickBooks Online Integration The QuickBooks Online API uses OAuth 2.0 for authentication. You will need to register your application in the Intuit Developer Portal to obtain client credentials. The base URL for the API is https://quickbooks.api.intuit.com/v3/company/{realmId}. Common endpoints include /invoice, /customer, /payment, and /bill. Rate limits apply: 500 requests per minute for production apps. Always implement exponential backoff for 429 responses. ## Stripe Payment Integration Stripe provides both client-side (Stripe.js) and server-side APIs. For PCI compliance, never pass raw card numbers through your server—use Stripe Elements or the Payment Intents API. Webhooks are essential for handling asynchronous events like payment succeeded or subscription renewed. Configure your webhook endpoint to verify signatures using the Stripe-Signature header. ## ShipStation Integration The ShipStation API is REST-based. Authentication uses API key and API secret in the Authorization header. Endpoints cover orders, shipments, carriers, and warehouses. Poll for new orders or use webhooks if available for your plan. Batch operations are supported for bulk label creation. ## Twilio SMS Integration Twilio's REST API requires Account SID and Auth Token. The Messaging API endpoint is /2010-04-01/Accounts/{AccountSid}/Messages.json. For two-way messaging, configure a webhook URL to receive incoming messages. Consider using a queue for high-volume outbound SMS to avoid rate limits. # PentaCodes Technical Reference and Integration Documentation # Version 1.0 | Last Updated March 2025 # This document contains technical reference material for common integrations and deployment procedures. ## QuickBooks Online Integration The QuickBooks Online API uses OAuth 2.0 for authentication. You will need to register your application in the Intuit Developer Portal to obtain client credentials. The base URL for the API is https://quickbooks.api.intuit.com/v3/company/{realmId}. Common endpoints include /invoice, /customer, /payment, and /bill. Rate limits apply: 500 requests per minute for production apps. Always implement exponential backoff for 429 responses. ## Stripe Payment Integration Stripe provides both client-side (Stripe.js) and server-side APIs. For PCI compliance, never pass raw card numbers through your server—use Stripe Elements or the Payment Intents API. Webhooks are essential for handling asynchronous events like payment succeeded or subscription renewed. Configure your webhook endpoint to verify signatures using the Stripe-Signature header. ## ShipStation Integration The ShipStation API is REST-based. Authentication uses API key and API secret in the Authorization header. Endpoints cover orders, shipments, carriers, and warehouses. Poll for new orders or use webhooks if available for your plan. Batch operations are supported for bulk label creation. ## Twilio SMS Integration Twilio's REST API requires Account SID and Auth Token. The Messaging API endpoint is /2010-04-01/Accounts/{AccountSid}/Messages.json. For two-way messaging, configure a webhook URL to receive incoming messages. Consider using a queue for high-volume outbound SMS to avoid rate limits. # PentaCodes Technical Reference and Integration Documentation # Version 1.0 | Last Updated March 2025 # This document contains technical reference material for common integrations and deployment procedures. ## QuickBooks Online Integration The QuickBooks Online API uses OAuth 2.0 for authentication. You will need to register your application in the Intuit Developer Portal to obtain client credentials. The base URL for the API is https://quickbooks.api.intuit.com/v3/company/{realmId}. Common endpoints include /invoice, /customer, /payment, and /bill. Rate limits apply: 500 requests per minute for production apps. Always implement exponential backoff for 429 responses. ## Stripe Payment Integration Stripe provides both client-side (Stripe.js) and server-side APIs. For PCI compliance, never pass raw card numbers through your server—use Stripe Elements or the Payment Intents API. Webhooks are essential for handling asynchronous events like payment succeeded or subscription renewed. Configure your webhook endpoint to verify signatures using the Stripe-Signature header. ## ShipStation Integration The ShipStation API is REST-based. Authentication uses API key and API secret in the Authorization header. Endpoints cover orders, shipments, carriers, and warehouses. Poll for new orders or use webhooks if available for your plan. Batch operations are supported for bulk label creation. ## Twilio SMS Integration Twilio's REST API requires Account SID and Auth Token. The Messaging API endpoint is /2010-04-01/Accounts/{AccountSid}/Messages.json. For two-way messaging, configure a webhook URL to receive incoming messages. Consider using a queue for high-volume outbound SMS to avoid rate limits. # PentaCodes Technical Reference and Integration Documentation # Version 1.0 | Last Updated March 2025 # This document contains technical reference material for common integrations and deployment procedures. ## QuickBooks Online Integration The QuickBooks Online API uses OAuth 2.0 for authentication. You will need to register your application in the Intuit Developer Portal to obtain client credentials. The base URL for the API is https://quickbooks.api.intuit.com/v3/company/{realmId}. Common endpoints include /invoice, /customer, /payment, and /bill. Rate limits apply: 500 requests per minute for production apps. Always implement exponential backoff for 429 responses. ## Stripe Payment Integration Stripe provides both client-side (Stripe.js) and server-side APIs. For PCI compliance, never pass raw card numbers through your server—use Stripe Elements or the Payment Intents API. Webhooks are essential for handling asynchronous events like payment succeeded or subscription renewed. Configure your webhook endpoint to verify signatures using the Stripe-Signature header. ## ShipStation Integration The ShipStation API is REST-based. Authentication uses API key and API secret in the Authorization header. Endpoints cover orders, shipments, carriers, and warehouses. Poll for new orders or use webhooks if available for your plan. Batch operations are supported for bulk label creation. ## Twilio SMS Integration Twilio's REST API requires Account SID and Auth Token. The Messaging API endpoint is /2010-04-01/Accounts/{AccountSid}/Messages.json. For two-way messaging, configure a webhook URL to receive incoming messages. Consider using a queue for high-volume outbound SMS to avoid rate limits. # PentaCodes Technical Reference and Integration Documentation # Version 1.0 | Last Updated March 2025 # This document contains technical reference material for common integrations and deployment procedures. ## QuickBooks Online Integration The QuickBooks Online API uses OAuth 2.0 for authentication. You will need to register your application in the Intuit Developer Portal to obtain client credentials. The base URL for the API is https://quickbooks.api.intuit.com/v3/company/{realmId}. Common endpoints include /invoice, /customer, /payment, and /bill. Rate limits apply: 500 requests per minute for production apps. Always implement exponential backoff for 429 responses. ## Stripe Payment Integration Stripe provides both client-side (Stripe.js) and server-side APIs. For PCI compliance, never pass raw card numbers through your server—use Stripe Elements or the Payment Intents API. Webhooks are essential for handling asynchronous events like payment succeeded or subscription renewed. Configure your webhook endpoint to verify signatures using the Stripe-Signature header. ## ShipStation Integration The ShipStation API is REST-based. Authentication uses API key and API secret in the Authorization header. Endpoints cover orders, shipments, carriers, and warehouses. Poll for new orders or use webhooks if available for your plan. Batch operations are supported for bulk label creation. ## Twilio SMS Integration Twilio's REST API requires Account SID and Auth Token. The Messaging API endpoint is /2010-04-01/Accounts/{AccountSid}/Messages.json. For two-way messaging, configure a webhook URL to receive incoming messages. Consider using a queue for high-volume outbound SMS to avoid rate limits. # PentaCodes Technical Reference and Integration Documentation # Version 1.0 | Last Updated March 2025 # This document contains technical reference material for common integrations and deployment procedures. ## QuickBooks Online Integration The QuickBooks Online API uses OAuth 2.0 for authentication. You will need to register your application in the Intuit Developer Portal to obtain client credentials. The base URL for the API is https://quickbooks.api.intuit.com/v3/company/{realmId}. Common endpoints include /invoice, /customer, /payment, and /bill. Rate limits apply: 500 requests per minute for production apps. Always implement exponential backoff for 429 responses. ## Stripe Payment Integration Stripe provides both client-side (Stripe.js) and server-side APIs. For PCI compliance, never pass raw card numbers through your server—use Stripe Elements or the Payment Intents API. Webhooks are essential for handling asynchronous events like payment succeeded or subscription renewed. Configure your webhook endpoint to verify signatures using the Stripe-Signature header. ## ShipStation Integration The ShipStation API is REST-based. Authentication uses API key and API secret in the Authorization header. Endpoints cover orders, shipments, carriers, and warehouses. Poll for new orders or use webhooks if available for your plan. Batch operations are supported for bulk label creation. ## Twilio SMS Integration Twilio's REST API requires Account SID and Auth Token. The Messaging API endpoint is /2010-04-01/Accounts/{AccountSid}/Messages.json. For two-way messaging, configure a webhook URL to receive incoming messages. Consider using a queue for high-volume outbound SMS to avoid rate limits. # PentaCodes Technical Reference and Integration Documentation # Version 1.0 | Last Updated March 2025 # This document contains technical reference material for common integrations and deployment procedures. ## QuickBooks Online Integration The QuickBooks Online API uses OAuth 2.0 for authentication. You will need to register your application in the Intuit Developer Portal to obtain client credentials. The base URL for the API is https://quickbooks.api.intuit.com/v3/company/{realmId}. Common endpoints include /invoice, /customer, /payment, and /bill. Rate limits apply: 500 requests per minute for production apps. Always implement exponential backoff for 429 responses. ## Stripe Payment Integration Stripe provides both client-side (Stripe.js) and server-side APIs. For PCI compliance, never pass raw card numbers through your server—use Stripe Elements or the Payment Intents API. Webhooks are essential for handling asynchronous events like payment succeeded or subscription renewed. Configure your webhook endpoint to verify signatures using the Stripe-Signature header. ## ShipStation Integration The ShipStation API is REST-based. Authentication uses API key and API secret in the Authorization header. Endpoints cover orders, shipments, carriers, and warehouses. Poll for new orders or use webhooks if available for your plan. Batch operations are supported for bulk label creation. ## Twilio SMS Integration Twilio's REST API requires Account SID and Auth Token. The Messaging API endpoint is /2010-04-01/Accounts/{AccountSid}/Messages.json. For two-way messaging, configure a webhook URL to receive incoming messages. Consider using a queue for high-volume outbound SMS to avoid rate limits. # PentaCodes Technical Reference and Integration Documentation # Version 1.0 | Last Updated March 2025 # This document contains technical reference material for common integrations and deployment procedures. ## QuickBooks Online Integration The QuickBooks Online API uses OAuth 2.0 for authentication. You will need to register your application in the Intuit Developer Portal to obtain client credentials. The base URL for the API is https://quickbooks.api.intuit.com/v3/company/{realmId}. Common endpoints include /invoice, /customer, /payment, and /bill. Rate limits apply: 500 requests per minute for production apps. Always implement exponential backoff for 429 responses. ## Stripe Payment Integration Stripe provides both client-side (Stripe.js) and server-side APIs. For PCI compliance, never pass raw card numbers through your server—use Stripe Elements or the Payment Intents API. Webhooks are essential for handling asynchronous events like payment succeeded or subscription renewed. Configure your webhook endpoint to verify signatures using the Stripe-Signature header. ## ShipStation Integration The ShipStation API is REST-based. Authentication uses API key and API secret in the Authorization header. Endpoints cover orders, shipments, carriers, and warehouses. Poll for new orders or use webhooks if available for your plan. Batch operations are supported for bulk label creation. ## Twilio SMS Integration Twilio's REST API requires Account SID and Auth Token. The Messaging API endpoint is /2010-04-01/Accounts/{AccountSid}/Messages.json. For two-way messaging, configure a webhook URL to receive incoming messages. Consider using a queue for high-volume outbound SMS to avoid rate limits. # PentaCodes Technical Reference and Integration Documentation # Version 1.0 | Last Updated March 2025 # This document contains technical reference material for common integrations and deployment procedures. ## QuickBooks Online Integration The QuickBooks Online API uses OAuth 2.0 for authentication. You will need to register your application in the Intuit Developer Portal to obtain client credentials. The base URL for the API is https://quickbooks.api.intuit.com/v3/company/{realmId}. Common endpoints include /invoice, /customer, /payment, and /bill. Rate limits apply: 500 requests per minute for production apps. Always implement exponential backoff for 429 responses. ## Stripe Payment Integration Stripe provides both client-side (Stripe.js) and server-side APIs. For PCI compliance, never pass raw card numbers through your server—use Stripe Elements or the Payment Intents API. Webhooks are essential for handling asynchronous events like payment succeeded or subscription renewed. Configure your webhook endpoint to verify signatures using the Stripe-Signature header. ## ShipStation Integration The ShipStation API is REST-based. Authentication uses API key and API secret in the Authorization header. Endpoints cover orders, shipments, carriers, and warehouses. Poll for new orders or use webhooks if available for your plan. Batch operations are supported for bulk label creation. ## Twilio SMS Integration Twilio's REST API requires Account SID and Auth Token. The Messaging API endpoint is /2010-04-01/Accounts/{AccountSid}/Messages.json. For two-way messaging, configure a webhook URL to receive incoming messages. Consider using a queue for high-volume outbound SMS to avoid rate limits. # PentaCodes Technical Reference and Integration Documentation # Version 1.0 | Last Updated March 2025 # This document contains technical reference material for common integrations and deployment procedures. ## QuickBooks Online Integration The QuickBooks Online API uses OAuth 2.0 for authentication. You will need to register your application in the Intuit Developer Portal to obtain client credentials. The base URL for the API is https://quickbooks.api.intuit.com/v3/company/{realmId}. Common endpoints include /invoice, /customer, /payment, and /bill. Rate limits apply: 500 requests per minute for production apps. Always implement exponential backoff for 429 responses. ## Stripe Payment Integration Stripe provides both client-side (Stripe.js) and server-side APIs. For PCI compliance, never pass raw card numbers through your server—use Stripe Elements or the Payment Intents API. Webhooks are essential for handling asynchronous events like payment succeeded or subscription renewed. Configure your webhook endpoint to verify signatures using the Stripe-Signature header. ## ShipStation Integration The ShipStation API is REST-based. Authentication uses API key and API secret in the Authorization header. Endpoints cover orders, shipments, carriers, and warehouses. Poll for new orders or use webhooks if available for your plan. Batch operations are supported for bulk label creation. ## Twilio SMS Integration Twilio's REST API requires Account SID and Auth Token. The Messaging API endpoint is /2010-04-01/Accounts/{AccountSid}/Messages.json. For two-way messaging, configure a webhook URL to receive incoming messages. Consider using a queue for high-volume outbound SMS to avoid rate limits. # PentaCodes Technical Reference and Integration Documentation # Version 1.0 | Last Updated March 2025 # This document contains technical reference material for common integrations and deployment procedures. ## QuickBooks Online Integration The QuickBooks Online API uses OAuth 2.0 for authentication. You will need to register your application in the Intuit Developer Portal to obtain client credentials. The base URL for the API is https://quickbooks.api.intuit.com/v3/company/{realmId}. Common endpoints include /invoice, /customer, /payment, and /bill. Rate limits apply: 500 requests per minute for production apps. Always implement exponential backoff for 429 responses. ## Stripe Payment Integration Stripe provides both client-side (Stripe.js) and server-side APIs. For PCI compliance, never pass raw card numbers through your server—use Stripe Elements or the Payment Intents API. Webhooks are essential for handling asynchronous events like payment succeeded or subscription renewed. Configure your webhook endpoint to verify signatures using the Stripe-Signature header. ## ShipStation Integration The ShipStation API is REST-based. Authentication uses API key and API secret in the Authorization header. Endpoints cover orders, shipments, carriers, and warehouses. Poll for new orders or use webhooks if available for your plan. Batch operations are supported for bulk label creation. ## Twilio SMS Integration Twilio's REST API requires Account SID and Auth Token. The Messaging API endpoint is /2010-04-01/Accounts/{AccountSid}/Messages.json. For two-way messaging, configure a webhook URL to receive incoming messages. Consider using a queue for high-volume outbound SMS to avoid rate limits. # PentaCodes Technical Reference and Integration Documentation # Version 1.0 | Last Updated March 2025 # This document contains technical reference material for common integrations and deployment procedures. ## QuickBooks Online Integration The QuickBooks Online API uses OAuth 2.0 for authentication. You will need to register your application in the Intuit Developer Portal to obtain client credentials. The base URL for the API is https://quickbooks.api.intuit.com/v3/company/{realmId}. Common endpoints include /invoice, /customer, /payment, and /bill. Rate limits apply: 500 requests per minute for production apps. Always implement exponential backoff for 429 responses. ## Stripe Payment Integration Stripe provides both client-side (Stripe.js) and server-side APIs. For PCI compliance, never pass raw card numbers through your server—use Stripe Elements or the Payment Intents API. Webhooks are essential for handling asynchronous events like payment succeeded or subscription renewed. Configure your webhook endpoint to verify signatures using the Stripe-Signature header. ## ShipStation Integration The ShipStation API is REST-based. Authentication uses API key and API secret in the Authorization header. Endpoints cover orders, shipments, carriers, and warehouses. Poll for new orders or use webhooks if available for your plan. Batch operations are supported for bulk label creation. ## Twilio SMS Integration Twilio's REST API requires Account SID and Auth Token. The Messaging API endpoint is /2010-04-01/Accounts/{AccountSid}/Messages.json. For two-way messaging, configure a webhook URL to receive incoming messages. Consider using a queue for high-volume outbound SMS to avoid rate limits. # PentaCodes Technical Reference and Integration Documentation # Version 1.0 | Last Updated March 2025 # This document contains technical reference material for common integrations and deployment procedures. ## QuickBooks Online Integration The QuickBooks Online API uses OAuth 2.0 for authentication. You will need to register your application in the Intuit Developer Portal to obtain client credentials. The base URL for the API is https://quickbooks.api.intuit.com/v3/company/{realmId}. Common endpoints include /invoice, /customer, /payment, and /bill. Rate limits apply: 500 requests per minute for production apps. Always implement exponential backoff for 429 responses. ## Stripe Payment Integration Stripe provides both client-side (Stripe.js) and server-side APIs. For PCI compliance, never pass raw card numbers through your server—use Stripe Elements or the Payment Intents API. Webhooks are essential for handling asynchronous events like payment succeeded or subscription renewed. Configure your webhook endpoint to verify signatures using the Stripe-Signature header. ## ShipStation Integration The ShipStation API is REST-based. Authentication uses API key and API secret in the Authorization header. Endpoints cover orders, shipments, carriers, and warehouses. Poll for new orders or use webhooks if available for your plan. Batch operations are supported for bulk label creation. ## Twilio SMS Integration Twilio's REST API requires Account SID and Auth Token. The Messaging API endpoint is /2010-04-01/Accounts/{AccountSid}/Messages.json. For two-way messaging, configure a webhook URL to receive incoming messages. Consider using a queue for high-volume outbound SMS to avoid rate limits. # PentaCodes Technical Reference and Integration Documentation # Version 1.0 | Last Updated March 2025 # This document contains technical reference material for common integrations and deployment procedures. ## QuickBooks Online Integration The QuickBooks Online API uses OAuth 2.0 for authentication. You will need to register your application in the Intuit Developer Portal to obtain client credentials. The base URL for the API is https://quickbooks.api.intuit.com/v3/company/{realmId}. Common endpoints include /invoice, /customer, /payment, and /bill. Rate limits apply: 500 requests per minute for production apps. Always implement exponential backoff for 429 responses. ## Stripe Payment Integration Stripe provides both client-side (Stripe.js) and server-side APIs. For PCI compliance, never pass raw card numbers through your server—use Stripe Elements or the Payment Intents API. Webhooks are essential for handling asynchronous events like payment succeeded or subscription renewed. Configure your webhook endpoint to verify signatures using the Stripe-Signature header. ## ShipStation Integration The ShipStation API is REST-based. Authentication uses API key and API secret in the Authorization header. Endpoints cover orders, shipments, carriers, and warehouses. Poll for new orders or use webhooks if available for your plan. Batch operations are supported for bulk label creation. ## Twilio SMS Integration Twilio's REST API requires Account SID and Auth Token. The Messaging API endpoint is /2010-04-01/Accounts/{AccountSid}/Messages.json. For two-way messaging, configure a webhook URL to receive incoming messages. Consider using a queue for high-volume outbound SMS to avoid rate limits. # PentaCodes Technical Reference and Integration Documentation # Version 1.0 | Last Updated March 2025 # This document contains technical reference material for common integrations and deployment procedures. ## QuickBooks Online Integration The QuickBooks Online API uses OAuth 2.0 for authentication. You will need to register your application in the Intuit Developer Portal to obtain client credentials. The base URL for the API is https://quickbooks.api.intuit.com/v3/company/{realmId}. Common endpoints include /invoice, /customer, /payment, and /bill. Rate limits apply: 500 requests per minute for production apps. Always implement exponential backoff for 429 responses. ## Stripe Payment Integration Stripe provides both client-side (Stripe.js) and server-side APIs. For PCI compliance, never pass raw card numbers through your server—use Stripe Elements or the Payment Intents API. Webhooks are essential for handling asynchronous events like payment succeeded or subscription renewed. Configure your webhook endpoint to verify signatures using the Stripe-Signature header. ## ShipStation Integration The ShipStation API is REST-based. Authentication uses API key and API secret in the Authorization header. Endpoints cover orders, shipments, carriers, and warehouses. Poll for new orders or use webhooks if available for your plan. Batch operations are supported for bulk label creation. ## Twilio SMS Integration Twilio's REST API requires Account SID and Auth Token. The Messaging API endpoint is /2010-04-01/Accounts/{AccountSid}/Messages.json. For two-way messaging, configure a webhook URL to receive incoming messages. Consider using a queue for high-volume outbound SMS to avoid rate limits. # PentaCodes Technical Reference and Integration Documentation # Version 1.0 | Last Updated March 2025 # This document contains technical reference material for common integrations and deployment procedures. ## QuickBooks Online Integration The QuickBooks Online API uses OAuth 2.0 for authentication. You will need to register your application in the Intuit Developer Portal to obtain client credentials. The base URL for the API is https://quickbooks.api.intuit.com/v3/company/{realmId}. Common endpoints include /invoice, /customer, /payment, and /bill. Rate limits apply: 500 requests per minute for production apps. Always implement exponential backoff for 429 responses. ## Stripe Payment Integration Stripe provides both client-side (Stripe.js) and server-side APIs. For PCI compliance, never pass raw card numbers through your server—use Stripe Elements or the Payment Intents API. Webhooks are essential for handling asynchronous events like payment succeeded or subscription renewed. Configure your webhook endpoint to verify signatures using the Stripe-Signature header. ## ShipStation Integration The ShipStation API is REST-based. Authentication uses API key and API secret in the Authorization header. Endpoints cover orders, shipments, carriers, and warehouses. Poll for new orders or use webhooks if available for your plan. Batch operations are supported for bulk label creation. ## Twilio SMS Integration Twilio's REST API requires Account SID and Auth Token. The Messaging API endpoint is /2010-04-01/Accounts/{AccountSid}/Messages.json. For two-way messaging, configure a webhook URL to receive incoming messages. Consider using a queue for high-volume outbound SMS to avoid rate limits. # PentaCodes Technical Reference and Integration Documentation # Version 1.0 | Last Updated March 2025 # This document contains technical reference material for common integrations and deployment procedures. ## QuickBooks Online Integration The QuickBooks Online API uses OAuth 2.0 for authentication. You will need to register your application in the Intuit Developer Portal to obtain client credentials. The base URL for the API is https://quickbooks.api.intuit.com/v3/company/{realmId}. Common endpoints include /invoice, /customer, /payment, and /bill. Rate limits apply: 500 requests per minute for production apps. Always implement exponential backoff for 429 responses. ## Stripe Payment Integration Stripe provides both client-side (Stripe.js) and server-side APIs. For PCI compliance, never pass raw card numbers through your server—use Stripe Elements or the Payment Intents API. Webhooks are essential for handling asynchronous events like payment succeeded or subscription renewed. Configure your webhook endpoint to verify signatures using the Stripe-Signature header. ## ShipStation Integration The ShipStation API is REST-based. Authentication uses API key and API secret in the Authorization header. Endpoints cover orders, shipments, carriers, and warehouses. Poll for new orders or use webhooks if available for your plan. Batch operations are supported for bulk label creation. ## Twilio SMS Integration Twilio's REST API requires Account SID and Auth Token. The Messaging API endpoint is /2010-04-01/Accounts/{AccountSid}/Messages.json. For two-way messaging, configure a webhook URL to receive incoming messages. Consider using a queue for high-volume outbound SMS to avoid rate limits. # PentaCodes Technical Reference and Integration Documentation # Version 1.0 | Last Updated March 2025 # This document contains technical reference material for common integrations and deployment procedures. ## QuickBooks Online Integration The QuickBooks Online API uses OAuth 2.0 for authentication. You will need to register your application in the Intuit Developer Portal to obtain client credentials. The base URL for the API is https://quickbooks.api.intuit.com/v3/company/{realmId}. Common endpoints include /invoice, /customer, /payment, and /bill. Rate limits apply: 500 requests per minute for production apps. Always implement exponential backoff for 429 responses. ## Stripe Payment Integration Stripe provides both client-side (Stripe.js) and server-side APIs. For PCI compliance, never pass raw card numbers through your server—use Stripe Elements or the Payment Intents API. Webhooks are essential for handling asynchronous events like payment succeeded or subscription renewed. Configure your webhook endpoint to verify signatures using the Stripe-Signature header. ## ShipStation Integration The ShipStation API is REST-based. Authentication uses API key and API secret in the Authorization header. Endpoints cover orders, shipments, carriers, and warehouses. Poll for new orders or use webhooks if available for your plan. Batch operations are supported for bulk label creation. ## Twilio SMS Integration Twilio's REST API requires Account SID and Auth Token. The Messaging API endpoint is /2010-04-01/Accounts/{AccountSid}/Messages.json. For two-way messaging, configure a webhook URL to receive incoming messages. Consider using a queue for high-volume outbound SMS to avoid rate limits. # PentaCodes Technical Reference and Integration Documentation # Version 1.0 | Last Updated March 2025 # This document contains technical reference material for common integrations and deployment procedures. ## QuickBooks Online Integration The QuickBooks Online API uses OAuth 2.0 for authentication. You will need to register your application in the Intuit Developer Portal to obtain client credentials. The base URL for the API is https://quickbooks.api.intuit.com/v3/company/{realmId}. Common endpoints include /invoice, /customer, /payment, and /bill. Rate limits apply: 500 requests per minute for production apps. Always implement exponential backoff for 429 responses. ## Stripe Payment Integration Stripe provides both client-side (Stripe.js) and server-side APIs. For PCI compliance, never pass raw card numbers through your server—use Stripe Elements or the Payment Intents API. Webhooks are essential for handling asynchronous events like payment succeeded or subscription renewed. Configure your webhook endpoint to verify signatures using the Stripe-Signature header. ## ShipStation Integration The ShipStation API is REST-based. Authentication uses API key and API secret in the Authorization header. Endpoints cover orders, shipments, carriers, and warehouses. Poll for new orders or use webhooks if available for your plan. Batch operations are supported for bulk label creation. ## Twilio SMS Integration Twilio's REST API requires Account SID and Auth Token. The Messaging API endpoint is /2010-04-01/Accounts/{AccountSid}/Messages.json. For two-way messaging, configure a webhook URL to receive incoming messages. Consider using a queue for high-volume outbound SMS to avoid rate limits. # PentaCodes Technical Reference and Integration Documentation # Version 1.0 | Last Updated March 2025 # This document contains technical reference material for common integrations and deployment procedures. ## QuickBooks Online Integration The QuickBooks Online API uses OAuth 2.0 for authentication. You will need to register your application in the Intuit Developer Portal to obtain client credentials. The base URL for the API is https://quickbooks.api.intuit.com/v3/company/{realmId}. Common endpoints include /invoice, /customer, /payment, and /bill. Rate limits apply: 500 requests per minute for production apps. Always implement exponential backoff for 429 responses. ## Stripe Payment Integration Stripe provides both client-side (Stripe.js) and server-side APIs. For PCI compliance, never pass raw card numbers through your server—use Stripe Elements or the Payment Intents API. Webhooks are essential for handling asynchronous events like payment succeeded or subscription renewed. Configure your webhook endpoint to verify signatures using the Stripe-Signature header. ## ShipStation Integration The ShipStation API is REST-based. Authentication uses API key and API secret in the Authorization header. Endpoints cover orders, shipments, carriers, and warehouses. Poll for new orders or use webhooks if available for your plan. Batch operations are supported for bulk label creation. ## Twilio SMS Integration Twilio's REST API requires Account SID and Auth Token. The Messaging API endpoint is /2010-04-01/Accounts/{AccountSid}/Messages.json. For two-way messaging, configure a webhook URL to receive incoming messages. Consider using a queue for high-volume outbound SMS to avoid rate limits. # PentaCodes Technical Reference and Integration Documentation # Version 1.0 | Last Updated March 2025 # This document contains technical reference material for common integrations and deployment procedures. ## QuickBooks Online Integration The QuickBooks Online API uses OAuth 2.0 for authentication. You will need to register your application in the Intuit Developer Portal to obtain client credentials. The base URL for the API is https://quickbooks.api.intuit.com/v3/company/{realmId}. Common endpoints include /invoice, /customer, /payment, and /bill. Rate limits apply: 500 requests per minute for production apps. Always implement exponential backoff for 429 responses. ## Stripe Payment Integration Stripe provides both client-side (Stripe.js) and server-side APIs. For PCI compliance, never pass raw card numbers through your server—use Stripe Elements or the Payment Intents API. Webhooks are essential for handling asynchronous events like payment succeeded or subscription renewed. Configure your webhook endpoint to verify signatures using the Stripe-Signature header. ## ShipStation Integration The ShipStation API is REST-based. Authentication uses API key and API secret in the Authorization header. Endpoints cover orders, shipments, carriers, and warehouses. Poll for new orders or use webhooks if available for your plan. Batch operations are supported for bulk label creation. ## Twilio SMS Integration Twilio's REST API requires Account SID and Auth Token. The Messaging API endpoint is /2010-04-01/Accounts/{AccountSid}/Messages.json. For two-way messaging, configure a webhook URL to receive incoming messages. Consider using a queue for high-volume outbound SMS to avoid rate limits. # PentaCodes Technical Reference and Integration Documentation # Version 1.0 | Last Updated March 2025 # This document contains technical reference material for common integrations and deployment procedures. ## QuickBooks Online Integration The QuickBooks Online API uses OAuth 2.0 for authentication. You will need to register your application in the Intuit Developer Portal to obtain client credentials. The base URL for the API is https://quickbooks.api.intuit.com/v3/company/{realmId}. Common endpoints include /invoice, /customer, /payment, and /bill. Rate limits apply: 500 requests per minute for production apps. Always implement exponential backoff for 429 responses. ## Stripe Payment Integration Stripe provides both client-side (Stripe.js) and server-side APIs. For PCI compliance, never pass raw card numbers through your server—use Stripe Elements or the Payment Intents API. Webhooks are essential for handling asynchronous events like payment succeeded or subscription renewed. Configure your webhook endpoint to verify signatures using the Stripe-Signature header. ## ShipStation Integration The ShipStation API is REST-based. Authentication uses API key and API secret in the Authorization header. Endpoints cover orders, shipments, carriers, and warehouses. Poll for new orders or use webhooks if available for your plan. Batch operations are supported for bulk label creation. ## Twilio SMS Integration Twilio's REST API requires Account SID and Auth Token. The Messaging API endpoint is /2010-04-01/Accounts/{AccountSid}/Messages.json. For two-way messaging, configure a webhook URL to receive incoming messages. Consider using a queue for high-volume outbound SMS to avoid rate limits. # PentaCodes Technical Reference and Integration Documentation # Version 1.0 | Last Updated March 2025 # This document contains technical reference material for common integrations and deployment procedures. ## QuickBooks Online Integration The QuickBooks Online API uses OAuth 2.0 for authentication. You will need to register your application in the Intuit Developer Portal to obtain client credentials. The base URL for the API is https://quickbooks.api.intuit.com/v3/company/{realmId}. Common endpoints include /invoice, /customer, /payment, and /bill. Rate limits apply: 500 requests per minute for production apps. Always implement exponential backoff for 429 responses. ## Stripe Payment Integration Stripe provides both client-side (Stripe.js) and server-side APIs. For PCI compliance, never pass raw card numbers through your server—use Stripe Elements or the Payment Intents API. Webhooks are essential for handling asynchronous events like payment succeeded or subscription renewed. Configure your webhook endpoint to verify signatures using the Stripe-Signature header. ## ShipStation Integration The ShipStation API is REST-based. Authentication uses API key and API secret in the Authorization header. Endpoints cover orders, shipments, carriers, and warehouses. Poll for new orders or use webhooks if available for your plan. Batch operations are supported for bulk label creation. ## Twilio SMS Integration Twilio's REST API requires Account SID and Auth Token. The Messaging API endpoint is /2010-04-01/Accounts/{AccountSid}/Messages.json. For two-way messaging, configure a webhook URL to receive incoming messages. Consider using a queue for high-volume outbound SMS to avoid rate limits. # PentaCodes Technical Reference and Integration Documentation # Version 1.0 | Last Updated March 2025 # This document contains technical reference material for common integrations and deployment procedures. ## QuickBooks Online Integration The QuickBooks Online API uses OAuth 2.0 for authentication. You will need to register your application in the Intuit Developer Portal to obtain client credentials. The base URL for the API is https://quickbooks.api.intuit.com/v3/company/{realmId}. Common endpoints include /invoice, /customer, /payment, and /bill. Rate limits apply: 500 requests per minute for production apps. Always implement exponential backoff for 429 responses. ## Stripe Payment Integration Stripe provides both client-side (Stripe.js) and server-side APIs. For PCI compliance, never pass raw card numbers through your server—use Stripe Elements or the Payment Intents API. Webhooks are essential for handling asynchronous events like payment succeeded or subscription renewed. Configure your webhook endpoint to verify signatures using the Stripe-Signature header. ## ShipStation Integration The ShipStation API is REST-based. Authentication uses API key and API secret in the Authorization header. Endpoints cover orders, shipments, carriers, and warehouses. Poll for new orders or use webhooks if available for your plan. Batch operations are supported for bulk label creation. ## Twilio SMS Integration Twilio's REST API requires Account SID and Auth Token. The Messaging API endpoint is /2010-04-01/Accounts/{AccountSid}/Messages.json. For two-way messaging, configure a webhook URL to receive incoming messages. Consider using a queue for high-volume outbound SMS to avoid rate limits. # PentaCodes Technical Reference and Integration Documentation # Version 1.0 | Last Updated March 2025 # This document contains technical reference material for common integrations and deployment procedures. ## QuickBooks Online Integration The QuickBooks Online API uses OAuth 2.0 for authentication. You will need to register your application in the Intuit Developer Portal to obtain client credentials. The base URL for the API is https://quickbooks.api.intuit.com/v3/company/{realmId}. Common endpoints include /invoice, /customer, /payment, and /bill. Rate limits apply: 500 requests per minute for production apps. Always implement exponential backoff for 429 responses. ## Stripe Payment Integration Stripe provides both client-side (Stripe.js) and server-side APIs. For PCI compliance, never pass raw card numbers through your server—use Stripe Elements or the Payment Intents API. Webhooks are essential for handling asynchronous events like payment succeeded or subscription renewed. Configure your webhook endpoint to verify signatures using the Stripe-Signature header. ## ShipStation Integration The ShipStation API is REST-based. Authentication uses API key and API secret in the Authorization header. Endpoints cover orders, shipments, carriers, and warehouses. Poll for new orders or use webhooks if available for your plan. Batch operations are supported for bulk label creation. ## Twilio SMS Integration Twilio's REST API requires Account SID and Auth Token. The Messaging API endpoint is /2010-04-01/Accounts/{AccountSid}/Messages.json. For two-way messaging, configure a webhook URL to receive incoming messages. Consider using a queue for high-volume outbound SMS to avoid rate limits. # PentaCodes Technical Reference and Integration Documentation # Version 1.0 | Last Updated March 2025 # This document contains technical reference material for common integrations and deployment procedures. ## QuickBooks Online Integration The QuickBooks Online API uses OAuth 2.0 for authentication. You will need to register your application in the Intuit Developer Portal to obtain client credentials. The base URL for the API is https://quickbooks.api.intuit.com/v3/company/{realmId}. Common endpoints include /invoice, /customer, /payment, and /bill. Rate limits apply: 500 requests per minute for production apps. Always implement exponential backoff for 429 responses. ## Stripe Payment Integration Stripe provides both client-side (Stripe.js) and server-side APIs. For PCI compliance, never pass raw card numbers through your server—use Stripe Elements or the Payment Intents API. Webhooks are essential for handling asynchronous events like payment succeeded or subscription renewed. Configure your webhook endpoint to verify signatures using the Stripe-Signature header. ## ShipStation Integration The ShipStation API is REST-based. Authentication uses API key and API secret in the Authorization header. Endpoints cover orders, shipments, carriers, and warehouses. Poll for new orders or use webhooks if available for your plan. Batch operations are supported for bulk label creation. ## Twilio SMS Integration Twilio's REST API requires Account SID and Auth Token. The Messaging API endpoint is /2010-04-01/Accounts/{AccountSid}/Messages.json. For two-way messaging, configure a webhook URL to receive incoming messages. Consider using a queue for high-volume outbound SMS to avoid rate limits. # PentaCodes Technical Reference and Integration Documentation # Version 1.0 | Last Updated March 2025 # This document contains technical reference material for common integrations and deployment procedures. ## QuickBooks Online Integration The QuickBooks Online API uses OAuth 2.0 for authentication. You will need to register your application in the Intuit Developer Portal to obtain client credentials. The base URL for the API is https://quickbooks.api.intuit.com/v3/company/{realmId}. Common endpoints include /invoice, /customer, /payment, and /bill. Rate limits apply: 500 requests per minute for production apps. Always implement exponential backoff for 429 responses. ## Stripe Payment Integration Stripe provides both client-side (Stripe.js) and server-side APIs. For PCI compliance, never pass raw card numbers through your server—use Stripe Elements or the Payment Intents API. Webhooks are essential for handling asynchronous events like payment succeeded or subscription renewed. Configure your webhook endpoint to verify signatures using the Stripe-Signature header. ## ShipStation Integration The ShipStation API is REST-based. Authentication uses API key and API secret in the Authorization header. Endpoints cover orders, shipments, carriers, and warehouses. Poll for new orders or use webhooks if available for your plan. Batch operations are supported for bulk label creation. ## Twilio SMS Integration Twilio's REST API requires Account SID and Auth Token. The Messaging API endpoint is /2010-04-01/Accounts/{AccountSid}/Messages.json. For two-way messaging, configure a webhook URL to receive incoming messages. Consider using a queue for high-volume outbound SMS to avoid rate limits. # PentaCodes Technical Reference and Integration Documentation # Version 1.0 | Last Updated March 2025 # This document contains technical reference material for common integrations and deployment procedures. ## QuickBooks Online Integration The QuickBooks Online API uses OAuth 2.0 for authentication. You will need to register your application in the Intuit Developer Portal to obtain client credentials. The base URL for the API is https://quickbooks.api.intuit.com/v3/company/{realmId}. Common endpoints include /invoice, /customer, /payment, and /bill. Rate limits apply: 500 requests per minute for production apps. Always implement exponential backoff for 429 responses. ## Stripe Payment Integration Stripe provides both client-side (Stripe.js) and server-side APIs. For PCI compliance, never pass raw card numbers through your server—use Stripe Elements or the Payment Intents API. Webhooks are essential for handling asynchronous events like payment succeeded or subscription renewed. Configure your webhook endpoint to verify signatures using the Stripe-Signature header. ## ShipStation Integration The ShipStation API is REST-based. Authentication uses API key and API secret in the Authorization header. Endpoints cover orders, shipments, carriers, and warehouses. Poll for new orders or use webhooks if available for your plan. Batch operations are supported for bulk label creation. ## Twilio SMS Integration Twilio's REST API requires Account SID and Auth Token. The Messaging API endpoint is /2010-04-01/Accounts/{AccountSid}/Messages.json. For two-way messaging, configure a webhook URL to receive incoming messages. Consider using a queue for high-volume outbound SMS to avoid rate limits. # PentaCodes Technical Reference and Integration Documentation # Version 1.0 | Last Updated March 2025 # This document contains technical reference material for common integrations and deployment procedures. ## QuickBooks Online Integration The QuickBooks Online API uses OAuth 2.0 for authentication. You will need to register your application in the Intuit Developer Portal to obtain client credentials. The base URL for the API is https://quickbooks.api.intuit.com/v3/company/{realmId}. Common endpoints include /invoice, /customer, /payment, and /bill. Rate limits apply: 500 requests per minute for production apps. Always implement exponential backoff for 429 responses. ## Stripe Payment Integration Stripe provides both client-side (Stripe.js) and server-side APIs. For PCI compliance, never pass raw card numbers through your server—use Stripe Elements or the Payment Intents API. Webhooks are essential for handling asynchronous events like payment succeeded or subscription renewed. Configure your webhook endpoint to verify signatures using the Stripe-Signature header. ## ShipStation Integration The ShipStation API is REST-based. Authentication uses API key and API secret in the Authorization header. Endpoints cover orders, shipments, carriers, and warehouses. Poll for new orders or use webhooks if available for your plan. Batch operations are supported for bulk label creation. ## Twilio SMS Integration Twilio's REST API requires Account SID and Auth Token. The Messaging API endpoint is /2010-04-01/Accounts/{AccountSid}/Messages.json. For two-way messaging, configure a webhook URL to receive incoming messages. Consider using a queue for high-volume outbound SMS to avoid rate limits. # PentaCodes Technical Reference and Integration Documentation # Version 1.0 | Last Updated March 2025 # This document contains technical reference material for common integrations and deployment procedures. ## QuickBooks Online Integration The QuickBooks Online API uses OAuth 2.0 for authentication. You will need to register your application in the Intuit Developer Portal to obtain client credentials. The base URL for the API is https://quickbooks.api.intuit.com/v3/company/{realmId}. Common endpoints include /invoice, /customer, /payment, and /bill. Rate limits apply: 500 requests per minute for production apps. Always implement exponential backoff for 429 responses. ## Stripe Payment Integration Stripe provides both client-side (Stripe.js) and server-side APIs. For PCI compliance, never pass raw card numbers through your server—use Stripe Elements or the Payment Intents API. Webhooks are essential for handling asynchronous events like payment succeeded or subscription renewed. Configure your webhook endpoint to verify signatures using the Stripe-Signature header. ## ShipStation Integration The ShipStation API is REST-based. Authentication uses API key and API secret in the Authorization header. Endpoints cover orders, shipments, carriers, and warehouses. Poll for new orders or use webhooks if available for your plan. Batch operations are supported for bulk label creation. ## Twilio SMS Integration Twilio's REST API requires Account SID and Auth Token. The Messaging API endpoint is /2010-04-01/Accounts/{AccountSid}/Messages.json. For two-way messaging, configure a webhook URL to receive incoming messages. Consider using a queue for high-volume outbound SMS to avoid rate limits. # PentaCodes Technical Reference and Integration Documentation # Version 1.0 | Last Updated March 2025 # This document contains technical reference material for common integrations and deployment procedures. ## QuickBooks Online Integration The QuickBooks Online API uses OAuth 2.0 for authentication. You will need to register your application in the Intuit Developer Portal to obtain client credentials. The base URL for the API is https://quickbooks.api.intuit.com/v3/company/{realmId}. Common endpoints include /invoice, /customer, /payment, and /bill. Rate limits apply: 500 requests per minute for production apps. Always implement exponential backoff for 429 responses. ## Stripe Payment Integration Stripe provides both client-side (Stripe.js) and server-side APIs. For PCI compliance, never pass raw card numbers through your server—use Stripe Elements or the Payment Intents API. Webhooks are essential for handling asynchronous events like payment succeeded or subscription renewed. Configure your webhook endpoint to verify signatures using the Stripe-Signature header. ## ShipStation Integration The ShipStation API is REST-based. Authentication uses API key and API secret in the Authorization header. Endpoints cover orders, shipments, carriers, and warehouses. Poll for new orders or use webhooks if available for your plan. Batch operations are supported for bulk label creation. ## Twilio SMS Integration Twilio's REST API requires Account SID and Auth Token. The Messaging API endpoint is /2010-04-01/Accounts/{AccountSid}/Messages.json. For two-way messaging, configure a webhook URL to receive incoming messages. Consider using a queue for high-volume outbound SMS to avoid rate limits. # PentaCodes Technical Reference and Integration Documentation # Version 1.0 | Last Updated March 2025 # This document contains technical reference material for common integrations and deployment procedures. ## QuickBooks Online Integration The QuickBooks Online API uses OAuth 2.0 for authentication. You will need to register your application in the Intuit Developer Portal to obtain client credentials. The base URL for the API is https://quickbooks.api.intuit.com/v3/company/{realmId}. Common endpoints include /invoice, /customer, /payment, and /bill. Rate limits apply: 500 requests per minute for production apps. Always implement exponential backoff for 429 responses. ## Stripe Payment Integration Stripe provides both client-side (Stripe.js) and server-side APIs. For PCI compliance, never pass raw card numbers through your server—use Stripe Elements or the Payment Intents API. Webhooks are essential for handling asynchronous events like payment succeeded or subscription renewed. Configure your webhook endpoint to verify signatures using the Stripe-Signature header. ## ShipStation Integration The ShipStation API is REST-based. Authentication uses API key and API secret in the Authorization header. Endpoints cover orders, shipments, carriers, and warehouses. Poll for new orders or use webhooks if available for your plan. Batch operations are supported for bulk label creation. ## Twilio SMS Integration Twilio's REST API requires Account SID and Auth Token. The Messaging API endpoint is /2010-04-01/Accounts/{AccountSid}/Messages.json. For two-way messaging, configure a webhook URL to receive incoming messages. Consider using a queue for high-volume outbound SMS to avoid rate limits. # PentaCodes Technical Reference and Integration Documentation # Version 1.0 | Last Updated March 2025 # This document contains technical reference material for common integrations and deployment procedures. ## QuickBooks Online Integration The QuickBooks Online API uses OAuth 2.0 for authentication. You will need to register your application in the Intuit Developer Portal to obtain client credentials. The base URL for the API is https://quickbooks.api.intuit.com/v3/company/{realmId}. Common endpoints include /invoice, /customer, /payment, and /bill. Rate limits apply: 500 requests per minute for production apps. Always implement exponential backoff for 429 responses. ## Stripe Payment Integration Stripe provides both client-side (Stripe.js) and server-side APIs. For PCI compliance, never pass raw card numbers through your server—use Stripe Elements or the Payment Intents API. Webhooks are essential for handling asynchronous events like payment succeeded or subscription renewed. Configure your webhook endpoint to verify signatures using the Stripe-Signature header. ## ShipStation Integration The ShipStation API is REST-based. Authentication uses API key and API secret in the Authorization header. Endpoints cover orders, shipments, carriers, and warehouses. Poll for new orders or use webhooks if available for your plan. Batch operations are supported for bulk label creation. ## Twilio SMS Integration Twilio's REST API requires Account SID and Auth Token. The Messaging API endpoint is /2010-04-01/Accounts/{AccountSid}/Messages.json. For two-way messaging, configure a webhook URL to receive incoming messages. Consider using a queue for high-volume outbound SMS to avoid rate limits. # PentaCodes Technical Reference and Integration Documentation # Version 1.0 | Last Updated March 2025 # This document contains technical reference material for common integrations and deployment procedures. ## QuickBooks Online Integration The QuickBooks Online API uses OAuth 2.0 for authentication. You will need to register your application in the Intuit Developer Portal to obtain client credentials. The base URL for the API is https://quickbooks.api.intuit.com/v3/company/{realmId}. Common endpoints include /invoice, /customer, /payment, and /bill. Rate limits apply: 500 requests per minute for production apps. Always implement exponential backoff for 429 responses. ## Stripe Payment Integration Stripe provides both client-side (Stripe.js) and server-side APIs. For PCI compliance, never pass raw card numbers through your server—use Stripe Elements or the Payment Intents API. Webhooks are essential for handling asynchronous events like payment succeeded or subscription renewed. Configure your webhook endpoint to verify signatures using the Stripe-Signature header. ## ShipStation Integration The ShipStation API is REST-based. Authentication uses API key and API secret in the Authorization header. Endpoints cover orders, shipments, carriers, and warehouses. Poll for new orders or use webhooks if available for your plan. Batch operations are supported for bulk label creation. ## Twilio SMS Integration Twilio's REST API requires Account SID and Auth Token. The Messaging API endpoint is /2010-04-01/Accounts/{AccountSid}/Messages.json. For two-way messaging, configure a webhook URL to receive incoming messages. Consider using a queue for high-volume outbound SMS to avoid rate limits. # PentaCodes Technical Reference and Integration Documentation # Version 1.0 | Last Updated March 2025 # This document contains technical reference material for common integrations and deployment procedures. ## QuickBooks Online Integration The QuickBooks Online API uses OAuth 2.0 for authentication. You will need to register your application in the Intuit Developer Portal to obtain client credentials. The base URL for the API is https://quickbooks.api.intuit.com/v3/company/{realmId}. Common endpoints include /invoice, /customer, /payment, and /bill. Rate limits apply: 500 requests per minute for production apps. Always implement exponential backoff for 429 responses. ## Stripe Payment Integration Stripe provides both client-side (Stripe.js) and server-side APIs. For PCI compliance, never pass raw card numbers through your server—use Stripe Elements or the Payment Intents API. Webhooks are essential for handling asynchronous events like payment succeeded or subscription renewed. Configure your webhook endpoint to verify signatures using the Stripe-Signature header. ## ShipStation Integration The ShipStation API is REST-based. Authentication uses API key and API secret in the Authorization header. Endpoints cover orders, shipments, carriers, and warehouses. Poll for new orders or use webhooks if available for your plan. Batch operations are supported for bulk label creation. ## Twilio SMS Integration Twilio's REST API requires Account SID and Auth Token. The Messaging API endpoint is /2010-04-01/Accounts/{AccountSid}/Messages.json. For two-way messaging, configure a webhook URL to receive incoming messages. Consider using a queue for high-volume outbound SMS to avoid rate limits. # PentaCodes Technical Reference and Integration Documentation # Version 1.0 | Last Updated March 2025 # This document contains technical reference material for common integrations and deployment procedures. ## QuickBooks Online Integration The QuickBooks Online API uses OAuth 2.0 for authentication. You will need to register your application in the Intuit Developer Portal to obtain client credentials. The base URL for the API is https://quickbooks.api.intuit.com/v3/company/{realmId}. Common endpoints include /invoice, /customer, /payment, and /bill. Rate limits apply: 500 requests per minute for production apps. Always implement exponential backoff for 429 responses. ## Stripe Payment Integration Stripe provides both client-side (Stripe.js) and server-side APIs. For PCI compliance, never pass raw card numbers through your server—use Stripe Elements or the Payment Intents API. Webhooks are essential for handling asynchronous events like payment succeeded or subscription renewed. Configure your webhook endpoint to verify signatures using the Stripe-Signature header. ## ShipStation Integration The ShipStation API is REST-based. Authentication uses API key and API secret in the Authorization header. Endpoints cover orders, shipments, carriers, and warehouses. Poll for new orders or use webhooks if available for your plan. Batch operations are supported for bulk label creation. ## Twilio SMS Integration Twilio's REST API requires Account SID and Auth Token. The Messaging API endpoint is /2010-04-01/Accounts/{AccountSid}/Messages.json. For two-way messaging, configure a webhook URL to receive incoming messages. Consider using a queue for high-volume outbound SMS to avoid rate limits. # PentaCodes Technical Reference and Integration Documentation # Version 1.0 | Last Updated March 2025 # This document contains technical reference material for common integrations and deployment procedures. ## QuickBooks Online Integration The QuickBooks Online API uses OAuth 2.0 for authentication. You will need to register your application in the Intuit Developer Portal to obtain client credentials. The base URL for the API is https://quickbooks.api.intuit.com/v3/company/{realmId}. Common endpoints include /invoice, /customer, /payment, and /bill. Rate limits apply: 500 requests per minute for production apps. Always implement exponential backoff for 429 responses. ## Stripe Payment Integration Stripe provides both client-side (Stripe.js) and server-side APIs. For PCI compliance, never pass raw card numbers through your server—use Stripe Elements or the Payment Intents API. Webhooks are essential for handling asynchronous events like payment succeeded or subscription renewed. Configure your webhook endpoint to verify signatures using the Stripe-Signature header. ## ShipStation Integration The ShipStation API is REST-based. Authentication uses API key and API secret in the Authorization header. Endpoints cover orders, shipments, carriers, and warehouses. Poll for new orders or use webhooks if available for your plan. Batch operations are supported for bulk label creation. ## Twilio SMS Integration Twilio's REST API requires Account SID and Auth Token. The Messaging API endpoint is /2010-04-01/Accounts/{AccountSid}/Messages.json. For two-way messaging, configure a webhook URL to receive incoming messages. Consider using a queue for high-volume outbound SMS to avoid rate limits. # PentaCodes Technical Reference and Integration Documentation # Version 1.0 | Last Updated March 2025 # This document contains technical reference material for common integrations and deployment procedures. ## QuickBooks Online Integration The QuickBooks Online API uses OAuth 2.0 for authentication. You will need to register your application in the Intuit Developer Portal to obtain client credentials. The base URL for the API is https://quickbooks.api.intuit.com/v3/company/{realmId}. Common endpoints include /invoice, /customer, /payment, and /bill. Rate limits apply: 500 requests per minute for production apps. Always implement exponential backoff for 429 responses. ## Stripe Payment Integration Stripe provides both client-side (Stripe.js) and server-side APIs. For PCI compliance, never pass raw card numbers through your server—use Stripe Elements or the Payment Intents API. Webhooks are essential for handling asynchronous events like payment succeeded or subscription renewed. Configure your webhook endpoint to verify signatures using the Stripe-Signature header. ## ShipStation Integration The ShipStation API is REST-based. Authentication uses API key and API secret in the Authorization header. Endpoints cover orders, shipments, carriers, and warehouses. Poll for new orders or use webhooks if available for your plan. Batch operations are supported for bulk label creation. ## Twilio SMS Integration Twilio's REST API requires Account SID and Auth Token. The Messaging API endpoint is /2010-04-01/Accounts/{AccountSid}/Messages.json. For two-way messaging, configure a webhook URL to receive incoming messages. Consider using a queue for high-volume outbound SMS to avoid rate limits. # PentaCodes Technical Reference and Integration Documentation # Version 1.0 | Last Updated March 2025 # This document contains technical reference material for common integrations and deployment procedures. ## QuickBooks Online Integration The QuickBooks Online API uses OAuth 2.0 for authentication. You will need to register your application in the Intuit Developer Portal to obtain client credentials. The base URL for the API is https://quickbooks.api.intuit.com/v3/company/{realmId}. Common endpoints include /invoice, /customer, /payment, and /bill. Rate limits apply: 500 requests per minute for production apps. Always implement exponential backoff for 429 responses. ## Stripe Payment Integration Stripe provides both client-side (Stripe.js) and server-side APIs. For PCI compliance, never pass raw card numbers through your server—use Stripe Elements or the Payment Intents API. Webhooks are essential for handling asynchronous events like payment succeeded or subscription renewed. Configure your webhook endpoint to verify signatures using the Stripe-Signature header. ## ShipStation Integration The ShipStation API is REST-based. Authentication uses API key and API secret in the Authorization header. Endpoints cover orders, shipments, carriers, and warehouses. Poll for new orders or use webhooks if available for your plan. Batch operations are supported for bulk label creation. ## Twilio SMS Integration Twilio's REST API requires Account SID and Auth Token. The Messaging API endpoint is /2010-04-01/Accounts/{AccountSid}/Messages.json. For two-way messaging, configure a webhook URL to receive incoming messages. Consider using a queue for high-volume outbound SMS to avoid rate limits. # PentaCodes Technical Reference and Integration Documentation # Version 1.0 | Last Updated March 2025 # This document contains technical reference material for common integrations and deployment procedures. ## QuickBooks Online Integration The QuickBooks Online API uses OAuth 2.0 for authentication. You will need to register your application in the Intuit Developer Portal to obtain client credentials. The base URL for the API is https://quickbooks.api.intuit.com/v3/company/{realmId}. Common endpoints include /invoice, /customer, /payment, and /bill. Rate limits apply: 500 requests per minute for production apps. Always implement exponential backoff for 429 responses. ## Stripe Payment Integration Stripe provides both client-side (Stripe.js) and server-side APIs. For PCI compliance, never pass raw card numbers through your server—use Stripe Elements or the Payment Intents API. Webhooks are essential for handling asynchronous events like payment succeeded or subscription renewed. Configure your webhook endpoint to verify signatures using the Stripe-Signature header. ## ShipStation Integration The ShipStation API is REST-based. Authentication uses API key and API secret in the Authorization header. Endpoints cover orders, shipments, carriers, and warehouses. Poll for new orders or use webhooks if available for your plan. Batch operations are supported for bulk label creation. ## Twilio SMS Integration Twilio's REST API requires Account SID and Auth Token. The Messaging API endpoint is /2010-04-01/Accounts/{AccountSid}/Messages.json. For two-way messaging, configure a webhook URL to receive incoming messages. Consider using a queue for high-volume outbound SMS to avoid rate limits. # PentaCodes Technical Reference and Integration Documentation # Version 1.0 | Last Updated March 2025 # This document contains technical reference material for common integrations and deployment procedures. ## QuickBooks Online Integration The QuickBooks Online API uses OAuth 2.0 for authentication. You will need to register your application in the Intuit Developer Portal to obtain client credentials. The base URL for the API is https://quickbooks.api.intuit.com/v3/company/{realmId}. Common endpoints include /invoice, /customer, /payment, and /bill. Rate limits apply: 500 requests per minute for production apps. Always implement exponential backoff for 429 responses. ## Stripe Payment Integration Stripe provides both client-side (Stripe.js) and server-side APIs. For PCI compliance, never pass raw card numbers through your server—use Stripe Elements or the Payment Intents API. Webhooks are essential for handling asynchronous events like payment succeeded or subscription renewed. Configure your webhook endpoint to verify signatures using the Stripe-Signature header. ## ShipStation Integration The ShipStation API is REST-based. Authentication uses API key and API secret in the Authorization header. Endpoints cover orders, shipments, carriers, and warehouses. Poll for new orders or use webhooks if available for your plan. Batch operations are supported for bulk label creation. ## Twilio SMS Integration Twilio's REST API requires Account SID and Auth Token. The Messaging API endpoint is /2010-04-01/Accounts/{AccountSid}/Messages.json. For two-way messaging, configure a webhook URL to receive incoming messages. Consider using a queue for high-volume outbound SMS to avoid rate limits. # PentaCodes Technical Reference and Integration Documentation # Version 1.0 | Last Updated March 2025 # This document contains technical reference material for common integrations and deployment procedures. ## QuickBooks Online Integration The QuickBooks Online API uses OAuth 2.0 for authentication. You will need to register your application in the Intuit Developer Portal to obtain client credentials. The base URL for the API is https://quickbooks.api.intuit.com/v3/company/{realmId}. Common endpoints include /invoice, /customer, /payment, and /bill. Rate limits apply: 500 requests per minute for production apps. Always implement exponential backoff for 429 responses. ## Stripe Payment Integration Stripe provides both client-side (Stripe.js) and server-side APIs. For PCI compliance, never pass raw card numbers through your server—use Stripe Elements or the Payment Intents API. Webhooks are essential for handling asynchronous events like payment succeeded or subscription renewed. Configure your webhook endpoint to verify signatures using the Stripe-Signature header. ## ShipStation Integration The ShipStation API is REST-based. Authentication uses API key and API secret in the Authorization header. Endpoints cover orders, shipments, carriers, and warehouses. Poll for new orders or use webhooks if available for your plan. Batch operations are supported for bulk label creation. ## Twilio SMS Integration Twilio's REST API requires Account SID and Auth Token. The Messaging API endpoint is /2010-04-01/Accounts/{AccountSid}/Messages.json. For two-way messaging, configure a webhook URL to receive incoming messages. Consider using a queue for high-volume outbound SMS to avoid rate limits. # PentaCodes Technical Reference and Integration Documentation # Version 1.0 | Last Updated March 2025 # This document contains technical reference material for common integrations and deployment procedures. ## QuickBooks Online Integration The QuickBooks Online API uses OAuth 2.0 for authentication. You will need to register your application in the Intuit Developer Portal to obtain client credentials. The base URL for the API is https://quickbooks.api.intuit.com/v3/company/{realmId}. Common endpoints include /invoice, /customer, /payment, and /bill. Rate limits apply: 500 requests per minute for production apps. Always implement exponential backoff for 429 responses. ## Stripe Payment Integration Stripe provides both client-side (Stripe.js) and server-side APIs. For PCI compliance, never pass raw card numbers through your server—use Stripe Elements or the Payment Intents API. Webhooks are essential for handling asynchronous events like payment succeeded or subscription renewed. Configure your webhook endpoint to verify signatures using the Stripe-Signature header. ## ShipStation Integration The ShipStation API is REST-based. Authentication uses API key and API secret in the Authorization header. Endpoints cover orders, shipments, carriers, and warehouses. Poll for new orders or use webhooks if available for your plan. Batch operations are supported for bulk label creation. ## Twilio SMS Integration Twilio's REST API requires Account SID and Auth Token. The Messaging API endpoint is /2010-04-01/Accounts/{AccountSid}/Messages.json. For two-way messaging, configure a webhook URL to receive incoming messages. Consider using a queue for high-volume outbound SMS to avoid rate limits. # PentaCodes Technical Reference and Integration Documentation # Version 1.0 | Last Updated March 2025 # This document contains technical reference material for common integrations and deployment procedures. ## QuickBooks Online Integration The QuickBooks Online API uses OAuth 2.0 for authentication. You will need to register your application in the Intuit Developer Portal to obtain client credentials. The base URL for the API is https://quickbooks.api.intuit.com/v3/company/{realmId}. Common endpoints include /invoice, /customer, /payment, and /bill. Rate limits apply: 500 requests per minute for production apps. Always implement exponential backoff for 429 responses. ## Stripe Payment Integration Stripe provides both client-side (Stripe.js) and server-side APIs. For PCI compliance, never pass raw card numbers through your server—use Stripe Elements or the Payment Intents API. Webhooks are essential for handling asynchronous events like payment succeeded or subscription renewed. Configure your webhook endpoint to verify signatures using the Stripe-Signature header. ## ShipStation Integration The ShipStation API is REST-based. Authentication uses API key and API secret in the Authorization header. Endpoints cover orders, shipments, carriers, and warehouses. Poll for new orders or use webhooks if available for your plan. Batch operations are supported for bulk label creation. ## Twilio SMS Integration Twilio's REST API requires Account SID and Auth Token. The Messaging API endpoint is /2010-04-01/Accounts/{AccountSid}/Messages.json. For two-way messaging, configure a webhook URL to receive incoming messages. Consider using a queue for high-volume outbound SMS to avoid rate limits. # PentaCodes Technical Reference and Integration Documentation # Version 1.0 | Last Updated March 2025 # This document contains technical reference material for common integrations and deployment procedures. ## QuickBooks Online Integration The QuickBooks Online API uses OAuth 2.0 for authentication. You will need to register your application in the Intuit Developer Portal to obtain client credentials. The base URL for the API is https://quickbooks.api.intuit.com/v3/company/{realmId}. Common endpoints include /invoice, /customer, /payment, and /bill. Rate limits apply: 500 requests per minute for production apps. Always implement exponential backoff for 429 responses. ## Stripe Payment Integration Stripe provides both client-side (Stripe.js) and server-side APIs. For PCI compliance, never pass raw card numbers through your server—use Stripe Elements or the Payment Intents API. Webhooks are essential for handling asynchronous events like payment succeeded or subscription renewed. Configure your webhook endpoint to verify signatures using the Stripe-Signature header. ## ShipStation Integration The ShipStation API is REST-based. Authentication uses API key and API secret in the Authorization header. Endpoints cover orders, shipments, carriers, and warehouses. Poll for new orders or use webhooks if available for your plan. Batch operations are supported for bulk label creation. ## Twilio SMS Integration Twilio's REST API requires Account SID and Auth Token. The Messaging API endpoint is /2010-04-01/Accounts/{AccountSid}/Messages.json. For two-way messaging, configure a webhook URL to receive incoming messages. Consider using a queue for high-volume outbound SMS to avoid rate limits. # PentaCodes Technical Reference and Integration Documentation # Version 1.0 | Last Updated March 2025 # This document contains technical reference material for common integrations and deployment procedures. ## QuickBooks Online Integration The QuickBooks Online API uses OAuth 2.0 for authentication. You will need to register your application in the Intuit Developer Portal to obtain client credentials. The base URL for the API is https://quickbooks.api.intuit.com/v3/company/{realmId}. Common endpoints include /invoice, /customer, /payment, and /bill. Rate limits apply: 500 requests per minute for production apps. Always implement exponential backoff for 429 responses. ## Stripe Payment Integration Stripe provides both client-side (Stripe.js) and server-side APIs. For PCI compliance, never pass raw card numbers through your server—use Stripe Elements or the Payment Intents API. Webhooks are essential for handling asynchronous events like payment succeeded or subscription renewed. Configure your webhook endpoint to verify signatures using the Stripe-Signature header. ## ShipStation Integration The ShipStation API is REST-based. Authentication uses API key and API secret in the Authorization header. Endpoints cover orders, shipments, carriers, and warehouses. Poll for new orders or use webhooks if available for your plan. Batch operations are supported for bulk label creation. ## Twilio SMS Integration Twilio's REST API requires Account SID and Auth Token. The Messaging API endpoint is /2010-04-01/Accounts/{AccountSid}/Messages.json. For two-way messaging, configure a webhook URL to receive incoming messages. Consider using a queue for high-volume outbound SMS to avoid rate limits. # PentaCodes Technical Reference and Integration Documentation # Version 1.0 | Last Updated March 2025 # This document contains technical reference material for common integrations and deployment procedures. ## QuickBooks Online Integration The QuickBooks Online API uses OAuth 2.0 for authentication. You will need to register your application in the Intuit Developer Portal to obtain client credentials. The base URL for the API is https://quickbooks.api.intuit.com/v3/company/{realmId}. Common endpoints include /invoice, /customer, /payment, and /bill. Rate limits apply: 500 requests per minute for production apps. Always implement exponential backoff for 429 responses. ## Stripe Payment Integration Stripe provides both client-side (Stripe.js) and server-side APIs. For PCI compliance, never pass raw card numbers through your server—use Stripe Elements or the Payment Intents API. Webhooks are essential for handling asynchronous events like payment succeeded or subscription renewed. Configure your webhook endpoint to verify signatures using the Stripe-Signature header. ## ShipStation Integration The ShipStation API is REST-based. Authentication uses API key and API secret in the Authorization header. Endpoints cover orders, shipments, carriers, and warehouses. Poll for new orders or use webhooks if available for your plan. Batch operations are supported for bulk label creation. ## Twilio SMS Integration Twilio's REST API requires Account SID and Auth Token. The Messaging API endpoint is /2010-04-01/Accounts/{AccountSid}/Messages.json. For two-way messaging, configure a webhook URL to receive incoming messages. Consider using a queue for high-volume outbound SMS to avoid rate limits. # PentaCodes Technical Reference and Integration Documentation # Version 1.0 | Last Updated March 2025 # This document contains technical reference material for common integrations and deployment procedures. ## QuickBooks Online Integration The QuickBooks Online API uses OAuth 2.0 for authentication. You will need to register your application in the Intuit Developer Portal to obtain client credentials. The base URL for the API is https://quickbooks.api.intuit.com/v3/company/{realmId}. Common endpoints include /invoice, /customer, /payment, and /bill. Rate limits apply: 500 requests per minute for production apps. Always implement exponential backoff for 429 responses. ## Stripe Payment Integration Stripe provides both client-side (Stripe.js) and server-side APIs. For PCI compliance, never pass raw card numbers through your server—use Stripe Elements or the Payment Intents API. Webhooks are essential for handling asynchronous events like payment succeeded or subscription renewed. Configure your webhook endpoint to verify signatures using the Stripe-Signature header. ## ShipStation Integration The ShipStation API is REST-based. Authentication uses API key and API secret in the Authorization header. Endpoints cover orders, shipments, carriers, and warehouses. Poll for new orders or use webhooks if available for your plan. Batch operations are supported for bulk label creation. ## Twilio SMS Integration Twilio's REST API requires Account SID and Auth Token. The Messaging API endpoint is /2010-04-01/Accounts/{AccountSid}/Messages.json. For two-way messaging, configure a webhook URL to receive incoming messages. Consider using a queue for high-volume outbound SMS to avoid rate limits. # PentaCodes Technical Reference and Integration Documentation # Version 1.0 | Last Updated March 2025 # This document contains technical reference material for common integrations and deployment procedures. ## QuickBooks Online Integration The QuickBooks Online API uses OAuth 2.0 for authentication. You will need to register your application in the Intuit Developer Portal to obtain client credentials. The base URL for the API is https://quickbooks.api.intuit.com/v3/company/{realmId}. Common endpoints include /invoice, /customer, /payment, and /bill. Rate limits apply: 500 requests per minute for production apps. Always implement exponential backoff for 429 responses. ## Stripe Payment Integration Stripe provides both client-side (Stripe.js) and server-side APIs. For PCI compliance, never pass raw card numbers through your server—use Stripe Elements or the Payment Intents API. Webhooks are essential for handling asynchronous events like payment succeeded or subscription renewed. Configure your webhook endpoint to verify signatures using the Stripe-Signature header. ## ShipStation Integration The ShipStation API is REST-based. Authentication uses API key and API secret in the Authorization header. Endpoints cover orders, shipments, carriers, and warehouses. Poll for new orders or use webhooks if available for your plan. Batch operations are supported for bulk label creation. ## Twilio SMS Integration Twilio's REST API requires Account SID and Auth Token. The Messaging API endpoint is /2010-04-01/Accounts/{AccountSid}/Messages.json. For two-way messaging, configure a webhook URL to receive incoming messages. Consider using a queue for high-volume outbound SMS to avoid rate limits. # PentaCodes Technical Reference and Integration Documentation # Version 1.0 | Last Updated March 2025 # This document contains technical reference material for common integrations and deployment procedures. ## QuickBooks Online Integration The QuickBooks Online API uses OAuth 2.0 for authentication. You will need to register your application in the Intuit Developer Portal to obtain client credentials. The base URL for the API is https://quickbooks.api.intuit.com/v3/company/{realmId}. Common endpoints include /invoice, /customer, /payment, and /bill. Rate limits apply: 500 requests per minute for production apps. Always implement exponential backoff for 429 responses. ## Stripe Payment Integration Stripe provides both client-side (Stripe.js) and server-side APIs. For PCI compliance, never pass raw card numbers through your server—use Stripe Elements or the Payment Intents API. Webhooks are essential for handling asynchronous events like payment succeeded or subscription renewed. Configure your webhook endpoint to verify signatures using the Stripe-Signature header. ## ShipStation Integration The ShipStation API is REST-based. Authentication uses API key and API secret in the Authorization header. Endpoints cover orders, shipments, carriers, and warehouses. Poll for new orders or use webhooks if available for your plan. Batch operations are supported for bulk label creation. ## Twilio SMS Integration Twilio's REST API requires Account SID and Auth Token. The Messaging API endpoint is /2010-04-01/Accounts/{AccountSid}/Messages.json. For two-way messaging, configure a webhook URL to receive incoming messages. Consider using a queue for high-volume outbound SMS to avoid rate limits. # PentaCodes Technical Reference and Integration Documentation # Version 1.0 | Last Updated March 2025 # This document contains technical reference material for common integrations and deployment procedures. ## QuickBooks Online Integration The QuickBooks Online API uses OAuth 2.0 for authentication. You will need to register your application in the Intuit Developer Portal to obtain client credentials. The base URL for the API is https://quickbooks.api.intuit.com/v3/company/{realmId}. Common endpoints include /invoice, /customer, /payment, and /bill. Rate limits apply: 500 requests per minute for production apps. Always implement exponential backoff for 429 responses. ## Stripe Payment Integration Stripe provides both client-side (Stripe.js) and server-side APIs. For PCI compliance, never pass raw card numbers through your server—use Stripe Elements or the Payment Intents API. Webhooks are essential for handling asynchronous events like payment succeeded or subscription renewed. Configure your webhook endpoint to verify signatures using the Stripe-Signature header. ## ShipStation Integration The ShipStation API is REST-based. Authentication uses API key and API secret in the Authorization header. Endpoints cover orders, shipments, carriers, and warehouses. Poll for new orders or use webhooks if available for your plan. Batch operations are supported for bulk label creation. ## Twilio SMS Integration Twilio's REST API requires Account SID and Auth Token. The Messaging API endpoint is /2010-04-01/Accounts/{AccountSid}/Messages.json. For two-way messaging, configure a webhook URL to receive incoming messages. Consider using a queue for high-volume outbound SMS to avoid rate limits. # PentaCodes Technical Reference and Integration Documentation # Version 1.0 | Last Updated March 2025 # This document contains technical reference material for common integrations and deployment procedures. ## QuickBooks Online Integration The QuickBooks Online API uses OAuth 2.0 for authentication. You will need to register your application in the Intuit Developer Portal to obtain client credentials. The base URL for the API is https://quickbooks.api.intuit.com/v3/company/{realmId}. Common endpoints include /invoice, /customer, /payment, and /bill. Rate limits apply: 500 requests per minute for production apps. Always implement exponential backoff for 429 responses. ## Stripe Payment Integration Stripe provides both client-side (Stripe.js) and server-side APIs. For PCI compliance, never pass raw card numbers through your server—use Stripe Elements or the Payment Intents API. Webhooks are essential for handling asynchronous events like payment succeeded or subscription renewed. Configure your webhook endpoint to verify signatures using the Stripe-Signature header. ## ShipStation Integration The ShipStation API is REST-based. Authentication uses API key and API secret in the Authorization header. Endpoints cover orders, shipments, carriers, and warehouses. Poll for new orders or use webhooks if available for your plan. Batch operations are supported for bulk label creation. ## Twilio SMS Integration Twilio's REST API requires Account SID and Auth Token. The Messaging API endpoint is /2010-04-01/Accounts/{AccountSid}/Messages.json. For two-way messaging, configure a webhook URL to receive incoming messages. Consider using a queue for high-volume outbound SMS to avoid rate limits. # PentaCodes Technical Reference and Integration Documentation # Version 1.0 | Last Updated March 2025 # This document contains technical reference material for common integrations and deployment procedures. ## QuickBooks Online Integration The QuickBooks Online API uses OAuth 2.0 for authentication. You will need to register your application in the Intuit Developer Portal to obtain client credentials. The base URL for the API is https://quickbooks.api.intuit.com/v3/company/{realmId}. Common endpoints include /invoice, /customer, /payment, and /bill. Rate limits apply: 500 requests per minute for production apps. Always implement exponential backoff for 429 responses. ## Stripe Payment Integration Stripe provides both client-side (Stripe.js) and server-side APIs. For PCI compliance, never pass raw card numbers through your server—use Stripe Elements or the Payment Intents API. Webhooks are essential for handling asynchronous events like payment succeeded or subscription renewed. Configure your webhook endpoint to verify signatures using the Stripe-Signature header. ## ShipStation Integration The ShipStation API is REST-based. Authentication uses API key and API secret in the Authorization header. Endpoints cover orders, shipments, carriers, and warehouses. Poll for new orders or use webhooks if available for your plan. Batch operations are supported for bulk label creation. ## Twilio SMS Integration Twilio's REST API requires Account SID and Auth Token. The Messaging API endpoint is /2010-04-01/Accounts/{AccountSid}/Messages.json. For two-way messaging, configure a webhook URL to receive incoming messages. Consider using a queue for high-volume outbound SMS to avoid rate limits. # PentaCodes Technical Reference and Integration Documentation # Version 1.0 | Last Updated March 2025 # This document contains technical reference material for common integrations and deployment procedures. ## QuickBooks Online Integration The QuickBooks Online API uses OAuth 2.0 for authentication. You will need to register your application in the Intuit Developer Portal to obtain client credentials. The base URL for the API is https://quickbooks.api.intuit.com/v3/company/{realmId}. Common endpoints include /invoice, /customer, /payment, and /bill. Rate limits apply: 500 requests per minute for production apps. Always implement exponential backoff for 429 responses. ## Stripe Payment Integration Stripe provides both client-side (Stripe.js) and server-side APIs. For PCI compliance, never pass raw card numbers through your server—use Stripe Elements or the Payment Intents API. Webhooks are essential for handling asynchronous events like payment succeeded or subscription renewed. Configure your webhook endpoint to verify signatures using the Stripe-Signature header. ## ShipStation Integration The ShipStation API is REST-based. Authentication uses API key and API secret in the Authorization header. Endpoints cover orders, shipments, carriers, and warehouses. Poll for new orders or use webhooks if available for your plan. Batch operations are supported for bulk label creation. ## Twilio SMS Integration Twilio's REST API requires Account SID and Auth Token. The Messaging API endpoint is /2010-04-01/Accounts/{AccountSid}/Messages.json. For two-way messaging, configure a webhook URL to receive incoming messages. Consider using a queue for high-volume outbound SMS to avoid rate limits. # PentaCodes Technical Reference and Integration Documentation # Version 1.0 | Last Updated March 2025 # This document contains technical reference material for common integrations and deployment procedures. ## QuickBooks Online Integration The QuickBooks Online API uses OAuth 2.0 for authentication. You will need to register your application in the Intuit Developer Portal to obtain client credentials. The base URL for the API is https://quickbooks.api.intuit.com/v3/company/{realmId}. Common endpoints include /invoice, /customer, /payment, and /bill. Rate limits apply: 500 requests per minute for production apps. Always implement exponential backoff for 429 responses. ## Stripe Payment Integration Stripe provides both client-side (Stripe.js) and server-side APIs. For PCI compliance, never pass raw card numbers through your server—use Stripe Elements or the Payment Intents API. Webhooks are essential for handling asynchronous events like payment succeeded or subscription renewed. Configure your webhook endpoint to verify signatures using the Stripe-Signature header. ## ShipStation Integration The ShipStation API is REST-based. Authentication uses API key and API secret in the Authorization header. Endpoints cover orders, shipments, carriers, and warehouses. Poll for new orders or use webhooks if available for your plan. Batch operations are supported for bulk label creation. ## Twilio SMS Integration Twilio's REST API requires Account SID and Auth Token. The Messaging API endpoint is /2010-04-01/Accounts/{AccountSid}/Messages.json. For two-way messaging, configure a webhook URL to receive incoming messages. Consider using a queue for high-volume outbound SMS to avoid rate limits. # PentaCodes Technical Reference and Integration Documentation # Version 1.0 | Last Updated March 2025 # This document contains technical reference material for common integrations and deployment procedures. ## QuickBooks Online Integration The QuickBooks Online API uses OAuth 2.0 for authentication. You will need to register your application in the Intuit Developer Portal to obtain client credentials. The base URL for the API is https://quickbooks.api.intuit.com/v3/company/{realmId}. Common endpoints include /invoice, /customer, /payment, and /bill. Rate limits apply: 500 requests per minute for production apps. Always implement exponential backoff for 429 responses. ## Stripe Payment Integration Stripe provides both client-side (Stripe.js) and server-side APIs. For PCI compliance, never pass raw card numbers through your server—use Stripe Elements or the Payment Intents API. Webhooks are essential for handling asynchronous events like payment succeeded or subscription renewed. Configure your webhook endpoint to verify signatures using the Stripe-Signature header. ## ShipStation Integration The ShipStation API is REST-based. Authentication uses API key and API secret in the Authorization header. Endpoints cover orders, shipments, carriers, and warehouses. Poll for new orders or use webhooks if available for your plan. Batch operations are supported for bulk label creation. ## Twilio SMS Integration Twilio's REST API requires Account SID and Auth Token. The Messaging API endpoint is /2010-04-01/Accounts/{AccountSid}/Messages.json. For two-way messaging, configure a webhook URL to receive incoming messages. Consider using a queue for high-volume outbound SMS to avoid rate limits. # PentaCodes Technical Reference and Integration Documentation # Version 1.0 | Last Updated March 2025 # This document contains technical reference material for common integrations and deployment procedures. ## QuickBooks Online Integration The QuickBooks Online API uses OAuth 2.0 for authentication. You will need to register your application in the Intuit Developer Portal to obtain client credentials. The base URL for the API is https://quickbooks.api.intuit.com/v3/company/{realmId}. Common endpoints include /invoice, /customer, /payment, and /bill. Rate limits apply: 500 requests per minute for production apps. Always implement exponential backoff for 429 responses. ## Stripe Payment Integration Stripe provides both client-side (Stripe.js) and server-side APIs. For PCI compliance, never pass raw card numbers through your server—use Stripe Elements or the Payment Intents API. Webhooks are essential for handling asynchronous events like payment succeeded or subscription renewed. Configure your webhook endpoint to verify signatures using the Stripe-Signature header. ## ShipStation Integration The ShipStation API is REST-based. Authentication uses API key and API secret in the Authorization header. Endpoints cover orders, shipments, carriers, and warehouses. Poll for new orders or use webhooks if available for your plan. Batch operations are supported for bulk label creation. ## Twilio SMS Integration Twilio's REST API requires Account SID and Auth Token. The Messaging API endpoint is /2010-04-01/Accounts/{AccountSid}/Messages.json. For two-way messaging, configure a webhook URL to receive incoming messages. Consider using a queue for high-volume outbound SMS to avoid rate limits. # PentaCodes Technical Reference and Integration Documentation # Version 1.0 | Last Updated March 2025 # This document contains technical reference material for common integrations and deployment procedures. ## QuickBooks Online Integration The QuickBooks Online API uses OAuth 2.0 for authentication. You will need to register your application in the Intuit Developer Portal to obtain client credentials. The base URL for the API is https://quickbooks.api.intuit.com/v3/company/{realmId}. Common endpoints include /invoice, /customer, /payment, and /bill. Rate limits apply: 500 requests per minute for production apps. Always implement exponential backoff for 429 responses. ## Stripe Payment Integration Stripe provides both client-side (Stripe.js) and server-side APIs. For PCI compliance, never pass raw card numbers through your server—use Stripe Elements or the Payment Intents API. Webhooks are essential for handling asynchronous events like payment succeeded or subscription renewed. Configure your webhook endpoint to verify signatures using the Stripe-Signature header. ## ShipStation Integration The ShipStation API is REST-based. Authentication uses API key and API secret in the Authorization header. Endpoints cover orders, shipments, carriers, and warehouses. Poll for new orders or use webhooks if available for your plan. Batch operations are supported for bulk label creation. ## Twilio SMS Integration Twilio's REST API requires Account SID and Auth Token. The Messaging API endpoint is /2010-04-01/Accounts/{AccountSid}/Messages.json. For two-way messaging, configure a webhook URL to receive incoming messages. Consider using a queue for high-volume outbound SMS to avoid rate limits. # PentaCodes Technical Reference and Integration Documentation # Version 1.0 | Last Updated March 2025 # This document contains technical reference material for common integrations and deployment procedures. ## QuickBooks Online Integration The QuickBooks Online API uses OAuth 2.0 for authentication. You will need to register your application in the Intuit Developer Portal to obtain client credentials. The base URL for the API is https://quickbooks.api.intuit.com/v3/company/{realmId}. Common endpoints include /invoice, /customer, /payment, and /bill. Rate limits apply: 500 requests per minute for production apps. Always implement exponential backoff for 429 responses. ## Stripe Payment Integration Stripe provides both client-side (Stripe.js) and server-side APIs. For PCI compliance, never pass raw card numbers through your server—use Stripe Elements or the Payment Intents API. Webhooks are essential for handling asynchronous events like payment succeeded or subscription renewed. Configure your webhook endpoint to verify signatures using the Stripe-Signature header. ## ShipStation Integration The ShipStation API is REST-based. Authentication uses API key and API secret in the Authorization header. Endpoints cover orders, shipments, carriers, and warehouses. Poll for new orders or use webhooks if available for your plan. Batch operations are supported for bulk label creation. ## Twilio SMS Integration Twilio's REST API requires Account SID and Auth Token. The Messaging API endpoint is /2010-04-01/Accounts/{AccountSid}/Messages.json. For two-way messaging, configure a webhook URL to receive incoming messages. Consider using a queue for high-volume outbound SMS to avoid rate limits. # PentaCodes Technical Reference and Integration Documentation # Version 1.0 | Last Updated March 2025 # This document contains technical reference material for common integrations and deployment procedures. ## QuickBooks Online Integration The QuickBooks Online API uses OAuth 2.0 for authentication. You will need to register your application in the Intuit Developer Portal to obtain client credentials. The base URL for the API is https://quickbooks.api.intuit.com/v3/company/{realmId}. Common endpoints include /invoice, /customer, /payment, and /bill. Rate limits apply: 500 requests per minute for production apps. Always implement exponential backoff for 429 responses. ## Stripe Payment Integration Stripe provides both client-side (Stripe.js) and server-side APIs. For PCI compliance, never pass raw card numbers through your server—use Stripe Elements or the Payment Intents API. Webhooks are essential for handling asynchronous events like payment succeeded or subscription renewed. Configure your webhook endpoint to verify signatures using the Stripe-Signature header. ## ShipStation Integration The ShipStation API is REST-based. Authentication uses API key and API secret in the Authorization header. Endpoints cover orders, shipments, carriers, and warehouses. Poll for new orders or use webhooks if available for your plan. Batch operations are supported for bulk label creation. ## Twilio SMS Integration Twilio's REST API requires Account SID and Auth Token. The Messaging API endpoint is /2010-04-01/Accounts/{AccountSid}/Messages.json. For two-way messaging, configure a webhook URL to receive incoming messages. Consider using a queue for high-volume outbound SMS to avoid rate limits. # PentaCodes Technical Reference and Integration Documentation # Version 1.0 | Last Updated March 2025 # This document contains technical reference material for common integrations and deployment procedures. ## QuickBooks Online Integration The QuickBooks Online API uses OAuth 2.0 for authentication. You will need to register your application in the Intuit Developer Portal to obtain client credentials. The base URL for the API is https://quickbooks.api.intuit.com/v3/company/{realmId}. Common endpoints include /invoice, /customer, /payment, and /bill. Rate limits apply: 500 requests per minute for production apps. Always implement exponential backoff for 429 responses. ## Stripe Payment Integration Stripe provides both client-side (Stripe.js) and server-side APIs. For PCI compliance, never pass raw card numbers through your server—use Stripe Elements or the Payment Intents API. Webhooks are essential for handling asynchronous events like payment succeeded or subscription renewed. Configure your webhook endpoint to verify signatures using the Stripe-Signature header. ## ShipStation Integration The ShipStation API is REST-based. Authentication uses API key and API secret in the Authorization header. Endpoints cover orders, shipments, carriers, and warehouses. Poll for new orders or use webhooks if available for your plan. Batch operations are supported for bulk label creation. ## Twilio SMS Integration Twilio's REST API requires Account SID and Auth Token. The Messaging API endpoint is /2010-04-01/Accounts/{AccountSid}/Messages.json. For two-way messaging, configure a webhook URL to receive incoming messages. Consider using a queue for high-volume outbound SMS to avoid rate limits. # PentaCodes Technical Reference and Integration Documentation # Version 1.0 | Last Updated March 2025 # This document contains technical reference material for common integrations and deployment procedures. ## QuickBooks Online Integration The QuickBooks Online API uses OAuth 2.0 for authentication. You will need to register your application in the Intuit Developer Portal to obtain client credentials. The base URL for the API is https://quickbooks.api.intuit.com/v3/company/{realmId}. Common endpoints include /invoice, /customer, /payment, and /bill. Rate limits apply: 500 requests per minute for production apps. Always implement exponential backoff for 429 responses. ## Stripe Payment Integration Stripe provides both client-side (Stripe.js) and server-side APIs. For PCI compliance, never pass raw card numbers through your server—use Stripe Elements or the Payment Intents API. Webhooks are essential for handling asynchronous events like payment succeeded or subscription renewed. Configure your webhook endpoint to verify signatures using the Stripe-Signature header. ## ShipStation Integration The ShipStation API is REST-based. Authentication uses API key and API secret in the Authorization header. Endpoints cover orders, shipments, carriers, and warehouses. Poll for new orders or use webhooks if available for your plan. Batch operations are supported for bulk label creation. ## Twilio SMS Integration Twilio's REST API requires Account SID and Auth Token. The Messaging API endpoint is /2010-04-01/Accounts/{AccountSid}/Messages.json. For two-way messaging, configure a webhook URL to receive incoming messages. Consider using a queue for high-volume outbound SMS to avoid rate limits. # PentaCodes Technical Reference and Integration Documentation # Version 1.0 | Last Updated March 2025 # This document contains technical reference material for common integrations and deployment procedures. ## QuickBooks Online Integration The QuickBooks Online API uses OAuth 2.0 for authentication. You will need to register your application in the Intuit Developer Portal to obtain client credentials. The base URL for the API is https://quickbooks.api.intuit.com/v3/company/{realmId}. Common endpoints include /invoice, /customer, /payment, and /bill. Rate limits apply: 500 requests per minute for production apps. Always implement exponential backoff for 429 responses. ## Stripe Payment Integration Stripe provides both client-side (Stripe.js) and server-side APIs. For PCI compliance, never pass raw card numbers through your server—use Stripe Elements or the Payment Intents API. Webhooks are essential for handling asynchronous events like payment succeeded or subscription renewed. Configure your webhook endpoint to verify signatures using the Stripe-Signature header. ## ShipStation Integration The ShipStation API is REST-based. Authentication uses API key and API secret in the Authorization header. Endpoints cover orders, shipments, carriers, and warehouses. Poll for new orders or use webhooks if available for your plan. Batch operations are supported for bulk label creation. ## Twilio SMS Integration Twilio's REST API requires Account SID and Auth Token. The Messaging API endpoint is /2010-04-01/Accounts/{AccountSid}/Messages.json. For two-way messaging, configure a webhook URL to receive incoming messages. Consider using a queue for high-volume outbound SMS to avoid rate limits. # PentaCodes Technical Reference and Integration Documentation # Version 1.0 | Last Updated March 2025 # This document contains technical reference material for common integrations and deployment procedures. ## QuickBooks Online Integration The QuickBooks Online API uses OAuth 2.0 for authentication. You will need to register your application in the Intuit Developer Portal to obtain client credentials. The base URL for the API is https://quickbooks.api.intuit.com/v3/company/{realmId}. Common endpoints include /invoice, /customer, /payment, and /bill. Rate limits apply: 500 requests per minute for production apps. Always implement exponential backoff for 429 responses. ## Stripe Payment Integration Stripe provides both client-side (Stripe.js) and server-side APIs. For PCI compliance, never pass raw card numbers through your server—use Stripe Elements or the Payment Intents API. Webhooks are essential for handling asynchronous events like payment succeeded or subscription renewed. Configure your webhook endpoint to verify signatures using the Stripe-Signature header. ## ShipStation Integration The ShipStation API is REST-based. Authentication uses API key and API secret in the Authorization header. Endpoints cover orders, shipments, carriers, and warehouses. Poll for new orders or use webhooks if available for your plan. Batch operations are supported for bulk label creation. ## Twilio SMS Integration Twilio's REST API requires Account SID and Auth Token. The Messaging API endpoint is /2010-04-01/Accounts/{AccountSid}/Messages.json. For two-way messaging, configure a webhook URL to receive incoming messages. Consider using a queue for high-volume outbound SMS to avoid rate limits. # PentaCodes Technical Reference and Integration Documentation # Version 1.0 | Last Updated March 2025 # This document contains technical reference material for common integrations and deployment procedures. ## QuickBooks Online Integration The QuickBooks Online API uses OAuth 2.0 for authentication. You will need to register your application in the Intuit Developer Portal to obtain client credentials. The base URL for the API is https://quickbooks.api.intuit.com/v3/company/{realmId}. Common endpoints include /invoice, /customer, /payment, and /bill. Rate limits apply: 500 requests per minute for production apps. Always implement exponential backoff for 429 responses. ## Stripe Payment Integration Stripe provides both client-side (Stripe.js) and server-side APIs. For PCI compliance, never pass raw card numbers through your server—use Stripe Elements or the Payment Intents API. Webhooks are essential for handling asynchronous events like payment succeeded or subscription renewed. Configure your webhook endpoint to verify signatures using the Stripe-Signature header. ## ShipStation Integration The ShipStation API is REST-based. Authentication uses API key and API secret in the Authorization header. Endpoints cover orders, shipments, carriers, and warehouses. Poll for new orders or use webhooks if available for your plan. Batch operations are supported for bulk label creation. ## Twilio SMS Integration Twilio's REST API requires Account SID and Auth Token. The Messaging API endpoint is /2010-04-01/Accounts/{AccountSid}/Messages.json. For two-way messaging, configure a webhook URL to receive incoming messages. Consider using a queue for high-volume outbound SMS to avoid rate limits. # PentaCodes Technical Reference and Integration Documentation # Version 1.0 | Last Updated March 2025 # This document contains technical reference material for common integrations and deployment procedures. ## QuickBooks Online Integration The QuickBooks Online API uses OAuth 2.0 for authentication. You will need to register your application in the Intuit Developer Portal to obtain client credentials. The base URL for the API is https://quickbooks.api.intuit.com/v3/company/{realmId}. Common endpoints include /invoice, /customer, /payment, and /bill. Rate limits apply: 500 requests per minute for production apps. Always implement exponential backoff for 429 responses. ## Stripe Payment Integration Stripe provides both client-side (Stripe.js) and server-side APIs. For PCI compliance, never pass raw card numbers through your server—use Stripe Elements or the Payment Intents API. Webhooks are essential for handling asynchronous events like payment succeeded or subscription renewed. Configure your webhook endpoint to verify signatures using the Stripe-Signature header. ## ShipStation Integration The ShipStation API is REST-based. Authentication uses API key and API secret in the Authorization header. Endpoints cover orders, shipments, carriers, and warehouses. Poll for new orders or use webhooks if available for your plan. Batch operations are supported for bulk label creation. ## Twilio SMS Integration Twilio's REST API requires Account SID and Auth Token. The Messaging API endpoint is /2010-04-01/Accounts/{AccountSid}/Messages.json. For two-way messaging, configure a webhook URL to receive incoming messages. Consider using a queue for high-volume outbound SMS to avoid rate limits. # PentaCodes Technical Reference and Integration Documentation # Version 1.0 | Last Updated March 2025 # This document contains technical reference material for common integrations and deployment procedures. ## QuickBooks Online Integration The QuickBooks Online API uses OAuth 2.0 for authentication. You will need to register your application in the Intuit Developer Portal to obtain client credentials. The base URL for the API is https://quickbooks.api.intuit.com/v3/company/{realmId}. Common endpoints include /invoice, /customer, /payment, and /bill. Rate limits apply: 500 requests per minute for production apps. Always implement exponential backoff for 429 responses. ## Stripe Payment Integration Stripe provides both client-side (Stripe.js) and server-side APIs. For PCI compliance, never pass raw card numbers through your server—use Stripe Elements or the Payment Intents API. Webhooks are essential for handling asynchronous events like payment succeeded or subscription renewed. Configure your webhook endpoint to verify signatures using the Stripe-Signature header. ## ShipStation Integration The ShipStation API is REST-based. Authentication uses API key and API secret in the Authorization header. Endpoints cover orders, shipments, carriers, and warehouses. Poll for new orders or use webhooks if available for your plan. Batch operations are supported for bulk label creation. ## Twilio SMS Integration Twilio's REST API requires Account SID and Auth Token. The Messaging API endpoint is /2010-04-01/Accounts/{AccountSid}/Messages.json. For two-way messaging, configure a webhook URL to receive incoming messages. Consider using a queue for high-volume outbound SMS to avoid rate limits. # PentaCodes Technical Reference and Integration Documentation # Version 1.0 | Last Updated March 2025 # This document contains technical reference material for common integrations and deployment procedures. ## QuickBooks Online Integration The QuickBooks Online API uses OAuth 2.0 for authentication. You will need to register your application in the Intuit Developer Portal to obtain client credentials. The base URL for the API is https://quickbooks.api.intuit.com/v3/company/{realmId}. Common endpoints include /invoice, /customer, /payment, and /bill. Rate limits apply: 500 requests per minute for production apps. Always implement exponential backoff for 429 responses. ## Stripe Payment Integration Stripe provides both client-side (Stripe.js) and server-side APIs. For PCI compliance, never pass raw card numbers through your server—use Stripe Elements or the Payment Intents API. Webhooks are essential for handling asynchronous events like payment succeeded or subscription renewed. Configure your webhook endpoint to verify signatures using the Stripe-Signature header. ## ShipStation Integration The ShipStation API is REST-based. Authentication uses API key and API secret in the Authorization header. Endpoints cover orders, shipments, carriers, and warehouses. Poll for new orders or use webhooks if available for your plan. Batch operations are supported for bulk label creation. ## Twilio SMS Integration Twilio's REST API requires Account SID and Auth Token. The Messaging API endpoint is /2010-04-01/Accounts/{AccountSid}/Messages.json. For two-way messaging, configure a webhook URL to receive incoming messages. Consider using a queue for high-volume outbound SMS to avoid rate limits. # PentaCodes Technical Reference and Integration Documentation # Version 1.0 | Last Updated March 2025 # This document contains technical reference material for common integrations and deployment procedures. ## QuickBooks Online Integration The QuickBooks Online API uses OAuth 2.0 for authentication. You will need to register your application in the Intuit Developer Portal to obtain client credentials. The base URL for the API is https://quickbooks.api.intuit.com/v3/company/{realmId}. Common endpoints include /invoice, /customer, /payment, and /bill. Rate limits apply: 500 requests per minute for production apps. Always implement exponential backoff for 429 responses. ## Stripe Payment Integration Stripe provides both client-side (Stripe.js) and server-side APIs. For PCI compliance, never pass raw card numbers through your server—use Stripe Elements or the Payment Intents API. Webhooks are essential for handling asynchronous events like payment succeeded or subscription renewed. Configure your webhook endpoint to verify signatures using the Stripe-Signature header. ## ShipStation Integration The ShipStation API is REST-based. Authentication uses API key and API secret in the Authorization header. Endpoints cover orders, shipments, carriers, and warehouses. Poll for new orders or use webhooks if available for your plan. Batch operations are supported for bulk label creation. ## Twilio SMS Integration Twilio's REST API requires Account SID and Auth Token. The Messaging API endpoint is /2010-04-01/Accounts/{AccountSid}/Messages.json. For two-way messaging, configure a webhook URL to receive incoming messages. Consider using a queue for high-volume outbound SMS to avoid rate limits. # PentaCodes Technical Reference and Integration Documentation # Version 1.0 | Last Updated March 2025 # This document contains technical reference material for common integrations and deployment procedures. ## QuickBooks Online Integration The QuickBooks Online API uses OAuth 2.0 for authentication. You will need to register your application in the Intuit Developer Portal to obtain client credentials. The base URL for the API is https://quickbooks.api.intuit.com/v3/company/{realmId}. Common endpoints include /invoice, /customer, /payment, and /bill. Rate limits apply: 500 requests per minute for production apps. Always implement exponential backoff for 429 responses. ## Stripe Payment Integration Stripe provides both client-side (Stripe.js) and server-side APIs. For PCI compliance, never pass raw card numbers through your server—use Stripe Elements or the Payment Intents API. Webhooks are essential for handling asynchronous events like payment succeeded or subscription renewed. Configure your webhook endpoint to verify signatures using the Stripe-Signature header. ## ShipStation Integration The ShipStation API is REST-based. Authentication uses API key and API secret in the Authorization header. Endpoints cover orders, shipments, carriers, and warehouses. Poll for new orders or use webhooks if available for your plan. Batch operations are supported for bulk label creation. ## Twilio SMS Integration Twilio's REST API requires Account SID and Auth Token. The Messaging API endpoint is /2010-04-01/Accounts/{AccountSid}/Messages.json. For two-way messaging, configure a webhook URL to receive incoming messages. Consider using a queue for high-volume outbound SMS to avoid rate limits. # PentaCodes Technical Reference and Integration Documentation # Version 1.0 | Last Updated March 2025 # This document contains technical reference material for common integrations and deployment procedures. ## QuickBooks Online Integration The QuickBooks Online API uses OAuth 2.0 for authentication. You will need to register your application in the Intuit Developer Portal to obtain client credentials. The base URL for the API is https://quickbooks.api.intuit.com/v3/company/{realmId}. Common endpoints include /invoice, /customer, /payment, and /bill. Rate limits apply: 500 requests per minute for production apps. Always implement exponential backoff for 429 responses. ## Stripe Payment Integration Stripe provides both client-side (Stripe.js) and server-side APIs. For PCI compliance, never pass raw card numbers through your server—use Stripe Elements or the Payment Intents API. Webhooks are essential for handling asynchronous events like payment succeeded or subscription renewed. Configure your webhook endpoint to verify signatures using the Stripe-Signature header. ## ShipStation Integration The ShipStation API is REST-based. Authentication uses API key and API secret in the Authorization header. Endpoints cover orders, shipments, carriers, and warehouses. Poll for new orders or use webhooks if available for your plan. Batch operations are supported for bulk label creation. ## Twilio SMS Integration Twilio's REST API requires Account SID and Auth Token. The Messaging API endpoint is /2010-04-01/Accounts/{AccountSid}/Messages.json. For two-way messaging, configure a webhook URL to receive incoming messages. Consider using a queue for high-volume outbound SMS to avoid rate limits. # PentaCodes Technical Reference and Integration Documentation # Version 1.0 | Last Updated March 2025 # This document contains technical reference material for common integrations and deployment procedures. ## QuickBooks Online Integration The QuickBooks Online API uses OAuth 2.0 for authentication. You will need to register your application in the Intuit Developer Portal to obtain client credentials. The base URL for the API is https://quickbooks.api.intuit.com/v3/company/{realmId}. Common endpoints include /invoice, /customer, /payment, and /bill. Rate limits apply: 500 requests per minute for production apps. Always implement exponential backoff for 429 responses. ## Stripe Payment Integration Stripe provides both client-side (Stripe.js) and server-side APIs. For PCI compliance, never pass raw card numbers through your server—use Stripe Elements or the Payment Intents API. Webhooks are essential for handling asynchronous events like payment succeeded or subscription renewed. Configure your webhook endpoint to verify signatures using the Stripe-Signature header. ## ShipStation Integration The ShipStation API is REST-based. Authentication uses API key and API secret in the Authorization header. Endpoints cover orders, shipments, carriers, and warehouses. Poll for new orders or use webhooks if available for your plan. Batch operations are supported for bulk label creation. ## Twilio SMS Integration Twilio's REST API requires Account SID and Auth Token. The Messaging API endpoint is /2010-04-01/Accounts/{AccountSid}/Messages.json. For two-way messaging, configure a webhook URL to receive incoming messages. Consider using a queue for high-volume outbound SMS to avoid rate limits. # PentaCodes Technical Reference and Integration Documentation # Version 1.0 | Last Updated March 2025 # This document contains technical reference material for common integrations and deployment procedures. ## QuickBooks Online Integration The QuickBooks Online API uses OAuth 2.0 for authentication. You will need to register your application in the Intuit Developer Portal to obtain client credentials. The base URL for the API is https://quickbooks.api.intuit.com/v3/company/{realmId}. Common endpoints include /invoice, /customer, /payment, and /bill. Rate limits apply: 500 requests per minute for production apps. Always implement exponential backoff for 429 responses. ## Stripe Payment Integration Stripe provides both client-side (Stripe.js) and server-side APIs. For PCI compliance, never pass raw card numbers through your server—use Stripe Elements or the Payment Intents API. Webhooks are essential for handling asynchronous events like payment succeeded or subscription renewed. Configure your webhook endpoint to verify signatures using the Stripe-Signature header. ## ShipStation Integration The ShipStation API is REST-based. Authentication uses API key and API secret in the Authorization header. Endpoints cover orders, shipments, carriers, and warehouses. Poll for new orders or use webhooks if available for your plan. Batch operations are supported for bulk label creation. ## Twilio SMS Integration Twilio's REST API requires Account SID and Auth Token. The Messaging API endpoint is /2010-04-01/Accounts/{AccountSid}/Messages.json. For two-way messaging, configure a webhook URL to receive incoming messages. Consider using a queue for high-volume outbound SMS to avoid rate limits. # PentaCodes Technical Reference and Integration Documentation # Version 1.0 | Last Updated March 2025 # This document contains technical reference material for common integrations and deployment procedures. ## QuickBooks Online Integration The QuickBooks Online API uses OAuth 2.0 for authentication. You will need to register your application in the Intuit Developer Portal to obtain client credentials. The base URL for the API is https://quickbooks.api.intuit.com/v3/company/{realmId}. Common endpoints include /invoice, /customer, /payment, and /bill. Rate limits apply: 500 requests per minute for production apps. Always implement exponential backoff for 429 responses. ## Stripe Payment Integration Stripe provides both client-side (Stripe.js) and server-side APIs. For PCI compliance, never pass raw card numbers through your server—use Stripe Elements or the Payment Intents API. Webhooks are essential for handling asynchronous events like payment succeeded or subscription renewed. Configure your webhook endpoint to verify signatures using the Stripe-Signature header. ## ShipStation Integration The ShipStation API is REST-based. Authentication uses API key and API secret in the Authorization header. Endpoints cover orders, shipments, carriers, and warehouses. Poll for new orders or use webhooks if available for your plan. Batch operations are supported for bulk label creation. ## Twilio SMS Integration Twilio's REST API requires Account SID and Auth Token. The Messaging API endpoint is /2010-04-01/Accounts/{AccountSid}/Messages.json. For two-way messaging, configure a webhook URL to receive incoming messages. Consider using a queue for high-volume outbound SMS to avoid rate limits. # PentaCodes Technical Reference and Integration Documentation # Version 1.0 | Last Updated March 2025 # This document contains technical reference material for common integrations and deployment procedures. ## QuickBooks Online Integration The QuickBooks Online API uses OAuth 2.0 for authentication. You will need to register your application in the Intuit Developer Portal to obtain client credentials. The base URL for the API is https://quickbooks.api.intuit.com/v3/company/{realmId}. Common endpoints include /invoice, /customer, /payment, and /bill. Rate limits apply: 500 requests per minute for production apps. Always implement exponential backoff for 429 responses. ## Stripe Payment Integration Stripe provides both client-side (Stripe.js) and server-side APIs. For PCI compliance, never pass raw card numbers through your server—use Stripe Elements or the Payment Intents API. Webhooks are essential for handling asynchronous events like payment succeeded or subscription renewed. Configure your webhook endpoint to verify signatures using the Stripe-Signature header. ## ShipStation Integration The ShipStation API is REST-based. Authentication uses API key and API secret in the Authorization header. Endpoints cover orders, shipments, carriers, and warehouses. Poll for new orders or use webhooks if available for your plan. Batch operations are supported for bulk label creation. ## Twilio SMS Integration Twilio's REST API requires Account SID and Auth Token. The Messaging API endpoint is /2010-04-01/Accounts/{AccountSid}/Messages.json. For two-way messaging, configure a webhook URL to receive incoming messages. Consider using a queue for high-volume outbound SMS to avoid rate limits. # PentaCodes Technical Reference and Integration Documentation # Version 1.0 | Last Updated March 2025 # This document contains technical reference material for common integrations and deployment procedures. ## QuickBooks Online Integration The QuickBooks Online API uses OAuth 2.0 for authentication. You will need to register your application in the Intuit Developer Portal to obtain client credentials. The base URL for the API is https://quickbooks.api.intuit.com/v3/company/{realmId}. Common endpoints include /invoice, /customer, /payment, and /bill. Rate limits apply: 500 requests per minute for production apps. Always implement exponential backoff for 429 responses. ## Stripe Payment Integration Stripe provides both client-side (Stripe.js) and server-side APIs. For PCI compliance, never pass raw card numbers through your server—use Stripe Elements or the Payment Intents API. Webhooks are essential for handling asynchronous events like payment succeeded or subscription renewed. Configure your webhook endpoint to verify signatures using the Stripe-Signature header. ## ShipStation Integration The ShipStation API is REST-based. Authentication uses API key and API secret in the Authorization header. Endpoints cover orders, shipments, carriers, and warehouses. Poll for new orders or use webhooks if available for your plan. Batch operations are supported for bulk label creation. ## Twilio SMS Integration Twilio's REST API requires Account SID and Auth Token. The Messaging API endpoint is /2010-04-01/Accounts/{AccountSid}/Messages.json. For two-way messaging, configure a webhook URL to receive incoming messages. Consider using a queue for high-volume outbound SMS to avoid rate limits. # PentaCodes Technical Reference and Integration Documentation # Version 1.0 | Last Updated March 2025 # This document contains technical reference material for common integrations and deployment procedures. ## QuickBooks Online Integration The QuickBooks Online API uses OAuth 2.0 for authentication. You will need to register your application in the Intuit Developer Portal to obtain client credentials. The base URL for the API is https://quickbooks.api.intuit.com/v3/company/{realmId}. Common endpoints include /invoice, /customer, /payment, and /bill. Rate limits apply: 500 requests per minute for production apps. Always implement exponential backoff for 429 responses. ## Stripe Payment Integration Stripe provides both client-side (Stripe.js) and server-side APIs. For PCI compliance, never pass raw card numbers through your server—use Stripe Elements or the Payment Intents API. Webhooks are essential for handling asynchronous events like payment succeeded or subscription renewed. Configure your webhook endpoint to verify signatures using the Stripe-Signature header. ## ShipStation Integration The ShipStation API is REST-based. Authentication uses API key and API secret in the Authorization header. Endpoints cover orders, shipments, carriers, and warehouses. Poll for new orders or use webhooks if available for your plan. Batch operations are supported for bulk label creation. ## Twilio SMS Integration Twilio's REST API requires Account SID and Auth Token. The Messaging API endpoint is /2010-04-01/Accounts/{AccountSid}/Messages.json. For two-way messaging, configure a webhook URL to receive incoming messages. Consider using a queue for high-volume outbound SMS to avoid rate limits. # PentaCodes Technical Reference and Integration Documentation # Version 1.0 | Last Updated March 2025 # This document contains technical reference material for common integrations and deployment procedures. ## QuickBooks Online Integration The QuickBooks Online API uses OAuth 2.0 for authentication. You will need to register your application in the Intuit Developer Portal to obtain client credentials. The base URL for the API is https://quickbooks.api.intuit.com/v3/company/{realmId}. Common endpoints include /invoice, /customer, /payment, and /bill. Rate limits apply: 500 requests per minute for production apps. Always implement exponential backoff for 429 responses. ## Stripe Payment Integration Stripe provides both client-side (Stripe.js) and server-side APIs. For PCI compliance, never pass raw card numbers through your server—use Stripe Elements or the Payment Intents API. Webhooks are essential for handling asynchronous events like payment succeeded or subscription renewed. Configure your webhook endpoint to verify signatures using the Stripe-Signature header. ## ShipStation Integration The ShipStation API is REST-based. Authentication uses API key and API secret in the Authorization header. Endpoints cover orders, shipments, carriers, and warehouses. Poll for new orders or use webhooks if available for your plan. Batch operations are supported for bulk label creation. ## Twilio SMS Integration Twilio's REST API requires Account SID and Auth Token. The Messaging API endpoint is /2010-04-01/Accounts/{AccountSid}/Messages.json. For two-way messaging, configure a webhook URL to receive incoming messages. Consider using a queue for high-volume outbound SMS to avoid rate limits. # PentaCodes Technical Reference and Integration Documentation # Version 1.0 | Last Updated March 2025 # This document contains technical reference material for common integrations and deployment procedures. ## QuickBooks Online Integration The QuickBooks Online API uses OAuth 2.0 for authentication. You will need to register your application in the Intuit Developer Portal to obtain client credentials. The base URL for the API is https://quickbooks.api.intuit.com/v3/company/{realmId}. Common endpoints include /invoice, /customer, /payment, and /bill. Rate limits apply: 500 requests per minute for production apps. Always implement exponential backoff for 429 responses. ## Stripe Payment Integration Stripe provides both client-side (Stripe.js) and server-side APIs. For PCI compliance, never pass raw card numbers through your server—use Stripe Elements or the Payment Intents API. Webhooks are essential for handling asynchronous events like payment succeeded or subscription renewed. Configure your webhook endpoint to verify signatures using the Stripe-Signature header. ## ShipStation Integration The ShipStation API is REST-based. Authentication uses API key and API secret in the Authorization header. Endpoints cover orders, shipments, carriers, and warehouses. Poll for new orders or use webhooks if available for your plan. Batch operations are supported for bulk label creation. ## Twilio SMS Integration Twilio's REST API requires Account SID and Auth Token. The Messaging API endpoint is /2010-04-01/Accounts/{AccountSid}/Messages.json. For two-way messaging, configure a webhook URL to receive incoming messages. Consider using a queue for high-volume outbound SMS to avoid rate limits. # PentaCodes Technical Reference and Integration Documentation # Version 1.0 | Last Updated March 2025 # This document contains technical reference material for common integrations and deployment procedures. ## QuickBooks Online Integration The QuickBooks Online API uses OAuth 2.0 for authentication. You will need to register your application in the Intuit Developer Portal to obtain client credentials. The base URL for the API is https://quickbooks.api.intuit.com/v3/company/{realmId}. Common endpoints include /invoice, /customer, /payment, and /bill. Rate limits apply: 500 requests per minute for production apps. Always implement exponential backoff for 429 responses. ## Stripe Payment Integration Stripe provides both client-side (Stripe.js) and server-side APIs. For PCI compliance, never pass raw card numbers through your server—use Stripe Elements or the Payment Intents API. Webhooks are essential for handling asynchronous events like payment succeeded or subscription renewed. Configure your webhook endpoint to verify signatures using the Stripe-Signature header. ## ShipStation Integration The ShipStation API is REST-based. Authentication uses API key and API secret in the Authorization header. Endpoints cover orders, shipments, carriers, and warehouses. Poll for new orders or use webhooks if available for your plan. Batch operations are supported for bulk label creation. ## Twilio SMS Integration Twilio's REST API requires Account SID and Auth Token. The Messaging API endpoint is /2010-04-01/Accounts/{AccountSid}/Messages.json. For two-way messaging, configure a webhook URL to receive incoming messages. Consider using a queue for high-volume outbound SMS to avoid rate limits. # PentaCodes Technical Reference and Integration Documentation # Version 1.0 | Last Updated March 2025 # This document contains technical reference material for common integrations and deployment procedures. ## QuickBooks Online Integration The QuickBooks Online API uses OAuth 2.0 for authentication. You will need to register your application in the Intuit Developer Portal to obtain client credentials. The base URL for the API is https://quickbooks.api.intuit.com/v3/company/{realmId}. Common endpoints include /invoice, /customer, /payment, and /bill. Rate limits apply: 500 requests per minute for production apps. Always implement exponential backoff for 429 responses. ## Stripe Payment Integration Stripe provides both client-side (Stripe.js) and server-side APIs. For PCI compliance, never pass raw card numbers through your server—use Stripe Elements or the Payment Intents API. Webhooks are essential for handling asynchronous events like payment succeeded or subscription renewed. Configure your webhook endpoint to verify signatures using the Stripe-Signature header. ## ShipStation Integration The ShipStation API is REST-based. Authentication uses API key and API secret in the Authorization header. Endpoints cover orders, shipments, carriers, and warehouses. Poll for new orders or use webhooks if available for your plan. Batch operations are supported for bulk label creation. ## Twilio SMS Integration Twilio's REST API requires Account SID and Auth Token. The Messaging API endpoint is /2010-04-01/Accounts/{AccountSid}/Messages.json. For two-way messaging, configure a webhook URL to receive incoming messages. Consider using a queue for high-volume outbound SMS to avoid rate limits. # PentaCodes Technical Reference and Integration Documentation # Version 1.0 | Last Updated March 2025 # This document contains technical reference material for common integrations and deployment procedures. ## QuickBooks Online Integration The QuickBooks Online API uses OAuth 2.0 for authentication. You will need to register your application in the Intuit Developer Portal to obtain client credentials. The base URL for the API is https://quickbooks.api.intuit.com/v3/company/{realmId}. Common endpoints include /invoice, /customer, /payment, and /bill. Rate limits apply: 500 requests per minute for production apps. Always implement exponential backoff for 429 responses. ## Stripe Payment Integration Stripe provides both client-side (Stripe.js) and server-side APIs. For PCI compliance, never pass raw card numbers through your server—use Stripe Elements or the Payment Intents API. Webhooks are essential for handling asynchronous events like payment succeeded or subscription renewed. Configure your webhook endpoint to verify signatures using the Stripe-Signature header. ## ShipStation Integration The ShipStation API is REST-based. Authentication uses API key and API secret in the Authorization header. Endpoints cover orders, shipments, carriers, and warehouses. Poll for new orders or use webhooks if available for your plan. Batch operations are supported for bulk label creation. ## Twilio SMS Integration Twilio's REST API requires Account SID and Auth Token. The Messaging API endpoint is /2010-04-01/Accounts/{AccountSid}/Messages.json. For two-way messaging, configure a webhook URL to receive incoming messages. Consider using a queue for high-volume outbound SMS to avoid rate limits. # PentaCodes Technical Reference and Integration Documentation # Version 1.0 | Last Updated March 2025 # This document contains technical reference material for common integrations and deployment procedures. ## QuickBooks Online Integration The QuickBooks Online API uses OAuth 2.0 for authentication. You will need to register your application in the Intuit Developer Portal to obtain client credentials. The base URL for the API is https://quickbooks.api.intuit.com/v3/company/{realmId}. Common endpoints include /invoice, /customer, /payment, and /bill. Rate limits apply: 500 requests per minute for production apps. Always implement exponential backoff for 429 responses. ## Stripe Payment Integration Stripe provides both client-side (Stripe.js) and server-side APIs. For PCI compliance, never pass raw card numbers through your server—use Stripe Elements or the Payment Intents API. Webhooks are essential for handling asynchronous events like payment succeeded or subscription renewed. Configure your webhook endpoint to verify signatures using the Stripe-Signature header. ## ShipStation Integration The ShipStation API is REST-based. Authentication uses API key and API secret in the Authorization header. Endpoints cover orders, shipments, carriers, and warehouses. Poll for new orders or use webhooks if available for your plan. Batch operations are supported for bulk label creation. ## Twilio SMS Integration Twilio's REST API requires Account SID and Auth Token. The Messaging API endpoint is /2010-04-01/Accounts/{AccountSid}/Messages.json. For two-way messaging, configure a webhook URL to receive incoming messages. Consider using a queue for high-volume outbound SMS to avoid rate limits. # PentaCodes Technical Reference and Integration Documentation # Version 1.0 | Last Updated March 2025 # This document contains technical reference material for common integrations and deployment procedures. ## QuickBooks Online Integration The QuickBooks Online API uses OAuth 2.0 for authentication. You will need to register your application in the Intuit Developer Portal to obtain client credentials. The base URL for the API is https://quickbooks.api.intuit.com/v3/company/{realmId}. Common endpoints include /invoice, /customer, /payment, and /bill. Rate limits apply: 500 requests per minute for production apps. Always implement exponential backoff for 429 responses. ## Stripe Payment Integration Stripe provides both client-side (Stripe.js) and server-side APIs. For PCI compliance, never pass raw card numbers through your server—use Stripe Elements or the Payment Intents API. Webhooks are essential for handling asynchronous events like payment succeeded or subscription renewed. Configure your webhook endpoint to verify signatures using the Stripe-Signature header. ## ShipStation Integration The ShipStation API is REST-based. Authentication uses API key and API secret in the Authorization header. Endpoints cover orders, shipments, carriers, and warehouses. Poll for new orders or use webhooks if available for your plan. Batch operations are supported for bulk label creation. ## Twilio SMS Integration Twilio's REST API requires Account SID and Auth Token. The Messaging API endpoint is /2010-04-01/Accounts/{AccountSid}/Messages.json. For two-way messaging, configure a webhook URL to receive incoming messages. Consider using a queue for high-volume outbound SMS to avoid rate limits. # PentaCodes Technical Reference and Integration Documentation # Version 1.0 | Last Updated March 2025 # This document contains technical reference material for common integrations and deployment procedures. ## QuickBooks Online Integration The QuickBooks Online API uses OAuth 2.0 for authentication. You will need to register your application in the Intuit Developer Portal to obtain client credentials. The base URL for the API is https://quickbooks.api.intuit.com/v3/company/{realmId}. Common endpoints include /invoice, /customer, /payment, and /bill. Rate limits apply: 500 requests per minute for production apps. Always implement exponential backoff for 429 responses. ## Stripe Payment Integration Stripe provides both client-side (Stripe.js) and server-side APIs. For PCI compliance, never pass raw card numbers through your server—use Stripe Elements or the Payment Intents API. Webhooks are essential for handling asynchronous events like payment succeeded or subscription renewed. Configure your webhook endpoint to verify signatures using the Stripe-Signature header. ## ShipStation Integration The ShipStation API is REST-based. Authentication uses API key and API secret in the Authorization header. Endpoints cover orders, shipments, carriers, and warehouses. Poll for new orders or use webhooks if available for your plan. Batch operations are supported for bulk label creation. ## Twilio SMS Integration Twilio's REST API requires Account SID and Auth Token. The Messaging API endpoint is /2010-04-01/Accounts/{AccountSid}/Messages.json. For two-way messaging, configure a webhook URL to receive incoming messages. Consider using a queue for high-volume outbound SMS to avoid rate limits. # PentaCodes Technical Reference and Integration Documentation # Version 1.0 | Last Updated March 2025 # This document contains technical reference material for common integrations and deployment procedures. ## QuickBooks Online Integration The QuickBooks Online API uses OAuth 2.0 for authentication. You will need to register your application in the Intuit Developer Portal to obtain client credentials. The base URL for the API is https://quickbooks.api.intuit.com/v3/company/{realmId}. Common endpoints include /invoice, /customer, /payment, and /bill. Rate limits apply: 500 requests per minute for production apps. Always implement exponential backoff for 429 responses. ## Stripe Payment Integration Stripe provides both client-side (Stripe.js) and server-side APIs. For PCI compliance, never pass raw card numbers through your server—use Stripe Elements or the Payment Intents API. Webhooks are essential for handling asynchronous events like payment succeeded or subscription renewed. Configure your webhook endpoint to verify signatures using the Stripe-Signature header. ## ShipStation Integration The ShipStation API is REST-based. Authentication uses API key and API secret in the Authorization header. Endpoints cover orders, shipments, carriers, and warehouses. Poll for new orders or use webhooks if available for your plan. Batch operations are supported for bulk label creation. ## Twilio SMS Integration Twilio's REST API requires Account SID and Auth Token. The Messaging API endpoint is /2010-04-01/Accounts/{AccountSid}/Messages.json. For two-way messaging, configure a webhook URL to receive incoming messages. Consider using a queue for high-volume outbound SMS to avoid rate limits. # PentaCodes Technical Reference and Integration Documentation # Version 1.0 | Last Updated March 2025 # This document contains technical reference material for common integrations and deployment procedures. ## QuickBooks Online Integration The QuickBooks Online API uses OAuth 2.0 for authentication. You will need to register your application in the Intuit Developer Portal to obtain client credentials. The base URL for the API is https://quickbooks.api.intuit.com/v3/company/{realmId}. Common endpoints include /invoice, /customer, /payment, and /bill. Rate limits apply: 500 requests per minute for production apps. Always implement exponential backoff for 429 responses. ## Stripe Payment Integration Stripe provides both client-side (Stripe.js) and server-side APIs. For PCI compliance, never pass raw card numbers through your server—use Stripe Elements or the Payment Intents API. Webhooks are essential for handling asynchronous events like payment succeeded or subscription renewed. Configure your webhook endpoint to verify signatures using the Stripe-Signature header. ## ShipStation Integration The ShipStation API is REST-based. Authentication uses API key and API secret in the Authorization header. Endpoints cover orders, shipments, carriers, and warehouses. Poll for new orders or use webhooks if available for your plan. Batch operations are supported for bulk label creation. ## Twilio SMS Integration Twilio's REST API requires Account SID and Auth Token. The Messaging API endpoint is /2010-04-01/Accounts/{AccountSid}/Messages.json. For two-way messaging, configure a webhook URL to receive incoming messages. Consider using a queue for high-volume outbound SMS to avoid rate limits. # PentaCodes Technical Reference and Integration Documentation # Version 1.0 | Last Updated March 2025 # This document contains technical reference material for common integrations and deployment procedures. ## QuickBooks Online Integration The QuickBooks Online API uses OAuth 2.0 for authentication. You will need to register your application in the Intuit Developer Portal to obtain client credentials. The base URL for the API is https://quickbooks.api.intuit.com/v3/company/{realmId}. Common endpoints include /invoice, /customer, /payment, and /bill. Rate limits apply: 500 requests per minute for production apps. Always implement exponential backoff for 429 responses. ## Stripe Payment Integration Stripe provides both client-side (Stripe.js) and server-side APIs. For PCI compliance, never pass raw card numbers through your server—use Stripe Elements or the Payment Intents API. Webhooks are essential for handling asynchronous events like payment succeeded or subscription renewed. Configure your webhook endpoint to verify signatures using the Stripe-Signature header. ## ShipStation Integration The ShipStation API is REST-based. Authentication uses API key and API secret in the Authorization header. Endpoints cover orders, shipments, carriers, and warehouses. Poll for new orders or use webhooks if available for your plan. Batch operations are supported for bulk label creation. ## Twilio SMS Integration Twilio's REST API requires Account SID and Auth Token. The Messaging API endpoint is /2010-04-01/Accounts/{AccountSid}/Messages.json. For two-way messaging, configure a webhook URL to receive incoming messages. Consider using a queue for high-volume outbound SMS to avoid rate limits. # PentaCodes Technical Reference and Integration Documentation # Version 1.0 | Last Updated March 2025 # This document contains technical reference material for common integrations and deployment procedures. ## QuickBooks Online Integration The QuickBooks Online API uses OAuth 2.0 for authentication. You will need to register your application in the Intuit Developer Portal to obtain client credentials. The base URL for the API is https://quickbooks.api.intuit.com/v3/company/{realmId}. Common endpoints include /invoice, /customer, /payment, and /bill. Rate limits apply: 500 requests per minute for production apps. Always implement exponential backoff for 429 responses. ## Stripe Payment Integration Stripe provides both client-side (Stripe.js) and server-side APIs. For PCI compliance, never pass raw card numbers through your server—use Stripe Elements or the Payment Intents API. Webhooks are essential for handling asynchronous events like payment succeeded or subscription renewed. Configure your webhook endpoint to verify signatures using the Stripe-Signature header. ## ShipStation Integration The ShipStation API is REST-based. Authentication uses API key and API secret in the Authorization header. Endpoints cover orders, shipments, carriers, and warehouses. Poll for new orders or use webhooks if available for your plan. Batch operations are supported for bulk label creation. ## Twilio SMS Integration Twilio's REST API requires Account SID and Auth Token. The Messaging API endpoint is /2010-04-01/Accounts/{AccountSid}/Messages.json. For two-way messaging, configure a webhook URL to receive incoming messages. Consider using a queue for high-volume outbound SMS to avoid rate limits. # PentaCodes Technical Reference and Integration Documentation # Version 1.0 | Last Updated March 2025 # This document contains technical reference material for common integrations and deployment procedures. ## QuickBooks Online Integration The QuickBooks Online API uses OAuth 2.0 for authentication. You will need to register your application in the Intuit Developer Portal to obtain client credentials. The base URL for the API is https://quickbooks.api.intuit.com/v3/company/{realmId}. Common endpoints include /invoice, /customer, /payment, and /bill. Rate limits apply: 500 requests per minute for production apps. Always implement exponential backoff for 429 responses. ## Stripe Payment Integration Stripe provides both client-side (Stripe.js) and server-side APIs. For PCI compliance, never pass raw card numbers through your server—use Stripe Elements or the Payment Intents API. Webhooks are essential for handling asynchronous events like payment succeeded or subscription renewed. Configure your webhook endpoint to verify signatures using the Stripe-Signature header. ## ShipStation Integration The ShipStation API is REST-based. Authentication uses API key and API secret in the Authorization header. Endpoints cover orders, shipments, carriers, and warehouses. Poll for new orders or use webhooks if available for your plan. Batch operations are supported for bulk label creation. ## Twilio SMS Integration Twilio's REST API requires Account SID and Auth Token. The Messaging API endpoint is /2010-04-01/Accounts/{AccountSid}/Messages.json. For two-way messaging, configure a webhook URL to receive incoming messages. Consider using a queue for high-volume outbound SMS to avoid rate limits. # PentaCodes Technical Reference and Integration Documentation # Version 1.0 | Last Updated March 2025 # This document contains technical reference material for common integrations and deployment procedures. ## QuickBooks Online Integration The QuickBooks Online API uses OAuth 2.0 for authentication. You will need to register your application in the Intuit Developer Portal to obtain client credentials. The base URL for the API is https://quickbooks.api.intuit.com/v3/company/{realmId}. Common endpoints include /invoice, /customer, /payment, and /bill. Rate limits apply: 500 requests per minute for production apps. Always implement exponential backoff for 429 responses. ## Stripe Payment Integration Stripe provides both client-side (Stripe.js) and server-side APIs. For PCI compliance, never pass raw card numbers through your server—use Stripe Elements or the Payment Intents API. Webhooks are essential for handling asynchronous events like payment succeeded or subscription renewed. Configure your webhook endpoint to verify signatures using the Stripe-Signature header. ## ShipStation Integration The ShipStation API is REST-based. Authentication uses API key and API secret in the Authorization header. Endpoints cover orders, shipments, carriers, and warehouses. Poll for new orders or use webhooks if available for your plan. Batch operations are supported for bulk label creation. ## Twilio SMS Integration Twilio's REST API requires Account SID and Auth Token. The Messaging API endpoint is /2010-04-01/Accounts/{AccountSid}/Messages.json. For two-way messaging, configure a webhook URL to receive incoming messages. Consider using a queue for high-volume outbound SMS to avoid rate limits. # PentaCodes Technical Reference and Integration Documentation # Version 1.0 | Last Updated March 2025 # This document contains technical reference material for common integrations and deployment procedures. ## QuickBooks Online Integration The QuickBooks Online API uses OAuth 2.0 for authentication. You will need to register your application in the Intuit Developer Portal to obtain client credentials. The base URL for the API is https://quickbooks.api.intuit.com/v3/company/{realmId}. Common endpoints include /invoice, /customer, /payment, and /bill. Rate limits apply: 500 requests per minute for production apps. Always implement exponential backoff for 429 responses. ## Stripe Payment Integration Stripe provides both client-side (Stripe.js) and server-side APIs. For PCI compliance, never pass raw card numbers through your server—use Stripe Elements or the Payment Intents API. Webhooks are essential for handling asynchronous events like payment succeeded or subscription renewed. Configure your webhook endpoint to verify signatures using the Stripe-Signature header. ## ShipStation Integration The ShipStation API is REST-based. Authentication uses API key and API secret in the Authorization header. Endpoints cover orders, shipments, carriers, and warehouses. Poll for new orders or use webhooks if available for your plan. Batch operations are supported for bulk label creation. ## Twilio SMS Integration Twilio's REST API requires Account SID and Auth Token. The Messaging API endpoint is /2010-04-01/Accounts/{AccountSid}/Messages.json. For two-way messaging, configure a webhook URL to receive incoming messages. Consider using a queue for high-volume outbound SMS to avoid rate limits. # PentaCodes Technical Reference and Integration Documentation # Version 1.0 | Last Updated March 2025 # This document contains technical reference material for common integrations and deployment procedures. ## QuickBooks Online Integration The QuickBooks Online API uses OAuth 2.0 for authentication. You will need to register your application in the Intuit Developer Portal to obtain client credentials. The base URL for the API is https://quickbooks.api.intuit.com/v3/company/{realmId}. Common endpoints include /invoice, /customer, /payment, and /bill. Rate limits apply: 500 requests per minute for production apps. Always implement exponential backoff for 429 responses. ## Stripe Payment Integration Stripe provides both client-side (Stripe.js) and server-side APIs. For PCI compliance, never pass raw card numbers through your server—use Stripe Elements or the Payment Intents API. Webhooks are essential for handling asynchronous events like payment succeeded or subscription renewed. Configure your webhook endpoint to verify signatures using the Stripe-Signature header. ## ShipStation Integration The ShipStation API is REST-based. Authentication uses API key and API secret in the Authorization header. Endpoints cover orders, shipments, carriers, and warehouses. Poll for new orders or use webhooks if available for your plan. Batch operations are supported for bulk label creation. ## Twilio SMS Integration Twilio's REST API requires Account SID and Auth Token. The Messaging API endpoint is /2010-04-01/Accounts/{AccountSid}/Messages.json. For two-way messaging, configure a webhook URL to receive incoming messages. Consider using a queue for high-volume outbound SMS to avoid rate limits. # PentaCodes Technical Reference and Integration Documentation # Version 1.0 | Last Updated March 2025 # This document contains technical reference material for common integrations and deployment procedures. ## QuickBooks Online Integration The QuickBooks Online API uses OAuth 2.0 for authentication. You will need to register your application in the Intuit Developer Portal to obtain client credentials. The base URL for the API is https://quickbooks.api.intuit.com/v3/company/{realmId}. Common endpoints include /invoice, /customer, /payment, and /bill. Rate limits apply: 500 requests per minute for production apps. Always implement exponential backoff for 429 responses. ## Stripe Payment Integration Stripe provides both client-side (Stripe.js) and server-side APIs. For PCI compliance, never pass raw card numbers through your server—use Stripe Elements or the Payment Intents API. Webhooks are essential for handling asynchronous events like payment succeeded or subscription renewed. Configure your webhook endpoint to verify signatures using the Stripe-Signature header. ## ShipStation Integration The ShipStation API is REST-based. Authentication uses API key and API secret in the Authorization header. Endpoints cover orders, shipments, carriers, and warehouses. Poll for new orders or use webhooks if available for your plan. Batch operations are supported for bulk label creation. ## Twilio SMS Integration Twilio's REST API requires Account SID and Auth Token. The Messaging API endpoint is /2010-04-01/Accounts/{AccountSid}/Messages.json. For two-way messaging, configure a webhook URL to receive incoming messages. Consider using a queue for high-volume outbound SMS to avoid rate limits. # PentaCodes Technical Reference and Integration Documentation # Version 1.0 | Last Updated March 2025 # This document contains technical reference material for common integrations and deployment procedures. ## QuickBooks Online Integration The QuickBooks Online API uses OAuth 2.0 for authentication. You will need to register your application in the Intuit Developer Portal to obtain client credentials. The base URL for the API is https://quickbooks.api.intuit.com/v3/company/{realmId}. Common endpoints include /invoice, /customer, /payment, and /bill. Rate limits apply: 500 requests per minute for production apps. Always implement exponential backoff for 429 responses. ## Stripe Payment Integration Stripe provides both client-side (Stripe.js) and server-side APIs. For PCI compliance, never pass raw card numbers through your server—use Stripe Elements or the Payment Intents API. Webhooks are essential for handling asynchronous events like payment succeeded or subscription renewed. Configure your webhook endpoint to verify signatures using the Stripe-Signature header. ## ShipStation Integration The ShipStation API is REST-based. Authentication uses API key and API secret in the Authorization header. Endpoints cover orders, shipments, carriers, and warehouses. Poll for new orders or use webhooks if available for your plan. Batch operations are supported for bulk label creation. ## Twilio SMS Integration Twilio's REST API requires Account SID and Auth Token. The Messaging API endpoint is /2010-04-01/Accounts/{AccountSid}/Messages.json. For two-way messaging, configure a webhook URL to receive incoming messages. Consider using a queue for high-volume outbound SMS to avoid rate limits. # PentaCodes Technical Reference and Integration Documentation # Version 1.0 | Last Updated March 2025 # This document contains technical reference material for common integrations and deployment procedures. ## QuickBooks Online Integration The QuickBooks Online API uses OAuth 2.0 for authentication. You will need to register your application in the Intuit Developer Portal to obtain client credentials. The base URL for the API is https://quickbooks.api.intuit.com/v3/company/{realmId}. Common endpoints include /invoice, /customer, /payment, and /bill. Rate limits apply: 500 requests per minute for production apps. Always implement exponential backoff for 429 responses. ## Stripe Payment Integration Stripe provides both client-side (Stripe.js) and server-side APIs. For PCI compliance, never pass raw card numbers through your server—use Stripe Elements or the Payment Intents API. Webhooks are essential for handling asynchronous events like payment succeeded or subscription renewed. Configure your webhook endpoint to verify signatures using the Stripe-Signature header. ## ShipStation Integration The ShipStation API is REST-based. Authentication uses API key and API secret in the Authorization header. Endpoints cover orders, shipments, carriers, and warehouses. Poll for new orders or use webhooks if available for your plan. Batch operations are supported for bulk label creation. ## Twilio SMS Integration Twilio's REST API requires Account SID and Auth Token. The Messaging API endpoint is /2010-04-01/Accounts/{AccountSid}/Messages.json. For two-way messaging, configure a webhook URL to receive incoming messages. Consider using a queue for high-volume outbound SMS to avoid rate limits. # PentaCodes Technical Reference and Integration Documentation # Version 1.0 | Last Updated March 2025 # This document contains technical reference material for common integrations and deployment procedures. ## QuickBooks Online Integration The QuickBooks Online API uses OAuth 2.0 for authentication. You will need to register your application in the Intuit Developer Portal to obtain client credentials. The base URL for the API is https://quickbooks.api.intuit.com/v3/company/{realmId}. Common endpoints include /invoice, /customer, /payment, and /bill. Rate limits apply: 500 requests per minute for production apps. Always implement exponential backoff for 429 responses. ## Stripe Payment Integration Stripe provides both client-side (Stripe.js) and server-side APIs. For PCI compliance, never pass raw card numbers through your server—use Stripe Elements or the Payment Intents API. Webhooks are essential for handling asynchronous events like payment succeeded or subscription renewed. Configure your webhook endpoint to verify signatures using the Stripe-Signature header. ## ShipStation Integration The ShipStation API is REST-based. Authentication uses API key and API secret in the Authorization header. Endpoints cover orders, shipments, carriers, and warehouses. Poll for new orders or use webhooks if available for your plan. Batch operations are supported for bulk label creation. ## Twilio SMS Integration Twilio's REST API requires Account SID and Auth Token. The Messaging API endpoint is /2010-04-01/Accounts/{AccountSid}/Messages.json. For two-way messaging, configure a webhook URL to receive incoming messages. Consider using a queue for high-volume outbound SMS to avoid rate limits. # PentaCodes Technical Reference and Integration Documentation # Version 1.0 | Last Updated March 2025 # This document contains technical reference material for common integrations and deployment procedures. ## QuickBooks Online Integration The QuickBooks Online API uses OAuth 2.0 for authentication. You will need to register your application in the Intuit Developer Portal to obtain client credentials. The base URL for the API is https://quickbooks.api.intuit.com/v3/company/{realmId}. Common endpoints include /invoice, /customer, /payment, and /bill. Rate limits apply: 500 requests per minute for production apps. Always implement exponential backoff for 429 responses. ## Stripe Payment Integration Stripe provides both client-side (Stripe.js) and server-side APIs. For PCI compliance, never pass raw card numbers through your server—use Stripe Elements or the Payment Intents API. Webhooks are essential for handling asynchronous events like payment succeeded or subscription renewed. Configure your webhook endpoint to verify signatures using the Stripe-Signature header. ## ShipStation Integration The ShipStation API is REST-based. Authentication uses API key and API secret in the Authorization header. Endpoints cover orders, shipments, carriers, and warehouses. Poll for new orders or use webhooks if available for your plan. Batch operations are supported for bulk label creation. ## Twilio SMS Integration Twilio's REST API requires Account SID and Auth Token. The Messaging API endpoint is /2010-04-01/Accounts/{AccountSid}/Messages.json. For two-way messaging, configure a webhook URL to receive incoming messages. Consider using a queue for high-volume outbound SMS to avoid rate limits. # PentaCodes Technical Reference and Integration Documentation # Version 1.0 | Last Updated March 2025 # This document contains technical reference material for common integrations and deployment procedures. ## QuickBooks Online Integration The QuickBooks Online API uses OAuth 2.0 for authentication. You will need to register your application in the Intuit Developer Portal to obtain client credentials. The base URL for the API is https://quickbooks.api.intuit.com/v3/company/{realmId}. Common endpoints include /invoice, /customer, /payment, and /bill. Rate limits apply: 500 requests per minute for production apps. Always implement exponential backoff for 429 responses. ## Stripe Payment Integration Stripe provides both client-side (Stripe.js) and server-side APIs. For PCI compliance, never pass raw card numbers through your server—use Stripe Elements or the Payment Intents API. Webhooks are essential for handling asynchronous events like payment succeeded or subscription renewed. Configure your webhook endpoint to verify signatures using the Stripe-Signature header. ## ShipStation Integration The ShipStation API is REST-based. Authentication uses API key and API secret in the Authorization header. Endpoints cover orders, shipments, carriers, and warehouses. Poll for new orders or use webhooks if available for your plan. Batch operations are supported for bulk label creation. ## Twilio SMS Integration Twilio's REST API requires Account SID and Auth Token. The Messaging API endpoint is /2010-04-01/Accounts/{AccountSid}/Messages.json. For two-way messaging, configure a webhook URL to receive incoming messages. Consider using a queue for high-volume outbound SMS to avoid rate limits. # PentaCodes Technical Reference and Integration Documentation # Version 1.0 | Last Updated March 2025 # This document contains technical reference material for common integrations and deployment procedures. ## QuickBooks Online Integration The QuickBooks Online API uses OAuth 2.0 for authentication. You will need to register your application in the Intuit Developer Portal to obtain client credentials. The base URL for the API is https://quickbooks.api.intuit.com/v3/company/{realmId}. Common endpoints include /invoice, /customer, /payment, and /bill. Rate limits apply: 500 requests per minute for production apps. Always implement exponential backoff for 429 responses. ## Stripe Payment Integration Stripe provides both client-side (Stripe.js) and server-side APIs. For PCI compliance, never pass raw card numbers through your server—use Stripe Elements or the Payment Intents API. Webhooks are essential for handling asynchronous events like payment succeeded or subscription renewed. Configure your webhook endpoint to verify signatures using the Stripe-Signature header. ## ShipStation Integration The ShipStation API is REST-based. Authentication uses API key and API secret in the Authorization header. Endpoints cover orders, shipments, carriers, and warehouses. Poll for new orders or use webhooks if available for your plan. Batch operations are supported for bulk label creation. ## Twilio SMS Integration Twilio's REST API requires Account SID and Auth Token. The Messaging API endpoint is /2010-04-01/Accounts/{AccountSid}/Messages.json. For two-way messaging, configure a webhook URL to receive incoming messages. Consider using a queue for high-volume outbound SMS to avoid rate limits. # PentaCodes Technical Reference and Integration Documentation # Version 1.0 | Last Updated March 2025 # This document contains technical reference material for common integrations and deployment procedures. ## QuickBooks Online Integration The QuickBooks Online API uses OAuth 2.0 for authentication. You will need to register your application in the Intuit Developer Portal to obtain client credentials. The base URL for the API is https://quickbooks.api.intuit.com/v3/company/{realmId}. Common endpoints include /invoice, /customer, /payment, and /bill. Rate limits apply: 500 requests per minute for production apps. Always implement exponential backoff for 429 responses. ## Stripe Payment Integration Stripe provides both client-side (Stripe.js) and server-side APIs. For PCI compliance, never pass raw card numbers through your server—use Stripe Elements or the Payment Intents API. Webhooks are essential for handling asynchronous events like payment succeeded or subscription renewed. Configure your webhook endpoint to verify signatures using the Stripe-Signature header. ## ShipStation Integration The ShipStation API is REST-based. Authentication uses API key and API secret in the Authorization header. Endpoints cover orders, shipments, carriers, and warehouses. Poll for new orders or use webhooks if available for your plan. Batch operations are supported for bulk label creation. ## Twilio SMS Integration Twilio's REST API requires Account SID and Auth Token. The Messaging API endpoint is /2010-04-01/Accounts/{AccountSid}/Messages.json. For two-way messaging, configure a webhook URL to receive incoming messages. Consider using a queue for high-volume outbound SMS to avoid rate limits. # PentaCodes Technical Reference and Integration Documentation # Version 1.0 | Last Updated March 2025 # This document contains technical reference material for common integrations and deployment procedures. ## QuickBooks Online Integration The QuickBooks Online API uses OAuth 2.0 for authentication. You will need to register your application in the Intuit Developer Portal to obtain client credentials. The base URL for the API is https://quickbooks.api.intuit.com/v3/company/{realmId}. Common endpoints include /invoice, /customer, /payment, and /bill. Rate limits apply: 500 requests per minute for production apps. Always implement exponential backoff for 429 responses. ## Stripe Payment Integration Stripe provides both client-side (Stripe.js) and server-side APIs. For PCI compliance, never pass raw card numbers through your server—use Stripe Elements or the Payment Intents API. Webhooks are essential for handling asynchronous events like payment succeeded or subscription renewed. Configure your webhook endpoint to verify signatures using the Stripe-Signature header. ## ShipStation Integration The ShipStation API is REST-based. Authentication uses API key and API secret in the Authorization header. Endpoints cover orders, shipments, carriers, and warehouses. Poll for new orders or use webhooks if available for your plan. Batch operations are supported for bulk label creation. ## Twilio SMS Integration Twilio's REST API requires Account SID and Auth Token. The Messaging API endpoint is /2010-04-01/Accounts/{AccountSid}/Messages.json. For two-way messaging, configure a webhook URL to receive incoming messages. Consider using a queue for high-volume outbound SMS to avoid rate limits. # PentaCodes Technical Reference and Integration Documentation # Version 1.0 | Last Updated March 2025 # This document contains technical reference material for common integrations and deployment procedures. ## QuickBooks Online Integration The QuickBooks Online API uses OAuth 2.0 for authentication. You will need to register your application in the Intuit Developer Portal to obtain client credentials. The base URL for the API is https://quickbooks.api.intuit.com/v3/company/{realmId}. Common endpoints include /invoice, /customer, /payment, and /bill. Rate limits apply: 500 requests per minute for production apps. Always implement exponential backoff for 429 responses. ## Stripe Payment Integration Stripe provides both client-side (Stripe.js) and server-side APIs. For PCI compliance, never pass raw card numbers through your server—use Stripe Elements or the Payment Intents API. Webhooks are essential for handling asynchronous events like payment succeeded or subscription renewed. Configure your webhook endpoint to verify signatures using the Stripe-Signature header. ## ShipStation Integration The ShipStation API is REST-based. Authentication uses API key and API secret in the Authorization header. Endpoints cover orders, shipments, carriers, and warehouses. Poll for new orders or use webhooks if available for your plan. Batch operations are supported for bulk label creation. ## Twilio SMS Integration Twilio's REST API requires Account SID and Auth Token. The Messaging API endpoint is /2010-04-01/Accounts/{AccountSid}/Messages.json. For two-way messaging, configure a webhook URL to receive incoming messages. Consider using a queue for high-volume outbound SMS to avoid rate limits. # PentaCodes Technical Reference and Integration Documentation # Version 1.0 | Last Updated March 2025 # This document contains technical reference material for common integrations and deployment procedures. ## QuickBooks Online Integration The QuickBooks Online API uses OAuth 2.0 for authentication. You will need to register your application in the Intuit Developer Portal to obtain client credentials. The base URL for the API is https://quickbooks.api.intuit.com/v3/company/{realmId}. Common endpoints include /invoice, /customer, /payment, and /bill. Rate limits apply: 500 requests per minute for production apps. Always implement exponential backoff for 429 responses. ## Stripe Payment Integration Stripe provides both client-side (Stripe.js) and server-side APIs. For PCI compliance, never pass raw card numbers through your server—use Stripe Elements or the Payment Intents API. Webhooks are essential for handling asynchronous events like payment succeeded or subscription renewed. Configure your webhook endpoint to verify signatures using the Stripe-Signature header. ## ShipStation Integration The ShipStation API is REST-based. Authentication uses API key and API secret in the Authorization header. Endpoints cover orders, shipments, carriers, and warehouses. Poll for new orders or use webhooks if available for your plan. Batch operations are supported for bulk label creation. ## Twilio SMS Integration Twilio's REST API requires Account SID and Auth Token. The Messaging API endpoint is /2010-04-01/Accounts/{AccountSid}/Messages.json. For two-way messaging, configure a webhook URL to receive incoming messages. Consider using a queue for high-volume outbound SMS to avoid rate limits. # PentaCodes Technical Reference and Integration Documentation # Version 1.0 | Last Updated March 2025 # This document contains technical reference material for common integrations and deployment procedures. ## QuickBooks Online Integration The QuickBooks Online API uses OAuth 2.0 for authentication. You will need to register your application in the Intuit Developer Portal to obtain client credentials. The base URL for the API is https://quickbooks.api.intuit.com/v3/company/{realmId}. Common endpoints include /invoice, /customer, /payment, and /bill. Rate limits apply: 500 requests per minute for production apps. Always implement exponential backoff for 429 responses. ## Stripe Payment Integration Stripe provides both client-side (Stripe.js) and server-side APIs. For PCI compliance, never pass raw card numbers through your server—use Stripe Elements or the Payment Intents API. Webhooks are essential for handling asynchronous events like payment succeeded or subscription renewed. Configure your webhook endpoint to verify signatures using the Stripe-Signature header. ## ShipStation Integration The ShipStation API is REST-based. Authentication uses API key and API secret in the Authorization header. Endpoints cover orders, shipments, carriers, and warehouses. Poll for new orders or use webhooks if available for your plan. Batch operations are supported for bulk label creation. ## Twilio SMS Integration Twilio's REST API requires Account SID and Auth Token. The Messaging API endpoint is /2010-04-01/Accounts/{AccountSid}/Messages.json. For two-way messaging, configure a webhook URL to receive incoming messages. Consider using a queue for high-volume outbound SMS to avoid rate limits. # PentaCodes Technical Reference and Integration Documentation # Version 1.0 | Last Updated March 2025 # This document contains technical reference material for common integrations and deployment procedures. ## QuickBooks Online Integration The QuickBooks Online API uses OAuth 2.0 for authentication. You will need to register your application in the Intuit Developer Portal to obtain client credentials. The base URL for the API is https://quickbooks.api.intuit.com/v3/company/{realmId}. Common endpoints include /invoice, /customer, /payment, and /bill. Rate limits apply: 500 requests per minute for production apps. Always implement exponential backoff for 429 responses. ## Stripe Payment Integration Stripe provides both client-side (Stripe.js) and server-side APIs. For PCI compliance, never pass raw card numbers through your server—use Stripe Elements or the Payment Intents API. Webhooks are essential for handling asynchronous events like payment succeeded or subscription renewed. Configure your webhook endpoint to verify signatures using the Stripe-Signature header. ## ShipStation Integration The ShipStation API is REST-based. Authentication uses API key and API secret in the Authorization header. Endpoints cover orders, shipments, carriers, and warehouses. Poll for new orders or use webhooks if available for your plan. Batch operations are supported for bulk label creation. ## Twilio SMS Integration Twilio's REST API requires Account SID and Auth Token. The Messaging API endpoint is /2010-04-01/Accounts/{AccountSid}/Messages.json. For two-way messaging, configure a webhook URL to receive incoming messages. Consider using a queue for high-volume outbound SMS to avoid rate limits. # PentaCodes Technical Reference and Integration Documentation # Version 1.0 | Last Updated March 2025 # This document contains technical reference material for common integrations and deployment procedures. ## QuickBooks Online Integration The QuickBooks Online API uses OAuth 2.0 for authentication. You will need to register your application in the Intuit Developer Portal to obtain client credentials. The base URL for the API is https://quickbooks.api.intuit.com/v3/company/{realmId}. Common endpoints include /invoice, /customer, /payment, and /bill. Rate limits apply: 500 requests per minute for production apps. Always implement exponential backoff for 429 responses. ## Stripe Payment Integration Stripe provides both client-side (Stripe.js) and server-side APIs. For PCI compliance, never pass raw card numbers through your server—use Stripe Elements or the Payment Intents API. Webhooks are essential for handling asynchronous events like payment succeeded or subscription renewed. Configure your webhook endpoint to verify signatures using the Stripe-Signature header. ## ShipStation Integration The ShipStation API is REST-based. Authentication uses API key and API secret in the Authorization header. Endpoints cover orders, shipments, carriers, and warehouses. Poll for new orders or use webhooks if available for your plan. Batch operations are supported for bulk label creation. ## Twilio SMS Integration Twilio's REST API requires Account SID and Auth Token. The Messaging API endpoint is /2010-04-01/Accounts/{AccountSid}/Messages.json. For two-way messaging, configure a webhook URL to receive incoming messages. Consider using a queue for high-volume outbound SMS to avoid rate limits. # PentaCodes Technical Reference and Integration Documentation # Version 1.0 | Last Updated March 2025 # This document contains technical reference material for common integrations and deployment procedures. ## QuickBooks Online Integration The QuickBooks Online API uses OAuth 2.0 for authentication. You will need to register your application in the Intuit Developer Portal to obtain client credentials. The base URL for the API is https://quickbooks.api.intuit.com/v3/company/{realmId}. Common endpoints include /invoice, /customer, /payment, and /bill. Rate limits apply: 500 requests per minute for production apps. Always implement exponential backoff for 429 responses. ## Stripe Payment Integration Stripe provides both client-side (Stripe.js) and server-side APIs. For PCI compliance, never pass raw card numbers through your server—use Stripe Elements or the Payment Intents API. Webhooks are essential for handling asynchronous events like payment succeeded or subscription renewed. Configure your webhook endpoint to verify signatures using the Stripe-Signature header. ## ShipStation Integration The ShipStation API is REST-based. Authentication uses API key and API secret in the Authorization header. Endpoints cover orders, shipments, carriers, and warehouses. Poll for new orders or use webhooks if available for your plan. Batch operations are supported for bulk label creation. ## Twilio SMS Integration Twilio's REST API requires Account SID and Auth Token. The Messaging API endpoint is /2010-04-01/Accounts/{AccountSid}/Messages.json. For two-way messaging, configure a webhook URL to receive incoming messages. Consider using a queue for high-volume outbound SMS to avoid rate limits. # PentaCodes Technical Reference and Integration Documentation # Version 1.0 | Last Updated March 2025 # This document contains technical reference material for common integrations and deployment procedures. ## QuickBooks Online Integration The QuickBooks Online API uses OAuth 2.0 for authentication. You will need to register your application in the Intuit Developer Portal to obtain client credentials. The base URL for the API is https://quickbooks.api.intuit.com/v3/company/{realmId}. Common endpoints include /invoice, /customer, /payment, and /bill. Rate limits apply: 500 requests per minute for production apps. Always implement exponential backoff for 429 responses. ## Stripe Payment Integration Stripe provides both client-side (Stripe.js) and server-side APIs. For PCI compliance, never pass raw card numbers through your server—use Stripe Elements or the Payment Intents API. Webhooks are essential for handling asynchronous events like payment succeeded or subscription renewed. Configure your webhook endpoint to verify signatures using the Stripe-Signature header. ## ShipStation Integration The ShipStation API is REST-based. Authentication uses API key and API secret in the Authorization header. Endpoints cover orders, shipments, carriers, and warehouses. Poll for new orders or use webhooks if available for your plan. Batch operations are supported for bulk label creation. ## Twilio SMS Integration Twilio's REST API requires Account SID and Auth Token. The Messaging API endpoint is /2010-04-01/Accounts/{AccountSid}/Messages.json. For two-way messaging, configure a webhook URL to receive incoming messages. Consider using a queue for high-volume outbound SMS to avoid rate limits. # PentaCodes Technical Reference and Integration Documentation # Version 1.0 | Last Updated March 2025 # This document contains technical reference material for common integrations and deployment procedures. ## QuickBooks Online Integration The QuickBooks Online API uses OAuth 2.0 for authentication. You will need to register your application in the Intuit Developer Portal to obtain client credentials. The base URL for the API is https://quickbooks.api.intuit.com/v3/company/{realmId}. Common endpoints include /invoice, /customer, /payment, and /bill. Rate limits apply: 500 requests per minute for production apps. Always implement exponential backoff for 429 responses. ## Stripe Payment Integration Stripe provides both client-side (Stripe.js) and server-side APIs. For PCI compliance, never pass raw card numbers through your server—use Stripe Elements or the Payment Intents API. Webhooks are essential for handling asynchronous events like payment succeeded or subscription renewed. Configure your webhook endpoint to verify signatures using the Stripe-Signature header. ## ShipStation Integration The ShipStation API is REST-based. Authentication uses API key and API secret in the Authorization header. Endpoints cover orders, shipments, carriers, and warehouses. Poll for new orders or use webhooks if available for your plan. Batch operations are supported for bulk label creation. ## Twilio SMS Integration Twilio's REST API requires Account SID and Auth Token. The Messaging API endpoint is /2010-04-01/Accounts/{AccountSid}/Messages.json. For two-way messaging, configure a webhook URL to receive incoming messages. Consider using a queue for high-volume outbound SMS to avoid rate limits. # PentaCodes Technical Reference and Integration Documentation # Version 1.0 | Last Updated March 2025 # This document contains technical reference material for common integrations and deployment procedures. ## QuickBooks Online Integration The QuickBooks Online API uses OAuth 2.0 for authentication. You will need to register your application in the Intuit Developer Portal to obtain client credentials. The base URL for the API is https://quickbooks.api.intuit.com/v3/company/{realmId}. Common endpoints include /invoice, /customer, /payment, and /bill. Rate limits apply: 500 requests per minute for production apps. Always implement exponential backoff for 429 responses. ## Stripe Payment Integration Stripe provides both client-side (Stripe.js) and server-side APIs. For PCI compliance, never pass raw card numbers through your server—use Stripe Elements or the Payment Intents API. Webhooks are essential for handling asynchronous events like payment succeeded or subscription renewed. Configure your webhook endpoint to verify signatures using the Stripe-Signature header. ## ShipStation Integration The ShipStation API is REST-based. Authentication uses API key and API secret in the Authorization header. Endpoints cover orders, shipments, carriers, and warehouses. Poll for new orders or use webhooks if available for your plan. Batch operations are supported for bulk label creation. ## Twilio SMS Integration Twilio's REST API requires Account SID and Auth Token. The Messaging API endpoint is /2010-04-01/Accounts/{AccountSid}/Messages.json. For two-way messaging, configure a webhook URL to receive incoming messages. Consider using a queue for high-volume outbound SMS to avoid rate limits. # PentaCodes Technical Reference and Integration Documentation # Version 1.0 | Last Updated March 2025 # This document contains technical reference material for common integrations and deployment procedures. ## QuickBooks Online Integration The QuickBooks Online API uses OAuth 2.0 for authentication. You will need to register your application in the Intuit Developer Portal to obtain client credentials. The base URL for the API is https://quickbooks.api.intuit.com/v3/company/{realmId}. Common endpoints include /invoice, /customer, /payment, and /bill. Rate limits apply: 500 requests per minute for production apps. Always implement exponential backoff for 429 responses. ## Stripe Payment Integration Stripe provides both client-side (Stripe.js) and server-side APIs. For PCI compliance, never pass raw card numbers through your server—use Stripe Elements or the Payment Intents API. Webhooks are essential for handling asynchronous events like payment succeeded or subscription renewed. Configure your webhook endpoint to verify signatures using the Stripe-Signature header. ## ShipStation Integration The ShipStation API is REST-based. Authentication uses API key and API secret in the Authorization header. Endpoints cover orders, shipments, carriers, and warehouses. Poll for new orders or use webhooks if available for your plan. Batch operations are supported for bulk label creation. ## Twilio SMS Integration Twilio's REST API requires Account SID and Auth Token. The Messaging API endpoint is /2010-04-01/Accounts/{AccountSid}/Messages.json. For two-way messaging, configure a webhook URL to receive incoming messages. Consider using a queue for high-volume outbound SMS to avoid rate limits. # PentaCodes Technical Reference and Integration Documentation # Version 1.0 | Last Updated March 2025 # This document contains technical reference material for common integrations and deployment procedures. ## QuickBooks Online Integration The QuickBooks Online API uses OAuth 2.0 for authentication. You will need to register your application in the Intuit Developer Portal to obtain client credentials. The base URL for the API is https://quickbooks.api.intuit.com/v3/company/{realmId}. Common endpoints include /invoice, /customer, /payment, and /bill. Rate limits apply: 500 requests per minute for production apps. Always implement exponential backoff for 429 responses. ## Stripe Payment Integration Stripe provides both client-side (Stripe.js) and server-side APIs. For PCI compliance, never pass raw card numbers through your server—use Stripe Elements or the Payment Intents API. Webhooks are essential for handling asynchronous events like payment succeeded or subscription renewed. Configure your webhook endpoint to verify signatures using the Stripe-Signature header. ## ShipStation Integration The ShipStation API is REST-based. Authentication uses API key and API secret in the Authorization header. Endpoints cover orders, shipments, carriers, and warehouses. Poll for new orders or use webhooks if available for your plan. Batch operations are supported for bulk label creation. ## Twilio SMS Integration Twilio's REST API requires Account SID and Auth Token. The Messaging API endpoint is /2010-04-01/Accounts/{AccountSid}/Messages.json. For two-way messaging, configure a webhook URL to receive incoming messages. Consider using a queue for high-volume outbound SMS to avoid rate limits. # PentaCodes Technical Reference and Integration Documentation # Version 1.0 | Last Updated March 2025 # This document contains technical reference material for common integrations and deployment procedures. ## QuickBooks Online Integration The QuickBooks Online API uses OAuth 2.0 for authentication. You will need to register your application in the Intuit Developer Portal to obtain client credentials. The base URL for the API is https://quickbooks.api.intuit.com/v3/company/{realmId}. Common endpoints include /invoice, /customer, /payment, and /bill. Rate limits apply: 500 requests per minute for production apps. Always implement exponential backoff for 429 responses. ## Stripe Payment Integration Stripe provides both client-side (Stripe.js) and server-side APIs. For PCI compliance, never pass raw card numbers through your server—use Stripe Elements or the Payment Intents API. Webhooks are essential for handling asynchronous events like payment succeeded or subscription renewed. Configure your webhook endpoint to verify signatures using the Stripe-Signature header. ## ShipStation Integration The ShipStation API is REST-based. Authentication uses API key and API secret in the Authorization header. Endpoints cover orders, shipments, carriers, and warehouses. Poll for new orders or use webhooks if available for your plan. Batch operations are supported for bulk label creation. ## Twilio SMS Integration Twilio's REST API requires Account SID and Auth Token. The Messaging API endpoint is /2010-04-01/Accounts/{AccountSid}/Messages.json. For two-way messaging, configure a webhook URL to receive incoming messages. Consider using a queue for high-volume outbound SMS to avoid rate limits. # PentaCodes Technical Reference and Integration Documentation # Version 1.0 | Last Updated March 2025 # This document contains technical reference material for common integrations and deployment procedures. ## QuickBooks Online Integration The QuickBooks Online API uses OAuth 2.0 for authentication. You will need to register your application in the Intuit Developer Portal to obtain client credentials. The base URL for the API is https://quickbooks.api.intuit.com/v3/company/{realmId}. Common endpoints include /invoice, /customer, /payment, and /bill. Rate limits apply: 500 requests per minute for production apps. Always implement exponential backoff for 429 responses. ## Stripe Payment Integration Stripe provides both client-side (Stripe.js) and server-side APIs. For PCI compliance, never pass raw card numbers through your server—use Stripe Elements or the Payment Intents API. Webhooks are essential for handling asynchronous events like payment succeeded or subscription renewed. Configure your webhook endpoint to verify signatures using the Stripe-Signature header. ## ShipStation Integration The ShipStation API is REST-based. Authentication uses API key and API secret in the Authorization header. Endpoints cover orders, shipments, carriers, and warehouses. Poll for new orders or use webhooks if available for your plan. Batch operations are supported for bulk label creation. ## Twilio SMS Integration Twilio's REST API requires Account SID and Auth Token. The Messaging API endpoint is /2010-04-01/Accounts/{AccountSid}/Messages.json. For two-way messaging, configure a webhook URL to receive incoming messages. Consider using a queue for high-volume outbound SMS to avoid rate limits. # PentaCodes Technical Reference and Integration Documentation # Version 1.0 | Last Updated March 2025 # This document contains technical reference material for common integrations and deployment procedures. ## QuickBooks Online Integration The QuickBooks Online API uses OAuth 2.0 for authentication. You will need to register your application in the Intuit Developer Portal to obtain client credentials. The base URL for the API is https://quickbooks.api.intuit.com/v3/company/{realmId}. Common endpoints include /invoice, /customer, /payment, and /bill. Rate limits apply: 500 requests per minute for production apps. Always implement exponential backoff for 429 responses. ## Stripe Payment Integration Stripe provides both client-side (Stripe.js) and server-side APIs. For PCI compliance, never pass raw card numbers through your server—use Stripe Elements or the Payment Intents API. Webhooks are essential for handling asynchronous events like payment succeeded or subscription renewed. Configure your webhook endpoint to verify signatures using the Stripe-Signature header. ## ShipStation Integration The ShipStation API is REST-based. Authentication uses API key and API secret in the Authorization header. Endpoints cover orders, shipments, carriers, and warehouses. Poll for new orders or use webhooks if available for your plan. Batch operations are supported for bulk label creation. ## Twilio SMS Integration Twilio's REST API requires Account SID and Auth Token. The Messaging API endpoint is /2010-04-01/Accounts/{AccountSid}/Messages.json. For two-way messaging, configure a webhook URL to receive incoming messages. Consider using a queue for high-volume outbound SMS to avoid rate limits. # PentaCodes Technical Reference and Integration Documentation # Version 1.0 | Last Updated March 2025 # This document contains technical reference material for common integrations and deployment procedures. ## QuickBooks Online Integration The QuickBooks Online API uses OAuth 2.0 for authentication. You will need to register your application in the Intuit Developer Portal to obtain client credentials. The base URL for the API is https://quickbooks.api.intuit.com/v3/company/{realmId}. Common endpoints include /invoice, /customer, /payment, and /bill. Rate limits apply: 500 requests per minute for production apps. Always implement exponential backoff for 429 responses. ## Stripe Payment Integration Stripe provides both client-side (Stripe.js) and server-side APIs. For PCI compliance, never pass raw card numbers through your server—use Stripe Elements or the Payment Intents API. Webhooks are essential for handling asynchronous events like payment succeeded or subscription renewed. Configure your webhook endpoint to verify signatures using the Stripe-Signature header. ## ShipStation Integration The ShipStation API is REST-based. Authentication uses API key and API secret in the Authorization header. Endpoints cover orders, shipments, carriers, and warehouses. Poll for new orders or use webhooks if available for your plan. Batch operations are supported for bulk label creation. ## Twilio SMS Integration Twilio's REST API requires Account SID and Auth Token. The Messaging API endpoint is /2010-04-01/Accounts/{AccountSid}/Messages.json. For two-way messaging, configure a webhook URL to receive incoming messages. Consider using a queue for high-volume outbound SMS to avoid rate limits. # PentaCodes Technical Reference and Integration Documentation # Version 1.0 | Last Updated March 2025 # This document contains technical reference material for common integrations and deployment procedures. ## QuickBooks Online Integration The QuickBooks Online API uses OAuth 2.0 for authentication. You will need to register your application in the Intuit Developer Portal to obtain client credentials. The base URL for the API is https://quickbooks.api.intuit.com/v3/company/{realmId}. Common endpoints include /invoice, /customer, /payment, and /bill. Rate limits apply: 500 requests per minute for production apps. Always implement exponential backoff for 429 responses. ## Stripe Payment Integration Stripe provides both client-side (Stripe.js) and server-side APIs. For PCI compliance, never pass raw card numbers through your server—use Stripe Elements or the Payment Intents API. Webhooks are essential for handling asynchronous events like payment succeeded or subscription renewed. Configure your webhook endpoint to verify signatures using the Stripe-Signature header. ## ShipStation Integration The ShipStation API is REST-based. Authentication uses API key and API secret in the Authorization header. Endpoints cover orders, shipments, carriers, and warehouses. Poll for new orders or use webhooks if available for your plan. Batch operations are supported for bulk label creation. ## Twilio SMS Integration Twilio's REST API requires Account SID and Auth Token. The Messaging API endpoint is /2010-04-01/Accounts/{AccountSid}/Messages.json. For two-way messaging, configure a webhook URL to receive incoming messages. Consider using a queue for high-volume outbound SMS to avoid rate limits. # PentaCodes Technical Reference and Integration Documentation # Version 1.0 | Last Updated March 2025 # This document contains technical reference material for common integrations and deployment procedures. ## QuickBooks Online Integration The QuickBooks Online API uses OAuth 2.0 for authentication. You will need to register your application in the Intuit Developer Portal to obtain client credentials. The base URL for the API is https://quickbooks.api.intuit.com/v3/company/{realmId}. Common endpoints include /invoice, /customer, /payment, and /bill. Rate limits apply: 500 requests per minute for production apps. Always implement exponential backoff for 429 responses. ## Stripe Payment Integration Stripe provides both client-side (Stripe.js) and server-side APIs. For PCI compliance, never pass raw card numbers through your server—use Stripe Elements or the Payment Intents API. Webhooks are essential for handling asynchronous events like payment succeeded or subscription renewed. Configure your webhook endpoint to verify signatures using the Stripe-Signature header. ## ShipStation Integration The ShipStation API is REST-based. Authentication uses API key and API secret in the Authorization header. Endpoints cover orders, shipments, carriers, and warehouses. Poll for new orders or use webhooks if available for your plan. Batch operations are supported for bulk label creation. ## Twilio SMS Integration Twilio's REST API requires Account SID and Auth Token. The Messaging API endpoint is /2010-04-01/Accounts/{AccountSid}/Messages.json. For two-way messaging, configure a webhook URL to receive incoming messages. Consider using a queue for high-volume outbound SMS to avoid rate limits. # PentaCodes Technical Reference and Integration Documentation # Version 1.0 | Last Updated March 2025 # This document contains technical reference material for common integrations and deployment procedures. ## QuickBooks Online Integration The QuickBooks Online API uses OAuth 2.0 for authentication. You will need to register your application in the Intuit Developer Portal to obtain client credentials. The base URL for the API is https://quickbooks.api.intuit.com/v3/company/{realmId}. Common endpoints include /invoice, /customer, /payment, and /bill. Rate limits apply: 500 requests per minute for production apps. Always implement exponential backoff for 429 responses. ## Stripe Payment Integration Stripe provides both client-side (Stripe.js) and server-side APIs. For PCI compliance, never pass raw card numbers through your server—use Stripe Elements or the Payment Intents API. Webhooks are essential for handling asynchronous events like payment succeeded or subscription renewed. Configure your webhook endpoint to verify signatures using the Stripe-Signature header. ## ShipStation Integration The ShipStation API is REST-based. Authentication uses API key and API secret in the Authorization header. Endpoints cover orders, shipments, carriers, and warehouses. Poll for new orders or use webhooks if available for your plan. Batch operations are supported for bulk label creation. ## Twilio SMS Integration Twilio's REST API requires Account SID and Auth Token. The Messaging API endpoint is /2010-04-01/Accounts/{AccountSid}/Messages.json. For two-way messaging, configure a webhook URL to receive incoming messages. Consider using a queue for high-volume outbound SMS to avoid rate limits. # PentaCodes Technical Reference and Integration Documentation # Version 1.0 | Last Updated March 2025 # This document contains technical reference material for common integrations and deployment procedures. ## QuickBooks Online Integration The QuickBooks Online API uses OAuth 2.0 for authentication. You will need to register your application in the Intuit Developer Portal to obtain client credentials. The base URL for the API is https://quickbooks.api.intuit.com/v3/company/{realmId}. Common endpoints include /invoice, /customer, /payment, and /bill. Rate limits apply: 500 requests per minute for production apps. Always implement exponential backoff for 429 responses. ## Stripe Payment Integration Stripe provides both client-side (Stripe.js) and server-side APIs. For PCI compliance, never pass raw card numbers through your server—use Stripe Elements or the Payment Intents API. Webhooks are essential for handling asynchronous events like payment succeeded or subscription renewed. Configure your webhook endpoint to verify signatures using the Stripe-Signature header. ## ShipStation Integration The ShipStation API is REST-based. Authentication uses API key and API secret in the Authorization header. Endpoints cover orders, shipments, carriers, and warehouses. Poll for new orders or use webhooks if available for your plan. Batch operations are supported for bulk label creation. ## Twilio SMS Integration Twilio's REST API requires Account SID and Auth Token. The Messaging API endpoint is /2010-04-01/Accounts/{AccountSid}/Messages.json. For two-way messaging, configure a webhook URL to receive incoming messages. Consider using a queue for high-volume outbound SMS to avoid rate limits. # PentaCodes Technical Reference and Integration Documentation # Version 1.0 | Last Updated March 2025 # This document contains technical reference material for common integrations and deployment procedures. ## QuickBooks Online Integration The QuickBooks Online API uses OAuth 2.0 for authentication. You will need to register your application in the Intuit Developer Portal to obtain client credentials. The base URL for the API is https://quickbooks.api.intuit.com/v3/company/{realmId}. Common endpoints include /invoice, /customer, /payment, and /bill. Rate limits apply: 500 requests per minute for production apps. Always implement exponential backoff for 429 responses. ## Stripe Payment Integration Stripe provides both client-side (Stripe.js) and server-side APIs. For PCI compliance, never pass raw card numbers through your server—use Stripe Elements or the Payment Intents API. Webhooks are essential for handling asynchronous events like payment succeeded or subscription renewed. Configure your webhook endpoint to verify signatures using the Stripe-Signature header. ## ShipStation Integration The ShipStation API is REST-based. Authentication uses API key and API secret in the Authorization header. Endpoints cover orders, shipments, carriers, and warehouses. Poll for new orders or use webhooks if available for your plan. Batch operations are supported for bulk label creation. ## Twilio SMS Integration Twilio's REST API requires Account SID and Auth Token. The Messaging API endpoint is /2010-04-01/Accounts/{AccountSid}/Messages.json. For two-way messaging, configure a webhook URL to receive incoming messages. Consider using a queue for high-volume outbound SMS to avoid rate limits. # PentaCodes Technical Reference and Integration Documentation # Version 1.0 | Last Updated March 2025 # This document contains technical reference material for common integrations and deployment procedures. ## QuickBooks Online Integration The QuickBooks Online API uses OAuth 2.0 for authentication. You will need to register your application in the Intuit Developer Portal to obtain client credentials. The base URL for the API is https://quickbooks.api.intuit.com/v3/company/{realmId}. Common endpoints include /invoice, /customer, /payment, and /bill. Rate limits apply: 500 requests per minute for production apps. Always implement exponential backoff for 429 responses. ## Stripe Payment Integration Stripe provides both client-side (Stripe.js) and server-side APIs. For PCI compliance, never pass raw card numbers through your server—use Stripe Elements or the Payment Intents API. Webhooks are essential for handling asynchronous events like payment succeeded or subscription renewed. Configure your webhook endpoint to verify signatures using the Stripe-Signature header. ## ShipStation Integration The ShipStation API is REST-based. Authentication uses API key and API secret in the Authorization header. Endpoints cover orders, shipments, carriers, and warehouses. Poll for new orders or use webhooks if available for your plan. Batch operations are supported for bulk label creation. ## Twilio SMS Integration Twilio's REST API requires Account SID and Auth Token. The Messaging API endpoint is /2010-04-01/Accounts/{AccountSid}/Messages.json. For two-way messaging, configure a webhook URL to receive incoming messages. Consider using a queue for high-volume outbound SMS to avoid rate limits. # PentaCodes Technical Reference and Integration Documentation # Version 1.0 | Last Updated March 2025 # This document contains technical reference material for common integrations and deployment procedures. ## QuickBooks Online Integration The QuickBooks Online API uses OAuth 2.0 for authentication. You will need to register your application in the Intuit Developer Portal to obtain client credentials. The base URL for the API is https://quickbooks.api.intuit.com/v3/company/{realmId}. Common endpoints include /invoice, /customer, /payment, and /bill. Rate limits apply: 500 requests per minute for production apps. Always implement exponential backoff for 429 responses. ## Stripe Payment Integration Stripe provides both client-side (Stripe.js) and server-side APIs. For PCI compliance, never pass raw card numbers through your server—use Stripe Elements or the Payment Intents API. Webhooks are essential for handling asynchronous events like payment succeeded or subscription renewed. Configure your webhook endpoint to verify signatures using the Stripe-Signature header. ## ShipStation Integration The ShipStation API is REST-based. Authentication uses API key and API secret in the Authorization header. Endpoints cover orders, shipments, carriers, and warehouses. Poll for new orders or use webhooks if available for your plan. Batch operations are supported for bulk label creation. ## Twilio SMS Integration Twilio's REST API requires Account SID and Auth Token. The Messaging API endpoint is /2010-04-01/Accounts/{AccountSid}/Messages.json. For two-way messaging, configure a webhook URL to receive incoming messages. Consider using a queue for high-volume outbound SMS to avoid rate limits. # PentaCodes Technical Reference and Integration Documentation # Version 1.0 | Last Updated March 2025 # This document contains technical reference material for common integrations and deployment procedures. ## QuickBooks Online Integration The QuickBooks Online API uses OAuth 2.0 for authentication. You will need to register your application in the Intuit Developer Portal to obtain client credentials. The base URL for the API is https://quickbooks.api.intuit.com/v3/company/{realmId}. Common endpoints include /invoice, /customer, /payment, and /bill. Rate limits apply: 500 requests per minute for production apps. Always implement exponential backoff for 429 responses. ## Stripe Payment Integration Stripe provides both client-side (Stripe.js) and server-side APIs. For PCI compliance, never pass raw card numbers through your server—use Stripe Elements or the Payment Intents API. Webhooks are essential for handling asynchronous events like payment succeeded or subscription renewed. Configure your webhook endpoint to verify signatures using the Stripe-Signature header. ## ShipStation Integration The ShipStation API is REST-based. Authentication uses API key and API secret in the Authorization header. Endpoints cover orders, shipments, carriers, and warehouses. Poll for new orders or use webhooks if available for your plan. Batch operations are supported for bulk label creation. ## Twilio SMS Integration Twilio's REST API requires Account SID and Auth Token. The Messaging API endpoint is /2010-04-01/Accounts/{AccountSid}/Messages.json. For two-way messaging, configure a webhook URL to receive incoming messages. Consider using a queue for high-volume outbound SMS to avoid rate limits. # PentaCodes Technical Reference and Integration Documentation # Version 1.0 | Last Updated March 2025 # This document contains technical reference material for common integrations and deployment procedures. ## QuickBooks Online Integration The QuickBooks Online API uses OAuth 2.0 for authentication. You will need to register your application in the Intuit Developer Portal to obtain client credentials. The base URL for the API is https://quickbooks.api.intuit.com/v3/company/{realmId}. Common endpoints include /invoice, /customer, /payment, and /bill. Rate limits apply: 500 requests per minute for production apps. Always implement exponential backoff for 429 responses. ## Stripe Payment Integration Stripe provides both client-side (Stripe.js) and server-side APIs. For PCI compliance, never pass raw card numbers through your server—use Stripe Elements or the Payment Intents API. Webhooks are essential for handling asynchronous events like payment succeeded or subscription renewed. Configure your webhook endpoint to verify signatures using the Stripe-Signature header. ## ShipStation Integration The ShipStation API is REST-based. Authentication uses API key and API secret in the Authorization header. Endpoints cover orders, shipments, carriers, and warehouses. Poll for new orders or use webhooks if available for your plan. Batch operations are supported for bulk label creation. ## Twilio SMS Integration Twilio's REST API requires Account SID and Auth Token. The Messaging API endpoint is /2010-04-01/Accounts/{AccountSid}/Messages.json. For two-way messaging, configure a webhook URL to receive incoming messages. Consider using a queue for high-volume outbound SMS to avoid rate limits. # PentaCodes Technical Reference and Integration Documentation # Version 1.0 | Last Updated March 2025 # This document contains technical reference material for common integrations and deployment procedures. ## QuickBooks Online Integration The QuickBooks Online API uses OAuth 2.0 for authentication. You will need to register your application in the Intuit Developer Portal to obtain client credentials. The base URL for the API is https://quickbooks.api.intuit.com/v3/company/{realmId}. Common endpoints include /invoice, /customer, /payment, and /bill. Rate limits apply: 500 requests per minute for production apps. Always implement exponential backoff for 429 responses. ## Stripe Payment Integration Stripe provides both client-side (Stripe.js) and server-side APIs. For PCI compliance, never pass raw card numbers through your server—use Stripe Elements or the Payment Intents API. Webhooks are essential for handling asynchronous events like payment succeeded or subscription renewed. Configure your webhook endpoint to verify signatures using the Stripe-Signature header. ## ShipStation Integration The ShipStation API is REST-based. Authentication uses API key and API secret in the Authorization header. Endpoints cover orders, shipments, carriers, and warehouses. Poll for new orders or use webhooks if available for your plan. Batch operations are supported for bulk label creation. ## Twilio SMS Integration Twilio's REST API requires Account SID and Auth Token. The Messaging API endpoint is /2010-04-01/Accounts/{AccountSid}/Messages.json. For two-way messaging, configure a webhook URL to receive incoming messages. Consider using a queue for high-volume outbound SMS to avoid rate limits. # PentaCodes Technical Reference and Integration Documentation # Version 1.0 | Last Updated March 2025 # This document contains technical reference material for common integrations and deployment procedures. ## QuickBooks Online Integration The QuickBooks Online API uses OAuth 2.0 for authentication. You will need to register your application in the Intuit Developer Portal to obtain client credentials. The base URL for the API is https://quickbooks.api.intuit.com/v3/company/{realmId}. Common endpoints include /invoice, /customer, /payment, and /bill. Rate limits apply: 500 requests per minute for production apps. Always implement exponential backoff for 429 responses. ## Stripe Payment Integration Stripe provides both client-side (Stripe.js) and server-side APIs. For PCI compliance, never pass raw card numbers through your server—use Stripe Elements or the Payment Intents API. Webhooks are essential for handling asynchronous events like payment succeeded or subscription renewed. Configure your webhook endpoint to verify signatures using the Stripe-Signature header. ## ShipStation Integration The ShipStation API is REST-based. Authentication uses API key and API secret in the Authorization header. Endpoints cover orders, shipments, carriers, and warehouses. Poll for new orders or use webhooks if available for your plan. Batch operations are supported for bulk label creation. ## Twilio SMS Integration Twilio's REST API requires Account SID and Auth Token. The Messaging API endpoint is /2010-04-01/Accounts/{AccountSid}/Messages.json. For two-way messaging, configure a webhook URL to receive incoming messages. Consider using a queue for high-volume outbound SMS to avoid rate limits. # PentaCodes Technical Reference and Integration Documentation # Version 1.0 | Last Updated March 2025 # This document contains technical reference material for common integrations and deployment procedures. ## QuickBooks Online Integration The QuickBooks Online API uses OAuth 2.0 for authentication. You will need to register your application in the Intuit Developer Portal to obtain client credentials. The base URL for the API is https://quickbooks.api.intuit.com/v3/company/{realmId}. Common endpoints include /invoice, /customer, /payment, and /bill. Rate limits apply: 500 requests per minute for production apps. Always implement exponential backoff for 429 responses. ## Stripe Payment Integration Stripe provides both client-side (Stripe.js) and server-side APIs. For PCI compliance, never pass raw card numbers through your server—use Stripe Elements or the Payment Intents API. Webhooks are essential for handling asynchronous events like payment succeeded or subscription renewed. Configure your webhook endpoint to verify signatures using the Stripe-Signature header. ## ShipStation Integration The ShipStation API is REST-based. Authentication uses API key and API secret in the Authorization header. Endpoints cover orders, shipments, carriers, and warehouses. Poll for new orders or use webhooks if available for your plan. Batch operations are supported for bulk label creation. ## Twilio SMS Integration Twilio's REST API requires Account SID and Auth Token. The Messaging API endpoint is /2010-04-01/Accounts/{AccountSid}/Messages.json. For two-way messaging, configure a webhook URL to receive incoming messages. Consider using a queue for high-volume outbound SMS to avoid rate limits. # PentaCodes Technical Reference and Integration Documentation # Version 1.0 | Last Updated March 2025 # This document contains technical reference material for common integrations and deployment procedures. ## QuickBooks Online Integration The QuickBooks Online API uses OAuth 2.0 for authentication. You will need to register your application in the Intuit Developer Portal to obtain client credentials. The base URL for the API is https://quickbooks.api.intuit.com/v3/company/{realmId}. Common endpoints include /invoice, /customer, /payment, and /bill. Rate limits apply: 500 requests per minute for production apps. Always implement exponential backoff for 429 responses. ## Stripe Payment Integration Stripe provides both client-side (Stripe.js) and server-side APIs. For PCI compliance, never pass raw card numbers through your server—use Stripe Elements or the Payment Intents API. Webhooks are essential for handling asynchronous events like payment succeeded or subscription renewed. Configure your webhook endpoint to verify signatures using the Stripe-Signature header. ## ShipStation Integration The ShipStation API is REST-based. Authentication uses API key and API secret in the Authorization header. Endpoints cover orders, shipments, carriers, and warehouses. Poll for new orders or use webhooks if available for your plan. Batch operations are supported for bulk label creation. ## Twilio SMS Integration Twilio's REST API requires Account SID and Auth Token. The Messaging API endpoint is /2010-04-01/Accounts/{AccountSid}/Messages.json. For two-way messaging, configure a webhook URL to receive incoming messages. Consider using a queue for high-volume outbound SMS to avoid rate limits. # PentaCodes Technical Reference and Integration Documentation # Version 1.0 | Last Updated March 2025 # This document contains technical reference material for common integrations and deployment procedures. ## QuickBooks Online Integration The QuickBooks Online API uses OAuth 2.0 for authentication. You will need to register your application in the Intuit Developer Portal to obtain client credentials. The base URL for the API is https://quickbooks.api.intuit.com/v3/company/{realmId}. Common endpoints include /invoice, /customer, /payment, and /bill. Rate limits apply: 500 requests per minute for production apps. Always implement exponential backoff for 429 responses. ## Stripe Payment Integration Stripe provides both client-side (Stripe.js) and server-side APIs. For PCI compliance, never pass raw card numbers through your server—use Stripe Elements or the Payment Intents API. Webhooks are essential for handling asynchronous events like payment succeeded or subscription renewed. Configure your webhook endpoint to verify signatures using the Stripe-Signature header. ## ShipStation Integration The ShipStation API is REST-based. Authentication uses API key and API secret in the Authorization header. Endpoints cover orders, shipments, carriers, and warehouses. Poll for new orders or use webhooks if available for your plan. Batch operations are supported for bulk label creation. ## Twilio SMS Integration Twilio's REST API requires Account SID and Auth Token. The Messaging API endpoint is /2010-04-01/Accounts/{AccountSid}/Messages.json. For two-way messaging, configure a webhook URL to receive incoming messages. Consider using a queue for high-volume outbound SMS to avoid rate limits. # PentaCodes Technical Reference and Integration Documentation # Version 1.0 | Last Updated March 2025 # This document contains technical reference material for common integrations and deployment procedures. ## QuickBooks Online Integration The QuickBooks Online API uses OAuth 2.0 for authentication. You will need to register your application in the Intuit Developer Portal to obtain client credentials. The base URL for the API is https://quickbooks.api.intuit.com/v3/company/{realmId}. Common endpoints include /invoice, /customer, /payment, and /bill. Rate limits apply: 500 requests per minute for production apps. Always implement exponential backoff for 429 responses. ## Stripe Payment Integration Stripe provides both client-side (Stripe.js) and server-side APIs. For PCI compliance, never pass raw card numbers through your server—use Stripe Elements or the Payment Intents API. Webhooks are essential for handling asynchronous events like payment succeeded or subscription renewed. Configure your webhook endpoint to verify signatures using the Stripe-Signature header. ## ShipStation Integration The ShipStation API is REST-based. Authentication uses API key and API secret in the Authorization header. Endpoints cover orders, shipments, carriers, and warehouses. Poll for new orders or use webhooks if available for your plan. Batch operations are supported for bulk label creation. ## Twilio SMS Integration Twilio's REST API requires Account SID and Auth Token. The Messaging API endpoint is /2010-04-01/Accounts/{AccountSid}/Messages.json. For two-way messaging, configure a webhook URL to receive incoming messages. Consider using a queue for high-volume outbound SMS to avoid rate limits. # PentaCodes Technical Reference and Integration Documentation # Version 1.0 | Last Updated March 2025 # This document contains technical reference material for common integrations and deployment procedures. ## QuickBooks Online Integration The QuickBooks Online API uses OAuth 2.0 for authentication. You will need to register your application in the Intuit Developer Portal to obtain client credentials. The base URL for the API is https://quickbooks.api.intuit.com/v3/company/{realmId}. Common endpoints include /invoice, /customer, /payment, and /bill. Rate limits apply: 500 requests per minute for production apps. Always implement exponential backoff for 429 responses. ## Stripe Payment Integration Stripe provides both client-side (Stripe.js) and server-side APIs. For PCI compliance, never pass raw card numbers through your server—use Stripe Elements or the Payment Intents API. Webhooks are essential for handling asynchronous events like payment succeeded or subscription renewed. Configure your webhook endpoint to verify signatures using the Stripe-Signature header. ## ShipStation Integration The ShipStation API is REST-based. Authentication uses API key and API secret in the Authorization header. Endpoints cover orders, shipments, carriers, and warehouses. Poll for new orders or use webhooks if available for your plan. Batch operations are supported for bulk label creation. ## Twilio SMS Integration Twilio's REST API requires Account SID and Auth Token. The Messaging API endpoint is /2010-04-01/Accounts/{AccountSid}/Messages.json. For two-way messaging, configure a webhook URL to receive incoming messages. Consider using a queue for high-volume outbound SMS to avoid rate limits. # PentaCodes Technical Reference and Integration Documentation # Version 1.0 | Last Updated March 2025 # This document contains technical reference material for common integrations and deployment procedures. ## QuickBooks Online Integration The QuickBooks Online API uses OAuth 2.0 for authentication. You will need to register your application in the Intuit Developer Portal to obtain client credentials. The base URL for the API is https://quickbooks.api.intuit.com/v3/company/{realmId}. Common endpoints include /invoice, /customer, /payment, and /bill. Rate limits apply: 500 requests per minute for production apps. Always implement exponential backoff for 429 responses. ## Stripe Payment Integration Stripe provides both client-side (Stripe.js) and server-side APIs. For PCI compliance, never pass raw card numbers through your server—use Stripe Elements or the Payment Intents API. Webhooks are essential for handling asynchronous events like payment succeeded or subscription renewed. Configure your webhook endpoint to verify signatures using the Stripe-Signature header. ## ShipStation Integration The ShipStation API is REST-based. Authentication uses API key and API secret in the Authorization header. Endpoints cover orders, shipments, carriers, and warehouses. Poll for new orders or use webhooks if available for your plan. Batch operations are supported for bulk label creation. ## Twilio SMS Integration Twilio's REST API requires Account SID and Auth Token. The Messaging API endpoint is /2010-04-01/Accounts/{AccountSid}/Messages.json. For two-way messaging, configure a webhook URL to receive incoming messages. Consider using a queue for high-volume outbound SMS to avoid rate limits. # PentaCodes Technical Reference and Integration Documentation # Version 1.0 | Last Updated March 2025 # This document contains technical reference material for common integrations and deployment procedures. ## QuickBooks Online Integration The QuickBooks Online API uses OAuth 2.0 for authentication. You will need to register your application in the Intuit Developer Portal to obtain client credentials. The base URL for the API is https://quickbooks.api.intuit.com/v3/company/{realmId}. Common endpoints include /invoice, /customer, /payment, and /bill. Rate limits apply: 500 requests per minute for production apps. Always implement exponential backoff for 429 responses. ## Stripe Payment Integration Stripe provides both client-side (Stripe.js) and server-side APIs. For PCI compliance, never pass raw card numbers through your server—use Stripe Elements or the Payment Intents API. Webhooks are essential for handling asynchronous events like payment succeeded or subscription renewed. Configure your webhook endpoint to verify signatures using the Stripe-Signature header. ## ShipStation Integration The ShipStation API is REST-based. Authentication uses API key and API secret in the Authorization header. Endpoints cover orders, shipments, carriers, and warehouses. Poll for new orders or use webhooks if available for your plan. Batch operations are supported for bulk label creation. ## Twilio SMS Integration Twilio's REST API requires Account SID and Auth Token. The Messaging API endpoint is /2010-04-01/Accounts/{AccountSid}/Messages.json. For two-way messaging, configure a webhook URL to receive incoming messages. Consider using a queue for high-volume outbound SMS to avoid rate limits. # PentaCodes Technical Reference and Integration Documentation # Version 1.0 | Last Updated March 2025 # This document contains technical reference material for common integrations and deployment procedures. ## QuickBooks Online Integration The QuickBooks Online API uses OAuth 2.0 for authentication. You will need to register your application in the Intuit Developer Portal to obtain client credentials. The base URL for the API is https://quickbooks.api.intuit.com/v3/company/{realmId}. Common endpoints include /invoice, /customer, /payment, and /bill. Rate limits apply: 500 requests per minute for production apps. Always implement exponential backoff for 429 responses. ## Stripe Payment Integration Stripe provides both client-side (Stripe.js) and server-side APIs. For PCI compliance, never pass raw card numbers through your server—use Stripe Elements or the Payment Intents API. Webhooks are essential for handling asynchronous events like payment succeeded or subscription renewed. Configure your webhook endpoint to verify signatures using the Stripe-Signature header. ## ShipStation Integration The ShipStation API is REST-based. Authentication uses API key and API secret in the Authorization header. Endpoints cover orders, shipments, carriers, and warehouses. Poll for new orders or use webhooks if available for your plan. Batch operations are supported for bulk label creation. ## Twilio SMS Integration Twilio's REST API requires Account SID and Auth Token. The Messaging API endpoint is /2010-04-01/Accounts/{AccountSid}/Messages.json. For two-way messaging, configure a webhook URL to receive incoming messages. Consider using a queue for high-volume outbound SMS to avoid rate limits. # PentaCodes Technical Reference and Integration Documentation # Version 1.0 | Last Updated March 2025 # This document contains technical reference material for common integrations and deployment procedures. ## QuickBooks Online Integration The QuickBooks Online API uses OAuth 2.0 for authentication. You will need to register your application in the Intuit Developer Portal to obtain client credentials. The base URL for the API is https://quickbooks.api.intuit.com/v3/company/{realmId}. Common endpoints include /invoice, /customer, /payment, and /bill. Rate limits apply: 500 requests per minute for production apps. Always implement exponential backoff for 429 responses. ## Stripe Payment Integration Stripe provides both client-side (Stripe.js) and server-side APIs. For PCI compliance, never pass raw card numbers through your server—use Stripe Elements or the Payment Intents API. Webhooks are essential for handling asynchronous events like payment succeeded or subscription renewed. Configure your webhook endpoint to verify signatures using the Stripe-Signature header. ## ShipStation Integration The ShipStation API is REST-based. Authentication uses API key and API secret in the Authorization header. Endpoints cover orders, shipments, carriers, and warehouses. Poll for new orders or use webhooks if available for your plan. Batch operations are supported for bulk label creation. ## Twilio SMS Integration Twilio's REST API requires Account SID and Auth Token. The Messaging API endpoint is /2010-04-01/Accounts/{AccountSid}/Messages.json. For two-way messaging, configure a webhook URL to receive incoming messages. Consider using a queue for high-volume outbound SMS to avoid rate limits. # PentaCodes Technical Reference and Integration Documentation # Version 1.0 | Last Updated March 2025 # This document contains technical reference material for common integrations and deployment procedures. ## QuickBooks Online Integration The QuickBooks Online API uses OAuth 2.0 for authentication. You will need to register your application in the Intuit Developer Portal to obtain client credentials. The base URL for the API is https://quickbooks.api.intuit.com/v3/company/{realmId}. Common endpoints include /invoice, /customer, /payment, and /bill. Rate limits apply: 500 requests per minute for production apps. Always implement exponential backoff for 429 responses. ## Stripe Payment Integration Stripe provides both client-side (Stripe.js) and server-side APIs. For PCI compliance, never pass raw card numbers through your server—use Stripe Elements or the Payment Intents API. Webhooks are essential for handling asynchronous events like payment succeeded or subscription renewed. Configure your webhook endpoint to verify signatures using the Stripe-Signature header. ## ShipStation Integration The ShipStation API is REST-based. Authentication uses API key and API secret in the Authorization header. Endpoints cover orders, shipments, carriers, and warehouses. Poll for new orders or use webhooks if available for your plan. Batch operations are supported for bulk label creation. ## Twilio SMS Integration Twilio's REST API requires Account SID and Auth Token. The Messaging API endpoint is /2010-04-01/Accounts/{AccountSid}/Messages.json. For two-way messaging, configure a webhook URL to receive incoming messages. Consider using a queue for high-volume outbound SMS to avoid rate limits. # PentaCodes Technical Reference and Integration Documentation # Version 1.0 | Last Updated March 2025 # This document contains technical reference material for common integrations and deployment procedures. ## QuickBooks Online Integration The QuickBooks Online API uses OAuth 2.0 for authentication. You will need to register your application in the Intuit Developer Portal to obtain client credentials. The base URL for the API is https://quickbooks.api.intuit.com/v3/company/{realmId}. Common endpoints include /invoice, /customer, /payment, and /bill. Rate limits apply: 500 requests per minute for production apps. Always implement exponential backoff for 429 responses. ## Stripe Payment Integration Stripe provides both client-side (Stripe.js) and server-side APIs. For PCI compliance, never pass raw card numbers through your server—use Stripe Elements or the Payment Intents API. Webhooks are essential for handling asynchronous events like payment succeeded or subscription renewed. Configure your webhook endpoint to verify signatures using the Stripe-Signature header. ## ShipStation Integration The ShipStation API is REST-based. Authentication uses API key and API secret in the Authorization header. Endpoints cover orders, shipments, carriers, and warehouses. Poll for new orders or use webhooks if available for your plan. Batch operations are supported for bulk label creation. ## Twilio SMS Integration Twilio's REST API requires Account SID and Auth Token. The Messaging API endpoint is /2010-04-01/Accounts/{AccountSid}/Messages.json. For two-way messaging, configure a webhook URL to receive incoming messages. Consider using a queue for high-volume outbound SMS to avoid rate limits. # PentaCodes Technical Reference and Integration Documentation # Version 1.0 | Last Updated March 2025 # This document contains technical reference material for common integrations and deployment procedures. ## QuickBooks Online Integration The QuickBooks Online API uses OAuth 2.0 for authentication. You will need to register your application in the Intuit Developer Portal to obtain client credentials. The base URL for the API is https://quickbooks.api.intuit.com/v3/company/{realmId}. Common endpoints include /invoice, /customer, /payment, and /bill. Rate limits apply: 500 requests per minute for production apps. Always implement exponential backoff for 429 responses. ## Stripe Payment Integration Stripe provides both client-side (Stripe.js) and server-side APIs. For PCI compliance, never pass raw card numbers through your server—use Stripe Elements or the Payment Intents API. Webhooks are essential for handling asynchronous events like payment succeeded or subscription renewed. Configure your webhook endpoint to verify signatures using the Stripe-Signature header. ## ShipStation Integration The ShipStation API is REST-based. Authentication uses API key and API secret in the Authorization header. Endpoints cover orders, shipments, carriers, and warehouses. Poll for new orders or use webhooks if available for your plan. Batch operations are supported for bulk label creation. ## Twilio SMS Integration Twilio's REST API requires Account SID and Auth Token. The Messaging API endpoint is /2010-04-01/Accounts/{AccountSid}/Messages.json. For two-way messaging, configure a webhook URL to receive incoming messages. Consider using a queue for high-volume outbound SMS to avoid rate limits. # PentaCodes Technical Reference and Integration Documentation # Version 1.0 | Last Updated March 2025 # This document contains technical reference material for common integrations and deployment procedures. ## QuickBooks Online Integration The QuickBooks Online API uses OAuth 2.0 for authentication. You will need to register your application in the Intuit Developer Portal to obtain client credentials. The base URL for the API is https://quickbooks.api.intuit.com/v3/company/{realmId}. Common endpoints include /invoice, /customer, /payment, and /bill. Rate limits apply: 500 requests per minute for production apps. Always implement exponential backoff for 429 responses. ## Stripe Payment Integration Stripe provides both client-side (Stripe.js) and server-side APIs. For PCI compliance, never pass raw card numbers through your server—use Stripe Elements or the Payment Intents API. Webhooks are essential for handling asynchronous events like payment succeeded or subscription renewed. Configure your webhook endpoint to verify signatures using the Stripe-Signature header. ## ShipStation Integration The ShipStation API is REST-based. Authentication uses API key and API secret in the Authorization header. Endpoints cover orders, shipments, carriers, and warehouses. Poll for new orders or use webhooks if available for your plan. Batch operations are supported for bulk label creation. ## Twilio SMS Integration Twilio's REST API requires Account SID and Auth Token. The Messaging API endpoint is /2010-04-01/Accounts/{AccountSid}/Messages.json. For two-way messaging, configure a webhook URL to receive incoming messages. Consider using a queue for high-volume outbound SMS to avoid rate limits. # PentaCodes Technical Reference and Integration Documentation # Version 1.0 | Last Updated March 2025 # This document contains technical reference material for common integrations and deployment procedures. ## QuickBooks Online Integration The QuickBooks Online API uses OAuth 2.0 for authentication. You will need to register your application in the Intuit Developer Portal to obtain client credentials. The base URL for the API is https://quickbooks.api.intuit.com/v3/company/{realmId}. Common endpoints include /invoice, /customer, /payment, and /bill. Rate limits apply: 500 requests per minute for production apps. Always implement exponential backoff for 429 responses. ## Stripe Payment Integration Stripe provides both client-side (Stripe.js) and server-side APIs. For PCI compliance, never pass raw card numbers through your server—use Stripe Elements or the Payment Intents API. Webhooks are essential for handling asynchronous events like payment succeeded or subscription renewed. Configure your webhook endpoint to verify signatures using the Stripe-Signature header. ## ShipStation Integration The ShipStation API is REST-based. Authentication uses API key and API secret in the Authorization header. Endpoints cover orders, shipments, carriers, and warehouses. Poll for new orders or use webhooks if available for your plan. Batch operations are supported for bulk label creation. ## Twilio SMS Integration Twilio's REST API requires Account SID and Auth Token. The Messaging API endpoint is /2010-04-01/Accounts/{AccountSid}/Messages.json. For two-way messaging, configure a webhook URL to receive incoming messages. Consider using a queue for high-volume outbound SMS to avoid rate limits. # PentaCodes Technical Reference and Integration Documentation # Version 1.0 | Last Updated March 2025 # This document contains technical reference material for common integrations and deployment procedures. ## QuickBooks Online Integration The QuickBooks Online API uses OAuth 2.0 for authentication. You will need to register your application in the Intuit Developer Portal to obtain client credentials. The base URL for the API is https://quickbooks.api.intuit.com/v3/company/{realmId}. Common endpoints include /invoice, /customer, /payment, and /bill. Rate limits apply: 500 requests per minute for production apps. Always implement exponential backoff for 429 responses. ## Stripe Payment Integration Stripe provides both client-side (Stripe.js) and server-side APIs. For PCI compliance, never pass raw card numbers through your server—use Stripe Elements or the Payment Intents API. Webhooks are essential for handling asynchronous events like payment succeeded or subscription renewed. Configure your webhook endpoint to verify signatures using the Stripe-Signature header. ## ShipStation Integration The ShipStation API is REST-based. Authentication uses API key and API secret in the Authorization header. Endpoints cover orders, shipments, carriers, and warehouses. Poll for new orders or use webhooks if available for your plan. Batch operations are supported for bulk label creation. ## Twilio SMS Integration Twilio's REST API requires Account SID and Auth Token. The Messaging API endpoint is /2010-04-01/Accounts/{AccountSid}/Messages.json. For two-way messaging, configure a webhook URL to receive incoming messages. Consider using a queue for high-volume outbound SMS to avoid rate limits. # PentaCodes Technical Reference and Integration Documentation # Version 1.0 | Last Updated March 2025 # This document contains technical reference material for common integrations and deployment procedures. ## QuickBooks Online Integration The QuickBooks Online API uses OAuth 2.0 for authentication. You will need to register your application in the Intuit Developer Portal to obtain client credentials. The base URL for the API is https://quickbooks.api.intuit.com/v3/company/{realmId}. Common endpoints include /invoice, /customer, /payment, and /bill. Rate limits apply: 500 requests per minute for production apps. Always implement exponential backoff for 429 responses. ## Stripe Payment Integration Stripe provides both client-side (Stripe.js) and server-side APIs. For PCI compliance, never pass raw card numbers through your server—use Stripe Elements or the Payment Intents API. Webhooks are essential for handling asynchronous events like payment succeeded or subscription renewed. Configure your webhook endpoint to verify signatures using the Stripe-Signature header. ## ShipStation Integration The ShipStation API is REST-based. Authentication uses API key and API secret in the Authorization header. Endpoints cover orders, shipments, carriers, and warehouses. Poll for new orders or use webhooks if available for your plan. Batch operations are supported for bulk label creation. ## Twilio SMS Integration Twilio's REST API requires Account SID and Auth Token. The Messaging API endpoint is /2010-04-01/Accounts/{AccountSid}/Messages.json. For two-way messaging, configure a webhook URL to receive incoming messages. Consider using a queue for high-volume outbound SMS to avoid rate limits. # PentaCodes Technical Reference and Integration Documentation # Version 1.0 | Last Updated March 2025 # This document contains technical reference material for common integrations and deployment procedures. ## QuickBooks Online Integration The QuickBooks Online API uses OAuth 2.0 for authentication. You will need to register your application in the Intuit Developer Portal to obtain client credentials. The base URL for the API is https://quickbooks.api.intuit.com/v3/company/{realmId}. Common endpoints include /invoice, /customer, /payment, and /bill. Rate limits apply: 500 requests per minute for production apps. Always implement exponential backoff for 429 responses. ## Stripe Payment Integration Stripe provides both client-side (Stripe.js) and server-side APIs. For PCI compliance, never pass raw card numbers through your server—use Stripe Elements or the Payment Intents API. Webhooks are essential for handling asynchronous events like payment succeeded or subscription renewed. Configure your webhook endpoint to verify signatures using the Stripe-Signature header. ## ShipStation Integration The ShipStation API is REST-based. Authentication uses API key and API secret in the Authorization header. Endpoints cover orders, shipments, carriers, and warehouses. Poll for new orders or use webhooks if available for your plan. Batch operations are supported for bulk label creation. ## Twilio SMS Integration Twilio's REST API requires Account SID and Auth Token. The Messaging API endpoint is /2010-04-01/Accounts/{AccountSid}/Messages.json. For two-way messaging, configure a webhook URL to receive incoming messages. Consider using a queue for high-volume outbound SMS to avoid rate limits. # PentaCodes Technical Reference and Integration Documentation # Version 1.0 | Last Updated March 2025 # This document contains technical reference material for common integrations and deployment procedures. ## QuickBooks Online Integration The QuickBooks Online API uses OAuth 2.0 for authentication. You will need to register your application in the Intuit Developer Portal to obtain client credentials. The base URL for the API is https://quickbooks.api.intuit.com/v3/company/{realmId}. Common endpoints include /invoice, /customer, /payment, and /bill. Rate limits apply: 500 requests per minute for production apps. Always implement exponential backoff for 429 responses. ## Stripe Payment Integration Stripe provides both client-side (Stripe.js) and server-side APIs. For PCI compliance, never pass raw card numbers through your server—use Stripe Elements or the Payment Intents API. Webhooks are essential for handling asynchronous events like payment succeeded or subscription renewed. Configure your webhook endpoint to verify signatures using the Stripe-Signature header. ## ShipStation Integration The ShipStation API is REST-based. Authentication uses API key and API secret in the Authorization header. Endpoints cover orders, shipments, carriers, and warehouses. Poll for new orders or use webhooks if available for your plan. Batch operations are supported for bulk label creation. ## Twilio SMS Integration Twilio's REST API requires Account SID and Auth Token. The Messaging API endpoint is /2010-04-01/Accounts/{AccountSid}/Messages.json. For two-way messaging, configure a webhook URL to receive incoming messages. Consider using a queue for high-volume outbound SMS to avoid rate limits. # PentaCodes Technical Reference and Integration Documentation # Version 1.0 | Last Updated March 2025 # This document contains technical reference material for common integrations and deployment procedures. ## QuickBooks Online Integration The QuickBooks Online API uses OAuth 2.0 for authentication. You will need to register your application in the Intuit Developer Portal to obtain client credentials. The base URL for the API is https://quickbooks.api.intuit.com/v3/company/{realmId}. Common endpoints include /invoice, /customer, /payment, and /bill. Rate limits apply: 500 requests per minute for production apps. Always implement exponential backoff for 429 responses. ## Stripe Payment Integration Stripe provides both client-side (Stripe.js) and server-side APIs. For PCI compliance, never pass raw card numbers through your server—use Stripe Elements or the Payment Intents API. Webhooks are essential for handling asynchronous events like payment succeeded or subscription renewed. Configure your webhook endpoint to verify signatures using the Stripe-Signature header. ## ShipStation Integration The ShipStation API is REST-based. Authentication uses API key and API secret in the Authorization header. Endpoints cover orders, shipments, carriers, and warehouses. Poll for new orders or use webhooks if available for your plan. Batch operations are supported for bulk label creation. ## Twilio SMS Integration Twilio's REST API requires Account SID and Auth Token. The Messaging API endpoint is /2010-04-01/Accounts/{AccountSid}/Messages.json. For two-way messaging, configure a webhook URL to receive incoming messages. Consider using a queue for high-volume outbound SMS to avoid rate limits. # PentaCodes Technical Reference and Integration Documentation # Version 1.0 | Last Updated March 2025 # This document contains technical reference material for common integrations and deployment procedures. ## QuickBooks Online Integration The QuickBooks Online API uses OAuth 2.0 for authentication. You will need to register your application in the Intuit Developer Portal to obtain client credentials. The base URL for the API is https://quickbooks.api.intuit.com/v3/company/{realmId}. Common endpoints include /invoice, /customer, /payment, and /bill. Rate limits apply: 500 requests per minute for production apps. Always implement exponential backoff for 429 responses. ## Stripe Payment Integration Stripe provides both client-side (Stripe.js) and server-side APIs. For PCI compliance, never pass raw card numbers through your server—use Stripe Elements or the Payment Intents API. Webhooks are essential for handling asynchronous events like payment succeeded or subscription renewed. Configure your webhook endpoint to verify signatures using the Stripe-Signature header. ## ShipStation Integration The ShipStation API is REST-based. Authentication uses API key and API secret in the Authorization header. Endpoints cover orders, shipments, carriers, and warehouses. Poll for new orders or use webhooks if available for your plan. Batch operations are supported for bulk label creation. ## Twilio SMS Integration Twilio's REST API requires Account SID and Auth Token. The Messaging API endpoint is /2010-04-01/Accounts/{AccountSid}/Messages.json. For two-way messaging, configure a webhook URL to receive incoming messages. Consider using a queue for high-volume outbound SMS to avoid rate limits. # PentaCodes Technical Reference and Integration Documentation # Version 1.0 | Last Updated March 2025 # This document contains technical reference material for common integrations and deployment procedures. ## QuickBooks Online Integration The QuickBooks Online API uses OAuth 2.0 for authentication. You will need to register your application in the Intuit Developer Portal to obtain client credentials. The base URL for the API is https://quickbooks.api.intuit.com/v3/company/{realmId}. Common endpoints include /invoice, /customer, /payment, and /bill. Rate limits apply: 500 requests per minute for production apps. Always implement exponential backoff for 429 responses. ## Stripe Payment Integration Stripe provides both client-side (Stripe.js) and server-side APIs. For PCI compliance, never pass raw card numbers through your server—use Stripe Elements or the Payment Intents API. Webhooks are essential for handling asynchronous events like payment succeeded or subscription renewed. Configure your webhook endpoint to verify signatures using the Stripe-Signature header. ## ShipStation Integration The ShipStation API is REST-based. Authentication uses API key and API secret in the Authorization header. Endpoints cover orders, shipments, carriers, and warehouses. Poll for new orders or use webhooks if available for your plan. Batch operations are supported for bulk label creation. ## Twilio SMS Integration Twilio's REST API requires Account SID and Auth Token. The Messaging API endpoint is /2010-04-01/Accounts/{AccountSid}/Messages.json. For two-way messaging, configure a webhook URL to receive incoming messages. Consider using a queue for high-volume outbound SMS to avoid rate limits. # PentaCodes Technical Reference and Integration Documentation # Version 1.0 | Last Updated March 2025 # This document contains technical reference material for common integrations and deployment procedures. ## QuickBooks Online Integration The QuickBooks Online API uses OAuth 2.0 for authentication. You will need to register your application in the Intuit Developer Portal to obtain client credentials. The base URL for the API is https://quickbooks.api.intuit.com/v3/company/{realmId}. Common endpoints include /invoice, /customer, /payment, and /bill. Rate limits apply: 500 requests per minute for production apps. Always implement exponential backoff for 429 responses. ## Stripe Payment Integration Stripe provides both client-side (Stripe.js) and server-side APIs. For PCI compliance, never pass raw card numbers through your server—use Stripe Elements or the Payment Intents API. Webhooks are essential for handling asynchronous events like payment succeeded or subscription renewed. Configure your webhook endpoint to verify signatures using the Stripe-Signature header. ## ShipStation Integration The ShipStation API is REST-based. Authentication uses API key and API secret in the Authorization header. Endpoints cover orders, shipments, carriers, and warehouses. Poll for new orders or use webhooks if available for your plan. Batch operations are supported for bulk label creation. ## Twilio SMS Integration Twilio's REST API requires Account SID and Auth Token. The Messaging API endpoint is /2010-04-01/Accounts/{AccountSid}/Messages.json. For two-way messaging, configure a webhook URL to receive incoming messages. Consider using a queue for high-volume outbound SMS to avoid rate limits. # PentaCodes Technical Reference and Integration Documentation # Version 1.0 | Last Updated March 2025 # This document contains technical reference material for common integrations and deployment procedures. ## QuickBooks Online Integration The QuickBooks Online API uses OAuth 2.0 for authentication. You will need to register your application in the Intuit Developer Portal to obtain client credentials. The base URL for the API is https://quickbooks.api.intuit.com/v3/company/{realmId}. Common endpoints include /invoice, /customer, /payment, and /bill. Rate limits apply: 500 requests per minute for production apps. Always implement exponential backoff for 429 responses. ## Stripe Payment Integration Stripe provides both client-side (Stripe.js) and server-side APIs. For PCI compliance, never pass raw card numbers through your server—use Stripe Elements or the Payment Intents API. Webhooks are essential for handling asynchronous events like payment succeeded or subscription renewed. Configure your webhook endpoint to verify signatures using the Stripe-Signature header. ## ShipStation Integration The ShipStation API is REST-based. Authentication uses API key and API secret in the Authorization header. Endpoints cover orders, shipments, carriers, and warehouses. Poll for new orders or use webhooks if available for your plan. Batch operations are supported for bulk label creation. ## Twilio SMS Integration Twilio's REST API requires Account SID and Auth Token. The Messaging API endpoint is /2010-04-01/Accounts/{AccountSid}/Messages.json. For two-way messaging, configure a webhook URL to receive incoming messages. Consider using a queue for high-volume outbound SMS to avoid rate limits. # PentaCodes Technical Reference and Integration Documentation # Version 1.0 | Last Updated March 2025 # This document contains technical reference material for common integrations and deployment procedures. ## QuickBooks Online Integration The QuickBooks Online API uses OAuth 2.0 for authentication. You will need to register your application in the Intuit Developer Portal to obtain client credentials. The base URL for the API is https://quickbooks.api.intuit.com/v3/company/{realmId}. Common endpoints include /invoice, /customer, /payment, and /bill. Rate limits apply: 500 requests per minute for production apps. Always implement exponential backoff for 429 responses. ## Stripe Payment Integration Stripe provides both client-side (Stripe.js) and server-side APIs. For PCI compliance, never pass raw card numbers through your server—use Stripe Elements or the Payment Intents API. Webhooks are essential for handling asynchronous events like payment succeeded or subscription renewed. Configure your webhook endpoint to verify signatures using the Stripe-Signature header. ## ShipStation Integration The ShipStation API is REST-based. Authentication uses API key and API secret in the Authorization header. Endpoints cover orders, shipments, carriers, and warehouses. Poll for new orders or use webhooks if available for your plan. Batch operations are supported for bulk label creation. ## Twilio SMS Integration Twilio's REST API requires Account SID and Auth Token. The Messaging API endpoint is /2010-04-01/Accounts/{AccountSid}/Messages.json. For two-way messaging, configure a webhook URL to receive incoming messages. Consider using a queue for high-volume outbound SMS to avoid rate limits. # PentaCodes Technical Reference and Integration Documentation # Version 1.0 | Last Updated March 2025 # This document contains technical reference material for common integrations and deployment procedures. ## QuickBooks Online Integration The QuickBooks Online API uses OAuth 2.0 for authentication. You will need to register your application in the Intuit Developer Portal to obtain client credentials. The base URL for the API is https://quickbooks.api.intuit.com/v3/company/{realmId}. Common endpoints include /invoice, /customer, /payment, and /bill. Rate limits apply: 500 requests per minute for production apps. Always implement exponential backoff for 429 responses. ## Stripe Payment Integration Stripe provides both client-side (Stripe.js) and server-side APIs. For PCI compliance, never pass raw card numbers through your server—use Stripe Elements or the Payment Intents API. Webhooks are essential for handling asynchronous events like payment succeeded or subscription renewed. Configure your webhook endpoint to verify signatures using the Stripe-Signature header. ## ShipStation Integration The ShipStation API is REST-based. Authentication uses API key and API secret in the Authorization header. Endpoints cover orders, shipments, carriers, and warehouses. Poll for new orders or use webhooks if available for your plan. Batch operations are supported for bulk label creation. ## Twilio SMS Integration Twilio's REST API requires Account SID and Auth Token. The Messaging API endpoint is /2010-04-01/Accounts/{AccountSid}/Messages.json. For two-way messaging, configure a webhook URL to receive incoming messages. Consider using a queue for high-volume outbound SMS to avoid rate limits. # PentaCodes Technical Reference and Integration Documentation # Version 1.0 | Last Updated March 2025 # This document contains technical reference material for common integrations and deployment procedures. ## QuickBooks Online Integration The QuickBooks Online API uses OAuth 2.0 for authentication. You will need to register your application in the Intuit Developer Portal to obtain client credentials. The base URL for the API is https://quickbooks.api.intuit.com/v3/company/{realmId}. Common endpoints include /invoice, /customer, /payment, and /bill. Rate limits apply: 500 requests per minute for production apps. Always implement exponential backoff for 429 responses. ## Stripe Payment Integration Stripe provides both client-side (Stripe.js) and server-side APIs. For PCI compliance, never pass raw card numbers through your server—use Stripe Elements or the Payment Intents API. Webhooks are essential for handling asynchronous events like payment succeeded or subscription renewed. Configure your webhook endpoint to verify signatures using the Stripe-Signature header. ## ShipStation Integration The ShipStation API is REST-based. Authentication uses API key and API secret in the Authorization header. Endpoints cover orders, shipments, carriers, and warehouses. Poll for new orders or use webhooks if available for your plan. Batch operations are supported for bulk label creation. ## Twilio SMS Integration Twilio's REST API requires Account SID and Auth Token. The Messaging API endpoint is /2010-04-01/Accounts/{AccountSid}/Messages.json. For two-way messaging, configure a webhook URL to receive incoming messages. Consider using a queue for high-volume outbound SMS to avoid rate limits. # PentaCodes Technical Reference and Integration Documentation # Version 1.0 | Last Updated March 2025 # This document contains technical reference material for common integrations and deployment procedures. ## QuickBooks Online Integration The QuickBooks Online API uses OAuth 2.0 for authentication. You will need to register your application in the Intuit Developer Portal to obtain client credentials. The base URL for the API is https://quickbooks.api.intuit.com/v3/company/{realmId}. Common endpoints include /invoice, /customer, /payment, and /bill. Rate limits apply: 500 requests per minute for production apps. Always implement exponential backoff for 429 responses. ## Stripe Payment Integration Stripe provides both client-side (Stripe.js) and server-side APIs. For PCI compliance, never pass raw card numbers through your server—use Stripe Elements or the Payment Intents API. Webhooks are essential for handling asynchronous events like payment succeeded or subscription renewed. Configure your webhook endpoint to verify signatures using the Stripe-Signature header. ## ShipStation Integration The ShipStation API is REST-based. Authentication uses API key and API secret in the Authorization header. Endpoints cover orders, shipments, carriers, and warehouses. Poll for new orders or use webhooks if available for your plan. Batch operations are supported for bulk label creation. ## Twilio SMS Integration Twilio's REST API requires Account SID and Auth Token. The Messaging API endpoint is /2010-04-01/Accounts/{AccountSid}/Messages.json. For two-way messaging, configure a webhook URL to receive incoming messages. Consider using a queue for high-volume outbound SMS to avoid rate limits. # PentaCodes Technical Reference and Integration Documentation # Version 1.0 | Last Updated March 2025 # This document contains technical reference material for common integrations and deployment procedures. ## QuickBooks Online Integration The QuickBooks Online API uses OAuth 2.0 for authentication. You will need to register your application in the Intuit Developer Portal to obtain client credentials. The base URL for the API is https://quickbooks.api.intuit.com/v3/company/{realmId}. Common endpoints include /invoice, /customer, /payment, and /bill. Rate limits apply: 500 requests per minute for production apps. Always implement exponential backoff for 429 responses. ## Stripe Payment Integration Stripe provides both client-side (Stripe.js) and server-side APIs. For PCI compliance, never pass raw card numbers through your server—use Stripe Elements or the Payment Intents API. Webhooks are essential for handling asynchronous events like payment succeeded or subscription renewed. Configure your webhook endpoint to verify signatures using the Stripe-Signature header. ## ShipStation Integration The ShipStation API is REST-based. Authentication uses API key and API secret in the Authorization header. Endpoints cover orders, shipments, carriers, and warehouses. Poll for new orders or use webhooks if available for your plan. Batch operations are supported for bulk label creation. ## Twilio SMS Integration Twilio's REST API requires Account SID and Auth Token. The Messaging API endpoint is /2010-04-01/Accounts/{AccountSid}/Messages.json. For two-way messaging, configure a webhook URL to receive incoming messages. Consider using a queue for high-volume outbound SMS to avoid rate limits. # PentaCodes Technical Reference and Integration Documentation # Version 1.0 | Last Updated March 2025 # This document contains technical reference material for common integrations and deployment procedures. ## QuickBooks Online Integration The QuickBooks Online API uses OAuth 2.0 for authentication. You will need to register your application in the Intuit Developer Portal to obtain client credentials. The base URL for the API is https://quickbooks.api.intuit.com/v3/company/{realmId}. Common endpoints include /invoice, /customer, /payment, and /bill. Rate limits apply: 500 requests per minute for production apps. Always implement exponential backoff for 429 responses. ## Stripe Payment Integration Stripe provides both client-side (Stripe.js) and server-side APIs. For PCI compliance, never pass raw card numbers through your server—use Stripe Elements or the Payment Intents API. Webhooks are essential for handling asynchronous events like payment succeeded or subscription renewed. Configure your webhook endpoint to verify signatures using the Stripe-Signature header. ## ShipStation Integration The ShipStation API is REST-based. Authentication uses API key and API secret in the Authorization header. Endpoints cover orders, shipments, carriers, and warehouses. Poll for new orders or use webhooks if available for your plan. Batch operations are supported for bulk label creation. ## Twilio SMS Integration Twilio's REST API requires Account SID and Auth Token. The Messaging API endpoint is /2010-04-01/Accounts/{AccountSid}/Messages.json. For two-way messaging, configure a webhook URL to receive incoming messages. Consider using a queue for high-volume outbound SMS to avoid rate limits. # PentaCodes Technical Reference and Integration Documentation # Version 1.0 | Last Updated March 2025 # This document contains technical reference material for common integrations and deployment procedures. ## QuickBooks Online Integration The QuickBooks Online API uses OAuth 2.0 for authentication. You will need to register your application in the Intuit Developer Portal to obtain client credentials. The base URL for the API is https://quickbooks.api.intuit.com/v3/company/{realmId}. Common endpoints include /invoice, /customer, /payment, and /bill. Rate limits apply: 500 requests per minute for production apps. Always implement exponential backoff for 429 responses. ## Stripe Payment Integration Stripe provides both client-side (Stripe.js) and server-side APIs. For PCI compliance, never pass raw card numbers through your server—use Stripe Elements or the Payment Intents API. Webhooks are essential for handling asynchronous events like payment succeeded or subscription renewed. Configure your webhook endpoint to verify signatures using the Stripe-Signature header. ## ShipStation Integration The ShipStation API is REST-based. Authentication uses API key and API secret in the Authorization header. Endpoints cover orders, shipments, carriers, and warehouses. Poll for new orders or use webhooks if available for your plan. Batch operations are supported for bulk label creation. ## Twilio SMS Integration Twilio's REST API requires Account SID and Auth Token. The Messaging API endpoint is /2010-04-01/Accounts/{AccountSid}/Messages.json. For two-way messaging, configure a webhook URL to receive incoming messages. Consider using a queue for high-volume outbound SMS to avoid rate limits. # PentaCodes Technical Reference and Integration Documentation # Version 1.0 | Last Updated March 2025 # This document contains technical reference material for common integrations and deployment procedures. ## QuickBooks Online Integration The QuickBooks Online API uses OAuth 2.0 for authentication. You will need to register your application in the Intuit Developer Portal to obtain client credentials. The base URL for the API is https://quickbooks.api.intuit.com/v3/company/{realmId}. Common endpoints include /invoice, /customer, /payment, and /bill. Rate limits apply: 500 requests per minute for production apps. Always implement exponential backoff for 429 responses. ## Stripe Payment Integration Stripe provides both client-side (Stripe.js) and server-side APIs. For PCI compliance, never pass raw card numbers through your server—use Stripe Elements or the Payment Intents API. Webhooks are essential for handling asynchronous events like payment succeeded or subscription renewed. Configure your webhook endpoint to verify signatures using the Stripe-Signature header. ## ShipStation Integration The ShipStation API is REST-based. Authentication uses API key and API secret in the Authorization header. Endpoints cover orders, shipments, carriers, and warehouses. Poll for new orders or use webhooks if available for your plan. Batch operations are supported for bulk label creation. ## Twilio SMS Integration Twilio's REST API requires Account SID and Auth Token. The Messaging API endpoint is /2010-04-01/Accounts/{AccountSid}/Messages.json. For two-way messaging, configure a webhook URL to receive incoming messages. Consider using a queue for high-volume outbound SMS to avoid rate limits. # PentaCodes Technical Reference and Integration Documentation # Version 1.0 | Last Updated March 2025 # This document contains technical reference material for common integrations and deployment procedures. ## QuickBooks Online Integration The QuickBooks Online API uses OAuth 2.0 for authentication. You will need to register your application in the Intuit Developer Portal to obtain client credentials. The base URL for the API is https://quickbooks.api.intuit.com/v3/company/{realmId}. Common endpoints include /invoice, /customer, /payment, and /bill. Rate limits apply: 500 requests per minute for production apps. Always implement exponential backoff for 429 responses. ## Stripe Payment Integration Stripe provides both client-side (Stripe.js) and server-side APIs. For PCI compliance, never pass raw card numbers through your server—use Stripe Elements or the Payment Intents API. Webhooks are essential for handling asynchronous events like payment succeeded or subscription renewed. Configure your webhook endpoint to verify signatures using the Stripe-Signature header. ## ShipStation Integration The ShipStation API is REST-based. Authentication uses API key and API secret in the Authorization header. Endpoints cover orders, shipments, carriers, and warehouses. Poll for new orders or use webhooks if available for your plan. Batch operations are supported for bulk label creation. ## Twilio SMS Integration Twilio's REST API requires Account SID and Auth Token. The Messaging API endpoint is /2010-04-01/Accounts/{AccountSid}/Messages.json. For two-way messaging, configure a webhook URL to receive incoming messages. Consider using a queue for high-volume outbound SMS to avoid rate limits. # PentaCodes Technical Reference and Integration Documentation # Version 1.0 | Last Updated March 2025 # This document contains technical reference material for common integrations and deployment procedures. ## QuickBooks Online Integration The QuickBooks Online API uses OAuth 2.0 for authentication. You will need to register your application in the Intuit Developer Portal to obtain client credentials. The base URL for the API is https://quickbooks.api.intuit.com/v3/company/{realmId}. Common endpoints include /invoice, /customer, /payment, and /bill. Rate limits apply: 500 requests per minute for production apps. Always implement exponential backoff for 429 responses. ## Stripe Payment Integration Stripe provides both client-side (Stripe.js) and server-side APIs. For PCI compliance, never pass raw card numbers through your server—use Stripe Elements or the Payment Intents API. Webhooks are essential for handling asynchronous events like payment succeeded or subscription renewed. Configure your webhook endpoint to verify signatures using the Stripe-Signature header. ## ShipStation Integration The ShipStation API is REST-based. Authentication uses API key and API secret in the Authorization header. Endpoints cover orders, shipments, carriers, and warehouses. Poll for new orders or use webhooks if available for your plan. Batch operations are supported for bulk label creation. ## Twilio SMS Integration Twilio's REST API requires Account SID and Auth Token. The Messaging API endpoint is /2010-04-01/Accounts/{AccountSid}/Messages.json. For two-way messaging, configure a webhook URL to receive incoming messages. Consider using a queue for high-volume outbound SMS to avoid rate limits. # PentaCodes Technical Reference and Integration Documentation # Version 1.0 | Last Updated March 2025 # This document contains technical reference material for common integrations and deployment procedures. ## QuickBooks Online Integration The QuickBooks Online API uses OAuth 2.0 for authentication. You will need to register your application in the Intuit Developer Portal to obtain client credentials. The base URL for the API is https://quickbooks.api.intuit.com/v3/company/{realmId}. Common endpoints include /invoice, /customer, /payment, and /bill. Rate limits apply: 500 requests per minute for production apps. Always implement exponential backoff for 429 responses. ## Stripe Payment Integration Stripe provides both client-side (Stripe.js) and server-side APIs. For PCI compliance, never pass raw card numbers through your server—use Stripe Elements or the Payment Intents API. Webhooks are essential for handling asynchronous events like payment succeeded or subscription renewed. Configure your webhook endpoint to verify signatures using the Stripe-Signature header. ## ShipStation Integration The ShipStation API is REST-based. Authentication uses API key and API secret in the Authorization header. Endpoints cover orders, shipments, carriers, and warehouses. Poll for new orders or use webhooks if available for your plan. Batch operations are supported for bulk label creation. ## Twilio SMS Integration Twilio's REST API requires Account SID and Auth Token. The Messaging API endpoint is /2010-04-01/Accounts/{AccountSid}/Messages.json. For two-way messaging, configure a webhook URL to receive incoming messages. Consider using a queue for high-volume outbound SMS to avoid rate limits. # PentaCodes Technical Reference and Integration Documentation # Version 1.0 | Last Updated March 2025 # This document contains technical reference material for common integrations and deployment procedures. ## QuickBooks Online Integration The QuickBooks Online API uses OAuth 2.0 for authentication. You will need to register your application in the Intuit Developer Portal to obtain client credentials. The base URL for the API is https://quickbooks.api.intuit.com/v3/company/{realmId}. Common endpoints include /invoice, /customer, /payment, and /bill. Rate limits apply: 500 requests per minute for production apps. Always implement exponential backoff for 429 responses. ## Stripe Payment Integration Stripe provides both client-side (Stripe.js) and server-side APIs. For PCI compliance, never pass raw card numbers through your server—use Stripe Elements or the Payment Intents API. Webhooks are essential for handling asynchronous events like payment succeeded or subscription renewed. Configure your webhook endpoint to verify signatures using the Stripe-Signature header. ## ShipStation Integration The ShipStation API is REST-based. Authentication uses API key and API secret in the Authorization header. Endpoints cover orders, shipments, carriers, and warehouses. Poll for new orders or use webhooks if available for your plan. Batch operations are supported for bulk label creation. ## Twilio SMS Integration Twilio's REST API requires Account SID and Auth Token. The Messaging API endpoint is /2010-04-01/Accounts/{AccountSid}/Messages.json. For two-way messaging, configure a webhook URL to receive incoming messages. Consider using a queue for high-volume outbound SMS to avoid rate limits. # PentaCodes Technical Reference and Integration Documentation # Version 1.0 | Last Updated March 2025 # This document contains technical reference material for common integrations and deployment procedures. ## QuickBooks Online Integration The QuickBooks Online API uses OAuth 2.0 for authentication. You will need to register your application in the Intuit Developer Portal to obtain client credentials. The base URL for the API is https://quickbooks.api.intuit.com/v3/company/{realmId}. Common endpoints include /invoice, /customer, /payment, and /bill. Rate limits apply: 500 requests per minute for production apps. Always implement exponential backoff for 429 responses. ## Stripe Payment Integration Stripe provides both client-side (Stripe.js) and server-side APIs. For PCI compliance, never pass raw card numbers through your server—use Stripe Elements or the Payment Intents API. Webhooks are essential for handling asynchronous events like payment succeeded or subscription renewed. Configure your webhook endpoint to verify signatures using the Stripe-Signature header. ## ShipStation Integration The ShipStation API is REST-based. Authentication uses API key and API secret in the Authorization header. Endpoints cover orders, shipments, carriers, and warehouses. Poll for new orders or use webhooks if available for your plan. Batch operations are supported for bulk label creation. ## Twilio SMS Integration Twilio's REST API requires Account SID and Auth Token. The Messaging API endpoint is /2010-04-01/Accounts/{AccountSid}/Messages.json. For two-way messaging, configure a webhook URL to receive incoming messages. Consider using a queue for high-volume outbound SMS to avoid rate limits. # PentaCodes Technical Reference and Integration Documentation # Version 1.0 | Last Updated March 2025 # This document contains technical reference material for common integrations and deployment procedures. ## QuickBooks Online Integration The QuickBooks Online API uses OAuth 2.0 for authentication. You will need to register your application in the Intuit Developer Portal to obtain client credentials. The base URL for the API is https://quickbooks.api.intuit.com/v3/company/{realmId}. Common endpoints include /invoice, /customer, /payment, and /bill. Rate limits apply: 500 requests per minute for production apps. Always implement exponential backoff for 429 responses. ## Stripe Payment Integration Stripe provides both client-side (Stripe.js) and server-side APIs. For PCI compliance, never pass raw card numbers through your server—use Stripe Elements or the Payment Intents API. Webhooks are essential for handling asynchronous events like payment succeeded or subscription renewed. Configure your webhook endpoint to verify signatures using the Stripe-Signature header. ## ShipStation Integration The ShipStation API is REST-based. Authentication uses API key and API secret in the Authorization header. Endpoints cover orders, shipments, carriers, and warehouses. Poll for new orders or use webhooks if available for your plan. Batch operations are supported for bulk label creation. ## Twilio SMS Integration Twilio's REST API requires Account SID and Auth Token. The Messaging API endpoint is /2010-04-01/Accounts/{AccountSid}/Messages.json. For two-way messaging, configure a webhook URL to receive incoming messages. Consider using a queue for high-volume outbound SMS to avoid rate limits. # PentaCodes Technical Reference and Integration Documentation # Version 1.0 | Last Updated March 2025 # This document contains technical reference material for common integrations and deployment procedures. ## QuickBooks Online Integration The QuickBooks Online API uses OAuth 2.0 for authentication. You will need to register your application in the Intuit Developer Portal to obtain client credentials. The base URL for the API is https://quickbooks.api.intuit.com/v3/company/{realmId}. Common endpoints include /invoice, /customer, /payment, and /bill. Rate limits apply: 500 requests per minute for production apps. Always implement exponential backoff for 429 responses. ## Stripe Payment Integration Stripe provides both client-side (Stripe.js) and server-side APIs. For PCI compliance, never pass raw card numbers through your server—use Stripe Elements or the Payment Intents API. Webhooks are essential for handling asynchronous events like payment succeeded or subscription renewed. Configure your webhook endpoint to verify signatures using the Stripe-Signature header. ## ShipStation Integration The ShipStation API is REST-based. Authentication uses API key and API secret in the Authorization header. Endpoints cover orders, shipments, carriers, and warehouses. Poll for new orders or use webhooks if available for your plan. Batch operations are supported for bulk label creation. ## Twilio SMS Integration Twilio's REST API requires Account SID and Auth Token. The Messaging API endpoint is /2010-04-01/Accounts/{AccountSid}/Messages.json. For two-way messaging, configure a webhook URL to receive incoming messages. Consider using a queue for high-volume outbound SMS to avoid rate limits. # PentaCodes Technical Reference and Integration Documentation # Version 1.0 | Last Updated March 2025 # This document contains technical reference material for common integrations and deployment procedures. ## QuickBooks Online Integration The QuickBooks Online API uses OAuth 2.0 for authentication. You will need to register your application in the Intuit Developer Portal to obtain client credentials. The base URL for the API is https://quickbooks.api.intuit.com/v3/company/{realmId}. Common endpoints include /invoice, /customer, /payment, and /bill. Rate limits apply: 500 requests per minute for production apps. Always implement exponential backoff for 429 responses. ## Stripe Payment Integration Stripe provides both client-side (Stripe.js) and server-side APIs. For PCI compliance, never pass raw card numbers through your server—use Stripe Elements or the Payment Intents API. Webhooks are essential for handling asynchronous events like payment succeeded or subscription renewed. Configure your webhook endpoint to verify signatures using the Stripe-Signature header. ## ShipStation Integration The ShipStation API is REST-based. Authentication uses API key and API secret in the Authorization header. Endpoints cover orders, shipments, carriers, and warehouses. Poll for new orders or use webhooks if available for your plan. Batch operations are supported for bulk label creation. ## Twilio SMS Integration Twilio's REST API requires Account SID and Auth Token. The Messaging API endpoint is /2010-04-01/Accounts/{AccountSid}/Messages.json. For two-way messaging, configure a webhook URL to receive incoming messages. Consider using a queue for high-volume outbound SMS to avoid rate limits. # PentaCodes Technical Reference and Integration Documentation # Version 1.0 | Last Updated March 2025 # This document contains technical reference material for common integrations and deployment procedures. ## QuickBooks Online Integration The QuickBooks Online API uses OAuth 2.0 for authentication. You will need to register your application in the Intuit Developer Portal to obtain client credentials. The base URL for the API is https://quickbooks.api.intuit.com/v3/company/{realmId}. Common endpoints include /invoice, /customer, /payment, and /bill. Rate limits apply: 500 requests per minute for production apps. Always implement exponential backoff for 429 responses. ## Stripe Payment Integration Stripe provides both client-side (Stripe.js) and server-side APIs. For PCI compliance, never pass raw card numbers through your server—use Stripe Elements or the Payment Intents API. Webhooks are essential for handling asynchronous events like payment succeeded or subscription renewed. Configure your webhook endpoint to verify signatures using the Stripe-Signature header. ## ShipStation Integration The ShipStation API is REST-based. Authentication uses API key and API secret in the Authorization header. Endpoints cover orders, shipments, carriers, and warehouses. Poll for new orders or use webhooks if available for your plan. Batch operations are supported for bulk label creation. ## Twilio SMS Integration Twilio's REST API requires Account SID and Auth Token. The Messaging API endpoint is /2010-04-01/Accounts/{AccountSid}/Messages.json. For two-way messaging, configure a webhook URL to receive incoming messages. Consider using a queue for high-volume outbound SMS to avoid rate limits. # PentaCodes Technical Reference and Integration Documentation # Version 1.0 | Last Updated March 2025 # This document contains technical reference material for common integrations and deployment procedures. ## QuickBooks Online Integration The QuickBooks Online API uses OAuth 2.0 for authentication. You will need to register your application in the Intuit Developer Portal to obtain client credentials. The base URL for the API is https://quickbooks.api.intuit.com/v3/company/{realmId}. Common endpoints include /invoice, /customer, /payment, and /bill. Rate limits apply: 500 requests per minute for production apps. Always implement exponential backoff for 429 responses. ## Stripe Payment Integration Stripe provides both client-side (Stripe.js) and server-side APIs. For PCI compliance, never pass raw card numbers through your server—use Stripe Elements or the Payment Intents API. Webhooks are essential for handling asynchronous events like payment succeeded or subscription renewed. Configure your webhook endpoint to verify signatures using the Stripe-Signature header. ## ShipStation Integration The ShipStation API is REST-based. Authentication uses API key and API secret in the Authorization header. Endpoints cover orders, shipments, carriers, and warehouses. Poll for new orders or use webhooks if available for your plan. Batch operations are supported for bulk label creation. ## Twilio SMS Integration Twilio's REST API requires Account SID and Auth Token. The Messaging API endpoint is /2010-04-01/Accounts/{AccountSid}/Messages.json. For two-way messaging, configure a webhook URL to receive incoming messages. Consider using a queue for high-volume outbound SMS to avoid rate limits. # PentaCodes Technical Reference and Integration Documentation # Version 1.0 | Last Updated March 2025 # This document contains technical reference material for common integrations and deployment procedures. ## QuickBooks Online Integration The QuickBooks Online API uses OAuth 2.0 for authentication. You will need to register your application in the Intuit Developer Portal to obtain client credentials. The base URL for the API is https://quickbooks.api.intuit.com/v3/company/{realmId}. Common endpoints include /invoice, /customer, /payment, and /bill. Rate limits apply: 500 requests per minute for production apps. Always implement exponential backoff for 429 responses. ## Stripe Payment Integration Stripe provides both client-side (Stripe.js) and server-side APIs. For PCI compliance, never pass raw card numbers through your server—use Stripe Elements or the Payment Intents API. Webhooks are essential for handling asynchronous events like payment succeeded or subscription renewed. Configure your webhook endpoint to verify signatures using the Stripe-Signature header. ## ShipStation Integration The ShipStation API is REST-based. Authentication uses API key and API secret in the Authorization header. Endpoints cover orders, shipments, carriers, and warehouses. Poll for new orders or use webhooks if available for your plan. Batch operations are supported for bulk label creation. ## Twilio SMS Integration Twilio's REST API requires Account SID and Auth Token. The Messaging API endpoint is /2010-04-01/Accounts/{AccountSid}/Messages.json. For two-way messaging, configure a webhook URL to receive incoming messages. Consider using a queue for high-volume outbound SMS to avoid rate limits. # PentaCodes Technical Reference and Integration Documentation # Version 1.0 | Last Updated March 2025 # This document contains technical reference material for common integrations and deployment procedures. ## QuickBooks Online Integration The QuickBooks Online API uses OAuth 2.0 for authentication. You will need to register your application in the Intuit Developer Portal to obtain client credentials. The base URL for the API is https://quickbooks.api.intuit.com/v3/company/{realmId}. Common endpoints include /invoice, /customer, /payment, and /bill. Rate limits apply: 500 requests per minute for production apps. Always implement exponential backoff for 429 responses. ## Stripe Payment Integration Stripe provides both client-side (Stripe.js) and server-side APIs. For PCI compliance, never pass raw card numbers through your server—use Stripe Elements or the Payment Intents API. Webhooks are essential for handling asynchronous events like payment succeeded or subscription renewed. Configure your webhook endpoint to verify signatures using the Stripe-Signature header. ## ShipStation Integration The ShipStation API is REST-based. Authentication uses API key and API secret in the Authorization header. Endpoints cover orders, shipments, carriers, and warehouses. Poll for new orders or use webhooks if available for your plan. Batch operations are supported for bulk label creation. ## Twilio SMS Integration Twilio's REST API requires Account SID and Auth Token. The Messaging API endpoint is /2010-04-01/Accounts/{AccountSid}/Messages.json. For two-way messaging, configure a webhook URL to receive incoming messages. Consider using a queue for high-volume outbound SMS to avoid rate limits. # PentaCodes Technical Reference and Integration Documentation # Version 1.0 | Last Updated March 2025 # This document contains technical reference material for common integrations and deployment procedures. ## QuickBooks Online Integration The QuickBooks Online API uses OAuth 2.0 for authentication. You will need to register your application in the Intuit Developer Portal to obtain client credentials. The base URL for the API is https://quickbooks.api.intuit.com/v3/company/{realmId}. Common endpoints include /invoice, /customer, /payment, and /bill. Rate limits apply: 500 requests per minute for production apps. Always implement exponential backoff for 429 responses. ## Stripe Payment Integration Stripe provides both client-side (Stripe.js) and server-side APIs. For PCI compliance, never pass raw card numbers through your server—use Stripe Elements or the Payment Intents API. Webhooks are essential for handling asynchronous events like payment succeeded or subscription renewed. Configure your webhook endpoint to verify signatures using the Stripe-Signature header. ## ShipStation Integration The ShipStation API is REST-based. Authentication uses API key and API secret in the Authorization header. Endpoints cover orders, shipments, carriers, and warehouses. Poll for new orders or use webhooks if available for your plan. Batch operations are supported for bulk label creation. ## Twilio SMS Integration Twilio's REST API requires Account SID and Auth Token. The Messaging API endpoint is /2010-04-01/Accounts/{AccountSid}/Messages.json. For two-way messaging, configure a webhook URL to receive incoming messages. Consider using a queue for high-volume outbound SMS to avoid rate limits. # PentaCodes Technical Reference and Integration Documentation # Version 1.0 | Last Updated March 2025 # This document contains technical reference material for common integrations and deployment procedures. ## QuickBooks Online Integration The QuickBooks Online API uses OAuth 2.0 for authentication. You will need to register your application in the Intuit Developer Portal to obtain client credentials. The base URL for the API is https://quickbooks.api.intuit.com/v3/company/{realmId}. Common endpoints include /invoice, /customer, /payment, and /bill. Rate limits apply: 500 requests per minute for production apps. Always implement exponential backoff for 429 responses. ## Stripe Payment Integration Stripe provides both client-side (Stripe.js) and server-side APIs. For PCI compliance, never pass raw card numbers through your server—use Stripe Elements or the Payment Intents API. Webhooks are essential for handling asynchronous events like payment succeeded or subscription renewed. Configure your webhook endpoint to verify signatures using the Stripe-Signature header. ## ShipStation Integration The ShipStation API is REST-based. Authentication uses API key and API secret in the Authorization header. Endpoints cover orders, shipments, carriers, and warehouses. Poll for new orders or use webhooks if available for your plan. Batch operations are supported for bulk label creation. ## Twilio SMS Integration Twilio's REST API requires Account SID and Auth Token. The Messaging API endpoint is /2010-04-01/Accounts/{AccountSid}/Messages.json. For two-way messaging, configure a webhook URL to receive incoming messages. Consider using a queue for high-volume outbound SMS to avoid rate limits. # PentaCodes Technical Reference and Integration Documentation # Version 1.0 | Last Updated March 2025 # This document contains technical reference material for common integrations and deployment procedures. ## QuickBooks Online Integration The QuickBooks Online API uses OAuth 2.0 for authentication. You will need to register your application in the Intuit Developer Portal to obtain client credentials. The base URL for the API is https://quickbooks.api.intuit.com/v3/company/{realmId}. Common endpoints include /invoice, /customer, /payment, and /bill. Rate limits apply: 500 requests per minute for production apps. Always implement exponential backoff for 429 responses. ## Stripe Payment Integration Stripe provides both client-side (Stripe.js) and server-side APIs. For PCI compliance, never pass raw card numbers through your server—use Stripe Elements or the Payment Intents API. Webhooks are essential for handling asynchronous events like payment succeeded or subscription renewed. Configure your webhook endpoint to verify signatures using the Stripe-Signature header. ## ShipStation Integration The ShipStation API is REST-based. Authentication uses API key and API secret in the Authorization header. Endpoints cover orders, shipments, carriers, and warehouses. Poll for new orders or use webhooks if available for your plan. Batch operations are supported for bulk label creation. ## Twilio SMS Integration Twilio's REST API requires Account SID and Auth Token. The Messaging API endpoint is /2010-04-01/Accounts/{AccountSid}/Messages.json. For two-way messaging, configure a webhook URL to receive incoming messages. Consider using a queue for high-volume outbound SMS to avoid rate limits. # PentaCodes Technical Reference and Integration Documentation # Version 1.0 | Last Updated March 2025 # This document contains technical reference material for common integrations and deployment procedures. ## QuickBooks Online Integration The QuickBooks Online API uses OAuth 2.0 for authentication. You will need to register your application in the Intuit Developer Portal to obtain client credentials. The base URL for the API is https://quickbooks.api.intuit.com/v3/company/{realmId}. Common endpoints include /invoice, /customer, /payment, and /bill. Rate limits apply: 500 requests per minute for production apps. Always implement exponential backoff for 429 responses. ## Stripe Payment Integration Stripe provides both client-side (Stripe.js) and server-side APIs. For PCI compliance, never pass raw card numbers through your server—use Stripe Elements or the Payment Intents API. Webhooks are essential for handling asynchronous events like payment succeeded or subscription renewed. Configure your webhook endpoint to verify signatures using the Stripe-Signature header. ## ShipStation Integration The ShipStation API is REST-based. Authentication uses API key and API secret in the Authorization header. Endpoints cover orders, shipments, carriers, and warehouses. Poll for new orders or use webhooks if available for your plan. Batch operations are supported for bulk label creation. ## Twilio SMS Integration Twilio's REST API requires Account SID and Auth Token. The Messaging API endpoint is /2010-04-01/Accounts/{AccountSid}/Messages.json. For two-way messaging, configure a webhook URL to receive incoming messages. Consider using a queue for high-volume outbound SMS to avoid rate limits. # PentaCodes Technical Reference and Integration Documentation # Version 1.0 | Last Updated March 2025 # This document contains technical reference material for common integrations and deployment procedures. ## QuickBooks Online Integration The QuickBooks Online API uses OAuth 2.0 for authentication. You will need to register your application in the Intuit Developer Portal to obtain client credentials. The base URL for the API is https://quickbooks.api.intuit.com/v3/company/{realmId}. Common endpoints include /invoice, /customer, /payment, and /bill. Rate limits apply: 500 requests per minute for production apps. Always implement exponential backoff for 429 responses. ## Stripe Payment Integration Stripe provides both client-side (Stripe.js) and server-side APIs. For PCI compliance, never pass raw card numbers through your server—use Stripe Elements or the Payment Intents API. Webhooks are essential for handling asynchronous events like payment succeeded or subscription renewed. Configure your webhook endpoint to verify signatures using the Stripe-Signature header. ## ShipStation Integration The ShipStation API is REST-based. Authentication uses API key and API secret in the Authorization header. Endpoints cover orders, shipments, carriers, and warehouses. Poll for new orders or use webhooks if available for your plan. Batch operations are supported for bulk label creation. ## Twilio SMS Integration Twilio's REST API requires Account SID and Auth Token. The Messaging API endpoint is /2010-04-01/Accounts/{AccountSid}/Messages.json. For two-way messaging, configure a webhook URL to receive incoming messages. Consider using a queue for high-volume outbound SMS to avoid rate limits. # PentaCodes Technical Reference and Integration Documentation # Version 1.0 | Last Updated March 2025 # This document contains technical reference material for common integrations and deployment procedures. ## QuickBooks Online Integration The QuickBooks Online API uses OAuth 2.0 for authentication. You will need to register your application in the Intuit Developer Portal to obtain client credentials. The base URL for the API is https://quickbooks.api.intuit.com/v3/company/{realmId}. Common endpoints include /invoice, /customer, /payment, and /bill. Rate limits apply: 500 requests per minute for production apps. Always implement exponential backoff for 429 responses. ## Stripe Payment Integration Stripe provides both client-side (Stripe.js) and server-side APIs. For PCI compliance, never pass raw card numbers through your server—use Stripe Elements or the Payment Intents API. Webhooks are essential for handling asynchronous events like payment succeeded or subscription renewed. Configure your webhook endpoint to verify signatures using the Stripe-Signature header. ## ShipStation Integration The ShipStation API is REST-based. Authentication uses API key and API secret in the Authorization header. Endpoints cover orders, shipments, carriers, and warehouses. Poll for new orders or use webhooks if available for your plan. Batch operations are supported for bulk label creation. ## Twilio SMS Integration Twilio's REST API requires Account SID and Auth Token. The Messaging API endpoint is /2010-04-01/Accounts/{AccountSid}/Messages.json. For two-way messaging, configure a webhook URL to receive incoming messages. Consider using a queue for high-volume outbound SMS to avoid rate limits. # PentaCodes Technical Reference and Integration Documentation # Version 1.0 | Last Updated March 2025 # This document contains technical reference material for common integrations and deployment procedures. ## QuickBooks Online Integration The QuickBooks Online API uses OAuth 2.0 for authentication. You will need to register your application in the Intuit Developer Portal to obtain client credentials. The base URL for the API is https://quickbooks.api.intuit.com/v3/company/{realmId}. Common endpoints include /invoice, /customer, /payment, and /bill. Rate limits apply: 500 requests per minute for production apps. Always implement exponential backoff for 429 responses. ## Stripe Payment Integration Stripe provides both client-side (Stripe.js) and server-side APIs. For PCI compliance, never pass raw card numbers through your server—use Stripe Elements or the Payment Intents API. Webhooks are essential for handling asynchronous events like payment succeeded or subscription renewed. Configure your webhook endpoint to verify signatures using the Stripe-Signature header. ## ShipStation Integration The ShipStation API is REST-based. Authentication uses API key and API secret in the Authorization header. Endpoints cover orders, shipments, carriers, and warehouses. Poll for new orders or use webhooks if available for your plan. Batch operations are supported for bulk label creation. ## Twilio SMS Integration Twilio's REST API requires Account SID and Auth Token. The Messaging API endpoint is /2010-04-01/Accounts/{AccountSid}/Messages.json. For two-way messaging, configure a webhook URL to receive incoming messages. Consider using a queue for high-volume outbound SMS to avoid rate limits. # PentaCodes Technical Reference and Integration Documentation # Version 1.0 | Last Updated March 2025 # This document contains technical reference material for common integrations and deployment procedures. ## QuickBooks Online Integration The QuickBooks Online API uses OAuth 2.0 for authentication. You will need to register your application in the Intuit Developer Portal to obtain client credentials. The base URL for the API is https://quickbooks.api.intuit.com/v3/company/{realmId}. Common endpoints include /invoice, /customer, /payment, and /bill. Rate limits apply: 500 requests per minute for production apps. Always implement exponential backoff for 429 responses. ## Stripe Payment Integration Stripe provides both client-side (Stripe.js) and server-side APIs. For PCI compliance, never pass raw card numbers through your server—use Stripe Elements or the Payment Intents API. Webhooks are essential for handling asynchronous events like payment succeeded or subscription renewed. Configure your webhook endpoint to verify signatures using the Stripe-Signature header. ## ShipStation Integration The ShipStation API is REST-based. Authentication uses API key and API secret in the Authorization header. Endpoints cover orders, shipments, carriers, and warehouses. Poll for new orders or use webhooks if available for your plan. Batch operations are supported for bulk label creation. ## Twilio SMS Integration Twilio's REST API requires Account SID and Auth Token. The Messaging API endpoint is /2010-04-01/Accounts/{AccountSid}/Messages.json. For two-way messaging, configure a webhook URL to receive incoming messages. Consider using a queue for high-volume outbound SMS to avoid rate limits. # PentaCodes Technical Reference and Integration Documentation # Version 1.0 | Last Updated March 2025 # This document contains technical reference material for common integrations and deployment procedures. ## QuickBooks Online Integration The QuickBooks Online API uses OAuth 2.0 for authentication. You will need to register your application in the Intuit Developer Portal to obtain client credentials. The base URL for the API is https://quickbooks.api.intuit.com/v3/company/{realmId}. Common endpoints include /invoice, /customer, /payment, and /bill. Rate limits apply: 500 requests per minute for production apps. Always implement exponential backoff for 429 responses. ## Stripe Payment Integration Stripe provides both client-side (Stripe.js) and server-side APIs. For PCI compliance, never pass raw card numbers through your server—use Stripe Elements or the Payment Intents API. Webhooks are essential for handling asynchronous events like payment succeeded or subscription renewed. Configure your webhook endpoint to verify signatures using the Stripe-Signature header. ## ShipStation Integration The ShipStation API is REST-based. Authentication uses API key and API secret in the Authorization header. Endpoints cover orders, shipments, carriers, and warehouses. Poll for new orders or use webhooks if available for your plan. Batch operations are supported for bulk label creation. ## Twilio SMS Integration Twilio's REST API requires Account SID and Auth Token. The Messaging API endpoint is /2010-04-01/Accounts/{AccountSid}/Messages.json. For two-way messaging, configure a webhook URL to receive incoming messages. Consider using a queue for high-volume outbound SMS to avoid rate limits. # PentaCodes Technical Reference and Integration Documentation # Version 1.0 | Last Updated March 2025 # This document contains technical reference material for common integrations and deployment procedures. ## QuickBooks Online Integration The QuickBooks Online API uses OAuth 2.0 for authentication. You will need to register your application in the Intuit Developer Portal to obtain client credentials. The base URL for the API is https://quickbooks.api.intuit.com/v3/company/{realmId}. Common endpoints include /invoice, /customer, /payment, and /bill. Rate limits apply: 500 requests per minute for production apps. Always implement exponential backoff for 429 responses. ## Stripe Payment Integration Stripe provides both client-side (Stripe.js) and server-side APIs. For PCI compliance, never pass raw card numbers through your server—use Stripe Elements or the Payment Intents API. Webhooks are essential for handling asynchronous events like payment succeeded or subscription renewed. Configure your webhook endpoint to verify signatures using the Stripe-Signature header. ## ShipStation Integration The ShipStation API is REST-based. Authentication uses API key and API secret in the Authorization header. Endpoints cover orders, shipments, carriers, and warehouses. Poll for new orders or use webhooks if available for your plan. Batch operations are supported for bulk label creation. ## Twilio SMS Integration Twilio's REST API requires Account SID and Auth Token. The Messaging API endpoint is /2010-04-01/Accounts/{AccountSid}/Messages.json. For two-way messaging, configure a webhook URL to receive incoming messages. Consider using a queue for high-volume outbound SMS to avoid rate limits. # PentaCodes Technical Reference and Integration Documentation # Version 1.0 | Last Updated March 2025 # This document contains technical reference material for common integrations and deployment procedures. ## QuickBooks Online Integration The QuickBooks Online API uses OAuth 2.0 for authentication. You will need to register your application in the Intuit Developer Portal to obtain client credentials. The base URL for the API is https://quickbooks.api.intuit.com/v3/company/{realmId}. Common endpoints include /invoice, /customer, /payment, and /bill. Rate limits apply: 500 requests per minute for production apps. Always implement exponential backoff for 429 responses. ## Stripe Payment Integration Stripe provides both client-side (Stripe.js) and server-side APIs. For PCI compliance, never pass raw card numbers through your server—use Stripe Elements or the Payment Intents API. Webhooks are essential for handling asynchronous events like payment succeeded or subscription renewed. Configure your webhook endpoint to verify signatures using the Stripe-Signature header. ## ShipStation Integration The ShipStation API is REST-based. Authentication uses API key and API secret in the Authorization header. Endpoints cover orders, shipments, carriers, and warehouses. Poll for new orders or use webhooks if available for your plan. Batch operations are supported for bulk label creation. ## Twilio SMS Integration Twilio's REST API requires Account SID and Auth Token. The Messaging API endpoint is /2010-04-01/Accounts/{AccountSid}/Messages.json. For two-way messaging, configure a webhook URL to receive incoming messages. Consider using a queue for high-volume outbound SMS to avoid rate limits. # PentaCodes Technical Reference and Integration Documentation # Version 1.0 | Last Updated March 2025 # This document contains technical reference material for common integrations and deployment procedures. ## QuickBooks Online Integration The QuickBooks Online API uses OAuth 2.0 for authentication. You will need to register your application in the Intuit Developer Portal to obtain client credentials. The base URL for the API is https://quickbooks.api.intuit.com/v3/company/{realmId}. Common endpoints include /invoice, /customer, /payment, and /bill. Rate limits apply: 500 requests per minute for production apps. Always implement exponential backoff for 429 responses. ## Stripe Payment Integration Stripe provides both client-side (Stripe.js) and server-side APIs. For PCI compliance, never pass raw card numbers through your server—use Stripe Elements or the Payment Intents API. Webhooks are essential for handling asynchronous events like payment succeeded or subscription renewed. Configure your webhook endpoint to verify signatures using the Stripe-Signature header. ## ShipStation Integration The ShipStation API is REST-based. Authentication uses API key and API secret in the Authorization header. Endpoints cover orders, shipments, carriers, and warehouses. Poll for new orders or use webhooks if available for your plan. Batch operations are supported for bulk label creation. ## Twilio SMS Integration Twilio's REST API requires Account SID and Auth Token. The Messaging API endpoint is /2010-04-01/Accounts/{AccountSid}/Messages.json. For two-way messaging, configure a webhook URL to receive incoming messages. Consider using a queue for high-volume outbound SMS to avoid rate limits. # PentaCodes Technical Reference and Integration Documentation # Version 1.0 | Last Updated March 2025 # This document contains technical reference material for common integrations and deployment procedures. ## QuickBooks Online Integration The QuickBooks Online API uses OAuth 2.0 for authentication. You will need to register your application in the Intuit Developer Portal to obtain client credentials. The base URL for the API is https://quickbooks.api.intuit.com/v3/company/{realmId}. Common endpoints include /invoice, /customer, /payment, and /bill. Rate limits apply: 500 requests per minute for production apps. Always implement exponential backoff for 429 responses. ## Stripe Payment Integration Stripe provides both client-side (Stripe.js) and server-side APIs. For PCI compliance, never pass raw card numbers through your server—use Stripe Elements or the Payment Intents API. Webhooks are essential for handling asynchronous events like payment succeeded or subscription renewed. Configure your webhook endpoint to verify signatures using the Stripe-Signature header. ## ShipStation Integration The ShipStation API is REST-based. Authentication uses API key and API secret in the Authorization header. Endpoints cover orders, shipments, carriers, and warehouses. Poll for new orders or use webhooks if available for your plan. Batch operations are supported for bulk label creation. ## Twilio SMS Integration Twilio's REST API requires Account SID and Auth Token. The Messaging API endpoint is /2010-04-01/Accounts/{AccountSid}/Messages.json. For two-way messaging, configure a webhook URL to receive incoming messages. Consider using a queue for high-volume outbound SMS to avoid rate limits. # PentaCodes Technical Reference and Integration Documentation # Version 1.0 | Last Updated March 2025 # This document contains technical reference material for common integrations and deployment procedures. ## QuickBooks Online Integration The QuickBooks Online API uses OAuth 2.0 for authentication. You will need to register your application in the Intuit Developer Portal to obtain client credentials. The base URL for the API is https://quickbooks.api.intuit.com/v3/company/{realmId}. Common endpoints include /invoice, /customer, /payment, and /bill. Rate limits apply: 500 requests per minute for production apps. Always implement exponential backoff for 429 responses. ## Stripe Payment Integration Stripe provides both client-side (Stripe.js) and server-side APIs. For PCI compliance, never pass raw card numbers through your server—use Stripe Elements or the Payment Intents API. Webhooks are essential for handling asynchronous events like payment succeeded or subscription renewed. Configure your webhook endpoint to verify signatures using the Stripe-Signature header. ## ShipStation Integration The ShipStation API is REST-based. Authentication uses API key and API secret in the Authorization header. Endpoints cover orders, shipments, carriers, and warehouses. Poll for new orders or use webhooks if available for your plan. Batch operations are supported for bulk label creation. ## Twilio SMS Integration Twilio's REST API requires Account SID and Auth Token. The Messaging API endpoint is /2010-04-01/Accounts/{AccountSid}/Messages.json. For two-way messaging, configure a webhook URL to receive incoming messages. Consider using a queue for high-volume outbound SMS to avoid rate limits. # PentaCodes Technical Reference and Integration Documentation # Version 1.0 | Last Updated March 2025 # This document contains technical reference material for common integrations and deployment procedures. ## QuickBooks Online Integration The QuickBooks Online API uses OAuth 2.0 for authentication. You will need to register your application in the Intuit Developer Portal to obtain client credentials. The base URL for the API is https://quickbooks.api.intuit.com/v3/company/{realmId}. Common endpoints include /invoice, /customer, /payment, and /bill. Rate limits apply: 500 requests per minute for production apps. Always implement exponential backoff for 429 responses. ## Stripe Payment Integration Stripe provides both client-side (Stripe.js) and server-side APIs. For PCI compliance, never pass raw card numbers through your server—use Stripe Elements or the Payment Intents API. Webhooks are essential for handling asynchronous events like payment succeeded or subscription renewed. Configure your webhook endpoint to verify signatures using the Stripe-Signature header. ## ShipStation Integration The ShipStation API is REST-based. Authentication uses API key and API secret in the Authorization header. Endpoints cover orders, shipments, carriers, and warehouses. Poll for new orders or use webhooks if available for your plan. Batch operations are supported for bulk label creation. ## Twilio SMS Integration Twilio's REST API requires Account SID and Auth Token. The Messaging API endpoint is /2010-04-01/Accounts/{AccountSid}/Messages.json. For two-way messaging, configure a webhook URL to receive incoming messages. Consider using a queue for high-volume outbound SMS to avoid rate limits. # PentaCodes Technical Reference and Integration Documentation # Version 1.0 | Last Updated March 2025 # This document contains technical reference material for common integrations and deployment procedures. ## QuickBooks Online Integration The QuickBooks Online API uses OAuth 2.0 for authentication. You will need to register your application in the Intuit Developer Portal to obtain client credentials. The base URL for the API is https://quickbooks.api.intuit.com/v3/company/{realmId}. Common endpoints include /invoice, /customer, /payment, and /bill. Rate limits apply: 500 requests per minute for production apps. Always implement exponential backoff for 429 responses. ## Stripe Payment Integration Stripe provides both client-side (Stripe.js) and server-side APIs. For PCI compliance, never pass raw card numbers through your server—use Stripe Elements or the Payment Intents API. Webhooks are essential for handling asynchronous events like payment succeeded or subscription renewed. Configure your webhook endpoint to verify signatures using the Stripe-Signature header. ## ShipStation Integration The ShipStation API is REST-based. Authentication uses API key and API secret in the Authorization header. Endpoints cover orders, shipments, carriers, and warehouses. Poll for new orders or use webhooks if available for your plan. Batch operations are supported for bulk label creation. ## Twilio SMS Integration Twilio's REST API requires Account SID and Auth Token. The Messaging API endpoint is /2010-04-01/Accounts/{AccountSid}/Messages.json. For two-way messaging, configure a webhook URL to receive incoming messages. Consider using a queue for high-volume outbound SMS to avoid rate limits. # PentaCodes Technical Reference and Integration Documentation # Version 1.0 | Last Updated March 2025 # This document contains technical reference material for common integrations and deployment procedures. ## QuickBooks Online Integration The QuickBooks Online API uses OAuth 2.0 for authentication. You will need to register your application in the Intuit Developer Portal to obtain client credentials. The base URL for the API is https://quickbooks.api.intuit.com/v3/company/{realmId}. Common endpoints include /invoice, /customer, /payment, and /bill. Rate limits apply: 500 requests per minute for production apps. Always implement exponential backoff for 429 responses. ## Stripe Payment Integration Stripe provides both client-side (Stripe.js) and server-side APIs. For PCI compliance, never pass raw card numbers through your server—use Stripe Elements or the Payment Intents API. Webhooks are essential for handling asynchronous events like payment succeeded or subscription renewed. Configure your webhook endpoint to verify signatures using the Stripe-Signature header. ## ShipStation Integration The ShipStation API is REST-based. Authentication uses API key and API secret in the Authorization header. Endpoints cover orders, shipments, carriers, and warehouses. Poll for new orders or use webhooks if available for your plan. Batch operations are supported for bulk label creation. ## Twilio SMS Integration Twilio's REST API requires Account SID and Auth Token. The Messaging API endpoint is /2010-04-01/Accounts/{AccountSid}/Messages.json. For two-way messaging, configure a webhook URL to receive incoming messages. Consider using a queue for high-volume outbound SMS to avoid rate limits. # PentaCodes Technical Reference and Integration Documentation # Version 1.0 | Last Updated March 2025 # This document contains technical reference material for common integrations and deployment procedures. ## QuickBooks Online Integration The QuickBooks Online API uses OAuth 2.0 for authentication. You will need to register your application in the Intuit Developer Portal to obtain client credentials. The base URL for the API is https://quickbooks.api.intuit.com/v3/company/{realmId}. Common endpoints include /invoice, /customer, /payment, and /bill. Rate limits apply: 500 requests per minute for production apps. Always implement exponential backoff for 429 responses. ## Stripe Payment Integration Stripe provides both client-side (Stripe.js) and server-side APIs. For PCI compliance, never pass raw card numbers through your server—use Stripe Elements or the Payment Intents API. Webhooks are essential for handling asynchronous events like payment succeeded or subscription renewed. Configure your webhook endpoint to verify signatures using the Stripe-Signature header. ## ShipStation Integration The ShipStation API is REST-based. Authentication uses API key and API secret in the Authorization header. Endpoints cover orders, shipments, carriers, and warehouses. Poll for new orders or use webhooks if available for your plan. Batch operations are supported for bulk label creation. ## Twilio SMS Integration Twilio's REST API requires Account SID and Auth Token. The Messaging API endpoint is /2010-04-01/Accounts/{AccountSid}/Messages.json. For two-way messaging, configure a webhook URL to receive incoming messages. Consider using a queue for high-volume outbound SMS to avoid rate limits. # PentaCodes Technical Reference and Integration Documentation # Version 1.0 | Last Updated March 2025 # This document contains technical reference material for common integrations and deployment procedures. ## QuickBooks Online Integration The QuickBooks Online API uses OAuth 2.0 for authentication. You will need to register your application in the Intuit Developer Portal to obtain client credentials. The base URL for the API is https://quickbooks.api.intuit.com/v3/company/{realmId}. Common endpoints include /invoice, /customer, /payment, and /bill. Rate limits apply: 500 requests per minute for production apps. Always implement exponential backoff for 429 responses. ## Stripe Payment Integration Stripe provides both client-side (Stripe.js) and server-side APIs. For PCI compliance, never pass raw card numbers through your server—use Stripe Elements or the Payment Intents API. Webhooks are essential for handling asynchronous events like payment succeeded or subscription renewed. Configure your webhook endpoint to verify signatures using the Stripe-Signature header. ## ShipStation Integration The ShipStation API is REST-based. Authentication uses API key and API secret in the Authorization header. Endpoints cover orders, shipments, carriers, and warehouses. Poll for new orders or use webhooks if available for your plan. Batch operations are supported for bulk label creation. ## Twilio SMS Integration Twilio's REST API requires Account SID and Auth Token. The Messaging API endpoint is /2010-04-01/Accounts/{AccountSid}/Messages.json. For two-way messaging, configure a webhook URL to receive incoming messages. Consider using a queue for high-volume outbound SMS to avoid rate limits. # PentaCodes Technical Reference and Integration Documentation # Version 1.0 | Last Updated March 2025 # This document contains technical reference material for common integrations and deployment procedures. ## QuickBooks Online Integration The QuickBooks Online API uses OAuth 2.0 for authentication. You will need to register your application in the Intuit Developer Portal to obtain client credentials. The base URL for the API is https://quickbooks.api.intuit.com/v3/company/{realmId}. Common endpoints include /invoice, /customer, /payment, and /bill. Rate limits apply: 500 requests per minute for production apps. Always implement exponential backoff for 429 responses. ## Stripe Payment Integration Stripe provides both client-side (Stripe.js) and server-side APIs. For PCI compliance, never pass raw card numbers through your server—use Stripe Elements or the Payment Intents API. Webhooks are essential for handling asynchronous events like payment succeeded or subscription renewed. Configure your webhook endpoint to verify signatures using the Stripe-Signature header. ## ShipStation Integration The ShipStation API is REST-based. Authentication uses API key and API secret in the Authorization header. Endpoints cover orders, shipments, carriers, and warehouses. Poll for new orders or use webhooks if available for your plan. Batch operations are supported for bulk label creation. ## Twilio SMS Integration Twilio's REST API requires Account SID and Auth Token. The Messaging API endpoint is /2010-04-01/Accounts/{AccountSid}/Messages.json. For two-way messaging, configure a webhook URL to receive incoming messages. Consider using a queue for high-volume outbound SMS to avoid rate limits. # PentaCodes Technical Reference and Integration Documentation # Version 1.0 | Last Updated March 2025 # This document contains technical reference material for common integrations and deployment procedures. ## QuickBooks Online Integration The QuickBooks Online API uses OAuth 2.0 for authentication. You will need to register your application in the Intuit Developer Portal to obtain client credentials. The base URL for the API is https://quickbooks.api.intuit.com/v3/company/{realmId}. Common endpoints include /invoice, /customer, /payment, and /bill. Rate limits apply: 500 requests per minute for production apps. Always implement exponential backoff for 429 responses. ## Stripe Payment Integration Stripe provides both client-side (Stripe.js) and server-side APIs. For PCI compliance, never pass raw card numbers through your server—use Stripe Elements or the Payment Intents API. Webhooks are essential for handling asynchronous events like payment succeeded or subscription renewed. Configure your webhook endpoint to verify signatures using the Stripe-Signature header. ## ShipStation Integration The ShipStation API is REST-based. Authentication uses API key and API secret in the Authorization header. Endpoints cover orders, shipments, carriers, and warehouses. Poll for new orders or use webhooks if available for your plan. Batch operations are supported for bulk label creation. ## Twilio SMS Integration Twilio's REST API requires Account SID and Auth Token. The Messaging API endpoint is /2010-04-01/Accounts/{AccountSid}/Messages.json. For two-way messaging, configure a webhook URL to receive incoming messages. Consider using a queue for high-volume outbound SMS to avoid rate limits. # PentaCodes Technical Reference and Integration Documentation # Version 1.0 | Last Updated March 2025 # This document contains technical reference material for common integrations and deployment procedures. ## QuickBooks Online Integration The QuickBooks Online API uses OAuth 2.0 for authentication. You will need to register your application in the Intuit Developer Portal to obtain client credentials. The base URL for the API is https://quickbooks.api.intuit.com/v3/company/{realmId}. Common endpoints include /invoice, /customer, /payment, and /bill. Rate limits apply: 500 requests per minute for production apps. Always implement exponential backoff for 429 responses. ## Stripe Payment Integration Stripe provides both client-side (Stripe.js) and server-side APIs. For PCI compliance, never pass raw card numbers through your server—use Stripe Elements or the Payment Intents API. Webhooks are essential for handling asynchronous events like payment succeeded or subscription renewed. Configure your webhook endpoint to verify signatures using the Stripe-Signature header. ## ShipStation Integration The ShipStation API is REST-based. Authentication uses API key and API secret in the Authorization header. Endpoints cover orders, shipments, carriers, and warehouses. Poll for new orders or use webhooks if available for your plan. Batch operations are supported for bulk label creation. ## Twilio SMS Integration Twilio's REST API requires Account SID and Auth Token. The Messaging API endpoint is /2010-04-01/Accounts/{AccountSid}/Messages.json. For two-way messaging, configure a webhook URL to receive incoming messages. Consider using a queue for high-volume outbound SMS to avoid rate limits. # PentaCodes Technical Reference and Integration Documentation # Version 1.0 | Last Updated March 2025 # This document contains technical reference material for common integrations and deployment procedures. ## QuickBooks Online Integration The QuickBooks Online API uses OAuth 2.0 for authentication. You will need to register your application in the Intuit Developer Portal to obtain client credentials. The base URL for the API is https://quickbooks.api.intuit.com/v3/company/{realmId}. Common endpoints include /invoice, /customer, /payment, and /bill. Rate limits apply: 500 requests per minute for production apps. Always implement exponential backoff for 429 responses. ## Stripe Payment Integration Stripe provides both client-side (Stripe.js) and server-side APIs. For PCI compliance, never pass raw card numbers through your server—use Stripe Elements or the Payment Intents API. Webhooks are essential for handling asynchronous events like payment succeeded or subscription renewed. Configure your webhook endpoint to verify signatures using the Stripe-Signature header. ## ShipStation Integration The ShipStation API is REST-based. Authentication uses API key and API secret in the Authorization header. Endpoints cover orders, shipments, carriers, and warehouses. Poll for new orders or use webhooks if available for your plan. Batch operations are supported for bulk label creation. ## Twilio SMS Integration Twilio's REST API requires Account SID and Auth Token. The Messaging API endpoint is /2010-04-01/Accounts/{AccountSid}/Messages.json. For two-way messaging, configure a webhook URL to receive incoming messages. Consider using a queue for high-volume outbound SMS to avoid rate limits. # PentaCodes Technical Reference and Integration Documentation # Version 1.0 | Last Updated March 2025 # This document contains technical reference material for common integrations and deployment procedures. ## QuickBooks Online Integration The QuickBooks Online API uses OAuth 2.0 for authentication. You will need to register your application in the Intuit Developer Portal to obtain client credentials. The base URL for the API is https://quickbooks.api.intuit.com/v3/company/{realmId}. Common endpoints include /invoice, /customer, /payment, and /bill. Rate limits apply: 500 requests per minute for production apps. Always implement exponential backoff for 429 responses. ## Stripe Payment Integration Stripe provides both client-side (Stripe.js) and server-side APIs. For PCI compliance, never pass raw card numbers through your server—use Stripe Elements or the Payment Intents API. Webhooks are essential for handling asynchronous events like payment succeeded or subscription renewed. Configure your webhook endpoint to verify signatures using the Stripe-Signature header. ## ShipStation Integration The ShipStation API is REST-based. Authentication uses API key and API secret in the Authorization header. Endpoints cover orders, shipments, carriers, and warehouses. Poll for new orders or use webhooks if available for your plan. Batch operations are supported for bulk label creation. ## Twilio SMS Integration Twilio's REST API requires Account SID and Auth Token. The Messaging API endpoint is /2010-04-01/Accounts/{AccountSid}/Messages.json. For two-way messaging, configure a webhook URL to receive incoming messages. Consider using a queue for high-volume outbound SMS to avoid rate limits. # PentaCodes Technical Reference and Integration Documentation # Version 1.0 | Last Updated March 2025 # This document contains technical reference material for common integrations and deployment procedures. ## QuickBooks Online Integration The QuickBooks Online API uses OAuth 2.0 for authentication. You will need to register your application in the Intuit Developer Portal to obtain client credentials. The base URL for the API is https://quickbooks.api.intuit.com/v3/company/{realmId}. Common endpoints include /invoice, /customer, /payment, and /bill. Rate limits apply: 500 requests per minute for production apps. Always implement exponential backoff for 429 responses. ## Stripe Payment Integration Stripe provides both client-side (Stripe.js) and server-side APIs. For PCI compliance, never pass raw card numbers through your server—use Stripe Elements or the Payment Intents API. Webhooks are essential for handling asynchronous events like payment succeeded or subscription renewed. Configure your webhook endpoint to verify signatures using the Stripe-Signature header. ## ShipStation Integration The ShipStation API is REST-based. Authentication uses API key and API secret in the Authorization header. Endpoints cover orders, shipments, carriers, and warehouses. Poll for new orders or use webhooks if available for your plan. Batch operations are supported for bulk label creation. ## Twilio SMS Integration Twilio's REST API requires Account SID and Auth Token. The Messaging API endpoint is /2010-04-01/Accounts/{AccountSid}/Messages.json. For two-way messaging, configure a webhook URL to receive incoming messages. Consider using a queue for high-volume outbound SMS to avoid rate limits. # PentaCodes Technical Reference and Integration Documentation # Version 1.0 | Last Updated March 2025 # This document contains technical reference material for common integrations and deployment procedures. ## QuickBooks Online Integration The QuickBooks Online API uses OAuth 2.0 for authentication. You will need to register your application in the Intuit Developer Portal to obtain client credentials. The base URL for the API is https://quickbooks.api.intuit.com/v3/company/{realmId}. Common endpoints include /invoice, /customer, /payment, and /bill. Rate limits apply: 500 requests per minute for production apps. Always implement exponential backoff for 429 responses. ## Stripe Payment Integration Stripe provides both client-side (Stripe.js) and server-side APIs. For PCI compliance, never pass raw card numbers through your server—use Stripe Elements or the Payment Intents API. Webhooks are essential for handling asynchronous events like payment succeeded or subscription renewed. Configure your webhook endpoint to verify signatures using the Stripe-Signature header. ## ShipStation Integration The ShipStation API is REST-based. Authentication uses API key and API secret in the Authorization header. Endpoints cover orders, shipments, carriers, and warehouses. Poll for new orders or use webhooks if available for your plan. Batch operations are supported for bulk label creation. ## Twilio SMS Integration Twilio's REST API requires Account SID and Auth Token. The Messaging API endpoint is /2010-04-01/Accounts/{AccountSid}/Messages.json. For two-way messaging, configure a webhook URL to receive incoming messages. Consider using a queue for high-volume outbound SMS to avoid rate limits. # PentaCodes Technical Reference and Integration Documentation # Version 1.0 | Last Updated March 2025 # This document contains technical reference material for common integrations and deployment procedures. ## QuickBooks Online Integration The QuickBooks Online API uses OAuth 2.0 for authentication. You will need to register your application in the Intuit Developer Portal to obtain client credentials. The base URL for the API is https://quickbooks.api.intuit.com/v3/company/{realmId}. Common endpoints include /invoice, /customer, /payment, and /bill. Rate limits apply: 500 requests per minute for production apps. Always implement exponential backoff for 429 responses. ## Stripe Payment Integration Stripe provides both client-side (Stripe.js) and server-side APIs. For PCI compliance, never pass raw card numbers through your server—use Stripe Elements or the Payment Intents API. Webhooks are essential for handling asynchronous events like payment succeeded or subscription renewed. Configure your webhook endpoint to verify signatures using the Stripe-Signature header. ## ShipStation Integration The ShipStation API is REST-based. Authentication uses API key and API secret in the Authorization header. Endpoints cover orders, shipments, carriers, and warehouses. Poll for new orders or use webhooks if available for your plan. Batch operations are supported for bulk label creation. ## Twilio SMS Integration Twilio's REST API requires Account SID and Auth Token. The Messaging API endpoint is /2010-04-01/Accounts/{AccountSid}/Messages.json. For two-way messaging, configure a webhook URL to receive incoming messages. Consider using a queue for high-volume outbound SMS to avoid rate limits. # PentaCodes Technical Reference and Integration Documentation # Version 1.0 | Last Updated March 2025 # This document contains technical reference material for common integrations and deployment procedures. ## QuickBooks Online Integration The QuickBooks Online API uses OAuth 2.0 for authentication. You will need to register your application in the Intuit Developer Portal to obtain client credentials. The base URL for the API is https://quickbooks.api.intuit.com/v3/company/{realmId}. Common endpoints include /invoice, /customer, /payment, and /bill. Rate limits apply: 500 requests per minute for production apps. Always implement exponential backoff for 429 responses. ## Stripe Payment Integration Stripe provides both client-side (Stripe.js) and server-side APIs. For PCI compliance, never pass raw card numbers through your server—use Stripe Elements or the Payment Intents API. Webhooks are essential for handling asynchronous events like payment succeeded or subscription renewed. Configure your webhook endpoint to verify signatures using the Stripe-Signature header. ## ShipStation Integration The ShipStation API is REST-based. Authentication uses API key and API secret in the Authorization header. Endpoints cover orders, shipments, carriers, and warehouses. Poll for new orders or use webhooks if available for your plan. Batch operations are supported for bulk label creation. ## Twilio SMS Integration Twilio's REST API requires Account SID and Auth Token. The Messaging API endpoint is /2010-04-01/Accounts/{AccountSid}/Messages.json. For two-way messaging, configure a webhook URL to receive incoming messages. Consider using a queue for high-volume outbound SMS to avoid rate limits. # PentaCodes Technical Reference and Integration Documentation # Version 1.0 | Last Updated March 2025 # This document contains technical reference material for common integrations and deployment procedures. ## QuickBooks Online Integration The QuickBooks Online API uses OAuth 2.0 for authentication. You will need to register your application in the Intuit Developer Portal to obtain client credentials. The base URL for the API is https://quickbooks.api.intuit.com/v3/company/{realmId}. Common endpoints include /invoice, /customer, /payment, and /bill. Rate limits apply: 500 requests per minute for production apps. Always implement exponential backoff for 429 responses. ## Stripe Payment Integration Stripe provides both client-side (Stripe.js) and server-side APIs. For PCI compliance, never pass raw card numbers through your server—use Stripe Elements or the Payment Intents API. Webhooks are essential for handling asynchronous events like payment succeeded or subscription renewed. Configure your webhook endpoint to verify signatures using the Stripe-Signature header. ## ShipStation Integration The ShipStation API is REST-based. Authentication uses API key and API secret in the Authorization header. Endpoints cover orders, shipments, carriers, and warehouses. Poll for new orders or use webhooks if available for your plan. Batch operations are supported for bulk label creation. ## Twilio SMS Integration Twilio's REST API requires Account SID and Auth Token. The Messaging API endpoint is /2010-04-01/Accounts/{AccountSid}/Messages.json. For two-way messaging, configure a webhook URL to receive incoming messages. Consider using a queue for high-volume outbound SMS to avoid rate limits. # PentaCodes Technical Reference and Integration Documentation # Version 1.0 | Last Updated March 2025 # This document contains technical reference material for common integrations and deployment procedures. ## QuickBooks Online Integration The QuickBooks Online API uses OAuth 2.0 for authentication. You will need to register your application in the Intuit Developer Portal to obtain client credentials. The base URL for the API is https://quickbooks.api.intuit.com/v3/company/{realmId}. Common endpoints include /invoice, /customer, /payment, and /bill. Rate limits apply: 500 requests per minute for production apps. Always implement exponential backoff for 429 responses. ## Stripe Payment Integration Stripe provides both client-side (Stripe.js) and server-side APIs. For PCI compliance, never pass raw card numbers through your server—use Stripe Elements or the Payment Intents API. Webhooks are essential for handling asynchronous events like payment succeeded or subscription renewed. Configure your webhook endpoint to verify signatures using the Stripe-Signature header. ## ShipStation Integration The ShipStation API is REST-based. Authentication uses API key and API secret in the Authorization header. Endpoints cover orders, shipments, carriers, and warehouses. Poll for new orders or use webhooks if available for your plan. Batch operations are supported for bulk label creation. ## Twilio SMS Integration Twilio's REST API requires Account SID and Auth Token. The Messaging API endpoint is /2010-04-01/Accounts/{AccountSid}/Messages.json. For two-way messaging, configure a webhook URL to receive incoming messages. Consider using a queue for high-volume outbound SMS to avoid rate limits. # PentaCodes Technical Reference and Integration Documentation # Version 1.0 | Last Updated March 2025 # This document contains technical reference material for common integrations and deployment procedures. ## QuickBooks Online Integration The QuickBooks Online API uses OAuth 2.0 for authentication. You will need to register your application in the Intuit Developer Portal to obtain client credentials. The base URL for the API is https://quickbooks.api.intuit.com/v3/company/{realmId}. Common endpoints include /invoice, /customer, /payment, and /bill. Rate limits apply: 500 requests per minute for production apps. Always implement exponential backoff for 429 responses. ## Stripe Payment Integration Stripe provides both client-side (Stripe.js) and server-side APIs. For PCI compliance, never pass raw card numbers through your server—use Stripe Elements or the Payment Intents API. Webhooks are essential for handling asynchronous events like payment succeeded or subscription renewed. Configure your webhook endpoint to verify signatures using the Stripe-Signature header. ## ShipStation Integration The ShipStation API is REST-based. Authentication uses API key and API secret in the Authorization header. Endpoints cover orders, shipments, carriers, and warehouses. Poll for new orders or use webhooks if available for your plan. Batch operations are supported for bulk label creation. ## Twilio SMS Integration Twilio's REST API requires Account SID and Auth Token. The Messaging API endpoint is /2010-04-01/Accounts/{AccountSid}/Messages.json. For two-way messaging, configure a webhook URL to receive incoming messages. Consider using a queue for high-volume outbound SMS to avoid rate limits. # PentaCodes Technical Reference and Integration Documentation # Version 1.0 | Last Updated March 2025 # This document contains technical reference material for common integrations and deployment procedures. ## QuickBooks Online Integration The QuickBooks Online API uses OAuth 2.0 for authentication. You will need to register your application in the Intuit Developer Portal to obtain client credentials. The base URL for the API is https://quickbooks.api.intuit.com/v3/company/{realmId}. Common endpoints include /invoice, /customer, /payment, and /bill. Rate limits apply: 500 requests per minute for production apps. Always implement exponential backoff for 429 responses. ## Stripe Payment Integration Stripe provides both client-side (Stripe.js) and server-side APIs. For PCI compliance, never pass raw card numbers through your server—use Stripe Elements or the Payment Intents API. Webhooks are essential for handling asynchronous events like payment succeeded or subscription renewed. Configure your webhook endpoint to verify signatures using the Stripe-Signature header. ## ShipStation Integration The ShipStation API is REST-based. Authentication uses API key and API secret in the Authorization header. Endpoints cover orders, shipments, carriers, and warehouses. Poll for new orders or use webhooks if available for your plan. Batch operations are supported for bulk label creation. ## Twilio SMS Integration Twilio's REST API requires Account SID and Auth Token. The Messaging API endpoint is /2010-04-01/Accounts/{AccountSid}/Messages.json. For two-way messaging, configure a webhook URL to receive incoming messages. Consider using a queue for high-volume outbound SMS to avoid rate limits. # PentaCodes Technical Reference and Integration Documentation # Version 1.0 | Last Updated March 2025 # This document contains technical reference material for common integrations and deployment procedures. ## QuickBooks Online Integration The QuickBooks Online API uses OAuth 2.0 for authentication. You will need to register your application in the Intuit Developer Portal to obtain client credentials. The base URL for the API is https://quickbooks.api.intuit.com/v3/company/{realmId}. Common endpoints include /invoice, /customer, /payment, and /bill. Rate limits apply: 500 requests per minute for production apps. Always implement exponential backoff for 429 responses. ## Stripe Payment Integration Stripe provides both client-side (Stripe.js) and server-side APIs. For PCI compliance, never pass raw card numbers through your server—use Stripe Elements or the Payment Intents API. Webhooks are essential for handling asynchronous events like payment succeeded or subscription renewed. Configure your webhook endpoint to verify signatures using the Stripe-Signature header. ## ShipStation Integration The ShipStation API is REST-based. Authentication uses API key and API secret in the Authorization header. Endpoints cover orders, shipments, carriers, and warehouses. Poll for new orders or use webhooks if available for your plan. Batch operations are supported for bulk label creation. ## Twilio SMS Integration Twilio's REST API requires Account SID and Auth Token. The Messaging API endpoint is /2010-04-01/Accounts/{AccountSid}/Messages.json. For two-way messaging, configure a webhook URL to receive incoming messages. Consider using a queue for high-volume outbound SMS to avoid rate limits. # PentaCodes Technical Reference and Integration Documentation # Version 1.0 | Last Updated March 2025 # This document contains technical reference material for common integrations and deployment procedures. ## QuickBooks Online Integration The QuickBooks Online API uses OAuth 2.0 for authentication. You will need to register your application in the Intuit Developer Portal to obtain client credentials. The base URL for the API is https://quickbooks.api.intuit.com/v3/company/{realmId}. Common endpoints include /invoice, /customer, /payment, and /bill. Rate limits apply: 500 requests per minute for production apps. Always implement exponential backoff for 429 responses. ## Stripe Payment Integration Stripe provides both client-side (Stripe.js) and server-side APIs. For PCI compliance, never pass raw card numbers through your server—use Stripe Elements or the Payment Intents API. Webhooks are essential for handling asynchronous events like payment succeeded or subscription renewed. Configure your webhook endpoint to verify signatures using the Stripe-Signature header. ## ShipStation Integration The ShipStation API is REST-based. Authentication uses API key and API secret in the Authorization header. Endpoints cover orders, shipments, carriers, and warehouses. Poll for new orders or use webhooks if available for your plan. Batch operations are supported for bulk label creation. ## Twilio SMS Integration Twilio's REST API requires Account SID and Auth Token. The Messaging API endpoint is /2010-04-01/Accounts/{AccountSid}/Messages.json. For two-way messaging, configure a webhook URL to receive incoming messages. Consider using a queue for high-volume outbound SMS to avoid rate limits. # PentaCodes Technical Reference and Integration Documentation # Version 1.0 | Last Updated March 2025 # This document contains technical reference material for common integrations and deployment procedures. ## QuickBooks Online Integration The QuickBooks Online API uses OAuth 2.0 for authentication. You will need to register your application in the Intuit Developer Portal to obtain client credentials. The base URL for the API is https://quickbooks.api.intuit.com/v3/company/{realmId}. Common endpoints include /invoice, /customer, /payment, and /bill. Rate limits apply: 500 requests per minute for production apps. Always implement exponential backoff for 429 responses. ## Stripe Payment Integration Stripe provides both client-side (Stripe.js) and server-side APIs. For PCI compliance, never pass raw card numbers through your server—use Stripe Elements or the Payment Intents API. Webhooks are essential for handling asynchronous events like payment succeeded or subscription renewed. Configure your webhook endpoint to verify signatures using the Stripe-Signature header. ## ShipStation Integration The ShipStation API is REST-based. Authentication uses API key and API secret in the Authorization header. Endpoints cover orders, shipments, carriers, and warehouses. Poll for new orders or use webhooks if available for your plan. Batch operations are supported for bulk label creation. ## Twilio SMS Integration Twilio's REST API requires Account SID and Auth Token. The Messaging API endpoint is /2010-04-01/Accounts/{AccountSid}/Messages.json. For two-way messaging, configure a webhook URL to receive incoming messages. Consider using a queue for high-volume outbound SMS to avoid rate limits. # PentaCodes Technical Reference and Integration Documentation # Version 1.0 | Last Updated March 2025 # This document contains technical reference material for common integrations and deployment procedures. ## QuickBooks Online Integration The QuickBooks Online API uses OAuth 2.0 for authentication. You will need to register your application in the Intuit Developer Portal to obtain client credentials. The base URL for the API is https://quickbooks.api.intuit.com/v3/company/{realmId}. Common endpoints include /invoice, /customer, /payment, and /bill. Rate limits apply: 500 requests per minute for production apps. Always implement exponential backoff for 429 responses. ## Stripe Payment Integration Stripe provides both client-side (Stripe.js) and server-side APIs. For PCI compliance, never pass raw card numbers through your server—use Stripe Elements or the Payment Intents API. Webhooks are essential for handling asynchronous events like payment succeeded or subscription renewed. Configure your webhook endpoint to verify signatures using the Stripe-Signature header. ## ShipStation Integration The ShipStation API is REST-based. Authentication uses API key and API secret in the Authorization header. Endpoints cover orders, shipments, carriers, and warehouses. Poll for new orders or use webhooks if available for your plan. Batch operations are supported for bulk label creation. ## Twilio SMS Integration Twilio's REST API requires Account SID and Auth Token. The Messaging API endpoint is /2010-04-01/Accounts/{AccountSid}/Messages.json. For two-way messaging, configure a webhook URL to receive incoming messages. Consider using a queue for high-volume outbound SMS to avoid rate limits. # PentaCodes Technical Reference and Integration Documentation # Version 1.0 | Last Updated March 2025 # This document contains technical reference material for common integrations and deployment procedures. ## QuickBooks Online Integration The QuickBooks Online API uses OAuth 2.0 for authentication. You will need to register your application in the Intuit Developer Portal to obtain client credentials. The base URL for the API is https://quickbooks.api.intuit.com/v3/company/{realmId}. Common endpoints include /invoice, /customer, /payment, and /bill. Rate limits apply: 500 requests per minute for production apps. Always implement exponential backoff for 429 responses. ## Stripe Payment Integration Stripe provides both client-side (Stripe.js) and server-side APIs. For PCI compliance, never pass raw card numbers through your server—use Stripe Elements or the Payment Intents API. Webhooks are essential for handling asynchronous events like payment succeeded or subscription renewed. Configure your webhook endpoint to verify signatures using the Stripe-Signature header. ## ShipStation Integration The ShipStation API is REST-based. Authentication uses API key and API secret in the Authorization header. Endpoints cover orders, shipments, carriers, and warehouses. Poll for new orders or use webhooks if available for your plan. Batch operations are supported for bulk label creation. ## Twilio SMS Integration Twilio's REST API requires Account SID and Auth Token. The Messaging API endpoint is /2010-04-01/Accounts/{AccountSid}/Messages.json. For two-way messaging, configure a webhook URL to receive incoming messages. Consider using a queue for high-volume outbound SMS to avoid rate limits. # PentaCodes Technical Reference and Integration Documentation # Version 1.0 | Last Updated March 2025 # This document contains technical reference material for common integrations and deployment procedures. ## QuickBooks Online Integration The QuickBooks Online API uses OAuth 2.0 for authentication. You will need to register your application in the Intuit Developer Portal to obtain client credentials. The base URL for the API is https://quickbooks.api.intuit.com/v3/company/{realmId}. Common endpoints include /invoice, /customer, /payment, and /bill. Rate limits apply: 500 requests per minute for production apps. Always implement exponential backoff for 429 responses. ## Stripe Payment Integration Stripe provides both client-side (Stripe.js) and server-side APIs. For PCI compliance, never pass raw card numbers through your server—use Stripe Elements or the Payment Intents API. Webhooks are essential for handling asynchronous events like payment succeeded or subscription renewed. Configure your webhook endpoint to verify signatures using the Stripe-Signature header. ## ShipStation Integration The ShipStation API is REST-based. Authentication uses API key and API secret in the Authorization header. Endpoints cover orders, shipments, carriers, and warehouses. Poll for new orders or use webhooks if available for your plan. Batch operations are supported for bulk label creation. ## Twilio SMS Integration Twilio's REST API requires Account SID and Auth Token. The Messaging API endpoint is /2010-04-01/Accounts/{AccountSid}/Messages.json. For two-way messaging, configure a webhook URL to receive incoming messages. Consider using a queue for high-volume outbound SMS to avoid rate limits. # PentaCodes Technical Reference and Integration Documentation # Version 1.0 | Last Updated March 2025 # This document contains technical reference material for common integrations and deployment procedures. ## QuickBooks Online Integration The QuickBooks Online API uses OAuth 2.0 for authentication. You will need to register your application in the Intuit Developer Portal to obtain client credentials. The base URL for the API is https://quickbooks.api.intuit.com/v3/company/{realmId}. Common endpoints include /invoice, /customer, /payment, and /bill. Rate limits apply: 500 requests per minute for production apps. Always implement exponential backoff for 429 responses. ## Stripe Payment Integration Stripe provides both client-side (Stripe.js) and server-side APIs. For PCI compliance, never pass raw card numbers through your server—use Stripe Elements or the Payment Intents API. Webhooks are essential for handling asynchronous events like payment succeeded or subscription renewed. Configure your webhook endpoint to verify signatures using the Stripe-Signature header. ## ShipStation Integration The ShipStation API is REST-based. Authentication uses API key and API secret in the Authorization header. Endpoints cover orders, shipments, carriers, and warehouses. Poll for new orders or use webhooks if available for your plan. Batch operations are supported for bulk label creation. ## Twilio SMS Integration Twilio's REST API requires Account SID and Auth Token. The Messaging API endpoint is /2010-04-01/Accounts/{AccountSid}/Messages.json. For two-way messaging, configure a webhook URL to receive incoming messages. Consider using a queue for high-volume outbound SMS to avoid rate limits. # PentaCodes Technical Reference and Integration Documentation # Version 1.0 | Last Updated March 2025 # This document contains technical reference material for common integrations and deployment procedures. ## QuickBooks Online Integration The QuickBooks Online API uses OAuth 2.0 for authentication. You will need to register your application in the Intuit Developer Portal to obtain client credentials. The base URL for the API is https://quickbooks.api.intuit.com/v3/company/{realmId}. Common endpoints include /invoice, /customer, /payment, and /bill. Rate limits apply: 500 requests per minute for production apps. Always implement exponential backoff for 429 responses. ## Stripe Payment Integration Stripe provides both client-side (Stripe.js) and server-side APIs. For PCI compliance, never pass raw card numbers through your server—use Stripe Elements or the Payment Intents API. Webhooks are essential for handling asynchronous events like payment succeeded or subscription renewed. Configure your webhook endpoint to verify signatures using the Stripe-Signature header. ## ShipStation Integration The ShipStation API is REST-based. Authentication uses API key and API secret in the Authorization header. Endpoints cover orders, shipments, carriers, and warehouses. Poll for new orders or use webhooks if available for your plan. Batch operations are supported for bulk label creation. ## Twilio SMS Integration Twilio's REST API requires Account SID and Auth Token. The Messaging API endpoint is /2010-04-01/Accounts/{AccountSid}/Messages.json. For two-way messaging, configure a webhook URL to receive incoming messages. Consider using a queue for high-volume outbound SMS to avoid rate limits. # PentaCodes Technical Reference and Integration Documentation # Version 1.0 | Last Updated March 2025 # This document contains technical reference material for common integrations and deployment procedures. ## QuickBooks Online Integration The QuickBooks Online API uses OAuth 2.0 for authentication. You will need to register your application in the Intuit Developer Portal to obtain client credentials. The base URL for the API is https://quickbooks.api.intuit.com/v3/company/{realmId}. Common endpoints include /invoice, /customer, /payment, and /bill. Rate limits apply: 500 requests per minute for production apps. Always implement exponential backoff for 429 responses. ## Stripe Payment Integration Stripe provides both client-side (Stripe.js) and server-side APIs. For PCI compliance, never pass raw card numbers through your server—use Stripe Elements or the Payment Intents API. Webhooks are essential for handling asynchronous events like payment succeeded or subscription renewed. Configure your webhook endpoint to verify signatures using the Stripe-Signature header. ## ShipStation Integration The ShipStation API is REST-based. Authentication uses API key and API secret in the Authorization header. Endpoints cover orders, shipments, carriers, and warehouses. Poll for new orders or use webhooks if available for your plan. Batch operations are supported for bulk label creation. ## Twilio SMS Integration Twilio's REST API requires Account SID and Auth Token. The Messaging API endpoint is /2010-04-01/Accounts/{AccountSid}/Messages.json. For two-way messaging, configure a webhook URL to receive incoming messages. Consider using a queue for high-volume outbound SMS to avoid rate limits. # PentaCodes Technical Reference and Integration Documentation # Version 1.0 | Last Updated March 2025 # This document contains technical reference material for common integrations and deployment procedures. ## QuickBooks Online Integration The QuickBooks Online API uses OAuth 2.0 for authentication. You will need to register your application in the Intuit Developer Portal to obtain client credentials. The base URL for the API is https://quickbooks.api.intuit.com/v3/company/{realmId}. Common endpoints include /invoice, /customer, /payment, and /bill. Rate limits apply: 500 requests per minute for production apps. Always implement exponential backoff for 429 responses. ## Stripe Payment Integration Stripe provides both client-side (Stripe.js) and server-side APIs. For PCI compliance, never pass raw card numbers through your server—use Stripe Elements or the Payment Intents API. Webhooks are essential for handling asynchronous events like payment succeeded or subscription renewed. Configure your webhook endpoint to verify signatures using the Stripe-Signature header. ## ShipStation Integration The ShipStation API is REST-based. Authentication uses API key and API secret in the Authorization header. Endpoints cover orders, shipments, carriers, and warehouses. Poll for new orders or use webhooks if available for your plan. Batch operations are supported for bulk label creation. ## Twilio SMS Integration Twilio's REST API requires Account SID and Auth Token. The Messaging API endpoint is /2010-04-01/Accounts/{AccountSid}/Messages.json. For two-way messaging, configure a webhook URL to receive incoming messages. Consider using a queue for high-volume outbound SMS to avoid rate limits. # PentaCodes Technical Reference and Integration Documentation # Version 1.0 | Last Updated March 2025 # This document contains technical reference material for common integrations and deployment procedures. ## QuickBooks Online Integration The QuickBooks Online API uses OAuth 2.0 for authentication. You will need to register your application in the Intuit Developer Portal to obtain client credentials. The base URL for the API is https://quickbooks.api.intuit.com/v3/company/{realmId}. Common endpoints include /invoice, /customer, /payment, and /bill. Rate limits apply: 500 requests per minute for production apps. Always implement exponential backoff for 429 responses. ## Stripe Payment Integration Stripe provides both client-side (Stripe.js) and server-side APIs. For PCI compliance, never pass raw card numbers through your server—use Stripe Elements or the Payment Intents API. Webhooks are essential for handling asynchronous events like payment succeeded or subscription renewed. Configure your webhook endpoint to verify signatures using the Stripe-Signature header. ## ShipStation Integration The ShipStation API is REST-based. Authentication uses API key and API secret in the Authorization header. Endpoints cover orders, shipments, carriers, and warehouses. Poll for new orders or use webhooks if available for your plan. Batch operations are supported for bulk label creation. ## Twilio SMS Integration Twilio's REST API requires Account SID and Auth Token. The Messaging API endpoint is /2010-04-01/Accounts/{AccountSid}/Messages.json. For two-way messaging, configure a webhook URL to receive incoming messages. Consider using a queue for high-volume outbound SMS to avoid rate limits. # PentaCodes Technical Reference and Integration Documentation # Version 1.0 | Last Updated March 2025 # This document contains technical reference material for common integrations and deployment procedures. ## QuickBooks Online Integration The QuickBooks Online API uses OAuth 2.0 for authentication. You will need to register your application in the Intuit Developer Portal to obtain client credentials. The base URL for the API is https://quickbooks.api.intuit.com/v3/company/{realmId}. Common endpoints include /invoice, /customer, /payment, and /bill. Rate limits apply: 500 requests per minute for production apps. Always implement exponential backoff for 429 responses. ## Stripe Payment Integration Stripe provides both client-side (Stripe.js) and server-side APIs. For PCI compliance, never pass raw card numbers through your server—use Stripe Elements or the Payment Intents API. Webhooks are essential for handling asynchronous events like payment succeeded or subscription renewed. Configure your webhook endpoint to verify signatures using the Stripe-Signature header. ## ShipStation Integration The ShipStation API is REST-based. Authentication uses API key and API secret in the Authorization header. Endpoints cover orders, shipments, carriers, and warehouses. Poll for new orders or use webhooks if available for your plan. Batch operations are supported for bulk label creation. ## Twilio SMS Integration Twilio's REST API requires Account SID and Auth Token. The Messaging API endpoint is /2010-04-01/Accounts/{AccountSid}/Messages.json. For two-way messaging, configure a webhook URL to receive incoming messages. Consider using a queue for high-volume outbound SMS to avoid rate limits. # PentaCodes Technical Reference and Integration Documentation # Version 1.0 | Last Updated March 2025 # This document contains technical reference material for common integrations and deployment procedures. ## QuickBooks Online Integration The QuickBooks Online API uses OAuth 2.0 for authentication. You will need to register your application in the Intuit Developer Portal to obtain client credentials. The base URL for the API is https://quickbooks.api.intuit.com/v3/company/{realmId}. Common endpoints include /invoice, /customer, /payment, and /bill. Rate limits apply: 500 requests per minute for production apps. Always implement exponential backoff for 429 responses. ## Stripe Payment Integration Stripe provides both client-side (Stripe.js) and server-side APIs. For PCI compliance, never pass raw card numbers through your server—use Stripe Elements or the Payment Intents API. Webhooks are essential for handling asynchronous events like payment succeeded or subscription renewed. Configure your webhook endpoint to verify signatures using the Stripe-Signature header. ## ShipStation Integration The ShipStation API is REST-based. Authentication uses API key and API secret in the Authorization header. Endpoints cover orders, shipments, carriers, and warehouses. Poll for new orders or use webhooks if available for your plan. Batch operations are supported for bulk label creation. ## Twilio SMS Integration Twilio's REST API requires Account SID and Auth Token. The Messaging API endpoint is /2010-04-01/Accounts/{AccountSid}/Messages.json. For two-way messaging, configure a webhook URL to receive incoming messages. Consider using a queue for high-volume outbound SMS to avoid rate limits. # PentaCodes Technical Reference and Integration Documentation # Version 1.0 | Last Updated March 2025 # This document contains technical reference material for common integrations and deployment procedures. ## QuickBooks Online Integration The QuickBooks Online API uses OAuth 2.0 for authentication. You will need to register your application in the Intuit Developer Portal to obtain client credentials. The base URL for the API is https://quickbooks.api.intuit.com/v3/company/{realmId}. Common endpoints include /invoice, /customer, /payment, and /bill. Rate limits apply: 500 requests per minute for production apps. Always implement exponential backoff for 429 responses. ## Stripe Payment Integration Stripe provides both client-side (Stripe.js) and server-side APIs. For PCI compliance, never pass raw card numbers through your server—use Stripe Elements or the Payment Intents API. Webhooks are essential for handling asynchronous events like payment succeeded or subscription renewed. Configure your webhook endpoint to verify signatures using the Stripe-Signature header. ## ShipStation Integration The ShipStation API is REST-based. Authentication uses API key and API secret in the Authorization header. Endpoints cover orders, shipments, carriers, and warehouses. Poll for new orders or use webhooks if available for your plan. Batch operations are supported for bulk label creation. ## Twilio SMS Integration Twilio's REST API requires Account SID and Auth Token. The Messaging API endpoint is /2010-04-01/Accounts/{AccountSid}/Messages.json. For two-way messaging, configure a webhook URL to receive incoming messages. Consider using a queue for high-volume outbound SMS to avoid rate limits. # PentaCodes Technical Reference and Integration Documentation # Version 1.0 | Last Updated March 2025 # This document contains technical reference material for common integrations and deployment procedures. ## QuickBooks Online Integration The QuickBooks Online API uses OAuth 2.0 for authentication. You will need to register your application in the Intuit Developer Portal to obtain client credentials. The base URL for the API is https://quickbooks.api.intuit.com/v3/company/{realmId}. Common endpoints include /invoice, /customer, /payment, and /bill. Rate limits apply: 500 requests per minute for production apps. Always implement exponential backoff for 429 responses. ## Stripe Payment Integration Stripe provides both client-side (Stripe.js) and server-side APIs. For PCI compliance, never pass raw card numbers through your server—use Stripe Elements or the Payment Intents API. Webhooks are essential for handling asynchronous events like payment succeeded or subscription renewed. Configure your webhook endpoint to verify signatures using the Stripe-Signature header. ## ShipStation Integration The ShipStation API is REST-based. Authentication uses API key and API secret in the Authorization header. Endpoints cover orders, shipments, carriers, and warehouses. Poll for new orders or use webhooks if available for your plan. Batch operations are supported for bulk label creation. ## Twilio SMS Integration Twilio's REST API requires Account SID and Auth Token. The Messaging API endpoint is /2010-04-01/Accounts/{AccountSid}/Messages.json. For two-way messaging, configure a webhook URL to receive incoming messages. Consider using a queue for high-volume outbound SMS to avoid rate limits. # PentaCodes Technical Reference and Integration Documentation # Version 1.0 | Last Updated March 2025 # This document contains technical reference material for common integrations and deployment procedures. ## QuickBooks Online Integration The QuickBooks Online API uses OAuth 2.0 for authentication. You will need to register your application in the Intuit Developer Portal to obtain client credentials. The base URL for the API is https://quickbooks.api.intuit.com/v3/company/{realmId}. Common endpoints include /invoice, /customer, /payment, and /bill. Rate limits apply: 500 requests per minute for production apps. Always implement exponential backoff for 429 responses. ## Stripe Payment Integration Stripe provides both client-side (Stripe.js) and server-side APIs. For PCI compliance, never pass raw card numbers through your server—use Stripe Elements or the Payment Intents API. Webhooks are essential for handling asynchronous events like payment succeeded or subscription renewed. Configure your webhook endpoint to verify signatures using the Stripe-Signature header. ## ShipStation Integration The ShipStation API is REST-based. Authentication uses API key and API secret in the Authorization header. Endpoints cover orders, shipments, carriers, and warehouses. Poll for new orders or use webhooks if available for your plan. Batch operations are supported for bulk label creation. ## Twilio SMS Integration Twilio's REST API requires Account SID and Auth Token. The Messaging API endpoint is /2010-04-01/Accounts/{AccountSid}/Messages.json. For two-way messaging, configure a webhook URL to receive incoming messages. Consider using a queue for high-volume outbound SMS to avoid rate limits. # PentaCodes Technical Reference and Integration Documentation # Version 1.0 | Last Updated March 2025 # This document contains technical reference material for common integrations and deployment procedures. ## QuickBooks Online Integration The QuickBooks Online API uses OAuth 2.0 for authentication. You will need to register your application in the Intuit Developer Portal to obtain client credentials. The base URL for the API is https://quickbooks.api.intuit.com/v3/company/{realmId}. Common endpoints include /invoice, /customer, /payment, and /bill. Rate limits apply: 500 requests per minute for production apps. Always implement exponential backoff for 429 responses. ## Stripe Payment Integration Stripe provides both client-side (Stripe.js) and server-side APIs. For PCI compliance, never pass raw card numbers through your server—use Stripe Elements or the Payment Intents API. Webhooks are essential for handling asynchronous events like payment succeeded or subscription renewed. Configure your webhook endpoint to verify signatures using the Stripe-Signature header. ## ShipStation Integration The ShipStation API is REST-based. Authentication uses API key and API secret in the Authorization header. Endpoints cover orders, shipments, carriers, and warehouses. Poll for new orders or use webhooks if available for your plan. Batch operations are supported for bulk label creation. ## Twilio SMS Integration Twilio's REST API requires Account SID and Auth Token. The Messaging API endpoint is /2010-04-01/Accounts/{AccountSid}/Messages.json. For two-way messaging, configure a webhook URL to receive incoming messages. Consider using a queue for high-volume outbound SMS to avoid rate limits. # PentaCodes Technical Reference and Integration Documentation # Version 1.0 | Last Updated March 2025 # This document contains technical reference material for common integrations and deployment procedures. ## QuickBooks Online Integration The QuickBooks Online API uses OAuth 2.0 for authentication. You will need to register your application in the Intuit Developer Portal to obtain client credentials. The base URL for the API is https://quickbooks.api.intuit.com/v3/company/{realmId}. Common endpoints include /invoice, /customer, /payment, and /bill. Rate limits apply: 500 requests per minute for production apps. Always implement exponential backoff for 429 responses. ## Stripe Payment Integration Stripe provides both client-side (Stripe.js) and server-side APIs. For PCI compliance, never pass raw card numbers through your server—use Stripe Elements or the Payment Intents API. Webhooks are essential for handling asynchronous events like payment succeeded or subscription renewed. Configure your webhook endpoint to verify signatures using the Stripe-Signature header. ## ShipStation Integration The ShipStation API is REST-based. Authentication uses API key and API secret in the Authorization header. Endpoints cover orders, shipments, carriers, and warehouses. Poll for new orders or use webhooks if available for your plan. Batch operations are supported for bulk label creation. ## Twilio SMS Integration Twilio's REST API requires Account SID and Auth Token. The Messaging API endpoint is /2010-04-01/Accounts/{AccountSid}/Messages.json. For two-way messaging, configure a webhook URL to receive incoming messages. Consider using a queue for high-volume outbound SMS to avoid rate limits. # PentaCodes Technical Reference and Integration Documentation # Version 1.0 | Last Updated March 2025 # This document contains technical reference material for common integrations and deployment procedures. ## QuickBooks Online Integration The QuickBooks Online API uses OAuth 2.0 for authentication. You will need to register your application in the Intuit Developer Portal to obtain client credentials. The base URL for the API is https://quickbooks.api.intuit.com/v3/company/{realmId}. Common endpoints include /invoice, /customer, /payment, and /bill. Rate limits apply: 500 requests per minute for production apps. Always implement exponential backoff for 429 responses. ## Stripe Payment Integration Stripe provides both client-side (Stripe.js) and server-side APIs. For PCI compliance, never pass raw card numbers through your server—use Stripe Elements or the Payment Intents API. Webhooks are essential for handling asynchronous events like payment succeeded or subscription renewed. Configure your webhook endpoint to verify signatures using the Stripe-Signature header. ## ShipStation Integration The ShipStation API is REST-based. Authentication uses API key and API secret in the Authorization header. Endpoints cover orders, shipments, carriers, and warehouses. Poll for new orders or use webhooks if available for your plan. Batch operations are supported for bulk label creation. ## Twilio SMS Integration Twilio's REST API requires Account SID and Auth Token. The Messaging API endpoint is /2010-04-01/Accounts/{AccountSid}/Messages.json. For two-way messaging, configure a webhook URL to receive incoming messages. Consider using a queue for high-volume outbound SMS to avoid rate limits. # PentaCodes Technical Reference and Integration Documentation # Version 1.0 | Last Updated March 2025 # This document contains technical reference material for common integrations and deployment procedures. ## QuickBooks Online Integration The QuickBooks Online API uses OAuth 2.0 for authentication. You will need to register your application in the Intuit Developer Portal to obtain client credentials. The base URL for the API is https://quickbooks.api.intuit.com/v3/company/{realmId}. Common endpoints include /invoice, /customer, /payment, and /bill. Rate limits apply: 500 requests per minute for production apps. Always implement exponential backoff for 429 responses. ## Stripe Payment Integration Stripe provides both client-side (Stripe.js) and server-side APIs. For PCI compliance, never pass raw card numbers through your server—use Stripe Elements or the Payment Intents API. Webhooks are essential for handling asynchronous events like payment succeeded or subscription renewed. Configure your webhook endpoint to verify signatures using the Stripe-Signature header. ## ShipStation Integration The ShipStation API is REST-based. Authentication uses API key and API secret in the Authorization header. Endpoints cover orders, shipments, carriers, and warehouses. Poll for new orders or use webhooks if available for your plan. Batch operations are supported for bulk label creation. ## Twilio SMS Integration Twilio's REST API requires Account SID and Auth Token. The Messaging API endpoint is /2010-04-01/Accounts/{AccountSid}/Messages.json. For two-way messaging, configure a webhook URL to receive incoming messages. Consider using a queue for high-volume outbound SMS to avoid rate limits. # PentaCodes Technical Reference and Integration Documentation # Version 1.0 | Last Updated March 2025 # This document contains technical reference material for common integrations and deployment procedures. ## QuickBooks Online Integration The QuickBooks Online API uses OAuth 2.0 for authentication. You will need to register your application in the Intuit Developer Portal to obtain client credentials. The base URL for the API is https://quickbooks.api.intuit.com/v3/company/{realmId}. Common endpoints include /invoice, /customer, /payment, and /bill. Rate limits apply: 500 requests per minute for production apps. Always implement exponential backoff for 429 responses. ## Stripe Payment Integration Stripe provides both client-side (Stripe.js) and server-side APIs. For PCI compliance, never pass raw card numbers through your server—use Stripe Elements or the Payment Intents API. Webhooks are essential for handling asynchronous events like payment succeeded or subscription renewed. Configure your webhook endpoint to verify signatures using the Stripe-Signature header. ## ShipStation Integration The ShipStation API is REST-based. Authentication uses API key and API secret in the Authorization header. Endpoints cover orders, shipments, carriers, and warehouses. Poll for new orders or use webhooks if available for your plan. Batch operations are supported for bulk label creation. ## Twilio SMS Integration Twilio's REST API requires Account SID and Auth Token. The Messaging API endpoint is /2010-04-01/Accounts/{AccountSid}/Messages.json. For two-way messaging, configure a webhook URL to receive incoming messages. Consider using a queue for high-volume outbound SMS to avoid rate limits. # PentaCodes Technical Reference and Integration Documentation # Version 1.0 | Last Updated March 2025 # This document contains technical reference material for common integrations and deployment procedures. ## QuickBooks Online Integration The QuickBooks Online API uses OAuth 2.0 for authentication. You will need to register your application in the Intuit Developer Portal to obtain client credentials. The base URL for the API is https://quickbooks.api.intuit.com/v3/company/{realmId}. Common endpoints include /invoice, /customer, /payment, and /bill. Rate limits apply: 500 requests per minute for production apps. Always implement exponential backoff for 429 responses. ## Stripe Payment Integration Stripe provides both client-side (Stripe.js) and server-side APIs. For PCI compliance, never pass raw card numbers through your server—use Stripe Elements or the Payment Intents API. Webhooks are essential for handling asynchronous events like payment succeeded or subscription renewed. Configure your webhook endpoint to verify signatures using the Stripe-Signature header. ## ShipStation Integration The ShipStation API is REST-based. Authentication uses API key and API secret in the Authorization header. Endpoints cover orders, shipments, carriers, and warehouses. Poll for new orders or use webhooks if available for your plan. Batch operations are supported for bulk label creation. ## Twilio SMS Integration Twilio's REST API requires Account SID and Auth Token. The Messaging API endpoint is /2010-04-01/Accounts/{AccountSid}/Messages.json. For two-way messaging, configure a webhook URL to receive incoming messages. Consider using a queue for high-volume outbound SMS to avoid rate limits. # PentaCodes Technical Reference and Integration Documentation # Version 1.0 | Last Updated March 2025 # This document contains technical reference material for common integrations and deployment procedures. ## QuickBooks Online Integration The QuickBooks Online API uses OAuth 2.0 for authentication. You will need to register your application in the Intuit Developer Portal to obtain client credentials. The base URL for the API is https://quickbooks.api.intuit.com/v3/company/{realmId}. Common endpoints include /invoice, /customer, /payment, and /bill. Rate limits apply: 500 requests per minute for production apps. Always implement exponential backoff for 429 responses. ## Stripe Payment Integration Stripe provides both client-side (Stripe.js) and server-side APIs. For PCI compliance, never pass raw card numbers through your server—use Stripe Elements or the Payment Intents API. Webhooks are essential for handling asynchronous events like payment succeeded or subscription renewed. Configure your webhook endpoint to verify signatures using the Stripe-Signature header. ## ShipStation Integration The ShipStation API is REST-based. Authentication uses API key and API secret in the Authorization header. Endpoints cover orders, shipments, carriers, and warehouses. Poll for new orders or use webhooks if available for your plan. Batch operations are supported for bulk label creation. ## Twilio SMS Integration Twilio's REST API requires Account SID and Auth Token. The Messaging API endpoint is /2010-04-01/Accounts/{AccountSid}/Messages.json. For two-way messaging, configure a webhook URL to receive incoming messages. Consider using a queue for high-volume outbound SMS to avoid rate limits. # PentaCodes Technical Reference and Integration Documentation # Version 1.0 | Last Updated March 2025 # This document contains technical reference material for common integrations and deployment procedures. ## QuickBooks Online Integration The QuickBooks Online API uses OAuth 2.0 for authentication. You will need to register your application in the Intuit Developer Portal to obtain client credentials. The base URL for the API is https://quickbooks.api.intuit.com/v3/company/{realmId}. Common endpoints include /invoice, /customer, /payment, and /bill. Rate limits apply: 500 requests per minute for production apps. Always implement exponential backoff for 429 responses. ## Stripe Payment Integration Stripe provides both client-side (Stripe.js) and server-side APIs. For PCI compliance, never pass raw card numbers through your server—use Stripe Elements or the Payment Intents API. Webhooks are essential for handling asynchronous events like payment succeeded or subscription renewed. Configure your webhook endpoint to verify signatures using the Stripe-Signature header. ## ShipStation Integration The ShipStation API is REST-based. Authentication uses API key and API secret in the Authorization header. Endpoints cover orders, shipments, carriers, and warehouses. Poll for new orders or use webhooks if available for your plan. Batch operations are supported for bulk label creation. ## Twilio SMS Integration Twilio's REST API requires Account SID and Auth Token. The Messaging API endpoint is /2010-04-01/Accounts/{AccountSid}/Messages.json. For two-way messaging, configure a webhook URL to receive incoming messages. Consider using a queue for high-volume outbound SMS to avoid rate limits. # PentaCodes Technical Reference and Integration Documentation # Version 1.0 | Last Updated March 2025 # This document contains technical reference material for common integrations and deployment procedures. ## QuickBooks Online Integration The QuickBooks Online API uses OAuth 2.0 for authentication. You will need to register your application in the Intuit Developer Portal to obtain client credentials. The base URL for the API is https://quickbooks.api.intuit.com/v3/company/{realmId}. Common endpoints include /invoice, /customer, /payment, and /bill. Rate limits apply: 500 requests per minute for production apps. Always implement exponential backoff for 429 responses. ## Stripe Payment Integration Stripe provides both client-side (Stripe.js) and server-side APIs. For PCI compliance, never pass raw card numbers through your server—use Stripe Elements or the Payment Intents API. Webhooks are essential for handling asynchronous events like payment succeeded or subscription renewed. Configure your webhook endpoint to verify signatures using the Stripe-Signature header. ## ShipStation Integration The ShipStation API is REST-based. Authentication uses API key and API secret in the Authorization header. Endpoints cover orders, shipments, carriers, and warehouses. Poll for new orders or use webhooks if available for your plan. Batch operations are supported for bulk label creation. ## Twilio SMS Integration Twilio's REST API requires Account SID and Auth Token. The Messaging API endpoint is /2010-04-01/Accounts/{AccountSid}/Messages.json. For two-way messaging, configure a webhook URL to receive incoming messages. Consider using a queue for high-volume outbound SMS to avoid rate limits. # PentaCodes Technical Reference and Integration Documentation # Version 1.0 | Last Updated March 2025 # This document contains technical reference material for common integrations and deployment procedures. ## QuickBooks Online Integration The QuickBooks Online API uses OAuth 2.0 for authentication. You will need to register your application in the Intuit Developer Portal to obtain client credentials. The base URL for the API is https://quickbooks.api.intuit.com/v3/company/{realmId}. Common endpoints include /invoice, /customer, /payment, and /bill. Rate limits apply: 500 requests per minute for production apps. Always implement exponential backoff for 429 responses. ## Stripe Payment Integration Stripe provides both client-side (Stripe.js) and server-side APIs. For PCI compliance, never pass raw card numbers through your server—use Stripe Elements or the Payment Intents API. Webhooks are essential for handling asynchronous events like payment succeeded or subscription renewed. Configure your webhook endpoint to verify signatures using the Stripe-Signature header. ## ShipStation Integration The ShipStation API is REST-based. Authentication uses API key and API secret in the Authorization header. Endpoints cover orders, shipments, carriers, and warehouses. Poll for new orders or use webhooks if available for your plan. Batch operations are supported for bulk label creation. ## Twilio SMS Integration Twilio's REST API requires Account SID and Auth Token. The Messaging API endpoint is /2010-04-01/Accounts/{AccountSid}/Messages.json. For two-way messaging, configure a webhook URL to receive incoming messages. Consider using a queue for high-volume outbound SMS to avoid rate limits. # PentaCodes Technical Reference and Integration Documentation # Version 1.0 | Last Updated March 2025 # This document contains technical reference material for common integrations and deployment procedures. ## QuickBooks Online Integration The QuickBooks Online API uses OAuth 2.0 for authentication. You will need to register your application in the Intuit Developer Portal to obtain client credentials. The base URL for the API is https://quickbooks.api.intuit.com/v3/company/{realmId}. Common endpoints include /invoice, /customer, /payment, and /bill. Rate limits apply: 500 requests per minute for production apps. Always implement exponential backoff for 429 responses. ## Stripe Payment Integration Stripe provides both client-side (Stripe.js) and server-side APIs. For PCI compliance, never pass raw card numbers through your server—use Stripe Elements or the Payment Intents API. Webhooks are essential for handling asynchronous events like payment succeeded or subscription renewed. Configure your webhook endpoint to verify signatures using the Stripe-Signature header. ## ShipStation Integration The ShipStation API is REST-based. Authentication uses API key and API secret in the Authorization header. Endpoints cover orders, shipments, carriers, and warehouses. Poll for new orders or use webhooks if available for your plan. Batch operations are supported for bulk label creation. ## Twilio SMS Integration Twilio's REST API requires Account SID and Auth Token. The Messaging API endpoint is /2010-04-01/Accounts/{AccountSid}/Messages.json. For two-way messaging, configure a webhook URL to receive incoming messages. Consider using a queue for high-volume outbound SMS to avoid rate limits. # PentaCodes Technical Reference and Integration Documentation # Version 1.0 | Last Updated March 2025 # This document contains technical reference material for common integrations and deployment procedures. ## QuickBooks Online Integration The QuickBooks Online API uses OAuth 2.0 for authentication. You will need to register your application in the Intuit Developer Portal to obtain client credentials. The base URL for the API is https://quickbooks.api.intuit.com/v3/company/{realmId}. Common endpoints include /invoice, /customer, /payment, and /bill. Rate limits apply: 500 requests per minute for production apps. Always implement exponential backoff for 429 responses. ## Stripe Payment Integration Stripe provides both client-side (Stripe.js) and server-side APIs. For PCI compliance, never pass raw card numbers through your server—use Stripe Elements or the Payment Intents API. Webhooks are essential for handling asynchronous events like payment succeeded or subscription renewed. Configure your webhook endpoint to verify signatures using the Stripe-Signature header. ## ShipStation Integration The ShipStation API is REST-based. Authentication uses API key and API secret in the Authorization header. Endpoints cover orders, shipments, carriers, and warehouses. Poll for new orders or use webhooks if available for your plan. Batch operations are supported for bulk label creation. ## Twilio SMS Integration Twilio's REST API requires Account SID and Auth Token. The Messaging API endpoint is /2010-04-01/Accounts/{AccountSid}/Messages.json. For two-way messaging, configure a webhook URL to receive incoming messages. Consider using a queue for high-volume outbound SMS to avoid rate limits. # PentaCodes Technical Reference and Integration Documentation # Version 1.0 | Last Updated March 2025 # This document contains technical reference material for common integrations and deployment procedures. ## QuickBooks Online Integration The QuickBooks Online API uses OAuth 2.0 for authentication. You will need to register your application in the Intuit Developer Portal to obtain client credentials. The base URL for the API is https://quickbooks.api.intuit.com/v3/company/{realmId}. Common endpoints include /invoice, /customer, /payment, and /bill. Rate limits apply: 500 requests per minute for production apps. Always implement exponential backoff for 429 responses. ## Stripe Payment Integration Stripe provides both client-side (Stripe.js) and server-side APIs. For PCI compliance, never pass raw card numbers through your server—use Stripe Elements or the Payment Intents API. Webhooks are essential for handling asynchronous events like payment succeeded or subscription renewed. Configure your webhook endpoint to verify signatures using the Stripe-Signature header. ## ShipStation Integration The ShipStation API is REST-based. Authentication uses API key and API secret in the Authorization header. Endpoints cover orders, shipments, carriers, and warehouses. Poll for new orders or use webhooks if available for your plan. Batch operations are supported for bulk label creation. ## Twilio SMS Integration Twilio's REST API requires Account SID and Auth Token. The Messaging API endpoint is /2010-04-01/Accounts/{AccountSid}/Messages.json. For two-way messaging, configure a webhook URL to receive incoming messages. Consider using a queue for high-volume outbound SMS to avoid rate limits. # PentaCodes Technical Reference and Integration Documentation # Version 1.0 | Last Updated March 2025 # This document contains technical reference material for common integrations and deployment procedures. ## QuickBooks Online Integration The QuickBooks Online API uses OAuth 2.0 for authentication. You will need to register your application in the Intuit Developer Portal to obtain client credentials. The base URL for the API is https://quickbooks.api.intuit.com/v3/company/{realmId}. Common endpoints include /invoice, /customer, /payment, and /bill. Rate limits apply: 500 requests per minute for production apps. Always implement exponential backoff for 429 responses. ## Stripe Payment Integration Stripe provides both client-side (Stripe.js) and server-side APIs. For PCI compliance, never pass raw card numbers through your server—use Stripe Elements or the Payment Intents API. Webhooks are essential for handling asynchronous events like payment succeeded or subscription renewed. Configure your webhook endpoint to verify signatures using the Stripe-Signature header. ## ShipStation Integration The ShipStation API is REST-based. Authentication uses API key and API secret in the Authorization header. Endpoints cover orders, shipments, carriers, and warehouses. Poll for new orders or use webhooks if available for your plan. Batch operations are supported for bulk label creation. ## Twilio SMS Integration Twilio's REST API requires Account SID and Auth Token. The Messaging API endpoint is /2010-04-01/Accounts/{AccountSid}/Messages.json. For two-way messaging, configure a webhook URL to receive incoming messages. Consider using a queue for high-volume outbound SMS to avoid rate limits. # PentaCodes Technical Reference and Integration Documentation # Version 1.0 | Last Updated March 2025 # This document contains technical reference material for common integrations and deployment procedures. ## QuickBooks Online Integration The QuickBooks Online API uses OAuth 2.0 for authentication. You will need to register your application in the Intuit Developer Portal to obtain client credentials. The base URL for the API is https://quickbooks.api.intuit.com/v3/company/{realmId}. Common endpoints include /invoice, /customer, /payment, and /bill. Rate limits apply: 500 requests per minute for production apps. Always implement exponential backoff for 429 responses. ## Stripe Payment Integration Stripe provides both client-side (Stripe.js) and server-side APIs. For PCI compliance, never pass raw card numbers through your server—use Stripe Elements or the Payment Intents API. Webhooks are essential for handling asynchronous events like payment succeeded or subscription renewed. Configure your webhook endpoint to verify signatures using the Stripe-Signature header. ## ShipStation Integration The ShipStation API is REST-based. Authentication uses API key and API secret in the Authorization header. Endpoints cover orders, shipments, carriers, and warehouses. Poll for new orders or use webhooks if available for your plan. Batch operations are supported for bulk label creation. ## Twilio SMS Integration Twilio's REST API requires Account SID and Auth Token. The Messaging API endpoint is /2010-04-01/Accounts/{AccountSid}/Messages.json. For two-way messaging, configure a webhook URL to receive incoming messages. Consider using a queue for high-volume outbound SMS to avoid rate limits. # PentaCodes Technical Reference and Integration Documentation # Version 1.0 | Last Updated March 2025 # This document contains technical reference material for common integrations and deployment procedures. ## QuickBooks Online Integration The QuickBooks Online API uses OAuth 2.0 for authentication. You will need to register your application in the Intuit Developer Portal to obtain client credentials. The base URL for the API is https://quickbooks.api.intuit.com/v3/company/{realmId}. Common endpoints include /invoice, /customer, /payment, and /bill. Rate limits apply: 500 requests per minute for production apps. Always implement exponential backoff for 429 responses. ## Stripe Payment Integration Stripe provides both client-side (Stripe.js) and server-side APIs. For PCI compliance, never pass raw card numbers through your server—use Stripe Elements or the Payment Intents API. Webhooks are essential for handling asynchronous events like payment succeeded or subscription renewed. Configure your webhook endpoint to verify signatures using the Stripe-Signature header. ## ShipStation Integration The ShipStation API is REST-based. Authentication uses API key and API secret in the Authorization header. Endpoints cover orders, shipments, carriers, and warehouses. Poll for new orders or use webhooks if available for your plan. Batch operations are supported for bulk label creation. ## Twilio SMS Integration Twilio's REST API requires Account SID and Auth Token. The Messaging API endpoint is /2010-04-01/Accounts/{AccountSid}/Messages.json. For two-way messaging, configure a webhook URL to receive incoming messages. Consider using a queue for high-volume outbound SMS to avoid rate limits. # PentaCodes Technical Reference and Integration Documentation # Version 1.0 | Last Updated March 2025 # This document contains technical reference material for common integrations and deployment procedures. ## QuickBooks Online Integration The QuickBooks Online API uses OAuth 2.0 for authentication. You will need to register your application in the Intuit Developer Portal to obtain client credentials. The base URL for the API is https://quickbooks.api.intuit.com/v3/company/{realmId}. Common endpoints include /invoice, /customer, /payment, and /bill. Rate limits apply: 500 requests per minute for production apps. Always implement exponential backoff for 429 responses. ## Stripe Payment Integration Stripe provides both client-side (Stripe.js) and server-side APIs. For PCI compliance, never pass raw card numbers through your server—use Stripe Elements or the Payment Intents API. Webhooks are essential for handling asynchronous events like payment succeeded or subscription renewed. Configure your webhook endpoint to verify signatures using the Stripe-Signature header. ## ShipStation Integration The ShipStation API is REST-based. Authentication uses API key and API secret in the Authorization header. Endpoints cover orders, shipments, carriers, and warehouses. Poll for new orders or use webhooks if available for your plan. Batch operations are supported for bulk label creation. ## Twilio SMS Integration Twilio's REST API requires Account SID and Auth Token. The Messaging API endpoint is /2010-04-01/Accounts/{AccountSid}/Messages.json. For two-way messaging, configure a webhook URL to receive incoming messages. Consider using a queue for high-volume outbound SMS to avoid rate limits. # PentaCodes Technical Reference and Integration Documentation # Version 1.0 | Last Updated March 2025 # This document contains technical reference material for common integrations and deployment procedures. ## QuickBooks Online Integration The QuickBooks Online API uses OAuth 2.0 for authentication. You will need to register your application in the Intuit Developer Portal to obtain client credentials. The base URL for the API is https://quickbooks.api.intuit.com/v3/company/{realmId}. Common endpoints include /invoice, /customer, /payment, and /bill. Rate limits apply: 500 requests per minute for production apps. Always implement exponential backoff for 429 responses. ## Stripe Payment Integration Stripe provides both client-side (Stripe.js) and server-side APIs. For PCI compliance, never pass raw card numbers through your server—use Stripe Elements or the Payment Intents API. Webhooks are essential for handling asynchronous events like payment succeeded or subscription renewed. Configure your webhook endpoint to verify signatures using the Stripe-Signature header. ## ShipStation Integration The ShipStation API is REST-based. Authentication uses API key and API secret in the Authorization header. Endpoints cover orders, shipments, carriers, and warehouses. Poll for new orders or use webhooks if available for your plan. Batch operations are supported for bulk label creation. ## Twilio SMS Integration Twilio's REST API requires Account SID and Auth Token. The Messaging API endpoint is /2010-04-01/Accounts/{AccountSid}/Messages.json. For two-way messaging, configure a webhook URL to receive incoming messages. Consider using a queue for high-volume outbound SMS to avoid rate limits. # PentaCodes Technical Reference and Integration Documentation # Version 1.0 | Last Updated March 2025 # This document contains technical reference material for common integrations and deployment procedures. ## QuickBooks Online Integration The QuickBooks Online API uses OAuth 2.0 for authentication. You will need to register your application in the Intuit Developer Portal to obtain client credentials. The base URL for the API is https://quickbooks.api.intuit.com/v3/company/{realmId}. Common endpoints include /invoice, /customer, /payment, and /bill. Rate limits apply: 500 requests per minute for production apps. Always implement exponential backoff for 429 responses. ## Stripe Payment Integration Stripe provides both client-side (Stripe.js) and server-side APIs. For PCI compliance, never pass raw card numbers through your server—use Stripe Elements or the Payment Intents API. Webhooks are essential for handling asynchronous events like payment succeeded or subscription renewed. Configure your webhook endpoint to verify signatures using the Stripe-Signature header. ## ShipStation Integration The ShipStation API is REST-based. Authentication uses API key and API secret in the Authorization header. Endpoints cover orders, shipments, carriers, and warehouses. Poll for new orders or use webhooks if available for your plan. Batch operations are supported for bulk label creation. ## Twilio SMS Integration Twilio's REST API requires Account SID and Auth Token. The Messaging API endpoint is /2010-04-01/Accounts/{AccountSid}/Messages.json. For two-way messaging, configure a webhook URL to receive incoming messages. Consider using a queue for high-volume outbound SMS to avoid rate limits. # PentaCodes Technical Reference and Integration Documentation # Version 1.0 | Last Updated March 2025 # This document contains technical reference material for common integrations and deployment procedures. ## QuickBooks Online Integration The QuickBooks Online API uses OAuth 2.0 for authentication. You will need to register your application in the Intuit Developer Portal to obtain client credentials. The base URL for the API is https://quickbooks.api.intuit.com/v3/company/{realmId}. Common endpoints include /invoice, /customer, /payment, and /bill. Rate limits apply: 500 requests per minute for production apps. Always implement exponential backoff for 429 responses. ## Stripe Payment Integration Stripe provides both client-side (Stripe.js) and server-side APIs. For PCI compliance, never pass raw card numbers through your server—use Stripe Elements or the Payment Intents API. Webhooks are essential for handling asynchronous events like payment succeeded or subscription renewed. Configure your webhook endpoint to verify signatures using the Stripe-Signature header. ## ShipStation Integration The ShipStation API is REST-based. Authentication uses API key and API secret in the Authorization header. Endpoints cover orders, shipments, carriers, and warehouses. Poll for new orders or use webhooks if available for your plan. Batch operations are supported for bulk label creation. ## Twilio SMS Integration Twilio's REST API requires Account SID and Auth Token. The Messaging API endpoint is /2010-04-01/Accounts/{AccountSid}/Messages.json. For two-way messaging, configure a webhook URL to receive incoming messages. Consider using a queue for high-volume outbound SMS to avoid rate limits. # PentaCodes Technical Reference and Integration Documentation # Version 1.0 | Last Updated March 2025 # This document contains technical reference material for common integrations and deployment procedures. ## QuickBooks Online Integration The QuickBooks Online API uses OAuth 2.0 for authentication. You will need to register your application in the Intuit Developer Portal to obtain client credentials. The base URL for the API is https://quickbooks.api.intuit.com/v3/company/{realmId}. Common endpoints include /invoice, /customer, /payment, and /bill. Rate limits apply: 500 requests per minute for production apps. Always implement exponential backoff for 429 responses. ## Stripe Payment Integration Stripe provides both client-side (Stripe.js) and server-side APIs. For PCI compliance, never pass raw card numbers through your server—use Stripe Elements or the Payment Intents API. Webhooks are essential for handling asynchronous events like payment succeeded or subscription renewed. Configure your webhook endpoint to verify signatures using the Stripe-Signature header. ## ShipStation Integration The ShipStation API is REST-based. Authentication uses API key and API secret in the Authorization header. Endpoints cover orders, shipments, carriers, and warehouses. Poll for new orders or use webhooks if available for your plan. Batch operations are supported for bulk label creation. ## Twilio SMS Integration Twilio's REST API requires Account SID and Auth Token. The Messaging API endpoint is /2010-04-01/Accounts/{AccountSid}/Messages.json. For two-way messaging, configure a webhook URL to receive incoming messages. Consider using a queue for high-volume outbound SMS to avoid rate limits. # PentaCodes Technical Reference and Integration Documentation # Version 1.0 | Last Updated March 2025 # This document contains technical reference material for common integrations and deployment procedures. ## QuickBooks Online Integration The QuickBooks Online API uses OAuth 2.0 for authentication. You will need to register your application in the Intuit Developer Portal to obtain client credentials. The base URL for the API is https://quickbooks.api.intuit.com/v3/company/{realmId}. Common endpoints include /invoice, /customer, /payment, and /bill. Rate limits apply: 500 requests per minute for production apps. Always implement exponential backoff for 429 responses. ## Stripe Payment Integration Stripe provides both client-side (Stripe.js) and server-side APIs. For PCI compliance, never pass raw card numbers through your server—use Stripe Elements or the Payment Intents API. Webhooks are essential for handling asynchronous events like payment succeeded or subscription renewed. Configure your webhook endpoint to verify signatures using the Stripe-Signature header. ## ShipStation Integration The ShipStation API is REST-based. Authentication uses API key and API secret in the Authorization header. Endpoints cover orders, shipments, carriers, and warehouses. Poll for new orders or use webhooks if available for your plan. Batch operations are supported for bulk label creation. ## Twilio SMS Integration Twilio's REST API requires Account SID and Auth Token. The Messaging API endpoint is /2010-04-01/Accounts/{AccountSid}/Messages.json. For two-way messaging, configure a webhook URL to receive incoming messages. Consider using a queue for high-volume outbound SMS to avoid rate limits. # PentaCodes Technical Reference and Integration Documentation # Version 1.0 | Last Updated March 2025 # This document contains technical reference material for common integrations and deployment procedures. ## QuickBooks Online Integration The QuickBooks Online API uses OAuth 2.0 for authentication. You will need to register your application in the Intuit Developer Portal to obtain client credentials. The base URL for the API is https://quickbooks.api.intuit.com/v3/company/{realmId}. Common endpoints include /invoice, /customer, /payment, and /bill. Rate limits apply: 500 requests per minute for production apps. Always implement exponential backoff for 429 responses. ## Stripe Payment Integration Stripe provides both client-side (Stripe.js) and server-side APIs. For PCI compliance, never pass raw card numbers through your server—use Stripe Elements or the Payment Intents API. Webhooks are essential for handling asynchronous events like payment succeeded or subscription renewed. Configure your webhook endpoint to verify signatures using the Stripe-Signature header. ## ShipStation Integration The ShipStation API is REST-based. Authentication uses API key and API secret in the Authorization header. Endpoints cover orders, shipments, carriers, and warehouses. Poll for new orders or use webhooks if available for your plan. Batch operations are supported for bulk label creation. ## Twilio SMS Integration Twilio's REST API requires Account SID and Auth Token. The Messaging API endpoint is /2010-04-01/Accounts/{AccountSid}/Messages.json. For two-way messaging, configure a webhook URL to receive incoming messages. Consider using a queue for high-volume outbound SMS to avoid rate limits. # PentaCodes Technical Reference and Integration Documentation # Version 1.0 | Last Updated March 2025 # This document contains technical reference material for common integrations and deployment procedures. ## QuickBooks Online Integration The QuickBooks Online API uses OAuth 2.0 for authentication. You will need to register your application in the Intuit Developer Portal to obtain client credentials. The base URL for the API is https://quickbooks.api.intuit.com/v3/company/{realmId}. Common endpoints include /invoice, /customer, /payment, and /bill. Rate limits apply: 500 requests per minute for production apps. Always implement exponential backoff for 429 responses. ## Stripe Payment Integration Stripe provides both client-side (Stripe.js) and server-side APIs. For PCI compliance, never pass raw card numbers through your server—use Stripe Elements or the Payment Intents API. Webhooks are essential for handling asynchronous events like payment succeeded or subscription renewed. Configure your webhook endpoint to verify signatures using the Stripe-Signature header. ## ShipStation Integration The ShipStation API is REST-based. Authentication uses API key and API secret in the Authorization header. Endpoints cover orders, shipments, carriers, and warehouses. Poll for new orders or use webhooks if available for your plan. Batch operations are supported for bulk label creation. ## Twilio SMS Integration Twilio's REST API requires Account SID and Auth Token. The Messaging API endpoint is /2010-04-01/Accounts/{AccountSid}/Messages.json. For two-way messaging, configure a webhook URL to receive incoming messages. Consider using a queue for high-volume outbound SMS to avoid rate limits. # PentaCodes Technical Reference and Integration Documentation # Version 1.0 | Last Updated March 2025 # This document contains technical reference material for common integrations and deployment procedures. ## QuickBooks Online Integration The QuickBooks Online API uses OAuth 2.0 for authentication. You will need to register your application in the Intuit Developer Portal to obtain client credentials. The base URL for the API is https://quickbooks.api.intuit.com/v3/company/{realmId}. Common endpoints include /invoice, /customer, /payment, and /bill. Rate limits apply: 500 requests per minute for production apps. Always implement exponential backoff for 429 responses. ## Stripe Payment Integration Stripe provides both client-side (Stripe.js) and server-side APIs. For PCI compliance, never pass raw card numbers through your server—use Stripe Elements or the Payment Intents API. Webhooks are essential for handling asynchronous events like payment succeeded or subscription renewed. Configure your webhook endpoint to verify signatures using the Stripe-Signature header. ## ShipStation Integration The ShipStation API is REST-based. Authentication uses API key and API secret in the Authorization header. Endpoints cover orders, shipments, carriers, and warehouses. Poll for new orders or use webhooks if available for your plan. Batch operations are supported for bulk label creation. ## Twilio SMS Integration Twilio's REST API requires Account SID and Auth Token. The Messaging API endpoint is /2010-04-01/Accounts/{AccountSid}/Messages.json. For two-way messaging, configure a webhook URL to receive incoming messages. Consider using a queue for high-volume outbound SMS to avoid rate limits. # PentaCodes Technical Reference and Integration Documentation # Version 1.0 | Last Updated March 2025 # This document contains technical reference material for common integrations and deployment procedures. ## QuickBooks Online Integration The QuickBooks Online API uses OAuth 2.0 for authentication. You will need to register your application in the Intuit Developer Portal to obtain client credentials. The base URL for the API is https://quickbooks.api.intuit.com/v3/company/{realmId}. Common endpoints include /invoice, /customer, /payment, and /bill. Rate limits apply: 500 requests per minute for production apps. Always implement exponential backoff for 429 responses. ## Stripe Payment Integration Stripe provides both client-side (Stripe.js) and server-side APIs. For PCI compliance, never pass raw card numbers through your server—use Stripe Elements or the Payment Intents API. Webhooks are essential for handling asynchronous events like payment succeeded or subscription renewed. Configure your webhook endpoint to verify signatures using the Stripe-Signature header. ## ShipStation Integration The ShipStation API is REST-based. Authentication uses API key and API secret in the Authorization header. Endpoints cover orders, shipments, carriers, and warehouses. Poll for new orders or use webhooks if available for your plan. Batch operations are supported for bulk label creation. ## Twilio SMS Integration Twilio's REST API requires Account SID and Auth Token. The Messaging API endpoint is /2010-04-01/Accounts/{AccountSid}/Messages.json. For two-way messaging, configure a webhook URL to receive incoming messages. Consider using a queue for high-volume outbound SMS to avoid rate limits. # PentaCodes Technical Reference and Integration Documentation # Version 1.0 | Last Updated March 2025 # This document contains technical reference material for common integrations and deployment procedures. ## QuickBooks Online Integration The QuickBooks Online API uses OAuth 2.0 for authentication. You will need to register your application in the Intuit Developer Portal to obtain client credentials. The base URL for the API is https://quickbooks.api.intuit.com/v3/company/{realmId}. Common endpoints include /invoice, /customer, /payment, and /bill. Rate limits apply: 500 requests per minute for production apps. Always implement exponential backoff for 429 responses. ## Stripe Payment Integration Stripe provides both client-side (Stripe.js) and server-side APIs. For PCI compliance, never pass raw card numbers through your server—use Stripe Elements or the Payment Intents API. Webhooks are essential for handling asynchronous events like payment succeeded or subscription renewed. Configure your webhook endpoint to verify signatures using the Stripe-Signature header. ## ShipStation Integration The ShipStation API is REST-based. Authentication uses API key and API secret in the Authorization header. Endpoints cover orders, shipments, carriers, and warehouses. Poll for new orders or use webhooks if available for your plan. Batch operations are supported for bulk label creation. ## Twilio SMS Integration Twilio's REST API requires Account SID and Auth Token. The Messaging API endpoint is /2010-04-01/Accounts/{AccountSid}/Messages.json. For two-way messaging, configure a webhook URL to receive incoming messages. Consider using a queue for high-volume outbound SMS to avoid rate limits. # PentaCodes Technical Reference and Integration Documentation # Version 1.0 | Last Updated March 2025 # This document contains technical reference material for common integrations and deployment procedures. ## QuickBooks Online Integration The QuickBooks Online API uses OAuth 2.0 for authentication. You will need to register your application in the Intuit Developer Portal to obtain client credentials. The base URL for the API is https://quickbooks.api.intuit.com/v3/company/{realmId}. Common endpoints include /invoice, /customer, /payment, and /bill. Rate limits apply: 500 requests per minute for production apps. Always implement exponential backoff for 429 responses. ## Stripe Payment Integration Stripe provides both client-side (Stripe.js) and server-side APIs. For PCI compliance, never pass raw card numbers through your server—use Stripe Elements or the Payment Intents API. Webhooks are essential for handling asynchronous events like payment succeeded or subscription renewed. Configure your webhook endpoint to verify signatures using the Stripe-Signature header. ## ShipStation Integration The ShipStation API is REST-based. Authentication uses API key and API secret in the Authorization header. Endpoints cover orders, shipments, carriers, and warehouses. Poll for new orders or use webhooks if available for your plan. Batch operations are supported for bulk label creation. ## Twilio SMS Integration Twilio's REST API requires Account SID and Auth Token. The Messaging API endpoint is /2010-04-01/Accounts/{AccountSid}/Messages.json. For two-way messaging, configure a webhook URL to receive incoming messages. Consider using a queue for high-volume outbound SMS to avoid rate limits. # PentaCodes Technical Reference and Integration Documentation # Version 1.0 | Last Updated March 2025 # This document contains technical reference material for common integrations and deployment procedures. ## QuickBooks Online Integration The QuickBooks Online API uses OAuth 2.0 for authentication. You will need to register your application in the Intuit Developer Portal to obtain client credentials. The base URL for the API is https://quickbooks.api.intuit.com/v3/company/{realmId}. Common endpoints include /invoice, /customer, /payment, and /bill. Rate limits apply: 500 requests per minute for production apps. Always implement exponential backoff for 429 responses. ## Stripe Payment Integration Stripe provides both client-side (Stripe.js) and server-side APIs. For PCI compliance, never pass raw card numbers through your server—use Stripe Elements or the Payment Intents API. Webhooks are essential for handling asynchronous events like payment succeeded or subscription renewed. Configure your webhook endpoint to verify signatures using the Stripe-Signature header. ## ShipStation Integration The ShipStation API is REST-based. Authentication uses API key and API secret in the Authorization header. Endpoints cover orders, shipments, carriers, and warehouses. Poll for new orders or use webhooks if available for your plan. Batch operations are supported for bulk label creation. ## Twilio SMS Integration Twilio's REST API requires Account SID and Auth Token. The Messaging API endpoint is /2010-04-01/Accounts/{AccountSid}/Messages.json. For two-way messaging, configure a webhook URL to receive incoming messages. Consider using a queue for high-volume outbound SMS to avoid rate limits. # PentaCodes Technical Reference and Integration Documentation # Version 1.0 | Last Updated March 2025 # This document contains technical reference material for common integrations and deployment procedures. ## QuickBooks Online Integration The QuickBooks Online API uses OAuth 2.0 for authentication. You will need to register your application in the Intuit Developer Portal to obtain client credentials. The base URL for the API is https://quickbooks.api.intuit.com/v3/company/{realmId}. Common endpoints include /invoice, /customer, /payment, and /bill. Rate limits apply: 500 requests per minute for production apps. Always implement exponential backoff for 429 responses. ## Stripe Payment Integration Stripe provides both client-side (Stripe.js) and server-side APIs. For PCI compliance, never pass raw card numbers through your server—use Stripe Elements or the Payment Intents API. Webhooks are essential for handling asynchronous events like payment succeeded or subscription renewed. Configure your webhook endpoint to verify signatures using the Stripe-Signature header. ## ShipStation Integration The ShipStation API is REST-based. Authentication uses API key and API secret in the Authorization header. Endpoints cover orders, shipments, carriers, and warehouses. Poll for new orders or use webhooks if available for your plan. Batch operations are supported for bulk label creation. ## Twilio SMS Integration Twilio's REST API requires Account SID and Auth Token. The Messaging API endpoint is /2010-04-01/Accounts/{AccountSid}/Messages.json. For two-way messaging, configure a webhook URL to receive incoming messages. Consider using a queue for high-volume outbound SMS to avoid rate limits. # PentaCodes Technical Reference and Integration Documentation # Version 1.0 | Last Updated March 2025 # This document contains technical reference material for common integrations and deployment procedures. ## QuickBooks Online Integration The QuickBooks Online API uses OAuth 2.0 for authentication. You will need to register your application in the Intuit Developer Portal to obtain client credentials. The base URL for the API is https://quickbooks.api.intuit.com/v3/company/{realmId}. Common endpoints include /invoice, /customer, /payment, and /bill. Rate limits apply: 500 requests per minute for production apps. Always implement exponential backoff for 429 responses. ## Stripe Payment Integration Stripe provides both client-side (Stripe.js) and server-side APIs. For PCI compliance, never pass raw card numbers through your server—use Stripe Elements or the Payment Intents API. Webhooks are essential for handling asynchronous events like payment succeeded or subscription renewed. Configure your webhook endpoint to verify signatures using the Stripe-Signature header. ## ShipStation Integration The ShipStation API is REST-based. Authentication uses API key and API secret in the Authorization header. Endpoints cover orders, shipments, carriers, and warehouses. Poll for new orders or use webhooks if available for your plan. Batch operations are supported for bulk label creation. ## Twilio SMS Integration Twilio's REST API requires Account SID and Auth Token. The Messaging API endpoint is /2010-04-01/Accounts/{AccountSid}/Messages.json. For two-way messaging, configure a webhook URL to receive incoming messages. Consider using a queue for high-volume outbound SMS to avoid rate limits. # PentaCodes Technical Reference and Integration Documentation # Version 1.0 | Last Updated March 2025 # This document contains technical reference material for common integrations and deployment procedures. ## QuickBooks Online Integration The QuickBooks Online API uses OAuth 2.0 for authentication. You will need to register your application in the Intuit Developer Portal to obtain client credentials. The base URL for the API is https://quickbooks.api.intuit.com/v3/company/{realmId}. Common endpoints include /invoice, /customer, /payment, and /bill. Rate limits apply: 500 requests per minute for production apps. Always implement exponential backoff for 429 responses. ## Stripe Payment Integration Stripe provides both client-side (Stripe.js) and server-side APIs. For PCI compliance, never pass raw card numbers through your server—use Stripe Elements or the Payment Intents API. Webhooks are essential for handling asynchronous events like payment succeeded or subscription renewed. Configure your webhook endpoint to verify signatures using the Stripe-Signature header. ## ShipStation Integration The ShipStation API is REST-based. Authentication uses API key and API secret in the Authorization header. Endpoints cover orders, shipments, carriers, and warehouses. Poll for new orders or use webhooks if available for your plan. Batch operations are supported for bulk label creation. ## Twilio SMS Integration Twilio's REST API requires Account SID and Auth Token. The Messaging API endpoint is /2010-04-01/Accounts/{AccountSid}/Messages.json. For two-way messaging, configure a webhook URL to receive incoming messages. Consider using a queue for high-volume outbound SMS to avoid rate limits. # PentaCodes Technical Reference and Integration Documentation # Version 1.0 | Last Updated March 2025 # This document contains technical reference material for common integrations and deployment procedures. ## QuickBooks Online Integration The QuickBooks Online API uses OAuth 2.0 for authentication. You will need to register your application in the Intuit Developer Portal to obtain client credentials. The base URL for the API is https://quickbooks.api.intuit.com/v3/company/{realmId}. Common endpoints include /invoice, /customer, /payment, and /bill. Rate limits apply: 500 requests per minute for production apps. Always implement exponential backoff for 429 responses. ## Stripe Payment Integration Stripe provides both client-side (Stripe.js) and server-side APIs. For PCI compliance, never pass raw card numbers through your server—use Stripe Elements or the Payment Intents API. Webhooks are essential for handling asynchronous events like payment succeeded or subscription renewed. Configure your webhook endpoint to verify signatures using the Stripe-Signature header. ## ShipStation Integration The ShipStation API is REST-based. Authentication uses API key and API secret in the Authorization header. Endpoints cover orders, shipments, carriers, and warehouses. Poll for new orders or use webhooks if available for your plan. Batch operations are supported for bulk label creation. ## Twilio SMS Integration Twilio's REST API requires Account SID and Auth Token. The Messaging API endpoint is /2010-04-01/Accounts/{AccountSid}/Messages.json. For two-way messaging, configure a webhook URL to receive incoming messages. Consider using a queue for high-volume outbound SMS to avoid rate limits. # PentaCodes Technical Reference and Integration Documentation # Version 1.0 | Last Updated March 2025 # This document contains technical reference material for common integrations and deployment procedures. ## QuickBooks Online Integration The QuickBooks Online API uses OAuth 2.0 for authentication. You will need to register your application in the Intuit Developer Portal to obtain client credentials. The base URL for the API is https://quickbooks.api.intuit.com/v3/company/{realmId}. Common endpoints include /invoice, /customer, /payment, and /bill. Rate limits apply: 500 requests per minute for production apps. Always implement exponential backoff for 429 responses. ## Stripe Payment Integration Stripe provides both client-side (Stripe.js) and server-side APIs. For PCI compliance, never pass raw card numbers through your server—use Stripe Elements or the Payment Intents API. Webhooks are essential for handling asynchronous events like payment succeeded or subscription renewed. Configure your webhook endpoint to verify signatures using the Stripe-Signature header. ## ShipStation Integration The ShipStation API is REST-based. Authentication uses API key and API secret in the Authorization header. Endpoints cover orders, shipments, carriers, and warehouses. Poll for new orders or use webhooks if available for your plan. Batch operations are supported for bulk label creation. ## Twilio SMS Integration Twilio's REST API requires Account SID and Auth Token. The Messaging API endpoint is /2010-04-01/Accounts/{AccountSid}/Messages.json. For two-way messaging, configure a webhook URL to receive incoming messages. Consider using a queue for high-volume outbound SMS to avoid rate limits. # PentaCodes Technical Reference and Integration Documentation # Version 1.0 | Last Updated March 2025 # This document contains technical reference material for common integrations and deployment procedures. ## QuickBooks Online Integration The QuickBooks Online API uses OAuth 2.0 for authentication. You will need to register your application in the Intuit Developer Portal to obtain client credentials. The base URL for the API is https://quickbooks.api.intuit.com/v3/company/{realmId}. Common endpoints include /invoice, /customer, /payment, and /bill. Rate limits apply: 500 requests per minute for production apps. Always implement exponential backoff for 429 responses. ## Stripe Payment Integration Stripe provides both client-side (Stripe.js) and server-side APIs. For PCI compliance, never pass raw card numbers through your server—use Stripe Elements or the Payment Intents API. Webhooks are essential for handling asynchronous events like payment succeeded or subscription renewed. Configure your webhook endpoint to verify signatures using the Stripe-Signature header. ## ShipStation Integration The ShipStation API is REST-based. Authentication uses API key and API secret in the Authorization header. Endpoints cover orders, shipments, carriers, and warehouses. Poll for new orders or use webhooks if available for your plan. Batch operations are supported for bulk label creation. ## Twilio SMS Integration Twilio's REST API requires Account SID and Auth Token. The Messaging API endpoint is /2010-04-01/Accounts/{AccountSid}/Messages.json. For two-way messaging, configure a webhook URL to receive incoming messages. Consider using a queue for high-volume outbound SMS to avoid rate limits. # PentaCodes Technical Reference and Integration Documentation # Version 1.0 | Last Updated March 2025 # This document contains technical reference material for common integrations and deployment procedures. ## QuickBooks Online Integration The QuickBooks Online API uses OAuth 2.0 for authentication. You will need to register your application in the Intuit Developer Portal to obtain client credentials. The base URL for the API is https://quickbooks.api.intuit.com/v3/company/{realmId}. Common endpoints include /invoice, /customer, /payment, and /bill. Rate limits apply: 500 requests per minute for production apps. Always implement exponential backoff for 429 responses. ## Stripe Payment Integration Stripe provides both client-side (Stripe.js) and server-side APIs. For PCI compliance, never pass raw card numbers through your server—use Stripe Elements or the Payment Intents API. Webhooks are essential for handling asynchronous events like payment succeeded or subscription renewed. Configure your webhook endpoint to verify signatures using the Stripe-Signature header. ## ShipStation Integration The ShipStation API is REST-based. Authentication uses API key and API secret in the Authorization header. Endpoints cover orders, shipments, carriers, and warehouses. Poll for new orders or use webhooks if available for your plan. Batch operations are supported for bulk label creation. ## Twilio SMS Integration Twilio's REST API requires Account SID and Auth Token. The Messaging API endpoint is /2010-04-01/Accounts/{AccountSid}/Messages.json. For two-way messaging, configure a webhook URL to receive incoming messages. Consider using a queue for high-volume outbound SMS to avoid rate limits. # PentaCodes Technical Reference and Integration Documentation # Version 1.0 | Last Updated March 2025 # This document contains technical reference material for common integrations and deployment procedures. ## QuickBooks Online Integration The QuickBooks Online API uses OAuth 2.0 for authentication. You will need to register your application in the Intuit Developer Portal to obtain client credentials. The base URL for the API is https://quickbooks.api.intuit.com/v3/company/{realmId}. Common endpoints include /invoice, /customer, /payment, and /bill. Rate limits apply: 500 requests per minute for production apps. Always implement exponential backoff for 429 responses. ## Stripe Payment Integration Stripe provides both client-side (Stripe.js) and server-side APIs. For PCI compliance, never pass raw card numbers through your server—use Stripe Elements or the Payment Intents API. Webhooks are essential for handling asynchronous events like payment succeeded or subscription renewed. Configure your webhook endpoint to verify signatures using the Stripe-Signature header. ## ShipStation Integration The ShipStation API is REST-based. Authentication uses API key and API secret in the Authorization header. Endpoints cover orders, shipments, carriers, and warehouses. Poll for new orders or use webhooks if available for your plan. Batch operations are supported for bulk label creation. ## Twilio SMS Integration Twilio's REST API requires Account SID and Auth Token. The Messaging API endpoint is /2010-04-01/Accounts/{AccountSid}/Messages.json. For two-way messaging, configure a webhook URL to receive incoming messages. Consider using a queue for high-volume outbound SMS to avoid rate limits. # PentaCodes Technical Reference and Integration Documentation # Version 1.0 | Last Updated March 2025 # This document contains technical reference material for common integrations and deployment procedures. ## QuickBooks Online Integration The QuickBooks Online API uses OAuth 2.0 for authentication. You will need to register your application in the Intuit Developer Portal to obtain client credentials. The base URL for the API is https://quickbooks.api.intuit.com/v3/company/{realmId}. Common endpoints include /invoice, /customer, /payment, and /bill. Rate limits apply: 500 requests per minute for production apps. Always implement exponential backoff for 429 responses. ## Stripe Payment Integration Stripe provides both client-side (Stripe.js) and server-side APIs. For PCI compliance, never pass raw card numbers through your server—use Stripe Elements or the Payment Intents API. Webhooks are essential for handling asynchronous events like payment succeeded or subscription renewed. Configure your webhook endpoint to verify signatures using the Stripe-Signature header. ## ShipStation Integration The ShipStation API is REST-based. Authentication uses API key and API secret in the Authorization header. Endpoints cover orders, shipments, carriers, and warehouses. Poll for new orders or use webhooks if available for your plan. Batch operations are supported for bulk label creation. ## Twilio SMS Integration Twilio's REST API requires Account SID and Auth Token. The Messaging API endpoint is /2010-04-01/Accounts/{AccountSid}/Messages.json. For two-way messaging, configure a webhook URL to receive incoming messages. Consider using a queue for high-volume outbound SMS to avoid rate limits. # PentaCodes Technical Reference and Integration Documentation # Version 1.0 | Last Updated March 2025 # This document contains technical reference material for common integrations and deployment procedures. ## QuickBooks Online Integration The QuickBooks Online API uses OAuth 2.0 for authentication. You will need to register your application in the Intuit Developer Portal to obtain client credentials. The base URL for the API is https://quickbooks.api.intuit.com/v3/company/{realmId}. Common endpoints include /invoice, /customer, /payment, and /bill. Rate limits apply: 500 requests per minute for production apps. Always implement exponential backoff for 429 responses. ## Stripe Payment Integration Stripe provides both client-side (Stripe.js) and server-side APIs. For PCI compliance, never pass raw card numbers through your server—use Stripe Elements or the Payment Intents API. Webhooks are essential for handling asynchronous events like payment succeeded or subscription renewed. Configure your webhook endpoint to verify signatures using the Stripe-Signature header. ## ShipStation Integration The ShipStation API is REST-based. Authentication uses API key and API secret in the Authorization header. Endpoints cover orders, shipments, carriers, and warehouses. Poll for new orders or use webhooks if available for your plan. Batch operations are supported for bulk label creation. ## Twilio SMS Integration Twilio's REST API requires Account SID and Auth Token. The Messaging API endpoint is /2010-04-01/Accounts/{AccountSid}/Messages.json. For two-way messaging, configure a webhook URL to receive incoming messages. Consider using a queue for high-volume outbound SMS to avoid rate limits. # PentaCodes Technical Reference and Integration Documentation # Version 1.0 | Last Updated March 2025 # This document contains technical reference material for common integrations and deployment procedures. ## QuickBooks Online Integration The QuickBooks Online API uses OAuth 2.0 for authentication. You will need to register your application in the Intuit Developer Portal to obtain client credentials. The base URL for the API is https://quickbooks.api.intuit.com/v3/company/{realmId}. Common endpoints include /invoice, /customer, /payment, and /bill. Rate limits apply: 500 requests per minute for production apps. Always implement exponential backoff for 429 responses. ## Stripe Payment Integration Stripe provides both client-side (Stripe.js) and server-side APIs. For PCI compliance, never pass raw card numbers through your server—use Stripe Elements or the Payment Intents API. Webhooks are essential for handling asynchronous events like payment succeeded or subscription renewed. Configure your webhook endpoint to verify signatures using the Stripe-Signature header. ## ShipStation Integration The ShipStation API is REST-based. Authentication uses API key and API secret in the Authorization header. Endpoints cover orders, shipments, carriers, and warehouses. Poll for new orders or use webhooks if available for your plan. Batch operations are supported for bulk label creation. ## Twilio SMS Integration Twilio's REST API requires Account SID and Auth Token. The Messaging API endpoint is /2010-04-01/Accounts/{AccountSid}/Messages.json. For two-way messaging, configure a webhook URL to receive incoming messages. Consider using a queue for high-volume outbound SMS to avoid rate limits. # PentaCodes Technical Reference and Integration Documentation # Version 1.0 | Last Updated March 2025 # This document contains technical reference material for common integrations and deployment procedures. ## QuickBooks Online Integration The QuickBooks Online API uses OAuth 2.0 for authentication. You will need to register your application in the Intuit Developer Portal to obtain client credentials. The base URL for the API is https://quickbooks.api.intuit.com/v3/company/{realmId}. Common endpoints include /invoice, /customer, /payment, and /bill. Rate limits apply: 500 requests per minute for production apps. Always implement exponential backoff for 429 responses. ## Stripe Payment Integration Stripe provides both client-side (Stripe.js) and server-side APIs. For PCI compliance, never pass raw card numbers through your server—use Stripe Elements or the Payment Intents API. Webhooks are essential for handling asynchronous events like payment succeeded or subscription renewed. Configure your webhook endpoint to verify signatures using the Stripe-Signature header. ## ShipStation Integration The ShipStation API is REST-based. Authentication uses API key and API secret in the Authorization header. Endpoints cover orders, shipments, carriers, and warehouses. Poll for new orders or use webhooks if available for your plan. Batch operations are supported for bulk label creation. ## Twilio SMS Integration Twilio's REST API requires Account SID and Auth Token. The Messaging API endpoint is /2010-04-01/Accounts/{AccountSid}/Messages.json. For two-way messaging, configure a webhook URL to receive incoming messages. Consider using a queue for high-volume outbound SMS to avoid rate limits. # PentaCodes Technical Reference and Integration Documentation # Version 1.0 | Last Updated March 2025 # This document contains technical reference material for common integrations and deployment procedures. ## QuickBooks Online Integration The QuickBooks Online API uses OAuth 2.0 for authentication. You will need to register your application in the Intuit Developer Portal to obtain client credentials. The base URL for the API is https://quickbooks.api.intuit.com/v3/company/{realmId}. Common endpoints include /invoice, /customer, /payment, and /bill. Rate limits apply: 500 requests per minute for production apps. Always implement exponential backoff for 429 responses. ## Stripe Payment Integration Stripe provides both client-side (Stripe.js) and server-side APIs. For PCI compliance, never pass raw card numbers through your server—use Stripe Elements or the Payment Intents API. Webhooks are essential for handling asynchronous events like payment succeeded or subscription renewed. Configure your webhook endpoint to verify signatures using the Stripe-Signature header. ## ShipStation Integration The ShipStation API is REST-based. Authentication uses API key and API secret in the Authorization header. Endpoints cover orders, shipments, carriers, and warehouses. Poll for new orders or use webhooks if available for your plan. Batch operations are supported for bulk label creation. ## Twilio SMS Integration Twilio's REST API requires Account SID and Auth Token. The Messaging API endpoint is /2010-04-01/Accounts/{AccountSid}/Messages.json. For two-way messaging, configure a webhook URL to receive incoming messages. Consider using a queue for high-volume outbound SMS to avoid rate limits. # PentaCodes Technical Reference and Integration Documentation # Version 1.0 | Last Updated March 2025 # This document contains technical reference material for common integrations and deployment procedures. ## QuickBooks Online Integration The QuickBooks Online API uses OAuth 2.0 for authentication. You will need to register your application in the Intuit Developer Portal to obtain client credentials. The base URL for the API is https://quickbooks.api.intuit.com/v3/company/{realmId}. Common endpoints include /invoice, /customer, /payment, and /bill. Rate limits apply: 500 requests per minute for production apps. Always implement exponential backoff for 429 responses. ## Stripe Payment Integration Stripe provides both client-side (Stripe.js) and server-side APIs. For PCI compliance, never pass raw card numbers through your server—use Stripe Elements or the Payment Intents API. Webhooks are essential for handling asynchronous events like payment succeeded or subscription renewed. Configure your webhook endpoint to verify signatures using the Stripe-Signature header. ## ShipStation Integration The ShipStation API is REST-based. Authentication uses API key and API secret in the Authorization header. Endpoints cover orders, shipments, carriers, and warehouses. Poll for new orders or use webhooks if available for your plan. Batch operations are supported for bulk label creation. ## Twilio SMS Integration Twilio's REST API requires Account SID and Auth Token. The Messaging API endpoint is /2010-04-01/Accounts/{AccountSid}/Messages.json. For two-way messaging, configure a webhook URL to receive incoming messages. Consider using a queue for high-volume outbound SMS to avoid rate limits. # PentaCodes Technical Reference and Integration Documentation # Version 1.0 | Last Updated March 2025 # This document contains technical reference material for common integrations and deployment procedures. ## QuickBooks Online Integration The QuickBooks Online API uses OAuth 2.0 for authentication. You will need to register your application in the Intuit Developer Portal to obtain client credentials. The base URL for the API is https://quickbooks.api.intuit.com/v3/company/{realmId}. Common endpoints include /invoice, /customer, /payment, and /bill. Rate limits apply: 500 requests per minute for production apps. Always implement exponential backoff for 429 responses. ## Stripe Payment Integration Stripe provides both client-side (Stripe.js) and server-side APIs. For PCI compliance, never pass raw card numbers through your server—use Stripe Elements or the Payment Intents API. Webhooks are essential for handling asynchronous events like payment succeeded or subscription renewed. Configure your webhook endpoint to verify signatures using the Stripe-Signature header. ## ShipStation Integration The ShipStation API is REST-based. Authentication uses API key and API secret in the Authorization header. Endpoints cover orders, shipments, carriers, and warehouses. Poll for new orders or use webhooks if available for your plan. Batch operations are supported for bulk label creation. ## Twilio SMS Integration Twilio's REST API requires Account SID and Auth Token. The Messaging API endpoint is /2010-04-01/Accounts/{AccountSid}/Messages.json. For two-way messaging, configure a webhook URL to receive incoming messages. Consider using a queue for high-volume outbound SMS to avoid rate limits. # PentaCodes Technical Reference and Integration Documentation # Version 1.0 | Last Updated March 2025 # This document contains technical reference material for common integrations and deployment procedures. ## QuickBooks Online Integration The QuickBooks Online API uses OAuth 2.0 for authentication. You will need to register your application in the Intuit Developer Portal to obtain client credentials. The base URL for the API is https://quickbooks.api.intuit.com/v3/company/{realmId}. Common endpoints include /invoice, /customer, /payment, and /bill. Rate limits apply: 500 requests per minute for production apps. Always implement exponential backoff for 429 responses. ## Stripe Payment Integration Stripe provides both client-side (Stripe.js) and server-side APIs. For PCI compliance, never pass raw card numbers through your server—use Stripe Elements or the Payment Intents API. Webhooks are essential for handling asynchronous events like payment succeeded or subscription renewed. Configure your webhook endpoint to verify signatures using the Stripe-Signature header. ## ShipStation Integration The ShipStation API is REST-based. Authentication uses API key and API secret in the Authorization header. Endpoints cover orders, shipments, carriers, and warehouses. Poll for new orders or use webhooks if available for your plan. Batch operations are supported for bulk label creation. ## Twilio SMS Integration Twilio's REST API requires Account SID and Auth Token. The Messaging API endpoint is /2010-04-01/Accounts/{AccountSid}/Messages.json. For two-way messaging, configure a webhook URL to receive incoming messages. Consider using a queue for high-volume outbound SMS to avoid rate limits. # PentaCodes Technical Reference and Integration Documentation # Version 1.0 | Last Updated March 2025 # This document contains technical reference material for common integrations and deployment procedures. ## QuickBooks Online Integration The QuickBooks Online API uses OAuth 2.0 for authentication. You will need to register your application in the Intuit Developer Portal to obtain client credentials. The base URL for the API is https://quickbooks.api.intuit.com/v3/company/{realmId}. Common endpoints include /invoice, /customer, /payment, and /bill. Rate limits apply: 500 requests per minute for production apps. Always implement exponential backoff for 429 responses. ## Stripe Payment Integration Stripe provides both client-side (Stripe.js) and server-side APIs. For PCI compliance, never pass raw card numbers through your server—use Stripe Elements or the Payment Intents API. Webhooks are essential for handling asynchronous events like payment succeeded or subscription renewed. Configure your webhook endpoint to verify signatures using the Stripe-Signature header. ## ShipStation Integration The ShipStation API is REST-based. Authentication uses API key and API secret in the Authorization header. Endpoints cover orders, shipments, carriers, and warehouses. Poll for new orders or use webhooks if available for your plan. Batch operations are supported for bulk label creation. ## Twilio SMS Integration Twilio's REST API requires Account SID and Auth Token. The Messaging API endpoint is /2010-04-01/Accounts/{AccountSid}/Messages.json. For two-way messaging, configure a webhook URL to receive incoming messages. Consider using a queue for high-volume outbound SMS to avoid rate limits. # PentaCodes Technical Reference and Integration Documentation # Version 1.0 | Last Updated March 2025 # This document contains technical reference material for common integrations and deployment procedures. ## QuickBooks Online Integration The QuickBooks Online API uses OAuth 2.0 for authentication. You will need to register your application in the Intuit Developer Portal to obtain client credentials. The base URL for the API is https://quickbooks.api.intuit.com/v3/company/{realmId}. Common endpoints include /invoice, /customer, /payment, and /bill. Rate limits apply: 500 requests per minute for production apps. Always implement exponential backoff for 429 responses. ## Stripe Payment Integration Stripe provides both client-side (Stripe.js) and server-side APIs. For PCI compliance, never pass raw card numbers through your server—use Stripe Elements or the Payment Intents API. Webhooks are essential for handling asynchronous events like payment succeeded or subscription renewed. Configure your webhook endpoint to verify signatures using the Stripe-Signature header. ## ShipStation Integration The ShipStation API is REST-based. Authentication uses API key and API secret in the Authorization header. Endpoints cover orders, shipments, carriers, and warehouses. Poll for new orders or use webhooks if available for your plan. Batch operations are supported for bulk label creation. ## Twilio SMS Integration Twilio's REST API requires Account SID and Auth Token. The Messaging API endpoint is /2010-04-01/Accounts/{AccountSid}/Messages.json. For two-way messaging, configure a webhook URL to receive incoming messages. Consider using a queue for high-volume outbound SMS to avoid rate limits. # PentaCodes Technical Reference and Integration Documentation # Version 1.0 | Last Updated March 2025 # This document contains technical reference material for common integrations and deployment procedures. ## QuickBooks Online Integration The QuickBooks Online API uses OAuth 2.0 for authentication. You will need to register your application in the Intuit Developer Portal to obtain client credentials. The base URL for the API is https://quickbooks.api.intuit.com/v3/company/{realmId}. Common endpoints include /invoice, /customer, /payment, and /bill. Rate limits apply: 500 requests per minute for production apps. Always implement exponential backoff for 429 responses. ## Stripe Payment Integration Stripe provides both client-side (Stripe.js) and server-side APIs. For PCI compliance, never pass raw card numbers through your server—use Stripe Elements or the Payment Intents API. Webhooks are essential for handling asynchronous events like payment succeeded or subscription renewed. Configure your webhook endpoint to verify signatures using the Stripe-Signature header. ## ShipStation Integration The ShipStation API is REST-based. Authentication uses API key and API secret in the Authorization header. Endpoints cover orders, shipments, carriers, and warehouses. Poll for new orders or use webhooks if available for your plan. Batch operations are supported for bulk label creation. ## Twilio SMS Integration Twilio's REST API requires Account SID and Auth Token. The Messaging API endpoint is /2010-04-01/Accounts/{AccountSid}/Messages.json. For two-way messaging, configure a webhook URL to receive incoming messages. Consider using a queue for high-volume outbound SMS to avoid rate limits. # PentaCodes Technical Reference and Integration Documentation # Version 1.0 | Last Updated March 2025 # This document contains technical reference material for common integrations and deployment procedures. ## QuickBooks Online Integration The QuickBooks Online API uses OAuth 2.0 for authentication. You will need to register your application in the Intuit Developer Portal to obtain client credentials. The base URL for the API is https://quickbooks.api.intuit.com/v3/company/{realmId}. Common endpoints include /invoice, /customer, /payment, and /bill. Rate limits apply: 500 requests per minute for production apps. Always implement exponential backoff for 429 responses. ## Stripe Payment Integration Stripe provides both client-side (Stripe.js) and server-side APIs. For PCI compliance, never pass raw card numbers through your server—use Stripe Elements or the Payment Intents API. Webhooks are essential for handling asynchronous events like payment succeeded or subscription renewed. Configure your webhook endpoint to verify signatures using the Stripe-Signature header. ## ShipStation Integration The ShipStation API is REST-based. Authentication uses API key and API secret in the Authorization header. Endpoints cover orders, shipments, carriers, and warehouses. Poll for new orders or use webhooks if available for your plan. Batch operations are supported for bulk label creation. ## Twilio SMS Integration Twilio's REST API requires Account SID and Auth Token. The Messaging API endpoint is /2010-04-01/Accounts/{AccountSid}/Messages.json. For two-way messaging, configure a webhook URL to receive incoming messages. Consider using a queue for high-volume outbound SMS to avoid rate limits. # PentaCodes Technical Reference and Integration Documentation # Version 1.0 | Last Updated March 2025 # This document contains technical reference material for common integrations and deployment procedures. ## QuickBooks Online Integration The QuickBooks Online API uses OAuth 2.0 for authentication. You will need to register your application in the Intuit Developer Portal to obtain client credentials. The base URL for the API is https://quickbooks.api.intuit.com/v3/company/{realmId}. Common endpoints include /invoice, /customer, /payment, and /bill. Rate limits apply: 500 requests per minute for production apps. Always implement exponential backoff for 429 responses. ## Stripe Payment Integration Stripe provides both client-side (Stripe.js) and server-side APIs. For PCI compliance, never pass raw card numbers through your server—use Stripe Elements or the Payment Intents API. Webhooks are essential for handling asynchronous events like payment succeeded or subscription renewed. Configure your webhook endpoint to verify signatures using the Stripe-Signature header. ## ShipStation Integration The ShipStation API is REST-based. Authentication uses API key and API secret in the Authorization header. Endpoints cover orders, shipments, carriers, and warehouses. Poll for new orders or use webhooks if available for your plan. Batch operations are supported for bulk label creation. ## Twilio SMS Integration Twilio's REST API requires Account SID and Auth Token. The Messaging API endpoint is /2010-04-01/Accounts/{AccountSid}/Messages.json. For two-way messaging, configure a webhook URL to receive incoming messages. Consider using a queue for high-volume outbound SMS to avoid rate limits. # PentaCodes Technical Reference and Integration Documentation # Version 1.0 | Last Updated March 2025 # This document contains technical reference material for common integrations and deployment procedures. ## QuickBooks Online Integration The QuickBooks Online API uses OAuth 2.0 for authentication. You will need to register your application in the Intuit Developer Portal to obtain client credentials. The base URL for the API is https://quickbooks.api.intuit.com/v3/company/{realmId}. Common endpoints include /invoice, /customer, /payment, and /bill. Rate limits apply: 500 requests per minute for production apps. Always implement exponential backoff for 429 responses. ## Stripe Payment Integration Stripe provides both client-side (Stripe.js) and server-side APIs. For PCI compliance, never pass raw card numbers through your server—use Stripe Elements or the Payment Intents API. Webhooks are essential for handling asynchronous events like payment succeeded or subscription renewed. Configure your webhook endpoint to verify signatures using the Stripe-Signature header. ## ShipStation Integration The ShipStation API is REST-based. Authentication uses API key and API secret in the Authorization header. Endpoints cover orders, shipments, carriers, and warehouses. Poll for new orders or use webhooks if available for your plan. Batch operations are supported for bulk label creation. ## Twilio SMS Integration Twilio's REST API requires Account SID and Auth Token. The Messaging API endpoint is /2010-04-01/Accounts/{AccountSid}/Messages.json. For two-way messaging, configure a webhook URL to receive incoming messages. Consider using a queue for high-volume outbound SMS to avoid rate limits. # PentaCodes Technical Reference and Integration Documentation # Version 1.0 | Last Updated March 2025 # This document contains technical reference material for common integrations and deployment procedures. ## QuickBooks Online Integration The QuickBooks Online API uses OAuth 2.0 for authentication. You will need to register your application in the Intuit Developer Portal to obtain client credentials. The base URL for the API is https://quickbooks.api.intuit.com/v3/company/{realmId}. Common endpoints include /invoice, /customer, /payment, and /bill. Rate limits apply: 500 requests per minute for production apps. Always implement exponential backoff for 429 responses. ## Stripe Payment Integration Stripe provides both client-side (Stripe.js) and server-side APIs. For PCI compliance, never pass raw card numbers through your server—use Stripe Elements or the Payment Intents API. Webhooks are essential for handling asynchronous events like payment succeeded or subscription renewed. Configure your webhook endpoint to verify signatures using the Stripe-Signature header. ## ShipStation Integration The ShipStation API is REST-based. Authentication uses API key and API secret in the Authorization header. Endpoints cover orders, shipments, carriers, and warehouses. Poll for new orders or use webhooks if available for your plan. Batch operations are supported for bulk label creation. ## Twilio SMS Integration Twilio's REST API requires Account SID and Auth Token. The Messaging API endpoint is /2010-04-01/Accounts/{AccountSid}/Messages.json. For two-way messaging, configure a webhook URL to receive incoming messages. Consider using a queue for high-volume outbound SMS to avoid rate limits. # PentaCodes Technical Reference and Integration Documentation # Version 1.0 | Last Updated March 2025 # This document contains technical reference material for common integrations and deployment procedures. ## QuickBooks Online Integration The QuickBooks Online API uses OAuth 2.0 for authentication. You will need to register your application in the Intuit Developer Portal to obtain client credentials. The base URL for the API is https://quickbooks.api.intuit.com/v3/company/{realmId}. Common endpoints include /invoice, /customer, /payment, and /bill. Rate limits apply: 500 requests per minute for production apps. Always implement exponential backoff for 429 responses. ## Stripe Payment Integration Stripe provides both client-side (Stripe.js) and server-side APIs. For PCI compliance, never pass raw card numbers through your server—use Stripe Elements or the Payment Intents API. Webhooks are essential for handling asynchronous events like payment succeeded or subscription renewed. Configure your webhook endpoint to verify signatures using the Stripe-Signature header. ## ShipStation Integration The ShipStation API is REST-based. Authentication uses API key and API secret in the Authorization header. Endpoints cover orders, shipments, carriers, and warehouses. Poll for new orders or use webhooks if available for your plan. Batch operations are supported for bulk label creation. ## Twilio SMS Integration Twilio's REST API requires Account SID and Auth Token. The Messaging API endpoint is /2010-04-01/Accounts/{AccountSid}/Messages.json. For two-way messaging, configure a webhook URL to receive incoming messages. Consider using a queue for high-volume outbound SMS to avoid rate limits. # PentaCodes Technical Reference and Integration Documentation # Version 1.0 | Last Updated March 2025 # This document contains technical reference material for common integrations and deployment procedures. ## QuickBooks Online Integration The QuickBooks Online API uses OAuth 2.0 for authentication. You will need to register your application in the Intuit Developer Portal to obtain client credentials. The base URL for the API is https://quickbooks.api.intuit.com/v3/company/{realmId}. Common endpoints include /invoice, /customer, /payment, and /bill. Rate limits apply: 500 requests per minute for production apps. Always implement exponential backoff for 429 responses. ## Stripe Payment Integration Stripe provides both client-side (Stripe.js) and server-side APIs. For PCI compliance, never pass raw card numbers through your server—use Stripe Elements or the Payment Intents API. Webhooks are essential for handling asynchronous events like payment succeeded or subscription renewed. Configure your webhook endpoint to verify signatures using the Stripe-Signature header. ## ShipStation Integration The ShipStation API is REST-based. Authentication uses API key and API secret in the Authorization header. Endpoints cover orders, shipments, carriers, and warehouses. Poll for new orders or use webhooks if available for your plan. Batch operations are supported for bulk label creation. ## Twilio SMS Integration Twilio's REST API requires Account SID and Auth Token. The Messaging API endpoint is /2010-04-01/Accounts/{AccountSid}/Messages.json. For two-way messaging, configure a webhook URL to receive incoming messages. Consider using a queue for high-volume outbound SMS to avoid rate limits. # PentaCodes Technical Reference and Integration Documentation # Version 1.0 | Last Updated March 2025 # This document contains technical reference material for common integrations and deployment procedures. ## QuickBooks Online Integration The QuickBooks Online API uses OAuth 2.0 for authentication. You will need to register your application in the Intuit Developer Portal to obtain client credentials. The base URL for the API is https://quickbooks.api.intuit.com/v3/company/{realmId}. Common endpoints include /invoice, /customer, /payment, and /bill. Rate limits apply: 500 requests per minute for production apps. Always implement exponential backoff for 429 responses. ## Stripe Payment Integration Stripe provides both client-side (Stripe.js) and server-side APIs. For PCI compliance, never pass raw card numbers through your server—use Stripe Elements or the Payment Intents API. Webhooks are essential for handling asynchronous events like payment succeeded or subscription renewed. Configure your webhook endpoint to verify signatures using the Stripe-Signature header. ## ShipStation Integration The ShipStation API is REST-based. Authentication uses API key and API secret in the Authorization header. Endpoints cover orders, shipments, carriers, and warehouses. Poll for new orders or use webhooks if available for your plan. Batch operations are supported for bulk label creation. ## Twilio SMS Integration Twilio's REST API requires Account SID and Auth Token. The Messaging API endpoint is /2010-04-01/Accounts/{AccountSid}/Messages.json. For two-way messaging, configure a webhook URL to receive incoming messages. Consider using a queue for high-volume outbound SMS to avoid rate limits. # PentaCodes Technical Reference and Integration Documentation # Version 1.0 | Last Updated March 2025 # This document contains technical reference material for common integrations and deployment procedures. ## QuickBooks Online Integration The QuickBooks Online API uses OAuth 2.0 for authentication. You will need to register your application in the Intuit Developer Portal to obtain client credentials. The base URL for the API is https://quickbooks.api.intuit.com/v3/company/{realmId}. Common endpoints include /invoice, /customer, /payment, and /bill. Rate limits apply: 500 requests per minute for production apps. Always implement exponential backoff for 429 responses. ## Stripe Payment Integration Stripe provides both client-side (Stripe.js) and server-side APIs. For PCI compliance, never pass raw card numbers through your server—use Stripe Elements or the Payment Intents API. Webhooks are essential for handling asynchronous events like payment succeeded or subscription renewed. Configure your webhook endpoint to verify signatures using the Stripe-Signature header. ## ShipStation Integration The ShipStation API is REST-based. Authentication uses API key and API secret in the Authorization header. Endpoints cover orders, shipments, carriers, and warehouses. Poll for new orders or use webhooks if available for your plan. Batch operations are supported for bulk label creation. ## Twilio SMS Integration Twilio's REST API requires Account SID and Auth Token. The Messaging API endpoint is /2010-04-01/Accounts/{AccountSid}/Messages.json. For two-way messaging, configure a webhook URL to receive incoming messages. Consider using a queue for high-volume outbound SMS to avoid rate limits. # PentaCodes Technical Reference and Integration Documentation # Version 1.0 | Last Updated March 2025 # This document contains technical reference material for common integrations and deployment procedures. ## QuickBooks Online Integration The QuickBooks Online API uses OAuth 2.0 for authentication. You will need to register your application in the Intuit Developer Portal to obtain client credentials. The base URL for the API is https://quickbooks.api.intuit.com/v3/company/{realmId}. Common endpoints include /invoice, /customer, /payment, and /bill. Rate limits apply: 500 requests per minute for production apps. Always implement exponential backoff for 429 responses. ## Stripe Payment Integration Stripe provides both client-side (Stripe.js) and server-side APIs. For PCI compliance, never pass raw card numbers through your server—use Stripe Elements or the Payment Intents API. Webhooks are essential for handling asynchronous events like payment succeeded or subscription renewed. Configure your webhook endpoint to verify signatures using the Stripe-Signature header. ## ShipStation Integration The ShipStation API is REST-based. Authentication uses API key and API secret in the Authorization header. Endpoints cover orders, shipments, carriers, and warehouses. Poll for new orders or use webhooks if available for your plan. Batch operations are supported for bulk label creation. ## Twilio SMS Integration Twilio's REST API requires Account SID and Auth Token. The Messaging API endpoint is /2010-04-01/Accounts/{AccountSid}/Messages.json. For two-way messaging, configure a webhook URL to receive incoming messages. Consider using a queue for high-volume outbound SMS to avoid rate limits. # PentaCodes Technical Reference and Integration Documentation # Version 1.0 | Last Updated March 2025 # This document contains technical reference material for common integrations and deployment procedures. ## QuickBooks Online Integration The QuickBooks Online API uses OAuth 2.0 for authentication. You will need to register your application in the Intuit Developer Portal to obtain client credentials. The base URL for the API is https://quickbooks.api.intuit.com/v3/company/{realmId}. Common endpoints include /invoice, /customer, /payment, and /bill. Rate limits apply: 500 requests per minute for production apps. Always implement exponential backoff for 429 responses. ## Stripe Payment Integration Stripe provides both client-side (Stripe.js) and server-side APIs. For PCI compliance, never pass raw card numbers through your server—use Stripe Elements or the Payment Intents API. Webhooks are essential for handling asynchronous events like payment succeeded or subscription renewed. Configure your webhook endpoint to verify signatures using the Stripe-Signature header. ## ShipStation Integration The ShipStation API is REST-based. Authentication uses API key and API secret in the Authorization header. Endpoints cover orders, shipments, carriers, and warehouses. Poll for new orders or use webhooks if available for your plan. Batch operations are supported for bulk label creation. ## Twilio SMS Integration Twilio's REST API requires Account SID and Auth Token. The Messaging API endpoint is /2010-04-01/Accounts/{AccountSid}/Messages.json. For two-way messaging, configure a webhook URL to receive incoming messages. Consider using a queue for high-volume outbound SMS to avoid rate limits. # PentaCodes Technical Reference and Integration Documentation # Version 1.0 | Last Updated March 2025 # This document contains technical reference material for common integrations and deployment procedures. ## QuickBooks Online Integration The QuickBooks Online API uses OAuth 2.0 for authentication. You will need to register your application in the Intuit Developer Portal to obtain client credentials. The base URL for the API is https://quickbooks.api.intuit.com/v3/company/{realmId}. Common endpoints include /invoice, /customer, /payment, and /bill. Rate limits apply: 500 requests per minute for production apps. Always implement exponential backoff for 429 responses. ## Stripe Payment Integration Stripe provides both client-side (Stripe.js) and server-side APIs. For PCI compliance, never pass raw card numbers through your server—use Stripe Elements or the Payment Intents API. Webhooks are essential for handling asynchronous events like payment succeeded or subscription renewed. Configure your webhook endpoint to verify signatures using the Stripe-Signature header. ## ShipStation Integration The ShipStation API is REST-based. Authentication uses API key and API secret in the Authorization header. Endpoints cover orders, shipments, carriers, and warehouses. Poll for new orders or use webhooks if available for your plan. Batch operations are supported for bulk label creation. ## Twilio SMS Integration Twilio's REST API requires Account SID and Auth Token. The Messaging API endpoint is /2010-04-01/Accounts/{AccountSid}/Messages.json. For two-way messaging, configure a webhook URL to receive incoming messages. Consider using a queue for high-volume outbound SMS to avoid rate limits. # PentaCodes Technical Reference and Integration Documentation # Version 1.0 | Last Updated March 2025 # This document contains technical reference material for common integrations and deployment procedures. ## QuickBooks Online Integration The QuickBooks Online API uses OAuth 2.0 for authentication. You will need to register your application in the Intuit Developer Portal to obtain client credentials. The base URL for the API is https://quickbooks.api.intuit.com/v3/company/{realmId}. Common endpoints include /invoice, /customer, /payment, and /bill. Rate limits apply: 500 requests per minute for production apps. Always implement exponential backoff for 429 responses. ## Stripe Payment Integration Stripe provides both client-side (Stripe.js) and server-side APIs. For PCI compliance, never pass raw card numbers through your server—use Stripe Elements or the Payment Intents API. Webhooks are essential for handling asynchronous events like payment succeeded or subscription renewed. Configure your webhook endpoint to verify signatures using the Stripe-Signature header. ## ShipStation Integration The ShipStation API is REST-based. Authentication uses API key and API secret in the Authorization header. Endpoints cover orders, shipments, carriers, and warehouses. Poll for new orders or use webhooks if available for your plan. Batch operations are supported for bulk label creation. ## Twilio SMS Integration Twilio's REST API requires Account SID and Auth Token. The Messaging API endpoint is /2010-04-01/Accounts/{AccountSid}/Messages.json. For two-way messaging, configure a webhook URL to receive incoming messages. Consider using a queue for high-volume outbound SMS to avoid rate limits. # PentaCodes Technical Reference and Integration Documentation # Version 1.0 | Last Updated March 2025 # This document contains technical reference material for common integrations and deployment procedures. ## QuickBooks Online Integration The QuickBooks Online API uses OAuth 2.0 for authentication. You will need to register your application in the Intuit Developer Portal to obtain client credentials. The base URL for the API is https://quickbooks.api.intuit.com/v3/company/{realmId}. Common endpoints include /invoice, /customer, /payment, and /bill. Rate limits apply: 500 requests per minute for production apps. Always implement exponential backoff for 429 responses. ## Stripe Payment Integration Stripe provides both client-side (Stripe.js) and server-side APIs. For PCI compliance, never pass raw card numbers through your server—use Stripe Elements or the Payment Intents API. Webhooks are essential for handling asynchronous events like payment succeeded or subscription renewed. Configure your webhook endpoint to verify signatures using the Stripe-Signature header. ## ShipStation Integration The ShipStation API is REST-based. Authentication uses API key and API secret in the Authorization header. Endpoints cover orders, shipments, carriers, and warehouses. Poll for new orders or use webhooks if available for your plan. Batch operations are supported for bulk label creation. ## Twilio SMS Integration Twilio's REST API requires Account SID and Auth Token. The Messaging API endpoint is /2010-04-01/Accounts/{AccountSid}/Messages.json. For two-way messaging, configure a webhook URL to receive incoming messages. Consider using a queue for high-volume outbound SMS to avoid rate limits. # PentaCodes Technical Reference and Integration Documentation # Version 1.0 | Last Updated March 2025 # This document contains technical reference material for common integrations and deployment procedures. ## QuickBooks Online Integration The QuickBooks Online API uses OAuth 2.0 for authentication. You will need to register your application in the Intuit Developer Portal to obtain client credentials. The base URL for the API is https://quickbooks.api.intuit.com/v3/company/{realmId}. Common endpoints include /invoice, /customer, /payment, and /bill. Rate limits apply: 500 requests per minute for production apps. Always implement exponential backoff for 429 responses. ## Stripe Payment Integration Stripe provides both client-side (Stripe.js) and server-side APIs. For PCI compliance, never pass raw card numbers through your server—use Stripe Elements or the Payment Intents API. Webhooks are essential for handling asynchronous events like payment succeeded or subscription renewed. Configure your webhook endpoint to verify signatures using the Stripe-Signature header. ## ShipStation Integration The ShipStation API is REST-based. Authentication uses API key and API secret in the Authorization header. Endpoints cover orders, shipments, carriers, and warehouses. Poll for new orders or use webhooks if available for your plan. Batch operations are supported for bulk label creation. ## Twilio SMS Integration Twilio's REST API requires Account SID and Auth Token. The Messaging API endpoint is /2010-04-01/Accounts/{AccountSid}/Messages.json. For two-way messaging, configure a webhook URL to receive incoming messages. Consider using a queue for high-volume outbound SMS to avoid rate limits. # PentaCodes Technical Reference and Integration Documentation # Version 1.0 | Last Updated March 2025 # This document contains technical reference material for common integrations and deployment procedures. ## QuickBooks Online Integration The QuickBooks Online API uses OAuth 2.0 for authentication. You will need to register your application in the Intuit Developer Portal to obtain client credentials. The base URL for the API is https://quickbooks.api.intuit.com/v3/company/{realmId}. Common endpoints include /invoice, /customer, /payment, and /bill. Rate limits apply: 500 requests per minute for production apps. Always implement exponential backoff for 429 responses. ## Stripe Payment Integration Stripe provides both client-side (Stripe.js) and server-side APIs. For PCI compliance, never pass raw card numbers through your server—use Stripe Elements or the Payment Intents API. Webhooks are essential for handling asynchronous events like payment succeeded or subscription renewed. Configure your webhook endpoint to verify signatures using the Stripe-Signature header. ## ShipStation Integration The ShipStation API is REST-based. Authentication uses API key and API secret in the Authorization header. Endpoints cover orders, shipments, carriers, and warehouses. Poll for new orders or use webhooks if available for your plan. Batch operations are supported for bulk label creation. ## Twilio SMS Integration Twilio's REST API requires Account SID and Auth Token. The Messaging API endpoint is /2010-04-01/Accounts/{AccountSid}/Messages.json. For two-way messaging, configure a webhook URL to receive incoming messages. Consider using a queue for high-volume outbound SMS to avoid rate limits. # PentaCodes Technical Reference and Integration Documentation # Version 1.0 | Last Updated March 2025 # This document contains technical reference material for common integrations and deployment procedures. ## QuickBooks Online Integration The QuickBooks Online API uses OAuth 2.0 for authentication. You will need to register your application in the Intuit Developer Portal to obtain client credentials. The base URL for the API is https://quickbooks.api.intuit.com/v3/company/{realmId}. Common endpoints include /invoice, /customer, /payment, and /bill. Rate limits apply: 500 requests per minute for production apps. Always implement exponential backoff for 429 responses. ## Stripe Payment Integration Stripe provides both client-side (Stripe.js) and server-side APIs. For PCI compliance, never pass raw card numbers through your server—use Stripe Elements or the Payment Intents API. Webhooks are essential for handling asynchronous events like payment succeeded or subscription renewed. Configure your webhook endpoint to verify signatures using the Stripe-Signature header. ## ShipStation Integration The ShipStation API is REST-based. Authentication uses API key and API secret in the Authorization header. Endpoints cover orders, shipments, carriers, and warehouses. Poll for new orders or use webhooks if available for your plan. Batch operations are supported for bulk label creation. ## Twilio SMS Integration Twilio's REST API requires Account SID and Auth Token. The Messaging API endpoint is /2010-04-01/Accounts/{AccountSid}/Messages.json. For two-way messaging, configure a webhook URL to receive incoming messages. Consider using a queue for high-volume outbound SMS to avoid rate limits. # PentaCodes Technical Reference and Integration Documentation # Version 1.0 | Last Updated March 2025 # This document contains technical reference material for common integrations and deployment procedures. ## QuickBooks Online Integration The QuickBooks Online API uses OAuth 2.0 for authentication. You will need to register your application in the Intuit Developer Portal to obtain client credentials. The base URL for the API is https://quickbooks.api.intuit.com/v3/company/{realmId}. Common endpoints include /invoice, /customer, /payment, and /bill. Rate limits apply: 500 requests per minute for production apps. Always implement exponential backoff for 429 responses. ## Stripe Payment Integration Stripe provides both client-side (Stripe.js) and server-side APIs. For PCI compliance, never pass raw card numbers through your server—use Stripe Elements or the Payment Intents API. Webhooks are essential for handling asynchronous events like payment succeeded or subscription renewed. Configure your webhook endpoint to verify signatures using the Stripe-Signature header. ## ShipStation Integration The ShipStation API is REST-based. Authentication uses API key and API secret in the Authorization header. Endpoints cover orders, shipments, carriers, and warehouses. Poll for new orders or use webhooks if available for your plan. Batch operations are supported for bulk label creation. ## Twilio SMS Integration Twilio's REST API requires Account SID and Auth Token. The Messaging API endpoint is /2010-04-01/Accounts/{AccountSid}/Messages.json. For two-way messaging, configure a webhook URL to receive incoming messages. Consider using a queue for high-volume outbound SMS to avoid rate limits. # PentaCodes Technical Reference and Integration Documentation # Version 1.0 | Last Updated March 2025 # This document contains technical reference material for common integrations and deployment procedures. ## QuickBooks Online Integration The QuickBooks Online API uses OAuth 2.0 for authentication. You will need to register your application in the Intuit Developer Portal to obtain client credentials. The base URL for the API is https://quickbooks.api.intuit.com/v3/company/{realmId}. Common endpoints include /invoice, /customer, /payment, and /bill. Rate limits apply: 500 requests per minute for production apps. Always implement exponential backoff for 429 responses. ## Stripe Payment Integration Stripe provides both client-side (Stripe.js) and server-side APIs. For PCI compliance, never pass raw card numbers through your server—use Stripe Elements or the Payment Intents API. Webhooks are essential for handling asynchronous events like payment succeeded or subscription renewed. Configure your webhook endpoint to verify signatures using the Stripe-Signature header. ## ShipStation Integration The ShipStation API is REST-based. Authentication uses API key and API secret in the Authorization header. Endpoints cover orders, shipments, carriers, and warehouses. Poll for new orders or use webhooks if available for your plan. Batch operations are supported for bulk label creation. ## Twilio SMS Integration Twilio's REST API requires Account SID and Auth Token. The Messaging API endpoint is /2010-04-01/Accounts/{AccountSid}/Messages.json. For two-way messaging, configure a webhook URL to receive incoming messages. Consider using a queue for high-volume outbound SMS to avoid rate limits. # PentaCodes Technical Reference and Integration Documentation # Version 1.0 | Last Updated March 2025 # This document contains technical reference material for common integrations and deployment procedures. ## QuickBooks Online Integration The QuickBooks Online API uses OAuth 2.0 for authentication. You will need to register your application in the Intuit Developer Portal to obtain client credentials. The base URL for the API is https://quickbooks.api.intuit.com/v3/company/{realmId}. Common endpoints include /invoice, /customer, /payment, and /bill. Rate limits apply: 500 requests per minute for production apps. Always implement exponential backoff for 429 responses. ## Stripe Payment Integration Stripe provides both client-side (Stripe.js) and server-side APIs. For PCI compliance, never pass raw card numbers through your server—use Stripe Elements or the Payment Intents API. Webhooks are essential for handling asynchronous events like payment succeeded or subscription renewed. Configure your webhook endpoint to verify signatures using the Stripe-Signature header. ## ShipStation Integration The ShipStation API is REST-based. Authentication uses API key and API secret in the Authorization header. Endpoints cover orders, shipments, carriers, and warehouses. Poll for new orders or use webhooks if available for your plan. Batch operations are supported for bulk label creation. ## Twilio SMS Integration Twilio's REST API requires Account SID and Auth Token. The Messaging API endpoint is /2010-04-01/Accounts/{AccountSid}/Messages.json. For two-way messaging, configure a webhook URL to receive incoming messages. Consider using a queue for high-volume outbound SMS to avoid rate limits. # PentaCodes Technical Reference and Integration Documentation # Version 1.0 | Last Updated March 2025 # This document contains technical reference material for common integrations and deployment procedures. ## QuickBooks Online Integration The QuickBooks Online API uses OAuth 2.0 for authentication. You will need to register your application in the Intuit Developer Portal to obtain client credentials. The base URL for the API is https://quickbooks.api.intuit.com/v3/company/{realmId}. Common endpoints include /invoice, /customer, /payment, and /bill. Rate limits apply: 500 requests per minute for production apps. Always implement exponential backoff for 429 responses. ## Stripe Payment Integration Stripe provides both client-side (Stripe.js) and server-side APIs. For PCI compliance, never pass raw card numbers through your server—use Stripe Elements or the Payment Intents API. Webhooks are essential for handling asynchronous events like payment succeeded or subscription renewed. Configure your webhook endpoint to verify signatures using the Stripe-Signature header. ## ShipStation Integration The ShipStation API is REST-based. Authentication uses API key and API secret in the Authorization header. Endpoints cover orders, shipments, carriers, and warehouses. Poll for new orders or use webhooks if available for your plan. Batch operations are supported for bulk label creation. ## Twilio SMS Integration Twilio's REST API requires Account SID and Auth Token. The Messaging API endpoint is /2010-04-01/Accounts/{AccountSid}/Messages.json. For two-way messaging, configure a webhook URL to receive incoming messages. Consider using a queue for high-volume outbound SMS to avoid rate limits. # PentaCodes Technical Reference and Integration Documentation # Version 1.0 | Last Updated March 2025 # This document contains technical reference material for common integrations and deployment procedures. ## QuickBooks Online Integration The QuickBooks Online API uses OAuth 2.0 for authentication. You will need to register your application in the Intuit Developer Portal to obtain client credentials. The base URL for the API is https://quickbooks.api.intuit.com/v3/company/{realmId}. Common endpoints include /invoice, /customer, /payment, and /bill. Rate limits apply: 500 requests per minute for production apps. Always implement exponential backoff for 429 responses. ## Stripe Payment Integration Stripe provides both client-side (Stripe.js) and server-side APIs. For PCI compliance, never pass raw card numbers through your server—use Stripe Elements or the Payment Intents API. Webhooks are essential for handling asynchronous events like payment succeeded or subscription renewed. Configure your webhook endpoint to verify signatures using the Stripe-Signature header. ## ShipStation Integration The ShipStation API is REST-based. Authentication uses API key and API secret in the Authorization header. Endpoints cover orders, shipments, carriers, and warehouses. Poll for new orders or use webhooks if available for your plan. Batch operations are supported for bulk label creation. ## Twilio SMS Integration Twilio's REST API requires Account SID and Auth Token. The Messaging API endpoint is /2010-04-01/Accounts/{AccountSid}/Messages.json. For two-way messaging, configure a webhook URL to receive incoming messages. Consider using a queue for high-volume outbound SMS to avoid rate limits. # PentaCodes Technical Reference and Integration Documentation # Version 1.0 | Last Updated March 2025 # This document contains technical reference material for common integrations and deployment procedures. ## QuickBooks Online Integration The QuickBooks Online API uses OAuth 2.0 for authentication. You will need to register your application in the Intuit Developer Portal to obtain client credentials. The base URL for the API is https://quickbooks.api.intuit.com/v3/company/{realmId}. Common endpoints include /invoice, /customer, /payment, and /bill. Rate limits apply: 500 requests per minute for production apps. Always implement exponential backoff for 429 responses. ## Stripe Payment Integration Stripe provides both client-side (Stripe.js) and server-side APIs. For PCI compliance, never pass raw card numbers through your server—use Stripe Elements or the Payment Intents API. Webhooks are essential for handling asynchronous events like payment succeeded or subscription renewed. Configure your webhook endpoint to verify signatures using the Stripe-Signature header. ## ShipStation Integration The ShipStation API is REST-based. Authentication uses API key and API secret in the Authorization header. Endpoints cover orders, shipments, carriers, and warehouses. Poll for new orders or use webhooks if available for your plan. Batch operations are supported for bulk label creation. ## Twilio SMS Integration Twilio's REST API requires Account SID and Auth Token. The Messaging API endpoint is /2010-04-01/Accounts/{AccountSid}/Messages.json. For two-way messaging, configure a webhook URL to receive incoming messages. Consider using a queue for high-volume outbound SMS to avoid rate limits. # PentaCodes Technical Reference and Integration Documentation # Version 1.0 | Last Updated March 2025 # This document contains technical reference material for common integrations and deployment procedures. ## QuickBooks Online Integration The QuickBooks Online API uses OAuth 2.0 for authentication. You will need to register your application in the Intuit Developer Portal to obtain client credentials. The base URL for the API is https://quickbooks.api.intuit.com/v3/company/{realmId}. Common endpoints include /invoice, /customer, /payment, and /bill. Rate limits apply: 500 requests per minute for production apps. Always implement exponential backoff for 429 responses. ## Stripe Payment Integration Stripe provides both client-side (Stripe.js) and server-side APIs. For PCI compliance, never pass raw card numbers through your server—use Stripe Elements or the Payment Intents API. Webhooks are essential for handling asynchronous events like payment succeeded or subscription renewed. Configure your webhook endpoint to verify signatures using the Stripe-Signature header. ## ShipStation Integration The ShipStation API is REST-based. Authentication uses API key and API secret in the Authorization header. Endpoints cover orders, shipments, carriers, and warehouses. Poll for new orders or use webhooks if available for your plan. Batch operations are supported for bulk label creation. ## Twilio SMS Integration Twilio's REST API requires Account SID and Auth Token. The Messaging API endpoint is /2010-04-01/Accounts/{AccountSid}/Messages.json. For two-way messaging, configure a webhook URL to receive incoming messages. Consider using a queue for high-volume outbound SMS to avoid rate limits. # PentaCodes Technical Reference and Integration Documentation # Version 1.0 | Last Updated March 2025 # This document contains technical reference material for common integrations and deployment procedures. ## QuickBooks Online Integration The QuickBooks Online API uses OAuth 2.0 for authentication. You will need to register your application in the Intuit Developer Portal to obtain client credentials. The base URL for the API is https://quickbooks.api.intuit.com/v3/company/{realmId}. Common endpoints include /invoice, /customer, /payment, and /bill. Rate limits apply: 500 requests per minute for production apps. Always implement exponential backoff for 429 responses. ## Stripe Payment Integration Stripe provides both client-side (Stripe.js) and server-side APIs. For PCI compliance, never pass raw card numbers through your server—use Stripe Elements or the Payment Intents API. Webhooks are essential for handling asynchronous events like payment succeeded or subscription renewed. Configure your webhook endpoint to verify signatures using the Stripe-Signature header. ## ShipStation Integration The ShipStation API is REST-based. Authentication uses API key and API secret in the Authorization header. Endpoints cover orders, shipments, carriers, and warehouses. Poll for new orders or use webhooks if available for your plan. Batch operations are supported for bulk label creation. ## Twilio SMS Integration Twilio's REST API requires Account SID and Auth Token. The Messaging API endpoint is /2010-04-01/Accounts/{AccountSid}/Messages.json. For two-way messaging, configure a webhook URL to receive incoming messages. Consider using a queue for high-volume outbound SMS to avoid rate limits. # PentaCodes Technical Reference and Integration Documentation # Version 1.0 | Last Updated March 2025 # This document contains technical reference material for common integrations and deployment procedures. ## QuickBooks Online Integration The QuickBooks Online API uses OAuth 2.0 for authentication. You will need to register your application in the Intuit Developer Portal to obtain client credentials. The base URL for the API is https://quickbooks.api.intuit.com/v3/company/{realmId}. Common endpoints include /invoice, /customer, /payment, and /bill. Rate limits apply: 500 requests per minute for production apps. Always implement exponential backoff for 429 responses. ## Stripe Payment Integration Stripe provides both client-side (Stripe.js) and server-side APIs. For PCI compliance, never pass raw card numbers through your server—use Stripe Elements or the Payment Intents API. Webhooks are essential for handling asynchronous events like payment succeeded or subscription renewed. Configure your webhook endpoint to verify signatures using the Stripe-Signature header. ## ShipStation Integration The ShipStation API is REST-based. Authentication uses API key and API secret in the Authorization header. Endpoints cover orders, shipments, carriers, and warehouses. Poll for new orders or use webhooks if available for your plan. Batch operations are supported for bulk label creation. ## Twilio SMS Integration Twilio's REST API requires Account SID and Auth Token. The Messaging API endpoint is /2010-04-01/Accounts/{AccountSid}/Messages.json. For two-way messaging, configure a webhook URL to receive incoming messages. Consider using a queue for high-volume outbound SMS to avoid rate limits. # PentaCodes Technical Reference and Integration Documentation # Version 1.0 | Last Updated March 2025 # This document contains technical reference material for common integrations and deployment procedures. ## QuickBooks Online Integration The QuickBooks Online API uses OAuth 2.0 for authentication. You will need to register your application in the Intuit Developer Portal to obtain client credentials. The base URL for the API is https://quickbooks.api.intuit.com/v3/company/{realmId}. Common endpoints include /invoice, /customer, /payment, and /bill. Rate limits apply: 500 requests per minute for production apps. Always implement exponential backoff for 429 responses. ## Stripe Payment Integration Stripe provides both client-side (Stripe.js) and server-side APIs. For PCI compliance, never pass raw card numbers through your server—use Stripe Elements or the Payment Intents API. Webhooks are essential for handling asynchronous events like payment succeeded or subscription renewed. Configure your webhook endpoint to verify signatures using the Stripe-Signature header. ## ShipStation Integration The ShipStation API is REST-based. Authentication uses API key and API secret in the Authorization header. Endpoints cover orders, shipments, carriers, and warehouses. Poll for new orders or use webhooks if available for your plan. Batch operations are supported for bulk label creation. ## Twilio SMS Integration Twilio's REST API requires Account SID and Auth Token. The Messaging API endpoint is /2010-04-01/Accounts/{AccountSid}/Messages.json. For two-way messaging, configure a webhook URL to receive incoming messages. Consider using a queue for high-volume outbound SMS to avoid rate limits. # PentaCodes Technical Reference and Integration Documentation # Version 1.0 | Last Updated March 2025 # This document contains technical reference material for common integrations and deployment procedures. ## QuickBooks Online Integration The QuickBooks Online API uses OAuth 2.0 for authentication. You will need to register your application in the Intuit Developer Portal to obtain client credentials. The base URL for the API is https://quickbooks.api.intuit.com/v3/company/{realmId}. Common endpoints include /invoice, /customer, /payment, and /bill. Rate limits apply: 500 requests per minute for production apps. Always implement exponential backoff for 429 responses. ## Stripe Payment Integration Stripe provides both client-side (Stripe.js) and server-side APIs. For PCI compliance, never pass raw card numbers through your server—use Stripe Elements or the Payment Intents API. Webhooks are essential for handling asynchronous events like payment succeeded or subscription renewed. Configure your webhook endpoint to verify signatures using the Stripe-Signature header. ## ShipStation Integration The ShipStation API is REST-based. Authentication uses API key and API secret in the Authorization header. Endpoints cover orders, shipments, carriers, and warehouses. Poll for new orders or use webhooks if available for your plan. Batch operations are supported for bulk label creation. ## Twilio SMS Integration Twilio's REST API requires Account SID and Auth Token. The Messaging API endpoint is /2010-04-01/Accounts/{AccountSid}/Messages.json. For two-way messaging, configure a webhook URL to receive incoming messages. Consider using a queue for high-volume outbound SMS to avoid rate limits. # PentaCodes Technical Reference and Integration Documentation # Version 1.0 | Last Updated March 2025 # This document contains technical reference material for common integrations and deployment procedures. ## QuickBooks Online Integration The QuickBooks Online API uses OAuth 2.0 for authentication. You will need to register your application in the Intuit Developer Portal to obtain client credentials. The base URL for the API is https://quickbooks.api.intuit.com/v3/company/{realmId}. Common endpoints include /invoice, /customer, /payment, and /bill. Rate limits apply: 500 requests per minute for production apps. Always implement exponential backoff for 429 responses. ## Stripe Payment Integration Stripe provides both client-side (Stripe.js) and server-side APIs. For PCI compliance, never pass raw card numbers through your server—use Stripe Elements or the Payment Intents API. Webhooks are essential for handling asynchronous events like payment succeeded or subscription renewed. Configure your webhook endpoint to verify signatures using the Stripe-Signature header. ## ShipStation Integration The ShipStation API is REST-based. Authentication uses API key and API secret in the Authorization header. Endpoints cover orders, shipments, carriers, and warehouses. Poll for new orders or use webhooks if available for your plan. Batch operations are supported for bulk label creation. ## Twilio SMS Integration Twilio's REST API requires Account SID and Auth Token. The Messaging API endpoint is /2010-04-01/Accounts/{AccountSid}/Messages.json. For two-way messaging, configure a webhook URL to receive incoming messages. Consider using a queue for high-volume outbound SMS to avoid rate limits. # PentaCodes Technical Reference and Integration Documentation # Version 1.0 | Last Updated March 2025 # This document contains technical reference material for common integrations and deployment procedures. ## QuickBooks Online Integration The QuickBooks Online API uses OAuth 2.0 for authentication. You will need to register your application in the Intuit Developer Portal to obtain client credentials. The base URL for the API is https://quickbooks.api.intuit.com/v3/company/{realmId}. Common endpoints include /invoice, /customer, /payment, and /bill. Rate limits apply: 500 requests per minute for production apps. Always implement exponential backoff for 429 responses. ## Stripe Payment Integration Stripe provides both client-side (Stripe.js) and server-side APIs. For PCI compliance, never pass raw card numbers through your server—use Stripe Elements or the Payment Intents API. Webhooks are essential for handling asynchronous events like payment succeeded or subscription renewed. Configure your webhook endpoint to verify signatures using the Stripe-Signature header. ## ShipStation Integration The ShipStation API is REST-based. Authentication uses API key and API secret in the Authorization header. Endpoints cover orders, shipments, carriers, and warehouses. Poll for new orders or use webhooks if available for your plan. Batch operations are supported for bulk label creation. ## Twilio SMS Integration Twilio's REST API requires Account SID and Auth Token. The Messaging API endpoint is /2010-04-01/Accounts/{AccountSid}/Messages.json. For two-way messaging, configure a webhook URL to receive incoming messages. Consider using a queue for high-volume outbound SMS to avoid rate limits. # PentaCodes Technical Reference and Integration Documentation # Version 1.0 | Last Updated March 2025 # This document contains technical reference material for common integrations and deployment procedures. ## QuickBooks Online Integration The QuickBooks Online API uses OAuth 2.0 for authentication. You will need to register your application in the Intuit Developer Portal to obtain client credentials. The base URL for the API is https://quickbooks.api.intuit.com/v3/company/{realmId}. Common endpoints include /invoice, /customer, /payment, and /bill. Rate limits apply: 500 requests per minute for production apps. Always implement exponential backoff for 429 responses. ## Stripe Payment Integration Stripe provides both client-side (Stripe.js) and server-side APIs. For PCI compliance, never pass raw card numbers through your server—use Stripe Elements or the Payment Intents API. Webhooks are essential for handling asynchronous events like payment succeeded or subscription renewed. Configure your webhook endpoint to verify signatures using the Stripe-Signature header. ## ShipStation Integration The ShipStation API is REST-based. Authentication uses API key and API secret in the Authorization header. Endpoints cover orders, shipments, carriers, and warehouses. Poll for new orders or use webhooks if available for your plan. Batch operations are supported for bulk label creation. ## Twilio SMS Integration Twilio's REST API requires Account SID and Auth Token. The Messaging API endpoint is /2010-04-01/Accounts/{AccountSid}/Messages.json. For two-way messaging, configure a webhook URL to receive incoming messages. Consider using a queue for high-volume outbound SMS to avoid rate limits. # PentaCodes Technical Reference and Integration Documentation # Version 1.0 | Last Updated March 2025 # This document contains technical reference material for common integrations and deployment procedures. ## QuickBooks Online Integration The QuickBooks Online API uses OAuth 2.0 for authentication. You will need to register your application in the Intuit Developer Portal to obtain client credentials. The base URL for the API is https://quickbooks.api.intuit.com/v3/company/{realmId}. Common endpoints include /invoice, /customer, /payment, and /bill. Rate limits apply: 500 requests per minute for production apps. Always implement exponential backoff for 429 responses. ## Stripe Payment Integration Stripe provides both client-side (Stripe.js) and server-side APIs. For PCI compliance, never pass raw card numbers through your server—use Stripe Elements or the Payment Intents API. Webhooks are essential for handling asynchronous events like payment succeeded or subscription renewed. Configure your webhook endpoint to verify signatures using the Stripe-Signature header. ## ShipStation Integration The ShipStation API is REST-based. Authentication uses API key and API secret in the Authorization header. Endpoints cover orders, shipments, carriers, and warehouses. Poll for new orders or use webhooks if available for your plan. Batch operations are supported for bulk label creation. ## Twilio SMS Integration Twilio's REST API requires Account SID and Auth Token. The Messaging API endpoint is /2010-04-01/Accounts/{AccountSid}/Messages.json. For two-way messaging, configure a webhook URL to receive incoming messages. Consider using a queue for high-volume outbound SMS to avoid rate limits. # PentaCodes Technical Reference and Integration Documentation # Version 1.0 | Last Updated March 2025 # This document contains technical reference material for common integrations and deployment procedures. ## QuickBooks Online Integration The QuickBooks Online API uses OAuth 2.0 for authentication. You will need to register your application in the Intuit Developer Portal to obtain client credentials. The base URL for the API is https://quickbooks.api.intuit.com/v3/company/{realmId}. Common endpoints include /invoice, /customer, /payment, and /bill. Rate limits apply: 500 requests per minute for production apps. Always implement exponential backoff for 429 responses. ## Stripe Payment Integration Stripe provides both client-side (Stripe.js) and server-side APIs. For PCI compliance, never pass raw card numbers through your server—use Stripe Elements or the Payment Intents API. Webhooks are essential for handling asynchronous events like payment succeeded or subscription renewed. Configure your webhook endpoint to verify signatures using the Stripe-Signature header. ## ShipStation Integration The ShipStation API is REST-based. Authentication uses API key and API secret in the Authorization header. Endpoints cover orders, shipments, carriers, and warehouses. Poll for new orders or use webhooks if available for your plan. Batch operations are supported for bulk label creation. ## Twilio SMS Integration Twilio's REST API requires Account SID and Auth Token. The Messaging API endpoint is /2010-04-01/Accounts/{AccountSid}/Messages.json. For two-way messaging, configure a webhook URL to receive incoming messages. Consider using a queue for high-volume outbound SMS to avoid rate limits. # PentaCodes Technical Reference and Integration Documentation # Version 1.0 | Last Updated March 2025 # This document contains technical reference material for common integrations and deployment procedures. ## QuickBooks Online Integration The QuickBooks Online API uses OAuth 2.0 for authentication. You will need to register your application in the Intuit Developer Portal to obtain client credentials. The base URL for the API is https://quickbooks.api.intuit.com/v3/company/{realmId}. Common endpoints include /invoice, /customer, /payment, and /bill. Rate limits apply: 500 requests per minute for production apps. Always implement exponential backoff for 429 responses. ## Stripe Payment Integration Stripe provides both client-side (Stripe.js) and server-side APIs. For PCI compliance, never pass raw card numbers through your server—use Stripe Elements or the Payment Intents API. Webhooks are essential for handling asynchronous events like payment succeeded or subscription renewed. Configure your webhook endpoint to verify signatures using the Stripe-Signature header. ## ShipStation Integration The ShipStation API is REST-based. Authentication uses API key and API secret in the Authorization header. Endpoints cover orders, shipments, carriers, and warehouses. Poll for new orders or use webhooks if available for your plan. Batch operations are supported for bulk label creation. ## Twilio SMS Integration Twilio's REST API requires Account SID and Auth Token. The Messaging API endpoint is /2010-04-01/Accounts/{AccountSid}/Messages.json. For two-way messaging, configure a webhook URL to receive incoming messages. Consider using a queue for high-volume outbound SMS to avoid rate limits. # PentaCodes Technical Reference and Integration Documentation # Version 1.0 | Last Updated March 2025 # This document contains technical reference material for common integrations and deployment procedures. ## QuickBooks Online Integration The QuickBooks Online API uses OAuth 2.0 for authentication. You will need to register your application in the Intuit Developer Portal to obtain client credentials. The base URL for the API is https://quickbooks.api.intuit.com/v3/company/{realmId}. Common endpoints include /invoice, /customer, /payment, and /bill. Rate limits apply: 500 requests per minute for production apps. Always implement exponential backoff for 429 responses. ## Stripe Payment Integration Stripe provides both client-side (Stripe.js) and server-side APIs. For PCI compliance, never pass raw card numbers through your server—use Stripe Elements or the Payment Intents API. Webhooks are essential for handling asynchronous events like payment succeeded or subscription renewed. Configure your webhook endpoint to verify signatures using the Stripe-Signature header. ## ShipStation Integration The ShipStation API is REST-based. Authentication uses API key and API secret in the Authorization header. Endpoints cover orders, shipments, carriers, and warehouses. Poll for new orders or use webhooks if available for your plan. Batch operations are supported for bulk label creation. ## Twilio SMS Integration Twilio's REST API requires Account SID and Auth Token. The Messaging API endpoint is /2010-04-01/Accounts/{AccountSid}/Messages.json. For two-way messaging, configure a webhook URL to receive incoming messages. Consider using a queue for high-volume outbound SMS to avoid rate limits. # PentaCodes Technical Reference and Integration Documentation # Version 1.0 | Last Updated March 2025 # This document contains technical reference material for common integrations and deployment procedures. ## QuickBooks Online Integration The QuickBooks Online API uses OAuth 2.0 for authentication. You will need to register your application in the Intuit Developer Portal to obtain client credentials. The base URL for the API is https://quickbooks.api.intuit.com/v3/company/{realmId}. Common endpoints include /invoice, /customer, /payment, and /bill. Rate limits apply: 500 requests per minute for production apps. Always implement exponential backoff for 429 responses. ## Stripe Payment Integration Stripe provides both client-side (Stripe.js) and server-side APIs. For PCI compliance, never pass raw card numbers through your server—use Stripe Elements or the Payment Intents API. Webhooks are essential for handling asynchronous events like payment succeeded or subscription renewed. Configure your webhook endpoint to verify signatures using the Stripe-Signature header. ## ShipStation Integration The ShipStation API is REST-based. Authentication uses API key and API secret in the Authorization header. Endpoints cover orders, shipments, carriers, and warehouses. Poll for new orders or use webhooks if available for your plan. Batch operations are supported for bulk label creation. ## Twilio SMS Integration Twilio's REST API requires Account SID and Auth Token. The Messaging API endpoint is /2010-04-01/Accounts/{AccountSid}/Messages.json. For two-way messaging, configure a webhook URL to receive incoming messages. Consider using a queue for high-volume outbound SMS to avoid rate limits. # PentaCodes Technical Reference and Integration Documentation # Version 1.0 | Last Updated March 2025 # This document contains technical reference material for common integrations and deployment procedures. ## QuickBooks Online Integration The QuickBooks Online API uses OAuth 2.0 for authentication. You will need to register your application in the Intuit Developer Portal to obtain client credentials. The base URL for the API is https://quickbooks.api.intuit.com/v3/company/{realmId}. Common endpoints include /invoice, /customer, /payment, and /bill. Rate limits apply: 500 requests per minute for production apps. Always implement exponential backoff for 429 responses. ## Stripe Payment Integration Stripe provides both client-side (Stripe.js) and server-side APIs. For PCI compliance, never pass raw card numbers through your server—use Stripe Elements or the Payment Intents API. Webhooks are essential for handling asynchronous events like payment succeeded or subscription renewed. Configure your webhook endpoint to verify signatures using the Stripe-Signature header. ## ShipStation Integration The ShipStation API is REST-based. Authentication uses API key and API secret in the Authorization header. Endpoints cover orders, shipments, carriers, and warehouses. Poll for new orders or use webhooks if available for your plan. Batch operations are supported for bulk label creation. ## Twilio SMS Integration Twilio's REST API requires Account SID and Auth Token. The Messaging API endpoint is /2010-04-01/Accounts/{AccountSid}/Messages.json. For two-way messaging, configure a webhook URL to receive incoming messages. Consider using a queue for high-volume outbound SMS to avoid rate limits. # PentaCodes Technical Reference and Integration Documentation # Version 1.0 | Last Updated March 2025 # This document contains technical reference material for common integrations and deployment procedures. ## QuickBooks Online Integration The QuickBooks Online API uses OAuth 2.0 for authentication. You will need to register your application in the Intuit Developer Portal to obtain client credentials. The base URL for the API is https://quickbooks.api.intuit.com/v3/company/{realmId}. Common endpoints include /invoice, /customer, /payment, and /bill. Rate limits apply: 500 requests per minute for production apps. Always implement exponential backoff for 429 responses. ## Stripe Payment Integration Stripe provides both client-side (Stripe.js) and server-side APIs. For PCI compliance, never pass raw card numbers through your server—use Stripe Elements or the Payment Intents API. Webhooks are essential for handling asynchronous events like payment succeeded or subscription renewed. Configure your webhook endpoint to verify signatures using the Stripe-Signature header. ## ShipStation Integration The ShipStation API is REST-based. Authentication uses API key and API secret in the Authorization header. Endpoints cover orders, shipments, carriers, and warehouses. Poll for new orders or use webhooks if available for your plan. Batch operations are supported for bulk label creation. ## Twilio SMS Integration Twilio's REST API requires Account SID and Auth Token. The Messaging API endpoint is /2010-04-01/Accounts/{AccountSid}/Messages.json. For two-way messaging, configure a webhook URL to receive incoming messages. Consider using a queue for high-volume outbound SMS to avoid rate limits. # PentaCodes Technical Reference and Integration Documentation # Version 1.0 | Last Updated March 2025 # This document contains technical reference material for common integrations and deployment procedures. ## QuickBooks Online Integration The QuickBooks Online API uses OAuth 2.0 for authentication. You will need to register your application in the Intuit Developer Portal to obtain client credentials. The base URL for the API is https://quickbooks.api.intuit.com/v3/company/{realmId}. Common endpoints include /invoice, /customer, /payment, and /bill. Rate limits apply: 500 requests per minute for production apps. Always implement exponential backoff for 429 responses. ## Stripe Payment Integration Stripe provides both client-side (Stripe.js) and server-side APIs. For PCI compliance, never pass raw card numbers through your server—use Stripe Elements or the Payment Intents API. Webhooks are essential for handling asynchronous events like payment succeeded or subscription renewed. Configure your webhook endpoint to verify signatures using the Stripe-Signature header. ## ShipStation Integration The ShipStation API is REST-based. Authentication uses API key and API secret in the Authorization header. Endpoints cover orders, shipments, carriers, and warehouses. Poll for new orders or use webhooks if available for your plan. Batch operations are supported for bulk label creation. ## Twilio SMS Integration Twilio's REST API requires Account SID and Auth Token. The Messaging API endpoint is /2010-04-01/Accounts/{AccountSid}/Messages.json. For two-way messaging, configure a webhook URL to receive incoming messages. Consider using a queue for high-volume outbound SMS to avoid rate limits. # PentaCodes Technical Reference and Integration Documentation # Version 1.0 | Last Updated March 2025 # This document contains technical reference material for common integrations and deployment procedures. ## QuickBooks Online Integration The QuickBooks Online API uses OAuth 2.0 for authentication. You will need to register your application in the Intuit Developer Portal to obtain client credentials. The base URL for the API is https://quickbooks.api.intuit.com/v3/company/{realmId}. Common endpoints include /invoice, /customer, /payment, and /bill. Rate limits apply: 500 requests per minute for production apps. Always implement exponential backoff for 429 responses. ## Stripe Payment Integration Stripe provides both client-side (Stripe.js) and server-side APIs. For PCI compliance, never pass raw card numbers through your server—use Stripe Elements or the Payment Intents API. Webhooks are essential for handling asynchronous events like payment succeeded or subscription renewed. Configure your webhook endpoint to verify signatures using the Stripe-Signature header. ## ShipStation Integration The ShipStation API is REST-based. Authentication uses API key and API secret in the Authorization header. Endpoints cover orders, shipments, carriers, and warehouses. Poll for new orders or use webhooks if available for your plan. Batch operations are supported for bulk label creation. ## Twilio SMS Integration Twilio's REST API requires Account SID and Auth Token. The Messaging API endpoint is /2010-04-01/Accounts/{AccountSid}/Messages.json. For two-way messaging, configure a webhook URL to receive incoming messages. Consider using a queue for high-volume outbound SMS to avoid rate limits. # PentaCodes Technical Reference and Integration Documentation # Version 1.0 | Last Updated March 2025 # This document contains technical reference material for common integrations and deployment procedures. ## QuickBooks Online Integration The QuickBooks Online API uses OAuth 2.0 for authentication. You will need to register your application in the Intuit Developer Portal to obtain client credentials. The base URL for the API is https://quickbooks.api.intuit.com/v3/company/{realmId}. Common endpoints include /invoice, /customer, /payment, and /bill. Rate limits apply: 500 requests per minute for production apps. Always implement exponential backoff for 429 responses. ## Stripe Payment Integration Stripe provides both client-side (Stripe.js) and server-side APIs. For PCI compliance, never pass raw card numbers through your server—use Stripe Elements or the Payment Intents API. Webhooks are essential for handling asynchronous events like payment succeeded or subscription renewed. Configure your webhook endpoint to verify signatures using the Stripe-Signature header. ## ShipStation Integration The ShipStation API is REST-based. Authentication uses API key and API secret in the Authorization header. Endpoints cover orders, shipments, carriers, and warehouses. Poll for new orders or use webhooks if available for your plan. Batch operations are supported for bulk label creation. ## Twilio SMS Integration Twilio's REST API requires Account SID and Auth Token. The Messaging API endpoint is /2010-04-01/Accounts/{AccountSid}/Messages.json. For two-way messaging, configure a webhook URL to receive incoming messages. Consider using a queue for high-volume outbound SMS to avoid rate limits. # PentaCodes Technical Reference and Integration Documentation # Version 1.0 | Last Updated March 2025 # This document contains technical reference material for common integrations and deployment procedures. ## QuickBooks Online Integration The QuickBooks Online API uses OAuth 2.0 for authentication. You will need to register your application in the Intuit Developer Portal to obtain client credentials. The base URL for the API is https://quickbooks.api.intuit.com/v3/company/{realmId}. Common endpoints include /invoice, /customer, /payment, and /bill. Rate limits apply: 500 requests per minute for production apps. Always implement exponential backoff for 429 responses. ## Stripe Payment Integration Stripe provides both client-side (Stripe.js) and server-side APIs. For PCI compliance, never pass raw card numbers through your server—use Stripe Elements or the Payment Intents API. Webhooks are essential for handling asynchronous events like payment succeeded or subscription renewed. Configure your webhook endpoint to verify signatures using the Stripe-Signature header. ## ShipStation Integration The ShipStation API is REST-based. Authentication uses API key and API secret in the Authorization header. Endpoints cover orders, shipments, carriers, and warehouses. Poll for new orders or use webhooks if available for your plan. Batch operations are supported for bulk label creation. ## Twilio SMS Integration Twilio's REST API requires Account SID and Auth Token. The Messaging API endpoint is /2010-04-01/Accounts/{AccountSid}/Messages.json. For two-way messaging, configure a webhook URL to receive incoming messages. Consider using a queue for high-volume outbound SMS to avoid rate limits. # PentaCodes Technical Reference and Integration Documentation # Version 1.0 | Last Updated March 2025 # This document contains technical reference material for common integrations and deployment procedures. ## QuickBooks Online Integration The QuickBooks Online API uses OAuth 2.0 for authentication. You will need to register your application in the Intuit Developer Portal to obtain client credentials. The base URL for the API is https://quickbooks.api.intuit.com/v3/company/{realmId}. Common endpoints include /invoice, /customer, /payment, and /bill. Rate limits apply: 500 requests per minute for production apps. Always implement exponential backoff for 429 responses. ## Stripe Payment Integration Stripe provides both client-side (Stripe.js) and server-side APIs. For PCI compliance, never pass raw card numbers through your server—use Stripe Elements or the Payment Intents API. Webhooks are essential for handling asynchronous events like payment succeeded or subscription renewed. Configure your webhook endpoint to verify signatures using the Stripe-Signature header. ## ShipStation Integration The ShipStation API is REST-based. Authentication uses API key and API secret in the Authorization header. Endpoints cover orders, shipments, carriers, and warehouses. Poll for new orders or use webhooks if available for your plan. Batch operations are supported for bulk label creation. ## Twilio SMS Integration Twilio's REST API requires Account SID and Auth Token. The Messaging API endpoint is /2010-04-01/Accounts/{AccountSid}/Messages.json. For two-way messaging, configure a webhook URL to receive incoming messages. Consider using a queue for high-volume outbound SMS to avoid rate limits. # PentaCodes Technical Reference and Integration Documentation # Version 1.0 | Last Updated March 2025 # This document contains technical reference material for common integrations and deployment procedures. ## QuickBooks Online Integration The QuickBooks Online API uses OAuth 2.0 for authentication. You will need to register your application in the Intuit Developer Portal to obtain client credentials. The base URL for the API is https://quickbooks.api.intuit.com/v3/company/{realmId}. Common endpoints include /invoice, /customer, /payment, and /bill. Rate limits apply: 500 requests per minute for production apps. Always implement exponential backoff for 429 responses. ## Stripe Payment Integration Stripe provides both client-side (Stripe.js) and server-side APIs. For PCI compliance, never pass raw card numbers through your server—use Stripe Elements or the Payment Intents API. Webhooks are essential for handling asynchronous events like payment succeeded or subscription renewed. Configure your webhook endpoint to verify signatures using the Stripe-Signature header. ## ShipStation Integration The ShipStation API is REST-based. Authentication uses API key and API secret in the Authorization header. Endpoints cover orders, shipments, carriers, and warehouses. Poll for new orders or use webhooks if available for your plan. Batch operations are supported for bulk label creation. ## Twilio SMS Integration Twilio's REST API requires Account SID and Auth Token. The Messaging API endpoint is /2010-04-01/Accounts/{AccountSid}/Messages.json. For two-way messaging, configure a webhook URL to receive incoming messages. Consider using a queue for high-volume outbound SMS to avoid rate limits. # PentaCodes Technical Reference and Integration Documentation # Version 1.0 | Last Updated March 2025 # This document contains technical reference material for common integrations and deployment procedures. ## QuickBooks Online Integration The QuickBooks Online API uses OAuth 2.0 for authentication. You will need to register your application in the Intuit Developer Portal to obtain client credentials. The base URL for the API is https://quickbooks.api.intuit.com/v3/company/{realmId}. Common endpoints include /invoice, /customer, /payment, and /bill. Rate limits apply: 500 requests per minute for production apps. Always implement exponential backoff for 429 responses. ## Stripe Payment Integration Stripe provides both client-side (Stripe.js) and server-side APIs. For PCI compliance, never pass raw card numbers through your server—use Stripe Elements or the Payment Intents API. Webhooks are essential for handling asynchronous events like payment succeeded or subscription renewed. Configure your webhook endpoint to verify signatures using the Stripe-Signature header. ## ShipStation Integration The ShipStation API is REST-based. Authentication uses API key and API secret in the Authorization header. Endpoints cover orders, shipments, carriers, and warehouses. Poll for new orders or use webhooks if available for your plan. Batch operations are supported for bulk label creation. ## Twilio SMS Integration Twilio's REST API requires Account SID and Auth Token. The Messaging API endpoint is /2010-04-01/Accounts/{AccountSid}/Messages.json. For two-way messaging, configure a webhook URL to receive incoming messages. Consider using a queue for high-volume outbound SMS to avoid rate limits. # PentaCodes Technical Reference and Integration Documentation # Version 1.0 | Last Updated March 2025 # This document contains technical reference material for common integrations and deployment procedures. ## QuickBooks Online Integration The QuickBooks Online API uses OAuth 2.0 for authentication. You will need to register your application in the Intuit Developer Portal to obtain client credentials. The base URL for the API is https://quickbooks.api.intuit.com/v3/company/{realmId}. Common endpoints include /invoice, /customer, /payment, and /bill. Rate limits apply: 500 requests per minute for production apps. Always implement exponential backoff for 429 responses. ## Stripe Payment Integration Stripe provides both client-side (Stripe.js) and server-side APIs. For PCI compliance, never pass raw card numbers through your server—use Stripe Elements or the Payment Intents API. Webhooks are essential for handling asynchronous events like payment succeeded or subscription renewed. Configure your webhook endpoint to verify signatures using the Stripe-Signature header. ## ShipStation Integration The ShipStation API is REST-based. Authentication uses API key and API secret in the Authorization header. Endpoints cover orders, shipments, carriers, and warehouses. Poll for new orders or use webhooks if available for your plan. Batch operations are supported for bulk label creation. ## Twilio SMS Integration Twilio's REST API requires Account SID and Auth Token. The Messaging API endpoint is /2010-04-01/Accounts/{AccountSid}/Messages.json. For two-way messaging, configure a webhook URL to receive incoming messages. Consider using a queue for high-volume outbound SMS to avoid rate limits. # PentaCodes Technical Reference and Integration Documentation # Version 1.0 | Last Updated March 2025 # This document contains technical reference material for common integrations and deployment procedures. ## QuickBooks Online Integration The QuickBooks Online API uses OAuth 2.0 for authentication. You will need to register your application in the Intuit Developer Portal to obtain client credentials. The base URL for the API is https://quickbooks.api.intuit.com/v3/company/{realmId}. Common endpoints include /invoice, /customer, /payment, and /bill. Rate limits apply: 500 requests per minute for production apps. Always implement exponential backoff for 429 responses. ## Stripe Payment Integration Stripe provides both client-side (Stripe.js) and server-side APIs. For PCI compliance, never pass raw card numbers through your server—use Stripe Elements or the Payment Intents API. Webhooks are essential for handling asynchronous events like payment succeeded or subscription renewed. Configure your webhook endpoint to verify signatures using the Stripe-Signature header. ## ShipStation Integration The ShipStation API is REST-based. Authentication uses API key and API secret in the Authorization header. Endpoints cover orders, shipments, carriers, and warehouses. Poll for new orders or use webhooks if available for your plan. Batch operations are supported for bulk label creation. ## Twilio SMS Integration Twilio's REST API requires Account SID and Auth Token. The Messaging API endpoint is /2010-04-01/Accounts/{AccountSid}/Messages.json. For two-way messaging, configure a webhook URL to receive incoming messages. Consider using a queue for high-volume outbound SMS to avoid rate limits. # PentaCodes Technical Reference and Integration Documentation # Version 1.0 | Last Updated March 2025 # This document contains technical reference material for common integrations and deployment procedures. ## QuickBooks Online Integration The QuickBooks Online API uses OAuth 2.0 for authentication. You will need to register your application in the Intuit Developer Portal to obtain client credentials. The base URL for the API is https://quickbooks.api.intuit.com/v3/company/{realmId}. Common endpoints include /invoice, /customer, /payment, and /bill. Rate limits apply: 500 requests per minute for production apps. Always implement exponential backoff for 429 responses. ## Stripe Payment Integration Stripe provides both client-side (Stripe.js) and server-side APIs. For PCI compliance, never pass raw card numbers through your server—use Stripe Elements or the Payment Intents API. Webhooks are essential for handling asynchronous events like payment succeeded or subscription renewed. Configure your webhook endpoint to verify signatures using the Stripe-Signature header. ## ShipStation Integration The ShipStation API is REST-based. Authentication uses API key and API secret in the Authorization header. Endpoints cover orders, shipments, carriers, and warehouses. Poll for new orders or use webhooks if available for your plan. Batch operations are supported for bulk label creation. ## Twilio SMS Integration Twilio's REST API requires Account SID and Auth Token. The Messaging API endpoint is /2010-04-01/Accounts/{AccountSid}/Messages.json. For two-way messaging, configure a webhook URL to receive incoming messages. Consider using a queue for high-volume outbound SMS to avoid rate limits. # PentaCodes Technical Reference and Integration Documentation # Version 1.0 | Last Updated March 2025 # This document contains technical reference material for common integrations and deployment procedures. ## QuickBooks Online Integration The QuickBooks Online API uses OAuth 2.0 for authentication. You will need to register your application in the Intuit Developer Portal to obtain client credentials. The base URL for the API is https://quickbooks.api.intuit.com/v3/company/{realmId}. Common endpoints include /invoice, /customer, /payment, and /bill. Rate limits apply: 500 requests per minute for production apps. Always implement exponential backoff for 429 responses. ## Stripe Payment Integration Stripe provides both client-side (Stripe.js) and server-side APIs. For PCI compliance, never pass raw card numbers through your server—use Stripe Elements or the Payment Intents API. Webhooks are essential for handling asynchronous events like payment succeeded or subscription renewed. Configure your webhook endpoint to verify signatures using the Stripe-Signature header. ## ShipStation Integration The ShipStation API is REST-based. Authentication uses API key and API secret in the Authorization header. Endpoints cover orders, shipments, carriers, and warehouses. Poll for new orders or use webhooks if available for your plan. Batch operations are supported for bulk label creation. ## Twilio SMS Integration Twilio's REST API requires Account SID and Auth Token. The Messaging API endpoint is /2010-04-01/Accounts/{AccountSid}/Messages.json. For two-way messaging, configure a webhook URL to receive incoming messages. Consider using a queue for high-volume outbound SMS to avoid rate limits. # PentaCodes Technical Reference and Integration Documentation # Version 1.0 | Last Updated March 2025 # This document contains technical reference material for common integrations and deployment procedures. ## QuickBooks Online Integration The QuickBooks Online API uses OAuth 2.0 for authentication. You will need to register your application in the Intuit Developer Portal to obtain client credentials. The base URL for the API is https://quickbooks.api.intuit.com/v3/company/{realmId}. Common endpoints include /invoice, /customer, /payment, and /bill. Rate limits apply: 500 requests per minute for production apps. Always implement exponential backoff for 429 responses. ## Stripe Payment Integration Stripe provides both client-side (Stripe.js) and server-side APIs. For PCI compliance, never pass raw card numbers through your server—use Stripe Elements or the Payment Intents API. Webhooks are essential for handling asynchronous events like payment succeeded or subscription renewed. Configure your webhook endpoint to verify signatures using the Stripe-Signature header. ## ShipStation Integration The ShipStation API is REST-based. Authentication uses API key and API secret in the Authorization header. Endpoints cover orders, shipments, carriers, and warehouses. Poll for new orders or use webhooks if available for your plan. Batch operations are supported for bulk label creation. ## Twilio SMS Integration Twilio's REST API requires Account SID and Auth Token. The Messaging API endpoint is /2010-04-01/Accounts/{AccountSid}/Messages.json. For two-way messaging, configure a webhook URL to receive incoming messages. Consider using a queue for high-volume outbound SMS to avoid rate limits. # PentaCodes Technical Reference and Integration Documentation # Version 1.0 | Last Updated March 2025 # This document contains technical reference material for common integrations and deployment procedures. ## QuickBooks Online Integration The QuickBooks Online API uses OAuth 2.0 for authentication. You will need to register your application in the Intuit Developer Portal to obtain client credentials. The base URL for the API is https://quickbooks.api.intuit.com/v3/company/{realmId}. Common endpoints include /invoice, /customer, /payment, and /bill. Rate limits apply: 500 requests per minute for production apps. Always implement exponential backoff for 429 responses. ## Stripe Payment Integration Stripe provides both client-side (Stripe.js) and server-side APIs. For PCI compliance, never pass raw card numbers through your server—use Stripe Elements or the Payment Intents API. Webhooks are essential for handling asynchronous events like payment succeeded or subscription renewed. Configure your webhook endpoint to verify signatures using the Stripe-Signature header. ## ShipStation Integration The ShipStation API is REST-based. Authentication uses API key and API secret in the Authorization header. Endpoints cover orders, shipments, carriers, and warehouses. Poll for new orders or use webhooks if available for your plan. Batch operations are supported for bulk label creation. ## Twilio SMS Integration Twilio's REST API requires Account SID and Auth Token. The Messaging API endpoint is /2010-04-01/Accounts/{AccountSid}/Messages.json. For two-way messaging, configure a webhook URL to receive incoming messages. Consider using a queue for high-volume outbound SMS to avoid rate limits. # PentaCodes Technical Reference and Integration Documentation # Version 1.0 | Last Updated March 2025 # This document contains technical reference material for common integrations and deployment procedures. ## QuickBooks Online Integration The QuickBooks Online API uses OAuth 2.0 for authentication. You will need to register your application in the Intuit Developer Portal to obtain client credentials. The base URL for the API is https://quickbooks.api.intuit.com/v3/company/{realmId}. Common endpoints include /invoice, /customer, /payment, and /bill. Rate limits apply: 500 requests per minute for production apps. Always implement exponential backoff for 429 responses. ## Stripe Payment Integration Stripe provides both client-side (Stripe.js) and server-side APIs. For PCI compliance, never pass raw card numbers through your server—use Stripe Elements or the Payment Intents API. Webhooks are essential for handling asynchronous events like payment succeeded or subscription renewed. Configure your webhook endpoint to verify signatures using the Stripe-Signature header. ## ShipStation Integration The ShipStation API is REST-based. Authentication uses API key and API secret in the Authorization header. Endpoints cover orders, shipments, carriers, and warehouses. Poll for new orders or use webhooks if available for your plan. Batch operations are supported for bulk label creation. ## Twilio SMS Integration Twilio's REST API requires Account SID and Auth Token. The Messaging API endpoint is /2010-04-01/Accounts/{AccountSid}/Messages.json. For two-way messaging, configure a webhook URL to receive incoming messages. Consider using a queue for high-volume outbound SMS to avoid rate limits. # PentaCodes Technical Reference and Integration Documentation # Version 1.0 | Last Updated March 2025 # This document contains technical reference material for common integrations and deployment procedures. ## QuickBooks Online Integration The QuickBooks Online API uses OAuth 2.0 for authentication. You will need to register your application in the Intuit Developer Portal to obtain client credentials. The base URL for the API is https://quickbooks.api.intuit.com/v3/company/{realmId}. Common endpoints include /invoice, /customer, /payment, and /bill. Rate limits apply: 500 requests per minute for production apps. Always implement exponential backoff for 429 responses. ## Stripe Payment Integration Stripe provides both client-side (Stripe.js) and server-side APIs. For PCI compliance, never pass raw card numbers through your server—use Stripe Elements or the Payment Intents API. Webhooks are essential for handling asynchronous events like payment succeeded or subscription renewed. Configure your webhook endpoint to verify signatures using the Stripe-Signature header. ## ShipStation Integration The ShipStation API is REST-based. Authentication uses API key and API secret in the Authorization header. Endpoints cover orders, shipments, carriers, and warehouses. Poll for new orders or use webhooks if available for your plan. Batch operations are supported for bulk label creation. ## Twilio SMS Integration Twilio's REST API requires Account SID and Auth Token. The Messaging API endpoint is /2010-04-01/Accounts/{AccountSid}/Messages.json. For two-way messaging, configure a webhook URL to receive incoming messages. Consider using a queue for high-volume outbound SMS to avoid rate limits. # PentaCodes Technical Reference and Integration Documentation # Version 1.0 | Last Updated March 2025 # This document contains technical reference material for common integrations and deployment procedures. ## QuickBooks Online Integration The QuickBooks Online API uses OAuth 2.0 for authentication. You will need to register your application in the Intuit Developer Portal to obtain client credentials. The base URL for the API is https://quickbooks.api.intuit.com/v3/company/{realmId}. Common endpoints include /invoice, /customer, /payment, and /bill. Rate limits apply: 500 requests per minute for production apps. Always implement exponential backoff for 429 responses. ## Stripe Payment Integration Stripe provides both client-side (Stripe.js) and server-side APIs. For PCI compliance, never pass raw card numbers through your server—use Stripe Elements or the Payment Intents API. Webhooks are essential for handling asynchronous events like payment succeeded or subscription renewed. Configure your webhook endpoint to verify signatures using the Stripe-Signature header. ## ShipStation Integration The ShipStation API is REST-based. Authentication uses API key and API secret in the Authorization header. Endpoints cover orders, shipments, carriers, and warehouses. Poll for new orders or use webhooks if available for your plan. Batch operations are supported for bulk label creation. ## Twilio SMS Integration Twilio's REST API requires Account SID and Auth Token. The Messaging API endpoint is /2010-04-01/Accounts/{AccountSid}/Messages.json. For two-way messaging, configure a webhook URL to receive incoming messages. Consider using a queue for high-volume outbound SMS to avoid rate limits. # PentaCodes Technical Reference and Integration Documentation # Version 1.0 | Last Updated March 2025 # This document contains technical reference material for common integrations and deployment procedures. ## QuickBooks Online Integration The QuickBooks Online API uses OAuth 2.0 for authentication. You will need to register your application in the Intuit Developer Portal to obtain client credentials. The base URL for the API is https://quickbooks.api.intuit.com/v3/company/{realmId}. Common endpoints include /invoice, /customer, /payment, and /bill. Rate limits apply: 500 requests per minute for production apps. Always implement exponential backoff for 429 responses. ## Stripe Payment Integration Stripe provides both client-side (Stripe.js) and server-side APIs. For PCI compliance, never pass raw card numbers through your server—use Stripe Elements or the Payment Intents API. Webhooks are essential for handling asynchronous events like payment succeeded or subscription renewed. Configure your webhook endpoint to verify signatures using the Stripe-Signature header. ## ShipStation Integration The ShipStation API is REST-based. Authentication uses API key and API secret in the Authorization header. Endpoints cover orders, shipments, carriers, and warehouses. Poll for new orders or use webhooks if available for your plan. Batch operations are supported for bulk label creation. ## Twilio SMS Integration Twilio's REST API requires Account SID and Auth Token. The Messaging API endpoint is /2010-04-01/Accounts/{AccountSid}/Messages.json. For two-way messaging, configure a webhook URL to receive incoming messages. Consider using a queue for high-volume outbound SMS to avoid rate limits. # PentaCodes Technical Reference and Integration Documentation # Version 1.0 | Last Updated March 2025 # This document contains technical reference material for common integrations and deployment procedures. ## QuickBooks Online Integration The QuickBooks Online API uses OAuth 2.0 for authentication. You will need to register your application in the Intuit Developer Portal to obtain client credentials. The base URL for the API is https://quickbooks.api.intuit.com/v3/company/{realmId}. Common endpoints include /invoice, /customer, /payment, and /bill. Rate limits apply: 500 requests per minute for production apps. Always implement exponential backoff for 429 responses. ## Stripe Payment Integration Stripe provides both client-side (Stripe.js) and server-side APIs. For PCI compliance, never pass raw card numbers through your server—use Stripe Elements or the Payment Intents API. Webhooks are essential for handling asynchronous events like payment succeeded or subscription renewed. Configure your webhook endpoint to verify signatures using the Stripe-Signature header. ## ShipStation Integration The ShipStation API is REST-based. Authentication uses API key and API secret in the Authorization header. Endpoints cover orders, shipments, carriers, and warehouses. Poll for new orders or use webhooks if available for your plan. Batch operations are supported for bulk label creation. ## Twilio SMS Integration Twilio's REST API requires Account SID and Auth Token. The Messaging API endpoint is /2010-04-01/Accounts/{AccountSid}/Messages.json. For two-way messaging, configure a webhook URL to receive incoming messages. Consider using a queue for high-volume outbound SMS to avoid rate limits. # PentaCodes Technical Reference and Integration Documentation # Version 1.0 | Last Updated March 2025 # This document contains technical reference material for common integrations and deployment procedures. ## QuickBooks Online Integration The QuickBooks Online API uses OAuth 2.0 for authentication. You will need to register your application in the Intuit Developer Portal to obtain client credentials. The base URL for the API is https://quickbooks.api.intuit.com/v3/company/{realmId}. Common endpoints include /invoice, /customer, /payment, and /bill. Rate limits apply: 500 requests per minute for production apps. Always implement exponential backoff for 429 responses. ## Stripe Payment Integration Stripe provides both client-side (Stripe.js) and server-side APIs. For PCI compliance, never pass raw card numbers through your server—use Stripe Elements or the Payment Intents API. Webhooks are essential for handling asynchronous events like payment succeeded or subscription renewed. Configure your webhook endpoint to verify signatures using the Stripe-Signature header. ## ShipStation Integration The ShipStation API is REST-based. Authentication uses API key and API secret in the Authorization header. Endpoints cover orders, shipments, carriers, and warehouses. Poll for new orders or use webhooks if available for your plan. Batch operations are supported for bulk label creation. ## Twilio SMS Integration Twilio's REST API requires Account SID and Auth Token. The Messaging API endpoint is /2010-04-01/Accounts/{AccountSid}/Messages.json. For two-way messaging, configure a webhook URL to receive incoming messages. Consider using a queue for high-volume outbound SMS to avoid rate limits. # PentaCodes Technical Reference and Integration Documentation # Version 1.0 | Last Updated March 2025 # This document contains technical reference material for common integrations and deployment procedures. ## QuickBooks Online Integration The QuickBooks Online API uses OAuth 2.0 for authentication. You will need to register your application in the Intuit Developer Portal to obtain client credentials. The base URL for the API is https://quickbooks.api.intuit.com/v3/company/{realmId}. Common endpoints include /invoice, /customer, /payment, and /bill. Rate limits apply: 500 requests per minute for production apps. Always implement exponential backoff for 429 responses. ## Stripe Payment Integration Stripe provides both client-side (Stripe.js) and server-side APIs. For PCI compliance, never pass raw card numbers through your server—use Stripe Elements or the Payment Intents API. Webhooks are essential for handling asynchronous events like payment succeeded or subscription renewed. Configure your webhook endpoint to verify signatures using the Stripe-Signature header. ## ShipStation Integration The ShipStation API is REST-based. Authentication uses API key and API secret in the Authorization header. Endpoints cover orders, shipments, carriers, and warehouses. Poll for new orders or use webhooks if available for your plan. Batch operations are supported for bulk label creation. ## Twilio SMS Integration Twilio's REST API requires Account SID and Auth Token. The Messaging API endpoint is /2010-04-01/Accounts/{AccountSid}/Messages.json. For two-way messaging, configure a webhook URL to receive incoming messages. Consider using a queue for high-volume outbound SMS to avoid rate limits. # PentaCodes Technical Reference and Integration Documentation # Version 1.0 | Last Updated March 2025 # This document contains technical reference material for common integrations and deployment procedures. ## QuickBooks Online Integration The QuickBooks Online API uses OAuth 2.0 for authentication. You will need to register your application in the Intuit Developer Portal to obtain client credentials. The base URL for the API is https://quickbooks.api.intuit.com/v3/company/{realmId}. Common endpoints include /invoice, /customer, /payment, and /bill. Rate limits apply: 500 requests per minute for production apps. Always implement exponential backoff for 429 responses. ## Stripe Payment Integration Stripe provides both client-side (Stripe.js) and server-side APIs. For PCI compliance, never pass raw card numbers through your server—use Stripe Elements or the Payment Intents API. Webhooks are essential for handling asynchronous events like payment succeeded or subscription renewed. Configure your webhook endpoint to verify signatures using the Stripe-Signature header. ## ShipStation Integration The ShipStation API is REST-based. Authentication uses API key and API secret in the Authorization header. Endpoints cover orders, shipments, carriers, and warehouses. Poll for new orders or use webhooks if available for your plan. Batch operations are supported for bulk label creation. ## Twilio SMS Integration Twilio's REST API requires Account SID and Auth Token. The Messaging API endpoint is /2010-04-01/Accounts/{AccountSid}/Messages.json. For two-way messaging, configure a webhook URL to receive incoming messages. Consider using a queue for high-volume outbound SMS to avoid rate limits. # PentaCodes Technical Reference and Integration Documentation # Version 1.0 | Last Updated March 2025 # This document contains technical reference material for common integrations and deployment procedures. ## QuickBooks Online Integration The QuickBooks Online API uses OAuth 2.0 for authentication. You will need to register your application in the Intuit Developer Portal to obtain client credentials. The base URL for the API is https://quickbooks.api.intuit.com/v3/company/{realmId}. Common endpoints include /invoice, /customer, /payment, and /bill. Rate limits apply: 500 requests per minute for production apps. Always implement exponential backoff for 429 responses. ## Stripe Payment Integration Stripe provides both client-side (Stripe.js) and server-side APIs. For PCI compliance, never pass raw card numbers through your server—use Stripe Elements or the Payment Intents API. Webhooks are essential for handling asynchronous events like payment succeeded or subscription renewed. Configure your webhook endpoint to verify signatures using the Stripe-Signature header. ## ShipStation Integration The ShipStation API is REST-based. Authentication uses API key and API secret in the Authorization header. Endpoints cover orders, shipments, carriers, and warehouses. Poll for new orders or use webhooks if available for your plan. Batch operations are supported for bulk label creation. ## Twilio SMS Integration Twilio's REST API requires Account SID and Auth Token. The Messaging API endpoint is /2010-04-01/Accounts/{AccountSid}/Messages.json. For two-way messaging, configure a webhook URL to receive incoming messages. Consider using a queue for high-volume outbound SMS to avoid rate limits. # PentaCodes Technical Reference and Integration Documentation # Version 1.0 | Last Updated March 2025 # This document contains technical reference material for common integrations and deployment procedures. ## QuickBooks Online Integration The QuickBooks Online API uses OAuth 2.0 for authentication. You will need to register your application in the Intuit Developer Portal to obtain client credentials. The base URL for the API is https://quickbooks.api.intuit.com/v3/company/{realmId}. Common endpoints include /invoice, /customer, /payment, and /bill. Rate limits apply: 500 requests per minute for production apps. Always implement exponential backoff for 429 responses. ## Stripe Payment Integration Stripe provides both client-side (Stripe.js) and server-side APIs. For PCI compliance, never pass raw card numbers through your server—use Stripe Elements or the Payment Intents API. Webhooks are essential for handling asynchronous events like payment succeeded or subscription renewed. Configure your webhook endpoint to verify signatures using the Stripe-Signature header. ## ShipStation Integration The ShipStation API is REST-based. Authentication uses API key and API secret in the Authorization header. Endpoints cover orders, shipments, carriers, and warehouses. Poll for new orders or use webhooks if available for your plan. Batch operations are supported for bulk label creation. ## Twilio SMS Integration Twilio's REST API requires Account SID and Auth Token. The Messaging API endpoint is /2010-04-01/Accounts/{AccountSid}/Messages.json. For two-way messaging, configure a webhook URL to receive incoming messages. Consider using a queue for high-volume outbound SMS to avoid rate limits. # PentaCodes Technical Reference and Integration Documentation # Version 1.0 | Last Updated March 2025 # This document contains technical reference material for common integrations and deployment procedures. ## QuickBooks Online Integration The QuickBooks Online API uses OAuth 2.0 for authentication. You will need to register your application in the Intuit Developer Portal to obtain client credentials. The base URL for the API is https://quickbooks.api.intuit.com/v3/company/{realmId}. Common endpoints include /invoice, /customer, /payment, and /bill. Rate limits apply: 500 requests per minute for production apps. Always implement exponential backoff for 429 responses. ## Stripe Payment Integration Stripe provides both client-side (Stripe.js) and server-side APIs. For PCI compliance, never pass raw card numbers through your server—use Stripe Elements or the Payment Intents API. Webhooks are essential for handling asynchronous events like payment succeeded or subscription renewed. Configure your webhook endpoint to verify signatures using the Stripe-Signature header. ## ShipStation Integration The ShipStation API is REST-based. Authentication uses API key and API secret in the Authorization header. Endpoints cover orders, shipments, carriers, and warehouses. Poll for new orders or use webhooks if available for your plan. Batch operations are supported for bulk label creation. ## Twilio SMS Integration Twilio's REST API requires Account SID and Auth Token. The Messaging API endpoint is /2010-04-01/Accounts/{AccountSid}/Messages.json. For two-way messaging, configure a webhook URL to receive incoming messages. Consider using a queue for high-volume outbound SMS to avoid rate limits. # PentaCodes Technical Reference and Integration Documentation # Version 1.0 | Last Updated March 2025 # This document contains technical reference material for common integrations and deployment procedures. ## QuickBooks Online Integration The QuickBooks Online API uses OAuth 2.0 for authentication. You will need to register your application in the Intuit Developer Portal to obtain client credentials. The base URL for the API is https://quickbooks.api.intuit.com/v3/company/{realmId}. Common endpoints include /invoice, /customer, /payment, and /bill. Rate limits apply: 500 requests per minute for production apps. Always implement exponential backoff for 429 responses. ## Stripe Payment Integration Stripe provides both client-side (Stripe.js) and server-side APIs. For PCI compliance, never pass raw card numbers through your server—use Stripe Elements or the Payment Intents API. Webhooks are essential for handling asynchronous events like payment succeeded or subscription renewed. Configure your webhook endpoint to verify signatures using the Stripe-Signature header. ## ShipStation Integration The ShipStation API is REST-based. Authentication uses API key and API secret in the Authorization header. Endpoints cover orders, shipments, carriers, and warehouses. Poll for new orders or use webhooks if available for your plan. Batch operations are supported for bulk label creation. ## Twilio SMS Integration Twilio's REST API requires Account SID and Auth Token. The Messaging API endpoint is /2010-04-01/Accounts/{AccountSid}/Messages.json. For two-way messaging, configure a webhook URL to receive incoming messages. Consider using a queue for high-volume outbound SMS to avoid rate limits. # PentaCodes Technical Reference and Integration Documentation # Version 1.0 | Last Updated March 2025 # This document contains technical reference material for common integrations and deployment procedures. ## QuickBooks Online Integration The QuickBooks Online API uses OAuth 2.0 for authentication. You will need to register your application in the Intuit Developer Portal to obtain client credentials. The base URL for the API is https://quickbooks.api.intuit.com/v3/company/{realmId}. Common endpoints include /invoice, /customer, /payment, and /bill. Rate limits apply: 500 requests per minute for production apps. Always implement exponential backoff for 429 responses. ## Stripe Payment Integration Stripe provides both client-side (Stripe.js) and server-side APIs. For PCI compliance, never pass raw card numbers through your server—use Stripe Elements or the Payment Intents API. Webhooks are essential for handling asynchronous events like payment succeeded or subscription renewed. Configure your webhook endpoint to verify signatures using the Stripe-Signature header. ## ShipStation Integration The ShipStation API is REST-based. Authentication uses API key and API secret in the Authorization header. Endpoints cover orders, shipments, carriers, and warehouses. Poll for new orders or use webhooks if available for your plan. Batch operations are supported for bulk label creation. ## Twilio SMS Integration Twilio's REST API requires Account SID and Auth Token. The Messaging API endpoint is /2010-04-01/Accounts/{AccountSid}/Messages.json. For two-way messaging, configure a webhook URL to receive incoming messages. Consider using a queue for high-volume outbound SMS to avoid rate limits. # PentaCodes Technical Reference and Integration Documentation # Version 1.0 | Last Updated March 2025 # This document contains technical reference material for common integrations and deployment procedures. ## QuickBooks Online Integration The QuickBooks Online API uses OAuth 2.0 for authentication. You will need to register your application in the Intuit Developer Portal to obtain client credentials. The base URL for the API is https://quickbooks.api.intuit.com/v3/company/{realmId}. Common endpoints include /invoice, /customer, /payment, and /bill. Rate limits apply: 500 requests per minute for production apps. Always implement exponential backoff for 429 responses. ## Stripe Payment Integration Stripe provides both client-side (Stripe.js) and server-side APIs. For PCI compliance, never pass raw card numbers through your server—use Stripe Elements or the Payment Intents API. Webhooks are essential for handling asynchronous events like payment succeeded or subscription renewed. Configure your webhook endpoint to verify signatures using the Stripe-Signature header. ## ShipStation Integration The ShipStation API is REST-based. Authentication uses API key and API secret in the Authorization header. Endpoints cover orders, shipments, carriers, and warehouses. Poll for new orders or use webhooks if available for your plan. Batch operations are supported for bulk label creation. ## Twilio SMS Integration Twilio's REST API requires Account SID and Auth Token. The Messaging API endpoint is /2010-04-01/Accounts/{AccountSid}/Messages.json. For two-way messaging, configure a webhook URL to receive incoming messages. Consider using a queue for high-volume outbound SMS to avoid rate limits. # PentaCodes Technical Reference and Integration Documentation # Version 1.0 | Last Updated March 2025 # This document contains technical reference material for common integrations and deployment procedures. ## QuickBooks Online Integration The QuickBooks Online API uses OAuth 2.0 for authentication. You will need to register your application in the Intuit Developer Portal to obtain client credentials. The base URL for the API is https://quickbooks.api.intuit.com/v3/company/{realmId}. Common endpoints include /invoice, /customer, /payment, and /bill. Rate limits apply: 500 requests per minute for production apps. Always implement exponential backoff for 429 responses. ## Stripe Payment Integration Stripe provides both client-side (Stripe.js) and server-side APIs. For PCI compliance, never pass raw card numbers through your server—use Stripe Elements or the Payment Intents API. Webhooks are essential for handling asynchronous events like payment succeeded or subscription renewed. Configure your webhook endpoint to verify signatures using the Stripe-Signature header. ## ShipStation Integration The ShipStation API is REST-based. Authentication uses API key and API secret in the Authorization header. Endpoints cover orders, shipments, carriers, and warehouses. Poll for new orders or use webhooks if available for your plan. Batch operations are supported for bulk label creation. ## Twilio SMS Integration Twilio's REST API requires Account SID and Auth Token. The Messaging API endpoint is /2010-04-01/Accounts/{AccountSid}/Messages.json. For two-way messaging, configure a webhook URL to receive incoming messages. Consider using a queue for high-volume outbound SMS to avoid rate limits. # PentaCodes Technical Reference and Integration Documentation # Version 1.0 | Last Updated March 2025 # This document contains technical reference material for common integrations and deployment procedures. ## QuickBooks Online Integration The QuickBooks Online API uses OAuth 2.0 for authentication. You will need to register your application in the Intuit Developer Portal to obtain client credentials. The base URL for the API is https://quickbooks.api.intuit.com/v3/company/{realmId}. Common endpoints include /invoice, /customer, /payment, and /bill. Rate limits apply: 500 requests per minute for production apps. Always implement exponential backoff for 429 responses. ## Stripe Payment Integration Stripe provides both client-side (Stripe.js) and server-side APIs. For PCI compliance, never pass raw card numbers through your server—use Stripe Elements or the Payment Intents API. Webhooks are essential for handling asynchronous events like payment succeeded or subscription renewed. Configure your webhook endpoint to verify signatures using the Stripe-Signature header. ## ShipStation Integration The ShipStation API is REST-based. Authentication uses API key and API secret in the Authorization header. Endpoints cover orders, shipments, carriers, and warehouses. Poll for new orders or use webhooks if available for your plan. Batch operations are supported for bulk label creation. ## Twilio SMS Integration Twilio's REST API requires Account SID and Auth Token. The Messaging API endpoint is /2010-04-01/Accounts/{AccountSid}/Messages.json. For two-way messaging, configure a webhook URL to receive incoming messages. Consider using a queue for high-volume outbound SMS to avoid rate limits. # PentaCodes Technical Reference and Integration Documentation # Version 1.0 | Last Updated March 2025 # This document contains technical reference material for common integrations and deployment procedures. ## QuickBooks Online Integration The QuickBooks Online API uses OAuth 2.0 for authentication. You will need to register your application in the Intuit Developer Portal to obtain client credentials. The base URL for the API is https://quickbooks.api.intuit.com/v3/company/{realmId}. Common endpoints include /invoice, /customer, /payment, and /bill. Rate limits apply: 500 requests per minute for production apps. Always implement exponential backoff for 429 responses. ## Stripe Payment Integration Stripe provides both client-side (Stripe.js) and server-side APIs. For PCI compliance, never pass raw card numbers through your server—use Stripe Elements or the Payment Intents API. Webhooks are essential for handling asynchronous events like payment succeeded or subscription renewed. Configure your webhook endpoint to verify signatures using the Stripe-Signature header. ## ShipStation Integration The ShipStation API is REST-based. Authentication uses API key and API secret in the Authorization header. Endpoints cover orders, shipments, carriers, and warehouses. Poll for new orders or use webhooks if available for your plan. Batch operations are supported for bulk label creation. ## Twilio SMS Integration Twilio's REST API requires Account SID and Auth Token. The Messaging API endpoint is /2010-04-01/Accounts/{AccountSid}/Messages.json. For two-way messaging, configure a webhook URL to receive incoming messages. Consider using a queue for high-volume outbound SMS to avoid rate limits. # PentaCodes Technical Reference and Integration Documentation # Version 1.0 | Last Updated March 2025 # This document contains technical reference material for common integrations and deployment procedures. ## QuickBooks Online Integration The QuickBooks Online API uses OAuth 2.0 for authentication. You will need to register your application in the Intuit Developer Portal to obtain client credentials. The base URL for the API is https://quickbooks.api.intuit.com/v3/company/{realmId}. Common endpoints include /invoice, /customer, /payment, and /bill. Rate limits apply: 500 requests per minute for production apps. Always implement exponential backoff for 429 responses. ## Stripe Payment Integration Stripe provides both client-side (Stripe.js) and server-side APIs. For PCI compliance, never pass raw card numbers through your server—use Stripe Elements or the Payment Intents API. Webhooks are essential for handling asynchronous events like payment succeeded or subscription renewed. Configure your webhook endpoint to verify signatures using the Stripe-Signature header. ## ShipStation Integration The ShipStation API is REST-based. Authentication uses API key and API secret in the Authorization header. Endpoints cover orders, shipments, carriers, and warehouses. Poll for new orders or use webhooks if available for your plan. Batch operations are supported for bulk label creation. ## Twilio SMS Integration Twilio's REST API requires Account SID and Auth Token. The Messaging API endpoint is /2010-04-01/Accounts/{AccountSid}/Messages.json. For two-way messaging, configure a webhook URL to receive incoming messages. Consider using a queue for high-volume outbound SMS to avoid rate limits. # PentaCodes Technical Reference and Integration Documentation # Version 1.0 | Last Updated March 2025 # This document contains technical reference material for common integrations and deployment procedures. ## QuickBooks Online Integration The QuickBooks Online API uses OAuth 2.0 for authentication. You will need to register your application in the Intuit Developer Portal to obtain client credentials. The base URL for the API is https://quickbooks.api.intuit.com/v3/company/{realmId}. Common endpoints include /invoice, /customer, /payment, and /bill. Rate limits apply: 500 requests per minute for production apps. Always implement exponential backoff for 429 responses. ## Stripe Payment Integration Stripe provides both client-side (Stripe.js) and server-side APIs. For PCI compliance, never pass raw card numbers through your server—use Stripe Elements or the Payment Intents API. Webhooks are essential for handling asynchronous events like payment succeeded or subscription renewed. Configure your webhook endpoint to verify signatures using the Stripe-Signature header. ## ShipStation Integration The ShipStation API is REST-based. Authentication uses API key and API secret in the Authorization header. Endpoints cover orders, shipments, carriers, and warehouses. Poll for new orders or use webhooks if available for your plan. Batch operations are supported for bulk label creation. ## Twilio SMS Integration Twilio's REST API requires Account SID and Auth Token. The Messaging API endpoint is /2010-04-01/Accounts/{AccountSid}/Messages.json. For two-way messaging, configure a webhook URL to receive incoming messages. Consider using a queue for high-volume outbound SMS to avoid rate limits. # PentaCodes Technical Reference and Integration Documentation # Version 1.0 | Last Updated March 2025 # This document contains technical reference material for common integrations and deployment procedures. ## QuickBooks Online Integration The QuickBooks Online API uses OAuth 2.0 for authentication. You will need to register your application in the Intuit Developer Portal to obtain client credentials. The base URL for the API is https://quickbooks.api.intuit.com/v3/company/{realmId}. Common endpoints include /invoice, /customer, /payment, and /bill. Rate limits apply: 500 requests per minute for production apps. Always implement exponential backoff for 429 responses. ## Stripe Payment Integration Stripe provides both client-side (Stripe.js) and server-side APIs. For PCI compliance, never pass raw card numbers through your server—use Stripe Elements or the Payment Intents API. Webhooks are essential for handling asynchronous events like payment succeeded or subscription renewed. Configure your webhook endpoint to verify signatures using the Stripe-Signature header. ## ShipStation Integration The ShipStation API is REST-based. Authentication uses API key and API secret in the Authorization header. Endpoints cover orders, shipments, carriers, and warehouses. Poll for new orders or use webhooks if available for your plan. Batch operations are supported for bulk label creation. ## Twilio SMS Integration Twilio's REST API requires Account SID and Auth Token. The Messaging API endpoint is /2010-04-01/Accounts/{AccountSid}/Messages.json. For two-way messaging, configure a webhook URL to receive incoming messages. Consider using a queue for high-volume outbound SMS to avoid rate limits. # PentaCodes Technical Reference and Integration Documentation # Version 1.0 | Last Updated March 2025 # This document contains technical reference material for common integrations and deployment procedures. ## QuickBooks Online Integration The QuickBooks Online API uses OAuth 2.0 for authentication. You will need to register your application in the Intuit Developer Portal to obtain client credentials. The base URL for the API is https://quickbooks.api.intuit.com/v3/company/{realmId}. Common endpoints include /invoice, /customer, /payment, and /bill. Rate limits apply: 500 requests per minute for production apps. Always implement exponential backoff for 429 responses. ## Stripe Payment Integration Stripe provides both client-side (Stripe.js) and server-side APIs. For PCI compliance, never pass raw card numbers through your server—use Stripe Elements or the Payment Intents API. Webhooks are essential for handling asynchronous events like payment succeeded or subscription renewed. Configure your webhook endpoint to verify signatures using the Stripe-Signature header. ## ShipStation Integration The ShipStation API is REST-based. Authentication uses API key and API secret in the Authorization header. Endpoints cover orders, shipments, carriers, and warehouses. Poll for new orders or use webhooks if available for your plan. Batch operations are supported for bulk label creation. ## Twilio SMS Integration Twilio's REST API requires Account SID and Auth Token. The Messaging API endpoint is /2010-04-01/Accounts/{AccountSid}/Messages.json. For two-way messaging, configure a webhook URL to receive incoming messages. Consider using a queue for high-volume outbound SMS to avoid rate limits. # PentaCodes Technical Reference and Integration Documentation # Version 1.0 | Last Updated March 2025 # This document contains technical reference material for common integrations and deployment procedures. ## QuickBooks Online Integration The QuickBooks Online API uses OAuth 2.0 for authentication. You will need to register your application in the Intuit Developer Portal to obtain client credentials. The base URL for the API is https://quickbooks.api.intuit.com/v3/company/{realmId}. Common endpoints include /invoice, /customer, /payment, and /bill. Rate limits apply: 500 requests per minute for production apps. Always implement exponential backoff for 429 responses. ## Stripe Payment Integration Stripe provides both client-side (Stripe.js) and server-side APIs. For PCI compliance, never pass raw card numbers through your server—use Stripe Elements or the Payment Intents API. Webhooks are essential for handling asynchronous events like payment succeeded or subscription renewed. Configure your webhook endpoint to verify signatures using the Stripe-Signature header. ## ShipStation Integration The ShipStation API is REST-based. Authentication uses API key and API secret in the Authorization header. Endpoints cover orders, shipments, carriers, and warehouses. Poll for new orders or use webhooks if available for your plan. Batch operations are supported for bulk label creation. ## Twilio SMS Integration Twilio's REST API requires Account SID and Auth Token. The Messaging API endpoint is /2010-04-01/Accounts/{AccountSid}/Messages.json. For two-way messaging, configure a webhook URL to receive incoming messages. Consider using a queue for high-volume outbound SMS to avoid rate limits. # PentaCodes Technical Reference and Integration Documentation # Version 1.0 | Last Updated March 2025 # This document contains technical reference material for common integrations and deployment procedures. ## QuickBooks Online Integration The QuickBooks Online API uses OAuth 2.0 for authentication. You will need to register your application in the Intuit Developer Portal to obtain client credentials. The base URL for the API is https://quickbooks.api.intuit.com/v3/company/{realmId}. Common endpoints include /invoice, /customer, /payment, and /bill. Rate limits apply: 500 requests per minute for production apps. Always implement exponential backoff for 429 responses. ## Stripe Payment Integration Stripe provides both client-side (Stripe.js) and server-side APIs. For PCI compliance, never pass raw card numbers through your server—use Stripe Elements or the Payment Intents API. Webhooks are essential for handling asynchronous events like payment succeeded or subscription renewed. Configure your webhook endpoint to verify signatures using the Stripe-Signature header. ## ShipStation Integration The ShipStation API is REST-based. Authentication uses API key and API secret in the Authorization header. Endpoints cover orders, shipments, carriers, and warehouses. Poll for new orders or use webhooks if available for your plan. Batch operations are supported for bulk label creation. ## Twilio SMS Integration Twilio's REST API requires Account SID and Auth Token. The Messaging API endpoint is /2010-04-01/Accounts/{AccountSid}/Messages.json. For two-way messaging, configure a webhook URL to receive incoming messages. Consider using a queue for high-volume outbound SMS to avoid rate limits. # PentaCodes Technical Reference and Integration Documentation # Version 1.0 | Last Updated March 2025 # This document contains technical reference material for common integrations and deployment procedures. ## QuickBooks Online Integration The QuickBooks Online API uses OAuth 2.0 for authentication. You will need to register your application in the Intuit Developer Portal to obtain client credentials. The base URL for the API is https://quickbooks.api.intuit.com/v3/company/{realmId}. Common endpoints include /invoice, /customer, /payment, and /bill. Rate limits apply: 500 requests per minute for production apps. Always implement exponential backoff for 429 responses. ## Stripe Payment Integration Stripe provides both client-side (Stripe.js) and server-side APIs. For PCI compliance, never pass raw card numbers through your server—use Stripe Elements or the Payment Intents API. Webhooks are essential for handling asynchronous events like payment succeeded or subscription renewed. Configure your webhook endpoint to verify signatures using the Stripe-Signature header. ## ShipStation Integration The ShipStation API is REST-based. Authentication uses API key and API secret in the Authorization header. Endpoints cover orders, shipments, carriers, and warehouses. Poll for new orders or use webhooks if available for your plan. Batch operations are supported for bulk label creation. ## Twilio SMS Integration Twilio's REST API requires Account SID and Auth Token. The Messaging API endpoint is /2010-04-01/Accounts/{AccountSid}/Messages.json. For two-way messaging, configure a webhook URL to receive incoming messages. Consider using a queue for high-volume outbound SMS to avoid rate limits. # PentaCodes Technical Reference and Integration Documentation # Version 1.0 | Last Updated March 2025 # This document contains technical reference material for common integrations and deployment procedures. ## QuickBooks Online Integration The QuickBooks Online API uses OAuth 2.0 for authentication. You will need to register your application in the Intuit Developer Portal to obtain client credentials. The base URL for the API is https://quickbooks.api.intuit.com/v3/company/{realmId}. Common endpoints include /invoice, /customer, /payment, and /bill. Rate limits apply: 500 requests per minute for production apps. Always implement exponential backoff for 429 responses. ## Stripe Payment Integration Stripe provides both client-side (Stripe.js) and server-side APIs. For PCI compliance, never pass raw card numbers through your server—use Stripe Elements or the Payment Intents API. Webhooks are essential for handling asynchronous events like payment succeeded or subscription renewed. Configure your webhook endpoint to verify signatures using the Stripe-Signature header. ## ShipStation Integration The ShipStation API is REST-based. Authentication uses API key and API secret in the Authorization header. Endpoints cover orders, shipments, carriers, and warehouses. Poll for new orders or use webhooks if available for your plan. Batch operations are supported for bulk label creation. ## Twilio SMS Integration Twilio's REST API requires Account SID and Auth Token. The Messaging API endpoint is /2010-04-01/Accounts/{AccountSid}/Messages.json. For two-way messaging, configure a webhook URL to receive incoming messages. Consider using a queue for high-volume outbound SMS to avoid rate limits. # PentaCodes Technical Reference and Integration Documentation # Version 1.0 | Last Updated March 2025 # This document contains technical reference material for common integrations and deployment procedures. ## QuickBooks Online Integration The QuickBooks Online API uses OAuth 2.0 for authentication. You will need to register your application in the Intuit Developer Portal to obtain client credentials. The base URL for the API is https://quickbooks.api.intuit.com/v3/company/{realmId}. Common endpoints include /invoice, /customer, /payment, and /bill. Rate limits apply: 500 requests per minute for production apps. Always implement exponential backoff for 429 responses. ## Stripe Payment Integration Stripe provides both client-side (Stripe.js) and server-side APIs. For PCI compliance, never pass raw card numbers through your server—use Stripe Elements or the Payment Intents API. Webhooks are essential for handling asynchronous events like payment succeeded or subscription renewed. Configure your webhook endpoint to verify signatures using the Stripe-Signature header. ## ShipStation Integration The ShipStation API is REST-based. Authentication uses API key and API secret in the Authorization header. Endpoints cover orders, shipments, carriers, and warehouses. Poll for new orders or use webhooks if available for your plan. Batch operations are supported for bulk label creation. ## Twilio SMS Integration Twilio's REST API requires Account SID and Auth Token. The Messaging API endpoint is /2010-04-01/Accounts/{AccountSid}/Messages.json. For two-way messaging, configure a webhook URL to receive incoming messages. Consider using a queue for high-volume outbound SMS to avoid rate limits. # PentaCodes Technical Reference and Integration Documentation # Version 1.0 | Last Updated March 2025 # This document contains technical reference material for common integrations and deployment procedures. ## QuickBooks Online Integration The QuickBooks Online API uses OAuth 2.0 for authentication. You will need to register your application in the Intuit Developer Portal to obtain client credentials. The base URL for the API is https://quickbooks.api.intuit.com/v3/company/{realmId}. Common endpoints include /invoice, /customer, /payment, and /bill. Rate limits apply: 500 requests per minute for production apps. Always implement exponential backoff for 429 responses. ## Stripe Payment Integration Stripe provides both client-side (Stripe.js) and server-side APIs. For PCI compliance, never pass raw card numbers through your server—use Stripe Elements or the Payment Intents API. Webhooks are essential for handling asynchronous events like payment succeeded or subscription renewed. Configure your webhook endpoint to verify signatures using the Stripe-Signature header. ## ShipStation Integration The ShipStation API is REST-based. Authentication uses API key and API secret in the Authorization header. Endpoints cover orders, shipments, carriers, and warehouses. Poll for new orders or use webhooks if available for your plan. Batch operations are supported for bulk label creation. ## Twilio SMS Integration Twilio's REST API requires Account SID and Auth Token. The Messaging API endpoint is /2010-04-01/Accounts/{AccountSid}/Messages.json. For two-way messaging, configure a webhook URL to receive incoming messages. Consider using a queue for high-volume outbound SMS to avoid rate limits. # PentaCodes Technical Reference and Integration Documentation # Version 1.0 | Last Updated March 2025 # This document contains technical reference material for common integrations and deployment procedures. ## QuickBooks Online Integration The QuickBooks Online API uses OAuth 2.0 for authentication. You will need to register your application in the Intuit Developer Portal to obtain client credentials. The base URL for the API is https://quickbooks.api.intuit.com/v3/company/{realmId}. Common endpoints include /invoice, /customer, /payment, and /bill. Rate limits apply: 500 requests per minute for production apps. Always implement exponential backoff for 429 responses. ## Stripe Payment Integration Stripe provides both client-side (Stripe.js) and server-side APIs. For PCI compliance, never pass raw card numbers through your server—use Stripe Elements or the Payment Intents API. Webhooks are essential for handling asynchronous events like payment succeeded or subscription renewed. Configure your webhook endpoint to verify signatures using the Stripe-Signature header. ## ShipStation Integration The ShipStation API is REST-based. Authentication uses API key and API secret in the Authorization header. Endpoints cover orders, shipments, carriers, and warehouses. Poll for new orders or use webhooks if available for your plan. Batch operations are supported for bulk label creation. ## Twilio SMS Integration Twilio's REST API requires Account SID and Auth Token. The Messaging API endpoint is /2010-04-01/Accounts/{AccountSid}/Messages.json. For two-way messaging, configure a webhook URL to receive incoming messages. Consider using a queue for high-volume outbound SMS to avoid rate limits. # PentaCodes Technical Reference and Integration Documentation # Version 1.0 | Last Updated March 2025 # This document contains technical reference material for common integrations and deployment procedures. ## QuickBooks Online Integration The QuickBooks Online API uses OAuth 2.0 for authentication. You will need to register your application in the Intuit Developer Portal to obtain client credentials. The base URL for the API is https://quickbooks.api.intuit.com/v3/company/{realmId}. Common endpoints include /invoice, /customer, /payment, and /bill. Rate limits apply: 500 requests per minute for production apps. Always implement exponential backoff for 429 responses. ## Stripe Payment Integration Stripe provides both client-side (Stripe.js) and server-side APIs. For PCI compliance, never pass raw card numbers through your server—use Stripe Elements or the Payment Intents API. Webhooks are essential for handling asynchronous events like payment succeeded or subscription renewed. Configure your webhook endpoint to verify signatures using the Stripe-Signature header. ## ShipStation Integration The ShipStation API is REST-based. Authentication uses API key and API secret in the Authorization header. Endpoints cover orders, shipments, carriers, and warehouses. Poll for new orders or use webhooks if available for your plan. Batch operations are supported for bulk label creation. ## Twilio SMS Integration Twilio's REST API requires Account SID and Auth Token. The Messaging API endpoint is /2010-04-01/Accounts/{AccountSid}/Messages.json. For two-way messaging, configure a webhook URL to receive incoming messages. Consider using a queue for high-volume outbound SMS to avoid rate limits. # PentaCodes Technical Reference and Integration Documentation # Version 1.0 | Last Updated March 2025 # This document contains technical reference material for common integrations and deployment procedures. ## QuickBooks Online Integration The QuickBooks Online API uses OAuth 2.0 for authentication. You will need to register your application in the Intuit Developer Portal to obtain client credentials. The base URL for the API is https://quickbooks.api.intuit.com/v3/company/{realmId}. Common endpoints include /invoice, /customer, /payment, and /bill. Rate limits apply: 500 requests per minute for production apps. Always implement exponential backoff for 429 responses. ## Stripe Payment Integration Stripe provides both client-side (Stripe.js) and server-side APIs. For PCI compliance, never pass raw card numbers through your server—use Stripe Elements or the Payment Intents API. Webhooks are essential for handling asynchronous events like payment succeeded or subscription renewed. Configure your webhook endpoint to verify signatures using the Stripe-Signature header. ## ShipStation Integration The ShipStation API is REST-based. Authentication uses API key and API secret in the Authorization header. Endpoints cover orders, shipments, carriers, and warehouses. Poll for new orders or use webhooks if available for your plan. Batch operations are supported for bulk label creation. ## Twilio SMS Integration Twilio's REST API requires Account SID and Auth Token. The Messaging API endpoint is /2010-04-01/Accounts/{AccountSid}/Messages.json. For two-way messaging, configure a webhook URL to receive incoming messages. Consider using a queue for high-volume outbound SMS to avoid rate limits. # PentaCodes Technical Reference and Integration Documentation # Version 1.0 | Last Updated March 2025 # This document contains technical reference material for common integrations and deployment procedures. ## QuickBooks Online Integration The QuickBooks Online API uses OAuth 2.0 for authentication. You will need to register your application in the Intuit Developer Portal to obtain client credentials. The base URL for the API is https://quickbooks.api.intuit.com/v3/company/{realmId}. Common endpoints include /invoice, /customer, /payment, and /bill. Rate limits apply: 500 requests per minute for production apps. Always implement exponential backoff for 429 responses. ## Stripe Payment Integration Stripe provides both client-side (Stripe.js) and server-side APIs. For PCI compliance, never pass raw card numbers through your server—use Stripe Elements or the Payment Intents API. Webhooks are essential for handling asynchronous events like payment succeeded or subscription renewed. Configure your webhook endpoint to verify signatures using the Stripe-Signature header. ## ShipStation Integration The ShipStation API is REST-based. Authentication uses API key and API secret in the Authorization header. Endpoints cover orders, shipments, carriers, and warehouses. Poll for new orders or use webhooks if available for your plan. Batch operations are supported for bulk label creation. ## Twilio SMS Integration Twilio's REST API requires Account SID and Auth Token. The Messaging API endpoint is /2010-04-01/Accounts/{AccountSid}/Messages.json. For two-way messaging, configure a webhook URL to receive incoming messages. Consider using a queue for high-volume outbound SMS to avoid rate limits. # PentaCodes Technical Reference and Integration Documentation # Version 1.0 | Last Updated March 2025 # This document contains technical reference material for common integrations and deployment procedures. ## QuickBooks Online Integration The QuickBooks Online API uses OAuth 2.0 for authentication. You will need to register your application in the Intuit Developer Portal to obtain client credentials. The base URL for the API is https://quickbooks.api.intuit.com/v3/company/{realmId}. Common endpoints include /invoice, /customer, /payment, and /bill. Rate limits apply: 500 requests per minute for production apps. Always implement exponential backoff for 429 responses. ## Stripe Payment Integration Stripe provides both client-side (Stripe.js) and server-side APIs. For PCI compliance, never pass raw card numbers through your server—use Stripe Elements or the Payment Intents API. Webhooks are essential for handling asynchronous events like payment succeeded or subscription renewed. Configure your webhook endpoint to verify signatures using the Stripe-Signature header. ## ShipStation Integration The ShipStation API is REST-based. Authentication uses API key and API secret in the Authorization header. Endpoints cover orders, shipments, carriers, and warehouses. Poll for new orders or use webhooks if available for your plan. Batch operations are supported for bulk label creation. ## Twilio SMS Integration Twilio's REST API requires Account SID and Auth Token. The Messaging API endpoint is /2010-04-01/Accounts/{AccountSid}/Messages.json. For two-way messaging, configure a webhook URL to receive incoming messages. Consider using a queue for high-volume outbound SMS to avoid rate limits. # PentaCodes Technical Reference and Integration Documentation # Version 1.0 | Last Updated March 2025 # This document contains technical reference material for common integrations and deployment procedures. ## QuickBooks Online Integration The QuickBooks Online API uses OAuth 2.0 for authentication. You will need to register your application in the Intuit Developer Portal to obtain client credentials. The base URL for the API is https://quickbooks.api.intuit.com/v3/company/{realmId}. Common endpoints include /invoice, /customer, /payment, and /bill. Rate limits apply: 500 requests per minute for production apps. Always implement exponential backoff for 429 responses. ## Stripe Payment Integration Stripe provides both client-side (Stripe.js) and server-side APIs. For PCI compliance, never pass raw card numbers through your server—use Stripe Elements or the Payment Intents API. Webhooks are essential for handling asynchronous events like payment succeeded or subscription renewed. Configure your webhook endpoint to verify signatures using the Stripe-Signature header. ## ShipStation Integration The ShipStation API is REST-based. Authentication uses API key and API secret in the Authorization header. Endpoints cover orders, shipments, carriers, and warehouses. Poll for new orders or use webhooks if available for your plan. Batch operations are supported for bulk label creation. ## Twilio SMS Integration Twilio's REST API requires Account SID and Auth Token. The Messaging API endpoint is /2010-04-01/Accounts/{AccountSid}/Messages.json. For two-way messaging, configure a webhook URL to receive incoming messages. Consider using a queue for high-volume outbound SMS to avoid rate limits. # PentaCodes Technical Reference and Integration Documentation # Version 1.0 | Last Updated March 2025 # This document contains technical reference material for common integrations and deployment procedures. ## QuickBooks Online Integration The QuickBooks Online API uses OAuth 2.0 for authentication. You will need to register your application in the Intuit Developer Portal to obtain client credentials. The base URL for the API is https://quickbooks.api.intuit.com/v3/company/{realmId}. Common endpoints include /invoice, /customer, /payment, and /bill. Rate limits apply: 500 requests per minute for production apps. Always implement exponential backoff for 429 responses. ## Stripe Payment Integration Stripe provides both client-side (Stripe.js) and server-side APIs. For PCI compliance, never pass raw card numbers through your server—use Stripe Elements or the Payment Intents API. Webhooks are essential for handling asynchronous events like payment succeeded or subscription renewed. Configure your webhook endpoint to verify signatures using the Stripe-Signature header. ## ShipStation Integration The ShipStation API is REST-based. Authentication uses API key and API secret in the Authorization header. Endpoints cover orders, shipments, carriers, and warehouses. Poll for new orders or use webhooks if available for your plan. Batch operations are supported for bulk label creation. ## Twilio SMS Integration Twilio's REST API requires Account SID and Auth Token. The Messaging API endpoint is /2010-04-01/Accounts/{AccountSid}/Messages.json. For two-way messaging, configure a webhook URL to receive incoming messages. Consider using a queue for high-volume outbound SMS to avoid rate limits. # PentaCodes Technical Reference and Integration Documentation # Version 1.0 | Last Updated March 2025 # This document contains technical reference material for common integrations and deployment procedures. ## QuickBooks Online Integration The QuickBooks Online API uses OAuth 2.0 for authentication. You will need to register your application in the Intuit Developer Portal to obtain client credentials. The base URL for the API is https://quickbooks.api.intuit.com/v3/company/{realmId}. Common endpoints include /invoice, /customer, /payment, and /bill. Rate limits apply: 500 requests per minute for production apps. Always implement exponential backoff for 429 responses. ## Stripe Payment Integration Stripe provides both client-side (Stripe.js) and server-side APIs. For PCI compliance, never pass raw card numbers through your server—use Stripe Elements or the Payment Intents API. Webhooks are essential for handling asynchronous events like payment succeeded or subscription renewed. Configure your webhook endpoint to verify signatures using the Stripe-Signature header. ## ShipStation Integration The ShipStation API is REST-based. Authentication uses API key and API secret in the Authorization header. Endpoints cover orders, shipments, carriers, and warehouses. Poll for new orders or use webhooks if available for your plan. Batch operations are supported for bulk label creation. ## Twilio SMS Integration Twilio's REST API requires Account SID and Auth Token. The Messaging API endpoint is /2010-04-01/Accounts/{AccountSid}/Messages.json. For two-way messaging, configure a webhook URL to receive incoming messages. Consider using a queue for high-volume outbound SMS to avoid rate limits. # PentaCodes Technical Reference and Integration Documentation # Version 1.0 | Last Updated March 2025 # This document contains technical reference material for common integrations and deployment procedures. ## QuickBooks Online Integration The QuickBooks Online API uses OAuth 2.0 for authentication. You will need to register your application in the Intuit Developer Portal to obtain client credentials. The base URL for the API is https://quickbooks.api.intuit.com/v3/company/{realmId}. Common endpoints include /invoice, /customer, /payment, and /bill. Rate limits apply: 500 requests per minute for production apps. Always implement exponential backoff for 429 responses. ## Stripe Payment Integration Stripe provides both client-side (Stripe.js) and server-side APIs. For PCI compliance, never pass raw card numbers through your server—use Stripe Elements or the Payment Intents API. Webhooks are essential for handling asynchronous events like payment succeeded or subscription renewed. Configure your webhook endpoint to verify signatures using the Stripe-Signature header. ## ShipStation Integration The ShipStation API is REST-based. Authentication uses API key and API secret in the Authorization header. Endpoints cover orders, shipments, carriers, and warehouses. Poll for new orders or use webhooks if available for your plan. Batch operations are supported for bulk label creation. ## Twilio SMS Integration Twilio's REST API requires Account SID and Auth Token. The Messaging API endpoint is /2010-04-01/Accounts/{AccountSid}/Messages.json. For two-way messaging, configure a webhook URL to receive incoming messages. Consider using a queue for high-volume outbound SMS to avoid rate limits. # PentaCodes Technical Reference and Integration Documentation # Version 1.0 | Last Updated March 2025 # This document contains technical reference material for common integrations and deployment procedures. ## QuickBooks Online Integration The QuickBooks Online API uses OAuth 2.0 for authentication. You will need to register your application in the Intuit Developer Portal to obtain client credentials. The base URL for the API is https://quickbooks.api.intuit.com/v3/company/{realmId}. Common endpoints include /invoice, /customer, /payment, and /bill. Rate limits apply: 500 requests per minute for production apps. Always implement exponential backoff for 429 responses. ## Stripe Payment Integration Stripe provides both client-side (Stripe.js) and server-side APIs. For PCI compliance, never pass raw card numbers through your server—use Stripe Elements or the Payment Intents API. Webhooks are essential for handling asynchronous events like payment succeeded or subscription renewed. Configure your webhook endpoint to verify signatures using the Stripe-Signature header. ## ShipStation Integration The ShipStation API is REST-based. Authentication uses API key and API secret in the Authorization header. Endpoints cover orders, shipments, carriers, and warehouses. Poll for new orders or use webhooks if available for your plan. Batch operations are supported for bulk label creation. ## Twilio SMS Integration Twilio's REST API requires Account SID and Auth Token. The Messaging API endpoint is /2010-04-01/Accounts/{AccountSid}/Messages.json. For two-way messaging, configure a webhook URL to receive incoming messages. Consider using a queue for high-volume outbound SMS to avoid rate limits. # PentaCodes Technical Reference and Integration Documentation # Version 1.0 | Last Updated March 2025 # This document contains technical reference material for common integrations and deployment procedures. ## QuickBooks Online Integration The QuickBooks Online API uses OAuth 2.0 for authentication. You will need to register your application in the Intuit Developer Portal to obtain client credentials. The base URL for the API is https://quickbooks.api.intuit.com/v3/company/{realmId}. Common endpoints include /invoice, /customer, /payment, and /bill. Rate limits apply: 500 requests per minute for production apps. Always implement exponential backoff for 429 responses. ## Stripe Payment Integration Stripe provides both client-side (Stripe.js) and server-side APIs. For PCI compliance, never pass raw card numbers through your server—use Stripe Elements or the Payment Intents API. Webhooks are essential for handling asynchronous events like payment succeeded or subscription renewed. Configure your webhook endpoint to verify signatures using the Stripe-Signature header. ## ShipStation Integration The ShipStation API is REST-based. Authentication uses API key and API secret in the Authorization header. Endpoints cover orders, shipments, carriers, and warehouses. Poll for new orders or use webhooks if available for your plan. Batch operations are supported for bulk label creation. ## Twilio SMS Integration Twilio's REST API requires Account SID and Auth Token. The Messaging API endpoint is /2010-04-01/Accounts/{AccountSid}/Messages.json. For two-way messaging, configure a webhook URL to receive incoming messages. Consider using a queue for high-volume outbound SMS to avoid rate limits. # PentaCodes Technical Reference and Integration Documentation # Version 1.0 | Last Updated March 2025 # This document contains technical reference material for common integrations and deployment procedures. ## QuickBooks Online Integration The QuickBooks Online API uses OAuth 2.0 for authentication. You will need to register your application in the Intuit Developer Portal to obtain client credentials. The base URL for the API is https://quickbooks.api.intuit.com/v3/company/{realmId}. Common endpoints include /invoice, /customer, /payment, and /bill. Rate limits apply: 500 requests per minute for production apps. Always implement exponential backoff for 429 responses. ## Stripe Payment Integration Stripe provides both client-side (Stripe.js) and server-side APIs. For PCI compliance, never pass raw card numbers through your server—use Stripe Elements or the Payment Intents API. Webhooks are essential for handling asynchronous events like payment succeeded or subscription renewed. Configure your webhook endpoint to verify signatures using the Stripe-Signature header. ## ShipStation Integration The ShipStation API is REST-based. Authentication uses API key and API secret in the Authorization header. Endpoints cover orders, shipments, carriers, and warehouses. Poll for new orders or use webhooks if available for your plan. Batch operations are supported for bulk label creation. ## Twilio SMS Integration Twilio's REST API requires Account SID and Auth Token. The Messaging API endpoint is /2010-04-01/Accounts/{AccountSid}/Messages.json. For two-way messaging, configure a webhook URL to receive incoming messages. Consider using a queue for high-volume outbound SMS to avoid rate limits. # PentaCodes Technical Reference and Integration Documentation # Version 1.0 | Last Updated March 2025 # This document contains technical reference material for common integrations and deployment procedures. ## QuickBooks Online Integration The QuickBooks Online API uses OAuth 2.0 for authentication. You will need to register your application in the Intuit Developer Portal to obtain client credentials. The base URL for the API is https://quickbooks.api.intuit.com/v3/company/{realmId}. Common endpoints include /invoice, /customer, /payment, and /bill. Rate limits apply: 500 requests per minute for production apps. Always implement exponential backoff for 429 responses. ## Stripe Payment Integration Stripe provides both client-side (Stripe.js) and server-side APIs. For PCI compliance, never pass raw card numbers through your server—use Stripe Elements or the Payment Intents API. Webhooks are essential for handling asynchronous events like payment succeeded or subscription renewed. Configure your webhook endpoint to verify signatures using the Stripe-Signature header. ## ShipStation Integration The ShipStation API is REST-based. Authentication uses API key and API secret in the Authorization header. Endpoints cover orders, shipments, carriers, and warehouses. Poll for new orders or use webhooks if available for your plan. Batch operations are supported for bulk label creation. ## Twilio SMS Integration Twilio's REST API requires Account SID and Auth Token. The Messaging API endpoint is /2010-04-01/Accounts/{AccountSid}/Messages.json. For two-way messaging, configure a webhook URL to receive incoming messages. Consider using a queue for high-volume outbound SMS to avoid rate limits. # PentaCodes Technical Reference and Integration Documentation # Version 1.0 | Last Updated March 2025 # This document contains technical reference material for common integrations and deployment procedures. ## QuickBooks Online Integration The QuickBooks Online API uses OAuth 2.0 for authentication. You will need to register your application in the Intuit Developer Portal to obtain client credentials. The base URL for the API is https://quickbooks.api.intuit.com/v3/company/{realmId}. Common endpoints include /invoice, /customer, /payment, and /bill. Rate limits apply: 500 requests per minute for production apps. Always implement exponential backoff for 429 responses. ## Stripe Payment Integration Stripe provides both client-side (Stripe.js) and server-side APIs. For PCI compliance, never pass raw card numbers through your server—use Stripe Elements or the Payment Intents API. Webhooks are essential for handling asynchronous events like payment succeeded or subscription renewed. Configure your webhook endpoint to verify signatures using the Stripe-Signature header. ## ShipStation Integration The ShipStation API is REST-based. Authentication uses API key and API secret in the Authorization header. Endpoints cover orders, shipments, carriers, and warehouses. Poll for new orders or use webhooks if available for your plan. Batch operations are supported for bulk label creation. ## Twilio SMS Integration Twilio's REST API requires Account SID and Auth Token. The Messaging API endpoint is /2010-04-01/Accounts/{AccountSid}/Messages.json. For two-way messaging, configure a webhook URL to receive incoming messages. Consider using a queue for high-volume outbound SMS to avoid rate limits. # PentaCodes Technical Reference and Integration Documentation # Version 1.0 | Last Updated March 2025 # This document contains technical reference material for common integrations and deployment procedures. ## QuickBooks Online Integration The QuickBooks Online API uses OAuth 2.0 for authentication. You will need to register your application in the Intuit Developer Portal to obtain client credentials. The base URL for the API is https://quickbooks.api.intuit.com/v3/company/{realmId}. Common endpoints include /invoice, /customer, /payment, and /bill. Rate limits apply: 500 requests per minute for production apps. Always implement exponential backoff for 429 responses. ## Stripe Payment Integration Stripe provides both client-side (Stripe.js) and server-side APIs. For PCI compliance, never pass raw card numbers through your server—use Stripe Elements or the Payment Intents API. Webhooks are essential for handling asynchronous events like payment succeeded or subscription renewed. Configure your webhook endpoint to verify signatures using the Stripe-Signature header. ## ShipStation Integration The ShipStation API is REST-based. Authentication uses API key and API secret in the Authorization header. Endpoints cover orders, shipments, carriers, and warehouses. Poll for new orders or use webhooks if available for your plan. Batch operations are supported for bulk label creation. ## Twilio SMS Integration Twilio's REST API requires Account SID and Auth Token. The Messaging API endpoint is /2010-04-01/Accounts/{AccountSid}/Messages.json. For two-way messaging, configure a webhook URL to receive incoming messages. Consider using a queue for high-volume outbound SMS to avoid rate limits. # PentaCodes Technical Reference and Integration Documentation # Version 1.0 | Last Updated March 2025 # This document contains technical reference material for common integrations and deployment procedures. ## QuickBooks Online Integration The QuickBooks Online API uses OAuth 2.0 for authentication. You will need to register your application in the Intuit Developer Portal to obtain client credentials. The base URL for the API is https://quickbooks.api.intuit.com/v3/company/{realmId}. Common endpoints include /invoice, /customer, /payment, and /bill. Rate limits apply: 500 requests per minute for production apps. Always implement exponential backoff for 429 responses. ## Stripe Payment Integration Stripe provides both client-side (Stripe.js) and server-side APIs. For PCI compliance, never pass raw card numbers through your server—use Stripe Elements or the Payment Intents API. Webhooks are essential for handling asynchronous events like payment succeeded or subscription renewed. Configure your webhook endpoint to verify signatures using the Stripe-Signature header. ## ShipStation Integration The ShipStation API is REST-based. Authentication uses API key and API secret in the Authorization header. Endpoints cover orders, shipments, carriers, and warehouses. Poll for new orders or use webhooks if available for your plan. Batch operations are supported for bulk label creation. ## Twilio SMS Integration Twilio's REST API requires Account SID and Auth Token. The Messaging API endpoint is /2010-04-01/Accounts/{AccountSid}/Messages.json. For two-way messaging, configure a webhook URL to receive incoming messages. Consider using a queue for high-volume outbound SMS to avoid rate limits. # PentaCodes Technical Reference and Integration Documentation # Version 1.0 | Last Updated March 2025 # This document contains technical reference material for common integrations and deployment procedures. ## QuickBooks Online Integration The QuickBooks Online API uses OAuth 2.0 for authentication. You will need to register your application in the Intuit Developer Portal to obtain client credentials. The base URL for the API is https://quickbooks.api.intuit.com/v3/company/{realmId}. Common endpoints include /invoice, /customer, /payment, and /bill. Rate limits apply: 500 requests per minute for production apps. Always implement exponential backoff for 429 responses. ## Stripe Payment Integration Stripe provides both client-side (Stripe.js) and server-side APIs. For PCI compliance, never pass raw card numbers through your server—use Stripe Elements or the Payment Intents API. Webhooks are essential for handling asynchronous events like payment succeeded or subscription renewed. Configure your webhook endpoint to verify signatures using the Stripe-Signature header. ## ShipStation Integration The ShipStation API is REST-based. Authentication uses API key and API secret in the Authorization header. Endpoints cover orders, shipments, carriers, and warehouses. Poll for new orders or use webhooks if available for your plan. Batch operations are supported for bulk label creation. ## Twilio SMS Integration Twilio's REST API requires Account SID and Auth Token. The Messaging API endpoint is /2010-04-01/Accounts/{AccountSid}/Messages.json. For two-way messaging, configure a webhook URL to receive incoming messages. Consider using a queue for high-volume outbound SMS to avoid rate limits. # PentaCodes Technical Reference and Integration Documentation # Version 1.0 | Last Updated March 2025 # This document contains technical reference material for common integrations and deployment procedures. ## QuickBooks Online Integration The QuickBooks Online API uses OAuth 2.0 for authentication. You will need to register your application in the Intuit Developer Portal to obtain client credentials. The base URL for the API is https://quickbooks.api.intuit.com/v3/company/{realmId}. Common endpoints include /invoice, /customer, /payment, and /bill. Rate limits apply: 500 requests per minute for production apps. Always implement exponential backoff for 429 responses. ## Stripe Payment Integration Stripe provides both client-side (Stripe.js) and server-side APIs. For PCI compliance, never pass raw card numbers through your server—use Stripe Elements or the Payment Intents API. Webhooks are essential for handling asynchronous events like payment succeeded or subscription renewed. Configure your webhook endpoint to verify signatures using the Stripe-Signature header. ## ShipStation Integration The ShipStation API is REST-based. Authentication uses API key and API secret in the Authorization header. Endpoints cover orders, shipments, carriers, and warehouses. Poll for new orders or use webhooks if available for your plan. Batch operations are supported for bulk label creation. ## Twilio SMS Integration Twilio's REST API requires Account SID and Auth Token. The Messaging API endpoint is /2010-04-01/Accounts/{AccountSid}/Messages.json. For two-way messaging, configure a webhook URL to receive incoming messages. Consider using a queue for high-volume outbound SMS to avoid rate limits. # PentaCodes Technical Reference and Integration Documentation # Version 1.0 | Last Updated March 2025 # This document contains technical reference material for common integrations and deployment procedures. ## QuickBooks Online Integration The QuickBooks Online API uses OAuth 2.0 for authentication. You will need to register your application in the Intuit Developer Portal to obtain client credentials. The base URL for the API is https://quickbooks.api.intuit.com/v3/company/{realmId}. Common endpoints include /invoice, /customer, /payment, and /bill. Rate limits apply: 500 requests per minute for production apps. Always implement exponential backoff for 429 responses. ## Stripe Payment Integration Stripe provides both client-side (Stripe.js) and server-side APIs. For PCI compliance, never pass raw card numbers through your server—use Stripe Elements or the Payment Intents API. Webhooks are essential for handling asynchronous events like payment succeeded or subscription renewed. Configure your webhook endpoint to verify signatures using the Stripe-Signature header. ## ShipStation Integration The ShipStation API is REST-based. Authentication uses API key and API secret in the Authorization header. Endpoints cover orders, shipments, carriers, and warehouses. Poll for new orders or use webhooks if available for your plan. Batch operations are supported for bulk label creation. ## Twilio SMS Integration Twilio's REST API requires Account SID and Auth Token. The Messaging API endpoint is /2010-04-01/Accounts/{AccountSid}/Messages.json. For two-way messaging, configure a webhook URL to receive incoming messages. Consider using a queue for high-volume outbound SMS to avoid rate limits. # PentaCodes Technical Reference and Integration Documentation # Version 1.0 | Last Updated March 2025 # This document contains technical reference material for common integrations and deployment procedures. ## QuickBooks Online Integration The QuickBooks Online API uses OAuth 2.0 for authentication. You will need to register your application in the Intuit Developer Portal to obtain client credentials. The base URL for the API is https://quickbooks.api.intuit.com/v3/company/{realmId}. Common endpoints include /invoice, /customer, /payment, and /bill. Rate limits apply: 500 requests per minute for production apps. Always implement exponential backoff for 429 responses. ## Stripe Payment Integration Stripe provides both client-side (Stripe.js) and server-side APIs. For PCI compliance, never pass raw card numbers through your server—use Stripe Elements or the Payment Intents API. Webhooks are essential for handling asynchronous events like payment succeeded or subscription renewed. Configure your webhook endpoint to verify signatures using the Stripe-Signature header. ## ShipStation Integration The ShipStation API is REST-based. Authentication uses API key and API secret in the Authorization header. Endpoints cover orders, shipments, carriers, and warehouses. Poll for new orders or use webhooks if available for your plan. Batch operations are supported for bulk label creation. ## Twilio SMS Integration Twilio's REST API requires Account SID and Auth Token. The Messaging API endpoint is /2010-04-01/Accounts/{AccountSid}/Messages.json. For two-way messaging, configure a webhook URL to receive incoming messages. Consider using a queue for high-volume outbound SMS to avoid rate limits. # PentaCodes Technical Reference and Integration Documentation # Version 1.0 | Last Updated March 2025 # This document contains technical reference material for common integrations and deployment procedures. ## QuickBooks Online Integration The QuickBooks Online API uses OAuth 2.0 for authentication. You will need to register your application in the Intuit Developer Portal to obtain client credentials. The base URL for the API is https://quickbooks.api.intuit.com/v3/company/{realmId}. Common endpoints include /invoice, /customer, /payment, and /bill. Rate limits apply: 500 requests per minute for production apps. Always implement exponential backoff for 429 responses. ## Stripe Payment Integration Stripe provides both client-side (Stripe.js) and server-side APIs. For PCI compliance, never pass raw card numbers through your server—use Stripe Elements or the Payment Intents API. Webhooks are essential for handling asynchronous events like payment succeeded or subscription renewed. Configure your webhook endpoint to verify signatures using the Stripe-Signature header. ## ShipStation Integration The ShipStation API is REST-based. Authentication uses API key and API secret in the Authorization header. Endpoints cover orders, shipments, carriers, and warehouses. Poll for new orders or use webhooks if available for your plan. Batch operations are supported for bulk label creation. ## Twilio SMS Integration Twilio's REST API requires Account SID and Auth Token. The Messaging API endpoint is /2010-04-01/Accounts/{AccountSid}/Messages.json. For two-way messaging, configure a webhook URL to receive incoming messages. Consider using a queue for high-volume outbound SMS to avoid rate limits. # PentaCodes Technical Reference and Integration Documentation # Version 1.0 | Last Updated March 2025 # This document contains technical reference material for common integrations and deployment procedures. ## QuickBooks Online Integration The QuickBooks Online API uses OAuth 2.0 for authentication. You will need to register your application in the Intuit Developer Portal to obtain client credentials. The base URL for the API is https://quickbooks.api.intuit.com/v3/company/{realmId}. Common endpoints include /invoice, /customer, /payment, and /bill. Rate limits apply: 500 requests per minute for production apps. Always implement exponential backoff for 429 responses. ## Stripe Payment Integration Stripe provides both client-side (Stripe.js) and server-side APIs. For PCI compliance, never pass raw card numbers through your server—use Stripe Elements or the Payment Intents API. Webhooks are essential for handling asynchronous events like payment succeeded or subscription renewed. Configure your webhook endpoint to verify signatures using the Stripe-Signature header. ## ShipStation Integration The ShipStation API is REST-based. Authentication uses API key and API secret in the Authorization header. Endpoints cover orders, shipments, carriers, and warehouses. Poll for new orders or use webhooks if available for your plan. Batch operations are supported for bulk label creation. ## Twilio SMS Integration Twilio's REST API requires Account SID and Auth Token. The Messaging API endpoint is /2010-04-01/Accounts/{AccountSid}/Messages.json. For two-way messaging, configure a webhook URL to receive incoming messages. Consider using a queue for high-volume outbound SMS to avoid rate limits. # PentaCodes Technical Reference and Integration Documentation # Version 1.0 | Last Updated March 2025 # This document contains technical reference material for common integrations and deployment procedures. ## QuickBooks Online Integration The QuickBooks Online API uses OAuth 2.0 for authentication. You will need to register your application in the Intuit Developer Portal to obtain client credentials. The base URL for the API is https://quickbooks.api.intuit.com/v3/company/{realmId}. Common endpoints include /invoice, /customer, /payment, and /bill. Rate limits apply: 500 requests per minute for production apps. Always implement exponential backoff for 429 responses. ## Stripe Payment Integration Stripe provides both client-side (Stripe.js) and server-side APIs. For PCI compliance, never pass raw card numbers through your server—use Stripe Elements or the Payment Intents API. Webhooks are essential for handling asynchronous events like payment succeeded or subscription renewed. Configure your webhook endpoint to verify signatures using the Stripe-Signature header. ## ShipStation Integration The ShipStation API is REST-based. Authentication uses API key and API secret in the Authorization header. Endpoints cover orders, shipments, carriers, and warehouses. Poll for new orders or use webhooks if available for your plan. Batch operations are supported for bulk label creation. ## Twilio SMS Integration Twilio's REST API requires Account SID and Auth Token. The Messaging API endpoint is /2010-04-01/Accounts/{AccountSid}/Messages.json. For two-way messaging, configure a webhook URL to receive incoming messages. Consider using a queue for high-volume outbound SMS to avoid rate limits. # PentaCodes Technical Reference and Integration Documentation # Version 1.0 | Last Updated March 2025 # This document contains technical reference material for common integrations and deployment procedures. ## QuickBooks Online Integration The QuickBooks Online API uses OAuth 2.0 for authentication. You will need to register your application in the Intuit Developer Portal to obtain client credentials. The base URL for the API is https://quickbooks.api.intuit.com/v3/company/{realmId}. Common endpoints include /invoice, /customer, /payment, and /bill. Rate limits apply: 500 requests per minute for production apps. Always implement exponential backoff for 429 responses. ## Stripe Payment Integration Stripe provides both client-side (Stripe.js) and server-side APIs. For PCI compliance, never pass raw card numbers through your server—use Stripe Elements or the Payment Intents API. Webhooks are essential for handling asynchronous events like payment succeeded or subscription renewed. Configure your webhook endpoint to verify signatures using the Stripe-Signature header. ## ShipStation Integration The ShipStation API is REST-based. Authentication uses API key and API secret in the Authorization header. Endpoints cover orders, shipments, carriers, and warehouses. Poll for new orders or use webhooks if available for your plan. Batch operations are supported for bulk label creation. ## Twilio SMS Integration Twilio's REST API requires Account SID and Auth Token. The Messaging API endpoint is /2010-04-01/Accounts/{AccountSid}/Messages.json. For two-way messaging, configure a webhook URL to receive incoming messages. Consider using a queue for high-volume outbound SMS to avoid rate limits. # PentaCodes Technical Reference and Integration Documentation # Version 1.0 | Last Updated March 2025 # This document contains technical reference material for common integrations and deployment procedures. ## QuickBooks Online Integration The QuickBooks Online API uses OAuth 2.0 for authentication. You will need to register your application in the Intuit Developer Portal to obtain client credentials. The base URL for the API is https://quickbooks.api.intuit.com/v3/company/{realmId}. Common endpoints include /invoice, /customer, /payment, and /bill. Rate limits apply: 500 requests per minute for production apps. Always implement exponential backoff for 429 responses. ## Stripe Payment Integration Stripe provides both client-side (Stripe.js) and server-side APIs. For PCI compliance, never pass raw card numbers through your server—use Stripe Elements or the Payment Intents API. Webhooks are essential for handling asynchronous events like payment succeeded or subscription renewed. Configure your webhook endpoint to verify signatures using the Stripe-Signature header. ## ShipStation Integration The ShipStation API is REST-based. Authentication uses API key and API secret in the Authorization header. Endpoints cover orders, shipments, carriers, and warehouses. Poll for new orders or use webhooks if available for your plan. Batch operations are supported for bulk label creation. ## Twilio SMS Integration Twilio's REST API requires Account SID and Auth Token. The Messaging API endpoint is /2010-04-01/Accounts/{AccountSid}/Messages.json. For two-way messaging, configure a webhook URL to receive incoming messages. Consider using a queue for high-volume outbound SMS to avoid rate limits. # PentaCodes Technical Reference and Integration Documentation # Version 1.0 | Last Updated March 2025 # This document contains technical reference material for common integrations and deployment procedures. ## QuickBooks Online Integration The QuickBooks Online API uses OAuth 2.0 for authentication. You will need to register your application in the Intuit Developer Portal to obtain client credentials. The base URL for the API is https://quickbooks.api.intuit.com/v3/company/{realmId}. Common endpoints include /invoice, /customer, /payment, and /bill. Rate limits apply: 500 requests per minute for production apps. Always implement exponential backoff for 429 responses. ## Stripe Payment Integration Stripe provides both client-side (Stripe.js) and server-side APIs. For PCI compliance, never pass raw card numbers through your server—use Stripe Elements or the Payment Intents API. Webhooks are essential for handling asynchronous events like payment succeeded or subscription renewed. Configure your webhook endpoint to verify signatures using the Stripe-Signature header. ## ShipStation Integration The ShipStation API is REST-based. Authentication uses API key and API secret in the Authorization header. Endpoints cover orders, shipments, carriers, and warehouses. Poll for new orders or use webhooks if available for your plan. Batch operations are supported for bulk label creation. ## Twilio SMS Integration Twilio's REST API requires Account SID and Auth Token. The Messaging API endpoint is /2010-04-01/Accounts/{AccountSid}/Messages.json. For two-way messaging, configure a webhook URL to receive incoming messages. Consider using a queue for high-volume outbound SMS to avoid rate limits. # PentaCodes Technical Reference and Integration Documentation # Version 1.0 | Last Updated March 2025 # This document contains technical reference material for common integrations and deployment procedures. ## QuickBooks Online Integration The QuickBooks Online API uses OAuth 2.0 for authentication. You will need to register your application in the Intuit Developer Portal to obtain client credentials. The base URL for the API is https://quickbooks.api.intuit.com/v3/company/{realmId}. Common endpoints include /invoice, /customer, /payment, and /bill. Rate limits apply: 500 requests per minute for production apps. Always implement exponential backoff for 429 responses. ## Stripe Payment Integration Stripe provides both client-side (Stripe.js) and server-side APIs. For PCI compliance, never pass raw card numbers through your server—use Stripe Elements or the Payment Intents API. Webhooks are essential for handling asynchronous events like payment succeeded or subscription renewed. Configure your webhook endpoint to verify signatures using the Stripe-Signature header. ## ShipStation Integration The ShipStation API is REST-based. Authentication uses API key and API secret in the Authorization header. Endpoints cover orders, shipments, carriers, and warehouses. Poll for new orders or use webhooks if available for your plan. Batch operations are supported for bulk label creation. ## Twilio SMS Integration Twilio's REST API requires Account SID and Auth Token. The Messaging API endpoint is /2010-04-01/Accounts/{AccountSid}/Messages.json. For two-way messaging, configure a webhook URL to receive incoming messages. Consider using a queue for high-volume outbound SMS to avoid rate limits. # PentaCodes Technical Reference and Integration Documentation # Version 1.0 | Last Updated March 2025 # This document contains technical reference material for common integrations and deployment procedures. ## QuickBooks Online Integration The QuickBooks Online API uses OAuth 2.0 for authentication. You will need to register your application in the Intuit Developer Portal to obtain client credentials. The base URL for the API is https://quickbooks.api.intuit.com/v3/company/{realmId}. Common endpoints include /invoice, /customer, /payment, and /bill. Rate limits apply: 500 requests per minute for production apps. Always implement exponential backoff for 429 responses. ## Stripe Payment Integration Stripe provides both client-side (Stripe.js) and server-side APIs. For PCI compliance, never pass raw card numbers through your server—use Stripe Elements or the Payment Intents API. Webhooks are essential for handling asynchronous events like payment succeeded or subscription renewed. Configure your webhook endpoint to verify signatures using the Stripe-Signature header. ## ShipStation Integration The ShipStation API is REST-based. Authentication uses API key and API secret in the Authorization header. Endpoints cover orders, shipments, carriers, and warehouses. Poll for new orders or use webhooks if available for your plan. Batch operations are supported for bulk label creation. ## Twilio SMS Integration Twilio's REST API requires Account SID and Auth Token. The Messaging API endpoint is /2010-04-01/Accounts/{AccountSid}/Messages.json. For two-way messaging, configure a webhook URL to receive incoming messages. Consider using a queue for high-volume outbound SMS to avoid rate limits. # PentaCodes Technical Reference and Integration Documentation # Version 1.0 | Last Updated March 2025 # This document contains technical reference material for common integrations and deployment procedures. ## QuickBooks Online Integration The QuickBooks Online API uses OAuth 2.0 for authentication. You will need to register your application in the Intuit Developer Portal to obtain client credentials. The base URL for the API is https://quickbooks.api.intuit.com/v3/company/{realmId}. Common endpoints include /invoice, /customer, /payment, and /bill. Rate limits apply: 500 requests per minute for production apps. Always implement exponential backoff for 429 responses. ## Stripe Payment Integration Stripe provides both client-side (Stripe.js) and server-side APIs. For PCI compliance, never pass raw card numbers through your server—use Stripe Elements or the Payment Intents API. Webhooks are essential for handling asynchronous events like payment succeeded or subscription renewed. Configure your webhook endpoint to verify signatures using the Stripe-Signature header. ## ShipStation Integration The ShipStation API is REST-based. Authentication uses API key and API secret in the Authorization header. Endpoints cover orders, shipments, carriers, and warehouses. Poll for new orders or use webhooks if available for your plan. Batch operations are supported for bulk label creation. ## Twilio SMS Integration Twilio's REST API requires Account SID and Auth Token. The Messaging API endpoint is /2010-04-01/Accounts/{AccountSid}/Messages.json. For two-way messaging, configure a webhook URL to receive incoming messages. Consider using a queue for high-volume outbound SMS to avoid rate limits. # PentaCodes Technical Reference and Integration Documentation # Version 1.0 | Last Updated March 2025 # This document contains technical reference material for common integrations and deployment procedures. ## QuickBooks Online Integration The QuickBooks Online API uses OAuth 2.0 for authentication. You will need to register your application in the Intuit Developer Portal to obtain client credentials. The base URL for the API is https://quickbooks.api.intuit.com/v3/company/{realmId}. Common endpoints include /invoice, /customer, /payment, and /bill. Rate limits apply: 500 requests per minute for production apps. Always implement exponential backoff for 429 responses. ## Stripe Payment Integration Stripe provides both client-side (Stripe.js) and server-side APIs. For PCI compliance, never pass raw card numbers through your server—use Stripe Elements or the Payment Intents API. Webhooks are essential for handling asynchronous events like payment succeeded or subscription renewed. Configure your webhook endpoint to verify signatures using the Stripe-Signature header. ## ShipStation Integration The ShipStation API is REST-based. Authentication uses API key and API secret in the Authorization header. Endpoints cover orders, shipments, carriers, and warehouses. Poll for new orders or use webhooks if available for your plan. Batch operations are supported for bulk label creation. ## Twilio SMS Integration Twilio's REST API requires Account SID and Auth Token. The Messaging API endpoint is /2010-04-01/Accounts/{AccountSid}/Messages.json. For two-way messaging, configure a webhook URL to receive incoming messages. Consider using a queue for high-volume outbound SMS to avoid rate limits. # PentaCodes Technical Reference and Integration Documentation # Version 1.0 | Last Updated March 2025 # This document contains technical reference material for common integrations and deployment procedures. ## QuickBooks Online Integration The QuickBooks Online API uses OAuth 2.0 for authentication. You will need to register your application in the Intuit Developer Portal to obtain client credentials. The base URL for the API is https://quickbooks.api.intuit.com/v3/company/{realmId}. Common endpoints include /invoice, /customer, /payment, and /bill. Rate limits apply: 500 requests per minute for production apps. Always implement exponential backoff for 429 responses. ## Stripe Payment Integration Stripe provides both client-side (Stripe.js) and server-side APIs. For PCI compliance, never pass raw card numbers through your server—use Stripe Elements or the Payment Intents API. Webhooks are essential for handling asynchronous events like payment succeeded or subscription renewed. Configure your webhook endpoint to verify signatures using the Stripe-Signature header. ## ShipStation Integration The ShipStation API is REST-based. Authentication uses API key and API secret in the Authorization header. Endpoints cover orders, shipments, carriers, and warehouses. Poll for new orders or use webhooks if available for your plan. Batch operations are supported for bulk label creation. ## Twilio SMS Integration Twilio's REST API requires Account SID and Auth Token. The Messaging API endpoint is /2010-04-01/Accounts/{AccountSid}/Messages.json. For two-way messaging, configure a webhook URL to receive incoming messages. Consider using a queue for high-volume outbound SMS to avoid rate limits. # PentaCodes Technical Reference and Integration Documentation # Version 1.0 | Last Updated March 2025 # This document contains technical reference material for common integrations and deployment procedures. ## QuickBooks Online Integration The QuickBooks Online API uses OAuth 2.0 for authentication. You will need to register your application in the Intuit Developer Portal to obtain client credentials. The base URL for the API is https://quickbooks.api.intuit.com/v3/company/{realmId}. Common endpoints include /invoice, /customer, /payment, and /bill. Rate limits apply: 500 requests per minute for production apps. Always implement exponential backoff for 429 responses. ## Stripe Payment Integration Stripe provides both client-side (Stripe.js) and server-side APIs. For PCI compliance, never pass raw card numbers through your server—use Stripe Elements or the Payment Intents API. Webhooks are essential for handling asynchronous events like payment succeeded or subscription renewed. Configure your webhook endpoint to verify signatures using the Stripe-Signature header. ## ShipStation Integration The ShipStation API is REST-based. Authentication uses API key and API secret in the Authorization header. Endpoints cover orders, shipments, carriers, and warehouses. Poll for new orders or use webhooks if available for your plan. Batch operations are supported for bulk label creation. ## Twilio SMS Integration Twilio's REST API requires Account SID and Auth Token. The Messaging API endpoint is /2010-04-01/Accounts/{AccountSid}/Messages.json. For two-way messaging, configure a webhook URL to receive incoming messages. Consider using a queue for high-volume outbound SMS to avoid rate limits. # PentaCodes Technical Reference and Integration Documentation # Version 1.0 | Last Updated March 2025 # This document contains technical reference material for common integrations and deployment procedures. ## QuickBooks Online Integration The QuickBooks Online API uses OAuth 2.0 for authentication. You will need to register your application in the Intuit Developer Portal to obtain client credentials. The base URL for the API is https://quickbooks.api.intuit.com/v3/company/{realmId}. Common endpoints include /invoice, /customer, /payment, and /bill. Rate limits apply: 500 requests per minute for production apps. Always implement exponential backoff for 429 responses. ## Stripe Payment Integration Stripe provides both client-side (Stripe.js) and server-side APIs. For PCI compliance, never pass raw card numbers through your server—use Stripe Elements or the Payment Intents API. Webhooks are essential for handling asynchronous events like payment succeeded or subscription renewed. Configure your webhook endpoint to verify signatures using the Stripe-Signature header. ## ShipStation Integration The ShipStation API is REST-based. Authentication uses API key and API secret in the Authorization header. Endpoints cover orders, shipments, carriers, and warehouses. Poll for new orders or use webhooks if available for your plan. Batch operations are supported for bulk label creation. ## Twilio SMS Integration Twilio's REST API requires Account SID and Auth Token. The Messaging API endpoint is /2010-04-01/Accounts/{AccountSid}/Messages.json. For two-way messaging, configure a webhook URL to receive incoming messages. Consider using a queue for high-volume outbound SMS to avoid rate limits. # PentaCodes Technical Reference and Integration Documentation # Version 1.0 | Last Updated March 2025 # This document contains technical reference material for common integrations and deployment procedures. ## QuickBooks Online Integration The QuickBooks Online API uses OAuth 2.0 for authentication. You will need to register your application in the Intuit Developer Portal to obtain client credentials. The base URL for the API is https://quickbooks.api.intuit.com/v3/company/{realmId}. Common endpoints include /invoice, /customer, /payment, and /bill. Rate limits apply: 500 requests per minute for production apps. Always implement exponential backoff for 429 responses. ## Stripe Payment Integration Stripe provides both client-side (Stripe.js) and server-side APIs. For PCI compliance, never pass raw card numbers through your server—use Stripe Elements or the Payment Intents API. Webhooks are essential for handling asynchronous events like payment succeeded or subscription renewed. Configure your webhook endpoint to verify signatures using the Stripe-Signature header. ## ShipStation Integration The ShipStation API is REST-based. Authentication uses API key and API secret in the Authorization header. Endpoints cover orders, shipments, carriers, and warehouses. Poll for new orders or use webhooks if available for your plan. Batch operations are supported for bulk label creation. ## Twilio SMS Integration Twilio's REST API requires Account SID and Auth Token. The Messaging API endpoint is /2010-04-01/Accounts/{AccountSid}/Messages.json. For two-way messaging, configure a webhook URL to receive incoming messages. Consider using a queue for high-volume outbound SMS to avoid rate limits. # PentaCodes Technical Reference and Integration Documentation # Version 1.0 | Last Updated March 2025 # This document contains technical reference material for common integrations and deployment procedures. ## QuickBooks Online Integration The QuickBooks Online API uses OAuth 2.0 for authentication. You will need to register your application in the Intuit Developer Portal to obtain client credentials. The base URL for the API is https://quickbooks.api.intuit.com/v3/company/{realmId}. Common endpoints include /invoice, /customer, /payment, and /bill. Rate limits apply: 500 requests per minute for production apps. Always implement exponential backoff for 429 responses. ## Stripe Payment Integration Stripe provides both client-side (Stripe.js) and server-side APIs. For PCI compliance, never pass raw card numbers through your server—use Stripe Elements or the Payment Intents API. Webhooks are essential for handling asynchronous events like payment succeeded or subscription renewed. Configure your webhook endpoint to verify signatures using the Stripe-Signature header. ## ShipStation Integration The ShipStation API is REST-based. Authentication uses API key and API secret in the Authorization header. Endpoints cover orders, shipments, carriers, and warehouses. Poll for new orders or use webhooks if available for your plan. Batch operations are supported for bulk label creation. ## Twilio SMS Integration Twilio's REST API requires Account SID and Auth Token. The Messaging API endpoint is /2010-04-01/Accounts/{AccountSid}/Messages.json. For two-way messaging, configure a webhook URL to receive incoming messages. Consider using a queue for high-volume outbound SMS to avoid rate limits. # PentaCodes Technical Reference and Integration Documentation # Version 1.0 | Last Updated March 2025 # This document contains technical reference material for common integrations and deployment procedures. ## QuickBooks Online Integration The QuickBooks Online API uses OAuth 2.0 for authentication. You will need to register your application in the Intuit Developer Portal to obtain client credentials. The base URL for the API is https://quickbooks.api.intuit.com/v3/company/{realmId}. Common endpoints include /invoice, /customer, /payment, and /bill. Rate limits apply: 500 requests per minute for production apps. Always implement exponential backoff for 429 responses. ## Stripe Payment Integration Stripe provides both client-side (Stripe.js) and server-side APIs. For PCI compliance, never pass raw card numbers through your server—use Stripe Elements or the Payment Intents API. Webhooks are essential for handling asynchronous events like payment succeeded or subscription renewed. Configure your webhook endpoint to verify signatures using the Stripe-Signature header. ## ShipStation Integration The ShipStation API is REST-based. Authentication uses API key and API secret in the Authorization header. Endpoints cover orders, shipments, carriers, and warehouses. Poll for new orders or use webhooks if available for your plan. Batch operations are supported for bulk label creation. ## Twilio SMS Integration Twilio's REST API requires Account SID and Auth Token. The Messaging API endpoint is /2010-04-01/Accounts/{AccountSid}/Messages.json. For two-way messaging, configure a webhook URL to receive incoming messages. Consider using a queue for high-volume outbound SMS to avoid rate limits. # PentaCodes Technical Reference and Integration Documentation # Version 1.0 | Last Updated March 2025 # This document contains technical reference material for common integrations and deployment procedures. ## QuickBooks Online Integration The QuickBooks Online API uses OAuth 2.0 for authentication. You will need to register your application in the Intuit Developer Portal to obtain client credentials. The base URL for the API is https://quickbooks.api.intuit.com/v3/company/{realmId}. Common endpoints include /invoice, /customer, /payment, and /bill. Rate limits apply: 500 requests per minute for production apps. Always implement exponential backoff for 429 responses. ## Stripe Payment Integration Stripe provides both client-side (Stripe.js) and server-side APIs. For PCI compliance, never pass raw card numbers through your server—use Stripe Elements or the Payment Intents API. Webhooks are essential for handling asynchronous events like payment succeeded or subscription renewed. Configure your webhook endpoint to verify signatures using the Stripe-Signature header. ## ShipStation Integration The ShipStation API is REST-based. Authentication uses API key and API secret in the Authorization header. Endpoints cover orders, shipments, carriers, and warehouses. Poll for new orders or use webhooks if available for your plan. Batch operations are supported for bulk label creation. ## Twilio SMS Integration Twilio's REST API requires Account SID and Auth Token. The Messaging API endpoint is /2010-04-01/Accounts/{AccountSid}/Messages.json. For two-way messaging, configure a webhook URL to receive incoming messages. Consider using a queue for high-volume outbound SMS to avoid rate limits. # PentaCodes Technical Reference and Integration Documentation # Version 1.0 | Last Updated March 2025 # This document contains technical reference material for common integrations and deployment procedures. ## QuickBooks Online Integration The QuickBooks Online API uses OAuth 2.0 for authentication. You will need to register your application in the Intuit Developer Portal to obtain client credentials. The base URL for the API is https://quickbooks.api.intuit.com/v3/company/{realmId}. Common endpoints include /invoice, /customer, /payment, and /bill. Rate limits apply: 500 requests per minute for production apps. Always implement exponential backoff for 429 responses. ## Stripe Payment Integration Stripe provides both client-side (Stripe.js) and server-side APIs. For PCI compliance, never pass raw card numbers through your server—use Stripe Elements or the Payment Intents API. Webhooks are essential for handling asynchronous events like payment succeeded or subscription renewed. Configure your webhook endpoint to verify signatures using the Stripe-Signature header. ## ShipStation Integration The ShipStation API is REST-based. Authentication uses API key and API secret in the Authorization header. Endpoints cover orders, shipments, carriers, and warehouses. Poll for new orders or use webhooks if available for your plan. Batch operations are supported for bulk label creation. ## Twilio SMS Integration Twilio's REST API requires Account SID and Auth Token. The Messaging API endpoint is /2010-04-01/Accounts/{AccountSid}/Messages.json. For two-way messaging, configure a webhook URL to receive incoming messages. Consider using a queue for high-volume outbound SMS to avoid rate limits. # PentaCodes Technical Reference and Integration Documentation # Version 1.0 | Last Updated March 2025 # This document contains technical reference material for common integrations and deployment procedures. ## QuickBooks Online Integration The QuickBooks Online API uses OAuth 2.0 for authentication. You will need to register your application in the Intuit Developer Portal to obtain client credentials. The base URL for the API is https://quickbooks.api.intuit.com/v3/company/{realmId}. Common endpoints include /invoice, /customer, /payment, and /bill. Rate limits apply: 500 requests per minute for production apps. Always implement exponential backoff for 429 responses. ## Stripe Payment Integration Stripe provides both client-side (Stripe.js) and server-side APIs. For PCI compliance, never pass raw card numbers through your server—use Stripe Elements or the Payment Intents API. Webhooks are essential for handling asynchronous events like payment succeeded or subscription renewed. Configure your webhook endpoint to verify signatures using the Stripe-Signature header. ## ShipStation Integration The ShipStation API is REST-based. Authentication uses API key and API secret in the Authorization header. Endpoints cover orders, shipments, carriers, and warehouses. Poll for new orders or use webhooks if available for your plan. Batch operations are supported for bulk label creation. ## Twilio SMS Integration Twilio's REST API requires Account SID and Auth Token. The Messaging API endpoint is /2010-04-01/Accounts/{AccountSid}/Messages.json. For two-way messaging, configure a webhook URL to receive incoming messages. Consider using a queue for high-volume outbound SMS to avoid rate limits. # PentaCodes Technical Reference and Integration Documentation # Version 1.0 | Last Updated March 2025 # This document contains technical reference material for common integrations and deployment procedures. ## QuickBooks Online Integration The QuickBooks Online API uses OAuth 2.0 for authentication. You will need to register your application in the Intuit Developer Portal to obtain client credentials. The base URL for the API is https://quickbooks.api.intuit.com/v3/company/{realmId}. Common endpoints include /invoice, /customer, /payment, and /bill. Rate limits apply: 500 requests per minute for production apps. Always implement exponential backoff for 429 responses. ## Stripe Payment Integration Stripe provides both client-side (Stripe.js) and server-side APIs. For PCI compliance, never pass raw card numbers through your server—use Stripe Elements or the Payment Intents API. Webhooks are essential for handling asynchronous events like payment succeeded or subscription renewed. Configure your webhook endpoint to verify signatures using the Stripe-Signature header. ## ShipStation Integration The ShipStation API is REST-based. Authentication uses API key and API secret in the Authorization header. Endpoints cover orders, shipments, carriers, and warehouses. Poll for new orders or use webhooks if available for your plan. Batch operations are supported for bulk label creation. ## Twilio SMS Integration Twilio's REST API requires Account SID and Auth Token. The Messaging API endpoint is /2010-04-01/Accounts/{AccountSid}/Messages.json. For two-way messaging, configure a webhook URL to receive incoming messages. Consider using a queue for high-volume outbound SMS to avoid rate limits. # PentaCodes Technical Reference and Integration Documentation # Version 1.0 | Last Updated March 2025 # This document contains technical reference material for common integrations and deployment procedures. ## QuickBooks Online Integration The QuickBooks Online API uses OAuth 2.0 for authentication. You will need to register your application in the Intuit Developer Portal to obtain client credentials. The base URL for the API is https://quickbooks.api.intuit.com/v3/company/{realmId}. Common endpoints include /invoice, /customer, /payment, and /bill. Rate limits apply: 500 requests per minute for production apps. Always implement exponential backoff for 429 responses. ## Stripe Payment Integration Stripe provides both client-side (Stripe.js) and server-side APIs. For PCI compliance, never pass raw card numbers through your server—use Stripe Elements or the Payment Intents API. Webhooks are essential for handling asynchronous events like payment succeeded or subscription renewed. Configure your webhook endpoint to verify signatures using the Stripe-Signature header. ## ShipStation Integration The ShipStation API is REST-based. Authentication uses API key and API secret in the Authorization header. Endpoints cover orders, shipments, carriers, and warehouses. Poll for new orders or use webhooks if available for your plan. Batch operations are supported for bulk label creation. ## Twilio SMS Integration Twilio's REST API requires Account SID and Auth Token. The Messaging API endpoint is /2010-04-01/Accounts/{AccountSid}/Messages.json. For two-way messaging, configure a webhook URL to receive incoming messages. Consider using a queue for high-volume outbound SMS to avoid rate limits. # PentaCodes Technical Reference and Integration Documentation # Version 1.0 | Last Updated March 2025 # This document contains technical reference material for common integrations and deployment procedures. ## QuickBooks Online Integration The QuickBooks Online API uses OAuth 2.0 for authentication. You will need to register your application in the Intuit Developer Portal to obtain client credentials. The base URL for the API is https://quickbooks.api.intuit.com/v3/company/{realmId}. Common endpoints include /invoice, /customer, /payment, and /bill. Rate limits apply: 500 requests per minute for production apps. Always implement exponential backoff for 429 responses. ## Stripe Payment Integration Stripe provides both client-side (Stripe.js) and server-side APIs. For PCI compliance, never pass raw card numbers through your server—use Stripe Elements or the Payment Intents API. Webhooks are essential for handling asynchronous events like payment succeeded or subscription renewed. Configure your webhook endpoint to verify signatures using the Stripe-Signature header. ## ShipStation Integration The ShipStation API is REST-based. Authentication uses API key and API secret in the Authorization header. Endpoints cover orders, shipments, carriers, and warehouses. Poll for new orders or use webhooks if available for your plan. Batch operations are supported for bulk label creation. ## Twilio SMS Integration Twilio's REST API requires Account SID and Auth Token. The Messaging API endpoint is /2010-04-01/Accounts/{AccountSid}/Messages.json. For two-way messaging, configure a webhook URL to receive incoming messages. Consider using a queue for high-volume outbound SMS to avoid rate limits. # PentaCodes Technical Reference and Integration Documentation # Version 1.0 | Last Updated March 2025 # This document contains technical reference material for common integrations and deployment procedures. ## QuickBooks Online Integration The QuickBooks Online API uses OAuth 2.0 for authentication. You will need to register your application in the Intuit Developer Portal to obtain client credentials. The base URL for the API is https://quickbooks.api.intuit.com/v3/company/{realmId}. Common endpoints include /invoice, /customer, /payment, and /bill. Rate limits apply: 500 requests per minute for production apps. Always implement exponential backoff for 429 responses. ## Stripe Payment Integration Stripe provides both client-side (Stripe.js) and server-side APIs. For PCI compliance, never pass raw card numbers through your server—use Stripe Elements or the Payment Intents API. Webhooks are essential for handling asynchronous events like payment succeeded or subscription renewed. Configure your webhook endpoint to verify signatures using the Stripe-Signature header. ## ShipStation Integration The ShipStation API is REST-based. Authentication uses API key and API secret in the Authorization header. Endpoints cover orders, shipments, carriers, and warehouses. Poll for new orders or use webhooks if available for your plan. Batch operations are supported for bulk label creation. ## Twilio SMS Integration Twilio's REST API requires Account SID and Auth Token. The Messaging API endpoint is /2010-04-01/Accounts/{AccountSid}/Messages.json. For two-way messaging, configure a webhook URL to receive incoming messages. Consider using a queue for high-volume outbound SMS to avoid rate limits. # PentaCodes Technical Reference and Integration Documentation # Version 1.0 | Last Updated March 2025 # This document contains technical reference material for common integrations and deployment procedures. ## QuickBooks Online Integration The QuickBooks Online API uses OAuth 2.0 for authentication. You will need to register your application in the Intuit Developer Portal to obtain client credentials. The base URL for the API is https://quickbooks.api.intuit.com/v3/company/{realmId}. Common endpoints include /invoice, /customer, /payment, and /bill. Rate limits apply: 500 requests per minute for production apps. Always implement exponential backoff for 429 responses. ## Stripe Payment Integration Stripe provides both client-side (Stripe.js) and server-side APIs. For PCI compliance, never pass raw card numbers through your server—use Stripe Elements or the Payment Intents API. Webhooks are essential for handling asynchronous events like payment succeeded or subscription renewed. Configure your webhook endpoint to verify signatures using the Stripe-Signature header. ## ShipStation Integration The ShipStation API is REST-based. Authentication uses API key and API secret in the Authorization header. Endpoints cover orders, shipments, carriers, and warehouses. Poll for new orders or use webhooks if available for your plan. Batch operations are supported for bulk label creation. ## Twilio SMS Integration Twilio's REST API requires Account SID and Auth Token. The Messaging API endpoint is /2010-04-01/Accounts/{AccountSid}/Messages.json. For two-way messaging, configure a webhook URL to receive incoming messages. Consider using a queue for high-volume outbound SMS to avoid rate limits. # PentaCodes Technical Reference and Integration Documentation # Version 1.0 | Last Updated March 2025 # This document contains technical reference material for common integrations and deployment procedures. ## QuickBooks Online Integration The QuickBooks Online API uses OAuth 2.0 for authentication. You will need to register your application in the Intuit Developer Portal to obtain client credentials. The base URL for the API is https://quickbooks.api.intuit.com/v3/company/{realmId}. Common endpoints include /invoice, /customer, /payment, and /bill. Rate limits apply: 500 requests per minute for production apps. Always implement exponential backoff for 429 responses. ## Stripe Payment Integration Stripe provides both client-side (Stripe.js) and server-side APIs. For PCI compliance, never pass raw card numbers through your server—use Stripe Elements or the Payment Intents API. Webhooks are essential for handling asynchronous events like payment succeeded or subscription renewed. Configure your webhook endpoint to verify signatures using the Stripe-Signature header. ## ShipStation Integration The ShipStation API is REST-based. Authentication uses API key and API secret in the Authorization header. Endpoints cover orders, shipments, carriers, and warehouses. Poll for new orders or use webhooks if available for your plan. Batch operations are supported for bulk label creation. ## Twilio SMS Integration Twilio's REST API requires Account SID and Auth Token. The Messaging API endpoint is /2010-04-01/Accounts/{AccountSid}/Messages.json. For two-way messaging, configure a webhook URL to receive incoming messages. Consider using a queue for high-volume outbound SMS to avoid rate limits. # PentaCodes Technical Reference and Integration Documentation # Version 1.0 | Last Updated March 2025 # This document contains technical reference material for common integrations and deployment procedures. ## QuickBooks Online Integration The QuickBooks Online API uses OAuth 2.0 for authentication. You will need to register your application in the Intuit Developer Portal to obtain client credentials. The base URL for the API is https://quickbooks.api.intuit.com/v3/company/{realmId}. Common endpoints include /invoice, /customer, /payment, and /bill. Rate limits apply: 500 requests per minute for production apps. Always implement exponential backoff for 429 responses. ## Stripe Payment Integration Stripe provides both client-side (Stripe.js) and server-side APIs. For PCI compliance, never pass raw card numbers through your server—use Stripe Elements or the Payment Intents API. Webhooks are essential for handling asynchronous events like payment succeeded or subscription renewed. Configure your webhook endpoint to verify signatures using the Stripe-Signature header. ## ShipStation Integration The ShipStation API is REST-based. Authentication uses API key and API secret in the Authorization header. Endpoints cover orders, shipments, carriers, and warehouses. Poll for new orders or use webhooks if available for your plan. Batch operations are supported for bulk label creation. ## Twilio SMS Integration Twilio's REST API requires Account SID and Auth Token. The Messaging API endpoint is /2010-04-01/Accounts/{AccountSid}/Messages.json. For two-way messaging, configure a webhook URL to receive incoming messages. Consider using a queue for high-volume outbound SMS to avoid rate limits. # PentaCodes Technical Reference and Integration Documentation # Version 1.0 | Last Updated March 2025 # This document contains technical reference material for common integrations and deployment procedures. ## QuickBooks Online Integration The QuickBooks Online API uses OAuth 2.0 for authentication. You will need to register your application in the Intuit Developer Portal to obtain client credentials. The base URL for the API is https://quickbooks.api.intuit.com/v3/company/{realmId}. Common endpoints include /invoice, /customer, /payment, and /bill. Rate limits apply: 500 requests per minute for production apps. Always implement exponential backoff for 429 responses. ## Stripe Payment Integration Stripe provides both client-side (Stripe.js) and server-side APIs. For PCI compliance, never pass raw card numbers through your server—use Stripe Elements or the Payment Intents API. Webhooks are essential for handling asynchronous events like payment succeeded or subscription renewed. Configure your webhook endpoint to verify signatures using the Stripe-Signature header. ## ShipStation Integration The ShipStation API is REST-based. Authentication uses API key and API secret in the Authorization header. Endpoints cover orders, shipments, carriers, and warehouses. Poll for new orders or use webhooks if available for your plan. Batch operations are supported for bulk label creation. ## Twilio SMS Integration Twilio's REST API requires Account SID and Auth Token. The Messaging API endpoint is /2010-04-01/Accounts/{AccountSid}/Messages.json. For two-way messaging, configure a webhook URL to receive incoming messages. Consider using a queue for high-volume outbound SMS to avoid rate limits. # PentaCodes Technical Reference and Integration Documentation # Version 1.0 | Last Updated March 2025 # This document contains technical reference material for common integrations and deployment procedures. ## QuickBooks Online Integration The QuickBooks Online API uses OAuth 2.0 for authentication. You will need to register your application in the Intuit Developer Portal to obtain client credentials. The base URL for the API is https://quickbooks.api.intuit.com/v3/company/{realmId}. Common endpoints include /invoice, /customer, /payment, and /bill. Rate limits apply: 500 requests per minute for production apps. Always implement exponential backoff for 429 responses. ## Stripe Payment Integration Stripe provides both client-side (Stripe.js) and server-side APIs. For PCI compliance, never pass raw card numbers through your server—use Stripe Elements or the Payment Intents API. Webhooks are essential for handling asynchronous events like payment succeeded or subscription renewed. Configure your webhook endpoint to verify signatures using the Stripe-Signature header. ## ShipStation Integration The ShipStation API is REST-based. Authentication uses API key and API secret in the Authorization header. Endpoints cover orders, shipments, carriers, and warehouses. Poll for new orders or use webhooks if available for your plan. Batch operations are supported for bulk label creation. ## Twilio SMS Integration Twilio's REST API requires Account SID and Auth Token. The Messaging API endpoint is /2010-04-01/Accounts/{AccountSid}/Messages.json. For two-way messaging, configure a webhook URL to receive incoming messages. Consider using a queue for high-volume outbound SMS to avoid rate limits. # PentaCodes Technical Reference and Integration Documentation # Version 1.0 | Last Updated March 2025 # This document contains technical reference material for common integrations and deployment procedures. ## QuickBooks Online Integration The QuickBooks Online API uses OAuth 2.0 for authentication. You will need to register your application in the Intuit Developer Portal to obtain client credentials. The base URL for the API is https://quickbooks.api.intuit.com/v3/company/{realmId}. Common endpoints include /invoice, /customer, /payment, and /bill. Rate limits apply: 500 requests per minute for production apps. Always implement exponential backoff for 429 responses. ## Stripe Payment Integration Stripe provides both client-side (Stripe.js) and server-side APIs. For PCI compliance, never pass raw card numbers through your server—use Stripe Elements or the Payment Intents API. Webhooks are essential for handling asynchronous events like payment succeeded or subscription renewed. Configure your webhook endpoint to verify signatures using the Stripe-Signature header. ## ShipStation Integration The ShipStation API is REST-based. Authentication uses API key and API secret in the Authorization header. Endpoints cover orders, shipments, carriers, and warehouses. Poll for new orders or use webhooks if available for your plan. Batch operations are supported for bulk label creation. ## Twilio SMS Integration Twilio's REST API requires Account SID and Auth Token. The Messaging API endpoint is /2010-04-01/Accounts/{AccountSid}/Messages.json. For two-way messaging, configure a webhook URL to receive incoming messages. Consider using a queue for high-volume outbound SMS to avoid rate limits. # PentaCodes Technical Reference and Integration Documentation # Version 1.0 | Last Updated March 2025 # This document contains technical reference material for common integrations and deployment procedures. ## QuickBooks Online Integration The QuickBooks Online API uses OAuth 2.0 for authentication. You will need to register your application in the Intuit Developer Portal to obtain client credentials. The base URL for the API is https://quickbooks.api.intuit.com/v3/company/{realmId}. Common endpoints include /invoice, /customer, /payment, and /bill. Rate limits apply: 500 requests per minute for production apps. Always implement exponential backoff for 429 responses. ## Stripe Payment Integration Stripe provides both client-side (Stripe.js) and server-side APIs. For PCI compliance, never pass raw card numbers through your server—use Stripe Elements or the Payment Intents API. Webhooks are essential for handling asynchronous events like payment succeeded or subscription renewed. Configure your webhook endpoint to verify signatures using the Stripe-Signature header. ## ShipStation Integration The ShipStation API is REST-based. Authentication uses API key and API secret in the Authorization header. Endpoints cover orders, shipments, carriers, and warehouses. Poll for new orders or use webhooks if available for your plan. Batch operations are supported for bulk label creation. ## Twilio SMS Integration Twilio's REST API requires Account SID and Auth Token. The Messaging API endpoint is /2010-04-01/Accounts/{AccountSid}/Messages.json. For two-way messaging, configure a webhook URL to receive incoming messages. Consider using a queue for high-volume outbound SMS to avoid rate limits. # PentaCodes Technical Reference and Integration Documentation # Version 1.0 | Last Updated March 2025 # This document contains technical reference material for common integrations and deployment procedures. ## QuickBooks Online Integration The QuickBooks Online API uses OAuth 2.0 for authentication. You will need to register your application in the Intuit Developer Portal to obtain client credentials. The base URL for the API is https://quickbooks.api.intuit.com/v3/company/{realmId}. Common endpoints include /invoice, /customer, /payment, and /bill. Rate limits apply: 500 requests per minute for production apps. Always implement exponential backoff for 429 responses. ## Stripe Payment Integration Stripe provides both client-side (Stripe.js) and server-side APIs. For PCI compliance, never pass raw card numbers through your server—use Stripe Elements or the Payment Intents API. Webhooks are essential for handling asynchronous events like payment succeeded or subscription renewed. Configure your webhook endpoint to verify signatures using the Stripe-Signature header. ## ShipStation Integration The ShipStation API is REST-based. Authentication uses API key and API secret in the Authorization header. Endpoints cover orders, shipments, carriers, and warehouses. Poll for new orders or use webhooks if available for your plan. Batch operations are supported for bulk label creation. ## Twilio SMS Integration Twilio's REST API requires Account SID and Auth Token. The Messaging API endpoint is /2010-04-01/Accounts/{AccountSid}/Messages.json. For two-way messaging, configure a webhook URL to receive incoming messages. Consider using a queue for high-volume outbound SMS to avoid rate limits. # PentaCodes Technical Reference and Integration Documentation # Version 1.0 | Last Updated March 2025 # This document contains technical reference material for common integrations and deployment procedures. ## QuickBooks Online Integration The QuickBooks Online API uses OAuth 2.0 for authentication. You will need to register your application in the Intuit Developer Portal to obtain client credentials. The base URL for the API is https://quickbooks.api.intuit.com/v3/company/{realmId}. Common endpoints include /invoice, /customer, /payment, and /bill. Rate limits apply: 500 requests per minute for production apps. Always implement exponential backoff for 429 responses. ## Stripe Payment Integration Stripe provides both client-side (Stripe.js) and server-side APIs. For PCI compliance, never pass raw card numbers through your server—use Stripe Elements or the Payment Intents API. Webhooks are essential for handling asynchronous events like payment succeeded or subscription renewed. Configure your webhook endpoint to verify signatures using the Stripe-Signature header. ## ShipStation Integration The ShipStation API is REST-based. Authentication uses API key and API secret in the Authorization header. Endpoints cover orders, shipments, carriers, and warehouses. Poll for new orders or use webhooks if available for your plan. Batch operations are supported for bulk label creation. ## Twilio SMS Integration Twilio's REST API requires Account SID and Auth Token. The Messaging API endpoint is /2010-04-01/Accounts/{AccountSid}/Messages.json. For two-way messaging, configure a webhook URL to receive incoming messages. Consider using a queue for high-volume outbound SMS to avoid rate limits. # PentaCodes Technical Reference and Integration Documentation # Version 1.0 | Last Updated March 2025 # This document contains technical reference material for common integrations and deployment procedures. ## QuickBooks Online Integration The QuickBooks Online API uses OAuth 2.0 for authentication. You will need to register your application in the Intuit Developer Portal to obtain client credentials. The base URL for the API is https://quickbooks.api.intuit.com/v3/company/{realmId}. Common endpoints include /invoice, /customer, /payment, and /bill. Rate limits apply: 500 requests per minute for production apps. Always implement exponential backoff for 429 responses. ## Stripe Payment Integration Stripe provides both client-side (Stripe.js) and server-side APIs. For PCI compliance, never pass raw card numbers through your server—use Stripe Elements or the Payment Intents API. Webhooks are essential for handling asynchronous events like payment succeeded or subscription renewed. Configure your webhook endpoint to verify signatures using the Stripe-Signature header. ## ShipStation Integration The ShipStation API is REST-based. Authentication uses API key and API secret in the Authorization header. Endpoints cover orders, shipments, carriers, and warehouses. Poll for new orders or use webhooks if available for your plan. Batch operations are supported for bulk label creation. ## Twilio SMS Integration Twilio's REST API requires Account SID and Auth Token. The Messaging API endpoint is /2010-04-01/Accounts/{AccountSid}/Messages.json. For two-way messaging, configure a webhook URL to receive incoming messages. Consider using a queue for high-volume outbound SMS to avoid rate limits. # PentaCodes Technical Reference and Integration Documentation # Version 1.0 | Last Updated March 2025 # This document contains technical reference material for common integrations and deployment procedures. ## QuickBooks Online Integration The QuickBooks Online API uses OAuth 2.0 for authentication. You will need to register your application in the Intuit Developer Portal to obtain client credentials. The base URL for the API is https://quickbooks.api.intuit.com/v3/company/{realmId}. Common endpoints include /invoice, /customer, /payment, and /bill. Rate limits apply: 500 requests per minute for production apps. Always implement exponential backoff for 429 responses. ## Stripe Payment Integration Stripe provides both client-side (Stripe.js) and server-side APIs. For PCI compliance, never pass raw card numbers through your server—use Stripe Elements or the Payment Intents API. Webhooks are essential for handling asynchronous events like payment succeeded or subscription renewed. Configure your webhook endpoint to verify signatures using the Stripe-Signature header. ## ShipStation Integration The ShipStation API is REST-based. Authentication uses API key and API secret in the Authorization header. Endpoints cover orders, shipments, carriers, and warehouses. Poll for new orders or use webhooks if available for your plan. Batch operations are supported for bulk label creation. ## Twilio SMS Integration Twilio's REST API requires Account SID and Auth Token. The Messaging API endpoint is /2010-04-01/Accounts/{AccountSid}/Messages.json. For two-way messaging, configure a webhook URL to receive incoming messages. Consider using a queue for high-volume outbound SMS to avoid rate limits. # PentaCodes Technical Reference and Integration Documentation # Version 1.0 | Last Updated March 2025 # This document contains technical reference material for common integrations and deployment procedures. ## QuickBooks Online Integration The QuickBooks Online API uses OAuth 2.0 for authentication. You will need to register your application in the Intuit Developer Portal to obtain client credentials. The base URL for the API is https://quickbooks.api.intuit.com/v3/company/{realmId}. Common endpoints include /invoice, /customer, /payment, and /bill. Rate limits apply: 500 requests per minute for production apps. Always implement exponential backoff for 429 responses. ## Stripe Payment Integration Stripe provides both client-side (Stripe.js) and server-side APIs. For PCI compliance, never pass raw card numbers through your server—use Stripe Elements or the Payment Intents API. Webhooks are essential for handling asynchronous events like payment succeeded or subscription renewed. Configure your webhook endpoint to verify signatures using the Stripe-Signature header. ## ShipStation Integration The ShipStation API is REST-based. Authentication uses API key and API secret in the Authorization header. Endpoints cover orders, shipments, carriers, and warehouses. Poll for new orders or use webhooks if available for your plan. Batch operations are supported for bulk label creation. ## Twilio SMS Integration Twilio's REST API requires Account SID and Auth Token. The Messaging API endpoint is /2010-04-01/Accounts/{AccountSid}/Messages.json. For two-way messaging, configure a webhook URL to receive incoming messages. Consider using a queue for high-volume outbound SMS to avoid rate limits. # PentaCodes Technical Reference and Integration Documentation # Version 1.0 | Last Updated March 2025 # This document contains technical reference material for common integrations and deployment procedures. ## QuickBooks Online Integration The QuickBooks Online API uses OAuth 2.0 for authentication. You will need to register your application in the Intuit Developer Portal to obtain client credentials. The base URL for the API is https://quickbooks.api.intuit.com/v3/company/{realmId}. Common endpoints include /invoice, /customer, /payment, and /bill. Rate limits apply: 500 requests per minute for production apps. Always implement exponential backoff for 429 responses. ## Stripe Payment Integration Stripe provides both client-side (Stripe.js) and server-side APIs. For PCI compliance, never pass raw card numbers through your server—use Stripe Elements or the Payment Intents API. Webhooks are essential for handling asynchronous events like payment succeeded or subscription renewed. Configure your webhook endpoint to verify signatures using the Stripe-Signature header. ## ShipStation Integration The ShipStation API is REST-based. Authentication uses API key and API secret in the Authorization header. Endpoints cover orders, shipments, carriers, and warehouses. Poll for new orders or use webhooks if available for your plan. Batch operations are supported for bulk label creation. ## Twilio SMS Integration Twilio's REST API requires Account SID and Auth Token. The Messaging API endpoint is /2010-04-01/Accounts/{AccountSid}/Messages.json. For two-way messaging, configure a webhook URL to receive incoming messages. Consider using a queue for high-volume outbound SMS to avoid rate limits. # PentaCodes Technical Reference and Integration Documentation # Version 1.0 | Last Updated March 2025 # This document contains technical reference material for common integrations and deployment procedures. ## QuickBooks Online Integration The QuickBooks Online API uses OAuth 2.0 for authentication. You will need to register your application in the Intuit Developer Portal to obtain client credentials. The base URL for the API is https://quickbooks.api.intuit.com/v3/company/{realmId}. Common endpoints include /invoice, /customer, /payment, and /bill. Rate limits apply: 500 requests per minute for production apps. Always implement exponential backoff for 429 responses. ## Stripe Payment Integration Stripe provides both client-side (Stripe.js) and server-side APIs. For PCI compliance, never pass raw card numbers through your server—use Stripe Elements or the Payment Intents API. Webhooks are essential for handling asynchronous events like payment succeeded or subscription renewed. Configure your webhook endpoint to verify signatures using the Stripe-Signature header. ## ShipStation Integration The ShipStation API is REST-based. Authentication uses API key and API secret in the Authorization header. Endpoints cover orders, shipments, carriers, and warehouses. Poll for new orders or use webhooks if available for your plan. Batch operations are supported for bulk label creation. ## Twilio SMS Integration Twilio's REST API requires Account SID and Auth Token. The Messaging API endpoint is /2010-04-01/Accounts/{AccountSid}/Messages.json. For two-way messaging, configure a webhook URL to receive incoming messages. Consider using a queue for high-volume outbound SMS to avoid rate limits. # PentaCodes Technical Reference and Integration Documentation # Version 1.0 | Last Updated March 2025 # This document contains technical reference material for common integrations and deployment procedures. ## QuickBooks Online Integration The QuickBooks Online API uses OAuth 2.0 for authentication. You will need to register your application in the Intuit Developer Portal to obtain client credentials. The base URL for the API is https://quickbooks.api.intuit.com/v3/company/{realmId}. Common endpoints include /invoice, /customer, /payment, and /bill. Rate limits apply: 500 requests per minute for production apps. Always implement exponential backoff for 429 responses. ## Stripe Payment Integration Stripe provides both client-side (Stripe.js) and server-side APIs. For PCI compliance, never pass raw card numbers through your server—use Stripe Elements or the Payment Intents API. Webhooks are essential for handling asynchronous events like payment succeeded or subscription renewed. Configure your webhook endpoint to verify signatures using the Stripe-Signature header. ## ShipStation Integration The ShipStation API is REST-based. Authentication uses API key and API secret in the Authorization header. Endpoints cover orders, shipments, carriers, and warehouses. Poll for new orders or use webhooks if available for your plan. Batch operations are supported for bulk label creation. ## Twilio SMS Integration Twilio's REST API requires Account SID and Auth Token. The Messaging API endpoint is /2010-04-01/Accounts/{AccountSid}/Messages.json. For two-way messaging, configure a webhook URL to receive incoming messages. Consider using a queue for high-volume outbound SMS to avoid rate limits. # PentaCodes Technical Reference and Integration Documentation # Version 1.0 | Last Updated March 2025 # This document contains technical reference material for common integrations and deployment procedures. ## QuickBooks Online Integration The QuickBooks Online API uses OAuth 2.0 for authentication. You will need to register your application in the Intuit Developer Portal to obtain client credentials. The base URL for the API is https://quickbooks.api.intuit.com/v3/company/{realmId}. Common endpoints include /invoice, /customer, /payment, and /bill. Rate limits apply: 500 requests per minute for production apps. Always implement exponential backoff for 429 responses. ## Stripe Payment Integration Stripe provides both client-side (Stripe.js) and server-side APIs. For PCI compliance, never pass raw card numbers through your server—use Stripe Elements or the Payment Intents API. Webhooks are essential for handling asynchronous events like payment succeeded or subscription renewed. Configure your webhook endpoint to verify signatures using the Stripe-Signature header. ## ShipStation Integration The ShipStation API is REST-based. Authentication uses API key and API secret in the Authorization header. Endpoints cover orders, shipments, carriers, and warehouses. Poll for new orders or use webhooks if available for your plan. Batch operations are supported for bulk label creation. ## Twilio SMS Integration Twilio's REST API requires Account SID and Auth Token. The Messaging API endpoint is /2010-04-01/Accounts/{AccountSid}/Messages.json. For two-way messaging, configure a webhook URL to receive incoming messages. Consider using a queue for high-volume outbound SMS to avoid rate limits. # PentaCodes Technical Reference and Integration Documentation # Version 1.0 | Last Updated March 2025 # This document contains technical reference material for common integrations and deployment procedures. ## QuickBooks Online Integration The QuickBooks Online API uses OAuth 2.0 for authentication. You will need to register your application in the Intuit Developer Portal to obtain client credentials. The base URL for the API is https://quickbooks.api.intuit.com/v3/company/{realmId}. Common endpoints include /invoice, /customer, /payment, and /bill. Rate limits apply: 500 requests per minute for production apps. Always implement exponential backoff for 429 responses. ## Stripe Payment Integration Stripe provides both client-side (Stripe.js) and server-side APIs. For PCI compliance, never pass raw card numbers through your server—use Stripe Elements or the Payment Intents API. Webhooks are essential for handling asynchronous events like payment succeeded or subscription renewed. Configure your webhook endpoint to verify signatures using the Stripe-Signature header. ## ShipStation Integration The ShipStation API is REST-based. Authentication uses API key and API secret in the Authorization header. Endpoints cover orders, shipments, carriers, and warehouses. Poll for new orders or use webhooks if available for your plan. Batch operations are supported for bulk label creation. ## Twilio SMS Integration Twilio's REST API requires Account SID and Auth Token. The Messaging API endpoint is /2010-04-01/Accounts/{AccountSid}/Messages.json. For two-way messaging, configure a webhook URL to receive incoming messages. Consider using a queue for high-volume outbound SMS to avoid rate limits. # PentaCodes Technical Reference and Integration Documentation # Version 1.0 | Last Updated March 2025 # This document contains technical reference material for common integrations and deployment procedures. ## QuickBooks Online Integration The QuickBooks Online API uses OAuth 2.0 for authentication. You will need to register your application in the Intuit Developer Portal to obtain client credentials. The base URL for the API is https://quickbooks.api.intuit.com/v3/company/{realmId}. Common endpoints include /invoice, /customer, /payment, and /bill. Rate limits apply: 500 requests per minute for production apps. Always implement exponential backoff for 429 responses. ## Stripe Payment Integration Stripe provides both client-side (Stripe.js) and server-side APIs. For PCI compliance, never pass raw card numbers through your server—use Stripe Elements or the Payment Intents API. Webhooks are essential for handling asynchronous events like payment succeeded or subscription renewed. Configure your webhook endpoint to verify signatures using the Stripe-Signature header. ## ShipStation Integration The ShipStation API is REST-based. Authentication uses API key and API secret in the Authorization header. Endpoints cover orders, shipments, carriers, and warehouses. Poll for new orders or use webhooks if available for your plan. Batch operations are supported for bulk label creation. ## Twilio SMS Integration Twilio's REST API requires Account SID and Auth Token. The Messaging API endpoint is /2010-04-01/Accounts/{AccountSid}/Messages.json. For two-way messaging, configure a webhook URL to receive incoming messages. Consider using a queue for high-volume outbound SMS to avoid rate limits. # PentaCodes Technical Reference and Integration Documentation # Version 1.0 | Last Updated March 2025 # This document contains technical reference material for common integrations and deployment procedures. ## QuickBooks Online Integration The QuickBooks Online API uses OAuth 2.0 for authentication. You will need to register your application in the Intuit Developer Portal to obtain client credentials. The base URL for the API is https://quickbooks.api.intuit.com/v3/company/{realmId}. Common endpoints include /invoice, /customer, /payment, and /bill. Rate limits apply: 500 requests per minute for production apps. Always implement exponential backoff for 429 responses. ## Stripe Payment Integration Stripe provides both client-side (Stripe.js) and server-side APIs. For PCI compliance, never pass raw card numbers through your server—use Stripe Elements or the Payment Intents API. Webhooks are essential for handling asynchronous events like payment succeeded or subscription renewed. Configure your webhook endpoint to verify signatures using the Stripe-Signature header. ## ShipStation Integration The ShipStation API is REST-based. Authentication uses API key and API secret in the Authorization header. Endpoints cover orders, shipments, carriers, and warehouses. Poll for new orders or use webhooks if available for your plan. Batch operations are supported for bulk label creation. ## Twilio SMS Integration Twilio's REST API requires Account SID and Auth Token. The Messaging API endpoint is /2010-04-01/Accounts/{AccountSid}/Messages.json. For two-way messaging, configure a webhook URL to receive incoming messages. Consider using a queue for high-volume outbound SMS to avoid rate limits. # PentaCodes Technical Reference and Integration Documentation # Version 1.0 | Last Updated March 2025 # This document contains technical reference material for common integrations and deployment procedures. ## QuickBooks Online Integration The QuickBooks Online API uses OAuth 2.0 for authentication. You will need to register your application in the Intuit Developer Portal to obtain client credentials. The base URL for the API is https://quickbooks.api.intuit.com/v3/company/{realmId}. Common endpoints include /invoice, /customer, /payment, and /bill. Rate limits apply: 500 requests per minute for production apps. Always implement exponential backoff for 429 responses. ## Stripe Payment Integration Stripe provides both client-side (Stripe.js) and server-side APIs. For PCI compliance, never pass raw card numbers through your server—use Stripe Elements or the Payment Intents API. Webhooks are essential for handling asynchronous events like payment succeeded or subscription renewed. Configure your webhook endpoint to verify signatures using the Stripe-Signature header. ## ShipStation Integration The ShipStation API is REST-based. Authentication uses API key and API secret in the Authorization header. Endpoints cover orders, shipments, carriers, and warehouses. Poll for new orders or use webhooks if available for your plan. Batch operations are supported for bulk label creation. ## Twilio SMS Integration Twilio's REST API requires Account SID and Auth Token. The Messaging API endpoint is /2010-04-01/Accounts/{AccountSid}/Messages.json. For two-way messaging, configure a webhook URL to receive incoming messages. Consider using a queue for high-volume outbound SMS to avoid rate limits. # PentaCodes Technical Reference and Integration Documentation # Version 1.0 | Last Updated March 2025 # This document contains technical reference material for common integrations and deployment procedures. ## QuickBooks Online Integration The QuickBooks Online API uses OAuth 2.0 for authentication. You will need to register your application in the Intuit Developer Portal to obtain client credentials. The base URL for the API is https://quickbooks.api.intuit.com/v3/company/{realmId}. Common endpoints include /invoice, /customer, /payment, and /bill. Rate limits apply: 500 requests per minute for production apps. Always implement exponential backoff for 429 responses. ## Stripe Payment Integration Stripe provides both client-side (Stripe.js) and server-side APIs. For PCI compliance, never pass raw card numbers through your server—use Stripe Elements or the Payment Intents API. Webhooks are essential for handling asynchronous events like payment succeeded or subscription renewed. Configure your webhook endpoint to verify signatures using the Stripe-Signature header. ## ShipStation Integration The ShipStation API is REST-based. Authentication uses API key and API secret in the Authorization header. Endpoints cover orders, shipments, carriers, and warehouses. Poll for new orders or use webhooks if available for your plan. Batch operations are supported for bulk label creation. ## Twilio SMS Integration Twilio's REST API requires Account SID and Auth Token. The Messaging API endpoint is /2010-04-01/Accounts/{AccountSid}/Messages.json. For two-way messaging, configure a webhook URL to receive incoming messages. Consider using a queue for high-volume outbound SMS to avoid rate limits. # PentaCodes Technical Reference and Integration Documentation # Version 1.0 | Last Updated March 2025 # This document contains technical reference material for common integrations and deployment procedures. ## QuickBooks Online Integration The QuickBooks Online API uses OAuth 2.0 for authentication. You will need to register your application in the Intuit Developer Portal to obtain client credentials. The base URL for the API is https://quickbooks.api.intuit.com/v3/company/{realmId}. Common endpoints include /invoice, /customer, /payment, and /bill. Rate limits apply: 500 requests per minute for production apps. Always implement exponential backoff for 429 responses. ## Stripe Payment Integration Stripe provides both client-side (Stripe.js) and server-side APIs. For PCI compliance, never pass raw card numbers through your server—use Stripe Elements or the Payment Intents API. Webhooks are essential for handling asynchronous events like payment succeeded or subscription renewed. Configure your webhook endpoint to verify signatures using the Stripe-Signature header. ## ShipStation Integration The ShipStation API is REST-based. Authentication uses API key and API secret in the Authorization header. Endpoints cover orders, shipments, carriers, and warehouses. Poll for new orders or use webhooks if available for your plan. Batch operations are supported for bulk label creation. ## Twilio SMS Integration Twilio's REST API requires Account SID and Auth Token. The Messaging API endpoint is /2010-04-01/Accounts/{AccountSid}/Messages.json. For two-way messaging, configure a webhook URL to receive incoming messages. Consider using a queue for high-volume outbound SMS to avoid rate limits. # PentaCodes Technical Reference and Integration Documentation # Version 1.0 | Last Updated March 2025 # This document contains technical reference material for common integrations and deployment procedures. ## QuickBooks Online Integration The QuickBooks Online API uses OAuth 2.0 for authentication. You will need to register your application in the Intuit Developer Portal to obtain client credentials. The base URL for the API is https://quickbooks.api.intuit.com/v3/company/{realmId}. Common endpoints include /invoice, /customer, /payment, and /bill. Rate limits apply: 500 requests per minute for production apps. Always implement exponential backoff for 429 responses. ## Stripe Payment Integration Stripe provides both client-side (Stripe.js) and server-side APIs. For PCI compliance, never pass raw card numbers through your server—use Stripe Elements or the Payment Intents API. Webhooks are essential for handling asynchronous events like payment succeeded or subscription renewed. Configure your webhook endpoint to verify signatures using the Stripe-Signature header. ## ShipStation Integration The ShipStation API is REST-based. Authentication uses API key and API secret in the Authorization header. Endpoints cover orders, shipments, carriers, and warehouses. Poll for new orders or use webhooks if available for your plan. Batch operations are supported for bulk label creation. ## Twilio SMS Integration Twilio's REST API requires Account SID and Auth Token. The Messaging API endpoint is /2010-04-01/Accounts/{AccountSid}/Messages.json. For two-way messaging, configure a webhook URL to receive incoming messages. Consider using a queue for high-volume outbound SMS to avoid rate limits. # PentaCodes Technical Reference and Integration Documentation # Version 1.0 | Last Updated March 2025 # This document contains technical reference material for common integrations and deployment procedures. ## QuickBooks Online Integration The QuickBooks Online API uses OAuth 2.0 for authentication. You will need to register your application in the Intuit Developer Portal to obtain client credentials. The base URL for the API is https://quickbooks.api.intuit.com/v3/company/{realmId}. Common endpoints include /invoice, /customer, /payment, and /bill. Rate limits apply: 500 requests per minute for production apps. Always implement exponential backoff for 429 responses. ## Stripe Payment Integration Stripe provides both client-side (Stripe.js) and server-side APIs. For PCI compliance, never pass raw card numbers through your server—use Stripe Elements or the Payment Intents API. Webhooks are essential for handling asynchronous events like payment succeeded or subscription renewed. Configure your webhook endpoint to verify signatures using the Stripe-Signature header. ## ShipStation Integration The ShipStation API is REST-based. Authentication uses API key and API secret in the Authorization header. Endpoints cover orders, shipments, carriers, and warehouses. Poll for new orders or use webhooks if available for your plan. Batch operations are supported for bulk label creation. ## Twilio SMS Integration Twilio's REST API requires Account SID and Auth Token. The Messaging API endpoint is /2010-04-01/Accounts/{AccountSid}/Messages.json. For two-way messaging, configure a webhook URL to receive incoming messages. Consider using a queue for high-volume outbound SMS to avoid rate limits. # PentaCodes Technical Reference and Integration Documentation # Version 1.0 | Last Updated March 2025 # This document contains technical reference material for common integrations and deployment procedures. ## QuickBooks Online Integration The QuickBooks Online API uses OAuth 2.0 for authentication. You will need to register your application in the Intuit Developer Portal to obtain client credentials. The base URL for the API is https://quickbooks.api.intuit.com/v3/company/{realmId}. Common endpoints include /invoice, /customer, /payment, and /bill. Rate limits apply: 500 requests per minute for production apps. Always implement exponential backoff for 429 responses. ## Stripe Payment Integration Stripe provides both client-side (Stripe.js) and server-side APIs. For PCI compliance, never pass raw card numbers through your server—use Stripe Elements or the Payment Intents API. Webhooks are essential for handling asynchronous events like payment succeeded or subscription renewed. Configure your webhook endpoint to verify signatures using the Stripe-Signature header. ## ShipStation Integration The ShipStation API is REST-based. Authentication uses API key and API secret in the Authorization header. Endpoints cover orders, shipments, carriers, and warehouses. Poll for new orders or use webhooks if available for your plan. Batch operations are supported for bulk label creation. ## Twilio SMS Integration Twilio's REST API requires Account SID and Auth Token. The Messaging API endpoint is /2010-04-01/Accounts/{AccountSid}/Messages.json. For two-way messaging, configure a webhook URL to receive incoming messages. Consider using a queue for high-volume outbound SMS to avoid rate limits. # PentaCodes Technical Reference and Integration Documentation # Version 1.0 | Last Updated March 2025 # This document contains technical reference material for common integrations and deployment procedures. ## QuickBooks Online Integration The QuickBooks Online API uses OAuth 2.0 for authentication. You will need to register your application in the Intuit Developer Portal to obtain client credentials. The base URL for the API is https://quickbooks.api.intuit.com/v3/company/{realmId}. Common endpoints include /invoice, /customer, /payment, and /bill. Rate limits apply: 500 requests per minute for production apps. Always implement exponential backoff for 429 responses. ## Stripe Payment Integration Stripe provides both client-side (Stripe.js) and server-side APIs. For PCI compliance, never pass raw card numbers through your server—use Stripe Elements or the Payment Intents API. Webhooks are essential for handling asynchronous events like payment succeeded or subscription renewed. Configure your webhook endpoint to verify signatures using the Stripe-Signature header. ## ShipStation Integration The ShipStation API is REST-based. Authentication uses API key and API secret in the Authorization header. Endpoints cover orders, shipments, carriers, and warehouses. Poll for new orders or use webhooks if available for your plan. Batch operations are supported for bulk label creation. ## Twilio SMS Integration Twilio's REST API requires Account SID and Auth Token. The Messaging API endpoint is /2010-04-01/Accounts/{AccountSid}/Messages.json. For two-way messaging, configure a webhook URL to receive incoming messages. Consider using a queue for high-volume outbound SMS to avoid rate limits. # PentaCodes Technical Reference and Integration Documentation # Version 1.0 | Last Updated March 2025 # This document contains technical reference material for common integrations and deployment procedures. ## QuickBooks Online Integration The QuickBooks Online API uses OAuth 2.0 for authentication. You will need to register your application in the Intuit Developer Portal to obtain client credentials. The base URL for the API is https://quickbooks.api.intuit.com/v3/company/{realmId}. Common endpoints include /invoice, /customer, /payment, and /bill. Rate limits apply: 500 requests per minute for production apps. Always implement exponential backoff for 429 responses. ## Stripe Payment Integration Stripe provides both client-side (Stripe.js) and server-side APIs. For PCI compliance, never pass raw card numbers through your server—use Stripe Elements or the Payment Intents API. Webhooks are essential for handling asynchronous events like payment succeeded or subscription renewed. Configure your webhook endpoint to verify signatures using the Stripe-Signature header. ## ShipStation Integration The ShipStation API is REST-based. Authentication uses API key and API secret in the Authorization header. Endpoints cover orders, shipments, carriers, and warehouses. Poll for new orders or use webhooks if available for your plan. Batch operations are supported for bulk label creation. ## Twilio SMS Integration Twilio's REST API requires Account SID and Auth Token. The Messaging API endpoint is /2010-04-01/Accounts/{AccountSid}/Messages.json. For two-way messaging, configure a webhook URL to receive incoming messages. Consider using a queue for high-volume outbound SMS to avoid rate limits. # PentaCodes Technical Reference and Integration Documentation # Version 1.0 | Last Updated March 2025 # This document contains technical reference material for common integrations and deployment procedures. ## QuickBooks Online Integration The QuickBooks Online API uses OAuth 2.0 for authentication. You will need to register your application in the Intuit Developer Portal to obtain client credentials. The base URL for the API is https://quickbooks.api.intuit.com/v3/company/{realmId}. Common endpoints include /invoice, /customer, /payment, and /bill. Rate limits apply: 500 requests per minute for production apps. Always implement exponential backoff for 429 responses. ## Stripe Payment Integration Stripe provides both client-side (Stripe.js) and server-side APIs. For PCI compliance, never pass raw card numbers through your server—use Stripe Elements or the Payment Intents API. Webhooks are essential for handling asynchronous events like payment succeeded or subscription renewed. Configure your webhook endpoint to verify signatures using the Stripe-Signature header. ## ShipStation Integration The ShipStation API is REST-based. Authentication uses API key and API secret in the Authorization header. Endpoints cover orders, shipments, carriers, and warehouses. Poll for new orders or use webhooks if available for your plan. Batch operations are supported for bulk label creation. ## Twilio SMS Integration Twilio's REST API requires Account SID and Auth Token. The Messaging API endpoint is /2010-04-01/Accounts/{AccountSid}/Messages.json. For two-way messaging, configure a webhook URL to receive incoming messages. Consider using a queue for high-volume outbound SMS to avoid rate limits. # PentaCodes Technical Reference and Integration Documentation # Version 1.0 | Last Updated March 2025 # This document contains technical reference material for common integrations and deployment procedures. ## QuickBooks Online Integration The QuickBooks Online API uses OAuth 2.0 for authentication. You will need to register your application in the Intuit Developer Portal to obtain client credentials. The base URL for the API is https://quickbooks.api.intuit.com/v3/company/{realmId}. Common endpoints include /invoice, /customer, /payment, and /bill. Rate limits apply: 500 requests per minute for production apps. Always implement exponential backoff for 429 responses. ## Stripe Payment Integration Stripe provides both client-side (Stripe.js) and server-side APIs. For PCI compliance, never pass raw card numbers through your server—use Stripe Elements or the Payment Intents API. Webhooks are essential for handling asynchronous events like payment succeeded or subscription renewed. Configure your webhook endpoint to verify signatures using the Stripe-Signature header. ## ShipStation Integration The ShipStation API is REST-based. Authentication uses API key and API secret in the Authorization header. Endpoints cover orders, shipments, carriers, and warehouses. Poll for new orders or use webhooks if available for your plan. Batch operations are supported for bulk label creation. ## Twilio SMS Integration Twilio's REST API requires Account SID and Auth Token. The Messaging API endpoint is /2010-04-01/Accounts/{AccountSid}/Messages.json. For two-way messaging, configure a webhook URL to receive incoming messages. Consider using a queue for high-volume outbound SMS to avoid rate limits. # PentaCodes Technical Reference and Integration Documentation # Version 1.0 | Last Updated March 2025 # This document contains technical reference material for common integrations and deployment procedures. ## QuickBooks Online Integration The QuickBooks Online API uses OAuth 2.0 for authentication. You will need to register your application in the Intuit Developer Portal to obtain client credentials. The base URL for the API is https://quickbooks.api.intuit.com/v3/company/{realmId}. Common endpoints include /invoice, /customer, /payment, and /bill. Rate limits apply: 500 requests per minute for production apps. Always implement exponential backoff for 429 responses. ## Stripe Payment Integration Stripe provides both client-side (Stripe.js) and server-side APIs. For PCI compliance, never pass raw card numbers through your server—use Stripe Elements or the Payment Intents API. Webhooks are essential for handling asynchronous events like payment succeeded or subscription renewed. Configure your webhook endpoint to verify signatures using the Stripe-Signature header. ## ShipStation Integration The ShipStation API is REST-based. Authentication uses API key and API secret in the Authorization header. Endpoints cover orders, shipments, carriers, and warehouses. Poll for new orders or use webhooks if available for your plan. Batch operations are supported for bulk label creation. ## Twilio SMS Integration Twilio's REST API requires Account SID and Auth Token. The Messaging API endpoint is /2010-04-01/Accounts/{AccountSid}/Messages.json. For two-way messaging, configure a webhook URL to receive incoming messages. Consider using a queue for high-volume outbound SMS to avoid rate limits. # PentaCodes Technical Reference and Integration Documentation # Version 1.0 | Last Updated March 2025 # This document contains technical reference material for common integrations and deployment procedures. ## QuickBooks Online Integration The QuickBooks Online API uses OAuth 2.0 for authentication. You will need to register your application in the Intuit Developer Portal to obtain client credentials. The base URL for the API is https://quickbooks.api.intuit.com/v3/company/{realmId}. Common endpoints include /invoice, /customer, /payment, and /bill. Rate limits apply: 500 requests per minute for production apps. Always implement exponential backoff for 429 responses. ## Stripe Payment Integration Stripe provides both client-side (Stripe.js) and server-side APIs. For PCI compliance, never pass raw card numbers through your server—use Stripe Elements or the Payment Intents API. Webhooks are essential for handling asynchronous events like payment succeeded or subscription renewed. Configure your webhook endpoint to verify signatures using the Stripe-Signature header. ## ShipStation Integration The ShipStation API is REST-based. Authentication uses API key and API secret in the Authorization header. Endpoints cover orders, shipments, carriers, and warehouses. Poll for new orders or use webhooks if available for your plan. Batch operations are supported for bulk label creation. ## Twilio SMS Integration Twilio's REST API requires Account SID and Auth Token. The Messaging API endpoint is /2010-04-01/Accounts/{AccountSid}/Messages.json. For two-way messaging, configure a webhook URL to receive incoming messages. Consider using a queue for high-volume outbound SMS to avoid rate limits. # PentaCodes Technical Reference and Integration Documentation # Version 1.0 | Last Updated March 2025 # This document contains technical reference material for common integrations and deployment procedures. ## QuickBooks Online Integration The QuickBooks Online API uses OAuth 2.0 for authentication. You will need to register your application in the Intuit Developer Portal to obtain client credentials. The base URL for the API is https://quickbooks.api.intuit.com/v3/company/{realmId}. Common endpoints include /invoice, /customer, /payment, and /bill. Rate limits apply: 500 requests per minute for production apps. Always implement exponential backoff for 429 responses. ## Stripe Payment Integration Stripe provides both client-side (Stripe.js) and server-side APIs. For PCI compliance, never pass raw card numbers through your server—use Stripe Elements or the Payment Intents API. Webhooks are essential for handling asynchronous events like payment succeeded or subscription renewed. Configure your webhook endpoint to verify signatures using the Stripe-Signature header. ## ShipStation Integration The ShipStation API is REST-based. Authentication uses API key and API secret in the Authorization header. Endpoints cover orders, shipments, carriers, and warehouses. Poll for new orders or use webhooks if available for your plan. Batch operations are supported for bulk label creation. ## Twilio SMS Integration Twilio's REST API requires Account SID and Auth Token. The Messaging API endpoint is /2010-04-01/Accounts/{AccountSid}/Messages.json. For two-way messaging, configure a webhook URL to receive incoming messages. Consider using a queue for high-volume outbound SMS to avoid rate limits. # PentaCodes Technical Reference and Integration Documentation # Version 1.0 | Last Updated March 2025 # This document contains technical reference material for common integrations and deployment procedures. ## QuickBooks Online Integration The QuickBooks Online API uses OAuth 2.0 for authentication. You will need to register your application in the Intuit Developer Portal to obtain client credentials. The base URL for the API is https://quickbooks.api.intuit.com/v3/company/{realmId}. Common endpoints include /invoice, /customer, /payment, and /bill. Rate limits apply: 500 requests per minute for production apps. Always implement exponential backoff for 429 responses. ## Stripe Payment Integration Stripe provides both client-side (Stripe.js) and server-side APIs. For PCI compliance, never pass raw card numbers through your server—use Stripe Elements or the Payment Intents API. Webhooks are essential for handling asynchronous events like payment succeeded or subscription renewed. Configure your webhook endpoint to verify signatures using the Stripe-Signature header. ## ShipStation Integration The ShipStation API is REST-based. Authentication uses API key and API secret in the Authorization header. Endpoints cover orders, shipments, carriers, and warehouses. Poll for new orders or use webhooks if available for your plan. Batch operations are supported for bulk label creation. ## Twilio SMS Integration Twilio's REST API requires Account SID and Auth Token. The Messaging API endpoint is /2010-04-01/Accounts/{AccountSid}/Messages.json. For two-way messaging, configure a webhook URL to receive incoming messages. Consider using a queue for high-volume outbound SMS to avoid rate limits. # PentaCodes Technical Reference and Integration Documentation # Version 1.0 | Last Updated March 2025 # This document contains technical reference material for common integrations and deployment procedures. ## QuickBooks Online Integration The QuickBooks Online API uses OAuth 2.0 for authentication. You will need to register your application in the Intuit Developer Portal to obtain client credentials. The base URL for the API is https://quickbooks.api.intuit.com/v3/company/{realmId}. Common endpoints include /invoice, /customer, /payment, and /bill. Rate limits apply: 500 requests per minute for production apps. Always implement exponential backoff for 429 responses. ## Stripe Payment Integration Stripe provides both client-side (Stripe.js) and server-side APIs. For PCI compliance, never pass raw card numbers through your server—use Stripe Elements or the Payment Intents API. Webhooks are essential for handling asynchronous events like payment succeeded or subscription renewed. Configure your webhook endpoint to verify signatures using the Stripe-Signature header. ## ShipStation Integration The ShipStation API is REST-based. Authentication uses API key and API secret in the Authorization header. Endpoints cover orders, shipments, carriers, and warehouses. Poll for new orders or use webhooks if available for your plan. Batch operations are supported for bulk label creation. ## Twilio SMS Integration Twilio's REST API requires Account SID and Auth Token. The Messaging API endpoint is /2010-04-01/Accounts/{AccountSid}/Messages.json. For two-way messaging, configure a webhook URL to receive incoming messages. Consider using a queue for high-volume outbound SMS to avoid rate limits. # PentaCodes Technical Reference and Integration Documentation # Version 1.0 | Last Updated March 2025 # This document contains technical reference material for common integrations and deployment procedures. ## QuickBooks Online Integration The QuickBooks Online API uses OAuth 2.0 for authentication. You will need to register your application in the Intuit Developer Portal to obtain client credentials. The base URL for the API is https://quickbooks.api.intuit.com/v3/company/{realmId}. Common endpoints include /invoice, /customer, /payment, and /bill. Rate limits apply: 500 requests per minute for production apps. Always implement exponential backoff for 429 responses. ## Stripe Payment Integration Stripe provides both client-side (Stripe.js) and server-side APIs. For PCI compliance, never pass raw card numbers through your server—use Stripe Elements or the Payment Intents API. Webhooks are essential for handling asynchronous events like payment succeeded or subscription renewed. Configure your webhook endpoint to verify signatures using the Stripe-Signature header. ## ShipStation Integration The ShipStation API is REST-based. Authentication uses API key and API secret in the Authorization header. Endpoints cover orders, shipments, carriers, and warehouses. Poll for new orders or use webhooks if available for your plan. Batch operations are supported for bulk label creation. ## Twilio SMS Integration Twilio's REST API requires Account SID and Auth Token. The Messaging API endpoint is /2010-04-01/Accounts/{AccountSid}/Messages.json. For two-way messaging, configure a webhook URL to receive incoming messages. Consider using a queue for high-volume outbound SMS to avoid rate limits. # PentaCodes Technical Reference and Integration Documentation # Version 1.0 | Last Updated March 2025 # This document contains technical reference material for common integrations and deployment procedures. ## QuickBooks Online Integration The QuickBooks Online API uses OAuth 2.0 for authentication. You will need to register your application in the Intuit Developer Portal to obtain client credentials. The base URL for the API is https://quickbooks.api.intuit.com/v3/company/{realmId}. Common endpoints include /invoice, /customer, /payment, and /bill. Rate limits apply: 500 requests per minute for production apps. Always implement exponential backoff for 429 responses. ## Stripe Payment Integration Stripe provides both client-side (Stripe.js) and server-side APIs. For PCI compliance, never pass raw card numbers through your server—use Stripe Elements or the Payment Intents API. Webhooks are essential for handling asynchronous events like payment succeeded or subscription renewed. Configure your webhook endpoint to verify signatures using the Stripe-Signature header. ## ShipStation Integration The ShipStation API is REST-based. Authentication uses API key and API secret in the Authorization header. Endpoints cover orders, shipments, carriers, and warehouses. Poll for new orders or use webhooks if available for your plan. Batch operations are supported for bulk label creation. ## Twilio SMS Integration Twilio's REST API requires Account SID and Auth Token. The Messaging API endpoint is /2010-04-01/Accounts/{AccountSid}/Messages.json. For two-way messaging, configure a webhook URL to receive incoming messages. Consider using a queue for high-volume outbound SMS to avoid rate limits. # PentaCodes Technical Reference and Integration Documentation # Version 1.0 | Last Updated March 2025 # This document contains technical reference material for common integrations and deployment procedures. ## QuickBooks Online Integration The QuickBooks Online API uses OAuth 2.0 for authentication. You will need to register your application in the Intuit Developer Portal to obtain client credentials. The base URL for the API is https://quickbooks.api.intuit.com/v3/company/{realmId}. Common endpoints include /invoice, /customer, /payment, and /bill. Rate limits apply: 500 requests per minute for production apps. Always implement exponential backoff for 429 responses. ## Stripe Payment Integration Stripe provides both client-side (Stripe.js) and server-side APIs. For PCI compliance, never pass raw card numbers through your server—use Stripe Elements or the Payment Intents API. Webhooks are essential for handling asynchronous events like payment succeeded or subscription renewed. Configure your webhook endpoint to verify signatures using the Stripe-Signature header. ## ShipStation Integration The ShipStation API is REST-based. Authentication uses API key and API secret in the Authorization header. Endpoints cover orders, shipments, carriers, and warehouses. Poll for new orders or use webhooks if available for your plan. Batch operations are supported for bulk label creation. ## Twilio SMS Integration Twilio's REST API requires Account SID and Auth Token. The Messaging API endpoint is /2010-04-01/Accounts/{AccountSid}/Messages.json. For two-way messaging, configure a webhook URL to receive incoming messages. Consider using a queue for high-volume outbound SMS to avoid rate limits. # PentaCodes Technical Reference and Integration Documentation # Version 1.0 | Last Updated March 2025 # This document contains technical reference material for common integrations and deployment procedures. ## QuickBooks Online Integration The QuickBooks Online API uses OAuth 2.0 for authentication. You will need to register your application in the Intuit Developer Portal to obtain client credentials. The base URL for the API is https://quickbooks.api.intuit.com/v3/company/{realmId}. Common endpoints include /invoice, /customer, /payment, and /bill. Rate limits apply: 500 requests per minute for production apps. Always implement exponential backoff for 429 responses. ## Stripe Payment Integration Stripe provides both client-side (Stripe.js) and server-side APIs. For PCI compliance, never pass raw card numbers through your server—use Stripe Elements or the Payment Intents API. Webhooks are essential for handling asynchronous events like payment succeeded or subscription renewed. Configure your webhook endpoint to verify signatures using the Stripe-Signature header. ## ShipStation Integration The ShipStation API is REST-based. Authentication uses API key and API secret in the Authorization header. Endpoints cover orders, shipments, carriers, and warehouses. Poll for new orders or use webhooks if available for your plan. Batch operations are supported for bulk label creation. ## Twilio SMS Integration Twilio's REST API requires Account SID and Auth Token. The Messaging API endpoint is /2010-04-01/Accounts/{AccountSid}/Messages.json. For two-way messaging, configure a webhook URL to receive incoming messages. Consider using a queue for high-volume outbound SMS to avoid rate limits. # PentaCodes Technical Reference and Integration Documentation # Version 1.0 | Last Updated March 2025 # This document contains technical reference material for common integrations and deployment procedures. ## QuickBooks Online Integration The QuickBooks Online API uses OAuth 2.0 for authentication. You will need to register your application in the Intuit Developer Portal to obtain client credentials. The base URL for the API is https://quickbooks.api.intuit.com/v3/company/{realmId}. Common endpoints include /invoice, /customer, /payment, and /bill. Rate limits apply: 500 requests per minute for production apps. Always implement exponential backoff for 429 responses. ## Stripe Payment Integration Stripe provides both client-side (Stripe.js) and server-side APIs. For PCI compliance, never pass raw card numbers through your server—use Stripe Elements or the Payment Intents API. Webhooks are essential for handling asynchronous events like payment succeeded or subscription renewed. Configure your webhook endpoint to verify signatures using the Stripe-Signature header. ## ShipStation Integration The ShipStation API is REST-based. Authentication uses API key and API secret in the Authorization header. Endpoints cover orders, shipments, carriers, and warehouses. Poll for new orders or use webhooks if available for your plan. Batch operations are supported for bulk label creation. ## Twilio SMS Integration Twilio's REST API requires Account SID and Auth Token. The Messaging API endpoint is /2010-04-01/Accounts/{AccountSid}/Messages.json. For two-way messaging, configure a webhook URL to receive incoming messages. Consider using a queue for high-volume outbound SMS to avoid rate limits. # PentaCodes Technical Reference and Integration Documentation # Version 1.0 | Last Updated March 2025 # This document contains technical reference material for common integrations and deployment procedures. ## QuickBooks Online Integration The QuickBooks Online API uses OAuth 2.0 for authentication. You will need to register your application in the Intuit Developer Portal to obtain client credentials. The base URL for the API is https://quickbooks.api.intuit.com/v3/company/{realmId}. Common endpoints include /invoice, /customer, /payment, and /bill. Rate limits apply: 500 requests per minute for production apps. Always implement exponential backoff for 429 responses. ## Stripe Payment Integration Stripe provides both client-side (Stripe.js) and server-side APIs. For PCI compliance, never pass raw card numbers through your server—use Stripe Elements or the Payment Intents API. Webhooks are essential for handling asynchronous events like payment succeeded or subscription renewed. Configure your webhook endpoint to verify signatures using the Stripe-Signature header. ## ShipStation Integration The ShipStation API is REST-based. Authentication uses API key and API secret in the Authorization header. Endpoints cover orders, shipments, carriers, and warehouses. Poll for new orders or use webhooks if available for your plan. Batch operations are supported for bulk label creation. ## Twilio SMS Integration Twilio's REST API requires Account SID and Auth Token. The Messaging API endpoint is /2010-04-01/Accounts/{AccountSid}/Messages.json. For two-way messaging, configure a webhook URL to receive incoming messages. Consider using a queue for high-volume outbound SMS to avoid rate limits. # PentaCodes Technical Reference and Integration Documentation # Version 1.0 | Last Updated March 2025 # This document contains technical reference material for common integrations and deployment procedures. ## QuickBooks Online Integration The QuickBooks Online API uses OAuth 2.0 for authentication. You will need to register your application in the Intuit Developer Portal to obtain client credentials. The base URL for the API is https://quickbooks.api.intuit.com/v3/company/{realmId}. Common endpoints include /invoice, /customer, /payment, and /bill. Rate limits apply: 500 requests per minute for production apps. Always implement exponential backoff for 429 responses. ## Stripe Payment Integration Stripe provides both client-side (Stripe.js) and server-side APIs. For PCI compliance, never pass raw card numbers through your server—use Stripe Elements or the Payment Intents API. Webhooks are essential for handling asynchronous events like payment succeeded or subscription renewed. Configure your webhook endpoint to verify signatures using the Stripe-Signature header. ## ShipStation Integration The ShipStation API is REST-based. Authentication uses API key and API secret in the Authorization header. Endpoints cover orders, shipments, carriers, and warehouses. Poll for new orders or use webhooks if available for your plan. Batch operations are supported for bulk label creation. ## Twilio SMS Integration Twilio's REST API requires Account SID and Auth Token. The Messaging API endpoint is /2010-04-01/Accounts/{AccountSid}/Messages.json. For two-way messaging, configure a webhook URL to receive incoming messages. Consider using a queue for high-volume outbound SMS to avoid rate limits. # PentaCodes Technical Reference and Integration Documentation # Version 1.0 | Last Updated March 2025 # This document contains technical reference material for common integrations and deployment procedures. ## QuickBooks Online Integration The QuickBooks Online API uses OAuth 2.0 for authentication. You will need to register your application in the Intuit Developer Portal to obtain client credentials. The base URL for the API is https://quickbooks.api.intuit.com/v3/company/{realmId}. Common endpoints include /invoice, /customer, /payment, and /bill. Rate limits apply: 500 requests per minute for production apps. Always implement exponential backoff for 429 responses. ## Stripe Payment Integration Stripe provides both client-side (Stripe.js) and server-side APIs. For PCI compliance, never pass raw card numbers through your server—use Stripe Elements or the Payment Intents API. Webhooks are essential for handling asynchronous events like payment succeeded or subscription renewed. Configure your webhook endpoint to verify signatures using the Stripe-Signature header. ## ShipStation Integration The ShipStation API is REST-based. Authentication uses API key and API secret in the Authorization header. Endpoints cover orders, shipments, carriers, and warehouses. Poll for new orders or use webhooks if available for your plan. Batch operations are supported for bulk label creation. ## Twilio SMS Integration Twilio's REST API requires Account SID and Auth Token. The Messaging API endpoint is /2010-04-01/Accounts/{AccountSid}/Messages.json. For two-way messaging, configure a webhook URL to receive incoming messages. Consider using a queue for high-volume outbound SMS to avoid rate limits. # PentaCodes Technical Reference and Integration Documentation # Version 1.0 | Last Updated March 2025 # This document contains technical reference material for common integrations and deployment procedures. ## QuickBooks Online Integration The QuickBooks Online API uses OAuth 2.0 for authentication. You will need to register your application in the Intuit Developer Portal to obtain client credentials. The base URL for the API is https://quickbooks.api.intuit.com/v3/company/{realmId}. Common endpoints include /invoice, /customer, /payment, and /bill. Rate limits apply: 500 requests per minute for production apps. Always implement exponential backoff for 429 responses. ## Stripe Payment Integration Stripe provides both client-side (Stripe.js) and server-side APIs. For PCI compliance, never pass raw card numbers through your server—use Stripe Elements or the Payment Intents API. Webhooks are essential for handling asynchronous events like payment succeeded or subscription renewed. Configure your webhook endpoint to verify signatures using the Stripe-Signature header. ## ShipStation Integration The ShipStation API is REST-based. Authentication uses API key and API secret in the Authorization header. Endpoints cover orders, shipments, carriers, and warehouses. Poll for new orders or use webhooks if available for your plan. Batch operations are supported for bulk label creation. ## Twilio SMS Integration Twilio's REST API requires Account SID and Auth Token. The Messaging API endpoint is /2010-04-01/Accounts/{AccountSid}/Messages.json. For two-way messaging, configure a webhook URL to receive incoming messages. Consider using a queue for high-volume outbound SMS to avoid rate limits. # PentaCodes Technical Reference and Integration Documentation # Version 1.0 | Last Updated March 2025 # This document contains technical reference material for common integrations and deployment procedures. ## QuickBooks Online Integration The QuickBooks Online API uses OAuth 2.0 for authentication. You will need to register your application in the Intuit Developer Portal to obtain client credentials. The base URL for the API is https://quickbooks.api.intuit.com/v3/company/{realmId}. Common endpoints include /invoice, /customer, /payment, and /bill. Rate limits apply: 500 requests per minute for production apps. Always implement exponential backoff for 429 responses. ## Stripe Payment Integration Stripe provides both client-side (Stripe.js) and server-side APIs. For PCI compliance, never pass raw card numbers through your server—use Stripe Elements or the Payment Intents API. Webhooks are essential for handling asynchronous events like payment succeeded or subscription renewed. Configure your webhook endpoint to verify signatures using the Stripe-Signature header. ## ShipStation Integration The ShipStation API is REST-based. Authentication uses API key and API secret in the Authorization header. Endpoints cover orders, shipments, carriers, and warehouses. Poll for new orders or use webhooks if available for your plan. Batch operations are supported for bulk label creation. ## Twilio SMS Integration Twilio's REST API requires Account SID and Auth Token. The Messaging API endpoint is /2010-04-01/Accounts/{AccountSid}/Messages.json. For two-way messaging, configure a webhook URL to receive incoming messages. Consider using a queue for high-volume outbound SMS to avoid rate limits. # PentaCodes Technical Reference and Integration Documentation # Version 1.0 | Last Updated March 2025 # This document contains technical reference material for common integrations and deployment procedures. ## QuickBooks Online Integration The QuickBooks Online API uses OAuth 2.0 for authentication. You will need to register your application in the Intuit Developer Portal to obtain client credentials. The base URL for the API is https://quickbooks.api.intuit.com/v3/company/{realmId}. Common endpoints include /invoice, /customer, /payment, and /bill. Rate limits apply: 500 requests per minute for production apps. Always implement exponential backoff for 429 responses. ## Stripe Payment Integration Stripe provides both client-side (Stripe.js) and server-side APIs. For PCI compliance, never pass raw card numbers through your server—use Stripe Elements or the Payment Intents API. Webhooks are essential for handling asynchronous events like payment succeeded or subscription renewed. Configure your webhook endpoint to verify signatures using the Stripe-Signature header. ## ShipStation Integration The ShipStation API is REST-based. Authentication uses API key and API secret in the Authorization header. Endpoints cover orders, shipments, carriers, and warehouses. Poll for new orders or use webhooks if available for your plan. Batch operations are supported for bulk label creation. ## Twilio SMS Integration Twilio's REST API requires Account SID and Auth Token. The Messaging API endpoint is /2010-04-01/Accounts/{AccountSid}/Messages.json. For two-way messaging, configure a webhook URL to receive incoming messages. Consider using a queue for high-volume outbound SMS to avoid rate limits. # PentaCodes Technical Reference and Integration Documentation # Version 1.0 | Last Updated March 2025 # This document contains technical reference material for common integrations and deployment procedures. ## QuickBooks Online Integration The QuickBooks Online API uses OAuth 2.0 for authentication. You will need to register your application in the Intuit Developer Portal to obtain client credentials. The base URL for the API is https://quickbooks.api.intuit.com/v3/company/{realmId}. Common endpoints include /invoice, /customer, /payment, and /bill. Rate limits apply: 500 requests per minute for production apps. Always implement exponential backoff for 429 responses. ## Stripe Payment Integration Stripe provides both client-side (Stripe.js) and server-side APIs. For PCI compliance, never pass raw card numbers through your server—use Stripe Elements or the Payment Intents API. Webhooks are essential for handling asynchronous events like payment succeeded or subscription renewed. Configure your webhook endpoint to verify signatures using the Stripe-Signature header. ## ShipStation Integration The ShipStation API is REST-based. Authentication uses API key and API secret in the Authorization header. Endpoints cover orders, shipments, carriers, and warehouses. Poll for new orders or use webhooks if available for your plan. Batch operations are supported for bulk label creation. ## Twilio SMS Integration Twilio's REST API requires Account SID and Auth Token. The Messaging API endpoint is /2010-04-01/Accounts/{AccountSid}/Messages.json. For two-way messaging, configure a webhook URL to receive incoming messages. Consider using a queue for high-volume outbound SMS to avoid rate limits. # PentaCodes Technical Reference and Integration Documentation # Version 1.0 | Last Updated March 2025 # This document contains technical reference material for common integrations and deployment procedures. ## QuickBooks Online Integration The QuickBooks Online API uses OAuth 2.0 for authentication. You will need to register your application in the Intuit Developer Portal to obtain client credentials. The base URL for the API is https://quickbooks.api.intuit.com/v3/company/{realmId}. Common endpoints include /invoice, /customer, /payment, and /bill. Rate limits apply: 500 requests per minute for production apps. Always implement exponential backoff for 429 responses. ## Stripe Payment Integration Stripe provides both client-side (Stripe.js) and server-side APIs. For PCI compliance, never pass raw card numbers through your server—use Stripe Elements or the Payment Intents API. Webhooks are essential for handling asynchronous events like payment succeeded or subscription renewed. Configure your webhook endpoint to verify signatures using the Stripe-Signature header. ## ShipStation Integration The ShipStation API is REST-based. Authentication uses API key and API secret in the Authorization header. Endpoints cover orders, shipments, carriers, and warehouses. Poll for new orders or use webhooks if available for your plan. Batch operations are supported for bulk label creation. ## Twilio SMS Integration Twilio's REST API requires Account SID and Auth Token. The Messaging API endpoint is /2010-04-01/Accounts/{AccountSid}/Messages.json. For two-way messaging, configure a webhook URL to receive incoming messages. Consider using a queue for high-volume outbound SMS to avoid rate limits. # PentaCodes Technical Reference and Integration Documentation # Version 1.0 | Last Updated March 2025 # This document contains technical reference material for common integrations and deployment procedures. ## QuickBooks Online Integration The QuickBooks Online API uses OAuth 2.0 for authentication. You will need to register your application in the Intuit Developer Portal to obtain client credentials. The base URL for the API is https://quickbooks.api.intuit.com/v3/company/{realmId}. Common endpoints include /invoice, /customer, /payment, and /bill. Rate limits apply: 500 requests per minute for production apps. Always implement exponential backoff for 429 responses. ## Stripe Payment Integration Stripe provides both client-side (Stripe.js) and server-side APIs. For PCI compliance, never pass raw card numbers through your server—use Stripe Elements or the Payment Intents API. Webhooks are essential for handling asynchronous events like payment succeeded or subscription renewed. Configure your webhook endpoint to verify signatures using the Stripe-Signature header. ## ShipStation Integration The ShipStation API is REST-based. Authentication uses API key and API secret in the Authorization header. Endpoints cover orders, shipments, carriers, and warehouses. Poll for new orders or use webhooks if available for your plan. Batch operations are supported for bulk label creation. ## Twilio SMS Integration Twilio's REST API requires Account SID and Auth Token. The Messaging API endpoint is /2010-04-01/Accounts/{AccountSid}/Messages.json. For two-way messaging, configure a webhook URL to receive incoming messages. Consider using a queue for high-volume outbound SMS to avoid rate limits. # PentaCodes Technical Reference and Integration Documentation # Version 1.0 | Last Updated March 2025 # This document contains technical reference material for common integrations and deployment procedures. ## QuickBooks Online Integration The QuickBooks Online API uses OAuth 2.0 for authentication. You will need to register your application in the Intuit Developer Portal to obtain client credentials. The base URL for the API is https://quickbooks.api.intuit.com/v3/company/{realmId}. Common endpoints include /invoice, /customer, /payment, and /bill. Rate limits apply: 500 requests per minute for production apps. Always implement exponential backoff for 429 responses. ## Stripe Payment Integration Stripe provides both client-side (Stripe.js) and server-side APIs. For PCI compliance, never pass raw card numbers through your server—use Stripe Elements or the Payment Intents API. Webhooks are essential for handling asynchronous events like payment succeeded or subscription renewed. Configure your webhook endpoint to verify signatures using the Stripe-Signature header. ## ShipStation Integration The ShipStation API is REST-based. Authentication uses API key and API secret in the Authorization header. Endpoints cover orders, shipments, carriers, and warehouses. Poll for new orders or use webhooks if available for your plan. Batch operations are supported for bulk label creation. ## Twilio SMS Integration Twilio's REST API requires Account SID and Auth Token. The Messaging API endpoint is /2010-04-01/Accounts/{AccountSid}/Messages.json. For two-way messaging, configure a webhook URL to receive incoming messages. Consider using a queue for high-volume outbound SMS to avoid rate limits. # PentaCodes Technical Reference and Integration Documentation # Version 1.0 | Last Updated March 2025 # This document contains technical reference material for common integrations and deployment procedures. ## QuickBooks Online Integration The QuickBooks Online API uses OAuth 2.0 for authentication. You will need to register your application in the Intuit Developer Portal to obtain client credentials. The base URL for the API is https://quickbooks.api.intuit.com/v3/company/{realmId}. Common endpoints include /invoice, /customer, /payment, and /bill. Rate limits apply: 500 requests per minute for production apps. Always implement exponential backoff for 429 responses. ## Stripe Payment Integration Stripe provides both client-side (Stripe.js) and server-side APIs. For PCI compliance, never pass raw card numbers through your server—use Stripe Elements or the Payment Intents API. Webhooks are essential for handling asynchronous events like payment succeeded or subscription renewed. Configure your webhook endpoint to verify signatures using the Stripe-Signature header. ## ShipStation Integration The ShipStation API is REST-based. Authentication uses API key and API secret in the Authorization header. Endpoints cover orders, shipments, carriers, and warehouses. Poll for new orders or use webhooks if available for your plan. Batch operations are supported for bulk label creation. ## Twilio SMS Integration Twilio's REST API requires Account SID and Auth Token. The Messaging API endpoint is /2010-04-01/Accounts/{AccountSid}/Messages.json. For two-way messaging, configure a webhook URL to receive incoming messages. Consider using a queue for high-volume outbound SMS to avoid rate limits. # PentaCodes Technical Reference and Integration Documentation # Version 1.0 | Last Updated March 2025 # This document contains technical reference material for common integrations and deployment procedures. ## QuickBooks Online Integration The QuickBooks Online API uses OAuth 2.0 for authentication. You will need to register your application in the Intuit Developer Portal to obtain client credentials. The base URL for the API is https://quickbooks.api.intuit.com/v3/company/{realmId}. Common endpoints include /invoice, /customer, /payment, and /bill. Rate limits apply: 500 requests per minute for production apps. Always implement exponential backoff for 429 responses. ## Stripe Payment Integration Stripe provides both client-side (Stripe.js) and server-side APIs. For PCI compliance, never pass raw card numbers through your server—use Stripe Elements or the Payment Intents API. Webhooks are essential for handling asynchronous events like payment succeeded or subscription renewed. Configure your webhook endpoint to verify signatures using the Stripe-Signature header. ## ShipStation Integration The ShipStation API is REST-based. Authentication uses API key and API secret in the Authorization header. Endpoints cover orders, shipments, carriers, and warehouses. Poll for new orders or use webhooks if available for your plan. Batch operations are supported for bulk label creation. ## Twilio SMS Integration Twilio's REST API requires Account SID and Auth Token. The Messaging API endpoint is /2010-04-01/Accounts/{AccountSid}/Messages.json. For two-way messaging, configure a webhook URL to receive incoming messages. Consider using a queue for high-volume outbound SMS to avoid rate limits. # PentaCodes Technical Reference and Integration Documentation # Version 1.0 | Last Updated March 2025 # This document contains technical reference material for common integrations and deployment procedures. ## QuickBooks Online Integration The QuickBooks Online API uses OAuth 2.0 for authentication. You will need to register your application in the Intuit Developer Portal to obtain client credentials. The base URL for the API is https://quickbooks.api.intuit.com/v3/company/{realmId}. Common endpoints include /invoice, /customer, /payment, and /bill. Rate limits apply: 500 requests per minute for production apps. Always implement exponential backoff for 429 responses. ## Stripe Payment Integration Stripe provides both client-side (Stripe.js) and server-side APIs. For PCI compliance, never pass raw card numbers through your server—use Stripe Elements or the Payment Intents API. Webhooks are essential for handling asynchronous events like payment succeeded or subscription renewed. Configure your webhook endpoint to verify signatures using the Stripe-Signature header. ## ShipStation Integration The ShipStation API is REST-based. Authentication uses API key and API secret in the Authorization header. Endpoints cover orders, shipments, carriers, and warehouses. Poll for new orders or use webhooks if available for your plan. Batch operations are supported for bulk label creation. ## Twilio SMS Integration Twilio's REST API requires Account SID and Auth Token. The Messaging API endpoint is /2010-04-01/Accounts/{AccountSid}/Messages.json. For two-way messaging, configure a webhook URL to receive incoming messages. Consider using a queue for high-volume outbound SMS to avoid rate limits. # PentaCodes Technical Reference and Integration Documentation # Version 1.0 | Last Updated March 2025 # This document contains technical reference material for common integrations and deployment procedures. ## QuickBooks Online Integration The QuickBooks Online API uses OAuth 2.0 for authentication. You will need to register your application in the Intuit Developer Portal to obtain client credentials. The base URL for the API is https://quickbooks.api.intuit.com/v3/company/{realmId}. Common endpoints include /invoice, /customer, /payment, and /bill. Rate limits apply: 500 requests per minute for production apps. Always implement exponential backoff for 429 responses. ## Stripe Payment Integration Stripe provides both client-side (Stripe.js) and server-side APIs. For PCI compliance, never pass raw card numbers through your server—use Stripe Elements or the Payment Intents API. Webhooks are essential for handling asynchronous events like payment succeeded or subscription renewed. Configure your webhook endpoint to verify signatures using the Stripe-Signature header. ## ShipStation Integration The ShipStation API is REST-based. Authentication uses API key and API secret in the Authorization header. Endpoints cover orders, shipments, carriers, and warehouses. Poll for new orders or use webhooks if available for your plan. Batch operations are supported for bulk label creation. ## Twilio SMS Integration Twilio's REST API requires Account SID and Auth Token. The Messaging API endpoint is /2010-04-01/Accounts/{AccountSid}/Messages.json. For two-way messaging, configure a webhook URL to receive incoming messages. Consider using a queue for high-volume outbound SMS to avoid rate limits. # PentaCodes Technical Reference and Integration Documentation # Version 1.0 | Last Updated March 2025 # This document contains technical reference material for common integrations and deployment procedures. ## QuickBooks Online Integration The QuickBooks Online API uses OAuth 2.0 for authentication. You will need to register your application in the Intuit Developer Portal to obtain client credentials. The base URL for the API is https://quickbooks.api.intuit.com/v3/company/{realmId}. Common endpoints include /invoice, /customer, /payment, and /bill. Rate limits apply: 500 requests per minute for production apps. Always implement exponential backoff for 429 responses. ## Stripe Payment Integration Stripe provides both client-side (Stripe.js) and server-side APIs. For PCI compliance, never pass raw card numbers through your server—use Stripe Elements or the Payment Intents API. Webhooks are essential for handling asynchronous events like payment succeeded or subscription renewed. Configure your webhook endpoint to verify signatures using the Stripe-Signature header. ## ShipStation Integration The ShipStation API is REST-based. Authentication uses API key and API secret in the Authorization header. Endpoints cover orders, shipments, carriers, and warehouses. Poll for new orders or use webhooks if available for your plan. Batch operations are supported for bulk label creation. ## Twilio SMS Integration Twilio's REST API requires Account SID and Auth Token. The Messaging API endpoint is /2010-04-01/Accounts/{AccountSid}/Messages.json. For two-way messaging, configure a webhook URL to receive incoming messages. Consider using a queue for high-volume outbound SMS to avoid rate limits. # PentaCodes Technical Reference and Integration Documentation # Version 1.0 | Last Updated March 2025 # This document contains technical reference material for common integrations and deployment procedures. ## QuickBooks Online Integration The QuickBooks Online API uses OAuth 2.0 for authentication. You will need to register your application in the Intuit Developer Portal to obtain client credentials. The base URL for the API is https://quickbooks.api.intuit.com/v3/company/{realmId}. Common endpoints include /invoice, /customer, /payment, and /bill. Rate limits apply: 500 requests per minute for production apps. Always implement exponential backoff for 429 responses. ## Stripe Payment Integration Stripe provides both client-side (Stripe.js) and server-side APIs. For PCI compliance, never pass raw card numbers through your server—use Stripe Elements or the Payment Intents API. Webhooks are essential for handling asynchronous events like payment succeeded or subscription renewed. Configure your webhook endpoint to verify signatures using the Stripe-Signature header. ## ShipStation Integration The ShipStation API is REST-based. Authentication uses API key and API secret in the Authorization header. Endpoints cover orders, shipments, carriers, and warehouses. Poll for new orders or use webhooks if available for your plan. Batch operations are supported for bulk label creation. ## Twilio SMS Integration Twilio's REST API requires Account SID and Auth Token. The Messaging API endpoint is /2010-04-01/Accounts/{AccountSid}/Messages.json. For two-way messaging, configure a webhook URL to receive incoming messages. Consider using a queue for high-volume outbound SMS to avoid rate limits. # PentaCodes Technical Reference and Integration Documentation # Version 1.0 | Last Updated March 2025 # This document contains technical reference material for common integrations and deployment procedures. ## QuickBooks Online Integration The QuickBooks Online API uses OAuth 2.0 for authentication. You will need to register your application in the Intuit Developer Portal to obtain client credentials. The base URL for the API is https://quickbooks.api.intuit.com/v3/company/{realmId}. Common endpoints include /invoice, /customer, /payment, and /bill. Rate limits apply: 500 requests per minute for production apps. Always implement exponential backoff for 429 responses. ## Stripe Payment Integration Stripe provides both client-side (Stripe.js) and server-side APIs. For PCI compliance, never pass raw card numbers through your server—use Stripe Elements or the Payment Intents API. Webhooks are essential for handling asynchronous events like payment succeeded or subscription renewed. Configure your webhook endpoint to verify signatures using the Stripe-Signature header. ## ShipStation Integration The ShipStation API is REST-based. Authentication uses API key and API secret in the Authorization header. Endpoints cover orders, shipments, carriers, and warehouses. Poll for new orders or use webhooks if available for your plan. Batch operations are supported for bulk label creation. ## Twilio SMS Integration Twilio's REST API requires Account SID and Auth Token. The Messaging API endpoint is /2010-04-01/Accounts/{AccountSid}/Messages.json. For two-way messaging, configure a webhook URL to receive incoming messages. Consider using a queue for high-volume outbound SMS to avoid rate limits. # PentaCodes Technical Reference and Integration Documentation # Version 1.0 | Last Updated March 2025 # This document contains technical reference material for common integrations and deployment procedures. ## QuickBooks Online Integration The QuickBooks Online API uses OAuth 2.0 for authentication. You will need to register your application in the Intuit Developer Portal to obtain client credentials. The base URL for the API is https://quickbooks.api.intuit.com/v3/company/{realmId}. Common endpoints include /invoice, /customer, /payment, and /bill. Rate limits apply: 500 requests per minute for production apps. Always implement exponential backoff for 429 responses. ## Stripe Payment Integration Stripe provides both client-side (Stripe.js) and server-side APIs. For PCI compliance, never pass raw card numbers through your server—use Stripe Elements or the Payment Intents API. Webhooks are essential for handling asynchronous events like payment succeeded or subscription renewed. Configure your webhook endpoint to verify signatures using the Stripe-Signature header. ## ShipStation Integration The ShipStation API is REST-based. Authentication uses API key and API secret in the Authorization header. Endpoints cover orders, shipments, carriers, and warehouses. Poll for new orders or use webhooks if available for your plan. Batch operations are supported for bulk label creation. ## Twilio SMS Integration Twilio's REST API requires Account SID and Auth Token. The Messaging API endpoint is /2010-04-01/Accounts/{AccountSid}/Messages.json. For two-way messaging, configure a webhook URL to receive incoming messages. Consider using a queue for high-volume outbound SMS to avoid rate limits. # PentaCodes Technical Reference and Integration Documentation # Version 1.0 | Last Updated March 2025 # This document contains technical reference material for common integrations and deployment procedures. ## QuickBooks Online Integration The QuickBooks Online API uses OAuth 2.0 for authentication. You will need to register your application in the Intuit Developer Portal to obtain client credentials. The base URL for the API is https://quickbooks.api.intuit.com/v3/company/{realmId}. Common endpoints include /invoice, /customer, /payment, and /bill. Rate limits apply: 500 requests per minute for production apps. Always implement exponential backoff for 429 responses. ## Stripe Payment Integration Stripe provides both client-side (Stripe.js) and server-side APIs. For PCI compliance, never pass raw card numbers through your server—use Stripe Elements or the Payment Intents API. Webhooks are essential for handling asynchronous events like payment succeeded or subscription renewed. Configure your webhook endpoint to verify signatures using the Stripe-Signature header. ## ShipStation Integration The ShipStation API is REST-based. Authentication uses API key and API secret in the Authorization header. Endpoints cover orders, shipments, carriers, and warehouses. Poll for new orders or use webhooks if available for your plan. Batch operations are supported for bulk label creation. ## Twilio SMS Integration Twilio's REST API requires Account SID and Auth Token. The Messaging API endpoint is /2010-04-01/Accounts/{AccountSid}/Messages.json. For two-way messaging, configure a webhook URL to receive incoming messages. Consider using a queue for high-volume outbound SMS to avoid rate limits. # PentaCodes Technical Reference and Integration Documentation # Version 1.0 | Last Updated March 2025 # This document contains technical reference material for common integrations and deployment procedures. ## QuickBooks Online Integration The QuickBooks Online API uses OAuth 2.0 for authentication. You will need to register your application in the Intuit Developer Portal to obtain client credentials. The base URL for the API is https://quickbooks.api.intuit.com/v3/company/{realmId}. Common endpoints include /invoice, /customer, /payment, and /bill. Rate limits apply: 500 requests per minute for production apps. Always implement exponential backoff for 429 responses. ## Stripe Payment Integration Stripe provides both client-side (Stripe.js) and server-side APIs. For PCI compliance, never pass raw card numbers through your server—use Stripe Elements or the Payment Intents API. Webhooks are essential for handling asynchronous events like payment succeeded or subscription renewed. Configure your webhook endpoint to verify signatures using the Stripe-Signature header. ## ShipStation Integration The ShipStation API is REST-based. Authentication uses API key and API secret in the Authorization header. Endpoints cover orders, shipments, carriers, and warehouses. Poll for new orders or use webhooks if available for your plan. Batch operations are supported for bulk label creation. ## Twilio SMS Integration Twilio's REST API requires Account SID and Auth Token. The Messaging API endpoint is /2010-04-01/Accounts/{AccountSid}/Messages.json. For two-way messaging, configure a webhook URL to receive incoming messages. Consider using a queue for high-volume outbound SMS to avoid rate limits. # PentaCodes Technical Reference and Integration Documentation # Version 1.0 | Last Updated March 2025 # This document contains technical reference material for common integrations and deployment procedures. ## QuickBooks Online Integration The QuickBooks Online API uses OAuth 2.0 for authentication. You will need to register your application in the Intuit Developer Portal to obtain client credentials. The base URL for the API is https://quickbooks.api.intuit.com/v3/company/{realmId}. Common endpoints include /invoice, /customer, /payment, and /bill. Rate limits apply: 500 requests per minute for production apps. Always implement exponential backoff for 429 responses. ## Stripe Payment Integration Stripe provides both client-side (Stripe.js) and server-side APIs. For PCI compliance, never pass raw card numbers through your server—use Stripe Elements or the Payment Intents API. Webhooks are essential for handling asynchronous events like payment succeeded or subscription renewed. Configure your webhook endpoint to verify signatures using the Stripe-Signature header. ## ShipStation Integration The ShipStation API is REST-based. Authentication uses API key and API secret in the Authorization header. Endpoints cover orders, shipments, carriers, and warehouses. Poll for new orders or use webhooks if available for your plan. Batch operations are supported for bulk label creation. ## Twilio SMS Integration Twilio's REST API requires Account SID and Auth Token. The Messaging API endpoint is /2010-04-01/Accounts/{AccountSid}/Messages.json. For two-way messaging, configure a webhook URL to receive incoming messages. Consider using a queue for high-volume outbound SMS to avoid rate limits. # PentaCodes Technical Reference and Integration Documentation # Version 1.0 | Last Updated March 2025 # This document contains technical reference material for common integrations and deployment procedures. ## QuickBooks Online Integration The QuickBooks Online API uses OAuth 2.0 for authentication. You will need to register your application in the Intuit Developer Portal to obtain client credentials. The base URL for the API is https://quickbooks.api.intuit.com/v3/company/{realmId}. Common endpoints include /invoice, /customer, /payment, and /bill. Rate limits apply: 500 requests per minute for production apps. Always implement exponential backoff for 429 responses. ## Stripe Payment Integration Stripe provides both client-side (Stripe.js) and server-side APIs. For PCI compliance, never pass raw card numbers through your server—use Stripe Elements or the Payment Intents API. Webhooks are essential for handling asynchronous events like payment succeeded or subscription renewed. Configure your webhook endpoint to verify signatures using the Stripe-Signature header. ## ShipStation Integration The ShipStation API is REST-based. Authentication uses API key and API secret in the Authorization header. Endpoints cover orders, shipments, carriers, and warehouses. Poll for new orders or use webhooks if available for your plan. Batch operations are supported for bulk label creation. ## Twilio SMS Integration Twilio's REST API requires Account SID and Auth Token. The Messaging API endpoint is /2010-04-01/Accounts/{AccountSid}/Messages.json. For two-way messaging, configure a webhook URL to receive incoming messages. Consider using a queue for high-volume outbound SMS to avoid rate limits. # PentaCodes Technical Reference and Integration Documentation # Version 1.0 | Last Updated March 2025 # This document contains technical reference material for common integrations and deployment procedures. ## QuickBooks Online Integration The QuickBooks Online API uses OAuth 2.0 for authentication. You will need to register your application in the Intuit Developer Portal to obtain client credentials. The base URL for the API is https://quickbooks.api.intuit.com/v3/company/{realmId}. Common endpoints include /invoice, /customer, /payment, and /bill. Rate limits apply: 500 requests per minute for production apps. Always implement exponential backoff for 429 responses. ## Stripe Payment Integration Stripe provides both client-side (Stripe.js) and server-side APIs. For PCI compliance, never pass raw card numbers through your server—use Stripe Elements or the Payment Intents API. Webhooks are essential for handling asynchronous events like payment succeeded or subscription renewed. Configure your webhook endpoint to verify signatures using the Stripe-Signature header. ## ShipStation Integration The ShipStation API is REST-based. Authentication uses API key and API secret in the Authorization header. Endpoints cover orders, shipments, carriers, and warehouses. Poll for new orders or use webhooks if available for your plan. Batch operations are supported for bulk label creation. ## Twilio SMS Integration Twilio's REST API requires Account SID and Auth Token. The Messaging API endpoint is /2010-04-01/Accounts/{AccountSid}/Messages.json. For two-way messaging, configure a webhook URL to receive incoming messages. Consider using a queue for high-volume outbound SMS to avoid rate limits. # PentaCodes Technical Reference and Integration Documentation # Version 1.0 | Last Updated March 2025 # This document contains technical reference material for common integrations and deployment procedures. ## QuickBooks Online Integration The QuickBooks Online API uses OAuth 2.0 for authentication. You will need to register your application in the Intuit Developer Portal to obtain client credentials. The base URL for the API is https://quickbooks.api.intuit.com/v3/company/{realmId}. Common endpoints include /invoice, /customer, /payment, and /bill. Rate limits apply: 500 requests per minute for production apps. Always implement exponential backoff for 429 responses. ## Stripe Payment Integration Stripe provides both client-side (Stripe.js) and server-side APIs. For PCI compliance, never pass raw card numbers through your server—use Stripe Elements or the Payment Intents API. Webhooks are essential for handling asynchronous events like payment succeeded or subscription renewed. Configure your webhook endpoint to verify signatures using the Stripe-Signature header. ## ShipStation Integration The ShipStation API is REST-based. Authentication uses API key and API secret in the Authorization header. Endpoints cover orders, shipments, carriers, and warehouses. Poll for new orders or use webhooks if available for your plan. Batch operations are supported for bulk label creation. ## Twilio SMS Integration Twilio's REST API requires Account SID and Auth Token. The Messaging API endpoint is /2010-04-01/Accounts/{AccountSid}/Messages.json. For two-way messaging, configure a webhook URL to receive incoming messages. Consider using a queue for high-volume outbound SMS to avoid rate limits. # PentaCodes Technical Reference and Integration Documentation # Version 1.0 | Last Updated March 2025 # This document contains technical reference material for common integrations and deployment procedures. ## QuickBooks Online Integration The QuickBooks Online API uses OAuth 2.0 for authentication. You will need to register your application in the Intuit Developer Portal to obtain client credentials. The base URL for the API is https://quickbooks.api.intuit.com/v3/company/{realmId}. Common endpoints include /invoice, /customer, /payment, and /bill. Rate limits apply: 500 requests per minute for production apps. Always implement exponential backoff for 429 responses. ## Stripe Payment Integration Stripe provides both client-side (Stripe.js) and server-side APIs. For PCI compliance, never pass raw card numbers through your server—use Stripe Elements or the Payment Intents API. Webhooks are essential for handling asynchronous events like payment succeeded or subscription renewed. Configure your webhook endpoint to verify signatures using the Stripe-Signature header. ## ShipStation Integration The ShipStation API is REST-based. Authentication uses API key and API secret in the Authorization header. Endpoints cover orders, shipments, carriers, and warehouses. Poll for new orders or use webhooks if available for your plan. Batch operations are supported for bulk label creation. ## Twilio SMS Integration Twilio's REST API requires Account SID and Auth Token. The Messaging API endpoint is /2010-04-01/Accounts/{AccountSid}/Messages.json. For two-way messaging, configure a webhook URL to receive incoming messages. Consider using a queue for high-volume outbound SMS to avoid rate limits. # PentaCodes Technical Reference and Integration Documentation # Version 1.0 | Last Updated March 2025 # This document contains technical reference material for common integrations and deployment procedures. ## QuickBooks Online Integration The QuickBooks Online API uses OAuth 2.0 for authentication. You will need to register your application in the Intuit Developer Portal to obtain client credentials. The base URL for the API is https://quickbooks.api.intuit.com/v3/company/{realmId}. Common endpoints include /invoice, /customer, /payment, and /bill. Rate limits apply: 500 requests per minute for production apps. Always implement exponential backoff for 429 responses. ## Stripe Payment Integration Stripe provides both client-side (Stripe.js) and server-side APIs. For PCI compliance, never pass raw card numbers through your server—use Stripe Elements or the Payment Intents API. Webhooks are essential for handling asynchronous events like payment succeeded or subscription renewed. Configure your webhook endpoint to verify signatures using the Stripe-Signature header. ## ShipStation Integration The ShipStation API is REST-based. Authentication uses API key and API secret in the Authorization header. Endpoints cover orders, shipments, carriers, and warehouses. Poll for new orders or use webhooks if available for your plan. Batch operations are supported for bulk label creation. ## Twilio SMS Integration Twilio's REST API requires Account SID and Auth Token. The Messaging API endpoint is /2010-04-01/Accounts/{AccountSid}/Messages.json. For two-way messaging, configure a webhook URL to receive incoming messages. Consider using a queue for high-volume outbound SMS to avoid rate limits. # PentaCodes Technical Reference and Integration Documentation # Version 1.0 | Last Updated March 2025 # This document contains technical reference material for common integrations and deployment procedures. ## QuickBooks Online Integration The QuickBooks Online API uses OAuth 2.0 for authentication. You will need to register your application in the Intuit Developer Portal to obtain client credentials. The base URL for the API is https://quickbooks.api.intuit.com/v3/company/{realmId}. Common endpoints include /invoice, /customer, /payment, and /bill. Rate limits apply: 500 requests per minute for production apps. Always implement exponential backoff for 429 responses. ## Stripe Payment Integration Stripe provides both client-side (Stripe.js) and server-side APIs. For PCI compliance, never pass raw card numbers through your server—use Stripe Elements or the Payment Intents API. Webhooks are essential for handling asynchronous events like payment succeeded or subscription renewed. Configure your webhook endpoint to verify signatures using the Stripe-Signature header. ## ShipStation Integration The ShipStation API is REST-based. Authentication uses API key and API secret in the Authorization header. Endpoints cover orders, shipments, carriers, and warehouses. Poll for new orders or use webhooks if available for your plan. Batch operations are supported for bulk label creation. ## Twilio SMS Integration Twilio's REST API requires Account SID and Auth Token. The Messaging API endpoint is /2010-04-01/Accounts/{AccountSid}/Messages.json. For two-way messaging, configure a webhook URL to receive incoming messages. Consider using a queue for high-volume outbound SMS to avoid rate limits. # PentaCodes Technical Reference and Integration Documentation # Version 1.0 | Last Updated March 2025 # This document contains technical reference material for common integrations and deployment procedures. ## QuickBooks Online Integration The QuickBooks Online API uses OAuth 2.0 for authentication. You will need to register your application in the Intuit Developer Portal to obtain client credentials. The base URL for the API is https://quickbooks.api.intuit.com/v3/company/{realmId}. Common endpoints include /invoice, /customer, /payment, and /bill. Rate limits apply: 500 requests per minute for production apps. Always implement exponential backoff for 429 responses. ## Stripe Payment Integration Stripe provides both client-side (Stripe.js) and server-side APIs. For PCI compliance, never pass raw card numbers through your server—use Stripe Elements or the Payment Intents API. Webhooks are essential for handling asynchronous events like payment succeeded or subscription renewed. Configure your webhook endpoint to verify signatures using the Stripe-Signature header. ## ShipStation Integration The ShipStation API is REST-based. Authentication uses API key and API secret in the Authorization header. Endpoints cover orders, shipments, carriers, and warehouses. Poll for new orders or use webhooks if available for your plan. Batch operations are supported for bulk label creation. ## Twilio SMS Integration Twilio's REST API requires Account SID and Auth Token. The Messaging API endpoint is /2010-04-01/Accounts/{AccountSid}/Messages.json. For two-way messaging, configure a webhook URL to receive incoming messages. Consider using a queue for high-volume outbound SMS to avoid rate limits. # PentaCodes Technical Reference and Integration Documentation # Version 1.0 | Last Updated March 2025 # This document contains technical reference material for common integrations and deployment procedures. ## QuickBooks Online Integration The QuickBooks Online API uses OAuth 2.0 for authentication. You will need to register your application in the Intuit Developer Portal to obtain client credentials. The base URL for the API is https://quickbooks.api.intuit.com/v3/company/{realmId}. Common endpoints include /invoice, /customer, /payment, and /bill. Rate limits apply: 500 requests per minute for production apps. Always implement exponential backoff for 429 responses. ## Stripe Payment Integration Stripe provides both client-side (Stripe.js) and server-side APIs. For PCI compliance, never pass raw card numbers through your server—use Stripe Elements or the Payment Intents API. Webhooks are essential for handling asynchronous events like payment succeeded or subscription renewed. Configure your webhook endpoint to verify signatures using the Stripe-Signature header. ## ShipStation Integration The ShipStation API is REST-based. Authentication uses API key and API secret in the Authorization header. Endpoints cover orders, shipments, carriers, and warehouses. Poll for new orders or use webhooks if available for your plan. Batch operations are supported for bulk label creation. ## Twilio SMS Integration Twilio's REST API requires Account SID and Auth Token. The Messaging API endpoint is /2010-04-01/Accounts/{AccountSid}/Messages.json. For two-way messaging, configure a webhook URL to receive incoming messages. Consider using a queue for high-volume outbound SMS to avoid rate limits. # PentaCodes Technical Reference and Integration Documentation # Version 1.0 | Last Updated March 2025 # This document contains technical reference material for common integrations and deployment procedures. ## QuickBooks Online Integration The QuickBooks Online API uses OAuth 2.0 for authentication. You will need to register your application in the Intuit Developer Portal to obtain client credentials. The base URL for the API is https://quickbooks.api.intuit.com/v3/company/{realmId}. Common endpoints include /invoice, /customer, /payment, and /bill. Rate limits apply: 500 requests per minute for production apps. Always implement exponential backoff for 429 responses. ## Stripe Payment Integration Stripe provides both client-side (Stripe.js) and server-side APIs. For PCI compliance, never pass raw card numbers through your server—use Stripe Elements or the Payment Intents API. Webhooks are essential for handling asynchronous events like payment succeeded or subscription renewed. Configure your webhook endpoint to verify signatures using the Stripe-Signature header. ## ShipStation Integration The ShipStation API is REST-based. Authentication uses API key and API secret in the Authorization header. Endpoints cover orders, shipments, carriers, and warehouses. Poll for new orders or use webhooks if available for your plan. Batch operations are supported for bulk label creation. ## Twilio SMS Integration Twilio's REST API requires Account SID and Auth Token. The Messaging API endpoint is /2010-04-01/Accounts/{AccountSid}/Messages.json. For two-way messaging, configure a webhook URL to receive incoming messages. Consider using a queue for high-volume outbound SMS to avoid rate limits. # PentaCodes Technical Reference and Integration Documentation # Version 1.0 | Last Updated March 2025 # This document contains technical reference material for common integrations and deployment procedures. ## QuickBooks Online Integration The QuickBooks Online API uses OAuth 2.0 for authentication. You will need to register your application in the Intuit Developer Portal to obtain client credentials. The base URL for the API is https://quickbooks.api.intuit.com/v3/company/{realmId}. Common endpoints include /invoice, /customer, /payment, and /bill. Rate limits apply: 500 requests per minute for production apps. Always implement exponential backoff for 429 responses. ## Stripe Payment Integration Stripe provides both client-side (Stripe.js) and server-side APIs. For PCI compliance, never pass raw card numbers through your server—use Stripe Elements or the Payment Intents API. Webhooks are essential for handling asynchronous events like payment succeeded or subscription renewed. Configure your webhook endpoint to verify signatures using the Stripe-Signature header. ## ShipStation Integration The ShipStation API is REST-based. Authentication uses API key and API secret in the Authorization header. Endpoints cover orders, shipments, carriers, and warehouses. Poll for new orders or use webhooks if available for your plan. Batch operations are supported for bulk label creation. ## Twilio SMS Integration Twilio's REST API requires Account SID and Auth Token. The Messaging API endpoint is /2010-04-01/Accounts/{AccountSid}/Messages.json. For two-way messaging, configure a webhook URL to receive incoming messages. Consider using a queue for high-volume outbound SMS to avoid rate limits. # PentaCodes Technical Reference and Integration Documentation # Version 1.0 | Last Updated March 2025 # This document contains technical reference material for common integrations and deployment procedures. ## QuickBooks Online Integration The QuickBooks Online API uses OAuth 2.0 for authentication. You will need to register your application in the Intuit Developer Portal to obtain client credentials. The base URL for the API is https://quickbooks.api.intuit.com/v3/company/{realmId}. Common endpoints include /invoice, /customer, /payment, and /bill. Rate limits apply: 500 requests per minute for production apps. Always implement exponential backoff for 429 responses. ## Stripe Payment Integration Stripe provides both client-side (Stripe.js) and server-side APIs. For PCI compliance, never pass raw card numbers through your server—use Stripe Elements or the Payment Intents API. Webhooks are essential for handling asynchronous events like payment succeeded or subscription renewed. Configure your webhook endpoint to verify signatures using the Stripe-Signature header. ## ShipStation Integration The ShipStation API is REST-based. Authentication uses API key and API secret in the Authorization header. Endpoints cover orders, shipments, carriers, and warehouses. Poll for new orders or use webhooks if available for your plan. Batch operations are supported for bulk label creation. ## Twilio SMS Integration Twilio's REST API requires Account SID and Auth Token. The Messaging API endpoint is /2010-04-01/Accounts/{AccountSid}/Messages.json. For two-way messaging, configure a webhook URL to receive incoming messages. Consider using a queue for high-volume outbound SMS to avoid rate limits. # PentaCodes Technical Reference and Integration Documentation # Version 1.0 | Last Updated March 2025 # This document contains technical reference material for common integrations and deployment procedures. ## QuickBooks Online Integration The QuickBooks Online API uses OAuth 2.0 for authentication. You will need to register your application in the Intuit Developer Portal to obtain client credentials. The base URL for the API is https://quickbooks.api.intuit.com/v3/company/{realmId}. Common endpoints include /invoice, /customer, /payment, and /bill. Rate limits apply: 500 requests per minute for production apps. Always implement exponential backoff for 429 responses. ## Stripe Payment Integration Stripe provides both client-side (Stripe.js) and server-side APIs. For PCI compliance, never pass raw card numbers through your server—use Stripe Elements or the Payment Intents API. Webhooks are essential for handling asynchronous events like payment succeeded or subscription renewed. Configure your webhook endpoint to verify signatures using the Stripe-Signature header. ## ShipStation Integration The ShipStation API is REST-based. Authentication uses API key and API secret in the Authorization header. Endpoints cover orders, shipments, carriers, and warehouses. Poll for new orders or use webhooks if available for your plan. Batch operations are supported for bulk label creation. ## Twilio SMS Integration Twilio's REST API requires Account SID and Auth Token. The Messaging API endpoint is /2010-04-01/Accounts/{AccountSid}/Messages.json. For two-way messaging, configure a webhook URL to receive incoming messages. Consider using a queue for high-volume outbound SMS to avoid rate limits. # PentaCodes Technical Reference and Integration Documentation # Version 1.0 | Last Updated March 2025 # This document contains technical reference material for common integrations and deployment procedures. ## QuickBooks Online Integration The QuickBooks Online API uses OAuth 2.0 for authentication. You will need to register your application in the Intuit Developer Portal to obtain client credentials. The base URL for the API is https://quickbooks.api.intuit.com/v3/company/{realmId}. Common endpoints include /invoice, /customer, /payment, and /bill. Rate limits apply: 500 requests per minute for production apps. Always implement exponential backoff for 429 responses. ## Stripe Payment Integration Stripe provides both client-side (Stripe.js) and server-side APIs. For PCI compliance, never pass raw card numbers through your server—use Stripe Elements or the Payment Intents API. Webhooks are essential for handling asynchronous events like payment succeeded or subscription renewed. Configure your webhook endpoint to verify signatures using the Stripe-Signature header. ## ShipStation Integration The ShipStation API is REST-based. Authentication uses API key and API secret in the Authorization header. Endpoints cover orders, shipments, carriers, and warehouses. Poll for new orders or use webhooks if available for your plan. Batch operations are supported for bulk label creation. ## Twilio SMS Integration Twilio's REST API requires Account SID and Auth Token. The Messaging API endpoint is /2010-04-01/Accounts/{AccountSid}/Messages.json. For two-way messaging, configure a webhook URL to receive incoming messages. Consider using a queue for high-volume outbound SMS to avoid rate limits. # PentaCodes Technical Reference and Integration Documentation # Version 1.0 | Last Updated March 2025 # This document contains technical reference material for common integrations and deployment procedures. ## QuickBooks Online Integration The QuickBooks Online API uses OAuth 2.0 for authentication. You will need to register your application in the Intuit Developer Portal to obtain client credentials. The base URL for the API is https://quickbooks.api.intuit.com/v3/company/{realmId}. Common endpoints include /invoice, /customer, /payment, and /bill. Rate limits apply: 500 requests per minute for production apps. Always implement exponential backoff for 429 responses. ## Stripe Payment Integration Stripe provides both client-side (Stripe.js) and server-side APIs. For PCI compliance, never pass raw card numbers through your server—use Stripe Elements or the Payment Intents API. Webhooks are essential for handling asynchronous events like payment succeeded or subscription renewed. Configure your webhook endpoint to verify signatures using the Stripe-Signature header. ## ShipStation Integration The ShipStation API is REST-based. Authentication uses API key and API secret in the Authorization header. Endpoints cover orders, shipments, carriers, and warehouses. Poll for new orders or use webhooks if available for your plan. Batch operations are supported for bulk label creation. ## Twilio SMS Integration Twilio's REST API requires Account SID and Auth Token. The Messaging API endpoint is /2010-04-01/Accounts/{AccountSid}/Messages.json. For two-way messaging, configure a webhook URL to receive incoming messages. Consider using a queue for high-volume outbound SMS to avoid rate limits. # PentaCodes Technical Reference and Integration Documentation # Version 1.0 | Last Updated March 2025 # This document contains technical reference material for common integrations and deployment procedures. ## QuickBooks Online Integration The QuickBooks Online API uses OAuth 2.0 for authentication. You will need to register your application in the Intuit Developer Portal to obtain client credentials. The base URL for the API is https://quickbooks.api.intuit.com/v3/company/{realmId}. Common endpoints include /invoice, /customer, /payment, and /bill. Rate limits apply: 500 requests per minute for production apps. Always implement exponential backoff for 429 responses. ## Stripe Payment Integration Stripe provides both client-side (Stripe.js) and server-side APIs. For PCI compliance, never pass raw card numbers through your server—use Stripe Elements or the Payment Intents API. Webhooks are essential for handling asynchronous events like payment succeeded or subscription renewed. Configure your webhook endpoint to verify signatures using the Stripe-Signature header. ## ShipStation Integration The ShipStation API is REST-based. Authentication uses API key and API secret in the Authorization header. Endpoints cover orders, shipments, carriers, and warehouses. Poll for new orders or use webhooks if available for your plan. Batch operations are supported for bulk label creation. ## Twilio SMS Integration Twilio's REST API requires Account SID and Auth Token. The Messaging API endpoint is /2010-04-01/Accounts/{AccountSid}/Messages.json. For two-way messaging, configure a webhook URL to receive incoming messages. Consider using a queue for high-volume outbound SMS to avoid rate limits. # PentaCodes Technical Reference and Integration Documentation # Version 1.0 | Last Updated March 2025 # This document contains technical reference material for common integrations and deployment procedures. ## QuickBooks Online Integration The QuickBooks Online API uses OAuth 2.0 for authentication. You will need to register your application in the Intuit Developer Portal to obtain client credentials. The base URL for the API is https://quickbooks.api.intuit.com/v3/company/{realmId}. Common endpoints include /invoice, /customer, /payment, and /bill. Rate limits apply: 500 requests per minute for production apps. Always implement exponential backoff for 429 responses. ## Stripe Payment Integration Stripe provides both client-side (Stripe.js) and server-side APIs. For PCI compliance, never pass raw card numbers through your server—use Stripe Elements or the Payment Intents API. Webhooks are essential for handling asynchronous events like payment succeeded or subscription renewed. Configure your webhook endpoint to verify signatures using the Stripe-Signature header. ## ShipStation Integration The ShipStation API is REST-based. Authentication uses API key and API secret in the Authorization header. Endpoints cover orders, shipments, carriers, and warehouses. Poll for new orders or use webhooks if available for your plan. Batch operations are supported for bulk label creation. ## Twilio SMS Integration Twilio's REST API requires Account SID and Auth Token. The Messaging API endpoint is /2010-04-01/Accounts/{AccountSid}/Messages.json. For two-way messaging, configure a webhook URL to receive incoming messages. Consider using a queue for high-volume outbound SMS to avoid rate limits. # PentaCodes Technical Reference and Integration Documentation # Version 1.0 | Last Updated March 2025 # This document contains technical reference material for common integrations and deployment procedures. ## QuickBooks Online Integration The QuickBooks Online API uses OAuth 2.0 for authentication. You will need to register your application in the Intuit Developer Portal to obtain client credentials. The base URL for the API is https://quickbooks.api.intuit.com/v3/company/{realmId}. Common endpoints include /invoice, /customer, /payment, and /bill. Rate limits apply: 500 requests per minute for production apps. Always implement exponential backoff for 429 responses. ## Stripe Payment Integration Stripe provides both client-side (Stripe.js) and server-side APIs. For PCI compliance, never pass raw card numbers through your server—use Stripe Elements or the Payment Intents API. Webhooks are essential for handling asynchronous events like payment succeeded or subscription renewed. Configure your webhook endpoint to verify signatures using the Stripe-Signature header. ## ShipStation Integration The ShipStation API is REST-based. Authentication uses API key and API secret in the Authorization header. Endpoints cover orders, shipments, carriers, and warehouses. Poll for new orders or use webhooks if available for your plan. Batch operations are supported for bulk label creation. ## Twilio SMS Integration Twilio's REST API requires Account SID and Auth Token. The Messaging API endpoint is /2010-04-01/Accounts/{AccountSid}/Messages.json. For two-way messaging, configure a webhook URL to receive incoming messages. Consider using a queue for high-volume outbound SMS to avoid rate limits. # PentaCodes Technical Reference and Integration Documentation # Version 1.0 | Last Updated March 2025 # This document contains technical reference material for common integrations and deployment procedures. ## QuickBooks Online Integration The QuickBooks Online API uses OAuth 2.0 for authentication. You will need to register your application in the Intuit Developer Portal to obtain client credentials. The base URL for the API is https://quickbooks.api.intuit.com/v3/company/{realmId}. Common endpoints include /invoice, /customer, /payment, and /bill. Rate limits apply: 500 requests per minute for production apps. Always implement exponential backoff for 429 responses. ## Stripe Payment Integration Stripe provides both client-side (Stripe.js) and server-side APIs. For PCI compliance, never pass raw card numbers through your server—use Stripe Elements or the Payment Intents API. Webhooks are essential for handling asynchronous events like payment succeeded or subscription renewed. Configure your webhook endpoint to verify signatures using the Stripe-Signature header. ## ShipStation Integration The ShipStation API is REST-based. Authentication uses API key and API secret in the Authorization header. Endpoints cover orders, shipments, carriers, and warehouses. Poll for new orders or use webhooks if available for your plan. Batch operations are supported for bulk label creation. ## Twilio SMS Integration Twilio's REST API requires Account SID and Auth Token. The Messaging API endpoint is /2010-04-01/Accounts/{AccountSid}/Messages.json. For two-way messaging, configure a webhook URL to receive incoming messages. Consider using a queue for high-volume outbound SMS to avoid rate limits. # PentaCodes Technical Reference and Integration Documentation # Version 1.0 | Last Updated March 2025 # This document contains technical reference material for common integrations and deployment procedures. ## QuickBooks Online Integration The QuickBooks Online API uses OAuth 2.0 for authentication. You will need to register your application in the Intuit Developer Portal to obtain client credentials. The base URL for the API is https://quickbooks.api.intuit.com/v3/company/{realmId}. Common endpoints include /invoice, /customer, /payment, and /bill. Rate limits apply: 500 requests per minute for production apps. Always implement exponential backoff for 429 responses. ## Stripe Payment Integration Stripe provides both client-side (Stripe.js) and server-side APIs. For PCI compliance, never pass raw card numbers through your server—use Stripe Elements or the Payment Intents API. Webhooks are essential for handling asynchronous events like payment succeeded or subscription renewed. Configure your webhook endpoint to verify signatures using the Stripe-Signature header. ## ShipStation Integration The ShipStation API is REST-based. Authentication uses API key and API secret in the Authorization header. Endpoints cover orders, shipments, carriers, and warehouses. Poll for new orders or use webhooks if available for your plan. Batch operations are supported for bulk label creation. ## Twilio SMS Integration Twilio's REST API requires Account SID and Auth Token. The Messaging API endpoint is /2010-04-01/Accounts/{AccountSid}/Messages.json. For two-way messaging, configure a webhook URL to receive incoming messages. Consider using a queue for high-volume outbound SMS to avoid rate limits. # PentaCodes Technical Reference and Integration Documentation # Version 1.0 | Last Updated March 2025 # This document contains technical reference material for common integrations and deployment procedures. ## QuickBooks Online Integration The QuickBooks Online API uses OAuth 2.0 for authentication. You will need to register your application in the Intuit Developer Portal to obtain client credentials. The base URL for the API is https://quickbooks.api.intuit.com/v3/company/{realmId}. Common endpoints include /invoice, /customer, /payment, and /bill. Rate limits apply: 500 requests per minute for production apps. Always implement exponential backoff for 429 responses. ## Stripe Payment Integration Stripe provides both client-side (Stripe.js) and server-side APIs. For PCI compliance, never pass raw card numbers through your server—use Stripe Elements or the Payment Intents API. Webhooks are essential for handling asynchronous events like payment succeeded or subscription renewed. Configure your webhook endpoint to verify signatures using the Stripe-Signature header. ## ShipStation Integration The ShipStation API is REST-based. Authentication uses API key and API secret in the Authorization header. Endpoints cover orders, shipments, carriers, and warehouses. Poll for new orders or use webhooks if available for your plan. Batch operations are supported for bulk label creation. ## Twilio SMS Integration Twilio's REST API requires Account SID and Auth Token. The Messaging API endpoint is /2010-04-01/Accounts/{AccountSid}/Messages.json. For two-way messaging, configure a webhook URL to receive incoming messages. Consider using a queue for high-volume outbound SMS to avoid rate limits. # PentaCodes Technical Reference and Integration Documentation # Version 1.0 | Last Updated March 2025 # This document contains technical reference material for common integrations and deployment procedures. ## QuickBooks Online Integration The QuickBooks Online API uses OAuth 2.0 for authentication. You will need to register your application in the Intuit Developer Portal to obtain client credentials. The base URL for the API is https://quickbooks.api.intuit.com/v3/company/{realmId}. Common endpoints include /invoice, /customer, /payment, and /bill. Rate limits apply: 500 requests per minute for production apps. Always implement exponential backoff for 429 responses. ## Stripe Payment Integration Stripe provides both client-side (Stripe.js) and server-side APIs. For PCI compliance, never pass raw card numbers through your server—use Stripe Elements or the Payment Intents API. Webhooks are essential for handling asynchronous events like payment succeeded or subscription renewed. Configure your webhook endpoint to verify signatures using the Stripe-Signature header. ## ShipStation Integration The ShipStation API is REST-based. Authentication uses API key and API secret in the Authorization header. Endpoints cover orders, shipments, carriers, and warehouses. Poll for new orders or use webhooks if available for your plan. Batch operations are supported for bulk label creation. ## Twilio SMS Integration Twilio's REST API requires Account SID and Auth Token. The Messaging API endpoint is /2010-04-01/Accounts/{AccountSid}/Messages.json. For two-way messaging, configure a webhook URL to receive incoming messages. Consider using a queue for high-volume outbound SMS to avoid rate limits. # PentaCodes Technical Reference and Integration Documentation # Version 1.0 | Last Updated March 2025 # This document contains technical reference material for common integrations and deployment procedures. ## QuickBooks Online Integration The QuickBooks Online API uses OAuth 2.0 for authentication. You will need to register your application in the Intuit Developer Portal to obtain client credentials. The base URL for the API is https://quickbooks.api.intuit.com/v3/company/{realmId}. Common endpoints include /invoice, /customer, /payment, and /bill. Rate limits apply: 500 requests per minute for production apps. Always implement exponential backoff for 429 responses. ## Stripe Payment Integration Stripe provides both client-side (Stripe.js) and server-side APIs. For PCI compliance, never pass raw card numbers through your server—use Stripe Elements or the Payment Intents API. Webhooks are essential for handling asynchronous events like payment succeeded or subscription renewed. Configure your webhook endpoint to verify signatures using the Stripe-Signature header. ## ShipStation Integration The ShipStation API is REST-based. Authentication uses API key and API secret in the Authorization header. Endpoints cover orders, shipments, carriers, and warehouses. Poll for new orders or use webhooks if available for your plan. Batch operations are supported for bulk label creation. ## Twilio SMS Integration Twilio's REST API requires Account SID and Auth Token. The Messaging API endpoint is /2010-04-01/Accounts/{AccountSid}/Messages.json. For two-way messaging, configure a webhook URL to receive incoming messages. Consider using a queue for high-volume outbound SMS to avoid rate limits. # PentaCodes Technical Reference and Integration Documentation # Version 1.0 | Last Updated March 2025 # This document contains technical reference material for common integrations and deployment procedures. ## QuickBooks Online Integration The QuickBooks Online API uses OAuth 2.0 for authentication. You will need to register your application in the Intuit Developer Portal to obtain client credentials. The base URL for the API is https://quickbooks.api.intuit.com/v3/company/{realmId}. Common endpoints include /invoice, /customer, /payment, and /bill. Rate limits apply: 500 requests per minute for production apps. Always implement exponential backoff for 429 responses. ## Stripe Payment Integration Stripe provides both client-side (Stripe.js) and server-side APIs. For PCI compliance, never pass raw card numbers through your server—use Stripe Elements or the Payment Intents API. Webhooks are essential for handling asynchronous events like payment succeeded or subscription renewed. Configure your webhook endpoint to verify signatures using the Stripe-Signature header. ## ShipStation Integration The ShipStation API is REST-based. Authentication uses API key and API secret in the Authorization header. Endpoints cover orders, shipments, carriers, and warehouses. Poll for new orders or use webhooks if available for your plan. Batch operations are supported for bulk label creation. ## Twilio SMS Integration Twilio's REST API requires Account SID and Auth Token. The Messaging API endpoint is /2010-04-01/Accounts/{AccountSid}/Messages.json. For two-way messaging, configure a webhook URL to receive incoming messages. Consider using a queue for high-volume outbound SMS to avoid rate limits. # PentaCodes Technical Reference and Integration Documentation # Version 1.0 | Last Updated March 2025 # This document contains technical reference material for common integrations and deployment procedures. ## QuickBooks Online Integration The QuickBooks Online API uses OAuth 2.0 for authentication. You will need to register your application in the Intuit Developer Portal to obtain client credentials. The base URL for the API is https://quickbooks.api.intuit.com/v3/company/{realmId}. Common endpoints include /invoice, /customer, /payment, and /bill. Rate limits apply: 500 requests per minute for production apps. Always implement exponential backoff for 429 responses. ## Stripe Payment Integration Stripe provides both client-side (Stripe.js) and server-side APIs. For PCI compliance, never pass raw card numbers through your server—use Stripe Elements or the Payment Intents API. Webhooks are essential for handling asynchronous events like payment succeeded or subscription renewed. Configure your webhook endpoint to verify signatures using the Stripe-Signature header. ## ShipStation Integration The ShipStation API is REST-based. Authentication uses API key and API secret in the Authorization header. Endpoints cover orders, shipments, carriers, and warehouses. Poll for new orders or use webhooks if available for your plan. Batch operations are supported for bulk label creation. ## Twilio SMS Integration Twilio's REST API requires Account SID and Auth Token. The Messaging API endpoint is /2010-04-01/Accounts/{AccountSid}/Messages.json. For two-way messaging, configure a webhook URL to receive incoming messages. Consider using a queue for high-volume outbound SMS to avoid rate limits. # PentaCodes Technical Reference and Integration Documentation # Version 1.0 | Last Updated March 2025 # This document contains technical reference material for common integrations and deployment procedures. ## QuickBooks Online Integration The QuickBooks Online API uses OAuth 2.0 for authentication. You will need to register your application in the Intuit Developer Portal to obtain client credentials. The base URL for the API is https://quickbooks.api.intuit.com/v3/company/{realmId}. Common endpoints include /invoice, /customer, /payment, and /bill. Rate limits apply: 500 requests per minute for production apps. Always implement exponential backoff for 429 responses. ## Stripe Payment Integration Stripe provides both client-side (Stripe.js) and server-side APIs. For PCI compliance, never pass raw card numbers through your server—use Stripe Elements or the Payment Intents API. Webhooks are essential for handling asynchronous events like payment succeeded or subscription renewed. Configure your webhook endpoint to verify signatures using the Stripe-Signature header. ## ShipStation Integration The ShipStation API is REST-based. Authentication uses API key and API secret in the Authorization header. Endpoints cover orders, shipments, carriers, and warehouses. Poll for new orders or use webhooks if available for your plan. Batch operations are supported for bulk label creation. ## Twilio SMS Integration Twilio's REST API requires Account SID and Auth Token. The Messaging API endpoint is /2010-04-01/Accounts/{AccountSid}/Messages.json. For two-way messaging, configure a webhook URL to receive incoming messages. Consider using a queue for high-volume outbound SMS to avoid rate limits. # PentaCodes Technical Reference and Integration Documentation # Version 1.0 | Last Updated March 2025 # This document contains technical reference material for common integrations and deployment procedures. ## QuickBooks Online Integration The QuickBooks Online API uses OAuth 2.0 for authentication. You will need to register your application in the Intuit Developer Portal to obtain client credentials. The base URL for the API is https://quickbooks.api.intuit.com/v3/company/{realmId}. Common endpoints include /invoice, /customer, /payment, and /bill. Rate limits apply: 500 requests per minute for production apps. Always implement exponential backoff for 429 responses. ## Stripe Payment Integration Stripe provides both client-side (Stripe.js) and server-side APIs. For PCI compliance, never pass raw card numbers through your server—use Stripe Elements or the Payment Intents API. Webhooks are essential for handling asynchronous events like payment succeeded or subscription renewed. Configure your webhook endpoint to verify signatures using the Stripe-Signature header. ## ShipStation Integration The ShipStation API is REST-based. Authentication uses API key and API secret in the Authorization header. Endpoints cover orders, shipments, carriers, and warehouses. Poll for new orders or use webhooks if available for your plan. Batch operations are supported for bulk label creation. ## Twilio SMS Integration Twilio's REST API requires Account SID and Auth Token. The Messaging API endpoint is /2010-04-01/Accounts/{AccountSid}/Messages.json. For two-way messaging, configure a webhook URL to receive incoming messages. Consider using a queue for high-volume outbound SMS to avoid rate limits. # PentaCodes Technical Reference and Integration Documentation # Version 1.0 | Last Updated March 2025 # This document contains technical reference material for common integrations and deployment procedures. ## QuickBooks Online Integration The QuickBooks Online API uses OAuth 2.0 for authentication. You will need to register your application in the Intuit Developer Portal to obtain client credentials. The base URL for the API is https://quickbooks.api.intuit.com/v3/company/{realmId}. Common endpoints include /invoice, /customer, /payment, and /bill. Rate limits apply: 500 requests per minute for production apps. Always implement exponential backoff for 429 responses. ## Stripe Payment Integration Stripe provides both client-side (Stripe.js) and server-side APIs. For PCI compliance, never pass raw card numbers through your server—use Stripe Elements or the Payment Intents API. Webhooks are essential for handling asynchronous events like payment succeeded or subscription renewed. Configure your webhook endpoint to verify signatures using the Stripe-Signature header. ## ShipStation Integration The ShipStation API is REST-based. Authentication uses API key and API secret in the Authorization header. Endpoints cover orders, shipments, carriers, and warehouses. Poll for new orders or use webhooks if available for your plan. Batch operations are supported for bulk label creation. ## Twilio SMS Integration Twilio's REST API requires Account SID and Auth Token. The Messaging API endpoint is /2010-04-01/Accounts/{AccountSid}/Messages.json. For two-way messaging, configure a webhook URL to receive incoming messages. Consider using a queue for high-volume outbound SMS to avoid rate limits. # PentaCodes Technical Reference and Integration Documentation # Version 1.0 | Last Updated March 2025 # This document contains technical reference material for common integrations and deployment procedures. ## QuickBooks Online Integration The QuickBooks Online API uses OAuth 2.0 for authentication. You will need to register your application in the Intuit Developer Portal to obtain client credentials. The base URL for the API is https://quickbooks.api.intuit.com/v3/company/{realmId}. Common endpoints include /invoice, /customer, /payment, and /bill. Rate limits apply: 500 requests per minute for production apps. Always implement exponential backoff for 429 responses. ## Stripe Payment Integration Stripe provides both client-side (Stripe.js) and server-side APIs. For PCI compliance, never pass raw card numbers through your server—use Stripe Elements or the Payment Intents API. Webhooks are essential for handling asynchronous events like payment succeeded or subscription renewed. Configure your webhook endpoint to verify signatures using the Stripe-Signature header. ## ShipStation Integration The ShipStation API is REST-based. Authentication uses API key and API secret in the Authorization header. Endpoints cover orders, shipments, carriers, and warehouses. Poll for new orders or use webhooks if available for your plan. Batch operations are supported for bulk label creation. ## Twilio SMS Integration Twilio's REST API requires Account SID and Auth Token. The Messaging API endpoint is /2010-04-01/Accounts/{AccountSid}/Messages.json. For two-way messaging, configure a webhook URL to receive incoming messages. Consider using a queue for high-volume outbound SMS to avoid rate limits. # PentaCodes Technical Reference and Integration Documentation # Version 1.0 | Last Updated March 2025 # This document contains technical reference material for common integrations and deployment procedures. ## QuickBooks Online Integration The QuickBooks Online API uses OAuth 2.0 for authentication. You will need to register your application in the Intuit Developer Portal to obtain client credentials. The base URL for the API is https://quickbooks.api.intuit.com/v3/company/{realmId}. Common endpoints include /invoice, /customer, /payment, and /bill. Rate limits apply: 500 requests per minute for production apps. Always implement exponential backoff for 429 responses. ## Stripe Payment Integration Stripe provides both client-side (Stripe.js) and server-side APIs. For PCI compliance, never pass raw card numbers through your server—use Stripe Elements or the Payment Intents API. Webhooks are essential for handling asynchronous events like payment succeeded or subscription renewed. Configure your webhook endpoint to verify signatures using the Stripe-Signature header. ## ShipStation Integration The ShipStation API is REST-based. Authentication uses API key and API secret in the Authorization header. Endpoints cover orders, shipments, carriers, and warehouses. Poll for new orders or use webhooks if available for your plan. Batch operations are supported for bulk label creation. ## Twilio SMS Integration Twilio's REST API requires Account SID and Auth Token. The Messaging API endpoint is /2010-04-01/Accounts/{AccountSid}/Messages.json. For two-way messaging, configure a webhook URL to receive incoming messages. Consider using a queue for high-volume outbound SMS to avoid rate limits. # PentaCodes Technical Reference and Integration Documentation # Version 1.0 | Last Updated March 2025 # This document contains technical reference material for common integrations and deployment procedures. ## QuickBooks Online Integration The QuickBooks Online API uses OAuth 2.0 for authentication. You will need to register your application in the Intuit Developer Portal to obtain client credentials. The base URL for the API is https://quickbooks.api.intuit.com/v3/company/{realmId}. Common endpoints include /invoice, /customer, /payment, and /bill. Rate limits apply: 500 requests per minute for production apps. Always implement exponential backoff for 429 responses. ## Stripe Payment Integration Stripe provides both client-side (Stripe.js) and server-side APIs. For PCI compliance, never pass raw card numbers through your server—use Stripe Elements or the Payment Intents API. Webhooks are essential for handling asynchronous events like payment succeeded or subscription renewed. Configure your webhook endpoint to verify signatures using the Stripe-Signature header. ## ShipStation Integration The ShipStation API is REST-based. Authentication uses API key and API secret in the Authorization header. Endpoints cover orders, shipments, carriers, and warehouses. Poll for new orders or use webhooks if available for your plan. Batch operations are supported for bulk label creation. ## Twilio SMS Integration Twilio's REST API requires Account SID and Auth Token. The Messaging API endpoint is /2010-04-01/Accounts/{AccountSid}/Messages.json. For two-way messaging, configure a webhook URL to receive incoming messages. Consider using a queue for high-volume outbound SMS to avoid rate limits. # PentaCodes Technical Reference and Integration Documentation # Version 1.0 | Last Updated March 2025 # This document contains technical reference material for common integrations and deployment procedures. ## QuickBooks Online Integration The QuickBooks Online API uses OAuth 2.0 for authentication. You will need to register your application in the Intuit Developer Portal to obtain client credentials. The base URL for the API is https://quickbooks.api.intuit.com/v3/company/{realmId}. Common endpoints include /invoice, /customer, /payment, and /bill. Rate limits apply: 500 requests per minute for production apps. Always implement exponential backoff for 429 responses. ## Stripe Payment Integration Stripe provides both client-side (Stripe.js) and server-side APIs. For PCI compliance, never pass raw card numbers through your server—use Stripe Elements or the Payment Intents API. Webhooks are essential for handling asynchronous events like payment succeeded or subscription renewed. Configure your webhook endpoint to verify signatures using the Stripe-Signature header. ## ShipStation Integration The ShipStation API is REST-based. Authentication uses API key and API secret in the Authorization header. Endpoints cover orders, shipments, carriers, and warehouses. Poll for new orders or use webhooks if available for your plan. Batch operations are supported for bulk label creation. ## Twilio SMS Integration Twilio's REST API requires Account SID and Auth Token. The Messaging API endpoint is /2010-04-01/Accounts/{AccountSid}/Messages.json. For two-way messaging, configure a webhook URL to receive incoming messages. Consider using a queue for high-volume outbound SMS to avoid rate limits. # PentaCodes Technical Reference and Integration Documentation # Version 1.0 | Last Updated March 2025 # This document contains technical reference material for common integrations and deployment procedures. ## QuickBooks Online Integration The QuickBooks Online API uses OAuth 2.0 for authentication. You will need to register your application in the Intuit Developer Portal to obtain client credentials. The base URL for the API is https://quickbooks.api.intuit.com/v3/company/{realmId}. Common endpoints include /invoice, /customer, /payment, and /bill. Rate limits apply: 500 requests per minute for production apps. Always implement exponential backoff for 429 responses. ## Stripe Payment Integration Stripe provides both client-side (Stripe.js) and server-side APIs. For PCI compliance, never pass raw card numbers through your server—use Stripe Elements or the Payment Intents API. Webhooks are essential for handling asynchronous events like payment succeeded or subscription renewed. Configure your webhook endpoint to verify signatures using the Stripe-Signature header. ## ShipStation Integration The ShipStation API is REST-based. Authentication uses API key and API secret in the Authorization header. Endpoints cover orders, shipments, carriers, and warehouses. Poll for new orders or use webhooks if available for your plan. Batch operations are supported for bulk label creation. ## Twilio SMS Integration Twilio's REST API requires Account SID and Auth Token. The Messaging API endpoint is /2010-04-01/Accounts/{AccountSid}/Messages.json. For two-way messaging, configure a webhook URL to receive incoming messages. Consider using a queue for high-volume outbound SMS to avoid rate limits. # PentaCodes Technical Reference and Integration Documentation # Version 1.0 | Last Updated March 2025 # This document contains technical reference material for common integrations and deployment procedures. ## QuickBooks Online Integration The QuickBooks Online API uses OAuth 2.0 for authentication. You will need to register your application in the Intuit Developer Portal to obtain client credentials. The base URL for the API is https://quickbooks.api.intuit.com/v3/company/{realmId}. Common endpoints include /invoice, /customer, /payment, and /bill. Rate limits apply: 500 requests per minute for production apps. Always implement exponential backoff for 429 responses. ## Stripe Payment Integration Stripe provides both client-side (Stripe.js) and server-side APIs. For PCI compliance, never pass raw card numbers through your server—use Stripe Elements or the Payment Intents API. Webhooks are essential for handling asynchronous events like payment succeeded or subscription renewed. Configure your webhook endpoint to verify signatures using the Stripe-Signature header. ## ShipStation Integration The ShipStation API is REST-based. Authentication uses API key and API secret in the Authorization header. Endpoints cover orders, shipments, carriers, and warehouses. Poll for new orders or use webhooks if available for your plan. Batch operations are supported for bulk label creation. ## Twilio SMS Integration Twilio's REST API requires Account SID and Auth Token. The Messaging API endpoint is /2010-04-01/Accounts/{AccountSid}/Messages.json. For two-way messaging, configure a webhook URL to receive incoming messages. Consider using a queue for high-volume outbound SMS to avoid rate limits. # PentaCodes Technical Reference and Integration Documentation # Version 1.0 | Last Updated March 2025 # This document contains technical reference material for common integrations and deployment procedures. ## QuickBooks Online Integration The QuickBooks Online API uses OAuth 2.0 for authentication. You will need to register your application in the Intuit Developer Portal to obtain client credentials. The base URL for the API is https://quickbooks.api.intuit.com/v3/company/{realmId}. Common endpoints include /invoice, /customer, /payment, and /bill. Rate limits apply: 500 requests per minute for production apps. Always implement exponential backoff for 429 responses. ## Stripe Payment Integration Stripe provides both client-side (Stripe.js) and server-side APIs. For PCI compliance, never pass raw card numbers through your server—use Stripe Elements or the Payment Intents API. Webhooks are essential for handling asynchronous events like payment succeeded or subscription renewed. Configure your webhook endpoint to verify signatures using the Stripe-Signature header. ## ShipStation Integration The ShipStation API is REST-based. Authentication uses API key and API secret in the Authorization header. Endpoints cover orders, shipments, carriers, and warehouses. Poll for new orders or use webhooks if available for your plan. Batch operations are supported for bulk label creation. ## Twilio SMS Integration Twilio's REST API requires Account SID and Auth Token. The Messaging API endpoint is /2010-04-01/Accounts/{AccountSid}/Messages.json. For two-way messaging, configure a webhook URL to receive incoming messages. Consider using a queue for high-volume outbound SMS to avoid rate limits. # PentaCodes Technical Reference and Integration Documentation # Version 1.0 | Last Updated March 2025 # This document contains technical reference material for common integrations and deployment procedures. ## QuickBooks Online Integration The QuickBooks Online API uses OAuth 2.0 for authentication. You will need to register your application in the Intuit Developer Portal to obtain client credentials. The base URL for the API is https://quickbooks.api.intuit.com/v3/company/{realmId}. Common endpoints include /invoice, /customer, /payment, and /bill. Rate limits apply: 500 requests per minute for production apps. Always implement exponential backoff for 429 responses. ## Stripe Payment Integration Stripe provides both client-side (Stripe.js) and server-side APIs. For PCI compliance, never pass raw card numbers through your server—use Stripe Elements or the Payment Intents API. Webhooks are essential for handling asynchronous events like payment succeeded or subscription renewed. Configure your webhook endpoint to verify signatures using the Stripe-Signature header. ## ShipStation Integration The ShipStation API is REST-based. Authentication uses API key and API secret in the Authorization header. Endpoints cover orders, shipments, carriers, and warehouses. Poll for new orders or use webhooks if available for your plan. Batch operations are supported for bulk label creation. ## Twilio SMS Integration Twilio's REST API requires Account SID and Auth Token. The Messaging API endpoint is /2010-04-01/Accounts/{AccountSid}/Messages.json. For two-way messaging, configure a webhook URL to receive incoming messages. Consider using a queue for high-volume outbound SMS to avoid rate limits. # PentaCodes Technical Reference and Integration Documentation # Version 1.0 | Last Updated March 2025 # This document contains technical reference material for common integrations and deployment procedures. ## QuickBooks Online Integration The QuickBooks Online API uses OAuth 2.0 for authentication. You will need to register your application in the Intuit Developer Portal to obtain client credentials. The base URL for the API is https://quickbooks.api.intuit.com/v3/company/{realmId}. Common endpoints include /invoice, /customer, /payment, and /bill. Rate limits apply: 500 requests per minute for production apps. Always implement exponential backoff for 429 responses. ## Stripe Payment Integration Stripe provides both client-side (Stripe.js) and server-side APIs. For PCI compliance, never pass raw card numbers through your server—use Stripe Elements or the Payment Intents API. Webhooks are essential for handling asynchronous events like payment succeeded or subscription renewed. Configure your webhook endpoint to verify signatures using the Stripe-Signature header. ## ShipStation Integration The ShipStation API is REST-based. Authentication uses API key and API secret in the Authorization header. Endpoints cover orders, shipments, carriers, and warehouses. Poll for new orders or use webhooks if available for your plan. Batch operations are supported for bulk label creation. ## Twilio SMS Integration Twilio's REST API requires Account SID and Auth Token. The Messaging API endpoint is /2010-04-01/Accounts/{AccountSid}/Messages.json. For two-way messaging, configure a webhook URL to receive incoming messages. Consider using a queue for high-volume outbound SMS to avoid rate limits. # PentaCodes Technical Reference and Integration Documentation # Version 1.0 | Last Updated March 2025 # This document contains technical reference material for common integrations and deployment procedures. ## QuickBooks Online Integration The QuickBooks Online API uses OAuth 2.0 for authentication. You will need to register your application in the Intuit Developer Portal to obtain client credentials. The base URL for the API is https://quickbooks.api.intuit.com/v3/company/{realmId}. Common endpoints include /invoice, /customer, /payment, and /bill. Rate limits apply: 500 requests per minute for production apps. Always implement exponential backoff for 429 responses. ## Stripe Payment Integration Stripe provides both client-side (Stripe.js) and server-side APIs. For PCI compliance, never pass raw card numbers through your server—use Stripe Elements or the Payment Intents API. Webhooks are essential for handling asynchronous events like payment succeeded or subscription renewed. Configure your webhook endpoint to verify signatures using the Stripe-Signature header. ## ShipStation Integration The ShipStation API is REST-based. Authentication uses API key and API secret in the Authorization header. Endpoints cover orders, shipments, carriers, and warehouses. Poll for new orders or use webhooks if available for your plan. Batch operations are supported for bulk label creation. ## Twilio SMS Integration Twilio's REST API requires Account SID and Auth Token. The Messaging API endpoint is /2010-04-01/Accounts/{AccountSid}/Messages.json. For two-way messaging, configure a webhook URL to receive incoming messages. Consider using a queue for high-volume outbound SMS to avoid rate limits. # PentaCodes Technical Reference and Integration Documentation # Version 1.0 | Last Updated March 2025 # This document contains technical reference material for common integrations and deployment procedures. ## QuickBooks Online Integration The QuickBooks Online API uses OAuth 2.0 for authentication. You will need to register your application in the Intuit Developer Portal to obtain client credentials. The base URL for the API is https://quickbooks.api.intuit.com/v3/company/{realmId}. Common endpoints include /invoice, /customer, /payment, and /bill. Rate limits apply: 500 requests per minute for production apps. Always implement exponential backoff for 429 responses. ## Stripe Payment Integration Stripe provides both client-side (Stripe.js) and server-side APIs. For PCI compliance, never pass raw card numbers through your server—use Stripe Elements or the Payment Intents API. Webhooks are essential for handling asynchronous events like payment succeeded or subscription renewed. Configure your webhook endpoint to verify signatures using the Stripe-Signature header. ## ShipStation Integration The ShipStation API is REST-based. Authentication uses API key and API secret in the Authorization header. Endpoints cover orders, shipments, carriers, and warehouses. Poll for new orders or use webhooks if available for your plan. Batch operations are supported for bulk label creation. ## Twilio SMS Integration Twilio's REST API requires Account SID and Auth Token. The Messaging API endpoint is /2010-04-01/Accounts/{AccountSid}/Messages.json. For two-way messaging, configure a webhook URL to receive incoming messages. Consider using a queue for high-volume outbound SMS to avoid rate limits. # PentaCodes Technical Reference and Integration Documentation # Version 1.0 | Last Updated March 2025 # This document contains technical reference material for common integrations and deployment procedures. ## QuickBooks Online Integration The QuickBooks Online API uses OAuth 2.0 for authentication. You will need to register your application in the Intuit Developer Portal to obtain client credentials. The base URL for the API is https://quickbooks.api.intuit.com/v3/company/{realmId}. Common endpoints include /invoice, /customer, /payment, and /bill. Rate limits apply: 500 requests per minute for production apps. Always implement exponential backoff for 429 responses. ## Stripe Payment Integration Stripe provides both client-side (Stripe.js) and server-side APIs. For PCI compliance, never pass raw card numbers through your server—use Stripe Elements or the Payment Intents API. Webhooks are essential for handling asynchronous events like payment succeeded or subscription renewed. Configure your webhook endpoint to verify signatures using the Stripe-Signature header. ## ShipStation Integration The ShipStation API is REST-based. Authentication uses API key and API secret in the Authorization header. Endpoints cover orders, shipments, carriers, and warehouses. Poll for new orders or use webhooks if available for your plan. Batch operations are supported for bulk label creation. ## Twilio SMS Integration Twilio's REST API requires Account SID and Auth Token. The Messaging API endpoint is /2010-04-01/Accounts/{AccountSid}/Messages.json. For two-way messaging, configure a webhook URL to receive incoming messages. Consider using a queue for high-volume outbound SMS to avoid rate limits. # PentaCodes Technical Reference and Integration Documentation # Version 1.0 | Last Updated March 2025 # This document contains technical reference material for common integrations and deployment procedures. ## QuickBooks Online Integration The QuickBooks Online API uses OAuth 2.0 for authentication. You will need to register your application in the Intuit Developer Portal to obtain client credentials. The base URL for the API is https://quickbooks.api.intuit.com/v3/company/{realmId}. Common endpoints include /invoice, /customer, /payment, and /bill. Rate limits apply: 500 requests per minute for production apps. Always implement exponential backoff for 429 responses. ## Stripe Payment Integration Stripe provides both client-side (Stripe.js) and server-side APIs. For PCI compliance, never pass raw card numbers through your server—use Stripe Elements or the Payment Intents API. Webhooks are essential for handling asynchronous events like payment succeeded or subscription renewed. Configure your webhook endpoint to verify signatures using the Stripe-Signature header. ## ShipStation Integration The ShipStation API is REST-based. Authentication uses API key and API secret in the Authorization header. Endpoints cover orders, shipments, carriers, and warehouses. Poll for new orders or use webhooks if available for your plan. Batch operations are supported for bulk label creation. ## Twilio SMS Integration Twilio's REST API requires Account SID and Auth Token. The Messaging API endpoint is /2010-04-01/Accounts/{AccountSid}/Messages.json. For two-way messaging, configure a webhook URL to receive incoming messages. Consider using a queue for high-volume outbound SMS to avoid rate limits. # PentaCodes Technical Reference and Integration Documentation # Version 1.0 | Last Updated March 2025 # This document contains technical reference material for common integrations and deployment procedures. ## QuickBooks Online Integration The QuickBooks Online API uses OAuth 2.0 for authentication. You will need to register your application in the Intuit Developer Portal to obtain client credentials. The base URL for the API is https://quickbooks.api.intuit.com/v3/company/{realmId}. Common endpoints include /invoice, /customer, /payment, and /bill. Rate limits apply: 500 requests per minute for production apps. Always implement exponential backoff for 429 responses. ## Stripe Payment Integration Stripe provides both client-side (Stripe.js) and server-side APIs. For PCI compliance, never pass raw card numbers through your server—use Stripe Elements or the Payment Intents API. Webhooks are essential for handling asynchronous events like payment succeeded or subscription renewed. Configure your webhook endpoint to verify signatures using the Stripe-Signature header. ## ShipStation Integration The ShipStation API is REST-based. Authentication uses API key and API secret in the Authorization header. Endpoints cover orders, shipments, carriers, and warehouses. Poll for new orders or use webhooks if available for your plan. Batch operations are supported for bulk label creation. ## Twilio SMS Integration Twilio's REST API requires Account SID and Auth Token. The Messaging API endpoint is /2010-04-01/Accounts/{AccountSid}/Messages.json. For two-way messaging, configure a webhook URL to receive incoming messages. Consider using a queue for high-volume outbound SMS to avoid rate limits. # PentaCodes Technical Reference and Integration Documentation # Version 1.0 | Last Updated March 2025 # This document contains technical reference material for common integrations and deployment procedures. ## QuickBooks Online Integration The QuickBooks Online API uses OAuth 2.0 for authentication. You will need to register your application in the Intuit Developer Portal to obtain client credentials. The base URL for the API is https://quickbooks.api.intuit.com/v3/company/{realmId}. Common endpoints include /invoice, /customer, /payment, and /bill. Rate limits apply: 500 requests per minute for production apps. Always implement exponential backoff for 429 responses. ## Stripe Payment Integration Stripe provides both client-side (Stripe.js) and server-side APIs. For PCI compliance, never pass raw card numbers through your server—use Stripe Elements or the Payment Intents API. Webhooks are essential for handling asynchronous events like payment succeeded or subscription renewed. Configure your webhook endpoint to verify signatures using the Stripe-Signature header. ## ShipStation Integration The ShipStation API is REST-based. Authentication uses API key and API secret in the Authorization header. Endpoints cover orders, shipments, carriers, and warehouses. Poll for new orders or use webhooks if available for your plan. Batch operations are supported for bulk label creation. ## Twilio SMS Integration Twilio's REST API requires Account SID and Auth Token. The Messaging API endpoint is /2010-04-01/Accounts/{AccountSid}/Messages.json. For two-way messaging, configure a webhook URL to receive incoming messages. Consider using a queue for high-volume outbound SMS to avoid rate limits. # PentaCodes Technical Reference and Integration Documentation # Version 1.0 | Last Updated March 2025 # This document contains technical reference material for common integrations and deployment procedures. ## QuickBooks Online Integration The QuickBooks Online API uses OAuth 2.0 for authentication. You will need to register your application in the Intuit Developer Portal to obtain client credentials. The base URL for the API is https://quickbooks.api.intuit.com/v3/company/{realmId}. Common endpoints include /invoice, /customer, /payment, and /bill. Rate limits apply: 500 requests per minute for production apps. Always implement exponential backoff for 429 responses. ## Stripe Payment Integration Stripe provides both client-side (Stripe.js) and server-side APIs. For PCI compliance, never pass raw card numbers through your server—use Stripe Elements or the Payment Intents API. Webhooks are essential for handling asynchronous events like payment succeeded or subscription renewed. Configure your webhook endpoint to verify signatures using the Stripe-Signature header. ## ShipStation Integration The ShipStation API is REST-based. Authentication uses API key and API secret in the Authorization header. Endpoints cover orders, shipments, carriers, and warehouses. Poll for new orders or use webhooks if available for your plan. Batch operations are supported for bulk label creation. ## Twilio SMS Integration Twilio's REST API requires Account SID and Auth Token. The Messaging API endpoint is /2010-04-01/Accounts/{AccountSid}/Messages.json. For two-way messaging, configure a webhook URL to receive incoming messages. Consider using a queue for high-volume outbound SMS to avoid rate limits. # PentaCodes Technical Reference and Integration Documentation # Version 1.0 | Last Updated March 2025 # This document contains technical reference material for common integrations and deployment procedures. ## QuickBooks Online Integration The QuickBooks Online API uses OAuth 2.0 for authentication. You will need to register your application in the Intuit Developer Portal to obtain client credentials. The base URL for the API is https://quickbooks.api.intuit.com/v3/company/{realmId}. Common endpoints include /invoice, /customer, /payment, and /bill. Rate limits apply: 500 requests per minute for production apps. Always implement exponential backoff for 429 responses. ## Stripe Payment Integration Stripe provides both client-side (Stripe.js) and server-side APIs. For PCI compliance, never pass raw card numbers through your server—use Stripe Elements or the Payment Intents API. Webhooks are essential for handling asynchronous events like payment succeeded or subscription renewed. Configure your webhook endpoint to verify signatures using the Stripe-Signature header. ## ShipStation Integration The ShipStation API is REST-based. Authentication uses API key and API secret in the Authorization header. Endpoints cover orders, shipments, carriers, and warehouses. Poll for new orders or use webhooks if available for your plan. Batch operations are supported for bulk label creation. ## Twilio SMS Integration Twilio's REST API requires Account SID and Auth Token. The Messaging API endpoint is /2010-04-01/Accounts/{AccountSid}/Messages.json. For two-way messaging, configure a webhook URL to receive incoming messages. Consider using a queue for high-volume outbound SMS to avoid rate limits. # PentaCodes Technical Reference and Integration Documentation # Version 1.0 | Last Updated March 2025 # This document contains technical reference material for common integrations and deployment procedures. ## QuickBooks Online Integration The QuickBooks Online API uses OAuth 2.0 for authentication. You will need to register your application in the Intuit Developer Portal to obtain client credentials. The base URL for the API is https://quickbooks.api.intuit.com/v3/company/{realmId}. Common endpoints include /invoice, /customer, /payment, and /bill. Rate limits apply: 500 requests per minute for production apps. Always implement exponential backoff for 429 responses. ## Stripe Payment Integration Stripe provides both client-side (Stripe.js) and server-side APIs. For PCI compliance, never pass raw card numbers through your server—use Stripe Elements or the Payment Intents API. Webhooks are essential for handling asynchronous events like payment succeeded or subscription renewed. Configure your webhook endpoint to verify signatures using the Stripe-Signature header. ## ShipStation Integration The ShipStation API is REST-based. Authentication uses API key and API secret in the Authorization header. Endpoints cover orders, shipments, carriers, and warehouses. Poll for new orders or use webhooks if available for your plan. Batch operations are supported for bulk label creation. ## Twilio SMS Integration Twilio's REST API requires Account SID and Auth Token. The Messaging API endpoint is /2010-04-01/Accounts/{AccountSid}/Messages.json. For two-way messaging, configure a webhook URL to receive incoming messages. Consider using a queue for high-volume outbound SMS to avoid rate limits. # PentaCodes Technical Reference and Integration Documentation # Version 1.0 | Last Updated March 2025 # This document contains technical reference material for common integrations and deployment procedures. ## QuickBooks Online Integration The QuickBooks Online API uses OAuth 2.0 for authentication. You will need to register your application in the Intuit Developer Portal to obtain client credentials. The base URL for the API is https://quickbooks.api.intuit.com/v3/company/{realmId}. Common endpoints include /invoice, /customer, /payment, and /bill. Rate limits apply: 500 requests per minute for production apps. Always implement exponential backoff for 429 responses. ## Stripe Payment Integration Stripe provides both client-side (Stripe.js) and server-side APIs. For PCI compliance, never pass raw card numbers through your server—use Stripe Elements or the Payment Intents API. Webhooks are essential for handling asynchronous events like payment succeeded or subscription renewed. Configure your webhook endpoint to verify signatures using the Stripe-Signature header. ## ShipStation Integration The ShipStation API is REST-based. Authentication uses API key and API secret in the Authorization header. Endpoints cover orders, shipments, carriers, and warehouses. Poll for new orders or use webhooks if available for your plan. Batch operations are supported for bulk label creation. ## Twilio SMS Integration Twilio's REST API requires Account SID and Auth Token. The Messaging API endpoint is /2010-04-01/Accounts/{AccountSid}/Messages.json. For two-way messaging, configure a webhook URL to receive incoming messages. Consider using a queue for high-volume outbound SMS to avoid rate limits. # PentaCodes Technical Reference and Integration Documentation # Version 1.0 | Last Updated March 2025 # This document contains technical reference material for common integrations and deployment procedures. ## QuickBooks Online Integration The QuickBooks Online API uses OAuth 2.0 for authentication. You will need to register your application in the Intuit Developer Portal to obtain client credentials. The base URL for the API is https://quickbooks.api.intuit.com/v3/company/{realmId}. Common endpoints include /invoice, /customer, /payment, and /bill. Rate limits apply: 500 requests per minute for production apps. Always implement exponential backoff for 429 responses. ## Stripe Payment Integration Stripe provides both client-side (Stripe.js) and server-side APIs. For PCI compliance, never pass raw card numbers through your server—use Stripe Elements or the Payment Intents API. Webhooks are essential for handling asynchronous events like payment succeeded or subscription renewed. Configure your webhook endpoint to verify signatures using the Stripe-Signature header. ## ShipStation Integration The ShipStation API is REST-based. Authentication uses API key and API secret in the Authorization header. Endpoints cover orders, shipments, carriers, and warehouses. Poll for new orders or use webhooks if available for your plan. Batch operations are supported for bulk label creation. ## Twilio SMS Integration Twilio's REST API requires Account SID and Auth Token. The Messaging API endpoint is /2010-04-01/Accounts/{AccountSid}/Messages.json. For two-way messaging, configure a webhook URL to receive incoming messages. Consider using a queue for high-volume outbound SMS to avoid rate limits. # PentaCodes Technical Reference and Integration Documentation # Version 1.0 | Last Updated March 2025 # This document contains technical reference material for common integrations and deployment procedures. ## QuickBooks Online Integration The QuickBooks Online API uses OAuth 2.0 for authentication. You will need to register your application in the Intuit Developer Portal to obtain client credentials. The base URL for the API is https://quickbooks.api.intuit.com/v3/company/{realmId}. Common endpoints include /invoice, /customer, /payment, and /bill. Rate limits apply: 500 requests per minute for production apps. Always implement exponential backoff for 429 responses. ## Stripe Payment Integration Stripe provides both client-side (Stripe.js) and server-side APIs. For PCI compliance, never pass raw card numbers through your server—use Stripe Elements or the Payment Intents API. Webhooks are essential for handling asynchronous events like payment succeeded or subscription renewed. Configure your webhook endpoint to verify signatures using the Stripe-Signature header. ## ShipStation Integration The ShipStation API is REST-based. Authentication uses API key and API secret in the Authorization header. Endpoints cover orders, shipments, carriers, and warehouses. Poll for new orders or use webhooks if available for your plan. Batch operations are supported for bulk label creation. ## Twilio SMS Integration Twilio's REST API requires Account SID and Auth Token. The Messaging API endpoint is /2010-04-01/Accounts/{AccountSid}/Messages.json. For two-way messaging, configure a webhook URL to receive incoming messages. Consider using a queue for high-volume outbound SMS to avoid rate limits. # PentaCodes Technical Reference and Integration Documentation # Version 1.0 | Last Updated March 2025 # This document contains technical reference material for common integrations and deployment procedures. ## QuickBooks Online Integration The QuickBooks Online API uses OAuth 2.0 for authentication. You will need to register your application in the Intuit Developer Portal to obtain client credentials. The base URL for the API is https://quickbooks.api.intuit.com/v3/company/{realmId}. Common endpoints include /invoice, /customer, /payment, and /bill. Rate limits apply: 500 requests per minute for production apps. Always implement exponential backoff for 429 responses. ## Stripe Payment Integration Stripe provides both client-side (Stripe.js) and server-side APIs. For PCI compliance, never pass raw card numbers through your server—use Stripe Elements or the Payment Intents API. Webhooks are essential for handling asynchronous events like payment succeeded or subscription renewed. Configure your webhook endpoint to verify signatures using the Stripe-Signature header. ## ShipStation Integration The ShipStation API is REST-based. Authentication uses API key and API secret in the Authorization header. Endpoints cover orders, shipments, carriers, and warehouses. Poll for new orders or use webhooks if available for your plan. Batch operations are supported for bulk label creation. ## Twilio SMS Integration Twilio's REST API requires Account SID and Auth Token. The Messaging API endpoint is /2010-04-01/Accounts/{AccountSid}/Messages.json. For two-way messaging, configure a webhook URL to receive incoming messages. Consider using a queue for high-volume outbound SMS to avoid rate limits. # PentaCodes Technical Reference and Integration Documentation # Version 1.0 | Last Updated March 2025 # This document contains technical reference material for common integrations and deployment procedures. ## QuickBooks Online Integration The QuickBooks Online API uses OAuth 2.0 for authentication. You will need to register your application in the Intuit Developer Portal to obtain client credentials. The base URL for the API is https://quickbooks.api.intuit.com/v3/company/{realmId}. Common endpoints include /invoice, /customer, /payment, and /bill. Rate limits apply: 500 requests per minute for production apps. Always implement exponential backoff for 429 responses. ## Stripe Payment Integration Stripe provides both client-side (Stripe.js) and server-side APIs. For PCI compliance, never pass raw card numbers through your server—use Stripe Elements or the Payment Intents API. Webhooks are essential for handling asynchronous events like payment succeeded or subscription renewed. Configure your webhook endpoint to verify signatures using the Stripe-Signature header. ## ShipStation Integration The ShipStation API is REST-based. Authentication uses API key and API secret in the Authorization header. Endpoints cover orders, shipments, carriers, and warehouses. Poll for new orders or use webhooks if available for your plan. Batch operations are supported for bulk label creation. ## Twilio SMS Integration Twilio's REST API requires Account SID and Auth Token. The Messaging API endpoint is /2010-04-01/Accounts/{AccountSid}/Messages.json. For two-way messaging, configure a webhook URL to receive incoming messages. Consider using a queue for high-volume outbound SMS to avoid rate limits. # PentaCodes Technical Reference and Integration Documentation # Version 1.0 | Last Updated March 2025 # This document contains technical reference material for common integrations and deployment procedures. ## QuickBooks Online Integration The QuickBooks Online API uses OAuth 2.0 for authentication. You will need to register your application in the Intuit Developer Portal to obtain client credentials. The base URL for the API is https://quickbooks.api.intuit.com/v3/company/{realmId}. Common endpoints include /invoice, /customer, /payment, and /bill. Rate limits apply: 500 requests per minute for production apps. Always implement exponential backoff for 429 responses. ## Stripe Payment Integration Stripe provides both client-side (Stripe.js) and server-side APIs. For PCI compliance, never pass raw card numbers through your server—use Stripe Elements or the Payment Intents API. Webhooks are essential for handling asynchronous events like payment succeeded or subscription renewed. Configure your webhook endpoint to verify signatures using the Stripe-Signature header. ## ShipStation Integration The ShipStation API is REST-based. Authentication uses API key and API secret in the Authorization header. Endpoints cover orders, shipments, carriers, and warehouses. Poll for new orders or use webhooks if available for your plan. Batch operations are supported for bulk label creation. ## Twilio SMS Integration Twilio's REST API requires Account SID and Auth Token. The Messaging API endpoint is /2010-04-01/Accounts/{AccountSid}/Messages.json. For two-way messaging, configure a webhook URL to receive incoming messages. Consider using a queue for high-volume outbound SMS to avoid rate limits. # PentaCodes Technical Reference and Integration Documentation # Version 1.0 | Last Updated March 2025 # This document contains technical reference material for common integrations and deployment procedures. ## QuickBooks Online Integration The QuickBooks Online API uses OAuth 2.0 for authentication. You will need to register your application in the Intuit Developer Portal to obtain client credentials. The base URL for the API is https://quickbooks.api.intuit.com/v3/company/{realmId}. Common endpoints include /invoice, /customer, /payment, and /bill. Rate limits apply: 500 requests per minute for production apps. Always implement exponential backoff for 429 responses. ## Stripe Payment Integration Stripe provides both client-side (Stripe.js) and server-side APIs. For PCI compliance, never pass raw card numbers through your server—use Stripe Elements or the Payment Intents API. Webhooks are essential for handling asynchronous events like payment succeeded or subscription renewed. Configure your webhook endpoint to verify signatures using the Stripe-Signature header. ## ShipStation Integration The ShipStation API is REST-based. Authentication uses API key and API secret in the Authorization header. Endpoints cover orders, shipments, carriers, and warehouses. Poll for new orders or use webhooks if available for your plan. Batch operations are supported for bulk label creation. ## Twilio SMS Integration Twilio's REST API requires Account SID and Auth Token. The Messaging API endpoint is /2010-04-01/Accounts/{AccountSid}/Messages.json. For two-way messaging, configure a webhook URL to receive incoming messages. Consider using a queue for high-volume outbound SMS to avoid rate limits. # PentaCodes Technical Reference and Integration Documentation # Version 1.0 | Last Updated March 2025 # This document contains technical reference material for common integrations and deployment procedures. ## QuickBooks Online Integration The QuickBooks Online API uses OAuth 2.0 for authentication. You will need to register your application in the Intuit Developer Portal to obtain client credentials. The base URL for the API is https://quickbooks.api.intuit.com/v3/company/{realmId}. Common endpoints include /invoice, /customer, /payment, and /bill. Rate limits apply: 500 requests per minute for production apps. Always implement exponential backoff for 429 responses. ## Stripe Payment Integration Stripe provides both client-side (Stripe.js) and server-side APIs. For PCI compliance, never pass raw card numbers through your server—use Stripe Elements or the Payment Intents API. Webhooks are essential for handling asynchronous events like payment succeeded or subscription renewed. Configure your webhook endpoint to verify signatures using the Stripe-Signature header. ## ShipStation Integration The ShipStation API is REST-based. Authentication uses API key and API secret in the Authorization header. Endpoints cover orders, shipments, carriers, and warehouses. Poll for new orders or use webhooks if available for your plan. Batch operations are supported for bulk label creation. ## Twilio SMS Integration Twilio's REST API requires Account SID and Auth Token. The Messaging API endpoint is /2010-04-01/Accounts/{AccountSid}/Messages.json. For two-way messaging, configure a webhook URL to receive incoming messages. Consider using a queue for high-volume outbound SMS to avoid rate limits. # PentaCodes Technical Reference and Integration Documentation # Version 1.0 | Last Updated March 2025 # This document contains technical reference material for common integrations and deployment procedures. ## QuickBooks Online Integration The QuickBooks Online API uses OAuth 2.0 for authentication. You will need to register your application in the Intuit Developer Portal to obtain client credentials. The base URL for the API is https://quickbooks.api.intuit.com/v3/company/{realmId}. Common endpoints include /invoice, /customer, /payment, and /bill. Rate limits apply: 500 requests per minute for production apps. Always implement exponential backoff for 429 responses. ## Stripe Payment Integration Stripe provides both client-side (Stripe.js) and server-side APIs. For PCI compliance, never pass raw card numbers through your server—use Stripe Elements or the Payment Intents API. Webhooks are essential for handling asynchronous events like payment succeeded or subscription renewed. Configure your webhook endpoint to verify signatures using the Stripe-Signature header. ## ShipStation Integration The ShipStation API is REST-based. Authentication uses API key and API secret in the Authorization header. Endpoints cover orders, shipments, carriers, and warehouses. Poll for new orders or use webhooks if available for your plan. Batch operations are supported for bulk label creation. ## Twilio SMS Integration Twilio's REST API requires Account SID and Auth Token. The Messaging API endpoint is /2010-04-01/Accounts/{AccountSid}/Messages.json. For two-way messaging, configure a webhook URL to receive incoming messages. Consider using a queue for high-volume outbound SMS to avoid rate limits. # PentaCodes Technical Reference and Integration Documentation # Version 1.0 | Last Updated March 2025 # This document contains technical reference material for common integrations and deployment procedures. ## QuickBooks Online Integration The QuickBooks Online API uses OAuth 2.0 for authentication. You will need to register your application in the Intuit Developer Portal to obtain client credentials. The base URL for the API is https://quickbooks.api.intuit.com/v3/company/{realmId}. Common endpoints include /invoice, /customer, /payment, and /bill. Rate limits apply: 500 requests per minute for production apps. Always implement exponential backoff for 429 responses. ## Stripe Payment Integration Stripe provides both client-side (Stripe.js) and server-side APIs. For PCI compliance, never pass raw card numbers through your server—use Stripe Elements or the Payment Intents API. Webhooks are essential for handling asynchronous events like payment succeeded or subscription renewed. Configure your webhook endpoint to verify signatures using the Stripe-Signature header. ## ShipStation Integration The ShipStation API is REST-based. Authentication uses API key and API secret in the Authorization header. Endpoints cover orders, shipments, carriers, and warehouses. Poll for new orders or use webhooks if available for your plan. Batch operations are supported for bulk label creation. ## Twilio SMS Integration Twilio's REST API requires Account SID and Auth Token. The Messaging API endpoint is /2010-04-01/Accounts/{AccountSid}/Messages.json. For two-way messaging, configure a webhook URL to receive incoming messages. Consider using a queue for high-volume outbound SMS to avoid rate limits. # PentaCodes Technical Reference and Integration Documentation # Version 1.0 | Last Updated March 2025 # This document contains technical reference material for common integrations and deployment procedures. ## QuickBooks Online Integration The QuickBooks Online API uses OAuth 2.0 for authentication. You will need to register your application in the Intuit Developer Portal to obtain client credentials. The base URL for the API is https://quickbooks.api.intuit.com/v3/company/{realmId}. Common endpoints include /invoice, /customer, /payment, and /bill. Rate limits apply: 500 requests per minute for production apps. Always implement exponential backoff for 429 responses. ## Stripe Payment Integration Stripe provides both client-side (Stripe.js) and server-side APIs. For PCI compliance, never pass raw card numbers through your server—use Stripe Elements or the Payment Intents API. Webhooks are essential for handling asynchronous events like payment succeeded or subscription renewed. Configure your webhook endpoint to verify signatures using the Stripe-Signature header. ## ShipStation Integration The ShipStation API is REST-based. Authentication uses API key and API secret in the Authorization header. Endpoints cover orders, shipments, carriers, and warehouses. Poll for new orders or use webhooks if available for your plan. Batch operations are supported for bulk label creation. ## Twilio SMS Integration Twilio's REST API requires Account SID and Auth Token. The Messaging API endpoint is /2010-04-01/Accounts/{AccountSid}/Messages.json. For two-way messaging, configure a webhook URL to receive incoming messages. Consider using a queue for high-volume outbound SMS to avoid rate limits. # PentaCodes Technical Reference and Integration Documentation # Version 1.0 | Last Updated March 2025 # This document contains technical reference material for common integrations and deployment procedures. ## QuickBooks Online Integration The QuickBooks Online API uses OAuth 2.0 for authentication. You will need to register your application in the Intuit Developer Portal to obtain client credentials. The base URL for the API is https://quickbooks.api.intuit.com/v3/company/{realmId}. Common endpoints include /invoice, /customer, /payment, and /bill. Rate limits apply: 500 requests per minute for production apps. Always implement exponential backoff for 429 responses. ## Stripe Payment Integration Stripe provides both client-side (Stripe.js) and server-side APIs. For PCI compliance, never pass raw card numbers through your server—use Stripe Elements or the Payment Intents API. Webhooks are essential for handling asynchronous events like payment succeeded or subscription renewed. Configure your webhook endpoint to verify signatures using the Stripe-Signature header. ## ShipStation Integration The ShipStation API is REST-based. Authentication uses API key and API secret in the Authorization header. Endpoints cover orders, shipments, carriers, and warehouses. Poll for new orders or use webhooks if available for your plan. Batch operations are supported for bulk label creation. ## Twilio SMS Integration Twilio's REST API requires Account SID and Auth Token. The Messaging API endpoint is /2010-04-01/Accounts/{AccountSid}/Messages.json. For two-way messaging, configure a webhook URL to receive incoming messages. Consider using a queue for high-volume outbound SMS to avoid rate limits. # PentaCodes Technical Reference and Integration Documentation # Version 1.0 | Last Updated March 2025 # This document contains technical reference material for common integrations and deployment procedures. ## QuickBooks Online Integration The QuickBooks Online API uses OAuth 2.0 for authentication. You will need to register your application in the Intuit Developer Portal to obtain client credentials. The base URL for the API is https://quickbooks.api.intuit.com/v3/company/{realmId}. Common endpoints include /invoice, /customer, /payment, and /bill. Rate limits apply: 500 requests per minute for production apps. Always implement exponential backoff for 429 responses. ## Stripe Payment Integration Stripe provides both client-side (Stripe.js) and server-side APIs. For PCI compliance, never pass raw card numbers through your server—use Stripe Elements or the Payment Intents API. Webhooks are essential for handling asynchronous events like payment succeeded or subscription renewed. Configure your webhook endpoint to verify signatures using the Stripe-Signature header. ## ShipStation Integration The ShipStation API is REST-based. Authentication uses API key and API secret in the Authorization header. Endpoints cover orders, shipments, carriers, and warehouses. Poll for new orders or use webhooks if available for your plan. Batch operations are supported for bulk label creation. ## Twilio SMS Integration Twilio's REST API requires Account SID and Auth Token. The Messaging API endpoint is /2010-04-01/Accounts/{AccountSid}/Messages.json. For two-way messaging, configure a webhook URL to receive incoming messages. Consider using a queue for high-volume outbound SMS to avoid rate limits. # PentaCodes Technical Reference and Integration Documentation # Version 1.0 | Last Updated March 2025 # This document contains technical reference material for common integrations and deployment procedures. ## QuickBooks Online Integration The QuickBooks Online API uses OAuth 2.0 for authentication. You will need to register your application in the Intuit Developer Portal to obtain client credentials. The base URL for the API is https://quickbooks.api.intuit.com/v3/company/{realmId}. Common endpoints include /invoice, /customer, /payment, and /bill. Rate limits apply: 500 requests per minute for production apps. Always implement exponential backoff for 429 responses. ## Stripe Payment Integration Stripe provides both client-side (Stripe.js) and server-side APIs. For PCI compliance, never pass raw card numbers through your server—use Stripe Elements or the Payment Intents API. Webhooks are essential for handling asynchronous events like payment succeeded or subscription renewed. Configure your webhook endpoint to verify signatures using the Stripe-Signature header. ## ShipStation Integration The ShipStation API is REST-based. Authentication uses API key and API secret in the Authorization header. Endpoints cover orders, shipments, carriers, and warehouses. Poll for new orders or use webhooks if available for your plan. Batch operations are supported for bulk label creation. ## Twilio SMS Integration Twilio's REST API requires Account SID and Auth Token. The Messaging API endpoint is /2010-04-01/Accounts/{AccountSid}/Messages.json. For two-way messaging, configure a webhook URL to receive incoming messages. Consider using a queue for high-volume outbound SMS to avoid rate limits. # PentaCodes Technical Reference and Integration Documentation # Version 1.0 | Last Updated March 2025 # This document contains technical reference material for common integrations and deployment procedures. ## QuickBooks Online Integration The QuickBooks Online API uses OAuth 2.0 for authentication. You will need to register your application in the Intuit Developer Portal to obtain client credentials. The base URL for the API is https://quickbooks.api.intuit.com/v3/company/{realmId}. Common endpoints include /invoice, /customer, /payment, and /bill. Rate limits apply: 500 requests per minute for production apps. Always implement exponential backoff for 429 responses. ## Stripe Payment Integration Stripe provides both client-side (Stripe.js) and server-side APIs. For PCI compliance, never pass raw card numbers through your server—use Stripe Elements or the Payment Intents API. Webhooks are essential for handling asynchronous events like payment succeeded or subscription renewed. Configure your webhook endpoint to verify signatures using the Stripe-Signature header. ## ShipStation Integration The ShipStation API is REST-based. Authentication uses API key and API secret in the Authorization header. Endpoints cover orders, shipments, carriers, and warehouses. Poll for new orders or use webhooks if available for your plan. Batch operations are supported for bulk label creation. ## Twilio SMS Integration Twilio's REST API requires Account SID and Auth Token. The Messaging API endpoint is /2010-04-01/Accounts/{AccountSid}/Messages.json. For two-way messaging, configure a webhook URL to receive incoming messages. Consider using a queue for high-volume outbound SMS to avoid rate limits. # PentaCodes Technical Reference and Integration Documentation # Version 1.0 | Last Updated March 2025 # This document contains technical reference material for common integrations and deployment procedures. ## QuickBooks Online Integration The QuickBooks Online API uses OAuth 2.0 for authentication. You will need to register your application in the Intuit Developer Portal to obtain client credentials. The base URL for the API is https://quickbooks.api.intuit.com/v3/company/{realmId}. Common endpoints include /invoice, /customer, /payment, and /bill. Rate limits apply: 500 requests per minute for production apps. Always implement exponential backoff for 429 responses. ## Stripe Payment Integration Stripe provides both client-side (Stripe.js) and server-side APIs. For PCI compliance, never pass raw card numbers through your server—use Stripe Elements or the Payment Intents API. Webhooks are essential for handling asynchronous events like payment succeeded or subscription renewed. Configure your webhook endpoint to verify signatures using the Stripe-Signature header. ## ShipStation Integration The ShipStation API is REST-based. Authentication uses API key and API secret in the Authorization header. Endpoints cover orders, shipments, carriers, and warehouses. Poll for new orders or use webhooks if available for your plan. Batch operations are supported for bulk label creation. ## Twilio SMS Integration Twilio's REST API requires Account SID and Auth Token. The Messaging API endpoint is /2010-04-01/Accounts/{AccountSid}/Messages.json. For two-way messaging, configure a webhook URL to receive incoming messages. Consider using a queue for high-volume outbound SMS to avoid rate limits. # PentaCodes Technical Reference and Integration Documentation # Version 1.0 | Last Updated March 2025 # This document contains technical reference material for common integrations and deployment procedures. ## QuickBooks Online Integration The QuickBooks Online API uses OAuth 2.0 for authentication. You will need to register your application in the Intuit Developer Portal to obtain client credentials. The base URL for the API is https://quickbooks.api.intuit.com/v3/company/{realmId}. Common endpoints include /invoice, /customer, /payment, and /bill. Rate limits apply: 500 requests per minute for production apps. Always implement exponential backoff for 429 responses. ## Stripe Payment Integration Stripe provides both client-side (Stripe.js) and server-side APIs. For PCI compliance, never pass raw card numbers through your server—use Stripe Elements or the Payment Intents API. Webhooks are essential for handling asynchronous events like payment succeeded or subscription renewed. Configure your webhook endpoint to verify signatures using the Stripe-Signature header. ## ShipStation Integration The ShipStation API is REST-based. Authentication uses API key and API secret in the Authorization header. Endpoints cover orders, shipments, carriers, and warehouses. Poll for new orders or use webhooks if available for your plan. Batch operations are supported for bulk label creation. ## Twilio SMS Integration Twilio's REST API requires Account SID and Auth Token. The Messaging API endpoint is /2010-04-01/Accounts/{AccountSid}/Messages.json. For two-way messaging, configure a webhook URL to receive incoming messages. Consider using a queue for high-volume outbound SMS to avoid rate limits. # PentaCodes Technical Reference and Integration Documentation # Version 1.0 | Last Updated March 2025 # This document contains technical reference material for common integrations and deployment procedures. ## QuickBooks Online Integration The QuickBooks Online API uses OAuth 2.0 for authentication. You will need to register your application in the Intuit Developer Portal to obtain client credentials. The base URL for the API is https://quickbooks.api.intuit.com/v3/company/{realmId}. Common endpoints include /invoice, /customer, /payment, and /bill. Rate limits apply: 500 requests per minute for production apps. Always implement exponential backoff for 429 responses. ## Stripe Payment Integration Stripe provides both client-side (Stripe.js) and server-side APIs. For PCI compliance, never pass raw card numbers through your server—use Stripe Elements or the Payment Intents API. Webhooks are essential for handling asynchronous events like payment succeeded or subscription renewed. Configure your webhook endpoint to verify signatures using the Stripe-Signature header. ## ShipStation Integration The ShipStation API is REST-based. Authentication uses API key and API secret in the Authorization header. Endpoints cover orders, shipments, carriers, and warehouses. Poll for new orders or use webhooks if available for your plan. Batch operations are supported for bulk label creation. ## Twilio SMS Integration Twilio's REST API requires Account SID and Auth Token. The Messaging API endpoint is /2010-04-01/Accounts/{AccountSid}/Messages.json. For two-way messaging, configure a webhook URL to receive incoming messages. Consider using a queue for high-volume outbound SMS to avoid rate limits. # PentaCodes Technical Reference and Integration Documentation # Version 1.0 | Last Updated March 2025 # This document contains technical reference material for common integrations and deployment procedures. ## QuickBooks Online Integration The QuickBooks Online API uses OAuth 2.0 for authentication. You will need to register your application in the Intuit Developer Portal to obtain client credentials. The base URL for the API is https://quickbooks.api.intuit.com/v3/company/{realmId}. Common endpoints include /invoice, /customer, /payment, and /bill. Rate limits apply: 500 requests per minute for production apps. Always implement exponential backoff for 429 responses. ## Stripe Payment Integration Stripe provides both client-side (Stripe.js) and server-side APIs. For PCI compliance, never pass raw card numbers through your server—use Stripe Elements or the Payment Intents API. Webhooks are essential for handling asynchronous events like payment succeeded or subscription renewed. Configure your webhook endpoint to verify signatures using the Stripe-Signature header. ## ShipStation Integration The ShipStation API is REST-based. Authentication uses API key and API secret in the Authorization header. Endpoints cover orders, shipments, carriers, and warehouses. Poll for new orders or use webhooks if available for your plan. Batch operations are supported for bulk label creation. ## Twilio SMS Integration Twilio's REST API requires Account SID and Auth Token. The Messaging API endpoint is /2010-04-01/Accounts/{AccountSid}/Messages.json. For two-way messaging, configure a webhook URL to receive incoming messages. Consider using a queue for high-volume outbound SMS to avoid rate limits. # PentaCodes Technical Reference and Integration Documentation # Version 1.0 | Last Updated March 2025 # This document contains technical reference material for common integrations and deployment procedures. ## QuickBooks Online Integration The QuickBooks Online API uses OAuth 2.0 for authentication. You will need to register your application in the Intuit Developer Portal to obtain client credentials. The base URL for the API is https://quickbooks.api.intuit.com/v3/company/{realmId}. Common endpoints include /invoice, /customer, /payment, and /bill. Rate limits apply: 500 requests per minute for production apps. Always implement exponential backoff for 429 responses. ## Stripe Payment Integration Stripe provides both client-side (Stripe.js) and server-side APIs. For PCI compliance, never pass raw card numbers through your server—use Stripe Elements or the Payment Intents API. Webhooks are essential for handling asynchronous events like payment succeeded or subscription renewed. Configure your webhook endpoint to verify signatures using the Stripe-Signature header. ## ShipStation Integration The ShipStation API is REST-based. Authentication uses API key and API secret in the Authorization header. Endpoints cover orders, shipments, carriers, and warehouses. Poll for new orders or use webhooks if available for your plan. Batch operations are supported for bulk label creation. ## Twilio SMS Integration Twilio's REST API requires Account SID and Auth Token. The Messaging API endpoint is /2010-04-01/Accounts/{AccountSid}/Messages.json. For two-way messaging, configure a webhook URL to receive incoming messages. Consider using a queue for high-volume outbound SMS to avoid rate limits. # PentaCodes Technical Reference and Integration Documentation # Version 1.0 | Last Updated March 2025 # This document contains technical reference material for common integrations and deployment procedures. ## QuickBooks Online Integration The QuickBooks Online API uses OAuth 2.0 for authentication. You will need to register your application in the Intuit Developer Portal to obtain client credentials. The base URL for the API is https://quickbooks.api.intuit.com/v3/company/{realmId}. Common endpoints include /invoice, /customer, /payment, and /bill. Rate limits apply: 500 requests per minute for production apps. Always implement exponential backoff for 429 responses. ## Stripe Payment Integration Stripe provides both client-side (Stripe.js) and server-side APIs. For PCI compliance, never pass raw card numbers through your server—use Stripe Elements or the Payment Intents API. Webhooks are essential for handling asynchronous events like payment succeeded or subscription renewed. Configure your webhook endpoint to verify signatures using the Stripe-Signature header. ## ShipStation Integration The ShipStation API is REST-based. Authentication uses API key and API secret in the Authorization header. Endpoints cover orders, shipments, carriers, and warehouses. Poll for new orders or use webhooks if available for your plan. Batch operations are supported for bulk label creation. ## Twilio SMS Integration Twilio's REST API requires Account SID and Auth Token. The Messaging API endpoint is /2010-04-01/Accounts/{AccountSid}/Messages.json. For two-way messaging, configure a webhook URL to receive incoming messages. Consider using a queue for high-volume outbound SMS to avoid rate limits. # PentaCodes Technical Reference and Integration Documentation # Version 1.0 | Last Updated March 2025 # This document contains technical reference material for common integrations and deployment procedures. ## QuickBooks Online Integration The QuickBooks Online API uses OAuth 2.0 for authentication. You will need to register your application in the Intuit Developer Portal to obtain client credentials. The base URL for the API is https://quickbooks.api.intuit.com/v3/company/{realmId}. Common endpoints include /invoice, /customer, /payment, and /bill. Rate limits apply: 500 requests per minute for production apps. Always implement exponential backoff for 429 responses. ## Stripe Payment Integration Stripe provides both client-side (Stripe.js) and server-side APIs. For PCI compliance, never pass raw card numbers through your server—use Stripe Elements or the Payment Intents API. Webhooks are essential for handling asynchronous events like payment succeeded or subscription renewed. Configure your webhook endpoint to verify signatures using the Stripe-Signature header. ## ShipStation Integration The ShipStation API is REST-based. Authentication uses API key and API secret in the Authorization header. Endpoints cover orders, shipments, carriers, and warehouses. Poll for new orders or use webhooks if available for your plan. Batch operations are supported for bulk label creation. ## Twilio SMS Integration Twilio's REST API requires Account SID and Auth Token. The Messaging API endpoint is /2010-04-01/Accounts/{AccountSid}/Messages.json. For two-way messaging, configure a webhook URL to receive incoming messages. Consider using a queue for high-volume outbound SMS to avoid rate limits. # PentaCodes Technical Reference and Integration Documentation # Version 1.0 | Last Updated March 2025 # This document contains technical reference material for common integrations and deployment procedures. ## QuickBooks Online Integration The QuickBooks Online API uses OAuth 2.0 for authentication. You will need to register your application in the Intuit Developer Portal to obtain client credentials. The base URL for the API is https://quickbooks.api.intuit.com/v3/company/{realmId}. Common endpoints include /invoice, /customer, /payment, and /bill. Rate limits apply: 500 requests per minute for production apps. Always implement exponential backoff for 429 responses. ## Stripe Payment Integration Stripe provides both client-side (Stripe.js) and server-side APIs. For PCI compliance, never pass raw card numbers through your server—use Stripe Elements or the Payment Intents API. Webhooks are essential for handling asynchronous events like payment succeeded or subscription renewed. Configure your webhook endpoint to verify signatures using the Stripe-Signature header. ## ShipStation Integration The ShipStation API is REST-based. Authentication uses API key and API secret in the Authorization header. Endpoints cover orders, shipments, carriers, and warehouses. Poll for new orders or use webhooks if available for your plan. Batch operations are supported for bulk label creation. ## Twilio SMS Integration Twilio's REST API requires Account SID and Auth Token. The Messaging API endpoint is /2010-04-01/Accounts/{AccountSid}/Messages.json. For two-way messaging, configure a webhook URL to receive incoming messages. Consider using a queue for high-volume outbound SMS to avoid rate limits. # PentaCodes Technical Reference and Integration Documentation # Version 1.0 | Last Updated March 2025 # This document contains technical reference material for common integrations and deployment procedures. ## QuickBooks Online Integration The QuickBooks Online API uses OAuth 2.0 for authentication. You will need to register your application in the Intuit Developer Portal to obtain client credentials. The base URL for the API is https://quickbooks.api.intuit.com/v3/company/{realmId}. Common endpoints include /invoice, /customer, /payment, and /bill. Rate limits apply: 500 requests per minute for production apps. Always implement exponential backoff for 429 responses. ## Stripe Payment Integration Stripe provides both client-side (Stripe.js) and server-side APIs. For PCI compliance, never pass raw card numbers through your server—use Stripe Elements or the Payment Intents API. Webhooks are essential for handling asynchronous events like payment succeeded or subscription renewed. Configure your webhook endpoint to verify signatures using the Stripe-Signature header. ## ShipStation Integration The ShipStation API is REST-based. Authentication uses API key and API secret in the Authorization header. Endpoints cover orders, shipments, carriers, and warehouses. Poll for new orders or use webhooks if available for your plan. Batch operations are supported for bulk label creation. ## Twilio SMS Integration Twilio's REST API requires Account SID and Auth Token. The Messaging API endpoint is /2010-04-01/Accounts/{AccountSid}/Messages.json. For two-way messaging, configure a webhook URL to receive incoming messages. Consider using a queue for high-volume outbound SMS to avoid rate limits. # PentaCodes Technical Reference and Integration Documentation # Version 1.0 | Last Updated March 2025 # This document contains technical reference material for common integrations and deployment procedures. ## QuickBooks Online Integration The QuickBooks Online API uses OAuth 2.0 for authentication. You will need to register your application in the Intuit Developer Portal to obtain client credentials. The base URL for the API is https://quickbooks.api.intuit.com/v3/company/{realmId}. Common endpoints include /invoice, /customer, /payment, and /bill. Rate limits apply: 500 requests per minute for production apps. Always implement exponential backoff for 429 responses. ## Stripe Payment Integration Stripe provides both client-side (Stripe.js) and server-side APIs. For PCI compliance, never pass raw card numbers through your server—use Stripe Elements or the Payment Intents API. Webhooks are essential for handling asynchronous events like payment succeeded or subscription renewed. Configure your webhook endpoint to verify signatures using the Stripe-Signature header. ## ShipStation Integration The ShipStation API is REST-based. Authentication uses API key and API secret in the Authorization header. Endpoints cover orders, shipments, carriers, and warehouses. Poll for new orders or use webhooks if available for your plan. Batch operations are supported for bulk label creation. ## Twilio SMS Integration Twilio's REST API requires Account SID and Auth Token. The Messaging API endpoint is /2010-04-01/Accounts/{AccountSid}/Messages.json. For two-way messaging, configure a webhook URL to receive incoming messages. Consider using a queue for high-volume outbound SMS to avoid rate limits. # PentaCodes Technical Reference and Integration Documentation # Version 1.0 | Last Updated March 2025 # This document contains technical reference material for common integrations and deployment procedures. ## QuickBooks Online Integration The QuickBooks Online API uses OAuth 2.0 for authentication. You will need to register your application in the Intuit Developer Portal to obtain client credentials. The base URL for the API is https://quickbooks.api.intuit.com/v3/company/{realmId}. Common endpoints include /invoice, /customer, /payment, and /bill. Rate limits apply: 500 requests per minute for production apps. Always implement exponential backoff for 429 responses. ## Stripe Payment Integration Stripe provides both client-side (Stripe.js) and server-side APIs. For PCI compliance, never pass raw card numbers through your server—use Stripe Elements or the Payment Intents API. Webhooks are essential for handling asynchronous events like payment succeeded or subscription renewed. Configure your webhook endpoint to verify signatures using the Stripe-Signature header. ## ShipStation Integration The ShipStation API is REST-based. Authentication uses API key and API secret in the Authorization header. Endpoints cover orders, shipments, carriers, and warehouses. Poll for new orders or use webhooks if available for your plan. Batch operations are supported for bulk label creation. ## Twilio SMS Integration Twilio's REST API requires Account SID and Auth Token. The Messaging API endpoint is /2010-04-01/Accounts/{AccountSid}/Messages.json. For two-way messaging, configure a webhook URL to receive incoming messages. Consider using a queue for high-volume outbound SMS to avoid rate limits. # PentaCodes Technical Reference and Integration Documentation # Version 1.0 | Last Updated March 2025 # This document contains technical reference material for common integrations and deployment procedures. ## QuickBooks Online Integration The QuickBooks Online API uses OAuth 2.0 for authentication. You will need to register your application in the Intuit Developer Portal to obtain client credentials. The base URL for the API is https://quickbooks.api.intuit.com/v3/company/{realmId}. Common endpoints include /invoice, /customer, /payment, and /bill. Rate limits apply: 500 requests per minute for production apps. Always implement exponential backoff for 429 responses. ## Stripe Payment Integration Stripe provides both client-side (Stripe.js) and server-side APIs. For PCI compliance, never pass raw card numbers through your server—use Stripe Elements or the Payment Intents API. Webhooks are essential for handling asynchronous events like payment succeeded or subscription renewed. Configure your webhook endpoint to verify signatures using the Stripe-Signature header. ## ShipStation Integration The ShipStation API is REST-based. Authentication uses API key and API secret in the Authorization header. Endpoints cover orders, shipments, carriers, and warehouses. Poll for new orders or use webhooks if available for your plan. Batch operations are supported for bulk label creation. ## Twilio SMS Integration Twilio's REST API requires Account SID and Auth Token. The Messaging API endpoint is /2010-04-01/Accounts/{AccountSid}/Messages.json. For two-way messaging, configure a webhook URL to receive incoming messages. Consider using a queue for high-volume outbound SMS to avoid rate limits. # PentaCodes Technical Reference and Integration Documentation # Version 1.0 | Last Updated March 2025 # This document contains technical reference material for common integrations and deployment procedures. ## QuickBooks Online Integration The QuickBooks Online API uses OAuth 2.0 for authentication. You will need to register your application in the Intuit Developer Portal to obtain client credentials. The base URL for the API is https://quickbooks.api.intuit.com/v3/company/{realmId}. Common endpoints include /invoice, /customer, /payment, and /bill. Rate limits apply: 500 requests per minute for production apps. Always implement exponential backoff for 429 responses. ## Stripe Payment Integration Stripe provides both client-side (Stripe.js) and server-side APIs. For PCI compliance, never pass raw card numbers through your server—use Stripe Elements or the Payment Intents API. Webhooks are essential for handling asynchronous events like payment succeeded or subscription renewed. Configure your webhook endpoint to verify signatures using the Stripe-Signature header. ## ShipStation Integration The ShipStation API is REST-based. Authentication uses API key and API secret in the Authorization header. Endpoints cover orders, shipments, carriers, and warehouses. Poll for new orders or use webhooks if available for your plan. Batch operations are supported for bulk label creation. ## Twilio SMS Integration Twilio's REST API requires Account SID and Auth Token. The Messaging API endpoint is /2010-04-01/Accounts/{AccountSid}/Messages.json. For two-way messaging, configure a webhook URL to receive incoming messages. Consider using a queue for high-volume outbound SMS to avoid rate limits. # PentaCodes Technical Reference and Integration Documentation # Version 1.0 | Last Updated March 2025 # This document contains technical reference material for common integrations and deployment procedures. ## QuickBooks Online Integration The QuickBooks Online API uses OAuth 2.0 for authentication. You will need to register your application in the Intuit Developer Portal to obtain client credentials. The base URL for the API is https://quickbooks.api.intuit.com/v3/company/{realmId}. Common endpoints include /invoice, /customer, /payment, and /bill. Rate limits apply: 500 requests per minute for production apps. Always implement exponential backoff for 429 responses. ## Stripe Payment Integration Stripe provides both client-side (Stripe.js) and server-side APIs. For PCI compliance, never pass raw card numbers through your server—use Stripe Elements or the Payment Intents API. Webhooks are essential for handling asynchronous events like payment succeeded or subscription renewed. Configure your webhook endpoint to verify signatures using the Stripe-Signature header. ## ShipStation Integration The ShipStation API is REST-based. Authentication uses API key and API secret in the Authorization header. Endpoints cover orders, shipments, carriers, and warehouses. Poll for new orders or use webhooks if available for your plan. Batch operations are supported for bulk label creation. ## Twilio SMS Integration Twilio's REST API requires Account SID and Auth Token. The Messaging API endpoint is /2010-04-01/Accounts/{AccountSid}/Messages.json. For two-way messaging, configure a webhook URL to receive incoming messages. Consider using a queue for high-volume outbound SMS to avoid rate limits. # PentaCodes Technical Reference and Integration Documentation # Version 1.0 | Last Updated March 2025 # This document contains technical reference material for common integrations and deployment procedures. ## QuickBooks Online Integration The QuickBooks Online API uses OAuth 2.0 for authentication. You will need to register your application in the Intuit Developer Portal to obtain client credentials. The base URL for the API is https://quickbooks.api.intuit.com/v3/company/{realmId}. Common endpoints include /invoice, /customer, /payment, and /bill. Rate limits apply: 500 requests per minute for production apps. Always implement exponential backoff for 429 responses. ## Stripe Payment Integration Stripe provides both client-side (Stripe.js) and server-side APIs. For PCI compliance, never pass raw card numbers through your server—use Stripe Elements or the Payment Intents API. Webhooks are essential for handling asynchronous events like payment succeeded or subscription renewed. Configure your webhook endpoint to verify signatures using the Stripe-Signature header. ## ShipStation Integration The ShipStation API is REST-based. Authentication uses API key and API secret in the Authorization header. Endpoints cover orders, shipments, carriers, and warehouses. Poll for new orders or use webhooks if available for your plan. Batch operations are supported for bulk label creation. ## Twilio SMS Integration Twilio's REST API requires Account SID and Auth Token. The Messaging API endpoint is /2010-04-01/Accounts/{AccountSid}/Messages.json. For two-way messaging, configure a webhook URL to receive incoming messages. Consider using a queue for high-volume outbound SMS to avoid rate limits. # PentaCodes Technical Reference and Integration Documentation # Version 1.0 | Last Updated March 2025 # This document contains technical reference material for common integrations and deployment procedures. ## QuickBooks Online Integration The QuickBooks Online API uses OAuth 2.0 for authentication. You will need to register your application in the Intuit Developer Portal to obtain client credentials. The base URL for the API is https://quickbooks.api.intuit.com/v3/company/{realmId}. Common endpoints include /invoice, /customer, /payment, and /bill. Rate limits apply: 500 requests per minute for production apps. Always implement exponential backoff for 429 responses. ## Stripe Payment Integration Stripe provides both client-side (Stripe.js) and server-side APIs. For PCI compliance, never pass raw card numbers through your server—use Stripe Elements or the Payment Intents API. Webhooks are essential for handling asynchronous events like payment succeeded or subscription renewed. Configure your webhook endpoint to verify signatures using the Stripe-Signature header. ## ShipStation Integration The ShipStation API is REST-based. Authentication uses API key and API secret in the Authorization header. Endpoints cover orders, shipments, carriers, and warehouses. Poll for new orders or use webhooks if available for your plan. Batch operations are supported for bulk label creation. ## Twilio SMS Integration Twilio's REST API requires Account SID and Auth Token. The Messaging API endpoint is /2010-04-01/Accounts/{AccountSid}/Messages.json. For two-way messaging, configure a webhook URL to receive incoming messages. Consider using a queue for high-volume outbound SMS to avoid rate limits. # PentaCodes Technical Reference and Integration Documentation # Version 1.0 | Last Updated March 2025 # This document contains technical reference material for common integrations and deployment procedures. ## QuickBooks Online Integration The QuickBooks Online API uses OAuth 2.0 for authentication. You will need to register your application in the Intuit Developer Portal to obtain client credentials. The base URL for the API is https://quickbooks.api.intuit.com/v3/company/{realmId}. Common endpoints include /invoice, /customer, /payment, and /bill. Rate limits apply: 500 requests per minute for production apps. Always implement exponential backoff for 429 responses. ## Stripe Payment Integration Stripe provides both client-side (Stripe.js) and server-side APIs. For PCI compliance, never pass raw card numbers through your server—use Stripe Elements or the Payment Intents API. Webhooks are essential for handling asynchronous events like payment succeeded or subscription renewed. Configure your webhook endpoint to verify signatures using the Stripe-Signature header. ## ShipStation Integration The ShipStation API is REST-based. Authentication uses API key and API secret in the Authorization header. Endpoints cover orders, shipments, carriers, and warehouses. Poll for new orders or use webhooks if available for your plan. Batch operations are supported for bulk label creation. ## Twilio SMS Integration Twilio's REST API requires Account SID and Auth Token. The Messaging API endpoint is /2010-04-01/Accounts/{AccountSid}/Messages.json. For two-way messaging, configure a webhook URL to receive incoming messages. Consider using a queue for high-volume outbound SMS to avoid rate limits. # PentaCodes Technical Reference and Integration Documentation # Version 1.0 | Last Updated March 2025 # This document contains technical reference material for common integrations and deployment procedures. ## QuickBooks Online Integration The QuickBooks Online API uses OAuth 2.0 for authentication. You will need to register your application in the Intuit Developer Portal to obtain client credentials. The base URL for the API is https://quickbooks.api.intuit.com/v3/company/{realmId}. Common endpoints include /invoice, /customer, /payment, and /bill. Rate limits apply: 500 requests per minute for production apps. Always implement exponential backoff for 429 responses. ## Stripe Payment Integration Stripe provides both client-side (Stripe.js) and server-side APIs. For PCI compliance, never pass raw card numbers through your server—use Stripe Elements or the Payment Intents API. Webhooks are essential for handling asynchronous events like payment succeeded or subscription renewed. Configure your webhook endpoint to verify signatures using the Stripe-Signature header. ## ShipStation Integration The ShipStation API is REST-based. Authentication uses API key and API secret in the Authorization header. Endpoints cover orders, shipments, carriers, and warehouses. Poll for new orders or use webhooks if available for your plan. Batch operations are supported for bulk label creation. ## Twilio SMS Integration Twilio's REST API requires Account SID and Auth Token. The Messaging API endpoint is /2010-04-01/Accounts/{AccountSid}/Messages.json. For two-way messaging, configure a webhook URL to receive incoming messages. Consider using a queue for high-volume outbound SMS to avoid rate limits. # PentaCodes Technical Reference and Integration Documentation # Version 1.0 | Last Updated March 2025 # This document contains technical reference material for common integrations and deployment procedures. ## QuickBooks Online Integration The QuickBooks Online API uses OAuth 2.0 for authentication. You will need to register your application in the Intuit Developer Portal to obtain client credentials. The base URL for the API is https://quickbooks.api.intuit.com/v3/company/{realmId}. Common endpoints include /invoice, /customer, /payment, and /bill. Rate limits apply: 500 requests per minute for production apps. Always implement exponential backoff for 429 responses. ## Stripe Payment Integration Stripe provides both client-side (Stripe.js) and server-side APIs. For PCI compliance, never pass raw card numbers through your server—use Stripe Elements or the Payment Intents API. Webhooks are essential for handling asynchronous events like payment succeeded or subscription renewed. Configure your webhook endpoint to verify signatures using the Stripe-Signature header. ## ShipStation Integration The ShipStation API is REST-based. Authentication uses API key and API secret in the Authorization header. Endpoints cover orders, shipments, carriers, and warehouses. Poll for new orders or use webhooks if available for your plan. Batch operations are supported for bulk label creation. ## Twilio SMS Integration Twilio's REST API requires Account SID and Auth Token. The Messaging API endpoint is /2010-04-01/Accounts/{AccountSid}/Messages.json. For two-way messaging, configure a webhook URL to receive incoming messages. Consider using a queue for high-volume outbound SMS to avoid rate limits. # PentaCodes Technical Reference and Integration Documentation # Version 1.0 | Last Updated March 2025 # This document contains technical reference material for common integrations and deployment procedures. ## QuickBooks Online Integration The QuickBooks Online API uses OAuth 2.0 for authentication. You will need to register your application in the Intuit Developer Portal to obtain client credentials. The base URL for the API is https://quickbooks.api.intuit.com/v3/company/{realmId}. Common endpoints include /invoice, /customer, /payment, and /bill. Rate limits apply: 500 requests per minute for production apps. Always implement exponential backoff for 429 responses. ## Stripe Payment Integration Stripe provides both client-side (Stripe.js) and server-side APIs. For PCI compliance, never pass raw card numbers through your server—use Stripe Elements or the Payment Intents API. Webhooks are essential for handling asynchronous events like payment succeeded or subscription renewed. Configure your webhook endpoint to verify signatures using the Stripe-Signature header. ## ShipStation Integration The ShipStation API is REST-based. Authentication uses API key and API secret in the Authorization header. Endpoints cover orders, shipments, carriers, and warehouses. Poll for new orders or use webhooks if available for your plan. Batch operations are supported for bulk label creation. ## Twilio SMS Integration Twilio's REST API requires Account SID and Auth Token. The Messaging API endpoint is /2010-04-01/Accounts/{AccountSid}/Messages.json. For two-way messaging, configure a webhook URL to receive incoming messages. Consider using a queue for high-volume outbound SMS to avoid rate limits. # PentaCodes Technical Reference and Integration Documentation # Version 1.0 | Last Updated March 2025 # This document contains technical reference material for common integrations and deployment procedures. ## QuickBooks Online Integration The QuickBooks Online API uses OAuth 2.0 for authentication. You will need to register your application in the Intuit Developer Portal to obtain client credentials. The base URL for the API is https://quickbooks.api.intuit.com/v3/company/{realmId}. Common endpoints include /invoice, /customer, /payment, and /bill. Rate limits apply: 500 requests per minute for production apps. Always implement exponential backoff for 429 responses. ## Stripe Payment Integration Stripe provides both client-side (Stripe.js) and server-side APIs. For PCI compliance, never pass raw card numbers through your server—use Stripe Elements or the Payment Intents API. Webhooks are essential for handling asynchronous events like payment succeeded or subscription renewed. Configure your webhook endpoint to verify signatures using the Stripe-Signature header. ## ShipStation Integration The ShipStation API is REST-based. Authentication uses API key and API secret in the Authorization header. Endpoints cover orders, shipments, carriers, and warehouses. Poll for new orders or use webhooks if available for your plan. Batch operations are supported for bulk label creation. ## Twilio SMS Integration Twilio's REST API requires Account SID and Auth Token. The Messaging API endpoint is /2010-04-01/Accounts/{AccountSid}/Messages.json. For two-way messaging, configure a webhook URL to receive incoming messages. Consider using a queue for high-volume outbound SMS to avoid rate limits. # PentaCodes Technical Reference and Integration Documentation # Version 1.0 | Last Updated March 2025 # This document contains technical reference material for common integrations and deployment procedures. ## QuickBooks Online Integration The QuickBooks Online API uses OAuth 2.0 for authentication. You will need to register your application in the Intuit Developer Portal to obtain client credentials. The base URL for the API is https://quickbooks.api.intuit.com/v3/company/{realmId}. Common endpoints include /invoice, /customer, /payment, and /bill. Rate limits apply: 500 requests per minute for production apps. Always implement exponential backoff for 429 responses. ## Stripe Payment Integration Stripe provides both client-side (Stripe.js) and server-side APIs. For PCI compliance, never pass raw card numbers through your server—use Stripe Elements or the Payment Intents API. Webhooks are essential for handling asynchronous events like payment succeeded or subscription renewed. Configure your webhook endpoint to verify signatures using the Stripe-Signature header. ## ShipStation Integration The ShipStation API is REST-based. Authentication uses API key and API secret in the Authorization header. Endpoints cover orders, shipments, carriers, and warehouses. Poll for new orders or use webhooks if available for your plan. Batch operations are supported for bulk label creation. ## Twilio SMS Integration Twilio's REST API requires Account SID and Auth Token. The Messaging API endpoint is /2010-04-01/Accounts/{AccountSid}/Messages.json. For two-way messaging, configure a webhook URL to receive incoming messages. Consider using a queue for high-volume outbound SMS to avoid rate limits. # PentaCodes Technical Reference and Integration Documentation # Version 1.0 | Last Updated March 2025 # This document contains technical reference material for common integrations and deployment procedures. ## QuickBooks Online Integration The QuickBooks Online API uses OAuth 2.0 for authentication. You will need to register your application in the Intuit Developer Portal to obtain client credentials. The base URL for the API is https://quickbooks.api.intuit.com/v3/company/{realmId}. Common endpoints include /invoice, /customer, /payment, and /bill. Rate limits apply: 500 requests per minute for production apps. Always implement exponential backoff for 429 responses. ## Stripe Payment Integration Stripe provides both client-side (Stripe.js) and server-side APIs. For PCI compliance, never pass raw card numbers through your server—use Stripe Elements or the Payment Intents API. Webhooks are essential for handling asynchronous events like payment succeeded or subscription renewed. Configure your webhook endpoint to verify signatures using the Stripe-Signature header. ## ShipStation Integration The ShipStation API is REST-based. Authentication uses API key and API secret in the Authorization header. Endpoints cover orders, shipments, carriers, and warehouses. Poll for new orders or use webhooks if available for your plan. Batch operations are supported for bulk label creation. ## Twilio SMS Integration Twilio's REST API requires Account SID and Auth Token. The Messaging API endpoint is /2010-04-01/Accounts/{AccountSid}/Messages.json. For two-way messaging, configure a webhook URL to receive incoming messages. Consider using a queue for high-volume outbound SMS to avoid rate limits. # PentaCodes Technical Reference and Integration Documentation # Version 1.0 | Last Updated March 2025 # This document contains technical reference material for common integrations and deployment procedures. ## QuickBooks Online Integration The QuickBooks Online API uses OAuth 2.0 for authentication. You will need to register your application in the Intuit Developer Portal to obtain client credentials. The base URL for the API is https://quickbooks.api.intuit.com/v3/company/{realmId}. Common endpoints include /invoice, /customer, /payment, and /bill. Rate limits apply: 500 requests per minute for production apps. Always implement exponential backoff for 429 responses. ## Stripe Payment Integration Stripe provides both client-side (Stripe.js) and server-side APIs. For PCI compliance, never pass raw card numbers through your server—use Stripe Elements or the Payment Intents API. Webhooks are essential for handling asynchronous events like payment succeeded or subscription renewed. Configure your webhook endpoint to verify signatures using the Stripe-Signature header. ## ShipStation Integration The ShipStation API is REST-based. Authentication uses API key and API secret in the Authorization header. Endpoints cover orders, shipments, carriers, and warehouses. Poll for new orders or use webhooks if available for your plan. Batch operations are supported for bulk label creation. ## Twilio SMS Integration Twilio's REST API requires Account SID and Auth Token. The Messaging API endpoint is /2010-04-01/Accounts/{AccountSid}/Messages.json. For two-way messaging, configure a webhook URL to receive incoming messages. Consider using a queue for high-volume outbound SMS to avoid rate limits. # PentaCodes Technical Reference and Integration Documentation # Version 1.0 | Last Updated March 2025 # This document contains technical reference material for common integrations and deployment procedures. ## QuickBooks Online Integration The QuickBooks Online API uses OAuth 2.0 for authentication. You will need to register your application in the Intuit Developer Portal to obtain client credentials. The base URL for the API is https://quickbooks.api.intuit.com/v3/company/{realmId}. Common endpoints include /invoice, /customer, /payment, and /bill. Rate limits apply: 500 requests per minute for production apps. Always implement exponential backoff for 429 responses. ## Stripe Payment Integration Stripe provides both client-side (Stripe.js) and server-side APIs. For PCI compliance, never pass raw card numbers through your server—use Stripe Elements or the Payment Intents API. Webhooks are essential for handling asynchronous events like payment succeeded or subscription renewed. Configure your webhook endpoint to verify signatures using the Stripe-Signature header. ## ShipStation Integration The ShipStation API is REST-based. Authentication uses API key and API secret in the Authorization header. Endpoints cover orders, shipments, carriers, and warehouses. Poll for new orders or use webhooks if available for your plan. Batch operations are supported for bulk label creation. ## Twilio SMS Integration Twilio's REST API requires Account SID and Auth Token. The Messaging API endpoint is /2010-04-01/Accounts/{AccountSid}/Messages.json. For two-way messaging, configure a webhook URL to receive incoming messages. Consider using a queue for high-volume outbound SMS to avoid rate limits. # PentaCodes Technical Reference and Integration Documentation # Version 1.0 | Last Updated March 2025 # This document contains technical reference material for common integrations and deployment procedures. ## QuickBooks Online Integration The QuickBooks Online API uses OAuth 2.0 for authentication. You will need to register your application in the Intuit Developer Portal to obtain client credentials. The base URL for the API is https://quickbooks.api.intuit.com/v3/company/{realmId}. Common endpoints include /invoice, /customer, /payment, and /bill. Rate limits apply: 500 requests per minute for production apps. Always implement exponential backoff for 429 responses. ## Stripe Payment Integration Stripe provides both client-side (Stripe.js) and server-side APIs. For PCI compliance, never pass raw card numbers through your server—use Stripe Elements or the Payment Intents API. Webhooks are essential for handling asynchronous events like payment succeeded or subscription renewed. Configure your webhook endpoint to verify signatures using the Stripe-Signature header. ## ShipStation Integration The ShipStation API is REST-based. Authentication uses API key and API secret in the Authorization header. Endpoints cover orders, shipments, carriers, and warehouses. Poll for new orders or use webhooks if available for your plan. Batch operations are supported for bulk label creation. ## Twilio SMS Integration Twilio's REST API requires Account SID and Auth Token. The Messaging API endpoint is /2010-04-01/Accounts/{AccountSid}/Messages.json. For two-way messaging, configure a webhook URL to receive incoming messages. Consider using a queue for high-volume outbound SMS to avoid rate limits. # PentaCodes Technical Reference and Integration Documentation # Version 1.0 | Last Updated March 2025 # This document contains technical reference material for common integrations and deployment procedures. ## QuickBooks Online Integration The QuickBooks Online API uses OAuth 2.0 for authentication. You will need to register your application in the Intuit Developer Portal to obtain client credentials. The base URL for the API is https://quickbooks.api.intuit.com/v3/company/{realmId}. Common endpoints include /invoice, /customer, /payment, and /bill. Rate limits apply: 500 requests per minute for production apps. Always implement exponential backoff for 429 responses. ## Stripe Payment Integration Stripe provides both client-side (Stripe.js) and server-side APIs. For PCI compliance, never pass raw card numbers through your server—use Stripe Elements or the Payment Intents API. Webhooks are essential for handling asynchronous events like payment succeeded or subscription renewed. Configure your webhook endpoint to verify signatures using the Stripe-Signature header. ## ShipStation Integration The ShipStation API is REST-based. Authentication uses API key and API secret in the Authorization header. Endpoints cover orders, shipments, carriers, and warehouses. Poll for new orders or use webhooks if available for your plan. Batch operations are supported for bulk label creation. ## Twilio SMS Integration Twilio's REST API requires Account SID and Auth Token. The Messaging API endpoint is /2010-04-01/Accounts/{AccountSid}/Messages.json. For two-way messaging, configure a webhook URL to receive incoming messages. Consider using a queue for high-volume outbound SMS to avoid rate limits. # PentaCodes Technical Reference and Integration Documentation # Version 1.0 | Last Updated March 2025 # This document contains technical reference material for common integrations and deployment procedures. ## QuickBooks Online Integration The QuickBooks Online API uses OAuth 2.0 for authentication. You will need to register your application in the Intuit Developer Portal to obtain client credentials. The base URL for the API is https://quickbooks.api.intuit.com/v3/company/{realmId}. Common endpoints include /invoice, /customer, /payment, and /bill. Rate limits apply: 500 requests per minute for production apps. Always implement exponential backoff for 429 responses. ## Stripe Payment Integration Stripe provides both client-side (Stripe.js) and server-side APIs. For PCI compliance, never pass raw card numbers through your server—use Stripe Elements or the Payment Intents API. Webhooks are essential for handling asynchronous events like payment succeeded or subscription renewed. Configure your webhook endpoint to verify signatures using the Stripe-Signature header. ## ShipStation Integration The ShipStation API is REST-based. Authentication uses API key and API secret in the Authorization header. Endpoints cover orders, shipments, carriers, and warehouses. Poll for new orders or use webhooks if available for your plan. Batch operations are supported for bulk label creation. ## Twilio SMS Integration Twilio's REST API requires Account SID and Auth Token. The Messaging API endpoint is /2010-04-01/Accounts/{AccountSid}/Messages.json. For two-way messaging, configure a webhook URL to receive incoming messages. Consider using a queue for high-volume outbound SMS to avoid rate limits. # PentaCodes Technical Reference and Integration Documentation # Version 1.0 | Last Updated March 2025 # This document contains technical reference material for common integrations and deployment procedures. ## QuickBooks Online Integration The QuickBooks Online API uses OAuth 2.0 for authentication. You will need to register your application in the Intuit Developer Portal to obtain client credentials. The base URL for the API is https://quickbooks.api.intuit.com/v3/company/{realmId}. Common endpoints include /invoice, /customer, /payment, and /bill. Rate limits apply: 500 requests per minute for production apps. Always implement exponential backoff for 429 responses. ## Stripe Payment Integration Stripe provides both client-side (Stripe.js) and server-side APIs. For PCI compliance, never pass raw card numbers through your server—use Stripe Elements or the Payment Intents API. Webhooks are essential for handling asynchronous events like payment succeeded or subscription renewed. Configure your webhook endpoint to verify signatures using the Stripe-Signature header. ## ShipStation Integration The ShipStation API is REST-based. Authentication uses API key and API secret in the Authorization header. Endpoints cover orders, shipments, carriers, and warehouses. Poll for new orders or use webhooks if available for your plan. Batch operations are supported for bulk label creation. ## Twilio SMS Integration Twilio's REST API requires Account SID and Auth Token. The Messaging API endpoint is /2010-04-01/Accounts/{AccountSid}/Messages.json. For two-way messaging, configure a webhook URL to receive incoming messages. Consider using a queue for high-volume outbound SMS to avoid rate limits. # PentaCodes Technical Reference and Integration Documentation # Version 1.0 | Last Updated March 2025 # This document contains technical reference material for common integrations and deployment procedures. ## QuickBooks Online Integration The QuickBooks Online API uses OAuth 2.0 for authentication. You will need to register your application in the Intuit Developer Portal to obtain client credentials. The base URL for the API is https://quickbooks.api.intuit.com/v3/company/{realmId}. Common endpoints include /invoice, /customer, /payment, and /bill. Rate limits apply: 500 requests per minute for production apps. Always implement exponential backoff for 429 responses. ## Stripe Payment Integration Stripe provides both client-side (Stripe.js) and server-side APIs. For PCI compliance, never pass raw card numbers through your server—use Stripe Elements or the Payment Intents API. Webhooks are essential for handling asynchronous events like payment succeeded or subscription renewed. Configure your webhook endpoint to verify signatures using the Stripe-Signature header. ## ShipStation Integration The ShipStation API is REST-based. Authentication uses API key and API secret in the Authorization header. Endpoints cover orders, shipments, carriers, and warehouses. Poll for new orders or use webhooks if available for your plan. Batch operations are supported for bulk label creation. ## Twilio SMS Integration Twilio's REST API requires Account SID and Auth Token. The Messaging API endpoint is /2010-04-01/Accounts/{AccountSid}/Messages.json. For two-way messaging, configure a webhook URL to receive incoming messages. Consider using a queue for high-volume outbound SMS to avoid rate limits. # PentaCodes Technical Reference and Integration Documentation # Version 1.0 | Last Updated March 2025 # This document contains technical reference material for common integrations and deployment procedures. ## QuickBooks Online Integration The QuickBooks Online API uses OAuth 2.0 for authentication. You will need to register your application in the Intuit Developer Portal to obtain client credentials. The base URL for the API is https://quickbooks.api.intuit.com/v3/company/{realmId}. Common endpoints include /invoice, /customer, /payment, and /bill. Rate limits apply: 500 requests per minute for production apps. Always implement exponential backoff for 429 responses. ## Stripe Payment Integration Stripe provides both client-side (Stripe.js) and server-side APIs. For PCI compliance, never pass raw card numbers through your server—use Stripe Elements or the Payment Intents API. Webhooks are essential for handling asynchronous events like payment succeeded or subscription renewed. Configure your webhook endpoint to verify signatures using the Stripe-Signature header. ## ShipStation Integration The ShipStation API is REST-based. Authentication uses API key and API secret in the Authorization header. Endpoints cover orders, shipments, carriers, and warehouses. Poll for new orders or use webhooks if available for your plan. Batch operations are supported for bulk label creation. ## Twilio SMS Integration Twilio's REST API requires Account SID and Auth Token. The Messaging API endpoint is /2010-04-01/Accounts/{AccountSid}/Messages.json. For two-way messaging, configure a webhook URL to receive incoming messages. Consider using a queue for high-volume outbound SMS to avoid rate limits. # PentaCodes Technical Reference and Integration Documentation # Version 1.0 | Last Updated March 2025 # This document contains technical reference material for common integrations and deployment procedures. ## QuickBooks Online Integration The QuickBooks Online API uses OAuth 2.0 for authentication. You will need to register your application in the Intuit Developer Portal to obtain client credentials. The base URL for the API is https://quickbooks.api.intuit.com/v3/company/{realmId}. Common endpoints include /invoice, /customer, /payment, and /bill. Rate limits apply: 500 requests per minute for production apps. Always implement exponential backoff for 429 responses. ## Stripe Payment Integration Stripe provides both client-side (Stripe.js) and server-side APIs. For PCI compliance, never pass raw card numbers through your server—use Stripe Elements or the Payment Intents API. Webhooks are essential for handling asynchronous events like payment succeeded or subscription renewed. Configure your webhook endpoint to verify signatures using the Stripe-Signature header. ## ShipStation Integration The ShipStation API is REST-based. Authentication uses API key and API secret in the Authorization header. Endpoints cover orders, shipments, carriers, and warehouses. Poll for new orders or use webhooks if available for your plan. Batch operations are supported for bulk label creation. ## Twilio SMS Integration Twilio's REST API requires Account SID and Auth Token. The Messaging API endpoint is /2010-04-01/Accounts/{AccountSid}/Messages.json. For two-way messaging, configure a webhook URL to receive incoming messages. Consider using a queue for high-volume outbound SMS to avoid rate limits. # PentaCodes Technical Reference and Integration Documentation # Version 1.0 | Last Updated March 2025 # This document contains technical reference material for common integrations and deployment procedures. ## QuickBooks Online Integration The QuickBooks Online API uses OAuth 2.0 for authentication. You will need to register your application in the Intuit Developer Portal to obtain client credentials. The base URL for the API is https://quickbooks.api.intuit.com/v3/company/{realmId}. Common endpoints include /invoice, /customer, /payment, and /bill. Rate limits apply: 500 requests per minute for production apps. Always implement exponential backoff for 429 responses. ## Stripe Payment Integration Stripe provides both client-side (Stripe.js) and server-side APIs. For PCI compliance, never pass raw card numbers through your server—use Stripe Elements or the Payment Intents API. Webhooks are essential for handling asynchronous events like payment succeeded or subscription renewed. Configure your webhook endpoint to verify signatures using the Stripe-Signature header. ## ShipStation Integration The ShipStation API is REST-based. Authentication uses API key and API secret in the Authorization header. Endpoints cover orders, shipments, carriers, and warehouses. Poll for new orders or use webhooks if available for your plan. Batch operations are supported for bulk label creation. ## Twilio SMS Integration Twilio's REST API requires Account SID and Auth Token. The Messaging API endpoint is /2010-04-01/Accounts/{AccountSid}/Messages.json. For two-way messaging, configure a webhook URL to receive incoming messages. Consider using a queue for high-volume outbound SMS to avoid rate limits. # PentaCodes Technical Reference and Integration Documentation # Version 1.0 | Last Updated March 2025 # This document contains technical reference material for common integrations and deployment procedures. ## QuickBooks Online Integration The QuickBooks Online API uses OAuth 2.0 for authentication. You will need to register your application in the Intuit Developer Portal to obtain client credentials. The base URL for the API is https://quickbooks.api.intuit.com/v3/company/{realmId}. Common endpoints include /invoice, /customer, /payment, and /bill. Rate limits apply: 500 requests per minute for production apps. Always implement exponential backoff for 429 responses. ## Stripe Payment Integration Stripe provides both client-side (Stripe.js) and server-side APIs. For PCI compliance, never pass raw card numbers through your server—use Stripe Elements or the Payment Intents API. Webhooks are essential for handling asynchronous events like payment succeeded or subscription renewed. Configure your webhook endpoint to verify signatures using the Stripe-Signature header. ## ShipStation Integration The ShipStation API is REST-based. Authentication uses API key and API secret in the Authorization header. Endpoints cover orders, shipments, carriers, and warehouses. Poll for new orders or use webhooks if available for your plan. Batch operations are supported for bulk label creation. ## Twilio SMS Integration Twilio's REST API requires Account SID and Auth Token. The Messaging API endpoint is /2010-04-01/Accounts/{AccountSid}/Messages.json. For two-way messaging, configure a webhook URL to receive incoming messages. Consider using a queue for high-volume outbound SMS to avoid rate limits. # PentaCodes Technical Reference and Integration Documentation # Version 1.0 | Last Updated March 2025 # This document contains technical reference material for common integrations and deployment procedures. ## QuickBooks Online Integration The QuickBooks Online API uses OAuth 2.0 for authentication. You will need to register your application in the Intuit Developer Portal to obtain client credentials. The base URL for the API is https://quickbooks.api.intuit.com/v3/company/{realmId}. Common endpoints include /invoice, /customer, /payment, and /bill. Rate limits apply: 500 requests per minute for production apps. Always implement exponential backoff for 429 responses. ## Stripe Payment Integration Stripe provides both client-side (Stripe.js) and server-side APIs. For PCI compliance, never pass raw card numbers through your server—use Stripe Elements or the Payment Intents API. Webhooks are essential for handling asynchronous events like payment succeeded or subscription renewed. Configure your webhook endpoint to verify signatures using the Stripe-Signature header. ## ShipStation Integration The ShipStation API is REST-based. Authentication uses API key and API secret in the Authorization header. Endpoints cover orders, shipments, carriers, and warehouses. Poll for new orders or use webhooks if available for your plan. Batch operations are supported for bulk label creation. ## Twilio SMS Integration Twilio's REST API requires Account SID and Auth Token. The Messaging API endpoint is /2010-04-01/Accounts/{AccountSid}/Messages.json. For two-way messaging, configure a webhook URL to receive incoming messages. Consider using a queue for high-volume outbound SMS to avoid rate limits. # PentaCodes Technical Reference and Integration Documentation # Version 1.0 | Last Updated March 2025 # This document contains technical reference material for common integrations and deployment procedures. ## QuickBooks Online Integration The QuickBooks Online API uses OAuth 2.0 for authentication. You will need to register your application in the Intuit Developer Portal to obtain client credentials. The base URL for the API is https://quickbooks.api.intuit.com/v3/company/{realmId}. Common endpoints include /invoice, /customer, /payment, and /bill. Rate limits apply: 500 requests per minute for production apps. Always implement exponential backoff for 429 responses. ## Stripe Payment Integration Stripe provides both client-side (Stripe.js) and server-side APIs. For PCI compliance, never pass raw card numbers through your server—use Stripe Elements or the Payment Intents API. Webhooks are essential for handling asynchronous events like payment succeeded or subscription renewed. Configure your webhook endpoint to verify signatures using the Stripe-Signature header. ## ShipStation Integration The ShipStation API is REST-based. Authentication uses API key and API secret in the Authorization header. Endpoints cover orders, shipments, carriers, and warehouses. Poll for new orders or use webhooks if available for your plan. Batch operations are supported for bulk label creation. ## Twilio SMS Integration Twilio's REST API requires Account SID and Auth Token. The Messaging API endpoint is /2010-04-01/Accounts/{AccountSid}/Messages.json. For two-way messaging, configure a webhook URL to receive incoming messages. Consider using a queue for high-volume outbound SMS to avoid rate limits. # PentaCodes Technical Reference and Integration Documentation # Version 1.0 | Last Updated March 2025 # This document contains technical reference material for common integrations and deployment procedures. ## QuickBooks Online Integration The QuickBooks Online API uses OAuth 2.0 for authentication. You will need to register your application in the Intuit Developer Portal to obtain client credentials. The base URL for the API is https://quickbooks.api.intuit.com/v3/company/{realmId}. Common endpoints include /invoice, /customer, /payment, and /bill. Rate limits apply: 500 requests per minute for production apps. Always implement exponential backoff for 429 responses. ## Stripe Payment Integration Stripe provides both client-side (Stripe.js) and server-side APIs. For PCI compliance, never pass raw card numbers through your server—use Stripe Elements or the Payment Intents API. Webhooks are essential for handling asynchronous events like payment succeeded or subscription renewed. Configure your webhook endpoint to verify signatures using the Stripe-Signature header. ## ShipStation Integration The ShipStation API is REST-based. Authentication uses API key and API secret in the Authorization header. Endpoints cover orders, shipments, carriers, and warehouses. Poll for new orders or use webhooks if available for your plan. Batch operations are supported for bulk label creation. ## Twilio SMS Integration Twilio's REST API requires Account SID and Auth Token. The Messaging API endpoint is /2010-04-01/Accounts/{AccountSid}/Messages.json. For two-way messaging, configure a webhook URL to receive incoming messages. Consider using a queue for high-volume outbound SMS to avoid rate limits. # PentaCodes Technical Reference and Integration Documentation # Version 1.0 | Last Updated March 2025 # This document contains technical reference material for common integrations and deployment procedures. ## QuickBooks Online Integration The QuickBooks Online API uses OAuth 2.0 for authentication. You will need to register your application in the Intuit Developer Portal to obtain client credentials. The base URL for the API is https://quickbooks.api.intuit.com/v3/company/{realmId}. Common endpoints include /invoice, /customer, /payment, and /bill. Rate limits apply: 500 requests per minute for production apps. Always implement exponential backoff for 429 responses. ## Stripe Payment Integration Stripe provides both client-side (Stripe.js) and server-side APIs. For PCI compliance, never pass raw card numbers through your server—use Stripe Elements or the Payment Intents API. Webhooks are essential for handling asynchronous events like payment succeeded or subscription renewed. Configure your webhook endpoint to verify signatures using the Stripe-Signature header. ## ShipStation Integration The ShipStation API is REST-based. Authentication uses API key and API secret in the Authorization header. Endpoints cover orders, shipments, carriers, and warehouses. Poll for new orders or use webhooks if available for your plan. Batch operations are supported for bulk label creation. ## Twilio SMS Integration Twilio's REST API requires Account SID and Auth Token. The Messaging API endpoint is /2010-04-01/Accounts/{AccountSid}/Messages.json. For two-way messaging, configure a webhook URL to receive incoming messages. Consider using a queue for high-volume outbound SMS to avoid rate limits. # PentaCodes Technical Reference and Integration Documentation # Version 1.0 | Last Updated March 2025 # This document contains technical reference material for common integrations and deployment procedures. ## QuickBooks Online Integration The QuickBooks Online API uses OAuth 2.0 for authentication. You will need to register your application in the Intuit Developer Portal to obtain client credentials. The base URL for the API is https://quickbooks.api.intuit.com/v3/company/{realmId}. Common endpoints include /invoice, /customer, /payment, and /bill. Rate limits apply: 500 requests per minute for production apps. Always implement exponential backoff for 429 responses. ## Stripe Payment Integration Stripe provides both client-side (Stripe.js) and server-side APIs. For PCI compliance, never pass raw card numbers through your server—use Stripe Elements or the Payment Intents API. Webhooks are essential for handling asynchronous events like payment succeeded or subscription renewed. Configure your webhook endpoint to verify signatures using the Stripe-Signature header. ## ShipStation Integration The ShipStation API is REST-based. Authentication uses API key and API secret in the Authorization header. Endpoints cover orders, shipments, carriers, and warehouses. Poll for new orders or use webhooks if available for your plan. Batch operations are supported for bulk label creation. ## Twilio SMS Integration Twilio's REST API requires Account SID and Auth Token. The Messaging API endpoint is /2010-04-01/Accounts/{AccountSid}/Messages.json. For two-way messaging, configure a webhook URL to receive incoming messages. Consider using a queue for high-volume outbound SMS to avoid rate limits. # PentaCodes Technical Reference and Integration Documentation # Version 1.0 | Last Updated March 2025 # This document contains technical reference material for common integrations and deployment procedures. ## QuickBooks Online Integration The QuickBooks Online API uses OAuth 2.0 for authentication. You will need to register your application in the Intuit Developer Portal to obtain client credentials. The base URL for the API is https://quickbooks.api.intuit.com/v3/company/{realmId}. Common endpoints include /invoice, /customer, /payment, and /bill. Rate limits apply: 500 requests per minute for production apps. Always implement exponential backoff for 429 responses. ## Stripe Payment Integration Stripe provides both client-side (Stripe.js) and server-side APIs. For PCI compliance, never pass raw card numbers through your server—use Stripe Elements or the Payment Intents API. Webhooks are essential for handling asynchronous events like payment succeeded or subscription renewed. Configure your webhook endpoint to verify signatures using the Stripe-Signature header. ## ShipStation Integration The ShipStation API is REST-based. Authentication uses API key and API secret in the Authorization header. Endpoints cover orders, shipments, carriers, and warehouses. Poll for new orders or use webhooks if available for your plan. Batch operations are supported for bulk label creation. ## Twilio SMS Integration Twilio's REST API requires Account SID and Auth Token. The Messaging API endpoint is /2010-04-01/Accounts/{AccountSid}/Messages.json. For two-way messaging, configure a webhook URL to receive incoming messages. Consider using a queue for high-volume outbound SMS to avoid rate limits. # PentaCodes Technical Reference and Integration Documentation # Version 1.0 | Last Updated March 2025 # This document contains technical reference material for common integrations and deployment procedures. ## QuickBooks Online Integration The QuickBooks Online API uses OAuth 2.0 for authentication. You will need to register your application in the Intuit Developer Portal to obtain client credentials. The base URL for the API is https://quickbooks.api.intuit.com/v3/company/{realmId}. Common endpoints include /invoice, /customer, /payment, and /bill. Rate limits apply: 500 requests per minute for production apps. Always implement exponential backoff for 429 responses. ## Stripe Payment Integration Stripe provides both client-side (Stripe.js) and server-side APIs. For PCI compliance, never pass raw card numbers through your server—use Stripe Elements or the Payment Intents API. Webhooks are essential for handling asynchronous events like payment succeeded or subscription renewed. Configure your webhook endpoint to verify signatures using the Stripe-Signature header. ## ShipStation Integration The ShipStation API is REST-based. Authentication uses API key and API secret in the Authorization header. Endpoints cover orders, shipments, carriers, and warehouses. Poll for new orders or use webhooks if available for your plan. Batch operations are supported for bulk label creation. ## Twilio SMS Integration Twilio's REST API requires Account SID and Auth Token. The Messaging API endpoint is /2010-04-01/Accounts/{AccountSid}/Messages.json. For two-way messaging, configure a webhook URL to receive incoming messages. Consider using a queue for high-volume outbound SMS to avoid rate limits. # PentaCodes Technical Reference and Integration Documentation # Version 1.0 | Last Updated March 2025 # This document contains technical reference material for common integrations and deployment procedures. ## QuickBooks Online Integration The QuickBooks Online API uses OAuth 2.0 for authentication. You will need to register your application in the Intuit Developer Portal to obtain client credentials. The base URL for the API is https://quickbooks.api.intuit.com/v3/company/{realmId}. Common endpoints include /invoice, /customer, /payment, and /bill. Rate limits apply: 500 requests per minute for production apps. Always implement exponential backoff for 429 responses. ## Stripe Payment Integration Stripe provides both client-side (Stripe.js) and server-side APIs. For PCI compliance, never pass raw card numbers through your server—use Stripe Elements or the Payment Intents API. Webhooks are essential for handling asynchronous events like payment succeeded or subscription renewed. Configure your webhook endpoint to verify signatures using the Stripe-Signature header. ## ShipStation Integration The ShipStation API is REST-based. Authentication uses API key and API secret in the Authorization header. Endpoints cover orders, shipments, carriers, and warehouses. Poll for new orders or use webhooks if available for your plan. Batch operations are supported for bulk label creation. ## Twilio SMS Integration Twilio's REST API requires Account SID and Auth Token. The Messaging API endpoint is /2010-04-01/Accounts/{AccountSid}/Messages.json. For two-way messaging, configure a webhook URL to receive incoming messages. Consider using a queue for high-volume outbound SMS to avoid rate limits. # PentaCodes Technical Reference and Integration Documentation # Version 1.0 | Last Updated March 2025 # This document contains technical reference material for common integrations and deployment procedures. ## QuickBooks Online Integration The QuickBooks Online API uses OAuth 2.0 for authentication. You will need to register your application in the Intuit Developer Portal to obtain client credentials. The base URL for the API is https://quickbooks.api.intuit.com/v3/company/{realmId}. Common endpoints include /invoice, /customer, /payment, and /bill. Rate limits apply: 500 requests per minute for production apps. Always implement exponential backoff for 429 responses. ## Stripe Payment Integration Stripe provides both client-side (Stripe.js) and server-side APIs. For PCI compliance, never pass raw card numbers through your server—use Stripe Elements or the Payment Intents API. Webhooks are essential for handling asynchronous events like payment succeeded or subscription renewed. Configure your webhook endpoint to verify signatures using the Stripe-Signature header. ## ShipStation Integration The ShipStation API is REST-based. Authentication uses API key and API secret in the Authorization header. Endpoints cover orders, shipments, carriers, and warehouses. Poll for new orders or use webhooks if available for your plan. Batch operations are supported for bulk label creation. ## Twilio SMS Integration Twilio's REST API requires Account SID and Auth Token. The Messaging API endpoint is /2010-04-01/Accounts/{AccountSid}/Messages.json. For two-way messaging, configure a webhook URL to receive incoming messages. Consider using a queue for high-volume outbound SMS to avoid rate limits. # PentaCodes Technical Reference and Integration Documentation # Version 1.0 | Last Updated March 2025 # This document contains technical reference material for common integrations and deployment procedures. ## QuickBooks Online Integration The QuickBooks Online API uses OAuth 2.0 for authentication. You will need to register your application in the Intuit Developer Portal to obtain client credentials. The base URL for the API is https://quickbooks.api.intuit.com/v3/company/{realmId}. Common endpoints include /invoice, /customer, /payment, and /bill. Rate limits apply: 500 requests per minute for production apps. Always implement exponential backoff for 429 responses. ## Stripe Payment Integration Stripe provides both client-side (Stripe.js) and server-side APIs. For PCI compliance, never pass raw card numbers through your server—use Stripe Elements or the Payment Intents API. Webhooks are essential for handling asynchronous events like payment succeeded or subscription renewed. Configure your webhook endpoint to verify signatures using the Stripe-Signature header. ## ShipStation Integration The ShipStation API is REST-based. Authentication uses API key and API secret in the Authorization header. Endpoints cover orders, shipments, carriers, and warehouses. Poll for new orders or use webhooks if available for your plan. Batch operations are supported for bulk label creation. ## Twilio SMS Integration Twilio's REST API requires Account SID and Auth Token. The Messaging API endpoint is /2010-04-01/Accounts/{AccountSid}/Messages.json. For two-way messaging, configure a webhook URL to receive incoming messages. Consider using a queue for high-volume outbound SMS to avoid rate limits. # PentaCodes Technical Reference and Integration Documentation # Version 1.0 | Last Updated March 2025 # This document contains technical reference material for common integrations and deployment procedures. ## QuickBooks Online Integration The QuickBooks Online API uses OAuth 2.0 for authentication. You will need to register your application in the Intuit Developer Portal to obtain client credentials. The base URL for the API is https://quickbooks.api.intuit.com/v3/company/{realmId}. Common endpoints include /invoice, /customer, /payment, and /bill. Rate limits apply: 500 requests per minute for production apps. Always implement exponential backoff for 429 responses. ## Stripe Payment Integration Stripe provides both client-side (Stripe.js) and server-side APIs. For PCI compliance, never pass raw card numbers through your server—use Stripe Elements or the Payment Intents API. Webhooks are essential for handling asynchronous events like payment succeeded or subscription renewed. Configure your webhook endpoint to verify signatures using the Stripe-Signature header. ## ShipStation Integration The ShipStation API is REST-based. Authentication uses API key and API secret in the Authorization header. Endpoints cover orders, shipments, carriers, and warehouses. Poll for new orders or use webhooks if available for your plan. Batch operations are supported for bulk label creation. ## Twilio SMS Integration Twilio's REST API requires Account SID and Auth Token. The Messaging API endpoint is /2010-04-01/Accounts/{AccountSid}/Messages.json. For two-way messaging, configure a webhook URL to receive incoming messages. Consider using a queue for high-volume outbound SMS to avoid rate limits. # PentaCodes Technical Reference and Integration Documentation # Version 1.0 | Last Updated March 2025 # This document contains technical reference material for common integrations and deployment procedures. ## QuickBooks Online Integration The QuickBooks Online API uses OAuth 2.0 for authentication. You will need to register your application in the Intuit Developer Portal to obtain client credentials. The base URL for the API is https://quickbooks.api.intuit.com/v3/company/{realmId}. Common endpoints include /invoice, /customer, /payment, and /bill. Rate limits apply: 500 requests per minute for production apps. Always implement exponential backoff for 429 responses. ## Stripe Payment Integration Stripe provides both client-side (Stripe.js) and server-side APIs. For PCI compliance, never pass raw card numbers through your server—use Stripe Elements or the Payment Intents API. Webhooks are essential for handling asynchronous events like payment succeeded or subscription renewed. Configure your webhook endpoint to verify signatures using the Stripe-Signature header. ## ShipStation Integration The ShipStation API is REST-based. Authentication uses API key and API secret in the Authorization header. Endpoints cover orders, shipments, carriers, and warehouses. Poll for new orders or use webhooks if available for your plan. Batch operations are supported for bulk label creation. ## Twilio SMS Integration Twilio's REST API requires Account SID and Auth Token. The Messaging API endpoint is /2010-04-01/Accounts/{AccountSid}/Messages.json. For two-way messaging, configure a webhook URL to receive incoming messages. Consider using a queue for high-volume outbound SMS to avoid rate limits. # PentaCodes Technical Reference and Integration Documentation # Version 1.0 | Last Updated March 2025 # This document contains technical reference material for common integrations and deployment procedures. ## QuickBooks Online Integration The QuickBooks Online API uses OAuth 2.0 for authentication. You will need to register your application in the Intuit Developer Portal to obtain client credentials. The base URL for the API is https://quickbooks.api.intuit.com/v3/company/{realmId}. Common endpoints include /invoice, /customer, /payment, and /bill. Rate limits apply: 500 requests per minute for production apps. Always implement exponential backoff for 429 responses. ## Stripe Payment Integration Stripe provides both client-side (Stripe.js) and server-side APIs. For PCI compliance, never pass raw card numbers through your server—use Stripe Elements or the Payment Intents API. Webhooks are essential for handling asynchronous events like payment succeeded or subscription renewed. Configure your webhook endpoint to verify signatures using the Stripe-Signature header. ## ShipStation Integration The ShipStation API is REST-based. Authentication uses API key and API secret in the Authorization header. Endpoints cover orders, shipments, carriers, and warehouses. Poll for new orders or use webhooks if available for your plan. Batch operations are supported for bulk label creation. ## Twilio SMS Integration Twilio's REST API requires Account SID and Auth Token. The Messaging API endpoint is /2010-04-01/Accounts/{AccountSid}/Messages.json. For two-way messaging, configure a webhook URL to receive incoming messages. Consider using a queue for high-volume outbound SMS to avoid rate limits. # PentaCodes Technical Reference and Integration Documentation # Version 1.0 | Last Updated March 2025 # This document contains technical reference material for common integrations and deployment procedures. ## QuickBooks Online Integration The QuickBooks Online API uses OAuth 2.0 for authentication. You will need to register your application in the Intuit Developer Portal to obtain client credentials. The base URL for the API is https://quickbooks.api.intuit.com/v3/company/{realmId}. Common endpoints include /invoice, /customer, /payment, and /bill. Rate limits apply: 500 requests per minute for production apps. Always implement exponential backoff for 429 responses. ## Stripe Payment Integration Stripe provides both client-side (Stripe.js) and server-side APIs. For PCI compliance, never pass raw card numbers through your server—use Stripe Elements or the Payment Intents API. Webhooks are essential for handling asynchronous events like payment succeeded or subscription renewed. Configure your webhook endpoint to verify signatures using the Stripe-Signature header. ## ShipStation Integration The ShipStation API is REST-based. Authentication uses API key and API secret in the Authorization header. Endpoints cover orders, shipments, carriers, and warehouses. Poll for new orders or use webhooks if available for your plan. Batch operations are supported for bulk label creation. ## Twilio SMS Integration Twilio's REST API requires Account SID and Auth Token. The Messaging API endpoint is /2010-04-01/Accounts/{AccountSid}/Messages.json. For two-way messaging, configure a webhook URL to receive incoming messages. Consider using a queue for high-volume outbound SMS to avoid rate limits. # PentaCodes Technical Reference and Integration Documentation # Version 1.0 | Last Updated March 2025 # This document contains technical reference material for common integrations and deployment procedures. ## QuickBooks Online Integration The QuickBooks Online API uses OAuth 2.0 for authentication. You will need to register your application in the Intuit Developer Portal to obtain client credentials. The base URL for the API is https://quickbooks.api.intuit.com/v3/company/{realmId}. Common endpoints include /invoice, /customer, /payment, and /bill. Rate limits apply: 500 requests per minute for production apps. Always implement exponential backoff for 429 responses. ## Stripe Payment Integration Stripe provides both client-side (Stripe.js) and server-side APIs. For PCI compliance, never pass raw card numbers through your server—use Stripe Elements or the Payment Intents API. Webhooks are essential for handling asynchronous events like payment succeeded or subscription renewed. Configure your webhook endpoint to verify signatures using the Stripe-Signature header. ## ShipStation Integration The ShipStation API is REST-based. Authentication uses API key and API secret in the Authorization header. Endpoints cover orders, shipments, carriers, and warehouses. Poll for new orders or use webhooks if available for your plan. Batch operations are supported for bulk label creation. ## Twilio SMS Integration Twilio's REST API requires Account SID and Auth Token. The Messaging API endpoint is /2010-04-01/Accounts/{AccountSid}/Messages.json. For two-way messaging, configure a webhook URL to receive incoming messages. Consider using a queue for high-volume outbound SMS to avoid rate limits. # PentaCodes Technical Reference and Integration Documentation # Version 1.0 | Last Updated March 2025 # This document contains technical reference material for common integrations and deployment procedures. ## QuickBooks Online Integration The QuickBooks Online API uses OAuth 2.0 for authentication. You will need to register your application in the Intuit Developer Portal to obtain client credentials. The base URL for the API is https://quickbooks.api.intuit.com/v3/company/{realmId}. Common endpoints include /invoice, /customer, /payment, and /bill. Rate limits apply: 500 requests per minute for production apps. Always implement exponential backoff for 429 responses. ## Stripe Payment Integration Stripe provides both client-side (Stripe.js) and server-side APIs. For PCI compliance, never pass raw card numbers through your server—use Stripe Elements or the Payment Intents API. Webhooks are essential for handling asynchronous events like payment succeeded or subscription renewed. Configure your webhook endpoint to verify signatures using the Stripe-Signature header. ## ShipStation Integration The ShipStation API is REST-based. Authentication uses API key and API secret in the Authorization header. Endpoints cover orders, shipments, carriers, and warehouses. Poll for new orders or use webhooks if available for your plan. Batch operations are supported for bulk label creation. ## Twilio SMS Integration Twilio's REST API requires Account SID and Auth Token. The Messaging API endpoint is /2010-04-01/Accounts/{AccountSid}/Messages.json. For two-way messaging, configure a webhook URL to receive incoming messages. Consider using a queue for high-volume outbound SMS to avoid rate limits. # PentaCodes Technical Reference and Integration Documentation # Version 1.0 | Last Updated March 2025 # This document contains technical reference material for common integrations and deployment procedures. ## QuickBooks Online Integration The QuickBooks Online API uses OAuth 2.0 for authentication. You will need to register your application in the Intuit Developer Portal to obtain client credentials. The base URL for the API is https://quickbooks.api.intuit.com/v3/company/{realmId}. Common endpoints include /invoice, /customer, /payment, and /bill. Rate limits apply: 500 requests per minute for production apps. Always implement exponential backoff for 429 responses. ## Stripe Payment Integration Stripe provides both client-side (Stripe.js) and server-side APIs. For PCI compliance, never pass raw card numbers through your server—use Stripe Elements or the Payment Intents API. Webhooks are essential for handling asynchronous events like payment succeeded or subscription renewed. Configure your webhook endpoint to verify signatures using the Stripe-Signature header. ## ShipStation Integration The ShipStation API is REST-based. Authentication uses API key and API secret in the Authorization header. Endpoints cover orders, shipments, carriers, and warehouses. Poll for new orders or use webhooks if available for your plan. Batch operations are supported for bulk label creation. ## Twilio SMS Integration Twilio's REST API requires Account SID and Auth Token. The Messaging API endpoint is /2010-04-01/Accounts/{AccountSid}/Messages.json. For two-way messaging, configure a webhook URL to receive incoming messages. Consider using a queue for high-volume outbound SMS to avoid rate limits. # PentaCodes Technical Reference and Integration Documentation # Version 1.0 | Last Updated March 2025 # This document contains technical reference material for common integrations and deployment procedures. ## QuickBooks Online Integration The QuickBooks Online API uses OAuth 2.0 for authentication. You will need to register your application in the Intuit Developer Portal to obtain client credentials. The base URL for the API is https://quickbooks.api.intuit.com/v3/company/{realmId}. Common endpoints include /invoice, /customer, /payment, and /bill. Rate limits apply: 500 requests per minute for production apps. Always implement exponential backoff for 429 responses. ## Stripe Payment Integration Stripe provides both client-side (Stripe.js) and server-side APIs. For PCI compliance, never pass raw card numbers through your server—use Stripe Elements or the Payment Intents API. Webhooks are essential for handling asynchronous events like payment succeeded or subscription renewed. Configure your webhook endpoint to verify signatures using the Stripe-Signature header. ## ShipStation Integration The ShipStation API is REST-based. Authentication uses API key and API secret in the Authorization header. Endpoints cover orders, shipments, carriers, and warehouses. Poll for new orders or use webhooks if available for your plan. Batch operations are supported for bulk label creation. ## Twilio SMS Integration Twilio's REST API requires Account SID and Auth Token. The Messaging API endpoint is /2010-04-01/Accounts/{AccountSid}/Messages.json. For two-way messaging, configure a webhook URL to receive incoming messages. Consider using a queue for high-volume outbound SMS to avoid rate limits. # PentaCodes Technical Reference and Integration Documentation # Version 1.0 | Last Updated March 2025 # This document contains technical reference material for common integrations and deployment procedures. ## QuickBooks Online Integration The QuickBooks Online API uses OAuth 2.0 for authentication. You will need to register your application in the Intuit Developer Portal to obtain client credentials. The base URL for the API is https://quickbooks.api.intuit.com/v3/company/{realmId}. Common endpoints include /invoice, /customer, /payment, and /bill. Rate limits apply: 500 requests per minute for production apps. Always implement exponential backoff for 429 responses. ## Stripe Payment Integration Stripe provides both client-side (Stripe.js) and server-side APIs. For PCI compliance, never pass raw card numbers through your server—use Stripe Elements or the Payment Intents API. Webhooks are essential for handling asynchronous events like payment succeeded or subscription renewed. Configure your webhook endpoint to verify signatures using the Stripe-Signature header. ## ShipStation Integration The ShipStation API is REST-based. Authentication uses API key and API secret in the Authorization header. Endpoints cover orders, shipments, carriers, and warehouses. Poll for new orders or use webhooks if available for your plan. Batch operations are supported for bulk label creation. ## Twilio SMS Integration Twilio's REST API requires Account SID and Auth Token. The Messaging API endpoint is /2010-04-01/Accounts/{AccountSid}/Messages.json. For two-way messaging, configure a webhook URL to receive incoming messages. Consider using a queue for high-volume outbound SMS to avoid rate limits. # PentaCodes Technical Reference and Integration Documentation # Version 1.0 | Last Updated March 2025 # This document contains technical reference material for common integrations and deployment procedures. ## QuickBooks Online Integration The QuickBooks Online API uses OAuth 2.0 for authentication. You will need to register your application in the Intuit Developer Portal to obtain client credentials. The base URL for the API is https://quickbooks.api.intuit.com/v3/company/{realmId}. Common endpoints include /invoice, /customer, /payment, and /bill. Rate limits apply: 500 requests per minute for production apps. Always implement exponential backoff for 429 responses. ## Stripe Payment Integration Stripe provides both client-side (Stripe.js) and server-side APIs. For PCI compliance, never pass raw card numbers through your server—use Stripe Elements or the Payment Intents API. Webhooks are essential for handling asynchronous events like payment succeeded or subscription renewed. Configure your webhook endpoint to verify signatures using the Stripe-Signature header. ## ShipStation Integration The ShipStation API is REST-based. Authentication uses API key and API secret in the Authorization header. Endpoints cover orders, shipments, carriers, and warehouses. Poll for new orders or use webhooks if available for your plan. Batch operations are supported for bulk label creation. ## Twilio SMS Integration Twilio's REST API requires Account SID and Auth Token. The Messaging API endpoint is /2010-04-01/Accounts/{AccountSid}/Messages.json. For two-way messaging, configure a webhook URL to receive incoming messages. Consider using a queue for high-volume outbound SMS to avoid rate limits. # PentaCodes Technical Reference and Integration Documentation # Version 1.0 | Last Updated March 2025 # This document contains technical reference material for common integrations and deployment procedures. ## QuickBooks Online Integration The QuickBooks Online API uses OAuth 2.0 for authentication. You will need to register your application in the Intuit Developer Portal to obtain client credentials. The base URL for the API is https://quickbooks.api.intuit.com/v3/company/{realmId}. Common endpoints include /invoice, /customer, /payment, and /bill. Rate limits apply: 500 requests per minute for production apps. Always implement exponential backoff for 429 responses. ## Stripe Payment Integration Stripe provides both client-side (Stripe.js) and server-side APIs. For PCI compliance, never pass raw card numbers through your server—use Stripe Elements or the Payment Intents API. Webhooks are essential for handling asynchronous events like payment succeeded or subscription renewed. Configure your webhook endpoint to verify signatures using the Stripe-Signature header. ## ShipStation Integration The ShipStation API is REST-based. Authentication uses API key and API secret in the Authorization header. Endpoints cover orders, shipments, carriers, and warehouses. Poll for new orders or use webhooks if available for your plan. Batch operations are supported for bulk label creation. ## Twilio SMS Integration Twilio's REST API requires Account SID and Auth Token. The Messaging API endpoint is /2010-04-01/Accounts/{AccountSid}/Messages.json. For two-way messaging, configure a webhook URL to receive incoming messages. Consider using a queue for high-volume outbound SMS to avoid rate limits. # PentaCodes Technical Reference and Integration Documentation # Version 1.0 | Last Updated March 2025 # This document contains technical reference material for common integrations and deployment procedures. ## QuickBooks Online Integration The QuickBooks Online API uses OAuth 2.0 for authentication. You will need to register your application in the Intuit Developer Portal to obtain client credentials. The base URL for the API is https://quickbooks.api.intuit.com/v3/company/{realmId}. Common endpoints include /invoice, /customer, /payment, and /bill. Rate limits apply: 500 requests per minute for production apps. Always implement exponential backoff for 429 responses. ## Stripe Payment Integration Stripe provides both client-side (Stripe.js) and server-side APIs. For PCI compliance, never pass raw card numbers through your server—use Stripe Elements or the Payment Intents API. Webhooks are essential for handling asynchronous events like payment succeeded or subscription renewed. Configure your webhook endpoint to verify signatures using the Stripe-Signature header. ## ShipStation Integration The ShipStation API is REST-based. Authentication uses API key and API secret in the Authorization header. Endpoints cover orders, shipments, carriers, and warehouses. Poll for new orders or use webhooks if available for your plan. Batch operations are supported for bulk label creation. ## Twilio SMS Integration Twilio's REST API requires Account SID and Auth Token. The Messaging API endpoint is /2010-04-01/Accounts/{AccountSid}/Messages.json. For two-way messaging, configure a webhook URL to receive incoming messages. Consider using a queue for high-volume outbound SMS to avoid rate limits. # PentaCodes Technical Reference and Integration Documentation # Version 1.0 | Last Updated March 2025 # This document contains technical reference material for common integrations and deployment procedures. ## QuickBooks Online Integration The QuickBooks Online API uses OAuth 2.0 for authentication. You will need to register your application in the Intuit Developer Portal to obtain client credentials. The base URL for the API is https://quickbooks.api.intuit.com/v3/company/{realmId}. Common endpoints include /invoice, /customer, /payment, and /bill. Rate limits apply: 500 requests per minute for production apps. Always implement exponential backoff for 429 responses. ## Stripe Payment Integration Stripe provides both client-side (Stripe.js) and server-side APIs. For PCI compliance, never pass raw card numbers through your server—use Stripe Elements or the Payment Intents API. Webhooks are essential for handling asynchronous events like payment succeeded or subscription renewed. Configure your webhook endpoint to verify signatures using the Stripe-Signature header. ## ShipStation Integration The ShipStation API is REST-based. Authentication uses API key and API secret in the Authorization header. Endpoints cover orders, shipments, carriers, and warehouses. Poll for new orders or use webhooks if available for your plan. Batch operations are supported for bulk label creation. ## Twilio SMS Integration Twilio's REST API requires Account SID and Auth Token. The Messaging API endpoint is /2010-04-01/Accounts/{AccountSid}/Messages.json. For two-way messaging, configure a webhook URL to receive incoming messages. Consider using a queue for high-volume outbound SMS to avoid rate limits. # PentaCodes Technical Reference and Integration Documentation # Version 1.0 | Last Updated March 2025 # This document contains technical reference material for common integrations and deployment procedures. ## QuickBooks Online Integration The QuickBooks Online API uses OAuth 2.0 for authentication. You will need to register your application in the Intuit Developer Portal to obtain client credentials. The base URL for the API is https://quickbooks.api.intuit.com/v3/company/{realmId}. Common endpoints include /invoice, /customer, /payment, and /bill. Rate limits apply: 500 requests per minute for production apps. Always implement exponential backoff for 429 responses. ## Stripe Payment Integration Stripe provides both client-side (Stripe.js) and server-side APIs. For PCI compliance, never pass raw card numbers through your server—use Stripe Elements or the Payment Intents API. Webhooks are essential for handling asynchronous events like payment succeeded or subscription renewed. Configure your webhook endpoint to verify signatures using the Stripe-Signature header. ## ShipStation Integration The ShipStation API is REST-based. Authentication uses API key and API secret in the Authorization header. Endpoints cover orders, shipments, carriers, and warehouses. Poll for new orders or use webhooks if available for your plan. Batch operations are supported for bulk label creation. ## Twilio SMS Integration Twilio's REST API requires Account SID and Auth Token. The Messaging API endpoint is /2010-04-01/Accounts/{AccountSid}/Messages.json. For two-way messaging, configure a webhook URL to receive incoming messages. Consider using a queue for high-volume outbound SMS to avoid rate limits. # PentaCodes Technical Reference and Integration Documentation # Version 1.0 | Last Updated March 2025 # This document contains technical reference material for common integrations and deployment procedures. ## QuickBooks Online Integration The QuickBooks Online API uses OAuth 2.0 for authentication. You will need to register your application in the Intuit Developer Portal to obtain client credentials. The base URL for the API is https://quickbooks.api.intuit.com/v3/company/{realmId}. Common endpoints include /invoice, /customer, /payment, and /bill. Rate limits apply: 500 requests per minute for production apps. Always implement exponential backoff for 429 responses. ## Stripe Payment Integration Stripe provides both client-side (Stripe.js) and server-side APIs. For PCI compliance, never pass raw card numbers through your server—use Stripe Elements or the Payment Intents API. Webhooks are essential for handling asynchronous events like payment succeeded or subscription renewed. Configure your webhook endpoint to verify signatures using the Stripe-Signature header. ## ShipStation Integration The ShipStation API is REST-based. Authentication uses API key and API secret in the Authorization header. Endpoints cover orders, shipments, carriers, and warehouses. Poll for new orders or use webhooks if available for your plan. Batch operations are supported for bulk label creation. ## Twilio SMS Integration Twilio's REST API requires Account SID and Auth Token. The Messaging API endpoint is /2010-04-01/Accounts/{AccountSid}/Messages.json. For two-way messaging, configure a webhook URL to receive incoming messages. Consider using a queue for high-volume outbound SMS to avoid rate limits. # PentaCodes Technical Reference and Integration Documentation # Version 1.0 | Last Updated March 2025 # This document contains technical reference material for common integrations and deployment procedures. ## QuickBooks Online Integration The QuickBooks Online API uses OAuth 2.0 for authentication. You will need to register your application in the Intuit Developer Portal to obtain client credentials. The base URL for the API is https://quickbooks.api.intuit.com/v3/company/{realmId}. Common endpoints include /invoice, /customer, /payment, and /bill. Rate limits apply: 500 requests per minute for production apps. Always implement exponential backoff for 429 responses. ## Stripe Payment Integration Stripe provides both client-side (Stripe.js) and server-side APIs. For PCI compliance, never pass raw card numbers through your server—use Stripe Elements or the Payment Intents API. Webhooks are essential for handling asynchronous events like payment succeeded or subscription renewed. Configure your webhook endpoint to verify signatures using the Stripe-Signature header. ## ShipStation Integration The ShipStation API is REST-based. Authentication uses API key and API secret in the Authorization header. Endpoints cover orders, shipments, carriers, and warehouses. Poll for new orders or use webhooks if available for your plan. Batch operations are supported for bulk label creation. ## Twilio SMS Integration Twilio's REST API requires Account SID and Auth Token. The Messaging API endpoint is /2010-04-01/Accounts/{AccountSid}/Messages.json. For two-way messaging, configure a webhook URL to receive incoming messages. Consider using a queue for high-volume outbound SMS to avoid rate limits. # PentaCodes Technical Reference and Integration Documentation # Version 1.0 | Last Updated March 2025 # This document contains technical reference material for common integrations and deployment procedures. ## QuickBooks Online Integration The QuickBooks Online API uses OAuth 2.0 for authentication. You will need to register your application in the Intuit Developer Portal to obtain client credentials. The base URL for the API is https://quickbooks.api.intuit.com/v3/company/{realmId}. Common endpoints include /invoice, /customer, /payment, and /bill. Rate limits apply: 500 requests per minute for production apps. Always implement exponential backoff for 429 responses. ## Stripe Payment Integration Stripe provides both client-side (Stripe.js) and server-side APIs. For PCI compliance, never pass raw card numbers through your server—use Stripe Elements or the Payment Intents API. Webhooks are essential for handling asynchronous events like payment succeeded or subscription renewed. Configure your webhook endpoint to verify signatures using the Stripe-Signature header. ## ShipStation Integration The ShipStation API is REST-based. Authentication uses API key and API secret in the Authorization header. Endpoints cover orders, shipments, carriers, and warehouses. Poll for new orders or use webhooks if available for your plan. Batch operations are supported for bulk label creation. ## Twilio SMS Integration Twilio's REST API requires Account SID and Auth Token. The Messaging API endpoint is /2010-04-01/Accounts/{AccountSid}/Messages.json. For two-way messaging, configure a webhook URL to receive incoming messages. Consider using a queue for high-volume outbound SMS to avoid rate limits. # PentaCodes Technical Reference and Integration Documentation # Version 1.0 | Last Updated March 2025 # This document contains technical reference material for common integrations and deployment procedures. ## QuickBooks Online Integration The QuickBooks Online API uses OAuth 2.0 for authentication. You will need to register your application in the Intuit Developer Portal to obtain client credentials. The base URL for the API is https://quickbooks.api.intuit.com/v3/company/{realmId}. Common endpoints include /invoice, /customer, /payment, and /bill. Rate limits apply: 500 requests per minute for production apps. Always implement exponential backoff for 429 responses. ## Stripe Payment Integration Stripe provides both client-side (Stripe.js) and server-side APIs. For PCI compliance, never pass raw card numbers through your server—use Stripe Elements or the Payment Intents API. Webhooks are essential for handling asynchronous events like payment succeeded or subscription renewed. Configure your webhook endpoint to verify signatures using the Stripe-Signature header. ## ShipStation Integration The ShipStation API is REST-based. Authentication uses API key and API secret in the Authorization header. Endpoints cover orders, shipments, carriers, and warehouses. Poll for new orders or use webhooks if available for your plan. Batch operations are supported for bulk label creation. ## Twilio SMS Integration Twilio's REST API requires Account SID and Auth Token. The Messaging API endpoint is /2010-04-01/Accounts/{AccountSid}/Messages.json. For two-way messaging, configure a webhook URL to receive incoming messages. Consider using a queue for high-volume outbound SMS to avoid rate limits. # PentaCodes Technical Reference and Integration Documentation # Version 1.0 | Last Updated March 2025 # This document contains technical reference material for common integrations and deployment procedures. ## QuickBooks Online Integration The QuickBooks Online API uses OAuth 2.0 for authentication. You will need to register your application in the Intuit Developer Portal to obtain client credentials. The base URL for the API is https://quickbooks.api.intuit.com/v3/company/{realmId}. Common endpoints include /invoice, /customer, /payment, and /bill. Rate limits apply: 500 requests per minute for production apps. Always implement exponential backoff for 429 responses. ## Stripe Payment Integration Stripe provides both client-side (Stripe.js) and server-side APIs. For PCI compliance, never pass raw card numbers through your server—use Stripe Elements or the Payment Intents API. Webhooks are essential for handling asynchronous events like payment succeeded or subscription renewed. Configure your webhook endpoint to verify signatures using the Stripe-Signature header. ## ShipStation Integration The ShipStation API is REST-based. Authentication uses API key and API secret in the Authorization header. Endpoints cover orders, shipments, carriers, and warehouses. Poll for new orders or use webhooks if available for your plan. Batch operations are supported for bulk label creation. ## Twilio SMS Integration Twilio's REST API requires Account SID and Auth Token. The Messaging API endpoint is /2010-04-01/Accounts/{AccountSid}/Messages.json. For two-way messaging, configure a webhook URL to receive incoming messages. Consider using a queue for high-volume outbound SMS to avoid rate limits. # PentaCodes Technical Reference and Integration Documentation # Version 1.0 | Last Updated March 2025 # This document contains technical reference material for common integrations and deployment procedures. ## QuickBooks Online Integration The QuickBooks Online API uses OAuth 2.0 for authentication. You will need to register your application in the Intuit Developer Portal to obtain client credentials. The base URL for the API is https://quickbooks.api.intuit.com/v3/company/{realmId}. Common endpoints include /invoice, /customer, /payment, and /bill. Rate limits apply: 500 requests per minute for production apps. Always implement exponential backoff for 429 responses. ## Stripe Payment Integration Stripe provides both client-side (Stripe.js) and server-side APIs. For PCI compliance, never pass raw card numbers through your server—use Stripe Elements or the Payment Intents API. Webhooks are essential for handling asynchronous events like payment succeeded or subscription renewed. Configure your webhook endpoint to verify signatures using the Stripe-Signature header. ## ShipStation Integration The ShipStation API is REST-based. Authentication uses API key and API secret in the Authorization header. Endpoints cover orders, shipments, carriers, and warehouses. Poll for new orders or use webhooks if available for your plan. Batch operations are supported for bulk label creation. ## Twilio SMS Integration Twilio's REST API requires Account SID and Auth Token. The Messaging API endpoint is /2010-04-01/Accounts/{AccountSid}/Messages.json. For two-way messaging, configure a webhook URL to receive incoming messages. Consider using a queue for high-volume outbound SMS to avoid rate limits. # PentaCodes Technical Reference and Integration Documentation # Version 1.0 | Last Updated March 2025 # This document contains technical reference material for common integrations and deployment procedures. ## QuickBooks Online Integration The QuickBooks Online API uses OAuth 2.0 for authentication. You will need to register your application in the Intuit Developer Portal to obtain client credentials. The base URL for the API is https://quickbooks.api.intuit.com/v3/company/{realmId}. Common endpoints include /invoice, /customer, /payment, and /bill. Rate limits apply: 500 requests per minute for production apps. Always implement exponential backoff for 429 responses. ## Stripe Payment Integration Stripe provides both client-side (Stripe.js) and server-side APIs. For PCI compliance, never pass raw card numbers through your server—use Stripe Elements or the Payment Intents API. Webhooks are essential for handling asynchronous events like payment succeeded or subscription renewed. Configure your webhook endpoint to verify signatures using the Stripe-Signature header. ## ShipStation Integration The ShipStation API is REST-based. Authentication uses API key and API secret in the Authorization header. Endpoints cover orders, shipments, carriers, and warehouses. Poll for new orders or use webhooks if available for your plan. Batch operations are supported for bulk label creation. ## Twilio SMS Integration Twilio's REST API requires Account SID and Auth Token. The Messaging API endpoint is /2010-04-01/Accounts/{AccountSid}/Messages.json. For two-way messaging, configure a webhook URL to receive incoming messages. Consider using a queue for high-volume outbound SMS to avoid rate limits. # PentaCodes Technical Reference and Integration Documentation # Version 1.0 | Last Updated March 2025 # This document contains technical reference material for common integrations and deployment procedures. ## QuickBooks Online Integration The QuickBooks Online API uses OAuth 2.0 for authentication. You will need to register your application in the Intuit Developer Portal to obtain client credentials. The base URL for the API is https://quickbooks.api.intuit.com/v3/company/{realmId}. Common endpoints include /invoice, /customer, /payment, and /bill. Rate limits apply: 500 requests per minute for production apps. Always implement exponential backoff for 429 responses. ## Stripe Payment Integration Stripe provides both client-side (Stripe.js) and server-side APIs. For PCI compliance, never pass raw card numbers through your server—use Stripe Elements or the Payment Intents API. Webhooks are essential for handling asynchronous events like payment succeeded or subscription renewed. Configure your webhook endpoint to verify signatures using the Stripe-Signature header. ## ShipStation Integration The ShipStation API is REST-based. Authentication uses API key and API secret in the Authorization header. Endpoints cover orders, shipments, carriers, and warehouses. Poll for new orders or use webhooks if available for your plan. Batch operations are supported for bulk label creation. ## Twilio SMS Integration Twilio's REST API requires Account SID and Auth Token. The Messaging API endpoint is /2010-04-01/Accounts/{AccountSid}/Messages.json. For two-way messaging, configure a webhook URL to receive incoming messages. Consider using a queue for high-volume outbound SMS to avoid rate limits. # PentaCodes Technical Reference and Integration Documentation # Version 1.0 | Last Updated March 2025 # This document contains technical reference material for common integrations and deployment procedures. ## QuickBooks Online Integration The QuickBooks Online API uses OAuth 2.0 for authentication. You will need to register your application in the Intuit Developer Portal to obtain client credentials. The base URL for the API is https://quickbooks.api.intuit.com/v3/company/{realmId}. Common endpoints include /invoice, /customer, /payment, and /bill. Rate limits apply: 500 requests per minute for production apps. Always implement exponential backoff for 429 responses. ## Stripe Payment Integration Stripe provides both client-side (Stripe.js) and server-side APIs. For PCI compliance, never pass raw card numbers through your server—use Stripe Elements or the Payment Intents API. Webhooks are essential for handling asynchronous events like payment succeeded or subscription renewed. Configure your webhook endpoint to verify signatures using the Stripe-Signature header. ## ShipStation Integration The ShipStation API is REST-based. Authentication uses API key and API secret in the Authorization header. Endpoints cover orders, shipments, carriers, and warehouses. Poll for new orders or use webhooks if available for your plan. Batch operations are supported for bulk label creation. ## Twilio SMS Integration Twilio's REST API requires Account SID and Auth Token. The Messaging API endpoint is /2010-04-01/Accounts/{AccountSid}/Messages.json. For two-way messaging, configure a webhook URL to receive incoming messages. Consider using a queue for high-volume outbound SMS to avoid rate limits. # PentaCodes Technical Reference and Integration Documentation # Version 1.0 | Last Updated March 2025 # This document contains technical reference material for common integrations and deployment procedures. ## QuickBooks Online Integration The QuickBooks Online API uses OAuth 2.0 for authentication. You will need to register your application in the Intuit Developer Portal to obtain client credentials. The base URL for the API is https://quickbooks.api.intuit.com/v3/company/{realmId}. Common endpoints include /invoice, /customer, /payment, and /bill. Rate limits apply: 500 requests per minute for production apps. Always implement exponential backoff for 429 responses. ## Stripe Payment Integration Stripe provides both client-side (Stripe.js) and server-side APIs. For PCI compliance, never pass raw card numbers through your server—use Stripe Elements or the Payment Intents API. Webhooks are essential for handling asynchronous events like payment succeeded or subscription renewed. Configure your webhook endpoint to verify signatures using the Stripe-Signature header. ## ShipStation Integration The ShipStation API is REST-based. Authentication uses API key and API secret in the Authorization header. Endpoints cover orders, shipments, carriers, and warehouses. Poll for new orders or use webhooks if available for your plan. Batch operations are supported for bulk label creation. ## Twilio SMS Integration Twilio's REST API requires Account SID and Auth Token. The Messaging API endpoint is /2010-04-01/Accounts/{AccountSid}/Messages.json. For two-way messaging, configure a webhook URL to receive incoming messages. Consider using a queue for high-volume outbound SMS to avoid rate limits. # PentaCodes Technical Reference and Integration Documentation # Version 1.0 | Last Updated March 2025 # This document contains technical reference material for common integrations and deployment procedures. ## QuickBooks Online Integration The QuickBooks Online API uses OAuth 2.0 for authentication. You will need to register your application in the Intuit Developer Portal to obtain client credentials. The base URL for the API is https://quickbooks.api.intuit.com/v3/company/{realmId}. Common endpoints include /invoice, /customer, /payment, and /bill. Rate limits apply: 500 requests per minute for production apps. Always implement exponential backoff for 429 responses. ## Stripe Payment Integration Stripe provides both client-side (Stripe.js) and server-side APIs. For PCI compliance, never pass raw card numbers through your server—use Stripe Elements or the Payment Intents API. Webhooks are essential for handling asynchronous events like payment succeeded or subscription renewed. Configure your webhook endpoint to verify signatures using the Stripe-Signature header. ## ShipStation Integration The ShipStation API is REST-based. Authentication uses API key and API secret in the Authorization header. Endpoints cover orders, shipments, carriers, and warehouses. Poll for new orders or use webhooks if available for your plan. Batch operations are supported for bulk label creation. ## Twilio SMS Integration Twilio's REST API requires Account SID and Auth Token. The Messaging API endpoint is /2010-04-01/Accounts/{AccountSid}/Messages.json. For two-way messaging, configure a webhook URL to receive incoming messages. Consider using a queue for high-volume outbound SMS to avoid rate limits. ## HubSpot CRM Integration HubSpot offers a REST API and webhooks for real-time sync. Authentication uses private apps (access token) or OAuth for public apps. The CRM API covers contacts, companies, deals, and tickets. Use the Search API for complex queries. Webhook subscriptions require a valid endpoint that responds to verification challenges. ## Xero Accounting Integration Xero uses OAuth 2.0. The API base is https://api.xero.com/api.xro/2.0/. Endpoints include Invoices, Contacts, Payments, and BankTransactions. Connections are tenant-specific—multi-tenant apps must handle organization switching. Rate limits: 60 calls per minute per organization. ## PostgreSQL Best Practices Use connection pooling (PgBouncer) for web applications. Index foreign keys and frequently queried columns. Avoid N+1 queries—use JOINs or batch loading. For large tables, consider partitioning by date. Always use parameterized queries to prevent SQL injection. ## Redis Caching Patterns Use Redis for session storage, rate limiting, and cache-aside patterns. Set TTLs on cached data to prevent stale reads. Consider Redis Cluster for high availability. Monitor memory usage—Redis holds everything in RAM. ## HubSpot CRM Integration HubSpot offers a REST API and webhooks for real-time sync. Authentication uses private apps (access token) or OAuth for public apps. The CRM API covers contacts, companies, deals, and tickets. Use the Search API for complex queries. Webhook subscriptions require a valid endpoint that responds to verification challenges. ## Xero Accounting Integration Xero uses OAuth 2.0. The API base is https://api.xero.com/api.xro/2.0/. Endpoints include Invoices, Contacts, Payments, and BankTransactions. Connections are tenant-specific—multi-tenant apps must handle organization switching. Rate limits: 60 calls per minute per organization. ## PostgreSQL Best Practices Use connection pooling (PgBouncer) for web applications. Index foreign keys and frequently queried columns. Avoid N+1 queries—use JOINs or batch loading. For large tables, consider partitioning by date. Always use parameterized queries to prevent SQL injection. ## Redis Caching Patterns Use Redis for session storage, rate limiting, and cache-aside patterns. Set TTLs on cached data to prevent stale reads. Consider Redis Cluster for high availability. Monitor memory usage—Redis holds everything in RAM. ## HubSpot CRM Integration HubSpot offers a REST API and webhooks for real-time sync. Authentication uses private apps (access token) or OAuth for public apps. The CRM API covers contacts, companies, deals, and tickets. Use the Search API for complex queries. Webhook subscriptions require a valid endpoint that responds to verification challenges. ## Xero Accounting Integration Xero uses OAuth 2.0. The API base is https://api.xero.com/api.xro/2.0/. Endpoints include Invoices, Contacts, Payments, and BankTransactions. Connections are tenant-specific—multi-tenant apps must handle organization switching. Rate limits: 60 calls per minute per organization. ## PostgreSQL Best Practices Use connection pooling (PgBouncer) for web applications. Index foreign keys and frequently queried columns. Avoid N+1 queries—use JOINs or batch loading. For large tables, consider partitioning by date. Always use parameterized queries to prevent SQL injection. ## Redis Caching Patterns Use Redis for session storage, rate limiting, and cache-aside patterns. Set TTLs on cached data to prevent stale reads. Consider Redis Cluster for high availability. Monitor memory usage—Redis holds everything in RAM. ## HubSpot CRM Integration HubSpot offers a REST API and webhooks for real-time sync. Authentication uses private apps (access token) or OAuth for public apps. The CRM API covers contacts, companies, deals, and tickets. Use the Search API for complex queries. Webhook subscriptions require a valid endpoint that responds to verification challenges. ## Xero Accounting Integration Xero uses OAuth 2.0. The API base is https://api.xero.com/api.xro/2.0/. Endpoints include Invoices, Contacts, Payments, and BankTransactions. Connections are tenant-specific—multi-tenant apps must handle organization switching. Rate limits: 60 calls per minute per organization. ## PostgreSQL Best Practices Use connection pooling (PgBouncer) for web applications. Index foreign keys and frequently queried columns. Avoid N+1 queries—use JOINs or batch loading. For large tables, consider partitioning by date. Always use parameterized queries to prevent SQL injection. ## Redis Caching Patterns Use Redis for session storage, rate limiting, and cache-aside patterns. Set TTLs on cached data to prevent stale reads. Consider Redis Cluster for high availability. Monitor memory usage—Redis holds everything in RAM. ## HubSpot CRM Integration HubSpot offers a REST API and webhooks for real-time sync. Authentication uses private apps (access token) or OAuth for public apps. The CRM API covers contacts, companies, deals, and tickets. Use the Search API for complex queries. Webhook subscriptions require a valid endpoint that responds to verification challenges. ## Xero Accounting Integration Xero uses OAuth 2.0. The API base is https://api.xero.com/api.xro/2.0/. Endpoints include Invoices, Contacts, Payments, and BankTransactions. Connections are tenant-specific—multi-tenant apps must handle organization switching. Rate limits: 60 calls per minute per organization. ## PostgreSQL Best Practices Use connection pooling (PgBouncer) for web applications. Index foreign keys and frequently queried columns. Avoid N+1 queries—use JOINs or batch loading. For large tables, consider partitioning by date. Always use parameterized queries to prevent SQL injection. ## Redis Caching Patterns Use Redis for session storage, rate limiting, and cache-aside patterns. Set TTLs on cached data to prevent stale reads. Consider Redis Cluster for high availability. Monitor memory usage—Redis holds everything in RAM. ## HubSpot CRM Integration HubSpot offers a REST API and webhooks for real-time sync. Authentication uses private apps (access token) or OAuth for public apps. The CRM API covers contacts, companies, deals, and tickets. Use the Search API for complex queries. Webhook subscriptions require a valid endpoint that responds to verification challenges. ## Xero Accounting Integration Xero uses OAuth 2.0. The API base is https://api.xero.com/api.xro/2.0/. Endpoints include Invoices, Contacts, Payments, and BankTransactions. Connections are tenant-specific—multi-tenant apps must handle organization switching. Rate limits: 60 calls per minute per organization. ## PostgreSQL Best Practices Use connection pooling (PgBouncer) for web applications. Index foreign keys and frequently queried columns. Avoid N+1 queries—use JOINs or batch loading. For large tables, consider partitioning by date. Always use parameterized queries to prevent SQL injection. ## Redis Caching Patterns Use Redis for session storage, rate limiting, and cache-aside patterns. Set TTLs on cached data to prevent stale reads. Consider Redis Cluster for high availability. Monitor memory usage—Redis holds everything in RAM. ## HubSpot CRM Integration HubSpot offers a REST API and webhooks for real-time sync. Authentication uses private apps (access token) or OAuth for public apps. The CRM API covers contacts, companies, deals, and tickets. Use the Search API for complex queries. Webhook subscriptions require a valid endpoint that responds to verification challenges. ## Xero Accounting Integration Xero uses OAuth 2.0. The API base is https://api.xero.com/api.xro/2.0/. Endpoints include Invoices, Contacts, Payments, and BankTransactions. Connections are tenant-specific—multi-tenant apps must handle organization switching. Rate limits: 60 calls per minute per organization. ## PostgreSQL Best Practices Use connection pooling (PgBouncer) for web applications. Index foreign keys and frequently queried columns. Avoid N+1 queries—use JOINs or batch loading. For large tables, consider partitioning by date. Always use parameterized queries to prevent SQL injection. ## Redis Caching Patterns Use Redis for session storage, rate limiting, and cache-aside patterns. Set TTLs on cached data to prevent stale reads. Consider Redis Cluster for high availability. Monitor memory usage—Redis holds everything in RAM. ## HubSpot CRM Integration HubSpot offers a REST API and webhooks for real-time sync. Authentication uses private apps (access token) or OAuth for public apps. The CRM API covers contacts, companies, deals, and tickets. Use the Search API for complex queries. Webhook subscriptions require a valid endpoint that responds to verification challenges. ## Xero Accounting Integration Xero uses OAuth 2.0. The API base is https://api.xero.com/api.xro/2.0/. Endpoints include Invoices, Contacts, Payments, and BankTransactions. Connections are tenant-specific—multi-tenant apps must handle organization switching. Rate limits: 60 calls per minute per organization. ## PostgreSQL Best Practices Use connection pooling (PgBouncer) for web applications. Index foreign keys and frequently queried columns. Avoid N+1 queries—use JOINs or batch loading. For large tables, consider partitioning by date. Always use parameterized queries to prevent SQL injection. ## Redis Caching Patterns Use Redis for session storage, rate limiting, and cache-aside patterns. Set TTLs on cached data to prevent stale reads. Consider Redis Cluster for high availability. Monitor memory usage—Redis holds everything in RAM. ## HubSpot CRM Integration HubSpot offers a REST API and webhooks for real-time sync. Authentication uses private apps (access token) or OAuth for public apps. The CRM API covers contacts, companies, deals, and tickets. Use the Search API for complex queries. Webhook subscriptions require a valid endpoint that responds to verification challenges. ## Xero Accounting Integration Xero uses OAuth 2.0. The API base is https://api.xero.com/api.xro/2.0/. Endpoints include Invoices, Contacts, Payments, and BankTransactions. Connections are tenant-specific—multi-tenant apps must handle organization switching. Rate limits: 60 calls per minute per organization. ## PostgreSQL Best Practices Use connection pooling (PgBouncer) for web applications. Index foreign keys and frequently queried columns. Avoid N+1 queries—use JOINs or batch loading. For large tables, consider partitioning by date. Always use parameterized queries to prevent SQL injection. ## Redis Caching Patterns Use Redis for session storage, rate limiting, and cache-aside patterns. Set TTLs on cached data to prevent stale reads. Consider Redis Cluster for high availability. Monitor memory usage—Redis holds everything in RAM. ## HubSpot CRM Integration HubSpot offers a REST API and webhooks for real-time sync. Authentication uses private apps (access token) or OAuth for public apps. The CRM API covers contacts, companies, deals, and tickets. Use the Search API for complex queries. Webhook subscriptions require a valid endpoint that responds to verification challenges. ## Xero Accounting Integration Xero uses OAuth 2.0. The API base is https://api.xero.com/api.xro/2.0/. Endpoints include Invoices, Contacts, Payments, and BankTransactions. Connections are tenant-specific—multi-tenant apps must handle organization switching. Rate limits: 60 calls per minute per organization. ## PostgreSQL Best Practices Use connection pooling (PgBouncer) for web applications. Index foreign keys and frequently queried columns. Avoid N+1 queries—use JOINs or batch loading. For large tables, consider partitioning by date. Always use parameterized queries to prevent SQL injection. ## Redis Caching Patterns Use Redis for session storage, rate limiting, and cache-aside patterns. Set TTLs on cached data to prevent stale reads. Consider Redis Cluster for high availability. Monitor memory usage—Redis holds everything in RAM. ## HubSpot CRM Integration HubSpot offers a REST API and webhooks for real-time sync. Authentication uses private apps (access token) or OAuth for public apps. The CRM API covers contacts, companies, deals, and tickets. Use the Search API for complex queries. Webhook subscriptions require a valid endpoint that responds to verification challenges. ## Xero Accounting Integration Xero uses OAuth 2.0. The API base is https://api.xero.com/api.xro/2.0/. Endpoints include Invoices, Contacts, Payments, and BankTransactions. Connections are tenant-specific—multi-tenant apps must handle organization switching. Rate limits: 60 calls per minute per organization. ## PostgreSQL Best Practices Use connection pooling (PgBouncer) for web applications. Index foreign keys and frequently queried columns. Avoid N+1 queries—use JOINs or batch loading. For large tables, consider partitioning by date. Always use parameterized queries to prevent SQL injection. ## Redis Caching Patterns Use Redis for session storage, rate limiting, and cache-aside patterns. Set TTLs on cached data to prevent stale reads. Consider Redis Cluster for high availability. Monitor memory usage—Redis holds everything in RAM. ## HubSpot CRM Integration HubSpot offers a REST API and webhooks for real-time sync. Authentication uses private apps (access token) or OAuth for public apps. The CRM API covers contacts, companies, deals, and tickets. Use the Search API for complex queries. Webhook subscriptions require a valid endpoint that responds to verification challenges. ## Xero Accounting Integration Xero uses OAuth 2.0. The API base is https://api.xero.com/api.xro/2.0/. Endpoints include Invoices, Contacts, Payments, and BankTransactions. Connections are tenant-specific—multi-tenant apps must handle organization switching. Rate limits: 60 calls per minute per organization. ## PostgreSQL Best Practices Use connection pooling (PgBouncer) for web applications. Index foreign keys and frequently queried columns. Avoid N+1 queries—use JOINs or batch loading. For large tables, consider partitioning by date. Always use parameterized queries to prevent SQL injection. ## Redis Caching Patterns Use Redis for session storage, rate limiting, and cache-aside patterns. Set TTLs on cached data to prevent stale reads. Consider Redis Cluster for high availability. Monitor memory usage—Redis holds everything in RAM. ## HubSpot CRM Integration HubSpot offers a REST API and webhooks for real-time sync. Authentication uses private apps (access token) or OAuth for public apps. The CRM API covers contacts, companies, deals, and tickets. Use the Search API for complex queries. Webhook subscriptions require a valid endpoint that responds to verification challenges. ## Xero Accounting Integration Xero uses OAuth 2.0. The API base is https://api.xero.com/api.xro/2.0/. Endpoints include Invoices, Contacts, Payments, and BankTransactions. Connections are tenant-specific—multi-tenant apps must handle organization switching. Rate limits: 60 calls per minute per organization. ## PostgreSQL Best Practices Use connection pooling (PgBouncer) for web applications. Index foreign keys and frequently queried columns. Avoid N+1 queries—use JOINs or batch loading. For large tables, consider partitioning by date. Always use parameterized queries to prevent SQL injection. ## Redis Caching Patterns Use Redis for session storage, rate limiting, and cache-aside patterns. Set TTLs on cached data to prevent stale reads. Consider Redis Cluster for high availability. Monitor memory usage—Redis holds everything in RAM. ## HubSpot CRM Integration HubSpot offers a REST API and webhooks for real-time sync. Authentication uses private apps (access token) or OAuth for public apps. The CRM API covers contacts, companies, deals, and tickets. Use the Search API for complex queries. Webhook subscriptions require a valid endpoint that responds to verification challenges. ## Xero Accounting Integration Xero uses OAuth 2.0. The API base is https://api.xero.com/api.xro/2.0/. Endpoints include Invoices, Contacts, Payments, and BankTransactions. Connections are tenant-specific—multi-tenant apps must handle organization switching. Rate limits: 60 calls per minute per organization. ## PostgreSQL Best Practices Use connection pooling (PgBouncer) for web applications. Index foreign keys and frequently queried columns. Avoid N+1 queries—use JOINs or batch loading. For large tables, consider partitioning by date. Always use parameterized queries to prevent SQL injection. ## Redis Caching Patterns Use Redis for session storage, rate limiting, and cache-aside patterns. Set TTLs on cached data to prevent stale reads. Consider Redis Cluster for high availability. Monitor memory usage—Redis holds everything in RAM. ## HubSpot CRM Integration HubSpot offers a REST API and webhooks for real-time sync. Authentication uses private apps (access token) or OAuth for public apps. The CRM API covers contacts, companies, deals, and tickets. Use the Search API for complex queries. Webhook subscriptions require a valid endpoint that responds to verification challenges. ## Xero Accounting Integration Xero uses OAuth 2.0. The API base is https://api.xero.com/api.xro/2.0/. Endpoints include Invoices, Contacts, Payments, and BankTransactions. Connections are tenant-specific—multi-tenant apps must handle organization switching. Rate limits: 60 calls per minute per organization. ## PostgreSQL Best Practices Use connection pooling (PgBouncer) for web applications. Index foreign keys and frequently queried columns. Avoid N+1 queries—use JOINs or batch loading. For large tables, consider partitioning by date. Always use parameterized queries to prevent SQL injection. ## Redis Caching Patterns Use Redis for session storage, rate limiting, and cache-aside patterns. Set TTLs on cached data to prevent stale reads. Consider Redis Cluster for high availability. Monitor memory usage—Redis holds everything in RAM. ## HubSpot CRM Integration HubSpot offers a REST API and webhooks for real-time sync. Authentication uses private apps (access token) or OAuth for public apps. The CRM API covers contacts, companies, deals, and tickets. Use the Search API for complex queries. Webhook subscriptions require a valid endpoint that responds to verification challenges. ## Xero Accounting Integration Xero uses OAuth 2.0. The API base is https://api.xero.com/api.xro/2.0/. Endpoints include Invoices, Contacts, Payments, and BankTransactions. Connections are tenant-specific—multi-tenant apps must handle organization switching. Rate limits: 60 calls per minute per organization. ## PostgreSQL Best Practices Use connection pooling (PgBouncer) for web applications. Index foreign keys and frequently queried columns. Avoid N+1 queries—use JOINs or batch loading. For large tables, consider partitioning by date. Always use parameterized queries to prevent SQL injection. ## Redis Caching Patterns Use Redis for session storage, rate limiting, and cache-aside patterns. Set TTLs on cached data to prevent stale reads. Consider Redis Cluster for high availability. Monitor memory usage—Redis holds everything in RAM. ## HubSpot CRM Integration HubSpot offers a REST API and webhooks for real-time sync. Authentication uses private apps (access token) or OAuth for public apps. The CRM API covers contacts, companies, deals, and tickets. Use the Search API for complex queries. Webhook subscriptions require a valid endpoint that responds to verification challenges. ## Xero Accounting Integration Xero uses OAuth 2.0. The API base is https://api.xero.com/api.xro/2.0/. Endpoints include Invoices, Contacts, Payments, and BankTransactions. Connections are tenant-specific—multi-tenant apps must handle organization switching. Rate limits: 60 calls per minute per organization. ## PostgreSQL Best Practices Use connection pooling (PgBouncer) for web applications. Index foreign keys and frequently queried columns. Avoid N+1 queries—use JOINs or batch loading. For large tables, consider partitioning by date. Always use parameterized queries to prevent SQL injection. ## Redis Caching Patterns Use Redis for session storage, rate limiting, and cache-aside patterns. Set TTLs on cached data to prevent stale reads. Consider Redis Cluster for high availability. Monitor memory usage—Redis holds everything in RAM. ## HubSpot CRM Integration HubSpot offers a REST API and webhooks for real-time sync. Authentication uses private apps (access token) or OAuth for public apps. The CRM API covers contacts, companies, deals, and tickets. Use the Search API for complex queries. Webhook subscriptions require a valid endpoint that responds to verification challenges. ## Xero Accounting Integration Xero uses OAuth 2.0. The API base is https://api.xero.com/api.xro/2.0/. Endpoints include Invoices, Contacts, Payments, and BankTransactions. Connections are tenant-specific—multi-tenant apps must handle organization switching. Rate limits: 60 calls per minute per organization. ## PostgreSQL Best Practices Use connection pooling (PgBouncer) for web applications. Index foreign keys and frequently queried columns. Avoid N+1 queries—use JOINs or batch loading. For large tables, consider partitioning by date. Always use parameterized queries to prevent SQL injection. ## Redis Caching Patterns Use Redis for session storage, rate limiting, and cache-aside patterns. Set TTLs on cached data to prevent stale reads. Consider Redis Cluster for high availability. Monitor memory usage—Redis holds everything in RAM. ## HubSpot CRM Integration HubSpot offers a REST API and webhooks for real-time sync. Authentication uses private apps (access token) or OAuth for public apps. The CRM API covers contacts, companies, deals, and tickets. Use the Search API for complex queries. Webhook subscriptions require a valid endpoint that responds to verification challenges. ## Xero Accounting Integration Xero uses OAuth 2.0. The API base is https://api.xero.com/api.xro/2.0/. Endpoints include Invoices, Contacts, Payments, and BankTransactions. Connections are tenant-specific—multi-tenant apps must handle organization switching. Rate limits: 60 calls per minute per organization. ## PostgreSQL Best Practices Use connection pooling (PgBouncer) for web applications. Index foreign keys and frequently queried columns. Avoid N+1 queries—use JOINs or batch loading. For large tables, consider partitioning by date. Always use parameterized queries to prevent SQL injection. ## Redis Caching Patterns Use Redis for session storage, rate limiting, and cache-aside patterns. Set TTLs on cached data to prevent stale reads. Consider Redis Cluster for high availability. Monitor memory usage—Redis holds everything in RAM. ## HubSpot CRM Integration HubSpot offers a REST API and webhooks for real-time sync. Authentication uses private apps (access token) or OAuth for public apps. The CRM API covers contacts, companies, deals, and tickets. Use the Search API for complex queries. Webhook subscriptions require a valid endpoint that responds to verification challenges. ## Xero Accounting Integration Xero uses OAuth 2.0. The API base is https://api.xero.com/api.xro/2.0/. Endpoints include Invoices, Contacts, Payments, and BankTransactions. Connections are tenant-specific—multi-tenant apps must handle organization switching. Rate limits: 60 calls per minute per organization. ## PostgreSQL Best Practices Use connection pooling (PgBouncer) for web applications. Index foreign keys and frequently queried columns. Avoid N+1 queries—use JOINs or batch loading. For large tables, consider partitioning by date. Always use parameterized queries to prevent SQL injection. ## Redis Caching Patterns Use Redis for session storage, rate limiting, and cache-aside patterns. Set TTLs on cached data to prevent stale reads. Consider Redis Cluster for high availability. Monitor memory usage—Redis holds everything in RAM. ## HubSpot CRM Integration HubSpot offers a REST API and webhooks for real-time sync. Authentication uses private apps (access token) or OAuth for public apps. The CRM API covers contacts, companies, deals, and tickets. Use the Search API for complex queries. Webhook subscriptions require a valid endpoint that responds to verification challenges. ## Xero Accounting Integration Xero uses OAuth 2.0. The API base is https://api.xero.com/api.xro/2.0/. Endpoints include Invoices, Contacts, Payments, and BankTransactions. Connections are tenant-specific—multi-tenant apps must handle organization switching. Rate limits: 60 calls per minute per organization. ## PostgreSQL Best Practices Use connection pooling (PgBouncer) for web applications. Index foreign keys and frequently queried columns. Avoid N+1 queries—use JOINs or batch loading. For large tables, consider partitioning by date. Always use parameterized queries to prevent SQL injection. ## Redis Caching Patterns Use Redis for session storage, rate limiting, and cache-aside patterns. Set TTLs on cached data to prevent stale reads. Consider Redis Cluster for high availability. Monitor memory usage—Redis holds everything in RAM. ## HubSpot CRM Integration HubSpot offers a REST API and webhooks for real-time sync. Authentication uses private apps (access token) or OAuth for public apps. The CRM API covers contacts, companies, deals, and tickets. Use the Search API for complex queries. Webhook subscriptions require a valid endpoint that responds to verification challenges. ## Xero Accounting Integration Xero uses OAuth 2.0. The API base is https://api.xero.com/api.xro/2.0/. Endpoints include Invoices, Contacts, Payments, and BankTransactions. Connections are tenant-specific—multi-tenant apps must handle organization switching. Rate limits: 60 calls per minute per organization. ## PostgreSQL Best Practices Use connection pooling (PgBouncer) for web applications. Index foreign keys and frequently queried columns. Avoid N+1 queries—use JOINs or batch loading. For large tables, consider partitioning by date. Always use parameterized queries to prevent SQL injection. ## Redis Caching Patterns Use Redis for session storage, rate limiting, and cache-aside patterns. Set TTLs on cached data to prevent stale reads. Consider Redis Cluster for high availability. Monitor memory usage—Redis holds everything in RAM. ## HubSpot CRM Integration HubSpot offers a REST API and webhooks for real-time sync. Authentication uses private apps (access token) or OAuth for public apps. The CRM API covers contacts, companies, deals, and tickets. Use the Search API for complex queries. Webhook subscriptions require a valid endpoint that responds to verification challenges. ## Xero Accounting Integration Xero uses OAuth 2.0. The API base is https://api.xero.com/api.xro/2.0/. Endpoints include Invoices, Contacts, Payments, and BankTransactions. Connections are tenant-specific—multi-tenant apps must handle organization switching. Rate limits: 60 calls per minute per organization. ## PostgreSQL Best Practices Use connection pooling (PgBouncer) for web applications. Index foreign keys and frequently queried columns. Avoid N+1 queries—use JOINs or batch loading. For large tables, consider partitioning by date. Always use parameterized queries to prevent SQL injection. ## Redis Caching Patterns Use Redis for session storage, rate limiting, and cache-aside patterns. Set TTLs on cached data to prevent stale reads. Consider Redis Cluster for high availability. Monitor memory usage—Redis holds everything in RAM. ## HubSpot CRM Integration HubSpot offers a REST API and webhooks for real-time sync. Authentication uses private apps (access token) or OAuth for public apps. The CRM API covers contacts, companies, deals, and tickets. Use the Search API for complex queries. Webhook subscriptions require a valid endpoint that responds to verification challenges. ## Xero Accounting Integration Xero uses OAuth 2.0. The API base is https://api.xero.com/api.xro/2.0/. Endpoints include Invoices, Contacts, Payments, and BankTransactions. Connections are tenant-specific—multi-tenant apps must handle organization switching. Rate limits: 60 calls per minute per organization. ## PostgreSQL Best Practices Use connection pooling (PgBouncer) for web applications. Index foreign keys and frequently queried columns. Avoid N+1 queries—use JOINs or batch loading. For large tables, consider partitioning by date. Always use parameterized queries to prevent SQL injection. ## Redis Caching Patterns Use Redis for session storage, rate limiting, and cache-aside patterns. Set TTLs on cached data to prevent stale reads. Consider Redis Cluster for high availability. Monitor memory usage—Redis holds everything in RAM. ## HubSpot CRM Integration HubSpot offers a REST API and webhooks for real-time sync. Authentication uses private apps (access token) or OAuth for public apps. The CRM API covers contacts, companies, deals, and tickets. Use the Search API for complex queries. Webhook subscriptions require a valid endpoint that responds to verification challenges. ## Xero Accounting Integration Xero uses OAuth 2.0. The API base is https://api.xero.com/api.xro/2.0/. Endpoints include Invoices, Contacts, Payments, and BankTransactions. Connections are tenant-specific—multi-tenant apps must handle organization switching. Rate limits: 60 calls per minute per organization. ## PostgreSQL Best Practices Use connection pooling (PgBouncer) for web applications. Index foreign keys and frequently queried columns. Avoid N+1 queries—use JOINs or batch loading. For large tables, consider partitioning by date. Always use parameterized queries to prevent SQL injection. ## Redis Caching Patterns Use Redis for session storage, rate limiting, and cache-aside patterns. Set TTLs on cached data to prevent stale reads. Consider Redis Cluster for high availability. Monitor memory usage—Redis holds everything in RAM. ## HubSpot CRM Integration HubSpot offers a REST API and webhooks for real-time sync. Authentication uses private apps (access token) or OAuth for public apps. The CRM API covers contacts, companies, deals, and tickets. Use the Search API for complex queries. Webhook subscriptions require a valid endpoint that responds to verification challenges. ## Xero Accounting Integration Xero uses OAuth 2.0. The API base is https://api.xero.com/api.xro/2.0/. Endpoints include Invoices, Contacts, Payments, and BankTransactions. Connections are tenant-specific—multi-tenant apps must handle organization switching. Rate limits: 60 calls per minute per organization. ## PostgreSQL Best Practices Use connection pooling (PgBouncer) for web applications. Index foreign keys and frequently queried columns. Avoid N+1 queries—use JOINs or batch loading. For large tables, consider partitioning by date. Always use parameterized queries to prevent SQL injection. ## Redis Caching Patterns Use Redis for session storage, rate limiting, and cache-aside patterns. Set TTLs on cached data to prevent stale reads. Consider Redis Cluster for high availability. Monitor memory usage—Redis holds everything in RAM. ## HubSpot CRM Integration HubSpot offers a REST API and webhooks for real-time sync. Authentication uses private apps (access token) or OAuth for public apps. The CRM API covers contacts, companies, deals, and tickets. Use the Search API for complex queries. Webhook subscriptions require a valid endpoint that responds to verification challenges. ## Xero Accounting Integration Xero uses OAuth 2.0. The API base is https://api.xero.com/api.xro/2.0/. Endpoints include Invoices, Contacts, Payments, and BankTransactions. Connections are tenant-specific—multi-tenant apps must handle organization switching. Rate limits: 60 calls per minute per organization. ## PostgreSQL Best Practices Use connection pooling (PgBouncer) for web applications. Index foreign keys and frequently queried columns. Avoid N+1 queries—use JOINs or batch loading. For large tables, consider partitioning by date. Always use parameterized queries to prevent SQL injection. ## Redis Caching Patterns Use Redis for session storage, rate limiting, and cache-aside patterns. Set TTLs on cached data to prevent stale reads. Consider Redis Cluster for high availability. Monitor memory usage—Redis holds everything in RAM. ## HubSpot CRM Integration HubSpot offers a REST API and webhooks for real-time sync. Authentication uses private apps (access token) or OAuth for public apps. The CRM API covers contacts, companies, deals, and tickets. Use the Search API for complex queries. Webhook subscriptions require a valid endpoint that responds to verification challenges. ## Xero Accounting Integration Xero uses OAuth 2.0. The API base is https://api.xero.com/api.xro/2.0/. Endpoints include Invoices, Contacts, Payments, and BankTransactions. Connections are tenant-specific—multi-tenant apps must handle organization switching. Rate limits: 60 calls per minute per organization. ## PostgreSQL Best Practices Use connection pooling (PgBouncer) for web applications. Index foreign keys and frequently queried columns. Avoid N+1 queries—use JOINs or batch loading. For large tables, consider partitioning by date. Always use parameterized queries to prevent SQL injection. ## Redis Caching Patterns Use Redis for session storage, rate limiting, and cache-aside patterns. Set TTLs on cached data to prevent stale reads. Consider Redis Cluster for high availability. Monitor memory usage—Redis holds everything in RAM. ## HubSpot CRM Integration HubSpot offers a REST API and webhooks for real-time sync. Authentication uses private apps (access token) or OAuth for public apps. The CRM API covers contacts, companies, deals, and tickets. Use the Search API for complex queries. Webhook subscriptions require a valid endpoint that responds to verification challenges. ## Xero Accounting Integration Xero uses OAuth 2.0. The API base is https://api.xero.com/api.xro/2.0/. Endpoints include Invoices, Contacts, Payments, and BankTransactions. Connections are tenant-specific—multi-tenant apps must handle organization switching. Rate limits: 60 calls per minute per organization. ## PostgreSQL Best Practices Use connection pooling (PgBouncer) for web applications. Index foreign keys and frequently queried columns. Avoid N+1 queries—use JOINs or batch loading. For large tables, consider partitioning by date. Always use parameterized queries to prevent SQL injection. ## Redis Caching Patterns Use Redis for session storage, rate limiting, and cache-aside patterns. Set TTLs on cached data to prevent stale reads. Consider Redis Cluster for high availability. Monitor memory usage—Redis holds everything in RAM. ## HubSpot CRM Integration HubSpot offers a REST API and webhooks for real-time sync. Authentication uses private apps (access token) or OAuth for public apps. The CRM API covers contacts, companies, deals, and tickets. Use the Search API for complex queries. Webhook subscriptions require a valid endpoint that responds to verification challenges. ## Xero Accounting Integration Xero uses OAuth 2.0. The API base is https://api.xero.com/api.xro/2.0/. Endpoints include Invoices, Contacts, Payments, and BankTransactions. Connections are tenant-specific—multi-tenant apps must handle organization switching. Rate limits: 60 calls per minute per organization. ## PostgreSQL Best Practices Use connection pooling (PgBouncer) for web applications. Index foreign keys and frequently queried columns. Avoid N+1 queries—use JOINs or batch loading. For large tables, consider partitioning by date. Always use parameterized queries to prevent SQL injection. ## Redis Caching Patterns Use Redis for session storage, rate limiting, and cache-aside patterns. Set TTLs on cached data to prevent stale reads. Consider Redis Cluster for high availability. Monitor memory usage—Redis holds everything in RAM. ## HubSpot CRM Integration HubSpot offers a REST API and webhooks for real-time sync. Authentication uses private apps (access token) or OAuth for public apps. The CRM API covers contacts, companies, deals, and tickets. Use the Search API for complex queries. Webhook subscriptions require a valid endpoint that responds to verification challenges. ## Xero Accounting Integration Xero uses OAuth 2.0. The API base is https://api.xero.com/api.xro/2.0/. Endpoints include Invoices, Contacts, Payments, and BankTransactions. Connections are tenant-specific—multi-tenant apps must handle organization switching. Rate limits: 60 calls per minute per organization. ## PostgreSQL Best Practices Use connection pooling (PgBouncer) for web applications. Index foreign keys and frequently queried columns. Avoid N+1 queries—use JOINs or batch loading. For large tables, consider partitioning by date. Always use parameterized queries to prevent SQL injection. ## Redis Caching Patterns Use Redis for session storage, rate limiting, and cache-aside patterns. Set TTLs on cached data to prevent stale reads. Consider Redis Cluster for high availability. Monitor memory usage—Redis holds everything in RAM. ## HubSpot CRM Integration HubSpot offers a REST API and webhooks for real-time sync. Authentication uses private apps (access token) or OAuth for public apps. The CRM API covers contacts, companies, deals, and tickets. Use the Search API for complex queries. Webhook subscriptions require a valid endpoint that responds to verification challenges. ## Xero Accounting Integration Xero uses OAuth 2.0. The API base is https://api.xero.com/api.xro/2.0/. Endpoints include Invoices, Contacts, Payments, and BankTransactions. Connections are tenant-specific—multi-tenant apps must handle organization switching. Rate limits: 60 calls per minute per organization. ## PostgreSQL Best Practices Use connection pooling (PgBouncer) for web applications. Index foreign keys and frequently queried columns. Avoid N+1 queries—use JOINs or batch loading. For large tables, consider partitioning by date. Always use parameterized queries to prevent SQL injection. ## Redis Caching Patterns Use Redis for session storage, rate limiting, and cache-aside patterns. Set TTLs on cached data to prevent stale reads. Consider Redis Cluster for high availability. Monitor memory usage—Redis holds everything in RAM. ## HubSpot CRM Integration HubSpot offers a REST API and webhooks for real-time sync. Authentication uses private apps (access token) or OAuth for public apps. The CRM API covers contacts, companies, deals, and tickets. Use the Search API for complex queries. Webhook subscriptions require a valid endpoint that responds to verification challenges. ## Xero Accounting Integration Xero uses OAuth 2.0. The API base is https://api.xero.com/api.xro/2.0/. Endpoints include Invoices, Contacts, Payments, and BankTransactions. Connections are tenant-specific—multi-tenant apps must handle organization switching. Rate limits: 60 calls per minute per organization. ## PostgreSQL Best Practices Use connection pooling (PgBouncer) for web applications. Index foreign keys and frequently queried columns. Avoid N+1 queries—use JOINs or batch loading. For large tables, consider partitioning by date. Always use parameterized queries to prevent SQL injection. ## Redis Caching Patterns Use Redis for session storage, rate limiting, and cache-aside patterns. Set TTLs on cached data to prevent stale reads. Consider Redis Cluster for high availability. Monitor memory usage—Redis holds everything in RAM. ## HubSpot CRM Integration HubSpot offers a REST API and webhooks for real-time sync. Authentication uses private apps (access token) or OAuth for public apps. The CRM API covers contacts, companies, deals, and tickets. Use the Search API for complex queries. Webhook subscriptions require a valid endpoint that responds to verification challenges. ## Xero Accounting Integration Xero uses OAuth 2.0. The API base is https://api.xero.com/api.xro/2.0/. Endpoints include Invoices, Contacts, Payments, and BankTransactions. Connections are tenant-specific—multi-tenant apps must handle organization switching. Rate limits: 60 calls per minute per organization. ## PostgreSQL Best Practices Use connection pooling (PgBouncer) for web applications. Index foreign keys and frequently queried columns. Avoid N+1 queries—use JOINs or batch loading. For large tables, consider partitioning by date. Always use parameterized queries to prevent SQL injection. ## Redis Caching Patterns Use Redis for session storage, rate limiting, and cache-aside patterns. Set TTLs on cached data to prevent stale reads. Consider Redis Cluster for high availability. Monitor memory usage—Redis holds everything in RAM. ## HubSpot CRM Integration HubSpot offers a REST API and webhooks for real-time sync. Authentication uses private apps (access token) or OAuth for public apps. The CRM API covers contacts, companies, deals, and tickets. Use the Search API for complex queries. Webhook subscriptions require a valid endpoint that responds to verification challenges. ## Xero Accounting Integration Xero uses OAuth 2.0. The API base is https://api.xero.com/api.xro/2.0/. Endpoints include Invoices, Contacts, Payments, and BankTransactions. Connections are tenant-specific—multi-tenant apps must handle organization switching. Rate limits: 60 calls per minute per organization. ## PostgreSQL Best Practices Use connection pooling (PgBouncer) for web applications. Index foreign keys and frequently queried columns. Avoid N+1 queries—use JOINs or batch loading. For large tables, consider partitioning by date. Always use parameterized queries to prevent SQL injection. ## Redis Caching Patterns Use Redis for session storage, rate limiting, and cache-aside patterns. Set TTLs on cached data to prevent stale reads. Consider Redis Cluster for high availability. Monitor memory usage—Redis holds everything in RAM. ## HubSpot CRM Integration HubSpot offers a REST API and webhooks for real-time sync. Authentication uses private apps (access token) or OAuth for public apps. The CRM API covers contacts, companies, deals, and tickets. Use the Search API for complex queries. Webhook subscriptions require a valid endpoint that responds to verification challenges. ## Xero Accounting Integration Xero uses OAuth 2.0. The API base is https://api.xero.com/api.xro/2.0/. Endpoints include Invoices, Contacts, Payments, and BankTransactions. Connections are tenant-specific—multi-tenant apps must handle organization switching. Rate limits: 60 calls per minute per organization. ## PostgreSQL Best Practices Use connection pooling (PgBouncer) for web applications. Index foreign keys and frequently queried columns. Avoid N+1 queries—use JOINs or batch loading. For large tables, consider partitioning by date. Always use parameterized queries to prevent SQL injection. ## Redis Caching Patterns Use Redis for session storage, rate limiting, and cache-aside patterns. Set TTLs on cached data to prevent stale reads. Consider Redis Cluster for high availability. Monitor memory usage—Redis holds everything in RAM. ## HubSpot CRM Integration HubSpot offers a REST API and webhooks for real-time sync. Authentication uses private apps (access token) or OAuth for public apps. The CRM API covers contacts, companies, deals, and tickets. Use the Search API for complex queries. Webhook subscriptions require a valid endpoint that responds to verification challenges. ## Xero Accounting Integration Xero uses OAuth 2.0. The API base is https://api.xero.com/api.xro/2.0/. Endpoints include Invoices, Contacts, Payments, and BankTransactions. Connections are tenant-specific—multi-tenant apps must handle organization switching. Rate limits: 60 calls per minute per organization. ## PostgreSQL Best Practices Use connection pooling (PgBouncer) for web applications. Index foreign keys and frequently queried columns. Avoid N+1 queries—use JOINs or batch loading. For large tables, consider partitioning by date. Always use parameterized queries to prevent SQL injection. ## Redis Caching Patterns Use Redis for session storage, rate limiting, and cache-aside patterns. Set TTLs on cached data to prevent stale reads. Consider Redis Cluster for high availability. Monitor memory usage—Redis holds everything in RAM. ## HubSpot CRM Integration HubSpot offers a REST API and webhooks for real-time sync. Authentication uses private apps (access token) or OAuth for public apps. The CRM API covers contacts, companies, deals, and tickets. Use the Search API for complex queries. Webhook subscriptions require a valid endpoint that responds to verification challenges. ## Xero Accounting Integration Xero uses OAuth 2.0. The API base is https://api.xero.com/api.xro/2.0/. Endpoints include Invoices, Contacts, Payments, and BankTransactions. Connections are tenant-specific—multi-tenant apps must handle organization switching. Rate limits: 60 calls per minute per organization. ## PostgreSQL Best Practices Use connection pooling (PgBouncer) for web applications. Index foreign keys and frequently queried columns. Avoid N+1 queries—use JOINs or batch loading. For large tables, consider partitioning by date. Always use parameterized queries to prevent SQL injection. ## Redis Caching Patterns Use Redis for session storage, rate limiting, and cache-aside patterns. Set TTLs on cached data to prevent stale reads. Consider Redis Cluster for high availability. Monitor memory usage—Redis holds everything in RAM. ## HubSpot CRM Integration HubSpot offers a REST API and webhooks for real-time sync. Authentication uses private apps (access token) or OAuth for public apps. The CRM API covers contacts, companies, deals, and tickets. Use the Search API for complex queries. Webhook subscriptions require a valid endpoint that responds to verification challenges. ## Xero Accounting Integration Xero uses OAuth 2.0. The API base is https://api.xero.com/api.xro/2.0/. Endpoints include Invoices, Contacts, Payments, and BankTransactions. Connections are tenant-specific—multi-tenant apps must handle organization switching. Rate limits: 60 calls per minute per organization. ## PostgreSQL Best Practices Use connection pooling (PgBouncer) for web applications. Index foreign keys and frequently queried columns. Avoid N+1 queries—use JOINs or batch loading. For large tables, consider partitioning by date. Always use parameterized queries to prevent SQL injection. ## Redis Caching Patterns Use Redis for session storage, rate limiting, and cache-aside patterns. Set TTLs on cached data to prevent stale reads. Consider Redis Cluster for high availability. Monitor memory usage—Redis holds everything in RAM. ## HubSpot CRM Integration HubSpot offers a REST API and webhooks for real-time sync. Authentication uses private apps (access token) or OAuth for public apps. The CRM API covers contacts, companies, deals, and tickets. Use the Search API for complex queries. Webhook subscriptions require a valid endpoint that responds to verification challenges. ## Xero Accounting Integration Xero uses OAuth 2.0. The API base is https://api.xero.com/api.xro/2.0/. Endpoints include Invoices, Contacts, Payments, and BankTransactions. Connections are tenant-specific—multi-tenant apps must handle organization switching. Rate limits: 60 calls per minute per organization. ## PostgreSQL Best Practices Use connection pooling (PgBouncer) for web applications. Index foreign keys and frequently queried columns. Avoid N+1 queries—use JOINs or batch loading. For large tables, consider partitioning by date. Always use parameterized queries to prevent SQL injection. ## Redis Caching Patterns Use Redis for session storage, rate limiting, and cache-aside patterns. Set TTLs on cached data to prevent stale reads. Consider Redis Cluster for high availability. Monitor memory usage—Redis holds everything in RAM. ## HubSpot CRM Integration HubSpot offers a REST API and webhooks for real-time sync. Authentication uses private apps (access token) or OAuth for public apps. The CRM API covers contacts, companies, deals, and tickets. Use the Search API for complex queries. Webhook subscriptions require a valid endpoint that responds to verification challenges. ## Xero Accounting Integration Xero uses OAuth 2.0. The API base is https://api.xero.com/api.xro/2.0/. Endpoints include Invoices, Contacts, Payments, and BankTransactions. Connections are tenant-specific—multi-tenant apps must handle organization switching. Rate limits: 60 calls per minute per organization. ## PostgreSQL Best Practices Use connection pooling (PgBouncer) for web applications. Index foreign keys and frequently queried columns. Avoid N+1 queries—use JOINs or batch loading. For large tables, consider partitioning by date. Always use parameterized queries to prevent SQL injection. ## Redis Caching Patterns Use Redis for session storage, rate limiting, and cache-aside patterns. Set TTLs on cached data to prevent stale reads. Consider Redis Cluster for high availability. Monitor memory usage—Redis holds everything in RAM. ## HubSpot CRM Integration HubSpot offers a REST API and webhooks for real-time sync. Authentication uses private apps (access token) or OAuth for public apps. The CRM API covers contacts, companies, deals, and tickets. Use the Search API for complex queries. Webhook subscriptions require a valid endpoint that responds to verification challenges. ## Xero Accounting Integration Xero uses OAuth 2.0. The API base is https://api.xero.com/api.xro/2.0/. Endpoints include Invoices, Contacts, Payments, and BankTransactions. Connections are tenant-specific—multi-tenant apps must handle organization switching. Rate limits: 60 calls per minute per organization. ## PostgreSQL Best Practices Use connection pooling (PgBouncer) for web applications. Index foreign keys and frequently queried columns. Avoid N+1 queries—use JOINs or batch loading. For large tables, consider partitioning by date. Always use parameterized queries to prevent SQL injection. ## Redis Caching Patterns Use Redis for session storage, rate limiting, and cache-aside patterns. Set TTLs on cached data to prevent stale reads. Consider Redis Cluster for high availability. Monitor memory usage—Redis holds everything in RAM. ## HubSpot CRM Integration HubSpot offers a REST API and webhooks for real-time sync. Authentication uses private apps (access token) or OAuth for public apps. The CRM API covers contacts, companies, deals, and tickets. Use the Search API for complex queries. Webhook subscriptions require a valid endpoint that responds to verification challenges. ## Xero Accounting Integration Xero uses OAuth 2.0. The API base is https://api.xero.com/api.xro/2.0/. Endpoints include Invoices, Contacts, Payments, and BankTransactions. Connections are tenant-specific—multi-tenant apps must handle organization switching. Rate limits: 60 calls per minute per organization. ## PostgreSQL Best Practices Use connection pooling (PgBouncer) for web applications. Index foreign keys and frequently queried columns. Avoid N+1 queries—use JOINs or batch loading. For large tables, consider partitioning by date. Always use parameterized queries to prevent SQL injection. ## Redis Caching Patterns Use Redis for session storage, rate limiting, and cache-aside patterns. Set TTLs on cached data to prevent stale reads. Consider Redis Cluster for high availability. Monitor memory usage—Redis holds everything in RAM. ## HubSpot CRM Integration HubSpot offers a REST API and webhooks for real-time sync. Authentication uses private apps (access token) or OAuth for public apps. The CRM API covers contacts, companies, deals, and tickets. Use the Search API for complex queries. Webhook subscriptions require a valid endpoint that responds to verification challenges. ## Xero Accounting Integration Xero uses OAuth 2.0. The API base is https://api.xero.com/api.xro/2.0/. Endpoints include Invoices, Contacts, Payments, and BankTransactions. Connections are tenant-specific—multi-tenant apps must handle organization switching. Rate limits: 60 calls per minute per organization. ## PostgreSQL Best Practices Use connection pooling (PgBouncer) for web applications. Index foreign keys and frequently queried columns. Avoid N+1 queries—use JOINs or batch loading. For large tables, consider partitioning by date. Always use parameterized queries to prevent SQL injection. ## Redis Caching Patterns Use Redis for session storage, rate limiting, and cache-aside patterns. Set TTLs on cached data to prevent stale reads. Consider Redis Cluster for high availability. Monitor memory usage—Redis holds everything in RAM. ## HubSpot CRM Integration HubSpot offers a REST API and webhooks for real-time sync. Authentication uses private apps (access token) or OAuth for public apps. The CRM API covers contacts, companies, deals, and tickets. Use the Search API for complex queries. Webhook subscriptions require a valid endpoint that responds to verification challenges. ## Xero Accounting Integration Xero uses OAuth 2.0. The API base is https://api.xero.com/api.xro/2.0/. Endpoints include Invoices, Contacts, Payments, and BankTransactions. Connections are tenant-specific—multi-tenant apps must handle organization switching. Rate limits: 60 calls per minute per organization. ## PostgreSQL Best Practices Use connection pooling (PgBouncer) for web applications. Index foreign keys and frequently queried columns. Avoid N+1 queries—use JOINs or batch loading. For large tables, consider partitioning by date. Always use parameterized queries to prevent SQL injection. ## Redis Caching Patterns Use Redis for session storage, rate limiting, and cache-aside patterns. Set TTLs on cached data to prevent stale reads. Consider Redis Cluster for high availability. Monitor memory usage—Redis holds everything in RAM. ## HubSpot CRM Integration HubSpot offers a REST API and webhooks for real-time sync. Authentication uses private apps (access token) or OAuth for public apps. The CRM API covers contacts, companies, deals, and tickets. Use the Search API for complex queries. Webhook subscriptions require a valid endpoint that responds to verification challenges. ## Xero Accounting Integration Xero uses OAuth 2.0. The API base is https://api.xero.com/api.xro/2.0/. Endpoints include Invoices, Contacts, Payments, and BankTransactions. Connections are tenant-specific—multi-tenant apps must handle organization switching. Rate limits: 60 calls per minute per organization. ## PostgreSQL Best Practices Use connection pooling (PgBouncer) for web applications. Index foreign keys and frequently queried columns. Avoid N+1 queries—use JOINs or batch loading. For large tables, consider partitioning by date. Always use parameterized queries to prevent SQL injection. ## Redis Caching Patterns Use Redis for session storage, rate limiting, and cache-aside patterns. Set TTLs on cached data to prevent stale reads. Consider Redis Cluster for high availability. Monitor memory usage—Redis holds everything in RAM. ## HubSpot CRM Integration HubSpot offers a REST API and webhooks for real-time sync. Authentication uses private apps (access token) or OAuth for public apps. The CRM API covers contacts, companies, deals, and tickets. Use the Search API for complex queries. Webhook subscriptions require a valid endpoint that responds to verification challenges. ## Xero Accounting Integration Xero uses OAuth 2.0. The API base is https://api.xero.com/api.xro/2.0/. Endpoints include Invoices, Contacts, Payments, and BankTransactions. Connections are tenant-specific—multi-tenant apps must handle organization switching. Rate limits: 60 calls per minute per organization. ## PostgreSQL Best Practices Use connection pooling (PgBouncer) for web applications. Index foreign keys and frequently queried columns. Avoid N+1 queries—use JOINs or batch loading. For large tables, consider partitioning by date. Always use parameterized queries to prevent SQL injection. ## Redis Caching Patterns Use Redis for session storage, rate limiting, and cache-aside patterns. Set TTLs on cached data to prevent stale reads. Consider Redis Cluster for high availability. Monitor memory usage—Redis holds everything in RAM. ## HubSpot CRM Integration HubSpot offers a REST API and webhooks for real-time sync. Authentication uses private apps (access token) or OAuth for public apps. The CRM API covers contacts, companies, deals, and tickets. Use the Search API for complex queries. Webhook subscriptions require a valid endpoint that responds to verification challenges. ## Xero Accounting Integration Xero uses OAuth 2.0. The API base is https://api.xero.com/api.xro/2.0/. Endpoints include Invoices, Contacts, Payments, and BankTransactions. Connections are tenant-specific—multi-tenant apps must handle organization switching. Rate limits: 60 calls per minute per organization. ## PostgreSQL Best Practices Use connection pooling (PgBouncer) for web applications. Index foreign keys and frequently queried columns. Avoid N+1 queries—use JOINs or batch loading. For large tables, consider partitioning by date. Always use parameterized queries to prevent SQL injection. ## Redis Caching Patterns Use Redis for session storage, rate limiting, and cache-aside patterns. Set TTLs on cached data to prevent stale reads. Consider Redis Cluster for high availability. Monitor memory usage—Redis holds everything in RAM. ## HubSpot CRM Integration HubSpot offers a REST API and webhooks for real-time sync. Authentication uses private apps (access token) or OAuth for public apps. The CRM API covers contacts, companies, deals, and tickets. Use the Search API for complex queries. Webhook subscriptions require a valid endpoint that responds to verification challenges. ## Xero Accounting Integration Xero uses OAuth 2.0. The API base is https://api.xero.com/api.xro/2.0/. Endpoints include Invoices, Contacts, Payments, and BankTransactions. Connections are tenant-specific—multi-tenant apps must handle organization switching. Rate limits: 60 calls per minute per organization. ## PostgreSQL Best Practices Use connection pooling (PgBouncer) for web applications. Index foreign keys and frequently queried columns. Avoid N+1 queries—use JOINs or batch loading. For large tables, consider partitioning by date. Always use parameterized queries to prevent SQL injection. ## Redis Caching Patterns Use Redis for session storage, rate limiting, and cache-aside patterns. Set TTLs on cached data to prevent stale reads. Consider Redis Cluster for high availability. Monitor memory usage—Redis holds everything in RAM. ## HubSpot CRM Integration HubSpot offers a REST API and webhooks for real-time sync. Authentication uses private apps (access token) or OAuth for public apps. The CRM API covers contacts, companies, deals, and tickets. Use the Search API for complex queries. Webhook subscriptions require a valid endpoint that responds to verification challenges. ## Xero Accounting Integration Xero uses OAuth 2.0. The API base is https://api.xero.com/api.xro/2.0/. Endpoints include Invoices, Contacts, Payments, and BankTransactions. Connections are tenant-specific—multi-tenant apps must handle organization switching. Rate limits: 60 calls per minute per organization. ## PostgreSQL Best Practices Use connection pooling (PgBouncer) for web applications. Index foreign keys and frequently queried columns. Avoid N+1 queries—use JOINs or batch loading. For large tables, consider partitioning by date. Always use parameterized queries to prevent SQL injection. ## Redis Caching Patterns Use Redis for session storage, rate limiting, and cache-aside patterns. Set TTLs on cached data to prevent stale reads. Consider Redis Cluster for high availability. Monitor memory usage—Redis holds everything in RAM. ## HubSpot CRM Integration HubSpot offers a REST API and webhooks for real-time sync. Authentication uses private apps (access token) or OAuth for public apps. The CRM API covers contacts, companies, deals, and tickets. Use the Search API for complex queries. Webhook subscriptions require a valid endpoint that responds to verification challenges. ## Xero Accounting Integration Xero uses OAuth 2.0. The API base is https://api.xero.com/api.xro/2.0/. Endpoints include Invoices, Contacts, Payments, and BankTransactions. Connections are tenant-specific—multi-tenant apps must handle organization switching. Rate limits: 60 calls per minute per organization. ## PostgreSQL Best Practices Use connection pooling (PgBouncer) for web applications. Index foreign keys and frequently queried columns. Avoid N+1 queries—use JOINs or batch loading. For large tables, consider partitioning by date. Always use parameterized queries to prevent SQL injection. ## Redis Caching Patterns Use Redis for session storage, rate limiting, and cache-aside patterns. Set TTLs on cached data to prevent stale reads. Consider Redis Cluster for high availability. Monitor memory usage—Redis holds everything in RAM. ## HubSpot CRM Integration HubSpot offers a REST API and webhooks for real-time sync. Authentication uses private apps (access token) or OAuth for public apps. The CRM API covers contacts, companies, deals, and tickets. Use the Search API for complex queries. Webhook subscriptions require a valid endpoint that responds to verification challenges. ## Xero Accounting Integration Xero uses OAuth 2.0. The API base is https://api.xero.com/api.xro/2.0/. Endpoints include Invoices, Contacts, Payments, and BankTransactions. Connections are tenant-specific—multi-tenant apps must handle organization switching. Rate limits: 60 calls per minute per organization. ## PostgreSQL Best Practices Use connection pooling (PgBouncer) for web applications. Index foreign keys and frequently queried columns. Avoid N+1 queries—use JOINs or batch loading. For large tables, consider partitioning by date. Always use parameterized queries to prevent SQL injection. ## Redis Caching Patterns Use Redis for session storage, rate limiting, and cache-aside patterns. Set TTLs on cached data to prevent stale reads. Consider Redis Cluster for high availability. Monitor memory usage—Redis holds everything in RAM. ## HubSpot CRM Integration HubSpot offers a REST API and webhooks for real-time sync. Authentication uses private apps (access token) or OAuth for public apps. The CRM API covers contacts, companies, deals, and tickets. Use the Search API for complex queries. Webhook subscriptions require a valid endpoint that responds to verification challenges. ## Xero Accounting Integration Xero uses OAuth 2.0. The API base is https://api.xero.com/api.xro/2.0/. Endpoints include Invoices, Contacts, Payments, and BankTransactions. Connections are tenant-specific—multi-tenant apps must handle organization switching. Rate limits: 60 calls per minute per organization. ## PostgreSQL Best Practices Use connection pooling (PgBouncer) for web applications. Index foreign keys and frequently queried columns. Avoid N+1 queries—use JOINs or batch loading. For large tables, consider partitioning by date. Always use parameterized queries to prevent SQL injection. ## Redis Caching Patterns Use Redis for session storage, rate limiting, and cache-aside patterns. Set TTLs on cached data to prevent stale reads. Consider Redis Cluster for high availability. Monitor memory usage—Redis holds everything in RAM. ## HubSpot CRM Integration HubSpot offers a REST API and webhooks for real-time sync. Authentication uses private apps (access token) or OAuth for public apps. The CRM API covers contacts, companies, deals, and tickets. Use the Search API for complex queries. Webhook subscriptions require a valid endpoint that responds to verification challenges. ## Xero Accounting Integration Xero uses OAuth 2.0. The API base is https://api.xero.com/api.xro/2.0/. Endpoints include Invoices, Contacts, Payments, and BankTransactions. Connections are tenant-specific—multi-tenant apps must handle organization switching. Rate limits: 60 calls per minute per organization. ## PostgreSQL Best Practices Use connection pooling (PgBouncer) for web applications. Index foreign keys and frequently queried columns. Avoid N+1 queries—use JOINs or batch loading. For large tables, consider partitioning by date. Always use parameterized queries to prevent SQL injection. ## Redis Caching Patterns Use Redis for session storage, rate limiting, and cache-aside patterns. Set TTLs on cached data to prevent stale reads. Consider Redis Cluster for high availability. Monitor memory usage—Redis holds everything in RAM. ## HubSpot CRM Integration HubSpot offers a REST API and webhooks for real-time sync. Authentication uses private apps (access token) or OAuth for public apps. The CRM API covers contacts, companies, deals, and tickets. Use the Search API for complex queries. Webhook subscriptions require a valid endpoint that responds to verification challenges. ## Xero Accounting Integration Xero uses OAuth 2.0. The API base is https://api.xero.com/api.xro/2.0/. Endpoints include Invoices, Contacts, Payments, and BankTransactions. Connections are tenant-specific—multi-tenant apps must handle organization switching. Rate limits: 60 calls per minute per organization. ## PostgreSQL Best Practices Use connection pooling (PgBouncer) for web applications. Index foreign keys and frequently queried columns. Avoid N+1 queries—use JOINs or batch loading. For large tables, consider partitioning by date. Always use parameterized queries to prevent SQL injection. ## Redis Caching Patterns Use Redis for session storage, rate limiting, and cache-aside patterns. Set TTLs on cached data to prevent stale reads. Consider Redis Cluster for high availability. Monitor memory usage—Redis holds everything in RAM. ## HubSpot CRM Integration HubSpot offers a REST API and webhooks for real-time sync. Authentication uses private apps (access token) or OAuth for public apps. The CRM API covers contacts, companies, deals, and tickets. Use the Search API for complex queries. Webhook subscriptions require a valid endpoint that responds to verification challenges. ## Xero Accounting Integration Xero uses OAuth 2.0. The API base is https://api.xero.com/api.xro/2.0/. Endpoints include Invoices, Contacts, Payments, and BankTransactions. Connections are tenant-specific—multi-tenant apps must handle organization switching. Rate limits: 60 calls per minute per organization. ## PostgreSQL Best Practices Use connection pooling (PgBouncer) for web applications. Index foreign keys and frequently queried columns. Avoid N+1 queries—use JOINs or batch loading. For large tables, consider partitioning by date. Always use parameterized queries to prevent SQL injection. ## Redis Caching Patterns Use Redis for session storage, rate limiting, and cache-aside patterns. Set TTLs on cached data to prevent stale reads. Consider Redis Cluster for high availability. Monitor memory usage—Redis holds everything in RAM. ## HubSpot CRM Integration HubSpot offers a REST API and webhooks for real-time sync. Authentication uses private apps (access token) or OAuth for public apps. The CRM API covers contacts, companies, deals, and tickets. Use the Search API for complex queries. Webhook subscriptions require a valid endpoint that responds to verification challenges. ## Xero Accounting Integration Xero uses OAuth 2.0. The API base is https://api.xero.com/api.xro/2.0/. Endpoints include Invoices, Contacts, Payments, and BankTransactions. Connections are tenant-specific—multi-tenant apps must handle organization switching. Rate limits: 60 calls per minute per organization. ## PostgreSQL Best Practices Use connection pooling (PgBouncer) for web applications. Index foreign keys and frequently queried columns. Avoid N+1 queries—use JOINs or batch loading. For large tables, consider partitioning by date. Always use parameterized queries to prevent SQL injection. ## Redis Caching Patterns Use Redis for session storage, rate limiting, and cache-aside patterns. Set TTLs on cached data to prevent stale reads. Consider Redis Cluster for high availability. Monitor memory usage—Redis holds everything in RAM. ## HubSpot CRM Integration HubSpot offers a REST API and webhooks for real-time sync. Authentication uses private apps (access token) or OAuth for public apps. The CRM API covers contacts, companies, deals, and tickets. Use the Search API for complex queries. Webhook subscriptions require a valid endpoint that responds to verification challenges. ## Xero Accounting Integration Xero uses OAuth 2.0. The API base is https://api.xero.com/api.xro/2.0/. Endpoints include Invoices, Contacts, Payments, and BankTransactions. Connections are tenant-specific—multi-tenant apps must handle organization switching. Rate limits: 60 calls per minute per organization. ## PostgreSQL Best Practices Use connection pooling (PgBouncer) for web applications. Index foreign keys and frequently queried columns. Avoid N+1 queries—use JOINs or batch loading. For large tables, consider partitioning by date. Always use parameterized queries to prevent SQL injection. ## Redis Caching Patterns Use Redis for session storage, rate limiting, and cache-aside patterns. Set TTLs on cached data to prevent stale reads. Consider Redis Cluster for high availability. Monitor memory usage—Redis holds everything in RAM. ## HubSpot CRM Integration HubSpot offers a REST API and webhooks for real-time sync. Authentication uses private apps (access token) or OAuth for public apps. The CRM API covers contacts, companies, deals, and tickets. Use the Search API for complex queries. Webhook subscriptions require a valid endpoint that responds to verification challenges. ## Xero Accounting Integration Xero uses OAuth 2.0. The API base is https://api.xero.com/api.xro/2.0/. Endpoints include Invoices, Contacts, Payments, and BankTransactions. Connections are tenant-specific—multi-tenant apps must handle organization switching. Rate limits: 60 calls per minute per organization. ## PostgreSQL Best Practices Use connection pooling (PgBouncer) for web applications. Index foreign keys and frequently queried columns. Avoid N+1 queries—use JOINs or batch loading. For large tables, consider partitioning by date. Always use parameterized queries to prevent SQL injection. ## Redis Caching Patterns Use Redis for session storage, rate limiting, and cache-aside patterns. Set TTLs on cached data to prevent stale reads. Consider Redis Cluster for high availability. Monitor memory usage—Redis holds everything in RAM. ## HubSpot CRM Integration HubSpot offers a REST API and webhooks for real-time sync. Authentication uses private apps (access token) or OAuth for public apps. The CRM API covers contacts, companies, deals, and tickets. Use the Search API for complex queries. Webhook subscriptions require a valid endpoint that responds to verification challenges. ## Xero Accounting Integration Xero uses OAuth 2.0. The API base is https://api.xero.com/api.xro/2.0/. Endpoints include Invoices, Contacts, Payments, and BankTransactions. Connections are tenant-specific—multi-tenant apps must handle organization switching. Rate limits: 60 calls per minute per organization. ## PostgreSQL Best Practices Use connection pooling (PgBouncer) for web applications. Index foreign keys and frequently queried columns. Avoid N+1 queries—use JOINs or batch loading. For large tables, consider partitioning by date. Always use parameterized queries to prevent SQL injection. ## Redis Caching Patterns Use Redis for session storage, rate limiting, and cache-aside patterns. Set TTLs on cached data to prevent stale reads. Consider Redis Cluster for high availability. Monitor memory usage—Redis holds everything in RAM. ## HubSpot CRM Integration HubSpot offers a REST API and webhooks for real-time sync. Authentication uses private apps (access token) or OAuth for public apps. The CRM API covers contacts, companies, deals, and tickets. Use the Search API for complex queries. Webhook subscriptions require a valid endpoint that responds to verification challenges. ## Xero Accounting Integration Xero uses OAuth 2.0. The API base is https://api.xero.com/api.xro/2.0/. Endpoints include Invoices, Contacts, Payments, and BankTransactions. Connections are tenant-specific—multi-tenant apps must handle organization switching. Rate limits: 60 calls per minute per organization. ## PostgreSQL Best Practices Use connection pooling (PgBouncer) for web applications. Index foreign keys and frequently queried columns. Avoid N+1 queries—use JOINs or batch loading. For large tables, consider partitioning by date. Always use parameterized queries to prevent SQL injection. ## Redis Caching Patterns Use Redis for session storage, rate limiting, and cache-aside patterns. Set TTLs on cached data to prevent stale reads. Consider Redis Cluster for high availability. Monitor memory usage—Redis holds everything in RAM. ## HubSpot CRM Integration HubSpot offers a REST API and webhooks for real-time sync. Authentication uses private apps (access token) or OAuth for public apps. The CRM API covers contacts, companies, deals, and tickets. Use the Search API for complex queries. Webhook subscriptions require a valid endpoint that responds to verification challenges. ## Xero Accounting Integration Xero uses OAuth 2.0. The API base is https://api.xero.com/api.xro/2.0/. Endpoints include Invoices, Contacts, Payments, and BankTransactions. Connections are tenant-specific—multi-tenant apps must handle organization switching. Rate limits: 60 calls per minute per organization. ## PostgreSQL Best Practices Use connection pooling (PgBouncer) for web applications. Index foreign keys and frequently queried columns. Avoid N+1 queries—use JOINs or batch loading. For large tables, consider partitioning by date. Always use parameterized queries to prevent SQL injection. ## Redis Caching Patterns Use Redis for session storage, rate limiting, and cache-aside patterns. Set TTLs on cached data to prevent stale reads. Consider Redis Cluster for high availability. Monitor memory usage—Redis holds everything in RAM. ## HubSpot CRM Integration HubSpot offers a REST API and webhooks for real-time sync. Authentication uses private apps (access token) or OAuth for public apps. The CRM API covers contacts, companies, deals, and tickets. Use the Search API for complex queries. Webhook subscriptions require a valid endpoint that responds to verification challenges. ## Xero Accounting Integration Xero uses OAuth 2.0. The API base is https://api.xero.com/api.xro/2.0/. Endpoints include Invoices, Contacts, Payments, and BankTransactions. Connections are tenant-specific—multi-tenant apps must handle organization switching. Rate limits: 60 calls per minute per organization. ## PostgreSQL Best Practices Use connection pooling (PgBouncer) for web applications. Index foreign keys and frequently queried columns. Avoid N+1 queries—use JOINs or batch loading. For large tables, consider partitioning by date. Always use parameterized queries to prevent SQL injection. ## Redis Caching Patterns Use Redis for session storage, rate limiting, and cache-aside patterns. Set TTLs on cached data to prevent stale reads. Consider Redis Cluster for high availability. Monitor memory usage—Redis holds everything in RAM. ## HubSpot CRM Integration HubSpot offers a REST API and webhooks for real-time sync. Authentication uses private apps (access token) or OAuth for public apps. The CRM API covers contacts, companies, deals, and tickets. Use the Search API for complex queries. Webhook subscriptions require a valid endpoint that responds to verification challenges. ## Xero Accounting Integration Xero uses OAuth 2.0. The API base is https://api.xero.com/api.xro/2.0/. Endpoints include Invoices, Contacts, Payments, and BankTransactions. Connections are tenant-specific—multi-tenant apps must handle organization switching. Rate limits: 60 calls per minute per organization. ## PostgreSQL Best Practices Use connection pooling (PgBouncer) for web applications. Index foreign keys and frequently queried columns. Avoid N+1 queries—use JOINs or batch loading. For large tables, consider partitioning by date. Always use parameterized queries to prevent SQL injection. ## Redis Caching Patterns Use Redis for session storage, rate limiting, and cache-aside patterns. Set TTLs on cached data to prevent stale reads. Consider Redis Cluster for high availability. Monitor memory usage—Redis holds everything in RAM. ## HubSpot CRM Integration HubSpot offers a REST API and webhooks for real-time sync. Authentication uses private apps (access token) or OAuth for public apps. The CRM API covers contacts, companies, deals, and tickets. Use the Search API for complex queries. Webhook subscriptions require a valid endpoint that responds to verification challenges. ## Xero Accounting Integration Xero uses OAuth 2.0. The API base is https://api.xero.com/api.xro/2.0/. Endpoints include Invoices, Contacts, Payments, and BankTransactions. Connections are tenant-specific—multi-tenant apps must handle organization switching. Rate limits: 60 calls per minute per organization. ## PostgreSQL Best Practices Use connection pooling (PgBouncer) for web applications. Index foreign keys and frequently queried columns. Avoid N+1 queries—use JOINs or batch loading. For large tables, consider partitioning by date. Always use parameterized queries to prevent SQL injection. ## Redis Caching Patterns Use Redis for session storage, rate limiting, and cache-aside patterns. Set TTLs on cached data to prevent stale reads. Consider Redis Cluster for high availability. Monitor memory usage—Redis holds everything in RAM. ## HubSpot CRM Integration HubSpot offers a REST API and webhooks for real-time sync. Authentication uses private apps (access token) or OAuth for public apps. The CRM API covers contacts, companies, deals, and tickets. Use the Search API for complex queries. Webhook subscriptions require a valid endpoint that responds to verification challenges. ## Xero Accounting Integration Xero uses OAuth 2.0. The API base is https://api.xero.com/api.xro/2.0/. Endpoints include Invoices, Contacts, Payments, and BankTransactions. Connections are tenant-specific—multi-tenant apps must handle organization switching. Rate limits: 60 calls per minute per organization. ## PostgreSQL Best Practices Use connection pooling (PgBouncer) for web applications. Index foreign keys and frequently queried columns. Avoid N+1 queries—use JOINs or batch loading. For large tables, consider partitioning by date. Always use parameterized queries to prevent SQL injection. ## Redis Caching Patterns Use Redis for session storage, rate limiting, and cache-aside patterns. Set TTLs on cached data to prevent stale reads. Consider Redis Cluster for high availability. Monitor memory usage—Redis holds everything in RAM. ## HubSpot CRM Integration HubSpot offers a REST API and webhooks for real-time sync. Authentication uses private apps (access token) or OAuth for public apps. The CRM API covers contacts, companies, deals, and tickets. Use the Search API for complex queries. Webhook subscriptions require a valid endpoint that responds to verification challenges. ## Xero Accounting Integration Xero uses OAuth 2.0. The API base is https://api.xero.com/api.xro/2.0/. Endpoints include Invoices, Contacts, Payments, and BankTransactions. Connections are tenant-specific—multi-tenant apps must handle organization switching. Rate limits: 60 calls per minute per organization. ## PostgreSQL Best Practices Use connection pooling (PgBouncer) for web applications. Index foreign keys and frequently queried columns. Avoid N+1 queries—use JOINs or batch loading. For large tables, consider partitioning by date. Always use parameterized queries to prevent SQL injection. ## Redis Caching Patterns Use Redis for session storage, rate limiting, and cache-aside patterns. Set TTLs on cached data to prevent stale reads. Consider Redis Cluster for high availability. Monitor memory usage—Redis holds everything in RAM. ## HubSpot CRM Integration HubSpot offers a REST API and webhooks for real-time sync. Authentication uses private apps (access token) or OAuth for public apps. The CRM API covers contacts, companies, deals, and tickets. Use the Search API for complex queries. Webhook subscriptions require a valid endpoint that responds to verification challenges. ## Xero Accounting Integration Xero uses OAuth 2.0. The API base is https://api.xero.com/api.xro/2.0/. Endpoints include Invoices, Contacts, Payments, and BankTransactions. Connections are tenant-specific—multi-tenant apps must handle organization switching. Rate limits: 60 calls per minute per organization. ## PostgreSQL Best Practices Use connection pooling (PgBouncer) for web applications. Index foreign keys and frequently queried columns. Avoid N+1 queries—use JOINs or batch loading. For large tables, consider partitioning by date. Always use parameterized queries to prevent SQL injection. ## Redis Caching Patterns Use Redis for session storage, rate limiting, and cache-aside patterns. Set TTLs on cached data to prevent stale reads. Consider Redis Cluster for high availability. Monitor memory usage—Redis holds everything in RAM. ## HubSpot CRM Integration HubSpot offers a REST API and webhooks for real-time sync. Authentication uses private apps (access token) or OAuth for public apps. The CRM API covers contacts, companies, deals, and tickets. Use the Search API for complex queries. Webhook subscriptions require a valid endpoint that responds to verification challenges. ## Xero Accounting Integration Xero uses OAuth 2.0. The API base is https://api.xero.com/api.xro/2.0/. Endpoints include Invoices, Contacts, Payments, and BankTransactions. Connections are tenant-specific—multi-tenant apps must handle organization switching. Rate limits: 60 calls per minute per organization. ## PostgreSQL Best Practices Use connection pooling (PgBouncer) for web applications. Index foreign keys and frequently queried columns. Avoid N+1 queries—use JOINs or batch loading. For large tables, consider partitioning by date. Always use parameterized queries to prevent SQL injection. ## Redis Caching Patterns Use Redis for session storage, rate limiting, and cache-aside patterns. Set TTLs on cached data to prevent stale reads. Consider Redis Cluster for high availability. Monitor memory usage—Redis holds everything in RAM. ## HubSpot CRM Integration HubSpot offers a REST API and webhooks for real-time sync. Authentication uses private apps (access token) or OAuth for public apps. The CRM API covers contacts, companies, deals, and tickets. Use the Search API for complex queries. Webhook subscriptions require a valid endpoint that responds to verification challenges. ## Xero Accounting Integration Xero uses OAuth 2.0. The API base is https://api.xero.com/api.xro/2.0/. Endpoints include Invoices, Contacts, Payments, and BankTransactions. Connections are tenant-specific—multi-tenant apps must handle organization switching. Rate limits: 60 calls per minute per organization. ## PostgreSQL Best Practices Use connection pooling (PgBouncer) for web applications. Index foreign keys and frequently queried columns. Avoid N+1 queries—use JOINs or batch loading. For large tables, consider partitioning by date. Always use parameterized queries to prevent SQL injection. ## Redis Caching Patterns Use Redis for session storage, rate limiting, and cache-aside patterns. Set TTLs on cached data to prevent stale reads. Consider Redis Cluster for high availability. Monitor memory usage—Redis holds everything in RAM. ## HubSpot CRM Integration HubSpot offers a REST API and webhooks for real-time sync. Authentication uses private apps (access token) or OAuth for public apps. The CRM API covers contacts, companies, deals, and tickets. Use the Search API for complex queries. Webhook subscriptions require a valid endpoint that responds to verification challenges. ## Xero Accounting Integration Xero uses OAuth 2.0. The API base is https://api.xero.com/api.xro/2.0/. Endpoints include Invoices, Contacts, Payments, and BankTransactions. Connections are tenant-specific—multi-tenant apps must handle organization switching. Rate limits: 60 calls per minute per organization. ## PostgreSQL Best Practices Use connection pooling (PgBouncer) for web applications. Index foreign keys and frequently queried columns. Avoid N+1 queries—use JOINs or batch loading. For large tables, consider partitioning by date. Always use parameterized queries to prevent SQL injection. ## Redis Caching Patterns Use Redis for session storage, rate limiting, and cache-aside patterns. Set TTLs on cached data to prevent stale reads. Consider Redis Cluster for high availability. Monitor memory usage—Redis holds everything in RAM. ## HubSpot CRM Integration HubSpot offers a REST API and webhooks for real-time sync. Authentication uses private apps (access token) or OAuth for public apps. The CRM API covers contacts, companies, deals, and tickets. Use the Search API for complex queries. Webhook subscriptions require a valid endpoint that responds to verification challenges. ## Xero Accounting Integration Xero uses OAuth 2.0. The API base is https://api.xero.com/api.xro/2.0/. Endpoints include Invoices, Contacts, Payments, and BankTransactions. Connections are tenant-specific—multi-tenant apps must handle organization switching. Rate limits: 60 calls per minute per organization. ## PostgreSQL Best Practices Use connection pooling (PgBouncer) for web applications. Index foreign keys and frequently queried columns. Avoid N+1 queries—use JOINs or batch loading. For large tables, consider partitioning by date. Always use parameterized queries to prevent SQL injection. ## Redis Caching Patterns Use Redis for session storage, rate limiting, and cache-aside patterns. Set TTLs on cached data to prevent stale reads. Consider Redis Cluster for high availability. Monitor memory usage—Redis holds everything in RAM. ## HubSpot CRM Integration HubSpot offers a REST API and webhooks for real-time sync. Authentication uses private apps (access token) or OAuth for public apps. The CRM API covers contacts, companies, deals, and tickets. Use the Search API for complex queries. Webhook subscriptions require a valid endpoint that responds to verification challenges. ## Xero Accounting Integration Xero uses OAuth 2.0. The API base is https://api.xero.com/api.xro/2.0/. Endpoints include Invoices, Contacts, Payments, and BankTransactions. Connections are tenant-specific—multi-tenant apps must handle organization switching. Rate limits: 60 calls per minute per organization. ## PostgreSQL Best Practices Use connection pooling (PgBouncer) for web applications. Index foreign keys and frequently queried columns. Avoid N+1 queries—use JOINs or batch loading. For large tables, consider partitioning by date. Always use parameterized queries to prevent SQL injection. ## Redis Caching Patterns Use Redis for session storage, rate limiting, and cache-aside patterns. Set TTLs on cached data to prevent stale reads. Consider Redis Cluster for high availability. Monitor memory usage—Redis holds everything in RAM. ## HubSpot CRM Integration HubSpot offers a REST API and webhooks for real-time sync. Authentication uses private apps (access token) or OAuth for public apps. The CRM API covers contacts, companies, deals, and tickets. Use the Search API for complex queries. Webhook subscriptions require a valid endpoint that responds to verification challenges. ## Xero Accounting Integration Xero uses OAuth 2.0. The API base is https://api.xero.com/api.xro/2.0/. Endpoints include Invoices, Contacts, Payments, and BankTransactions. Connections are tenant-specific—multi-tenant apps must handle organization switching. Rate limits: 60 calls per minute per organization. ## PostgreSQL Best Practices Use connection pooling (PgBouncer) for web applications. Index foreign keys and frequently queried columns. Avoid N+1 queries—use JOINs or batch loading. For large tables, consider partitioning by date. Always use parameterized queries to prevent SQL injection. ## Redis Caching Patterns Use Redis for session storage, rate limiting, and cache-aside patterns. Set TTLs on cached data to prevent stale reads. Consider Redis Cluster for high availability. Monitor memory usage—Redis holds everything in RAM. ## HubSpot CRM Integration HubSpot offers a REST API and webhooks for real-time sync. Authentication uses private apps (access token) or OAuth for public apps. The CRM API covers contacts, companies, deals, and tickets. Use the Search API for complex queries. Webhook subscriptions require a valid endpoint that responds to verification challenges. ## Xero Accounting Integration Xero uses OAuth 2.0. The API base is https://api.xero.com/api.xro/2.0/. Endpoints include Invoices, Contacts, Payments, and BankTransactions. Connections are tenant-specific—multi-tenant apps must handle organization switching. Rate limits: 60 calls per minute per organization. ## PostgreSQL Best Practices Use connection pooling (PgBouncer) for web applications. Index foreign keys and frequently queried columns. Avoid N+1 queries—use JOINs or batch loading. For large tables, consider partitioning by date. Always use parameterized queries to prevent SQL injection. ## Redis Caching Patterns Use Redis for session storage, rate limiting, and cache-aside patterns. Set TTLs on cached data to prevent stale reads. Consider Redis Cluster for high availability. Monitor memory usage—Redis holds everything in RAM. ## HubSpot CRM Integration HubSpot offers a REST API and webhooks for real-time sync. Authentication uses private apps (access token) or OAuth for public apps. The CRM API covers contacts, companies, deals, and tickets. Use the Search API for complex queries. Webhook subscriptions require a valid endpoint that responds to verification challenges. ## Xero Accounting Integration Xero uses OAuth 2.0. The API base is https://api.xero.com/api.xro/2.0/. Endpoints include Invoices, Contacts, Payments, and BankTransactions. Connections are tenant-specific—multi-tenant apps must handle organization switching. Rate limits: 60 calls per minute per organization. ## PostgreSQL Best Practices Use connection pooling (PgBouncer) for web applications. Index foreign keys and frequently queried columns. Avoid N+1 queries—use JOINs or batch loading. For large tables, consider partitioning by date. Always use parameterized queries to prevent SQL injection. ## Redis Caching Patterns Use Redis for session storage, rate limiting, and cache-aside patterns. Set TTLs on cached data to prevent stale reads. Consider Redis Cluster for high availability. Monitor memory usage—Redis holds everything in RAM. ## HubSpot CRM Integration HubSpot offers a REST API and webhooks for real-time sync. Authentication uses private apps (access token) or OAuth for public apps. The CRM API covers contacts, companies, deals, and tickets. Use the Search API for complex queries. Webhook subscriptions require a valid endpoint that responds to verification challenges. ## Xero Accounting Integration Xero uses OAuth 2.0. The API base is https://api.xero.com/api.xro/2.0/. Endpoints include Invoices, Contacts, Payments, and BankTransactions. Connections are tenant-specific—multi-tenant apps must handle organization switching. Rate limits: 60 calls per minute per organization. ## PostgreSQL Best Practices Use connection pooling (PgBouncer) for web applications. Index foreign keys and frequently queried columns. Avoid N+1 queries—use JOINs or batch loading. For large tables, consider partitioning by date. Always use parameterized queries to prevent SQL injection. ## Redis Caching Patterns Use Redis for session storage, rate limiting, and cache-aside patterns. Set TTLs on cached data to prevent stale reads. Consider Redis Cluster for high availability. Monitor memory usage—Redis holds everything in RAM. ## HubSpot CRM Integration HubSpot offers a REST API and webhooks for real-time sync. Authentication uses private apps (access token) or OAuth for public apps. The CRM API covers contacts, companies, deals, and tickets. Use the Search API for complex queries. Webhook subscriptions require a valid endpoint that responds to verification challenges. ## Xero Accounting Integration Xero uses OAuth 2.0. The API base is https://api.xero.com/api.xro/2.0/. Endpoints include Invoices, Contacts, Payments, and BankTransactions. Connections are tenant-specific—multi-tenant apps must handle organization switching. Rate limits: 60 calls per minute per organization. ## PostgreSQL Best Practices Use connection pooling (PgBouncer) for web applications. Index foreign keys and frequently queried columns. Avoid N+1 queries—use JOINs or batch loading. For large tables, consider partitioning by date. Always use parameterized queries to prevent SQL injection. ## Redis Caching Patterns Use Redis for session storage, rate limiting, and cache-aside patterns. Set TTLs on cached data to prevent stale reads. Consider Redis Cluster for high availability. Monitor memory usage—Redis holds everything in RAM. ## HubSpot CRM Integration HubSpot offers a REST API and webhooks for real-time sync. Authentication uses private apps (access token) or OAuth for public apps. The CRM API covers contacts, companies, deals, and tickets. Use the Search API for complex queries. Webhook subscriptions require a valid endpoint that responds to verification challenges. ## Xero Accounting Integration Xero uses OAuth 2.0. The API base is https://api.xero.com/api.xro/2.0/. Endpoints include Invoices, Contacts, Payments, and BankTransactions. Connections are tenant-specific—multi-tenant apps must handle organization switching. Rate limits: 60 calls per minute per organization. ## PostgreSQL Best Practices Use connection pooling (PgBouncer) for web applications. Index foreign keys and frequently queried columns. Avoid N+1 queries—use JOINs or batch loading. For large tables, consider partitioning by date. Always use parameterized queries to prevent SQL injection. ## Redis Caching Patterns Use Redis for session storage, rate limiting, and cache-aside patterns. Set TTLs on cached data to prevent stale reads. Consider Redis Cluster for high availability. Monitor memory usage—Redis holds everything in RAM. ## HubSpot CRM Integration HubSpot offers a REST API and webhooks for real-time sync. Authentication uses private apps (access token) or OAuth for public apps. The CRM API covers contacts, companies, deals, and tickets. Use the Search API for complex queries. Webhook subscriptions require a valid endpoint that responds to verification challenges. ## Xero Accounting Integration Xero uses OAuth 2.0. The API base is https://api.xero.com/api.xro/2.0/. Endpoints include Invoices, Contacts, Payments, and BankTransactions. Connections are tenant-specific—multi-tenant apps must handle organization switching. Rate limits: 60 calls per minute per organization. ## PostgreSQL Best Practices Use connection pooling (PgBouncer) for web applications. Index foreign keys and frequently queried columns. Avoid N+1 queries—use JOINs or batch loading. For large tables, consider partitioning by date. Always use parameterized queries to prevent SQL injection. ## Redis Caching Patterns Use Redis for session storage, rate limiting, and cache-aside patterns. Set TTLs on cached data to prevent stale reads. Consider Redis Cluster for high availability. Monitor memory usage—Redis holds everything in RAM. ## HubSpot CRM Integration HubSpot offers a REST API and webhooks for real-time sync. Authentication uses private apps (access token) or OAuth for public apps. The CRM API covers contacts, companies, deals, and tickets. Use the Search API for complex queries. Webhook subscriptions require a valid endpoint that responds to verification challenges. ## Xero Accounting Integration Xero uses OAuth 2.0. The API base is https://api.xero.com/api.xro/2.0/. Endpoints include Invoices, Contacts, Payments, and BankTransactions. Connections are tenant-specific—multi-tenant apps must handle organization switching. Rate limits: 60 calls per minute per organization. ## PostgreSQL Best Practices Use connection pooling (PgBouncer) for web applications. Index foreign keys and frequently queried columns. Avoid N+1 queries—use JOINs or batch loading. For large tables, consider partitioning by date. Always use parameterized queries to prevent SQL injection. ## Redis Caching Patterns Use Redis for session storage, rate limiting, and cache-aside patterns. Set TTLs on cached data to prevent stale reads. Consider Redis Cluster for high availability. Monitor memory usage—Redis holds everything in RAM. ## HubSpot CRM Integration HubSpot offers a REST API and webhooks for real-time sync. Authentication uses private apps (access token) or OAuth for public apps. The CRM API covers contacts, companies, deals, and tickets. Use the Search API for complex queries. Webhook subscriptions require a valid endpoint that responds to verification challenges. ## Xero Accounting Integration Xero uses OAuth 2.0. The API base is https://api.xero.com/api.xro/2.0/. Endpoints include Invoices, Contacts, Payments, and BankTransactions. Connections are tenant-specific—multi-tenant apps must handle organization switching. Rate limits: 60 calls per minute per organization. ## PostgreSQL Best Practices Use connection pooling (PgBouncer) for web applications. Index foreign keys and frequently queried columns. Avoid N+1 queries—use JOINs or batch loading. For large tables, consider partitioning by date. Always use parameterized queries to prevent SQL injection. ## Redis Caching Patterns Use Redis for session storage, rate limiting, and cache-aside patterns. Set TTLs on cached data to prevent stale reads. Consider Redis Cluster for high availability. Monitor memory usage—Redis holds everything in RAM. ## HubSpot CRM Integration HubSpot offers a REST API and webhooks for real-time sync. Authentication uses private apps (access token) or OAuth for public apps. The CRM API covers contacts, companies, deals, and tickets. Use the Search API for complex queries. Webhook subscriptions require a valid endpoint that responds to verification challenges. ## Xero Accounting Integration Xero uses OAuth 2.0. The API base is https://api.xero.com/api.xro/2.0/. Endpoints include Invoices, Contacts, Payments, and BankTransactions. Connections are tenant-specific—multi-tenant apps must handle organization switching. Rate limits: 60 calls per minute per organization. ## PostgreSQL Best Practices Use connection pooling (PgBouncer) for web applications. Index foreign keys and frequently queried columns. Avoid N+1 queries—use JOINs or batch loading. For large tables, consider partitioning by date. Always use parameterized queries to prevent SQL injection. ## Redis Caching Patterns Use Redis for session storage, rate limiting, and cache-aside patterns. Set TTLs on cached data to prevent stale reads. Consider Redis Cluster for high availability. Monitor memory usage—Redis holds everything in RAM. ## HubSpot CRM Integration HubSpot offers a REST API and webhooks for real-time sync. Authentication uses private apps (access token) or OAuth for public apps. The CRM API covers contacts, companies, deals, and tickets. Use the Search API for complex queries. Webhook subscriptions require a valid endpoint that responds to verification challenges. ## Xero Accounting Integration Xero uses OAuth 2.0. The API base is https://api.xero.com/api.xro/2.0/. Endpoints include Invoices, Contacts, Payments, and BankTransactions. Connections are tenant-specific—multi-tenant apps must handle organization switching. Rate limits: 60 calls per minute per organization. ## PostgreSQL Best Practices Use connection pooling (PgBouncer) for web applications. Index foreign keys and frequently queried columns. Avoid N+1 queries—use JOINs or batch loading. For large tables, consider partitioning by date. Always use parameterized queries to prevent SQL injection. ## Redis Caching Patterns Use Redis for session storage, rate limiting, and cache-aside patterns. Set TTLs on cached data to prevent stale reads. Consider Redis Cluster for high availability. Monitor memory usage—Redis holds everything in RAM. ## HubSpot CRM Integration HubSpot offers a REST API and webhooks for real-time sync. Authentication uses private apps (access token) or OAuth for public apps. The CRM API covers contacts, companies, deals, and tickets. Use the Search API for complex queries. Webhook subscriptions require a valid endpoint that responds to verification challenges. ## Xero Accounting Integration Xero uses OAuth 2.0. The API base is https://api.xero.com/api.xro/2.0/. Endpoints include Invoices, Contacts, Payments, and BankTransactions. Connections are tenant-specific—multi-tenant apps must handle organization switching. Rate limits: 60 calls per minute per organization. ## PostgreSQL Best Practices Use connection pooling (PgBouncer) for web applications. Index foreign keys and frequently queried columns. Avoid N+1 queries—use JOINs or batch loading. For large tables, consider partitioning by date. Always use parameterized queries to prevent SQL injection. ## Redis Caching Patterns Use Redis for session storage, rate limiting, and cache-aside patterns. Set TTLs on cached data to prevent stale reads. Consider Redis Cluster for high availability. Monitor memory usage—Redis holds everything in RAM. ## HubSpot CRM Integration HubSpot offers a REST API and webhooks for real-time sync. Authentication uses private apps (access token) or OAuth for public apps. The CRM API covers contacts, companies, deals, and tickets. Use the Search API for complex queries. Webhook subscriptions require a valid endpoint that responds to verification challenges. ## Xero Accounting Integration Xero uses OAuth 2.0. The API base is https://api.xero.com/api.xro/2.0/. Endpoints include Invoices, Contacts, Payments, and BankTransactions. Connections are tenant-specific—multi-tenant apps must handle organization switching. Rate limits: 60 calls per minute per organization. ## PostgreSQL Best Practices Use connection pooling (PgBouncer) for web applications. Index foreign keys and frequently queried columns. Avoid N+1 queries—use JOINs or batch loading. For large tables, consider partitioning by date. Always use parameterized queries to prevent SQL injection. ## Redis Caching Patterns Use Redis for session storage, rate limiting, and cache-aside patterns. Set TTLs on cached data to prevent stale reads. Consider Redis Cluster for high availability. Monitor memory usage—Redis holds everything in RAM. ## HubSpot CRM Integration HubSpot offers a REST API and webhooks for real-time sync. Authentication uses private apps (access token) or OAuth for public apps. The CRM API covers contacts, companies, deals, and tickets. Use the Search API for complex queries. Webhook subscriptions require a valid endpoint that responds to verification challenges. ## Xero Accounting Integration Xero uses OAuth 2.0. The API base is https://api.xero.com/api.xro/2.0/. Endpoints include Invoices, Contacts, Payments, and BankTransactions. Connections are tenant-specific—multi-tenant apps must handle organization switching. Rate limits: 60 calls per minute per organization. ## PostgreSQL Best Practices Use connection pooling (PgBouncer) for web applications. Index foreign keys and frequently queried columns. Avoid N+1 queries—use JOINs or batch loading. For large tables, consider partitioning by date. Always use parameterized queries to prevent SQL injection. ## Redis Caching Patterns Use Redis for session storage, rate limiting, and cache-aside patterns. Set TTLs on cached data to prevent stale reads. Consider Redis Cluster for high availability. Monitor memory usage—Redis holds everything in RAM. ## HubSpot CRM Integration HubSpot offers a REST API and webhooks for real-time sync. Authentication uses private apps (access token) or OAuth for public apps. The CRM API covers contacts, companies, deals, and tickets. Use the Search API for complex queries. Webhook subscriptions require a valid endpoint that responds to verification challenges. ## Xero Accounting Integration Xero uses OAuth 2.0. The API base is https://api.xero.com/api.xro/2.0/. Endpoints include Invoices, Contacts, Payments, and BankTransactions. Connections are tenant-specific—multi-tenant apps must handle organization switching. Rate limits: 60 calls per minute per organization. ## PostgreSQL Best Practices Use connection pooling (PgBouncer) for web applications. Index foreign keys and frequently queried columns. Avoid N+1 queries—use JOINs or batch loading. For large tables, consider partitioning by date. Always use parameterized queries to prevent SQL injection. ## Redis Caching Patterns Use Redis for session storage, rate limiting, and cache-aside patterns. Set TTLs on cached data to prevent stale reads. Consider Redis Cluster for high availability. Monitor memory usage—Redis holds everything in RAM. ## HubSpot CRM Integration HubSpot offers a REST API and webhooks for real-time sync. Authentication uses private apps (access token) or OAuth for public apps. The CRM API covers contacts, companies, deals, and tickets. Use the Search API for complex queries. Webhook subscriptions require a valid endpoint that responds to verification challenges. ## Xero Accounting Integration Xero uses OAuth 2.0. The API base is https://api.xero.com/api.xro/2.0/. Endpoints include Invoices, Contacts, Payments, and BankTransactions. Connections are tenant-specific—multi-tenant apps must handle organization switching. Rate limits: 60 calls per minute per organization. ## PostgreSQL Best Practices Use connection pooling (PgBouncer) for web applications. Index foreign keys and frequently queried columns. Avoid N+1 queries—use JOINs or batch loading. For large tables, consider partitioning by date. Always use parameterized queries to prevent SQL injection. ## Redis Caching Patterns Use Redis for session storage, rate limiting, and cache-aside patterns. Set TTLs on cached data to prevent stale reads. Consider Redis Cluster for high availability. Monitor memory usage—Redis holds everything in RAM. ## HubSpot CRM Integration HubSpot offers a REST API and webhooks for real-time sync. Authentication uses private apps (access token) or OAuth for public apps. The CRM API covers contacts, companies, deals, and tickets. Use the Search API for complex queries. Webhook subscriptions require a valid endpoint that responds to verification challenges. ## Xero Accounting Integration Xero uses OAuth 2.0. The API base is https://api.xero.com/api.xro/2.0/. Endpoints include Invoices, Contacts, Payments, and BankTransactions. Connections are tenant-specific—multi-tenant apps must handle organization switching. Rate limits: 60 calls per minute per organization. ## PostgreSQL Best Practices Use connection pooling (PgBouncer) for web applications. Index foreign keys and frequently queried columns. Avoid N+1 queries—use JOINs or batch loading. For large tables, consider partitioning by date. Always use parameterized queries to prevent SQL injection. ## Redis Caching Patterns Use Redis for session storage, rate limiting, and cache-aside patterns. Set TTLs on cached data to prevent stale reads. Consider Redis Cluster for high availability. Monitor memory usage—Redis holds everything in RAM. ## HubSpot CRM Integration HubSpot offers a REST API and webhooks for real-time sync. Authentication uses private apps (access token) or OAuth for public apps. The CRM API covers contacts, companies, deals, and tickets. Use the Search API for complex queries. Webhook subscriptions require a valid endpoint that responds to verification challenges. ## Xero Accounting Integration Xero uses OAuth 2.0. The API base is https://api.xero.com/api.xro/2.0/. Endpoints include Invoices, Contacts, Payments, and BankTransactions. Connections are tenant-specific—multi-tenant apps must handle organization switching. Rate limits: 60 calls per minute per organization. ## PostgreSQL Best Practices Use connection pooling (PgBouncer) for web applications. Index foreign keys and frequently queried columns. Avoid N+1 queries—use JOINs or batch loading. For large tables, consider partitioning by date. Always use parameterized queries to prevent SQL injection. ## Redis Caching Patterns Use Redis for session storage, rate limiting, and cache-aside patterns. Set TTLs on cached data to prevent stale reads. Consider Redis Cluster for high availability. Monitor memory usage—Redis holds everything in RAM. ## HubSpot CRM Integration HubSpot offers a REST API and webhooks for real-time sync. Authentication uses private apps (access token) or OAuth for public apps. The CRM API covers contacts, companies, deals, and tickets. Use the Search API for complex queries. Webhook subscriptions require a valid endpoint that responds to verification challenges. ## Xero Accounting Integration Xero uses OAuth 2.0. The API base is https://api.xero.com/api.xro/2.0/. Endpoints include Invoices, Contacts, Payments, and BankTransactions. Connections are tenant-specific—multi-tenant apps must handle organization switching. Rate limits: 60 calls per minute per organization. ## PostgreSQL Best Practices Use connection pooling (PgBouncer) for web applications. Index foreign keys and frequently queried columns. Avoid N+1 queries—use JOINs or batch loading. For large tables, consider partitioning by date. Always use parameterized queries to prevent SQL injection. ## Redis Caching Patterns Use Redis for session storage, rate limiting, and cache-aside patterns. Set TTLs on cached data to prevent stale reads. Consider Redis Cluster for high availability. Monitor memory usage—Redis holds everything in RAM. ## HubSpot CRM Integration HubSpot offers a REST API and webhooks for real-time sync. Authentication uses private apps (access token) or OAuth for public apps. The CRM API covers contacts, companies, deals, and tickets. Use the Search API for complex queries. Webhook subscriptions require a valid endpoint that responds to verification challenges. ## Xero Accounting Integration Xero uses OAuth 2.0. The API base is https://api.xero.com/api.xro/2.0/. Endpoints include Invoices, Contacts, Payments, and BankTransactions. Connections are tenant-specific—multi-tenant apps must handle organization switching. Rate limits: 60 calls per minute per organization. ## PostgreSQL Best Practices Use connection pooling (PgBouncer) for web applications. Index foreign keys and frequently queried columns. Avoid N+1 queries—use JOINs or batch loading. For large tables, consider partitioning by date. Always use parameterized queries to prevent SQL injection. ## Redis Caching Patterns Use Redis for session storage, rate limiting, and cache-aside patterns. Set TTLs on cached data to prevent stale reads. Consider Redis Cluster for high availability. Monitor memory usage—Redis holds everything in RAM. ## HubSpot CRM Integration HubSpot offers a REST API and webhooks for real-time sync. Authentication uses private apps (access token) or OAuth for public apps. The CRM API covers contacts, companies, deals, and tickets. Use the Search API for complex queries. Webhook subscriptions require a valid endpoint that responds to verification challenges. ## Xero Accounting Integration Xero uses OAuth 2.0. The API base is https://api.xero.com/api.xro/2.0/. Endpoints include Invoices, Contacts, Payments, and BankTransactions. Connections are tenant-specific—multi-tenant apps must handle organization switching. Rate limits: 60 calls per minute per organization. ## PostgreSQL Best Practices Use connection pooling (PgBouncer) for web applications. Index foreign keys and frequently queried columns. Avoid N+1 queries—use JOINs or batch loading. For large tables, consider partitioning by date. Always use parameterized queries to prevent SQL injection. ## Redis Caching Patterns Use Redis for session storage, rate limiting, and cache-aside patterns. Set TTLs on cached data to prevent stale reads. Consider Redis Cluster for high availability. Monitor memory usage—Redis holds everything in RAM. ## HubSpot CRM Integration HubSpot offers a REST API and webhooks for real-time sync. Authentication uses private apps (access token) or OAuth for public apps. The CRM API covers contacts, companies, deals, and tickets. Use the Search API for complex queries. Webhook subscriptions require a valid endpoint that responds to verification challenges. ## Xero Accounting Integration Xero uses OAuth 2.0. The API base is https://api.xero.com/api.xro/2.0/. Endpoints include Invoices, Contacts, Payments, and BankTransactions. Connections are tenant-specific—multi-tenant apps must handle organization switching. Rate limits: 60 calls per minute per organization. ## PostgreSQL Best Practices Use connection pooling (PgBouncer) for web applications. Index foreign keys and frequently queried columns. Avoid N+1 queries—use JOINs or batch loading. For large tables, consider partitioning by date. Always use parameterized queries to prevent SQL injection. ## Redis Caching Patterns Use Redis for session storage, rate limiting, and cache-aside patterns. Set TTLs on cached data to prevent stale reads. Consider Redis Cluster for high availability. Monitor memory usage—Redis holds everything in RAM. ## HubSpot CRM Integration HubSpot offers a REST API and webhooks for real-time sync. Authentication uses private apps (access token) or OAuth for public apps. The CRM API covers contacts, companies, deals, and tickets. Use the Search API for complex queries. Webhook subscriptions require a valid endpoint that responds to verification challenges. ## Xero Accounting Integration Xero uses OAuth 2.0. The API base is https://api.xero.com/api.xro/2.0/. Endpoints include Invoices, Contacts, Payments, and BankTransactions. Connections are tenant-specific—multi-tenant apps must handle organization switching. Rate limits: 60 calls per minute per organization. ## PostgreSQL Best Practices Use connection pooling (PgBouncer) for web applications. Index foreign keys and frequently queried columns. Avoid N+1 queries—use JOINs or batch loading. For large tables, consider partitioning by date. Always use parameterized queries to prevent SQL injection. ## Redis Caching Patterns Use Redis for session storage, rate limiting, and cache-aside patterns. Set TTLs on cached data to prevent stale reads. Consider Redis Cluster for high availability. Monitor memory usage—Redis holds everything in RAM. ## HubSpot CRM Integration HubSpot offers a REST API and webhooks for real-time sync. Authentication uses private apps (access token) or OAuth for public apps. The CRM API covers contacts, companies, deals, and tickets. Use the Search API for complex queries. Webhook subscriptions require a valid endpoint that responds to verification challenges. ## Xero Accounting Integration Xero uses OAuth 2.0. The API base is https://api.xero.com/api.xro/2.0/. Endpoints include Invoices, Contacts, Payments, and BankTransactions. Connections are tenant-specific—multi-tenant apps must handle organization switching. Rate limits: 60 calls per minute per organization. ## PostgreSQL Best Practices Use connection pooling (PgBouncer) for web applications. Index foreign keys and frequently queried columns. Avoid N+1 queries—use JOINs or batch loading. For large tables, consider partitioning by date. Always use parameterized queries to prevent SQL injection. ## Redis Caching Patterns Use Redis for session storage, rate limiting, and cache-aside patterns. Set TTLs on cached data to prevent stale reads. Consider Redis Cluster for high availability. Monitor memory usage—Redis holds everything in RAM. ## HubSpot CRM Integration HubSpot offers a REST API and webhooks for real-time sync. Authentication uses private apps (access token) or OAuth for public apps. The CRM API covers contacts, companies, deals, and tickets. Use the Search API for complex queries. Webhook subscriptions require a valid endpoint that responds to verification challenges. ## Xero Accounting Integration Xero uses OAuth 2.0. The API base is https://api.xero.com/api.xro/2.0/. Endpoints include Invoices, Contacts, Payments, and BankTransactions. Connections are tenant-specific—multi-tenant apps must handle organization switching. Rate limits: 60 calls per minute per organization. ## PostgreSQL Best Practices Use connection pooling (PgBouncer) for web applications. Index foreign keys and frequently queried columns. Avoid N+1 queries—use JOINs or batch loading. For large tables, consider partitioning by date. Always use parameterized queries to prevent SQL injection. ## Redis Caching Patterns Use Redis for session storage, rate limiting, and cache-aside patterns. Set TTLs on cached data to prevent stale reads. Consider Redis Cluster for high availability. Monitor memory usage—Redis holds everything in RAM. ## HubSpot CRM Integration HubSpot offers a REST API and webhooks for real-time sync. Authentication uses private apps (access token) or OAuth for public apps. The CRM API covers contacts, companies, deals, and tickets. Use the Search API for complex queries. Webhook subscriptions require a valid endpoint that responds to verification challenges. ## Xero Accounting Integration Xero uses OAuth 2.0. The API base is https://api.xero.com/api.xro/2.0/. Endpoints include Invoices, Contacts, Payments, and BankTransactions. Connections are tenant-specific—multi-tenant apps must handle organization switching. Rate limits: 60 calls per minute per organization. ## PostgreSQL Best Practices Use connection pooling (PgBouncer) for web applications. Index foreign keys and frequently queried columns. Avoid N+1 queries—use JOINs or batch loading. For large tables, consider partitioning by date. Always use parameterized queries to prevent SQL injection. ## Redis Caching Patterns Use Redis for session storage, rate limiting, and cache-aside patterns. Set TTLs on cached data to prevent stale reads. Consider Redis Cluster for high availability. Monitor memory usage—Redis holds everything in RAM. ## HubSpot CRM Integration HubSpot offers a REST API and webhooks for real-time sync. Authentication uses private apps (access token) or OAuth for public apps. The CRM API covers contacts, companies, deals, and tickets. Use the Search API for complex queries. Webhook subscriptions require a valid endpoint that responds to verification challenges. ## Xero Accounting Integration Xero uses OAuth 2.0. The API base is https://api.xero.com/api.xro/2.0/. Endpoints include Invoices, Contacts, Payments, and BankTransactions. Connections are tenant-specific—multi-tenant apps must handle organization switching. Rate limits: 60 calls per minute per organization. ## PostgreSQL Best Practices Use connection pooling (PgBouncer) for web applications. Index foreign keys and frequently queried columns. Avoid N+1 queries—use JOINs or batch loading. For large tables, consider partitioning by date. Always use parameterized queries to prevent SQL injection. ## Redis Caching Patterns Use Redis for session storage, rate limiting, and cache-aside patterns. Set TTLs on cached data to prevent stale reads. Consider Redis Cluster for high availability. Monitor memory usage—Redis holds everything in RAM. ## HubSpot CRM Integration HubSpot offers a REST API and webhooks for real-time sync. Authentication uses private apps (access token) or OAuth for public apps. The CRM API covers contacts, companies, deals, and tickets. Use the Search API for complex queries. Webhook subscriptions require a valid endpoint that responds to verification challenges. ## Xero Accounting Integration Xero uses OAuth 2.0. The API base is https://api.xero.com/api.xro/2.0/. Endpoints include Invoices, Contacts, Payments, and BankTransactions. Connections are tenant-specific—multi-tenant apps must handle organization switching. Rate limits: 60 calls per minute per organization. ## PostgreSQL Best Practices Use connection pooling (PgBouncer) for web applications. Index foreign keys and frequently queried columns. Avoid N+1 queries—use JOINs or batch loading. For large tables, consider partitioning by date. Always use parameterized queries to prevent SQL injection. ## Redis Caching Patterns Use Redis for session storage, rate limiting, and cache-aside patterns. Set TTLs on cached data to prevent stale reads. Consider Redis Cluster for high availability. Monitor memory usage—Redis holds everything in RAM. ## HubSpot CRM Integration HubSpot offers a REST API and webhooks for real-time sync. Authentication uses private apps (access token) or OAuth for public apps. The CRM API covers contacts, companies, deals, and tickets. Use the Search API for complex queries. Webhook subscriptions require a valid endpoint that responds to verification challenges. ## Xero Accounting Integration Xero uses OAuth 2.0. The API base is https://api.xero.com/api.xro/2.0/. Endpoints include Invoices, Contacts, Payments, and BankTransactions. Connections are tenant-specific—multi-tenant apps must handle organization switching. Rate limits: 60 calls per minute per organization. ## PostgreSQL Best Practices Use connection pooling (PgBouncer) for web applications. Index foreign keys and frequently queried columns. Avoid N+1 queries—use JOINs or batch loading. For large tables, consider partitioning by date. Always use parameterized queries to prevent SQL injection. ## Redis Caching Patterns Use Redis for session storage, rate limiting, and cache-aside patterns. Set TTLs on cached data to prevent stale reads. Consider Redis Cluster for high availability. Monitor memory usage—Redis holds everything in RAM. ## HubSpot CRM Integration HubSpot offers a REST API and webhooks for real-time sync. Authentication uses private apps (access token) or OAuth for public apps. The CRM API covers contacts, companies, deals, and tickets. Use the Search API for complex queries. Webhook subscriptions require a valid endpoint that responds to verification challenges. ## Xero Accounting Integration Xero uses OAuth 2.0. The API base is https://api.xero.com/api.xro/2.0/. Endpoints include Invoices, Contacts, Payments, and BankTransactions. Connections are tenant-specific—multi-tenant apps must handle organization switching. Rate limits: 60 calls per minute per organization. ## PostgreSQL Best Practices Use connection pooling (PgBouncer) for web applications. Index foreign keys and frequently queried columns. Avoid N+1 queries—use JOINs or batch loading. For large tables, consider partitioning by date. Always use parameterized queries to prevent SQL injection. ## Redis Caching Patterns Use Redis for session storage, rate limiting, and cache-aside patterns. Set TTLs on cached data to prevent stale reads. Consider Redis Cluster for high availability. Monitor memory usage—Redis holds everything in RAM. ## HubSpot CRM Integration HubSpot offers a REST API and webhooks for real-time sync. Authentication uses private apps (access token) or OAuth for public apps. The CRM API covers contacts, companies, deals, and tickets. Use the Search API for complex queries. Webhook subscriptions require a valid endpoint that responds to verification challenges. ## Xero Accounting Integration Xero uses OAuth 2.0. The API base is https://api.xero.com/api.xro/2.0/. Endpoints include Invoices, Contacts, Payments, and BankTransactions. Connections are tenant-specific—multi-tenant apps must handle organization switching. Rate limits: 60 calls per minute per organization. ## PostgreSQL Best Practices Use connection pooling (PgBouncer) for web applications. Index foreign keys and frequently queried columns. Avoid N+1 queries—use JOINs or batch loading. For large tables, consider partitioning by date. Always use parameterized queries to prevent SQL injection. ## Redis Caching Patterns Use Redis for session storage, rate limiting, and cache-aside patterns. Set TTLs on cached data to prevent stale reads. Consider Redis Cluster for high availability. Monitor memory usage—Redis holds everything in RAM. ## HubSpot CRM Integration HubSpot offers a REST API and webhooks for real-time sync. Authentication uses private apps (access token) or OAuth for public apps. The CRM API covers contacts, companies, deals, and tickets. Use the Search API for complex queries. Webhook subscriptions require a valid endpoint that responds to verification challenges. ## Xero Accounting Integration Xero uses OAuth 2.0. The API base is https://api.xero.com/api.xro/2.0/. Endpoints include Invoices, Contacts, Payments, and BankTransactions. Connections are tenant-specific—multi-tenant apps must handle organization switching. Rate limits: 60 calls per minute per organization. ## PostgreSQL Best Practices Use connection pooling (PgBouncer) for web applications. Index foreign keys and frequently queried columns. Avoid N+1 queries—use JOINs or batch loading. For large tables, consider partitioning by date. Always use parameterized queries to prevent SQL injection. ## Redis Caching Patterns Use Redis for session storage, rate limiting, and cache-aside patterns. Set TTLs on cached data to prevent stale reads. Consider Redis Cluster for high availability. Monitor memory usage—Redis holds everything in RAM. ## HubSpot CRM Integration HubSpot offers a REST API and webhooks for real-time sync. Authentication uses private apps (access token) or OAuth for public apps. The CRM API covers contacts, companies, deals, and tickets. Use the Search API for complex queries. Webhook subscriptions require a valid endpoint that responds to verification challenges. ## Xero Accounting Integration Xero uses OAuth 2.0. The API base is https://api.xero.com/api.xro/2.0/. Endpoints include Invoices, Contacts, Payments, and BankTransactions. Connections are tenant-specific—multi-tenant apps must handle organization switching. Rate limits: 60 calls per minute per organization. ## PostgreSQL Best Practices Use connection pooling (PgBouncer) for web applications. Index foreign keys and frequently queried columns. Avoid N+1 queries—use JOINs or batch loading. For large tables, consider partitioning by date. Always use parameterized queries to prevent SQL injection. ## Redis Caching Patterns Use Redis for session storage, rate limiting, and cache-aside patterns. Set TTLs on cached data to prevent stale reads. Consider Redis Cluster for high availability. Monitor memory usage—Redis holds everything in RAM. ## HubSpot CRM Integration HubSpot offers a REST API and webhooks for real-time sync. Authentication uses private apps (access token) or OAuth for public apps. The CRM API covers contacts, companies, deals, and tickets. Use the Search API for complex queries. Webhook subscriptions require a valid endpoint that responds to verification challenges. ## Xero Accounting Integration Xero uses OAuth 2.0. The API base is https://api.xero.com/api.xro/2.0/. Endpoints include Invoices, Contacts, Payments, and BankTransactions. Connections are tenant-specific—multi-tenant apps must handle organization switching. Rate limits: 60 calls per minute per organization. ## PostgreSQL Best Practices Use connection pooling (PgBouncer) for web applications. Index foreign keys and frequently queried columns. Avoid N+1 queries—use JOINs or batch loading. For large tables, consider partitioning by date. Always use parameterized queries to prevent SQL injection. ## Redis Caching Patterns Use Redis for session storage, rate limiting, and cache-aside patterns. Set TTLs on cached data to prevent stale reads. Consider Redis Cluster for high availability. Monitor memory usage—Redis holds everything in RAM. ## HubSpot CRM Integration HubSpot offers a REST API and webhooks for real-time sync. Authentication uses private apps (access token) or OAuth for public apps. The CRM API covers contacts, companies, deals, and tickets. Use the Search API for complex queries. Webhook subscriptions require a valid endpoint that responds to verification challenges. ## Xero Accounting Integration Xero uses OAuth 2.0. The API base is https://api.xero.com/api.xro/2.0/. Endpoints include Invoices, Contacts, Payments, and BankTransactions. Connections are tenant-specific—multi-tenant apps must handle organization switching. Rate limits: 60 calls per minute per organization. ## PostgreSQL Best Practices Use connection pooling (PgBouncer) for web applications. Index foreign keys and frequently queried columns. Avoid N+1 queries—use JOINs or batch loading. For large tables, consider partitioning by date. Always use parameterized queries to prevent SQL injection. ## Redis Caching Patterns Use Redis for session storage, rate limiting, and cache-aside patterns. Set TTLs on cached data to prevent stale reads. Consider Redis Cluster for high availability. Monitor memory usage—Redis holds everything in RAM. ## HubSpot CRM Integration HubSpot offers a REST API and webhooks for real-time sync. Authentication uses private apps (access token) or OAuth for public apps. The CRM API covers contacts, companies, deals, and tickets. Use the Search API for complex queries. Webhook subscriptions require a valid endpoint that responds to verification challenges. ## Xero Accounting Integration Xero uses OAuth 2.0. The API base is https://api.xero.com/api.xro/2.0/. Endpoints include Invoices, Contacts, Payments, and BankTransactions. Connections are tenant-specific—multi-tenant apps must handle organization switching. Rate limits: 60 calls per minute per organization. ## PostgreSQL Best Practices Use connection pooling (PgBouncer) for web applications. Index foreign keys and frequently queried columns. Avoid N+1 queries—use JOINs or batch loading. For large tables, consider partitioning by date. Always use parameterized queries to prevent SQL injection. ## Redis Caching Patterns Use Redis for session storage, rate limiting, and cache-aside patterns. Set TTLs on cached data to prevent stale reads. Consider Redis Cluster for high availability. Monitor memory usage—Redis holds everything in RAM. ## HubSpot CRM Integration HubSpot offers a REST API and webhooks for real-time sync. Authentication uses private apps (access token) or OAuth for public apps. The CRM API covers contacts, companies, deals, and tickets. Use the Search API for complex queries. Webhook subscriptions require a valid endpoint that responds to verification challenges. ## Xero Accounting Integration Xero uses OAuth 2.0. The API base is https://api.xero.com/api.xro/2.0/. Endpoints include Invoices, Contacts, Payments, and BankTransactions. Connections are tenant-specific—multi-tenant apps must handle organization switching. Rate limits: 60 calls per minute per organization. ## PostgreSQL Best Practices Use connection pooling (PgBouncer) for web applications. Index foreign keys and frequently queried columns. Avoid N+1 queries—use JOINs or batch loading. For large tables, consider partitioning by date. Always use parameterized queries to prevent SQL injection. ## Redis Caching Patterns Use Redis for session storage, rate limiting, and cache-aside patterns. Set TTLs on cached data to prevent stale reads. Consider Redis Cluster for high availability. Monitor memory usage—Redis holds everything in RAM. ## HubSpot CRM Integration HubSpot offers a REST API and webhooks for real-time sync. Authentication uses private apps (access token) or OAuth for public apps. The CRM API covers contacts, companies, deals, and tickets. Use the Search API for complex queries. Webhook subscriptions require a valid endpoint that responds to verification challenges. ## Xero Accounting Integration Xero uses OAuth 2.0. The API base is https://api.xero.com/api.xro/2.0/. Endpoints include Invoices, Contacts, Payments, and BankTransactions. Connections are tenant-specific—multi-tenant apps must handle organization switching. Rate limits: 60 calls per minute per organization. ## PostgreSQL Best Practices Use connection pooling (PgBouncer) for web applications. Index foreign keys and frequently queried columns. Avoid N+1 queries—use JOINs or batch loading. For large tables, consider partitioning by date. Always use parameterized queries to prevent SQL injection. ## Redis Caching Patterns Use Redis for session storage, rate limiting, and cache-aside patterns. Set TTLs on cached data to prevent stale reads. Consider Redis Cluster for high availability. Monitor memory usage—Redis holds everything in RAM. ## HubSpot CRM Integration HubSpot offers a REST API and webhooks for real-time sync. Authentication uses private apps (access token) or OAuth for public apps. The CRM API covers contacts, companies, deals, and tickets. Use the Search API for complex queries. Webhook subscriptions require a valid endpoint that responds to verification challenges. ## Xero Accounting Integration Xero uses OAuth 2.0. The API base is https://api.xero.com/api.xro/2.0/. Endpoints include Invoices, Contacts, Payments, and BankTransactions. Connections are tenant-specific—multi-tenant apps must handle organization switching. Rate limits: 60 calls per minute per organization. ## PostgreSQL Best Practices Use connection pooling (PgBouncer) for web applications. Index foreign keys and frequently queried columns. Avoid N+1 queries—use JOINs or batch loading. For large tables, consider partitioning by date. Always use parameterized queries to prevent SQL injection. ## Redis Caching Patterns Use Redis for session storage, rate limiting, and cache-aside patterns. Set TTLs on cached data to prevent stale reads. Consider Redis Cluster for high availability. Monitor memory usage—Redis holds everything in RAM. ## HubSpot CRM Integration HubSpot offers a REST API and webhooks for real-time sync. Authentication uses private apps (access token) or OAuth for public apps. The CRM API covers contacts, companies, deals, and tickets. Use the Search API for complex queries. Webhook subscriptions require a valid endpoint that responds to verification challenges. ## Xero Accounting Integration Xero uses OAuth 2.0. The API base is https://api.xero.com/api.xro/2.0/. Endpoints include Invoices, Contacts, Payments, and BankTransactions. Connections are tenant-specific—multi-tenant apps must handle organization switching. Rate limits: 60 calls per minute per organization. ## PostgreSQL Best Practices Use connection pooling (PgBouncer) for web applications. Index foreign keys and frequently queried columns. Avoid N+1 queries—use JOINs or batch loading. For large tables, consider partitioning by date. Always use parameterized queries to prevent SQL injection. ## Redis Caching Patterns Use Redis for session storage, rate limiting, and cache-aside patterns. Set TTLs on cached data to prevent stale reads. Consider Redis Cluster for high availability. Monitor memory usage—Redis holds everything in RAM. ## HubSpot CRM Integration HubSpot offers a REST API and webhooks for real-time sync. Authentication uses private apps (access token) or OAuth for public apps. The CRM API covers contacts, companies, deals, and tickets. Use the Search API for complex queries. Webhook subscriptions require a valid endpoint that responds to verification challenges. ## Xero Accounting Integration Xero uses OAuth 2.0. The API base is https://api.xero.com/api.xro/2.0/. Endpoints include Invoices, Contacts, Payments, and BankTransactions. Connections are tenant-specific—multi-tenant apps must handle organization switching. Rate limits: 60 calls per minute per organization. ## PostgreSQL Best Practices Use connection pooling (PgBouncer) for web applications. Index foreign keys and frequently queried columns. Avoid N+1 queries—use JOINs or batch loading. For large tables, consider partitioning by date. Always use parameterized queries to prevent SQL injection. ## Redis Caching Patterns Use Redis for session storage, rate limiting, and cache-aside patterns. Set TTLs on cached data to prevent stale reads. Consider Redis Cluster for high availability. Monitor memory usage—Redis holds everything in RAM. ## HubSpot CRM Integration HubSpot offers a REST API and webhooks for real-time sync. Authentication uses private apps (access token) or OAuth for public apps. The CRM API covers contacts, companies, deals, and tickets. Use the Search API for complex queries. Webhook subscriptions require a valid endpoint that responds to verification challenges. ## Xero Accounting Integration Xero uses OAuth 2.0. The API base is https://api.xero.com/api.xro/2.0/. Endpoints include Invoices, Contacts, Payments, and BankTransactions. Connections are tenant-specific—multi-tenant apps must handle organization switching. Rate limits: 60 calls per minute per organization. ## PostgreSQL Best Practices Use connection pooling (PgBouncer) for web applications. Index foreign keys and frequently queried columns. Avoid N+1 queries—use JOINs or batch loading. For large tables, consider partitioning by date. Always use parameterized queries to prevent SQL injection. ## Redis Caching Patterns Use Redis for session storage, rate limiting, and cache-aside patterns. Set TTLs on cached data to prevent stale reads. Consider Redis Cluster for high availability. Monitor memory usage—Redis holds everything in RAM. ## HubSpot CRM Integration HubSpot offers a REST API and webhooks for real-time sync. Authentication uses private apps (access token) or OAuth for public apps. The CRM API covers contacts, companies, deals, and tickets. Use the Search API for complex queries. Webhook subscriptions require a valid endpoint that responds to verification challenges. ## Xero Accounting Integration Xero uses OAuth 2.0. The API base is https://api.xero.com/api.xro/2.0/. Endpoints include Invoices, Contacts, Payments, and BankTransactions. Connections are tenant-specific—multi-tenant apps must handle organization switching. Rate limits: 60 calls per minute per organization. ## PostgreSQL Best Practices Use connection pooling (PgBouncer) for web applications. Index foreign keys and frequently queried columns. Avoid N+1 queries—use JOINs or batch loading. For large tables, consider partitioning by date. Always use parameterized queries to prevent SQL injection. ## Redis Caching Patterns Use Redis for session storage, rate limiting, and cache-aside patterns. Set TTLs on cached data to prevent stale reads. Consider Redis Cluster for high availability. Monitor memory usage—Redis holds everything in RAM. ## HubSpot CRM Integration HubSpot offers a REST API and webhooks for real-time sync. Authentication uses private apps (access token) or OAuth for public apps. The CRM API covers contacts, companies, deals, and tickets. Use the Search API for complex queries. Webhook subscriptions require a valid endpoint that responds to verification challenges. ## Xero Accounting Integration Xero uses OAuth 2.0. The API base is https://api.xero.com/api.xro/2.0/. Endpoints include Invoices, Contacts, Payments, and BankTransactions. Connections are tenant-specific—multi-tenant apps must handle organization switching. Rate limits: 60 calls per minute per organization. ## PostgreSQL Best Practices Use connection pooling (PgBouncer) for web applications. Index foreign keys and frequently queried columns. Avoid N+1 queries—use JOINs or batch loading. For large tables, consider partitioning by date. Always use parameterized queries to prevent SQL injection. ## Redis Caching Patterns Use Redis for session storage, rate limiting, and cache-aside patterns. Set TTLs on cached data to prevent stale reads. Consider Redis Cluster for high availability. Monitor memory usage—Redis holds everything in RAM. ## HubSpot CRM Integration HubSpot offers a REST API and webhooks for real-time sync. Authentication uses private apps (access token) or OAuth for public apps. The CRM API covers contacts, companies, deals, and tickets. Use the Search API for complex queries. Webhook subscriptions require a valid endpoint that responds to verification challenges. ## Xero Accounting Integration Xero uses OAuth 2.0. The API base is https://api.xero.com/api.xro/2.0/. Endpoints include Invoices, Contacts, Payments, and BankTransactions. Connections are tenant-specific—multi-tenant apps must handle organization switching. Rate limits: 60 calls per minute per organization. ## PostgreSQL Best Practices Use connection pooling (PgBouncer) for web applications. Index foreign keys and frequently queried columns. Avoid N+1 queries—use JOINs or batch loading. For large tables, consider partitioning by date. Always use parameterized queries to prevent SQL injection. ## Redis Caching Patterns Use Redis for session storage, rate limiting, and cache-aside patterns. Set TTLs on cached data to prevent stale reads. Consider Redis Cluster for high availability. Monitor memory usage—Redis holds everything in RAM. ## HubSpot CRM Integration HubSpot offers a REST API and webhooks for real-time sync. Authentication uses private apps (access token) or OAuth for public apps. The CRM API covers contacts, companies, deals, and tickets. Use the Search API for complex queries. Webhook subscriptions require a valid endpoint that responds to verification challenges. ## Xero Accounting Integration Xero uses OAuth 2.0. The API base is https://api.xero.com/api.xro/2.0/. Endpoints include Invoices, Contacts, Payments, and BankTransactions. Connections are tenant-specific—multi-tenant apps must handle organization switching. Rate limits: 60 calls per minute per organization. ## PostgreSQL Best Practices Use connection pooling (PgBouncer) for web applications. Index foreign keys and frequently queried columns. Avoid N+1 queries—use JOINs or batch loading. For large tables, consider partitioning by date. Always use parameterized queries to prevent SQL injection. ## Redis Caching Patterns Use Redis for session storage, rate limiting, and cache-aside patterns. Set TTLs on cached data to prevent stale reads. Consider Redis Cluster for high availability. Monitor memory usage—Redis holds everything in RAM. ## HubSpot CRM Integration HubSpot offers a REST API and webhooks for real-time sync. Authentication uses private apps (access token) or OAuth for public apps. The CRM API covers contacts, companies, deals, and tickets. Use the Search API for complex queries. Webhook subscriptions require a valid endpoint that responds to verification challenges. ## Xero Accounting Integration Xero uses OAuth 2.0. The API base is https://api.xero.com/api.xro/2.0/. Endpoints include Invoices, Contacts, Payments, and BankTransactions. Connections are tenant-specific—multi-tenant apps must handle organization switching. Rate limits: 60 calls per minute per organization. ## PostgreSQL Best Practices Use connection pooling (PgBouncer) for web applications. Index foreign keys and frequently queried columns. Avoid N+1 queries—use JOINs or batch loading. For large tables, consider partitioning by date. Always use parameterized queries to prevent SQL injection. ## Redis Caching Patterns Use Redis for session storage, rate limiting, and cache-aside patterns. Set TTLs on cached data to prevent stale reads. Consider Redis Cluster for high availability. Monitor memory usage—Redis holds everything in RAM. ## HubSpot CRM Integration HubSpot offers a REST API and webhooks for real-time sync. Authentication uses private apps (access token) or OAuth for public apps. The CRM API covers contacts, companies, deals, and tickets. Use the Search API for complex queries. Webhook subscriptions require a valid endpoint that responds to verification challenges. ## Xero Accounting Integration Xero uses OAuth 2.0. The API base is https://api.xero.com/api.xro/2.0/. Endpoints include Invoices, Contacts, Payments, and BankTransactions. Connections are tenant-specific—multi-tenant apps must handle organization switching. Rate limits: 60 calls per minute per organization. ## PostgreSQL Best Practices Use connection pooling (PgBouncer) for web applications. Index foreign keys and frequently queried columns. Avoid N+1 queries—use JOINs or batch loading. For large tables, consider partitioning by date. Always use parameterized queries to prevent SQL injection. ## Redis Caching Patterns Use Redis for session storage, rate limiting, and cache-aside patterns. Set TTLs on cached data to prevent stale reads. Consider Redis Cluster for high availability. Monitor memory usage—Redis holds everything in RAM. ## HubSpot CRM Integration HubSpot offers a REST API and webhooks for real-time sync. Authentication uses private apps (access token) or OAuth for public apps. The CRM API covers contacts, companies, deals, and tickets. Use the Search API for complex queries. Webhook subscriptions require a valid endpoint that responds to verification challenges. ## Xero Accounting Integration Xero uses OAuth 2.0. The API base is https://api.xero.com/api.xro/2.0/. Endpoints include Invoices, Contacts, Payments, and BankTransactions. Connections are tenant-specific—multi-tenant apps must handle organization switching. Rate limits: 60 calls per minute per organization. ## PostgreSQL Best Practices Use connection pooling (PgBouncer) for web applications. Index foreign keys and frequently queried columns. Avoid N+1 queries—use JOINs or batch loading. For large tables, consider partitioning by date. Always use parameterized queries to prevent SQL injection. ## Redis Caching Patterns Use Redis for session storage, rate limiting, and cache-aside patterns. Set TTLs on cached data to prevent stale reads. Consider Redis Cluster for high availability. Monitor memory usage—Redis holds everything in RAM. ## HubSpot CRM Integration HubSpot offers a REST API and webhooks for real-time sync. Authentication uses private apps (access token) or OAuth for public apps. The CRM API covers contacts, companies, deals, and tickets. Use the Search API for complex queries. Webhook subscriptions require a valid endpoint that responds to verification challenges. ## Xero Accounting Integration Xero uses OAuth 2.0. The API base is https://api.xero.com/api.xro/2.0/. Endpoints include Invoices, Contacts, Payments, and BankTransactions. Connections are tenant-specific—multi-tenant apps must handle organization switching. Rate limits: 60 calls per minute per organization. ## PostgreSQL Best Practices Use connection pooling (PgBouncer) for web applications. Index foreign keys and frequently queried columns. Avoid N+1 queries—use JOINs or batch loading. For large tables, consider partitioning by date. Always use parameterized queries to prevent SQL injection. ## Redis Caching Patterns Use Redis for session storage, rate limiting, and cache-aside patterns. Set TTLs on cached data to prevent stale reads. Consider Redis Cluster for high availability. Monitor memory usage—Redis holds everything in RAM. ## HubSpot CRM Integration HubSpot offers a REST API and webhooks for real-time sync. Authentication uses private apps (access token) or OAuth for public apps. The CRM API covers contacts, companies, deals, and tickets. Use the Search API for complex queries. Webhook subscriptions require a valid endpoint that responds to verification challenges. ## Xero Accounting Integration Xero uses OAuth 2.0. The API base is https://api.xero.com/api.xro/2.0/. Endpoints include Invoices, Contacts, Payments, and BankTransactions. Connections are tenant-specific—multi-tenant apps must handle organization switching. Rate limits: 60 calls per minute per organization. ## PostgreSQL Best Practices Use connection pooling (PgBouncer) for web applications. Index foreign keys and frequently queried columns. Avoid N+1 queries—use JOINs or batch loading. For large tables, consider partitioning by date. Always use parameterized queries to prevent SQL injection. ## Redis Caching Patterns Use Redis for session storage, rate limiting, and cache-aside patterns. Set TTLs on cached data to prevent stale reads. Consider Redis Cluster for high availability. Monitor memory usage—Redis holds everything in RAM. ## HubSpot CRM Integration HubSpot offers a REST API and webhooks for real-time sync. Authentication uses private apps (access token) or OAuth for public apps. The CRM API covers contacts, companies, deals, and tickets. Use the Search API for complex queries. Webhook subscriptions require a valid endpoint that responds to verification challenges. ## Xero Accounting Integration Xero uses OAuth 2.0. The API base is https://api.xero.com/api.xro/2.0/. Endpoints include Invoices, Contacts, Payments, and BankTransactions. Connections are tenant-specific—multi-tenant apps must handle organization switching. Rate limits: 60 calls per minute per organization. ## PostgreSQL Best Practices Use connection pooling (PgBouncer) for web applications. Index foreign keys and frequently queried columns. Avoid N+1 queries—use JOINs or batch loading. For large tables, consider partitioning by date. Always use parameterized queries to prevent SQL injection. ## Redis Caching Patterns Use Redis for session storage, rate limiting, and cache-aside patterns. Set TTLs on cached data to prevent stale reads. Consider Redis Cluster for high availability. Monitor memory usage—Redis holds everything in RAM. ## HubSpot CRM Integration HubSpot offers a REST API and webhooks for real-time sync. Authentication uses private apps (access token) or OAuth for public apps. The CRM API covers contacts, companies, deals, and tickets. Use the Search API for complex queries. Webhook subscriptions require a valid endpoint that responds to verification challenges. ## Xero Accounting Integration Xero uses OAuth 2.0. The API base is https://api.xero.com/api.xro/2.0/. Endpoints include Invoices, Contacts, Payments, and BankTransactions. Connections are tenant-specific—multi-tenant apps must handle organization switching. Rate limits: 60 calls per minute per organization. ## PostgreSQL Best Practices Use connection pooling (PgBouncer) for web applications. Index foreign keys and frequently queried columns. Avoid N+1 queries—use JOINs or batch loading. For large tables, consider partitioning by date. Always use parameterized queries to prevent SQL injection. ## Redis Caching Patterns Use Redis for session storage, rate limiting, and cache-aside patterns. Set TTLs on cached data to prevent stale reads. Consider Redis Cluster for high availability. Monitor memory usage—Redis holds everything in RAM. ## HubSpot CRM Integration HubSpot offers a REST API and webhooks for real-time sync. Authentication uses private apps (access token) or OAuth for public apps. The CRM API covers contacts, companies, deals, and tickets. Use the Search API for complex queries. Webhook subscriptions require a valid endpoint that responds to verification challenges. ## Xero Accounting Integration Xero uses OAuth 2.0. The API base is https://api.xero.com/api.xro/2.0/. Endpoints include Invoices, Contacts, Payments, and BankTransactions. Connections are tenant-specific—multi-tenant apps must handle organization switching. Rate limits: 60 calls per minute per organization. ## PostgreSQL Best Practices Use connection pooling (PgBouncer) for web applications. Index foreign keys and frequently queried columns. Avoid N+1 queries—use JOINs or batch loading. For large tables, consider partitioning by date. Always use parameterized queries to prevent SQL injection. ## Redis Caching Patterns Use Redis for session storage, rate limiting, and cache-aside patterns. Set TTLs on cached data to prevent stale reads. Consider Redis Cluster for high availability. Monitor memory usage—Redis holds everything in RAM. ## HubSpot CRM Integration HubSpot offers a REST API and webhooks for real-time sync. Authentication uses private apps (access token) or OAuth for public apps. The CRM API covers contacts, companies, deals, and tickets. Use the Search API for complex queries. Webhook subscriptions require a valid endpoint that responds to verification challenges. ## Xero Accounting Integration Xero uses OAuth 2.0. The API base is https://api.xero.com/api.xro/2.0/. Endpoints include Invoices, Contacts, Payments, and BankTransactions. Connections are tenant-specific—multi-tenant apps must handle organization switching. Rate limits: 60 calls per minute per organization. ## PostgreSQL Best Practices Use connection pooling (PgBouncer) for web applications. Index foreign keys and frequently queried columns. Avoid N+1 queries—use JOINs or batch loading. For large tables, consider partitioning by date. Always use parameterized queries to prevent SQL injection. ## Redis Caching Patterns Use Redis for session storage, rate limiting, and cache-aside patterns. Set TTLs on cached data to prevent stale reads. Consider Redis Cluster for high availability. Monitor memory usage—Redis holds everything in RAM. ## HubSpot CRM Integration HubSpot offers a REST API and webhooks for real-time sync. Authentication uses private apps (access token) or OAuth for public apps. The CRM API covers contacts, companies, deals, and tickets. Use the Search API for complex queries. Webhook subscriptions require a valid endpoint that responds to verification challenges. ## Xero Accounting Integration Xero uses OAuth 2.0. The API base is https://api.xero.com/api.xro/2.0/. Endpoints include Invoices, Contacts, Payments, and BankTransactions. Connections are tenant-specific—multi-tenant apps must handle organization switching. Rate limits: 60 calls per minute per organization. ## PostgreSQL Best Practices Use connection pooling (PgBouncer) for web applications. Index foreign keys and frequently queried columns. Avoid N+1 queries—use JOINs or batch loading. For large tables, consider partitioning by date. Always use parameterized queries to prevent SQL injection. ## Redis Caching Patterns Use Redis for session storage, rate limiting, and cache-aside patterns. Set TTLs on cached data to prevent stale reads. Consider Redis Cluster for high availability. Monitor memory usage—Redis holds everything in RAM. ## HubSpot CRM Integration HubSpot offers a REST API and webhooks for real-time sync. Authentication uses private apps (access token) or OAuth for public apps. The CRM API covers contacts, companies, deals, and tickets. Use the Search API for complex queries. Webhook subscriptions require a valid endpoint that responds to verification challenges. ## Xero Accounting Integration Xero uses OAuth 2.0. The API base is https://api.xero.com/api.xro/2.0/. Endpoints include Invoices, Contacts, Payments, and BankTransactions. Connections are tenant-specific—multi-tenant apps must handle organization switching. Rate limits: 60 calls per minute per organization. ## PostgreSQL Best Practices Use connection pooling (PgBouncer) for web applications. Index foreign keys and frequently queried columns. Avoid N+1 queries—use JOINs or batch loading. For large tables, consider partitioning by date. Always use parameterized queries to prevent SQL injection. ## Redis Caching Patterns Use Redis for session storage, rate limiting, and cache-aside patterns. Set TTLs on cached data to prevent stale reads. Consider Redis Cluster for high availability. Monitor memory usage—Redis holds everything in RAM. ## HubSpot CRM Integration HubSpot offers a REST API and webhooks for real-time sync. Authentication uses private apps (access token) or OAuth for public apps. The CRM API covers contacts, companies, deals, and tickets. Use the Search API for complex queries. Webhook subscriptions require a valid endpoint that responds to verification challenges. ## Xero Accounting Integration Xero uses OAuth 2.0. The API base is https://api.xero.com/api.xro/2.0/. Endpoints include Invoices, Contacts, Payments, and BankTransactions. Connections are tenant-specific—multi-tenant apps must handle organization switching. Rate limits: 60 calls per minute per organization. ## PostgreSQL Best Practices Use connection pooling (PgBouncer) for web applications. Index foreign keys and frequently queried columns. Avoid N+1 queries—use JOINs or batch loading. For large tables, consider partitioning by date. Always use parameterized queries to prevent SQL injection. ## Redis Caching Patterns Use Redis for session storage, rate limiting, and cache-aside patterns. Set TTLs on cached data to prevent stale reads. Consider Redis Cluster for high availability. Monitor memory usage—Redis holds everything in RAM. ## HubSpot CRM Integration HubSpot offers a REST API and webhooks for real-time sync. Authentication uses private apps (access token) or OAuth for public apps. The CRM API covers contacts, companies, deals, and tickets. Use the Search API for complex queries. Webhook subscriptions require a valid endpoint that responds to verification challenges. ## Xero Accounting Integration Xero uses OAuth 2.0. The API base is https://api.xero.com/api.xro/2.0/. Endpoints include Invoices, Contacts, Payments, and BankTransactions. Connections are tenant-specific—multi-tenant apps must handle organization switching. Rate limits: 60 calls per minute per organization. ## PostgreSQL Best Practices Use connection pooling (PgBouncer) for web applications. Index foreign keys and frequently queried columns. Avoid N+1 queries—use JOINs or batch loading. For large tables, consider partitioning by date. Always use parameterized queries to prevent SQL injection. ## Redis Caching Patterns Use Redis for session storage, rate limiting, and cache-aside patterns. Set TTLs on cached data to prevent stale reads. Consider Redis Cluster for high availability. Monitor memory usage—Redis holds everything in RAM. ## HubSpot CRM Integration HubSpot offers a REST API and webhooks for real-time sync. Authentication uses private apps (access token) or OAuth for public apps. The CRM API covers contacts, companies, deals, and tickets. Use the Search API for complex queries. Webhook subscriptions require a valid endpoint that responds to verification challenges. ## Xero Accounting Integration Xero uses OAuth 2.0. The API base is https://api.xero.com/api.xro/2.0/. Endpoints include Invoices, Contacts, Payments, and BankTransactions. Connections are tenant-specific—multi-tenant apps must handle organization switching. Rate limits: 60 calls per minute per organization. ## PostgreSQL Best Practices Use connection pooling (PgBouncer) for web applications. Index foreign keys and frequently queried columns. Avoid N+1 queries—use JOINs or batch loading. For large tables, consider partitioning by date. Always use parameterized queries to prevent SQL injection. ## Redis Caching Patterns Use Redis for session storage, rate limiting, and cache-aside patterns. Set TTLs on cached data to prevent stale reads. Consider Redis Cluster for high availability. Monitor memory usage—Redis holds everything in RAM. ## HubSpot CRM Integration HubSpot offers a REST API and webhooks for real-time sync. Authentication uses private apps (access token) or OAuth for public apps. The CRM API covers contacts, companies, deals, and tickets. Use the Search API for complex queries. Webhook subscriptions require a valid endpoint that responds to verification challenges. ## Xero Accounting Integration Xero uses OAuth 2.0. The API base is https://api.xero.com/api.xro/2.0/. Endpoints include Invoices, Contacts, Payments, and BankTransactions. Connections are tenant-specific—multi-tenant apps must handle organization switching. Rate limits: 60 calls per minute per organization. ## PostgreSQL Best Practices Use connection pooling (PgBouncer) for web applications. Index foreign keys and frequently queried columns. Avoid N+1 queries—use JOINs or batch loading. For large tables, consider partitioning by date. Always use parameterized queries to prevent SQL injection. ## Redis Caching Patterns Use Redis for session storage, rate limiting, and cache-aside patterns. Set TTLs on cached data to prevent stale reads. Consider Redis Cluster for high availability. Monitor memory usage—Redis holds everything in RAM. ## HubSpot CRM Integration HubSpot offers a REST API and webhooks for real-time sync. Authentication uses private apps (access token) or OAuth for public apps. The CRM API covers contacts, companies, deals, and tickets. Use the Search API for complex queries. Webhook subscriptions require a valid endpoint that responds to verification challenges. ## Xero Accounting Integration Xero uses OAuth 2.0. The API base is https://api.xero.com/api.xro/2.0/. Endpoints include Invoices, Contacts, Payments, and BankTransactions. Connections are tenant-specific—multi-tenant apps must handle organization switching. Rate limits: 60 calls per minute per organization. ## PostgreSQL Best Practices Use connection pooling (PgBouncer) for web applications. Index foreign keys and frequently queried columns. Avoid N+1 queries—use JOINs or batch loading. For large tables, consider partitioning by date. Always use parameterized queries to prevent SQL injection. ## Redis Caching Patterns Use Redis for session storage, rate limiting, and cache-aside patterns. Set TTLs on cached data to prevent stale reads. Consider Redis Cluster for high availability. Monitor memory usage—Redis holds everything in RAM. ## HubSpot CRM Integration HubSpot offers a REST API and webhooks for real-time sync. Authentication uses private apps (access token) or OAuth for public apps. The CRM API covers contacts, companies, deals, and tickets. Use the Search API for complex queries. Webhook subscriptions require a valid endpoint that responds to verification challenges. ## Xero Accounting Integration Xero uses OAuth 2.0. The API base is https://api.xero.com/api.xro/2.0/. Endpoints include Invoices, Contacts, Payments, and BankTransactions. Connections are tenant-specific—multi-tenant apps must handle organization switching. Rate limits: 60 calls per minute per organization. ## PostgreSQL Best Practices Use connection pooling (PgBouncer) for web applications. Index foreign keys and frequently queried columns. Avoid N+1 queries—use JOINs or batch loading. For large tables, consider partitioning by date. Always use parameterized queries to prevent SQL injection. ## Redis Caching Patterns Use Redis for session storage, rate limiting, and cache-aside patterns. Set TTLs on cached data to prevent stale reads. Consider Redis Cluster for high availability. Monitor memory usage—Redis holds everything in RAM. ## HubSpot CRM Integration HubSpot offers a REST API and webhooks for real-time sync. Authentication uses private apps (access token) or OAuth for public apps. The CRM API covers contacts, companies, deals, and tickets. Use the Search API for complex queries. Webhook subscriptions require a valid endpoint that responds to verification challenges. ## Xero Accounting Integration Xero uses OAuth 2.0. The API base is https://api.xero.com/api.xro/2.0/. Endpoints include Invoices, Contacts, Payments, and BankTransactions. Connections are tenant-specific—multi-tenant apps must handle organization switching. Rate limits: 60 calls per minute per organization. ## PostgreSQL Best Practices Use connection pooling (PgBouncer) for web applications. Index foreign keys and frequently queried columns. Avoid N+1 queries—use JOINs or batch loading. For large tables, consider partitioning by date. Always use parameterized queries to prevent SQL injection. ## Redis Caching Patterns Use Redis for session storage, rate limiting, and cache-aside patterns. Set TTLs on cached data to prevent stale reads. Consider Redis Cluster for high availability. Monitor memory usage—Redis holds everything in RAM. ## HubSpot CRM Integration HubSpot offers a REST API and webhooks for real-time sync. Authentication uses private apps (access token) or OAuth for public apps. The CRM API covers contacts, companies, deals, and tickets. Use the Search API for complex queries. Webhook subscriptions require a valid endpoint that responds to verification challenges. ## Xero Accounting Integration Xero uses OAuth 2.0. The API base is https://api.xero.com/api.xro/2.0/. Endpoints include Invoices, Contacts, Payments, and BankTransactions. Connections are tenant-specific—multi-tenant apps must handle organization switching. Rate limits: 60 calls per minute per organization. ## PostgreSQL Best Practices Use connection pooling (PgBouncer) for web applications. Index foreign keys and frequently queried columns. Avoid N+1 queries—use JOINs or batch loading. For large tables, consider partitioning by date. Always use parameterized queries to prevent SQL injection. ## Redis Caching Patterns Use Redis for session storage, rate limiting, and cache-aside patterns. Set TTLs on cached data to prevent stale reads. Consider Redis Cluster for high availability. Monitor memory usage—Redis holds everything in RAM. ## HubSpot CRM Integration HubSpot offers a REST API and webhooks for real-time sync. Authentication uses private apps (access token) or OAuth for public apps. The CRM API covers contacts, companies, deals, and tickets. Use the Search API for complex queries. Webhook subscriptions require a valid endpoint that responds to verification challenges. ## Xero Accounting Integration Xero uses OAuth 2.0. The API base is https://api.xero.com/api.xro/2.0/. Endpoints include Invoices, Contacts, Payments, and BankTransactions. Connections are tenant-specific—multi-tenant apps must handle organization switching. Rate limits: 60 calls per minute per organization. ## PostgreSQL Best Practices Use connection pooling (PgBouncer) for web applications. Index foreign keys and frequently queried columns. Avoid N+1 queries—use JOINs or batch loading. For large tables, consider partitioning by date. Always use parameterized queries to prevent SQL injection. ## Redis Caching Patterns Use Redis for session storage, rate limiting, and cache-aside patterns. Set TTLs on cached data to prevent stale reads. Consider Redis Cluster for high availability. Monitor memory usage—Redis holds everything in RAM. ## HubSpot CRM Integration HubSpot offers a REST API and webhooks for real-time sync. Authentication uses private apps (access token) or OAuth for public apps. The CRM API covers contacts, companies, deals, and tickets. Use the Search API for complex queries. Webhook subscriptions require a valid endpoint that responds to verification challenges. ## Xero Accounting Integration Xero uses OAuth 2.0. The API base is https://api.xero.com/api.xro/2.0/. Endpoints include Invoices, Contacts, Payments, and BankTransactions. Connections are tenant-specific—multi-tenant apps must handle organization switching. Rate limits: 60 calls per minute per organization. ## PostgreSQL Best Practices Use connection pooling (PgBouncer) for web applications. Index foreign keys and frequently queried columns. Avoid N+1 queries—use JOINs or batch loading. For large tables, consider partitioning by date. Always use parameterized queries to prevent SQL injection. ## Redis Caching Patterns Use Redis for session storage, rate limiting, and cache-aside patterns. Set TTLs on cached data to prevent stale reads. Consider Redis Cluster for high availability. Monitor memory usage—Redis holds everything in RAM. ## HubSpot CRM Integration HubSpot offers a REST API and webhooks for real-time sync. Authentication uses private apps (access token) or OAuth for public apps. The CRM API covers contacts, companies, deals, and tickets. Use the Search API for complex queries. Webhook subscriptions require a valid endpoint that responds to verification challenges. ## Xero Accounting Integration Xero uses OAuth 2.0. The API base is https://api.xero.com/api.xro/2.0/. Endpoints include Invoices, Contacts, Payments, and BankTransactions. Connections are tenant-specific—multi-tenant apps must handle organization switching. Rate limits: 60 calls per minute per organization. ## PostgreSQL Best Practices Use connection pooling (PgBouncer) for web applications. Index foreign keys and frequently queried columns. Avoid N+1 queries—use JOINs or batch loading. For large tables, consider partitioning by date. Always use parameterized queries to prevent SQL injection. ## Redis Caching Patterns Use Redis for session storage, rate limiting, and cache-aside patterns. Set TTLs on cached data to prevent stale reads. Consider Redis Cluster for high availability. Monitor memory usage—Redis holds everything in RAM. ## HubSpot CRM Integration HubSpot offers a REST API and webhooks for real-time sync. Authentication uses private apps (access token) or OAuth for public apps. The CRM API covers contacts, companies, deals, and tickets. Use the Search API for complex queries. Webhook subscriptions require a valid endpoint that responds to verification challenges. ## Xero Accounting Integration Xero uses OAuth 2.0. The API base is https://api.xero.com/api.xro/2.0/. Endpoints include Invoices, Contacts, Payments, and BankTransactions. Connections are tenant-specific—multi-tenant apps must handle organization switching. Rate limits: 60 calls per minute per organization. ## PostgreSQL Best Practices Use connection pooling (PgBouncer) for web applications. Index foreign keys and frequently queried columns. Avoid N+1 queries—use JOINs or batch loading. For large tables, consider partitioning by date. Always use parameterized queries to prevent SQL injection. ## Redis Caching Patterns Use Redis for session storage, rate limiting, and cache-aside patterns. Set TTLs on cached data to prevent stale reads. Consider Redis Cluster for high availability. Monitor memory usage—Redis holds everything in RAM. ## HubSpot CRM Integration HubSpot offers a REST API and webhooks for real-time sync. Authentication uses private apps (access token) or OAuth for public apps. The CRM API covers contacts, companies, deals, and tickets. Use the Search API for complex queries. Webhook subscriptions require a valid endpoint that responds to verification challenges. ## Xero Accounting Integration Xero uses OAuth 2.0. The API base is https://api.xero.com/api.xro/2.0/. Endpoints include Invoices, Contacts, Payments, and BankTransactions. Connections are tenant-specific—multi-tenant apps must handle organization switching. Rate limits: 60 calls per minute per organization. ## PostgreSQL Best Practices Use connection pooling (PgBouncer) for web applications. Index foreign keys and frequently queried columns. Avoid N+1 queries—use JOINs or batch loading. For large tables, consider partitioning by date. Always use parameterized queries to prevent SQL injection. ## Redis Caching Patterns Use Redis for session storage, rate limiting, and cache-aside patterns. Set TTLs on cached data to prevent stale reads. Consider Redis Cluster for high availability. Monitor memory usage—Redis holds everything in RAM. ## HubSpot CRM Integration HubSpot offers a REST API and webhooks for real-time sync. Authentication uses private apps (access token) or OAuth for public apps. The CRM API covers contacts, companies, deals, and tickets. Use the Search API for complex queries. Webhook subscriptions require a valid endpoint that responds to verification challenges. ## Xero Accounting Integration Xero uses OAuth 2.0. The API base is https://api.xero.com/api.xro/2.0/. Endpoints include Invoices, Contacts, Payments, and BankTransactions. Connections are tenant-specific—multi-tenant apps must handle organization switching. Rate limits: 60 calls per minute per organization. ## PostgreSQL Best Practices Use connection pooling (PgBouncer) for web applications. Index foreign keys and frequently queried columns. Avoid N+1 queries—use JOINs or batch loading. For large tables, consider partitioning by date. Always use parameterized queries to prevent SQL injection. ## Redis Caching Patterns Use Redis for session storage, rate limiting, and cache-aside patterns. Set TTLs on cached data to prevent stale reads. Consider Redis Cluster for high availability. Monitor memory usage—Redis holds everything in RAM. ## HubSpot CRM Integration HubSpot offers a REST API and webhooks for real-time sync. Authentication uses private apps (access token) or OAuth for public apps. The CRM API covers contacts, companies, deals, and tickets. Use the Search API for complex queries. Webhook subscriptions require a valid endpoint that responds to verification challenges. ## Xero Accounting Integration Xero uses OAuth 2.0. The API base is https://api.xero.com/api.xro/2.0/. Endpoints include Invoices, Contacts, Payments, and BankTransactions. Connections are tenant-specific—multi-tenant apps must handle organization switching. Rate limits: 60 calls per minute per organization. ## PostgreSQL Best Practices Use connection pooling (PgBouncer) for web applications. Index foreign keys and frequently queried columns. Avoid N+1 queries—use JOINs or batch loading. For large tables, consider partitioning by date. Always use parameterized queries to prevent SQL injection. ## Redis Caching Patterns Use Redis for session storage, rate limiting, and cache-aside patterns. Set TTLs on cached data to prevent stale reads. Consider Redis Cluster for high availability. Monitor memory usage—Redis holds everything in RAM. ## HubSpot CRM Integration HubSpot offers a REST API and webhooks for real-time sync. Authentication uses private apps (access token) or OAuth for public apps. The CRM API covers contacts, companies, deals, and tickets. Use the Search API for complex queries. Webhook subscriptions require a valid endpoint that responds to verification challenges. ## Xero Accounting Integration Xero uses OAuth 2.0. The API base is https://api.xero.com/api.xro/2.0/. Endpoints include Invoices, Contacts, Payments, and BankTransactions. Connections are tenant-specific—multi-tenant apps must handle organization switching. Rate limits: 60 calls per minute per organization. ## PostgreSQL Best Practices Use connection pooling (PgBouncer) for web applications. Index foreign keys and frequently queried columns. Avoid N+1 queries—use JOINs or batch loading. For large tables, consider partitioning by date. Always use parameterized queries to prevent SQL injection. ## Redis Caching Patterns Use Redis for session storage, rate limiting, and cache-aside patterns. Set TTLs on cached data to prevent stale reads. Consider Redis Cluster for high availability. Monitor memory usage—Redis holds everything in RAM. ## HubSpot CRM Integration HubSpot offers a REST API and webhooks for real-time sync. Authentication uses private apps (access token) or OAuth for public apps. The CRM API covers contacts, companies, deals, and tickets. Use the Search API for complex queries. Webhook subscriptions require a valid endpoint that responds to verification challenges. ## Xero Accounting Integration Xero uses OAuth 2.0. The API base is https://api.xero.com/api.xro/2.0/. Endpoints include Invoices, Contacts, Payments, and BankTransactions. Connections are tenant-specific—multi-tenant apps must handle organization switching. Rate limits: 60 calls per minute per organization. ## PostgreSQL Best Practices Use connection pooling (PgBouncer) for web applications. Index foreign keys and frequently queried columns. Avoid N+1 queries—use JOINs or batch loading. For large tables, consider partitioning by date. Always use parameterized queries to prevent SQL injection. ## Redis Caching Patterns Use Redis for session storage, rate limiting, and cache-aside patterns. Set TTLs on cached data to prevent stale reads. Consider Redis Cluster for high availability. Monitor memory usage—Redis holds everything in RAM. ## HubSpot CRM Integration HubSpot offers a REST API and webhooks for real-time sync. Authentication uses private apps (access token) or OAuth for public apps. The CRM API covers contacts, companies, deals, and tickets. Use the Search API for complex queries. Webhook subscriptions require a valid endpoint that responds to verification challenges. ## Xero Accounting Integration Xero uses OAuth 2.0. The API base is https://api.xero.com/api.xro/2.0/. Endpoints include Invoices, Contacts, Payments, and BankTransactions. Connections are tenant-specific—multi-tenant apps must handle organization switching. Rate limits: 60 calls per minute per organization. ## PostgreSQL Best Practices Use connection pooling (PgBouncer) for web applications. Index foreign keys and frequently queried columns. Avoid N+1 queries—use JOINs or batch loading. For large tables, consider partitioning by date. Always use parameterized queries to prevent SQL injection. ## Redis Caching Patterns Use Redis for session storage, rate limiting, and cache-aside patterns. Set TTLs on cached data to prevent stale reads. Consider Redis Cluster for high availability. Monitor memory usage—Redis holds everything in RAM. ## HubSpot CRM Integration HubSpot offers a REST API and webhooks for real-time sync. Authentication uses private apps (access token) or OAuth for public apps. The CRM API covers contacts, companies, deals, and tickets. Use the Search API for complex queries. Webhook subscriptions require a valid endpoint that responds to verification challenges. ## Xero Accounting Integration Xero uses OAuth 2.0. The API base is https://api.xero.com/api.xro/2.0/. Endpoints include Invoices, Contacts, Payments, and BankTransactions. Connections are tenant-specific—multi-tenant apps must handle organization switching. Rate limits: 60 calls per minute per organization. ## PostgreSQL Best Practices Use connection pooling (PgBouncer) for web applications. Index foreign keys and frequently queried columns. Avoid N+1 queries—use JOINs or batch loading. For large tables, consider partitioning by date. Always use parameterized queries to prevent SQL injection. ## Redis Caching Patterns Use Redis for session storage, rate limiting, and cache-aside patterns. Set TTLs on cached data to prevent stale reads. Consider Redis Cluster for high availability. Monitor memory usage—Redis holds everything in RAM. ## HubSpot CRM Integration HubSpot offers a REST API and webhooks for real-time sync. Authentication uses private apps (access token) or OAuth for public apps. The CRM API covers contacts, companies, deals, and tickets. Use the Search API for complex queries. Webhook subscriptions require a valid endpoint that responds to verification challenges. ## Xero Accounting Integration Xero uses OAuth 2.0. The API base is https://api.xero.com/api.xro/2.0/. Endpoints include Invoices, Contacts, Payments, and BankTransactions. Connections are tenant-specific—multi-tenant apps must handle organization switching. Rate limits: 60 calls per minute per organization. ## PostgreSQL Best Practices Use connection pooling (PgBouncer) for web applications. Index foreign keys and frequently queried columns. Avoid N+1 queries—use JOINs or batch loading. For large tables, consider partitioning by date. Always use parameterized queries to prevent SQL injection. ## Redis Caching Patterns Use Redis for session storage, rate limiting, and cache-aside patterns. Set TTLs on cached data to prevent stale reads. Consider Redis Cluster for high availability. Monitor memory usage—Redis holds everything in RAM. ## HubSpot CRM Integration HubSpot offers a REST API and webhooks for real-time sync. Authentication uses private apps (access token) or OAuth for public apps. The CRM API covers contacts, companies, deals, and tickets. Use the Search API for complex queries. Webhook subscriptions require a valid endpoint that responds to verification challenges. ## Xero Accounting Integration Xero uses OAuth 2.0. The API base is https://api.xero.com/api.xro/2.0/. Endpoints include Invoices, Contacts, Payments, and BankTransactions. Connections are tenant-specific—multi-tenant apps must handle organization switching. Rate limits: 60 calls per minute per organization. ## PostgreSQL Best Practices Use connection pooling (PgBouncer) for web applications. Index foreign keys and frequently queried columns. Avoid N+1 queries—use JOINs or batch loading. For large tables, consider partitioning by date. Always use parameterized queries to prevent SQL injection. ## Redis Caching Patterns Use Redis for session storage, rate limiting, and cache-aside patterns. Set TTLs on cached data to prevent stale reads. Consider Redis Cluster for high availability. Monitor memory usage—Redis holds everything in RAM. ## HubSpot CRM Integration HubSpot offers a REST API and webhooks for real-time sync. Authentication uses private apps (access token) or OAuth for public apps. The CRM API covers contacts, companies, deals, and tickets. Use the Search API for complex queries. Webhook subscriptions require a valid endpoint that responds to verification challenges. ## Xero Accounting Integration Xero uses OAuth 2.0. The API base is https://api.xero.com/api.xro/2.0/. Endpoints include Invoices, Contacts, Payments, and BankTransactions. Connections are tenant-specific—multi-tenant apps must handle organization switching. Rate limits: 60 calls per minute per organization. ## PostgreSQL Best Practices Use connection pooling (PgBouncer) for web applications. Index foreign keys and frequently queried columns. Avoid N+1 queries—use JOINs or batch loading. For large tables, consider partitioning by date. Always use parameterized queries to prevent SQL injection. ## Redis Caching Patterns Use Redis for session storage, rate limiting, and cache-aside patterns. Set TTLs on cached data to prevent stale reads. Consider Redis Cluster for high availability. Monitor memory usage—Redis holds everything in RAM. ## HubSpot CRM Integration HubSpot offers a REST API and webhooks for real-time sync. Authentication uses private apps (access token) or OAuth for public apps. The CRM API covers contacts, companies, deals, and tickets. Use the Search API for complex queries. Webhook subscriptions require a valid endpoint that responds to verification challenges. ## Xero Accounting Integration Xero uses OAuth 2.0. The API base is https://api.xero.com/api.xro/2.0/. Endpoints include Invoices, Contacts, Payments, and BankTransactions. Connections are tenant-specific—multi-tenant apps must handle organization switching. Rate limits: 60 calls per minute per organization. ## PostgreSQL Best Practices Use connection pooling (PgBouncer) for web applications. Index foreign keys and frequently queried columns. Avoid N+1 queries—use JOINs or batch loading. For large tables, consider partitioning by date. Always use parameterized queries to prevent SQL injection. ## Redis Caching Patterns Use Redis for session storage, rate limiting, and cache-aside patterns. Set TTLs on cached data to prevent stale reads. Consider Redis Cluster for high availability. Monitor memory usage—Redis holds everything in RAM. ## HubSpot CRM Integration HubSpot offers a REST API and webhooks for real-time sync. Authentication uses private apps (access token) or OAuth for public apps. The CRM API covers contacts, companies, deals, and tickets. Use the Search API for complex queries. Webhook subscriptions require a valid endpoint that responds to verification challenges. ## Xero Accounting Integration Xero uses OAuth 2.0. The API base is https://api.xero.com/api.xro/2.0/. Endpoints include Invoices, Contacts, Payments, and BankTransactions. Connections are tenant-specific—multi-tenant apps must handle organization switching. Rate limits: 60 calls per minute per organization. ## PostgreSQL Best Practices Use connection pooling (PgBouncer) for web applications. Index foreign keys and frequently queried columns. Avoid N+1 queries—use JOINs or batch loading. For large tables, consider partitioning by date. Always use parameterized queries to prevent SQL injection. ## Redis Caching Patterns Use Redis for session storage, rate limiting, and cache-aside patterns. Set TTLs on cached data to prevent stale reads. Consider Redis Cluster for high availability. Monitor memory usage—Redis holds everything in RAM. ## HubSpot CRM Integration HubSpot offers a REST API and webhooks for real-time sync. Authentication uses private apps (access token) or OAuth for public apps. The CRM API covers contacts, companies, deals, and tickets. Use the Search API for complex queries. Webhook subscriptions require a valid endpoint that responds to verification challenges. ## Xero Accounting Integration Xero uses OAuth 2.0. The API base is https://api.xero.com/api.xro/2.0/. Endpoints include Invoices, Contacts, Payments, and BankTransactions. Connections are tenant-specific—multi-tenant apps must handle organization switching. Rate limits: 60 calls per minute per organization. ## PostgreSQL Best Practices Use connection pooling (PgBouncer) for web applications. Index foreign keys and frequently queried columns. Avoid N+1 queries—use JOINs or batch loading. For large tables, consider partitioning by date. Always use parameterized queries to prevent SQL injection. ## Redis Caching Patterns Use Redis for session storage, rate limiting, and cache-aside patterns. Set TTLs on cached data to prevent stale reads. Consider Redis Cluster for high availability. Monitor memory usage—Redis holds everything in RAM. ## HubSpot CRM Integration HubSpot offers a REST API and webhooks for real-time sync. Authentication uses private apps (access token) or OAuth for public apps. The CRM API covers contacts, companies, deals, and tickets. Use the Search API for complex queries. Webhook subscriptions require a valid endpoint that responds to verification challenges. ## Xero Accounting Integration Xero uses OAuth 2.0. The API base is https://api.xero.com/api.xro/2.0/. Endpoints include Invoices, Contacts, Payments, and BankTransactions. Connections are tenant-specific—multi-tenant apps must handle organization switching. Rate limits: 60 calls per minute per organization. ## PostgreSQL Best Practices Use connection pooling (PgBouncer) for web applications. Index foreign keys and frequently queried columns. Avoid N+1 queries—use JOINs or batch loading. For large tables, consider partitioning by date. Always use parameterized queries to prevent SQL injection. ## Redis Caching Patterns Use Redis for session storage, rate limiting, and cache-aside patterns. Set TTLs on cached data to prevent stale reads. Consider Redis Cluster for high availability. Monitor memory usage—Redis holds everything in RAM. ## HubSpot CRM Integration HubSpot offers a REST API and webhooks for real-time sync. Authentication uses private apps (access token) or OAuth for public apps. The CRM API covers contacts, companies, deals, and tickets. Use the Search API for complex queries. Webhook subscriptions require a valid endpoint that responds to verification challenges. ## Xero Accounting Integration Xero uses OAuth 2.0. The API base is https://api.xero.com/api.xro/2.0/. Endpoints include Invoices, Contacts, Payments, and BankTransactions. Connections are tenant-specific—multi-tenant apps must handle organization switching. Rate limits: 60 calls per minute per organization. ## PostgreSQL Best Practices Use connection pooling (PgBouncer) for web applications. Index foreign keys and frequently queried columns. Avoid N+1 queries—use JOINs or batch loading. For large tables, consider partitioning by date. Always use parameterized queries to prevent SQL injection. ## Redis Caching Patterns Use Redis for session storage, rate limiting, and cache-aside patterns. Set TTLs on cached data to prevent stale reads. Consider Redis Cluster for high availability. Monitor memory usage—Redis holds everything in RAM. ## HubSpot CRM Integration HubSpot offers a REST API and webhooks for real-time sync. Authentication uses private apps (access token) or OAuth for public apps. The CRM API covers contacts, companies, deals, and tickets. Use the Search API for complex queries. Webhook subscriptions require a valid endpoint that responds to verification challenges. ## Xero Accounting Integration Xero uses OAuth 2.0. The API base is https://api.xero.com/api.xro/2.0/. Endpoints include Invoices, Contacts, Payments, and BankTransactions. Connections are tenant-specific—multi-tenant apps must handle organization switching. Rate limits: 60 calls per minute per organization. ## PostgreSQL Best Practices Use connection pooling (PgBouncer) for web applications. Index foreign keys and frequently queried columns. Avoid N+1 queries—use JOINs or batch loading. For large tables, consider partitioning by date. Always use parameterized queries to prevent SQL injection. ## Redis Caching Patterns Use Redis for session storage, rate limiting, and cache-aside patterns. Set TTLs on cached data to prevent stale reads. Consider Redis Cluster for high availability. Monitor memory usage—Redis holds everything in RAM. ## HubSpot CRM Integration HubSpot offers a REST API and webhooks for real-time sync. Authentication uses private apps (access token) or OAuth for public apps. The CRM API covers contacts, companies, deals, and tickets. Use the Search API for complex queries. Webhook subscriptions require a valid endpoint that responds to verification challenges. ## Xero Accounting Integration Xero uses OAuth 2.0. The API base is https://api.xero.com/api.xro/2.0/. Endpoints include Invoices, Contacts, Payments, and BankTransactions. Connections are tenant-specific—multi-tenant apps must handle organization switching. Rate limits: 60 calls per minute per organization. ## PostgreSQL Best Practices Use connection pooling (PgBouncer) for web applications. Index foreign keys and frequently queried columns. Avoid N+1 queries—use JOINs or batch loading. For large tables, consider partitioning by date. Always use parameterized queries to prevent SQL injection. ## Redis Caching Patterns Use Redis for session storage, rate limiting, and cache-aside patterns. Set TTLs on cached data to prevent stale reads. Consider Redis Cluster for high availability. Monitor memory usage—Redis holds everything in RAM. ## HubSpot CRM Integration HubSpot offers a REST API and webhooks for real-time sync. Authentication uses private apps (access token) or OAuth for public apps. The CRM API covers contacts, companies, deals, and tickets. Use the Search API for complex queries. Webhook subscriptions require a valid endpoint that responds to verification challenges. ## Xero Accounting Integration Xero uses OAuth 2.0. The API base is https://api.xero.com/api.xro/2.0/. Endpoints include Invoices, Contacts, Payments, and BankTransactions. Connections are tenant-specific—multi-tenant apps must handle organization switching. Rate limits: 60 calls per minute per organization. ## PostgreSQL Best Practices Use connection pooling (PgBouncer) for web applications. Index foreign keys and frequently queried columns. Avoid N+1 queries—use JOINs or batch loading. For large tables, consider partitioning by date. Always use parameterized queries to prevent SQL injection. ## Redis Caching Patterns Use Redis for session storage, rate limiting, and cache-aside patterns. Set TTLs on cached data to prevent stale reads. Consider Redis Cluster for high availability. Monitor memory usage—Redis holds everything in RAM. ## HubSpot CRM Integration HubSpot offers a REST API and webhooks for real-time sync. Authentication uses private apps (access token) or OAuth for public apps. The CRM API covers contacts, companies, deals, and tickets. Use the Search API for complex queries. Webhook subscriptions require a valid endpoint that responds to verification challenges. ## Xero Accounting Integration Xero uses OAuth 2.0. The API base is https://api.xero.com/api.xro/2.0/. Endpoints include Invoices, Contacts, Payments, and BankTransactions. Connections are tenant-specific—multi-tenant apps must handle organization switching. Rate limits: 60 calls per minute per organization. ## PostgreSQL Best Practices Use connection pooling (PgBouncer) for web applications. Index foreign keys and frequently queried columns. Avoid N+1 queries—use JOINs or batch loading. For large tables, consider partitioning by date. Always use parameterized queries to prevent SQL injection. ## Redis Caching Patterns Use Redis for session storage, rate limiting, and cache-aside patterns. Set TTLs on cached data to prevent stale reads. Consider Redis Cluster for high availability. Monitor memory usage—Redis holds everything in RAM. ## HubSpot CRM Integration HubSpot offers a REST API and webhooks for real-time sync. Authentication uses private apps (access token) or OAuth for public apps. The CRM API covers contacts, companies, deals, and tickets. Use the Search API for complex queries. Webhook subscriptions require a valid endpoint that responds to verification challenges. ## Xero Accounting Integration Xero uses OAuth 2.0. The API base is https://api.xero.com/api.xro/2.0/. Endpoints include Invoices, Contacts, Payments, and BankTransactions. Connections are tenant-specific—multi-tenant apps must handle organization switching. Rate limits: 60 calls per minute per organization. ## PostgreSQL Best Practices Use connection pooling (PgBouncer) for web applications. Index foreign keys and frequently queried columns. Avoid N+1 queries—use JOINs or batch loading. For large tables, consider partitioning by date. Always use parameterized queries to prevent SQL injection. ## Redis Caching Patterns Use Redis for session storage, rate limiting, and cache-aside patterns. Set TTLs on cached data to prevent stale reads. Consider Redis Cluster for high availability. Monitor memory usage—Redis holds everything in RAM. ## HubSpot CRM Integration HubSpot offers a REST API and webhooks for real-time sync. Authentication uses private apps (access token) or OAuth for public apps. The CRM API covers contacts, companies, deals, and tickets. Use the Search API for complex queries. Webhook subscriptions require a valid endpoint that responds to verification challenges. ## Xero Accounting Integration Xero uses OAuth 2.0. The API base is https://api.xero.com/api.xro/2.0/. Endpoints include Invoices, Contacts, Payments, and BankTransactions. Connections are tenant-specific—multi-tenant apps must handle organization switching. Rate limits: 60 calls per minute per organization. ## PostgreSQL Best Practices Use connection pooling (PgBouncer) for web applications. Index foreign keys and frequently queried columns. Avoid N+1 queries—use JOINs or batch loading. For large tables, consider partitioning by date. Always use parameterized queries to prevent SQL injection. ## Redis Caching Patterns Use Redis for session storage, rate limiting, and cache-aside patterns. Set TTLs on cached data to prevent stale reads. Consider Redis Cluster for high availability. Monitor memory usage—Redis holds everything in RAM. ## HubSpot CRM Integration HubSpot offers a REST API and webhooks for real-time sync. Authentication uses private apps (access token) or OAuth for public apps. The CRM API covers contacts, companies, deals, and tickets. Use the Search API for complex queries. Webhook subscriptions require a valid endpoint that responds to verification challenges. ## Xero Accounting Integration Xero uses OAuth 2.0. The API base is https://api.xero.com/api.xro/2.0/. Endpoints include Invoices, Contacts, Payments, and BankTransactions. Connections are tenant-specific—multi-tenant apps must handle organization switching. Rate limits: 60 calls per minute per organization. ## PostgreSQL Best Practices Use connection pooling (PgBouncer) for web applications. Index foreign keys and frequently queried columns. Avoid N+1 queries—use JOINs or batch loading. For large tables, consider partitioning by date. Always use parameterized queries to prevent SQL injection. ## Redis Caching Patterns Use Redis for session storage, rate limiting, and cache-aside patterns. Set TTLs on cached data to prevent stale reads. Consider Redis Cluster for high availability. Monitor memory usage—Redis holds everything in RAM. ## HubSpot CRM Integration HubSpot offers a REST API and webhooks for real-time sync. Authentication uses private apps (access token) or OAuth for public apps. The CRM API covers contacts, companies, deals, and tickets. Use the Search API for complex queries. Webhook subscriptions require a valid endpoint that responds to verification challenges. ## Xero Accounting Integration Xero uses OAuth 2.0. The API base is https://api.xero.com/api.xro/2.0/. Endpoints include Invoices, Contacts, Payments, and BankTransactions. Connections are tenant-specific—multi-tenant apps must handle organization switching. Rate limits: 60 calls per minute per organization. ## PostgreSQL Best Practices Use connection pooling (PgBouncer) for web applications. Index foreign keys and frequently queried columns. Avoid N+1 queries—use JOINs or batch loading. For large tables, consider partitioning by date. Always use parameterized queries to prevent SQL injection. ## Redis Caching Patterns Use Redis for session storage, rate limiting, and cache-aside patterns. Set TTLs on cached data to prevent stale reads. Consider Redis Cluster for high availability. Monitor memory usage—Redis holds everything in RAM. ## HubSpot CRM Integration HubSpot offers a REST API and webhooks for real-time sync. Authentication uses private apps (access token) or OAuth for public apps. The CRM API covers contacts, companies, deals, and tickets. Use the Search API for complex queries. Webhook subscriptions require a valid endpoint that responds to verification challenges. ## Xero Accounting Integration Xero uses OAuth 2.0. The API base is https://api.xero.com/api.xro/2.0/. Endpoints include Invoices, Contacts, Payments, and BankTransactions. Connections are tenant-specific—multi-tenant apps must handle organization switching. Rate limits: 60 calls per minute per organization. ## PostgreSQL Best Practices Use connection pooling (PgBouncer) for web applications. Index foreign keys and frequently queried columns. Avoid N+1 queries—use JOINs or batch loading. For large tables, consider partitioning by date. Always use parameterized queries to prevent SQL injection. ## Redis Caching Patterns Use Redis for session storage, rate limiting, and cache-aside patterns. Set TTLs on cached data to prevent stale reads. Consider Redis Cluster for high availability. Monitor memory usage—Redis holds everything in RAM. ## HubSpot CRM Integration HubSpot offers a REST API and webhooks for real-time sync. Authentication uses private apps (access token) or OAuth for public apps. The CRM API covers contacts, companies, deals, and tickets. Use the Search API for complex queries. Webhook subscriptions require a valid endpoint that responds to verification challenges. ## Xero Accounting Integration Xero uses OAuth 2.0. The API base is https://api.xero.com/api.xro/2.0/. Endpoints include Invoices, Contacts, Payments, and BankTransactions. Connections are tenant-specific—multi-tenant apps must handle organization switching. Rate limits: 60 calls per minute per organization. ## PostgreSQL Best Practices Use connection pooling (PgBouncer) for web applications. Index foreign keys and frequently queried columns. Avoid N+1 queries—use JOINs or batch loading. For large tables, consider partitioning by date. Always use parameterized queries to prevent SQL injection. ## Redis Caching Patterns Use Redis for session storage, rate limiting, and cache-aside patterns. Set TTLs on cached data to prevent stale reads. Consider Redis Cluster for high availability. Monitor memory usage—Redis holds everything in RAM. ## HubSpot CRM Integration HubSpot offers a REST API and webhooks for real-time sync. Authentication uses private apps (access token) or OAuth for public apps. The CRM API covers contacts, companies, deals, and tickets. Use the Search API for complex queries. Webhook subscriptions require a valid endpoint that responds to verification challenges. ## Xero Accounting Integration Xero uses OAuth 2.0. The API base is https://api.xero.com/api.xro/2.0/. Endpoints include Invoices, Contacts, Payments, and BankTransactions. Connections are tenant-specific—multi-tenant apps must handle organization switching. Rate limits: 60 calls per minute per organization. ## PostgreSQL Best Practices Use connection pooling (PgBouncer) for web applications. Index foreign keys and frequently queried columns. Avoid N+1 queries—use JOINs or batch loading. For large tables, consider partitioning by date. Always use parameterized queries to prevent SQL injection. ## Redis Caching Patterns Use Redis for session storage, rate limiting, and cache-aside patterns. Set TTLs on cached data to prevent stale reads. Consider Redis Cluster for high availability. Monitor memory usage—Redis holds everything in RAM. ## HubSpot CRM Integration HubSpot offers a REST API and webhooks for real-time sync. Authentication uses private apps (access token) or OAuth for public apps. The CRM API covers contacts, companies, deals, and tickets. Use the Search API for complex queries. Webhook subscriptions require a valid endpoint that responds to verification challenges. ## Xero Accounting Integration Xero uses OAuth 2.0. The API base is https://api.xero.com/api.xro/2.0/. Endpoints include Invoices, Contacts, Payments, and BankTransactions. Connections are tenant-specific—multi-tenant apps must handle organization switching. Rate limits: 60 calls per minute per organization. ## PostgreSQL Best Practices Use connection pooling (PgBouncer) for web applications. Index foreign keys and frequently queried columns. Avoid N+1 queries—use JOINs or batch loading. For large tables, consider partitioning by date. Always use parameterized queries to prevent SQL injection. ## Redis Caching Patterns Use Redis for session storage, rate limiting, and cache-aside patterns. Set TTLs on cached data to prevent stale reads. Consider Redis Cluster for high availability. Monitor memory usage—Redis holds everything in RAM. ## HubSpot CRM Integration HubSpot offers a REST API and webhooks for real-time sync. Authentication uses private apps (access token) or OAuth for public apps. The CRM API covers contacts, companies, deals, and tickets. Use the Search API for complex queries. Webhook subscriptions require a valid endpoint that responds to verification challenges. ## Xero Accounting Integration Xero uses OAuth 2.0. The API base is https://api.xero.com/api.xro/2.0/. Endpoints include Invoices, Contacts, Payments, and BankTransactions. Connections are tenant-specific—multi-tenant apps must handle organization switching. Rate limits: 60 calls per minute per organization. ## PostgreSQL Best Practices Use connection pooling (PgBouncer) for web applications. Index foreign keys and frequently queried columns. Avoid N+1 queries—use JOINs or batch loading. For large tables, consider partitioning by date. Always use parameterized queries to prevent SQL injection. ## Redis Caching Patterns Use Redis for session storage, rate limiting, and cache-aside patterns. Set TTLs on cached data to prevent stale reads. Consider Redis Cluster for high availability. Monitor memory usage—Redis holds everything in RAM. ## HubSpot CRM Integration HubSpot offers a REST API and webhooks for real-time sync. Authentication uses private apps (access token) or OAuth for public apps. The CRM API covers contacts, companies, deals, and tickets. Use the Search API for complex queries. Webhook subscriptions require a valid endpoint that responds to verification challenges. ## Xero Accounting Integration Xero uses OAuth 2.0. The API base is https://api.xero.com/api.xro/2.0/. Endpoints include Invoices, Contacts, Payments, and BankTransactions. Connections are tenant-specific—multi-tenant apps must handle organization switching. Rate limits: 60 calls per minute per organization. ## PostgreSQL Best Practices Use connection pooling (PgBouncer) for web applications. Index foreign keys and frequently queried columns. Avoid N+1 queries—use JOINs or batch loading. For large tables, consider partitioning by date. Always use parameterized queries to prevent SQL injection. ## Redis Caching Patterns Use Redis for session storage, rate limiting, and cache-aside patterns. Set TTLs on cached data to prevent stale reads. Consider Redis Cluster for high availability. Monitor memory usage—Redis holds everything in RAM. ## HubSpot CRM Integration HubSpot offers a REST API and webhooks for real-time sync. Authentication uses private apps (access token) or OAuth for public apps. The CRM API covers contacts, companies, deals, and tickets. Use the Search API for complex queries. Webhook subscriptions require a valid endpoint that responds to verification challenges. ## Xero Accounting Integration Xero uses OAuth 2.0. The API base is https://api.xero.com/api.xro/2.0/. Endpoints include Invoices, Contacts, Payments, and BankTransactions. Connections are tenant-specific—multi-tenant apps must handle organization switching. Rate limits: 60 calls per minute per organization. ## PostgreSQL Best Practices Use connection pooling (PgBouncer) for web applications. Index foreign keys and frequently queried columns. Avoid N+1 queries—use JOINs or batch loading. For large tables, consider partitioning by date. Always use parameterized queries to prevent SQL injection. ## Redis Caching Patterns Use Redis for session storage, rate limiting, and cache-aside patterns. Set TTLs on cached data to prevent stale reads. Consider Redis Cluster for high availability. Monitor memory usage—Redis holds everything in RAM. ## HubSpot CRM Integration HubSpot offers a REST API and webhooks for real-time sync. Authentication uses private apps (access token) or OAuth for public apps. The CRM API covers contacts, companies, deals, and tickets. Use the Search API for complex queries. Webhook subscriptions require a valid endpoint that responds to verification challenges. ## Xero Accounting Integration Xero uses OAuth 2.0. The API base is https://api.xero.com/api.xro/2.0/. Endpoints include Invoices, Contacts, Payments, and BankTransactions. Connections are tenant-specific—multi-tenant apps must handle organization switching. Rate limits: 60 calls per minute per organization. ## PostgreSQL Best Practices Use connection pooling (PgBouncer) for web applications. Index foreign keys and frequently queried columns. Avoid N+1 queries—use JOINs or batch loading. For large tables, consider partitioning by date. Always use parameterized queries to prevent SQL injection. ## Redis Caching Patterns Use Redis for session storage, rate limiting, and cache-aside patterns. Set TTLs on cached data to prevent stale reads. Consider Redis Cluster for high availability. Monitor memory usage—Redis holds everything in RAM. ## HubSpot CRM Integration HubSpot offers a REST API and webhooks for real-time sync. Authentication uses private apps (access token) or OAuth for public apps. The CRM API covers contacts, companies, deals, and tickets. Use the Search API for complex queries. Webhook subscriptions require a valid endpoint that responds to verification challenges. ## Xero Accounting Integration Xero uses OAuth 2.0. The API base is https://api.xero.com/api.xro/2.0/. Endpoints include Invoices, Contacts, Payments, and BankTransactions. Connections are tenant-specific—multi-tenant apps must handle organization switching. Rate limits: 60 calls per minute per organization. ## PostgreSQL Best Practices Use connection pooling (PgBouncer) for web applications. Index foreign keys and frequently queried columns. Avoid N+1 queries—use JOINs or batch loading. For large tables, consider partitioning by date. Always use parameterized queries to prevent SQL injection. ## Redis Caching Patterns Use Redis for session storage, rate limiting, and cache-aside patterns. Set TTLs on cached data to prevent stale reads. Consider Redis Cluster for high availability. Monitor memory usage—Redis holds everything in RAM. ## HubSpot CRM Integration HubSpot offers a REST API and webhooks for real-time sync. Authentication uses private apps (access token) or OAuth for public apps. The CRM API covers contacts, companies, deals, and tickets. Use the Search API for complex queries. Webhook subscriptions require a valid endpoint that responds to verification challenges. ## Xero Accounting Integration Xero uses OAuth 2.0. The API base is https://api.xero.com/api.xro/2.0/. Endpoints include Invoices, Contacts, Payments, and BankTransactions. Connections are tenant-specific—multi-tenant apps must handle organization switching. Rate limits: 60 calls per minute per organization. ## PostgreSQL Best Practices Use connection pooling (PgBouncer) for web applications. Index foreign keys and frequently queried columns. Avoid N+1 queries—use JOINs or batch loading. For large tables, consider partitioning by date. Always use parameterized queries to prevent SQL injection. ## Redis Caching Patterns Use Redis for session storage, rate limiting, and cache-aside patterns. Set TTLs on cached data to prevent stale reads. Consider Redis Cluster for high availability. Monitor memory usage—Redis holds everything in RAM. ## HubSpot CRM Integration HubSpot offers a REST API and webhooks for real-time sync. Authentication uses private apps (access token) or OAuth for public apps. The CRM API covers contacts, companies, deals, and tickets. Use the Search API for complex queries. Webhook subscriptions require a valid endpoint that responds to verification challenges. ## Xero Accounting Integration Xero uses OAuth 2.0. The API base is https://api.xero.com/api.xro/2.0/. Endpoints include Invoices, Contacts, Payments, and BankTransactions. Connections are tenant-specific—multi-tenant apps must handle organization switching. Rate limits: 60 calls per minute per organization. ## PostgreSQL Best Practices Use connection pooling (PgBouncer) for web applications. Index foreign keys and frequently queried columns. Avoid N+1 queries—use JOINs or batch loading. For large tables, consider partitioning by date. Always use parameterized queries to prevent SQL injection. ## Redis Caching Patterns Use Redis for session storage, rate limiting, and cache-aside patterns. Set TTLs on cached data to prevent stale reads. Consider Redis Cluster for high availability. Monitor memory usage—Redis holds everything in RAM. ## HubSpot CRM Integration HubSpot offers a REST API and webhooks for real-time sync. Authentication uses private apps (access token) or OAuth for public apps. The CRM API covers contacts, companies, deals, and tickets. Use the Search API for complex queries. Webhook subscriptions require a valid endpoint that responds to verification challenges. ## Xero Accounting Integration Xero uses OAuth 2.0. The API base is https://api.xero.com/api.xro/2.0/. Endpoints include Invoices, Contacts, Payments, and BankTransactions. Connections are tenant-specific—multi-tenant apps must handle organization switching. Rate limits: 60 calls per minute per organization. ## PostgreSQL Best Practices Use connection pooling (PgBouncer) for web applications. Index foreign keys and frequently queried columns. Avoid N+1 queries—use JOINs or batch loading. For large tables, consider partitioning by date. Always use parameterized queries to prevent SQL injection. ## Redis Caching Patterns Use Redis for session storage, rate limiting, and cache-aside patterns. Set TTLs on cached data to prevent stale reads. Consider Redis Cluster for high availability. Monitor memory usage—Redis holds everything in RAM. ## HubSpot CRM Integration HubSpot offers a REST API and webhooks for real-time sync. Authentication uses private apps (access token) or OAuth for public apps. The CRM API covers contacts, companies, deals, and tickets. Use the Search API for complex queries. Webhook subscriptions require a valid endpoint that responds to verification challenges. ## Xero Accounting Integration Xero uses OAuth 2.0. The API base is https://api.xero.com/api.xro/2.0/. Endpoints include Invoices, Contacts, Payments, and BankTransactions. Connections are tenant-specific—multi-tenant apps must handle organization switching. Rate limits: 60 calls per minute per organization. ## PostgreSQL Best Practices Use connection pooling (PgBouncer) for web applications. Index foreign keys and frequently queried columns. Avoid N+1 queries—use JOINs or batch loading. For large tables, consider partitioning by date. Always use parameterized queries to prevent SQL injection. ## Redis Caching Patterns Use Redis for session storage, rate limiting, and cache-aside patterns. Set TTLs on cached data to prevent stale reads. Consider Redis Cluster for high availability. Monitor memory usage—Redis holds everything in RAM. ## HubSpot CRM Integration HubSpot offers a REST API and webhooks for real-time sync. Authentication uses private apps (access token) or OAuth for public apps. The CRM API covers contacts, companies, deals, and tickets. Use the Search API for complex queries. Webhook subscriptions require a valid endpoint that responds to verification challenges. ## Xero Accounting Integration Xero uses OAuth 2.0. The API base is https://api.xero.com/api.xro/2.0/. Endpoints include Invoices, Contacts, Payments, and BankTransactions. Connections are tenant-specific—multi-tenant apps must handle organization switching. Rate limits: 60 calls per minute per organization. ## PostgreSQL Best Practices Use connection pooling (PgBouncer) for web applications. Index foreign keys and frequently queried columns. Avoid N+1 queries—use JOINs or batch loading. For large tables, consider partitioning by date. Always use parameterized queries to prevent SQL injection. ## Redis Caching Patterns Use Redis for session storage, rate limiting, and cache-aside patterns. Set TTLs on cached data to prevent stale reads. Consider Redis Cluster for high availability. Monitor memory usage—Redis holds everything in RAM. ## HubSpot CRM Integration HubSpot offers a REST API and webhooks for real-time sync. Authentication uses private apps (access token) or OAuth for public apps. The CRM API covers contacts, companies, deals, and tickets. Use the Search API for complex queries. Webhook subscriptions require a valid endpoint that responds to verification challenges. ## Xero Accounting Integration Xero uses OAuth 2.0. The API base is https://api.xero.com/api.xro/2.0/. Endpoints include Invoices, Contacts, Payments, and BankTransactions. Connections are tenant-specific—multi-tenant apps must handle organization switching. Rate limits: 60 calls per minute per organization. ## PostgreSQL Best Practices Use connection pooling (PgBouncer) for web applications. Index foreign keys and frequently queried columns. Avoid N+1 queries—use JOINs or batch loading. For large tables, consider partitioning by date. Always use parameterized queries to prevent SQL injection. ## Redis Caching Patterns Use Redis for session storage, rate limiting, and cache-aside patterns. Set TTLs on cached data to prevent stale reads. Consider Redis Cluster for high availability. Monitor memory usage—Redis holds everything in RAM. ## HubSpot CRM Integration HubSpot offers a REST API and webhooks for real-time sync. Authentication uses private apps (access token) or OAuth for public apps. The CRM API covers contacts, companies, deals, and tickets. Use the Search API for complex queries. Webhook subscriptions require a valid endpoint that responds to verification challenges. ## Xero Accounting Integration Xero uses OAuth 2.0. The API base is https://api.xero.com/api.xro/2.0/. Endpoints include Invoices, Contacts, Payments, and BankTransactions. Connections are tenant-specific—multi-tenant apps must handle organization switching. Rate limits: 60 calls per minute per organization. ## PostgreSQL Best Practices Use connection pooling (PgBouncer) for web applications. Index foreign keys and frequently queried columns. Avoid N+1 queries—use JOINs or batch loading. For large tables, consider partitioning by date. Always use parameterized queries to prevent SQL injection. ## Redis Caching Patterns Use Redis for session storage, rate limiting, and cache-aside patterns. Set TTLs on cached data to prevent stale reads. Consider Redis Cluster for high availability. Monitor memory usage—Redis holds everything in RAM. ## HubSpot CRM Integration HubSpot offers a REST API and webhooks for real-time sync. Authentication uses private apps (access token) or OAuth for public apps. The CRM API covers contacts, companies, deals, and tickets. Use the Search API for complex queries. Webhook subscriptions require a valid endpoint that responds to verification challenges. ## Xero Accounting Integration Xero uses OAuth 2.0. The API base is https://api.xero.com/api.xro/2.0/. Endpoints include Invoices, Contacts, Payments, and BankTransactions. Connections are tenant-specific—multi-tenant apps must handle organization switching. Rate limits: 60 calls per minute per organization. ## PostgreSQL Best Practices Use connection pooling (PgBouncer) for web applications. Index foreign keys and frequently queried columns. Avoid N+1 queries—use JOINs or batch loading. For large tables, consider partitioning by date. Always use parameterized queries to prevent SQL injection. ## Redis Caching Patterns Use Redis for session storage, rate limiting, and cache-aside patterns. Set TTLs on cached data to prevent stale reads. Consider Redis Cluster for high availability. Monitor memory usage—Redis holds everything in RAM. ## HubSpot CRM Integration HubSpot offers a REST API and webhooks for real-time sync. Authentication uses private apps (access token) or OAuth for public apps. The CRM API covers contacts, companies, deals, and tickets. Use the Search API for complex queries. Webhook subscriptions require a valid endpoint that responds to verification challenges. ## Xero Accounting Integration Xero uses OAuth 2.0. The API base is https://api.xero.com/api.xro/2.0/. Endpoints include Invoices, Contacts, Payments, and BankTransactions. Connections are tenant-specific—multi-tenant apps must handle organization switching. Rate limits: 60 calls per minute per organization. ## PostgreSQL Best Practices Use connection pooling (PgBouncer) for web applications. Index foreign keys and frequently queried columns. Avoid N+1 queries—use JOINs or batch loading. For large tables, consider partitioning by date. Always use parameterized queries to prevent SQL injection. ## Redis Caching Patterns Use Redis for session storage, rate limiting, and cache-aside patterns. Set TTLs on cached data to prevent stale reads. Consider Redis Cluster for high availability. Monitor memory usage—Redis holds everything in RAM. ## HubSpot CRM Integration HubSpot offers a REST API and webhooks for real-time sync. Authentication uses private apps (access token) or OAuth for public apps. The CRM API covers contacts, companies, deals, and tickets. Use the Search API for complex queries. Webhook subscriptions require a valid endpoint that responds to verification challenges. ## Xero Accounting Integration Xero uses OAuth 2.0. The API base is https://api.xero.com/api.xro/2.0/. Endpoints include Invoices, Contacts, Payments, and BankTransactions. Connections are tenant-specific—multi-tenant apps must handle organization switching. Rate limits: 60 calls per minute per organization. ## PostgreSQL Best Practices Use connection pooling (PgBouncer) for web applications. Index foreign keys and frequently queried columns. Avoid N+1 queries—use JOINs or batch loading. For large tables, consider partitioning by date. Always use parameterized queries to prevent SQL injection. ## Redis Caching Patterns Use Redis for session storage, rate limiting, and cache-aside patterns. Set TTLs on cached data to prevent stale reads. Consider Redis Cluster for high availability. Monitor memory usage—Redis holds everything in RAM. ## HubSpot CRM Integration HubSpot offers a REST API and webhooks for real-time sync. Authentication uses private apps (access token) or OAuth for public apps. The CRM API covers contacts, companies, deals, and tickets. Use the Search API for complex queries. Webhook subscriptions require a valid endpoint that responds to verification challenges. ## Xero Accounting Integration Xero uses OAuth 2.0. The API base is https://api.xero.com/api.xro/2.0/. Endpoints include Invoices, Contacts, Payments, and BankTransactions. Connections are tenant-specific—multi-tenant apps must handle organization switching. Rate limits: 60 calls per minute per organization. ## PostgreSQL Best Practices Use connection pooling (PgBouncer) for web applications. Index foreign keys and frequently queried columns. Avoid N+1 queries—use JOINs or batch loading. For large tables, consider partitioning by date. Always use parameterized queries to prevent SQL injection. ## Redis Caching Patterns Use Redis for session storage, rate limiting, and cache-aside patterns. Set TTLs on cached data to prevent stale reads. Consider Redis Cluster for high availability. Monitor memory usage—Redis holds everything in RAM. ## HubSpot CRM Integration HubSpot offers a REST API and webhooks for real-time sync. Authentication uses private apps (access token) or OAuth for public apps. The CRM API covers contacts, companies, deals, and tickets. Use the Search API for complex queries. Webhook subscriptions require a valid endpoint that responds to verification challenges. ## Xero Accounting Integration Xero uses OAuth 2.0. The API base is https://api.xero.com/api.xro/2.0/. Endpoints include Invoices, Contacts, Payments, and BankTransactions. Connections are tenant-specific—multi-tenant apps must handle organization switching. Rate limits: 60 calls per minute per organization. ## PostgreSQL Best Practices Use connection pooling (PgBouncer) for web applications. Index foreign keys and frequently queried columns. Avoid N+1 queries—use JOINs or batch loading. For large tables, consider partitioning by date. Always use parameterized queries to prevent SQL injection. ## Redis Caching Patterns Use Redis for session storage, rate limiting, and cache-aside patterns. Set TTLs on cached data to prevent stale reads. Consider Redis Cluster for high availability. Monitor memory usage—Redis holds everything in RAM. ## HubSpot CRM Integration HubSpot offers a REST API and webhooks for real-time sync. Authentication uses private apps (access token) or OAuth for public apps. The CRM API covers contacts, companies, deals, and tickets. Use the Search API for complex queries. Webhook subscriptions require a valid endpoint that responds to verification challenges. ## Xero Accounting Integration Xero uses OAuth 2.0. The API base is https://api.xero.com/api.xro/2.0/. Endpoints include Invoices, Contacts, Payments, and BankTransactions. Connections are tenant-specific—multi-tenant apps must handle organization switching. Rate limits: 60 calls per minute per organization. ## PostgreSQL Best Practices Use connection pooling (PgBouncer) for web applications. Index foreign keys and frequently queried columns. Avoid N+1 queries—use JOINs or batch loading. For large tables, consider partitioning by date. Always use parameterized queries to prevent SQL injection. ## Redis Caching Patterns Use Redis for session storage, rate limiting, and cache-aside patterns. Set TTLs on cached data to prevent stale reads. Consider Redis Cluster for high availability. Monitor memory usage—Redis holds everything in RAM. ## HubSpot CRM Integration HubSpot offers a REST API and webhooks for real-time sync. Authentication uses private apps (access token) or OAuth for public apps. The CRM API covers contacts, companies, deals, and tickets. Use the Search API for complex queries. Webhook subscriptions require a valid endpoint that responds to verification challenges. ## Xero Accounting Integration Xero uses OAuth 2.0. The API base is https://api.xero.com/api.xro/2.0/. Endpoints include Invoices, Contacts, Payments, and BankTransactions. Connections are tenant-specific—multi-tenant apps must handle organization switching. Rate limits: 60 calls per minute per organization. ## PostgreSQL Best Practices Use connection pooling (PgBouncer) for web applications. Index foreign keys and frequently queried columns. Avoid N+1 queries—use JOINs or batch loading. For large tables, consider partitioning by date. Always use parameterized queries to prevent SQL injection. ## Redis Caching Patterns Use Redis for session storage, rate limiting, and cache-aside patterns. Set TTLs on cached data to prevent stale reads. Consider Redis Cluster for high availability. Monitor memory usage—Redis holds everything in RAM. ## HubSpot CRM Integration HubSpot offers a REST API and webhooks for real-time sync. Authentication uses private apps (access token) or OAuth for public apps. The CRM API covers contacts, companies, deals, and tickets. Use the Search API for complex queries. Webhook subscriptions require a valid endpoint that responds to verification challenges. ## Xero Accounting Integration Xero uses OAuth 2.0. The API base is https://api.xero.com/api.xro/2.0/. Endpoints include Invoices, Contacts, Payments, and BankTransactions. Connections are tenant-specific—multi-tenant apps must handle organization switching. Rate limits: 60 calls per minute per organization. ## PostgreSQL Best Practices Use connection pooling (PgBouncer) for web applications. Index foreign keys and frequently queried columns. Avoid N+1 queries—use JOINs or batch loading. For large tables, consider partitioning by date. Always use parameterized queries to prevent SQL injection. ## Redis Caching Patterns Use Redis for session storage, rate limiting, and cache-aside patterns. Set TTLs on cached data to prevent stale reads. Consider Redis Cluster for high availability. Monitor memory usage—Redis holds everything in RAM. ## HubSpot CRM Integration HubSpot offers a REST API and webhooks for real-time sync. Authentication uses private apps (access token) or OAuth for public apps. The CRM API covers contacts, companies, deals, and tickets. Use the Search API for complex queries. Webhook subscriptions require a valid endpoint that responds to verification challenges. ## Xero Accounting Integration Xero uses OAuth 2.0. The API base is https://api.xero.com/api.xro/2.0/. Endpoints include Invoices, Contacts, Payments, and BankTransactions. Connections are tenant-specific—multi-tenant apps must handle organization switching. Rate limits: 60 calls per minute per organization. ## PostgreSQL Best Practices Use connection pooling (PgBouncer) for web applications. Index foreign keys and frequently queried columns. Avoid N+1 queries—use JOINs or batch loading. For large tables, consider partitioning by date. Always use parameterized queries to prevent SQL injection. ## Redis Caching Patterns Use Redis for session storage, rate limiting, and cache-aside patterns. Set TTLs on cached data to prevent stale reads. Consider Redis Cluster for high availability. Monitor memory usage—Redis holds everything in RAM. ## HubSpot CRM Integration HubSpot offers a REST API and webhooks for real-time sync. Authentication uses private apps (access token) or OAuth for public apps. The CRM API covers contacts, companies, deals, and tickets. Use the Search API for complex queries. Webhook subscriptions require a valid endpoint that responds to verification challenges. ## Xero Accounting Integration Xero uses OAuth 2.0. The API base is https://api.xero.com/api.xro/2.0/. Endpoints include Invoices, Contacts, Payments, and BankTransactions. Connections are tenant-specific—multi-tenant apps must handle organization switching. Rate limits: 60 calls per minute per organization. ## PostgreSQL Best Practices Use connection pooling (PgBouncer) for web applications. Index foreign keys and frequently queried columns. Avoid N+1 queries—use JOINs or batch loading. For large tables, consider partitioning by date. Always use parameterized queries to prevent SQL injection. ## Redis Caching Patterns Use Redis for session storage, rate limiting, and cache-aside patterns. Set TTLs on cached data to prevent stale reads. Consider Redis Cluster for high availability. Monitor memory usage—Redis holds everything in RAM. ## HubSpot CRM Integration HubSpot offers a REST API and webhooks for real-time sync. Authentication uses private apps (access token) or OAuth for public apps. The CRM API covers contacts, companies, deals, and tickets. Use the Search API for complex queries. Webhook subscriptions require a valid endpoint that responds to verification challenges. ## Xero Accounting Integration Xero uses OAuth 2.0. The API base is https://api.xero.com/api.xro/2.0/. Endpoints include Invoices, Contacts, Payments, and BankTransactions. Connections are tenant-specific—multi-tenant apps must handle organization switching. Rate limits: 60 calls per minute per organization. ## PostgreSQL Best Practices Use connection pooling (PgBouncer) for web applications. Index foreign keys and frequently queried columns. Avoid N+1 queries—use JOINs or batch loading. For large tables, consider partitioning by date. Always use parameterized queries to prevent SQL injection. ## Redis Caching Patterns Use Redis for session storage, rate limiting, and cache-aside patterns. Set TTLs on cached data to prevent stale reads. Consider Redis Cluster for high availability. Monitor memory usage—Redis holds everything in RAM. ## HubSpot CRM Integration HubSpot offers a REST API and webhooks for real-time sync. Authentication uses private apps (access token) or OAuth for public apps. The CRM API covers contacts, companies, deals, and tickets. Use the Search API for complex queries. Webhook subscriptions require a valid endpoint that responds to verification challenges. ## Xero Accounting Integration Xero uses OAuth 2.0. The API base is https://api.xero.com/api.xro/2.0/. Endpoints include Invoices, Contacts, Payments, and BankTransactions. Connections are tenant-specific—multi-tenant apps must handle organization switching. Rate limits: 60 calls per minute per organization. ## PostgreSQL Best Practices Use connection pooling (PgBouncer) for web applications. Index foreign keys and frequently queried columns. Avoid N+1 queries—use JOINs or batch loading. For large tables, consider partitioning by date. Always use parameterized queries to prevent SQL injection. ## Redis Caching Patterns Use Redis for session storage, rate limiting, and cache-aside patterns. Set TTLs on cached data to prevent stale reads. Consider Redis Cluster for high availability. Monitor memory usage—Redis holds everything in RAM. ## HubSpot CRM Integration HubSpot offers a REST API and webhooks for real-time sync. Authentication uses private apps (access token) or OAuth for public apps. The CRM API covers contacts, companies, deals, and tickets. Use the Search API for complex queries. Webhook subscriptions require a valid endpoint that responds to verification challenges. ## Xero Accounting Integration Xero uses OAuth 2.0. The API base is https://api.xero.com/api.xro/2.0/. Endpoints include Invoices, Contacts, Payments, and BankTransactions. Connections are tenant-specific—multi-tenant apps must handle organization switching. Rate limits: 60 calls per minute per organization. ## PostgreSQL Best Practices Use connection pooling (PgBouncer) for web applications. Index foreign keys and frequently queried columns. Avoid N+1 queries—use JOINs or batch loading. For large tables, consider partitioning by date. Always use parameterized queries to prevent SQL injection. ## Redis Caching Patterns Use Redis for session storage, rate limiting, and cache-aside patterns. Set TTLs on cached data to prevent stale reads. Consider Redis Cluster for high availability. Monitor memory usage—Redis holds everything in RAM. ## HubSpot CRM Integration HubSpot offers a REST API and webhooks for real-time sync. Authentication uses private apps (access token) or OAuth for public apps. The CRM API covers contacts, companies, deals, and tickets. Use the Search API for complex queries. Webhook subscriptions require a valid endpoint that responds to verification challenges. ## Xero Accounting Integration Xero uses OAuth 2.0. The API base is https://api.xero.com/api.xro/2.0/. Endpoints include Invoices, Contacts, Payments, and BankTransactions. Connections are tenant-specific—multi-tenant apps must handle organization switching. Rate limits: 60 calls per minute per organization. ## PostgreSQL Best Practices Use connection pooling (PgBouncer) for web applications. Index foreign keys and frequently queried columns. Avoid N+1 queries—use JOINs or batch loading. For large tables, consider partitioning by date. Always use parameterized queries to prevent SQL injection. ## Redis Caching Patterns Use Redis for session storage, rate limiting, and cache-aside patterns. Set TTLs on cached data to prevent stale reads. Consider Redis Cluster for high availability. Monitor memory usage—Redis holds everything in RAM. ## HubSpot CRM Integration HubSpot offers a REST API and webhooks for real-time sync. Authentication uses private apps (access token) or OAuth for public apps. The CRM API covers contacts, companies, deals, and tickets. Use the Search API for complex queries. Webhook subscriptions require a valid endpoint that responds to verification challenges. ## Xero Accounting Integration Xero uses OAuth 2.0. The API base is https://api.xero.com/api.xro/2.0/. Endpoints include Invoices, Contacts, Payments, and BankTransactions. Connections are tenant-specific—multi-tenant apps must handle organization switching. Rate limits: 60 calls per minute per organization. ## PostgreSQL Best Practices Use connection pooling (PgBouncer) for web applications. Index foreign keys and frequently queried columns. Avoid N+1 queries—use JOINs or batch loading. For large tables, consider partitioning by date. Always use parameterized queries to prevent SQL injection. ## Redis Caching Patterns Use Redis for session storage, rate limiting, and cache-aside patterns. Set TTLs on cached data to prevent stale reads. Consider Redis Cluster for high availability. Monitor memory usage—Redis holds everything in RAM. ## HubSpot CRM Integration HubSpot offers a REST API and webhooks for real-time sync. Authentication uses private apps (access token) or OAuth for public apps. The CRM API covers contacts, companies, deals, and tickets. Use the Search API for complex queries. Webhook subscriptions require a valid endpoint that responds to verification challenges. ## Xero Accounting Integration Xero uses OAuth 2.0. The API base is https://api.xero.com/api.xro/2.0/. Endpoints include Invoices, Contacts, Payments, and BankTransactions. Connections are tenant-specific—multi-tenant apps must handle organization switching. Rate limits: 60 calls per minute per organization. ## PostgreSQL Best Practices Use connection pooling (PgBouncer) for web applications. Index foreign keys and frequently queried columns. Avoid N+1 queries—use JOINs or batch loading. For large tables, consider partitioning by date. Always use parameterized queries to prevent SQL injection. ## Redis Caching Patterns Use Redis for session storage, rate limiting, and cache-aside patterns. Set TTLs on cached data to prevent stale reads. Consider Redis Cluster for high availability. Monitor memory usage—Redis holds everything in RAM. ## HubSpot CRM Integration HubSpot offers a REST API and webhooks for real-time sync. Authentication uses private apps (access token) or OAuth for public apps. The CRM API covers contacts, companies, deals, and tickets. Use the Search API for complex queries. Webhook subscriptions require a valid endpoint that responds to verification challenges. ## Xero Accounting Integration Xero uses OAuth 2.0. The API base is https://api.xero.com/api.xro/2.0/. Endpoints include Invoices, Contacts, Payments, and BankTransactions. Connections are tenant-specific—multi-tenant apps must handle organization switching. Rate limits: 60 calls per minute per organization. ## PostgreSQL Best Practices Use connection pooling (PgBouncer) for web applications. Index foreign keys and frequently queried columns. Avoid N+1 queries—use JOINs or batch loading. For large tables, consider partitioning by date. Always use parameterized queries to prevent SQL injection. ## Redis Caching Patterns Use Redis for session storage, rate limiting, and cache-aside patterns. Set TTLs on cached data to prevent stale reads. Consider Redis Cluster for high availability. Monitor memory usage—Redis holds everything in RAM. ## HubSpot CRM Integration HubSpot offers a REST API and webhooks for real-time sync. Authentication uses private apps (access token) or OAuth for public apps. The CRM API covers contacts, companies, deals, and tickets. Use the Search API for complex queries. Webhook subscriptions require a valid endpoint that responds to verification challenges. ## Xero Accounting Integration Xero uses OAuth 2.0. The API base is https://api.xero.com/api.xro/2.0/. Endpoints include Invoices, Contacts, Payments, and BankTransactions. Connections are tenant-specific—multi-tenant apps must handle organization switching. Rate limits: 60 calls per minute per organization. ## PostgreSQL Best Practices Use connection pooling (PgBouncer) for web applications. Index foreign keys and frequently queried columns. Avoid N+1 queries—use JOINs or batch loading. For large tables, consider partitioning by date. Always use parameterized queries to prevent SQL injection. ## Redis Caching Patterns Use Redis for session storage, rate limiting, and cache-aside patterns. Set TTLs on cached data to prevent stale reads. Consider Redis Cluster for high availability. Monitor memory usage—Redis holds everything in RAM. ## HubSpot CRM Integration HubSpot offers a REST API and webhooks for real-time sync. Authentication uses private apps (access token) or OAuth for public apps. The CRM API covers contacts, companies, deals, and tickets. Use the Search API for complex queries. Webhook subscriptions require a valid endpoint that responds to verification challenges. ## Xero Accounting Integration Xero uses OAuth 2.0. The API base is https://api.xero.com/api.xro/2.0/. Endpoints include Invoices, Contacts, Payments, and BankTransactions. Connections are tenant-specific—multi-tenant apps must handle organization switching. Rate limits: 60 calls per minute per organization. ## PostgreSQL Best Practices Use connection pooling (PgBouncer) for web applications. Index foreign keys and frequently queried columns. Avoid N+1 queries—use JOINs or batch loading. For large tables, consider partitioning by date. Always use parameterized queries to prevent SQL injection. ## Redis Caching Patterns Use Redis for session storage, rate limiting, and cache-aside patterns. Set TTLs on cached data to prevent stale reads. Consider Redis Cluster for high availability. Monitor memory usage—Redis holds everything in RAM. ## HubSpot CRM Integration HubSpot offers a REST API and webhooks for real-time sync. Authentication uses private apps (access token) or OAuth for public apps. The CRM API covers contacts, companies, deals, and tickets. Use the Search API for complex queries. Webhook subscriptions require a valid endpoint that responds to verification challenges. ## Xero Accounting Integration Xero uses OAuth 2.0. The API base is https://api.xero.com/api.xro/2.0/. Endpoints include Invoices, Contacts, Payments, and BankTransactions. Connections are tenant-specific—multi-tenant apps must handle organization switching. Rate limits: 60 calls per minute per organization. ## PostgreSQL Best Practices Use connection pooling (PgBouncer) for web applications. Index foreign keys and frequently queried columns. Avoid N+1 queries—use JOINs or batch loading. For large tables, consider partitioning by date. Always use parameterized queries to prevent SQL injection. ## Redis Caching Patterns Use Redis for session storage, rate limiting, and cache-aside patterns. Set TTLs on cached data to prevent stale reads. Consider Redis Cluster for high availability. Monitor memory usage—Redis holds everything in RAM. ## HubSpot CRM Integration HubSpot offers a REST API and webhooks for real-time sync. Authentication uses private apps (access token) or OAuth for public apps. The CRM API covers contacts, companies, deals, and tickets. Use the Search API for complex queries. Webhook subscriptions require a valid endpoint that responds to verification challenges. ## Xero Accounting Integration Xero uses OAuth 2.0. The API base is https://api.xero.com/api.xro/2.0/. Endpoints include Invoices, Contacts, Payments, and BankTransactions. Connections are tenant-specific—multi-tenant apps must handle organization switching. Rate limits: 60 calls per minute per organization. ## PostgreSQL Best Practices Use connection pooling (PgBouncer) for web applications. Index foreign keys and frequently queried columns. Avoid N+1 queries—use JOINs or batch loading. For large tables, consider partitioning by date. Always use parameterized queries to prevent SQL injection. ## Redis Caching Patterns Use Redis for session storage, rate limiting, and cache-aside patterns. Set TTLs on cached data to prevent stale reads. Consider Redis Cluster for high availability. Monitor memory usage—Redis holds everything in RAM. ## HubSpot CRM Integration HubSpot offers a REST API and webhooks for real-time sync. Authentication uses private apps (access token) or OAuth for public apps. The CRM API covers contacts, companies, deals, and tickets. Use the Search API for complex queries. Webhook subscriptions require a valid endpoint that responds to verification challenges. ## Xero Accounting Integration Xero uses OAuth 2.0. The API base is https://api.xero.com/api.xro/2.0/. Endpoints include Invoices, Contacts, Payments, and BankTransactions. Connections are tenant-specific—multi-tenant apps must handle organization switching. Rate limits: 60 calls per minute per organization. ## PostgreSQL Best Practices Use connection pooling (PgBouncer) for web applications. Index foreign keys and frequently queried columns. Avoid N+1 queries—use JOINs or batch loading. For large tables, consider partitioning by date. Always use parameterized queries to prevent SQL injection. ## Redis Caching Patterns Use Redis for session storage, rate limiting, and cache-aside patterns. Set TTLs on cached data to prevent stale reads. Consider Redis Cluster for high availability. Monitor memory usage—Redis holds everything in RAM. ## HubSpot CRM Integration HubSpot offers a REST API and webhooks for real-time sync. Authentication uses private apps (access token) or OAuth for public apps. The CRM API covers contacts, companies, deals, and tickets. Use the Search API for complex queries. Webhook subscriptions require a valid endpoint that responds to verification challenges. ## Xero Accounting Integration Xero uses OAuth 2.0. The API base is https://api.xero.com/api.xro/2.0/. Endpoints include Invoices, Contacts, Payments, and BankTransactions. Connections are tenant-specific—multi-tenant apps must handle organization switching. Rate limits: 60 calls per minute per organization. ## PostgreSQL Best Practices Use connection pooling (PgBouncer) for web applications. Index foreign keys and frequently queried columns. Avoid N+1 queries—use JOINs or batch loading. For large tables, consider partitioning by date. Always use parameterized queries to prevent SQL injection. ## Redis Caching Patterns Use Redis for session storage, rate limiting, and cache-aside patterns. Set TTLs on cached data to prevent stale reads. Consider Redis Cluster for high availability. Monitor memory usage—Redis holds everything in RAM. ## HubSpot CRM Integration HubSpot offers a REST API and webhooks for real-time sync. Authentication uses private apps (access token) or OAuth for public apps. The CRM API covers contacts, companies, deals, and tickets. Use the Search API for complex queries. Webhook subscriptions require a valid endpoint that responds to verification challenges. ## Xero Accounting Integration Xero uses OAuth 2.0. The API base is https://api.xero.com/api.xro/2.0/. Endpoints include Invoices, Contacts, Payments, and BankTransactions. Connections are tenant-specific—multi-tenant apps must handle organization switching. Rate limits: 60 calls per minute per organization. ## PostgreSQL Best Practices Use connection pooling (PgBouncer) for web applications. Index foreign keys and frequently queried columns. Avoid N+1 queries—use JOINs or batch loading. For large tables, consider partitioning by date. Always use parameterized queries to prevent SQL injection. ## Redis Caching Patterns Use Redis for session storage, rate limiting, and cache-aside patterns. Set TTLs on cached data to prevent stale reads. Consider Redis Cluster for high availability. Monitor memory usage—Redis holds everything in RAM. ## HubSpot CRM Integration HubSpot offers a REST API and webhooks for real-time sync. Authentication uses private apps (access token) or OAuth for public apps. The CRM API covers contacts, companies, deals, and tickets. Use the Search API for complex queries. Webhook subscriptions require a valid endpoint that responds to verification challenges. ## Xero Accounting Integration Xero uses OAuth 2.0. The API base is https://api.xero.com/api.xro/2.0/. Endpoints include Invoices, Contacts, Payments, and BankTransactions. Connections are tenant-specific—multi-tenant apps must handle organization switching. Rate limits: 60 calls per minute per organization. ## PostgreSQL Best Practices Use connection pooling (PgBouncer) for web applications. Index foreign keys and frequently queried columns. Avoid N+1 queries—use JOINs or batch loading. For large tables, consider partitioning by date. Always use parameterized queries to prevent SQL injection. ## Redis Caching Patterns Use Redis for session storage, rate limiting, and cache-aside patterns. Set TTLs on cached data to prevent stale reads. Consider Redis Cluster for high availability. Monitor memory usage—Redis holds everything in RAM. ## HubSpot CRM Integration HubSpot offers a REST API and webhooks for real-time sync. Authentication uses private apps (access token) or OAuth for public apps. The CRM API covers contacts, companies, deals, and tickets. Use the Search API for complex queries. Webhook subscriptions require a valid endpoint that responds to verification challenges. ## Xero Accounting Integration Xero uses OAuth 2.0. The API base is https://api.xero.com/api.xro/2.0/. Endpoints include Invoices, Contacts, Payments, and BankTransactions. Connections are tenant-specific—multi-tenant apps must handle organization switching. Rate limits: 60 calls per minute per organization. ## PostgreSQL Best Practices Use connection pooling (PgBouncer) for web applications. Index foreign keys and frequently queried columns. Avoid N+1 queries—use JOINs or batch loading. For large tables, consider partitioning by date. Always use parameterized queries to prevent SQL injection. ## Redis Caching Patterns Use Redis for session storage, rate limiting, and cache-aside patterns. Set TTLs on cached data to prevent stale reads. Consider Redis Cluster for high availability. Monitor memory usage—Redis holds everything in RAM. ## HubSpot CRM Integration HubSpot offers a REST API and webhooks for real-time sync. Authentication uses private apps (access token) or OAuth for public apps. The CRM API covers contacts, companies, deals, and tickets. Use the Search API for complex queries. Webhook subscriptions require a valid endpoint that responds to verification challenges. ## Xero Accounting Integration Xero uses OAuth 2.0. The API base is https://api.xero.com/api.xro/2.0/. Endpoints include Invoices, Contacts, Payments, and BankTransactions. Connections are tenant-specific—multi-tenant apps must handle organization switching. Rate limits: 60 calls per minute per organization. ## PostgreSQL Best Practices Use connection pooling (PgBouncer) for web applications. Index foreign keys and frequently queried columns. Avoid N+1 queries—use JOINs or batch loading. For large tables, consider partitioning by date. Always use parameterized queries to prevent SQL injection. ## Redis Caching Patterns Use Redis for session storage, rate limiting, and cache-aside patterns. Set TTLs on cached data to prevent stale reads. Consider Redis Cluster for high availability. Monitor memory usage—Redis holds everything in RAM. ## HubSpot CRM Integration HubSpot offers a REST API and webhooks for real-time sync. Authentication uses private apps (access token) or OAuth for public apps. The CRM API covers contacts, companies, deals, and tickets. Use the Search API for complex queries. Webhook subscriptions require a valid endpoint that responds to verification challenges. ## Xero Accounting Integration Xero uses OAuth 2.0. The API base is https://api.xero.com/api.xro/2.0/. Endpoints include Invoices, Contacts, Payments, and BankTransactions. Connections are tenant-specific—multi-tenant apps must handle organization switching. Rate limits: 60 calls per minute per organization. ## PostgreSQL Best Practices Use connection pooling (PgBouncer) for web applications. Index foreign keys and frequently queried columns. Avoid N+1 queries—use JOINs or batch loading. For large tables, consider partitioning by date. Always use parameterized queries to prevent SQL injection. ## Redis Caching Patterns Use Redis for session storage, rate limiting, and cache-aside patterns. Set TTLs on cached data to prevent stale reads. Consider Redis Cluster for high availability. Monitor memory usage—Redis holds everything in RAM. ## HubSpot CRM Integration HubSpot offers a REST API and webhooks for real-time sync. Authentication uses private apps (access token) or OAuth for public apps. The CRM API covers contacts, companies, deals, and tickets. Use the Search API for complex queries. Webhook subscriptions require a valid endpoint that responds to verification challenges. ## Xero Accounting Integration Xero uses OAuth 2.0. The API base is https://api.xero.com/api.xro/2.0/. Endpoints include Invoices, Contacts, Payments, and BankTransactions. Connections are tenant-specific—multi-tenant apps must handle organization switching. Rate limits: 60 calls per minute per organization. ## PostgreSQL Best Practices Use connection pooling (PgBouncer) for web applications. Index foreign keys and frequently queried columns. Avoid N+1 queries—use JOINs or batch loading. For large tables, consider partitioning by date. Always use parameterized queries to prevent SQL injection. ## Redis Caching Patterns Use Redis for session storage, rate limiting, and cache-aside patterns. Set TTLs on cached data to prevent stale reads. Consider Redis Cluster for high availability. Monitor memory usage—Redis holds everything in RAM. ## HubSpot CRM Integration HubSpot offers a REST API and webhooks for real-time sync. Authentication uses private apps (access token) or OAuth for public apps. The CRM API covers contacts, companies, deals, and tickets. Use the Search API for complex queries. Webhook subscriptions require a valid endpoint that responds to verification challenges. ## Xero Accounting Integration Xero uses OAuth 2.0. The API base is https://api.xero.com/api.xro/2.0/. Endpoints include Invoices, Contacts, Payments, and BankTransactions. Connections are tenant-specific—multi-tenant apps must handle organization switching. Rate limits: 60 calls per minute per organization. ## PostgreSQL Best Practices Use connection pooling (PgBouncer) for web applications. Index foreign keys and frequently queried columns. Avoid N+1 queries—use JOINs or batch loading. For large tables, consider partitioning by date. Always use parameterized queries to prevent SQL injection. ## Redis Caching Patterns Use Redis for session storage, rate limiting, and cache-aside patterns. Set TTLs on cached data to prevent stale reads. Consider Redis Cluster for high availability. Monitor memory usage—Redis holds everything in RAM. ## HubSpot CRM Integration HubSpot offers a REST API and webhooks for real-time sync. Authentication uses private apps (access token) or OAuth for public apps. The CRM API covers contacts, companies, deals, and tickets. Use the Search API for complex queries. Webhook subscriptions require a valid endpoint that responds to verification challenges. ## Xero Accounting Integration Xero uses OAuth 2.0. The API base is https://api.xero.com/api.xro/2.0/. Endpoints include Invoices, Contacts, Payments, and BankTransactions. Connections are tenant-specific—multi-tenant apps must handle organization switching. Rate limits: 60 calls per minute per organization. ## PostgreSQL Best Practices Use connection pooling (PgBouncer) for web applications. Index foreign keys and frequently queried columns. Avoid N+1 queries—use JOINs or batch loading. For large tables, consider partitioning by date. Always use parameterized queries to prevent SQL injection. ## Redis Caching Patterns Use Redis for session storage, rate limiting, and cache-aside patterns. Set TTLs on cached data to prevent stale reads. Consider Redis Cluster for high availability. Monitor memory usage—Redis holds everything in RAM. ## HubSpot CRM Integration HubSpot offers a REST API and webhooks for real-time sync. Authentication uses private apps (access token) or OAuth for public apps. The CRM API covers contacts, companies, deals, and tickets. Use the Search API for complex queries. Webhook subscriptions require a valid endpoint that responds to verification challenges. ## Xero Accounting Integration Xero uses OAuth 2.0. The API base is https://api.xero.com/api.xro/2.0/. Endpoints include Invoices, Contacts, Payments, and BankTransactions. Connections are tenant-specific—multi-tenant apps must handle organization switching. Rate limits: 60 calls per minute per organization. ## PostgreSQL Best Practices Use connection pooling (PgBouncer) for web applications. Index foreign keys and frequently queried columns. Avoid N+1 queries—use JOINs or batch loading. For large tables, consider partitioning by date. Always use parameterized queries to prevent SQL injection. ## Redis Caching Patterns Use Redis for session storage, rate limiting, and cache-aside patterns. Set TTLs on cached data to prevent stale reads. Consider Redis Cluster for high availability. Monitor memory usage—Redis holds everything in RAM. ## HubSpot CRM Integration HubSpot offers a REST API and webhooks for real-time sync. Authentication uses private apps (access token) or OAuth for public apps. The CRM API covers contacts, companies, deals, and tickets. Use the Search API for complex queries. Webhook subscriptions require a valid endpoint that responds to verification challenges. ## Xero Accounting Integration Xero uses OAuth 2.0. The API base is https://api.xero.com/api.xro/2.0/. Endpoints include Invoices, Contacts, Payments, and BankTransactions. Connections are tenant-specific—multi-tenant apps must handle organization switching. Rate limits: 60 calls per minute per organization. ## PostgreSQL Best Practices Use connection pooling (PgBouncer) for web applications. Index foreign keys and frequently queried columns. Avoid N+1 queries—use JOINs or batch loading. For large tables, consider partitioning by date. Always use parameterized queries to prevent SQL injection. ## Redis Caching Patterns Use Redis for session storage, rate limiting, and cache-aside patterns. Set TTLs on cached data to prevent stale reads. Consider Redis Cluster for high availability. Monitor memory usage—Redis holds everything in RAM. ## HubSpot CRM Integration HubSpot offers a REST API and webhooks for real-time sync. Authentication uses private apps (access token) or OAuth for public apps. The CRM API covers contacts, companies, deals, and tickets. Use the Search API for complex queries. Webhook subscriptions require a valid endpoint that responds to verification challenges. ## Xero Accounting Integration Xero uses OAuth 2.0. The API base is https://api.xero.com/api.xro/2.0/. Endpoints include Invoices, Contacts, Payments, and BankTransactions. Connections are tenant-specific—multi-tenant apps must handle organization switching. Rate limits: 60 calls per minute per organization. ## PostgreSQL Best Practices Use connection pooling (PgBouncer) for web applications. Index foreign keys and frequently queried columns. Avoid N+1 queries—use JOINs or batch loading. For large tables, consider partitioning by date. Always use parameterized queries to prevent SQL injection. ## Redis Caching Patterns Use Redis for session storage, rate limiting, and cache-aside patterns. Set TTLs on cached data to prevent stale reads. Consider Redis Cluster for high availability. Monitor memory usage—Redis holds everything in RAM. ## HubSpot CRM Integration HubSpot offers a REST API and webhooks for real-time sync. Authentication uses private apps (access token) or OAuth for public apps. The CRM API covers contacts, companies, deals, and tickets. Use the Search API for complex queries. Webhook subscriptions require a valid endpoint that responds to verification challenges. ## Xero Accounting Integration Xero uses OAuth 2.0. The API base is https://api.xero.com/api.xro/2.0/. Endpoints include Invoices, Contacts, Payments, and BankTransactions. Connections are tenant-specific—multi-tenant apps must handle organization switching. Rate limits: 60 calls per minute per organization. ## PostgreSQL Best Practices Use connection pooling (PgBouncer) for web applications. Index foreign keys and frequently queried columns. Avoid N+1 queries—use JOINs or batch loading. For large tables, consider partitioning by date. Always use parameterized queries to prevent SQL injection. ## Redis Caching Patterns Use Redis for session storage, rate limiting, and cache-aside patterns. Set TTLs on cached data to prevent stale reads. Consider Redis Cluster for high availability. Monitor memory usage—Redis holds everything in RAM. ## HubSpot CRM Integration HubSpot offers a REST API and webhooks for real-time sync. Authentication uses private apps (access token) or OAuth for public apps. The CRM API covers contacts, companies, deals, and tickets. Use the Search API for complex queries. Webhook subscriptions require a valid endpoint that responds to verification challenges. ## Xero Accounting Integration Xero uses OAuth 2.0. The API base is https://api.xero.com/api.xro/2.0/. Endpoints include Invoices, Contacts, Payments, and BankTransactions. Connections are tenant-specific—multi-tenant apps must handle organization switching. Rate limits: 60 calls per minute per organization. ## PostgreSQL Best Practices Use connection pooling (PgBouncer) for web applications. Index foreign keys and frequently queried columns. Avoid N+1 queries—use JOINs or batch loading. For large tables, consider partitioning by date. Always use parameterized queries to prevent SQL injection. ## Redis Caching Patterns Use Redis for session storage, rate limiting, and cache-aside patterns. Set TTLs on cached data to prevent stale reads. Consider Redis Cluster for high availability. Monitor memory usage—Redis holds everything in RAM. ## HubSpot CRM Integration HubSpot offers a REST API and webhooks for real-time sync. Authentication uses private apps (access token) or OAuth for public apps. The CRM API covers contacts, companies, deals, and tickets. Use the Search API for complex queries. Webhook subscriptions require a valid endpoint that responds to verification challenges. ## Xero Accounting Integration Xero uses OAuth 2.0. The API base is https://api.xero.com/api.xro/2.0/. Endpoints include Invoices, Contacts, Payments, and BankTransactions. Connections are tenant-specific—multi-tenant apps must handle organization switching. Rate limits: 60 calls per minute per organization. ## PostgreSQL Best Practices Use connection pooling (PgBouncer) for web applications. Index foreign keys and frequently queried columns. Avoid N+1 queries—use JOINs or batch loading. For large tables, consider partitioning by date. Always use parameterized queries to prevent SQL injection. ## Redis Caching Patterns Use Redis for session storage, rate limiting, and cache-aside patterns. Set TTLs on cached data to prevent stale reads. Consider Redis Cluster for high availability. Monitor memory usage—Redis holds everything in RAM. ## HubSpot CRM Integration HubSpot offers a REST API and webhooks for real-time sync. Authentication uses private apps (access token) or OAuth for public apps. The CRM API covers contacts, companies, deals, and tickets. Use the Search API for complex queries. Webhook subscriptions require a valid endpoint that responds to verification challenges. ## Xero Accounting Integration Xero uses OAuth 2.0. The API base is https://api.xero.com/api.xro/2.0/. Endpoints include Invoices, Contacts, Payments, and BankTransactions. Connections are tenant-specific—multi-tenant apps must handle organization switching. Rate limits: 60 calls per minute per organization. ## PostgreSQL Best Practices Use connection pooling (PgBouncer) for web applications. Index foreign keys and frequently queried columns. Avoid N+1 queries—use JOINs or batch loading. For large tables, consider partitioning by date. Always use parameterized queries to prevent SQL injection. ## Redis Caching Patterns Use Redis for session storage, rate limiting, and cache-aside patterns. Set TTLs on cached data to prevent stale reads. Consider Redis Cluster for high availability. Monitor memory usage—Redis holds everything in RAM. ## HubSpot CRM Integration HubSpot offers a REST API and webhooks for real-time sync. Authentication uses private apps (access token) or OAuth for public apps. The CRM API covers contacts, companies, deals, and tickets. Use the Search API for complex queries. Webhook subscriptions require a valid endpoint that responds to verification challenges. ## Xero Accounting Integration Xero uses OAuth 2.0. The API base is https://api.xero.com/api.xro/2.0/. Endpoints include Invoices, Contacts, Payments, and BankTransactions. Connections are tenant-specific—multi-tenant apps must handle organization switching. Rate limits: 60 calls per minute per organization. ## PostgreSQL Best Practices Use connection pooling (PgBouncer) for web applications. Index foreign keys and frequently queried columns. Avoid N+1 queries—use JOINs or batch loading. For large tables, consider partitioning by date. Always use parameterized queries to prevent SQL injection. ## Redis Caching Patterns Use Redis for session storage, rate limiting, and cache-aside patterns. Set TTLs on cached data to prevent stale reads. Consider Redis Cluster for high availability. Monitor memory usage—Redis holds everything in RAM. ## HubSpot CRM Integration HubSpot offers a REST API and webhooks for real-time sync. Authentication uses private apps (access token) or OAuth for public apps. The CRM API covers contacts, companies, deals, and tickets. Use the Search API for complex queries. Webhook subscriptions require a valid endpoint that responds to verification challenges. ## Xero Accounting Integration Xero uses OAuth 2.0. The API base is https://api.xero.com/api.xro/2.0/. Endpoints include Invoices, Contacts, Payments, and BankTransactions. Connections are tenant-specific—multi-tenant apps must handle organization switching. Rate limits: 60 calls per minute per organization. ## PostgreSQL Best Practices Use connection pooling (PgBouncer) for web applications. Index foreign keys and frequently queried columns. Avoid N+1 queries—use JOINs or batch loading. For large tables, consider partitioning by date. Always use parameterized queries to prevent SQL injection. ## Redis Caching Patterns Use Redis for session storage, rate limiting, and cache-aside patterns. Set TTLs on cached data to prevent stale reads. Consider Redis Cluster for high availability. Monitor memory usage—Redis holds everything in RAM. ## HubSpot CRM Integration HubSpot offers a REST API and webhooks for real-time sync. Authentication uses private apps (access token) or OAuth for public apps. The CRM API covers contacts, companies, deals, and tickets. Use the Search API for complex queries. Webhook subscriptions require a valid endpoint that responds to verification challenges. ## Xero Accounting Integration Xero uses OAuth 2.0. The API base is https://api.xero.com/api.xro/2.0/. Endpoints include Invoices, Contacts, Payments, and BankTransactions. Connections are tenant-specific—multi-tenant apps must handle organization switching. Rate limits: 60 calls per minute per organization. ## PostgreSQL Best Practices Use connection pooling (PgBouncer) for web applications. Index foreign keys and frequently queried columns. Avoid N+1 queries—use JOINs or batch loading. For large tables, consider partitioning by date. Always use parameterized queries to prevent SQL injection. ## Redis Caching Patterns Use Redis for session storage, rate limiting, and cache-aside patterns. Set TTLs on cached data to prevent stale reads. Consider Redis Cluster for high availability. Monitor memory usage—Redis holds everything in RAM. ## HubSpot CRM Integration HubSpot offers a REST API and webhooks for real-time sync. Authentication uses private apps (access token) or OAuth for public apps. The CRM API covers contacts, companies, deals, and tickets. Use the Search API for complex queries. Webhook subscriptions require a valid endpoint that responds to verification challenges. ## Xero Accounting Integration Xero uses OAuth 2.0. The API base is https://api.xero.com/api.xro/2.0/. Endpoints include Invoices, Contacts, Payments, and BankTransactions. Connections are tenant-specific—multi-tenant apps must handle organization switching. Rate limits: 60 calls per minute per organization. ## PostgreSQL Best Practices Use connection pooling (PgBouncer) for web applications. Index foreign keys and frequently queried columns. Avoid N+1 queries—use JOINs or batch loading. For large tables, consider partitioning by date. Always use parameterized queries to prevent SQL injection. ## Redis Caching Patterns Use Redis for session storage, rate limiting, and cache-aside patterns. Set TTLs on cached data to prevent stale reads. Consider Redis Cluster for high availability. Monitor memory usage—Redis holds everything in RAM. ## HubSpot CRM Integration HubSpot offers a REST API and webhooks for real-time sync. Authentication uses private apps (access token) or OAuth for public apps. The CRM API covers contacts, companies, deals, and tickets. Use the Search API for complex queries. Webhook subscriptions require a valid endpoint that responds to verification challenges. ## Xero Accounting Integration Xero uses OAuth 2.0. The API base is https://api.xero.com/api.xro/2.0/. Endpoints include Invoices, Contacts, Payments, and BankTransactions. Connections are tenant-specific—multi-tenant apps must handle organization switching. Rate limits: 60 calls per minute per organization. ## PostgreSQL Best Practices Use connection pooling (PgBouncer) for web applications. Index foreign keys and frequently queried columns. Avoid N+1 queries—use JOINs or batch loading. For large tables, consider partitioning by date. Always use parameterized queries to prevent SQL injection. ## Redis Caching Patterns Use Redis for session storage, rate limiting, and cache-aside patterns. Set TTLs on cached data to prevent stale reads. Consider Redis Cluster for high availability. Monitor memory usage—Redis holds everything in RAM. ## HubSpot CRM Integration HubSpot offers a REST API and webhooks for real-time sync. Authentication uses private apps (access token) or OAuth for public apps. The CRM API covers contacts, companies, deals, and tickets. Use the Search API for complex queries. Webhook subscriptions require a valid endpoint that responds to verification challenges. ## Xero Accounting Integration Xero uses OAuth 2.0. The API base is https://api.xero.com/api.xro/2.0/. Endpoints include Invoices, Contacts, Payments, and BankTransactions. Connections are tenant-specific—multi-tenant apps must handle organization switching. Rate limits: 60 calls per minute per organization. ## PostgreSQL Best Practices Use connection pooling (PgBouncer) for web applications. Index foreign keys and frequently queried columns. Avoid N+1 queries—use JOINs or batch loading. For large tables, consider partitioning by date. Always use parameterized queries to prevent SQL injection. ## Redis Caching Patterns Use Redis for session storage, rate limiting, and cache-aside patterns. Set TTLs on cached data to prevent stale reads. Consider Redis Cluster for high availability. Monitor memory usage—Redis holds everything in RAM. ## HubSpot CRM Integration HubSpot offers a REST API and webhooks for real-time sync. Authentication uses private apps (access token) or OAuth for public apps. The CRM API covers contacts, companies, deals, and tickets. Use the Search API for complex queries. Webhook subscriptions require a valid endpoint that responds to verification challenges. ## Xero Accounting Integration Xero uses OAuth 2.0. The API base is https://api.xero.com/api.xro/2.0/. Endpoints include Invoices, Contacts, Payments, and BankTransactions. Connections are tenant-specific—multi-tenant apps must handle organization switching. Rate limits: 60 calls per minute per organization. ## PostgreSQL Best Practices Use connection pooling (PgBouncer) for web applications. Index foreign keys and frequently queried columns. Avoid N+1 queries—use JOINs or batch loading. For large tables, consider partitioning by date. Always use parameterized queries to prevent SQL injection. ## Redis Caching Patterns Use Redis for session storage, rate limiting, and cache-aside patterns. Set TTLs on cached data to prevent stale reads. Consider Redis Cluster for high availability. Monitor memory usage—Redis holds everything in RAM. ## HubSpot CRM Integration HubSpot offers a REST API and webhooks for real-time sync. Authentication uses private apps (access token) or OAuth for public apps. The CRM API covers contacts, companies, deals, and tickets. Use the Search API for complex queries. Webhook subscriptions require a valid endpoint that responds to verification challenges. ## Xero Accounting Integration Xero uses OAuth 2.0. The API base is https://api.xero.com/api.xro/2.0/. Endpoints include Invoices, Contacts, Payments, and BankTransactions. Connections are tenant-specific—multi-tenant apps must handle organization switching. Rate limits: 60 calls per minute per organization. ## PostgreSQL Best Practices Use connection pooling (PgBouncer) for web applications. Index foreign keys and frequently queried columns. Avoid N+1 queries—use JOINs or batch loading. For large tables, consider partitioning by date. Always use parameterized queries to prevent SQL injection. ## Redis Caching Patterns Use Redis for session storage, rate limiting, and cache-aside patterns. Set TTLs on cached data to prevent stale reads. Consider Redis Cluster for high availability. Monitor memory usage—Redis holds everything in RAM. ## HubSpot CRM Integration HubSpot offers a REST API and webhooks for real-time sync. Authentication uses private apps (access token) or OAuth for public apps. The CRM API covers contacts, companies, deals, and tickets. Use the Search API for complex queries. Webhook subscriptions require a valid endpoint that responds to verification challenges. ## Xero Accounting Integration Xero uses OAuth 2.0. The API base is https://api.xero.com/api.xro/2.0/. Endpoints include Invoices, Contacts, Payments, and BankTransactions. Connections are tenant-specific—multi-tenant apps must handle organization switching. Rate limits: 60 calls per minute per organization. ## PostgreSQL Best Practices Use connection pooling (PgBouncer) for web applications. Index foreign keys and frequently queried columns. Avoid N+1 queries—use JOINs or batch loading. For large tables, consider partitioning by date. Always use parameterized queries to prevent SQL injection. ## Redis Caching Patterns Use Redis for session storage, rate limiting, and cache-aside patterns. Set TTLs on cached data to prevent stale reads. Consider Redis Cluster for high availability. Monitor memory usage—Redis holds everything in RAM. ## HubSpot CRM Integration HubSpot offers a REST API and webhooks for real-time sync. Authentication uses private apps (access token) or OAuth for public apps. The CRM API covers contacts, companies, deals, and tickets. Use the Search API for complex queries. Webhook subscriptions require a valid endpoint that responds to verification challenges. ## Xero Accounting Integration Xero uses OAuth 2.0. The API base is https://api.xero.com/api.xro/2.0/. Endpoints include Invoices, Contacts, Payments, and BankTransactions. Connections are tenant-specific—multi-tenant apps must handle organization switching. Rate limits: 60 calls per minute per organization. ## PostgreSQL Best Practices Use connection pooling (PgBouncer) for web applications. Index foreign keys and frequently queried columns. Avoid N+1 queries—use JOINs or batch loading. For large tables, consider partitioning by date. Always use parameterized queries to prevent SQL injection. ## Redis Caching Patterns Use Redis for session storage, rate limiting, and cache-aside patterns. Set TTLs on cached data to prevent stale reads. Consider Redis Cluster for high availability. Monitor memory usage—Redis holds everything in RAM. ## HubSpot CRM Integration HubSpot offers a REST API and webhooks for real-time sync. Authentication uses private apps (access token) or OAuth for public apps. The CRM API covers contacts, companies, deals, and tickets. Use the Search API for complex queries. Webhook subscriptions require a valid endpoint that responds to verification challenges. ## Xero Accounting Integration Xero uses OAuth 2.0. The API base is https://api.xero.com/api.xro/2.0/. Endpoints include Invoices, Contacts, Payments, and BankTransactions. Connections are tenant-specific—multi-tenant apps must handle organization switching. Rate limits: 60 calls per minute per organization. ## PostgreSQL Best Practices Use connection pooling (PgBouncer) for web applications. Index foreign keys and frequently queried columns. Avoid N+1 queries—use JOINs or batch loading. For large tables, consider partitioning by date. Always use parameterized queries to prevent SQL injection. ## Redis Caching Patterns Use Redis for session storage, rate limiting, and cache-aside patterns. Set TTLs on cached data to prevent stale reads. Consider Redis Cluster for high availability. Monitor memory usage—Redis holds everything in RAM. ## HubSpot CRM Integration HubSpot offers a REST API and webhooks for real-time sync. Authentication uses private apps (access token) or OAuth for public apps. The CRM API covers contacts, companies, deals, and tickets. Use the Search API for complex queries. Webhook subscriptions require a valid endpoint that responds to verification challenges. ## Xero Accounting Integration Xero uses OAuth 2.0. The API base is https://api.xero.com/api.xro/2.0/. Endpoints include Invoices, Contacts, Payments, and BankTransactions. Connections are tenant-specific—multi-tenant apps must handle organization switching. Rate limits: 60 calls per minute per organization. ## PostgreSQL Best Practices Use connection pooling (PgBouncer) for web applications. Index foreign keys and frequently queried columns. Avoid N+1 queries—use JOINs or batch loading. For large tables, consider partitioning by date. Always use parameterized queries to prevent SQL injection. ## Redis Caching Patterns Use Redis for session storage, rate limiting, and cache-aside patterns. Set TTLs on cached data to prevent stale reads. Consider Redis Cluster for high availability. Monitor memory usage—Redis holds everything in RAM. ## HubSpot CRM Integration HubSpot offers a REST API and webhooks for real-time sync. Authentication uses private apps (access token) or OAuth for public apps. The CRM API covers contacts, companies, deals, and tickets. Use the Search API for complex queries. Webhook subscriptions require a valid endpoint that responds to verification challenges. ## Xero Accounting Integration Xero uses OAuth 2.0. The API base is https://api.xero.com/api.xro/2.0/. Endpoints include Invoices, Contacts, Payments, and BankTransactions. Connections are tenant-specific—multi-tenant apps must handle organization switching. Rate limits: 60 calls per minute per organization. ## PostgreSQL Best Practices Use connection pooling (PgBouncer) for web applications. Index foreign keys and frequently queried columns. Avoid N+1 queries—use JOINs or batch loading. For large tables, consider partitioning by date. Always use parameterized queries to prevent SQL injection. ## Redis Caching Patterns Use Redis for session storage, rate limiting, and cache-aside patterns. Set TTLs on cached data to prevent stale reads. Consider Redis Cluster for high availability. Monitor memory usage—Redis holds everything in RAM. ## HubSpot CRM Integration HubSpot offers a REST API and webhooks for real-time sync. Authentication uses private apps (access token) or OAuth for public apps. The CRM API covers contacts, companies, deals, and tickets. Use the Search API for complex queries. Webhook subscriptions require a valid endpoint that responds to verification challenges. ## Xero Accounting Integration Xero uses OAuth 2.0. The API base is https://api.xero.com/api.xro/2.0/. Endpoints include Invoices, Contacts, Payments, and BankTransactions. Connections are tenant-specific—multi-tenant apps must handle organization switching. Rate limits: 60 calls per minute per organization. ## PostgreSQL Best Practices Use connection pooling (PgBouncer) for web applications. Index foreign keys and frequently queried columns. Avoid N+1 queries—use JOINs or batch loading. For large tables, consider partitioning by date. Always use parameterized queries to prevent SQL injection. ## Redis Caching Patterns Use Redis for session storage, rate limiting, and cache-aside patterns. Set TTLs on cached data to prevent stale reads. Consider Redis Cluster for high availability. Monitor memory usage—Redis holds everything in RAM. ## HubSpot CRM Integration HubSpot offers a REST API and webhooks for real-time sync. Authentication uses private apps (access token) or OAuth for public apps. The CRM API covers contacts, companies, deals, and tickets. Use the Search API for complex queries. Webhook subscriptions require a valid endpoint that responds to verification challenges. ## Xero Accounting Integration Xero uses OAuth 2.0. The API base is https://api.xero.com/api.xro/2.0/. Endpoints include Invoices, Contacts, Payments, and BankTransactions. Connections are tenant-specific—multi-tenant apps must handle organization switching. Rate limits: 60 calls per minute per organization. ## PostgreSQL Best Practices Use connection pooling (PgBouncer) for web applications. Index foreign keys and frequently queried columns. Avoid N+1 queries—use JOINs or batch loading. For large tables, consider partitioning by date. Always use parameterized queries to prevent SQL injection. ## Redis Caching Patterns Use Redis for session storage, rate limiting, and cache-aside patterns. Set TTLs on cached data to prevent stale reads. Consider Redis Cluster for high availability. Monitor memory usage—Redis holds everything in RAM. ## HubSpot CRM Integration HubSpot offers a REST API and webhooks for real-time sync. Authentication uses private apps (access token) or OAuth for public apps. The CRM API covers contacts, companies, deals, and tickets. Use the Search API for complex queries. Webhook subscriptions require a valid endpoint that responds to verification challenges. ## Xero Accounting Integration Xero uses OAuth 2.0. The API base is https://api.xero.com/api.xro/2.0/. Endpoints include Invoices, Contacts, Payments, and BankTransactions. Connections are tenant-specific—multi-tenant apps must handle organization switching. Rate limits: 60 calls per minute per organization. ## PostgreSQL Best Practices Use connection pooling (PgBouncer) for web applications. Index foreign keys and frequently queried columns. Avoid N+1 queries—use JOINs or batch loading. For large tables, consider partitioning by date. Always use parameterized queries to prevent SQL injection. ## Redis Caching Patterns Use Redis for session storage, rate limiting, and cache-aside patterns. Set TTLs on cached data to prevent stale reads. Consider Redis Cluster for high availability. Monitor memory usage—Redis holds everything in RAM. ## HubSpot CRM Integration HubSpot offers a REST API and webhooks for real-time sync. Authentication uses private apps (access token) or OAuth for public apps. The CRM API covers contacts, companies, deals, and tickets. Use the Search API for complex queries. Webhook subscriptions require a valid endpoint that responds to verification challenges. ## Xero Accounting Integration Xero uses OAuth 2.0. The API base is https://api.xero.com/api.xro/2.0/. Endpoints include Invoices, Contacts, Payments, and BankTransactions. Connections are tenant-specific—multi-tenant apps must handle organization switching. Rate limits: 60 calls per minute per organization. ## PostgreSQL Best Practices Use connection pooling (PgBouncer) for web applications. Index foreign keys and frequently queried columns. Avoid N+1 queries—use JOINs or batch loading. For large tables, consider partitioning by date. Always use parameterized queries to prevent SQL injection. ## Redis Caching Patterns Use Redis for session storage, rate limiting, and cache-aside patterns. Set TTLs on cached data to prevent stale reads. Consider Redis Cluster for high availability. Monitor memory usage—Redis holds everything in RAM. ## HubSpot CRM Integration HubSpot offers a REST API and webhooks for real-time sync. Authentication uses private apps (access token) or OAuth for public apps. The CRM API covers contacts, companies, deals, and tickets. Use the Search API for complex queries. Webhook subscriptions require a valid endpoint that responds to verification challenges. ## Xero Accounting Integration Xero uses OAuth 2.0. The API base is https://api.xero.com/api.xro/2.0/. Endpoints include Invoices, Contacts, Payments, and BankTransactions. Connections are tenant-specific—multi-tenant apps must handle organization switching. Rate limits: 60 calls per minute per organization. ## PostgreSQL Best Practices Use connection pooling (PgBouncer) for web applications. Index foreign keys and frequently queried columns. Avoid N+1 queries—use JOINs or batch loading. For large tables, consider partitioning by date. Always use parameterized queries to prevent SQL injection. ## Redis Caching Patterns Use Redis for session storage, rate limiting, and cache-aside patterns. Set TTLs on cached data to prevent stale reads. Consider Redis Cluster for high availability. Monitor memory usage—Redis holds everything in RAM. ## HubSpot CRM Integration HubSpot offers a REST API and webhooks for real-time sync. Authentication uses private apps (access token) or OAuth for public apps. The CRM API covers contacts, companies, deals, and tickets. Use the Search API for complex queries. Webhook subscriptions require a valid endpoint that responds to verification challenges. ## Xero Accounting Integration Xero uses OAuth 2.0. The API base is https://api.xero.com/api.xro/2.0/. Endpoints include Invoices, Contacts, Payments, and BankTransactions. Connections are tenant-specific—multi-tenant apps must handle organization switching. Rate limits: 60 calls per minute per organization. ## PostgreSQL Best Practices Use connection pooling (PgBouncer) for web applications. Index foreign keys and frequently queried columns. Avoid N+1 queries—use JOINs or batch loading. For large tables, consider partitioning by date. Always use parameterized queries to prevent SQL injection. ## Redis Caching Patterns Use Redis for session storage, rate limiting, and cache-aside patterns. Set TTLs on cached data to prevent stale reads. Consider Redis Cluster for high availability. Monitor memory usage—Redis holds everything in RAM. ## HubSpot CRM Integration HubSpot offers a REST API and webhooks for real-time sync. Authentication uses private apps (access token) or OAuth for public apps. The CRM API covers contacts, companies, deals, and tickets. Use the Search API for complex queries. Webhook subscriptions require a valid endpoint that responds to verification challenges. ## Xero Accounting Integration Xero uses OAuth 2.0. The API base is https://api.xero.com/api.xro/2.0/. Endpoints include Invoices, Contacts, Payments, and BankTransactions. Connections are tenant-specific—multi-tenant apps must handle organization switching. Rate limits: 60 calls per minute per organization. ## PostgreSQL Best Practices Use connection pooling (PgBouncer) for web applications. Index foreign keys and frequently queried columns. Avoid N+1 queries—use JOINs or batch loading. For large tables, consider partitioning by date. Always use parameterized queries to prevent SQL injection. ## Redis Caching Patterns Use Redis for session storage, rate limiting, and cache-aside patterns. Set TTLs on cached data to prevent stale reads. Consider Redis Cluster for high availability. Monitor memory usage—Redis holds everything in RAM. ## HubSpot CRM Integration HubSpot offers a REST API and webhooks for real-time sync. Authentication uses private apps (access token) or OAuth for public apps. The CRM API covers contacts, companies, deals, and tickets. Use the Search API for complex queries. Webhook subscriptions require a valid endpoint that responds to verification challenges. ## Xero Accounting Integration Xero uses OAuth 2.0. The API base is https://api.xero.com/api.xro/2.0/. Endpoints include Invoices, Contacts, Payments, and BankTransactions. Connections are tenant-specific—multi-tenant apps must handle organization switching. Rate limits: 60 calls per minute per organization. ## PostgreSQL Best Practices Use connection pooling (PgBouncer) for web applications. Index foreign keys and frequently queried columns. Avoid N+1 queries—use JOINs or batch loading. For large tables, consider partitioning by date. Always use parameterized queries to prevent SQL injection. ## Redis Caching Patterns Use Redis for session storage, rate limiting, and cache-aside patterns. Set TTLs on cached data to prevent stale reads. Consider Redis Cluster for high availability. Monitor memory usage—Redis holds everything in RAM. ## HubSpot CRM Integration HubSpot offers a REST API and webhooks for real-time sync. Authentication uses private apps (access token) or OAuth for public apps. The CRM API covers contacts, companies, deals, and tickets. Use the Search API for complex queries. Webhook subscriptions require a valid endpoint that responds to verification challenges. ## Xero Accounting Integration Xero uses OAuth 2.0. The API base is https://api.xero.com/api.xro/2.0/. Endpoints include Invoices, Contacts, Payments, and BankTransactions. Connections are tenant-specific—multi-tenant apps must handle organization switching. Rate limits: 60 calls per minute per organization. ## PostgreSQL Best Practices Use connection pooling (PgBouncer) for web applications. Index foreign keys and frequently queried columns. Avoid N+1 queries—use JOINs or batch loading. For large tables, consider partitioning by date. Always use parameterized queries to prevent SQL injection. ## Redis Caching Patterns Use Redis for session storage, rate limiting, and cache-aside patterns. Set TTLs on cached data to prevent stale reads. Consider Redis Cluster for high availability. Monitor memory usage—Redis holds everything in RAM. ## HubSpot CRM Integration HubSpot offers a REST API and webhooks for real-time sync. Authentication uses private apps (access token) or OAuth for public apps. The CRM API covers contacts, companies, deals, and tickets. Use the Search API for complex queries. Webhook subscriptions require a valid endpoint that responds to verification challenges. ## Xero Accounting Integration Xero uses OAuth 2.0. The API base is https://api.xero.com/api.xro/2.0/. Endpoints include Invoices, Contacts, Payments, and BankTransactions. Connections are tenant-specific—multi-tenant apps must handle organization switching. Rate limits: 60 calls per minute per organization. ## PostgreSQL Best Practices Use connection pooling (PgBouncer) for web applications. Index foreign keys and frequently queried columns. Avoid N+1 queries—use JOINs or batch loading. For large tables, consider partitioning by date. Always use parameterized queries to prevent SQL injection. ## Redis Caching Patterns Use Redis for session storage, rate limiting, and cache-aside patterns. Set TTLs on cached data to prevent stale reads. Consider Redis Cluster for high availability. Monitor memory usage—Redis holds everything in RAM. ## HubSpot CRM Integration HubSpot offers a REST API and webhooks for real-time sync. Authentication uses private apps (access token) or OAuth for public apps. The CRM API covers contacts, companies, deals, and tickets. Use the Search API for complex queries. Webhook subscriptions require a valid endpoint that responds to verification challenges. ## Xero Accounting Integration Xero uses OAuth 2.0. The API base is https://api.xero.com/api.xro/2.0/. Endpoints include Invoices, Contacts, Payments, and BankTransactions. Connections are tenant-specific—multi-tenant apps must handle organization switching. Rate limits: 60 calls per minute per organization. ## PostgreSQL Best Practices Use connection pooling (PgBouncer) for web applications. Index foreign keys and frequently queried columns. Avoid N+1 queries—use JOINs or batch loading. For large tables, consider partitioning by date. Always use parameterized queries to prevent SQL injection. ## Redis Caching Patterns Use Redis for session storage, rate limiting, and cache-aside patterns. Set TTLs on cached data to prevent stale reads. Consider Redis Cluster for high availability. Monitor memory usage—Redis holds everything in RAM. ## HubSpot CRM Integration HubSpot offers a REST API and webhooks for real-time sync. Authentication uses private apps (access token) or OAuth for public apps. The CRM API covers contacts, companies, deals, and tickets. Use the Search API for complex queries. Webhook subscriptions require a valid endpoint that responds to verification challenges. ## Xero Accounting Integration Xero uses OAuth 2.0. The API base is https://api.xero.com/api.xro/2.0/. Endpoints include Invoices, Contacts, Payments, and BankTransactions. Connections are tenant-specific—multi-tenant apps must handle organization switching. Rate limits: 60 calls per minute per organization. ## PostgreSQL Best Practices Use connection pooling (PgBouncer) for web applications. Index foreign keys and frequently queried columns. Avoid N+1 queries—use JOINs or batch loading. For large tables, consider partitioning by date. Always use parameterized queries to prevent SQL injection. ## Redis Caching Patterns Use Redis for session storage, rate limiting, and cache-aside patterns. Set TTLs on cached data to prevent stale reads. Consider Redis Cluster for high availability. Monitor memory usage—Redis holds everything in RAM. ## HubSpot CRM Integration HubSpot offers a REST API and webhooks for real-time sync. Authentication uses private apps (access token) or OAuth for public apps. The CRM API covers contacts, companies, deals, and tickets. Use the Search API for complex queries. Webhook subscriptions require a valid endpoint that responds to verification challenges. ## Xero Accounting Integration Xero uses OAuth 2.0. The API base is https://api.xero.com/api.xro/2.0/. Endpoints include Invoices, Contacts, Payments, and BankTransactions. Connections are tenant-specific—multi-tenant apps must handle organization switching. Rate limits: 60 calls per minute per organization. ## PostgreSQL Best Practices Use connection pooling (PgBouncer) for web applications. Index foreign keys and frequently queried columns. Avoid N+1 queries—use JOINs or batch loading. For large tables, consider partitioning by date. Always use parameterized queries to prevent SQL injection. ## Redis Caching Patterns Use Redis for session storage, rate limiting, and cache-aside patterns. Set TTLs on cached data to prevent stale reads. Consider Redis Cluster for high availability. Monitor memory usage—Redis holds everything in RAM. ## HubSpot CRM Integration HubSpot offers a REST API and webhooks for real-time sync. Authentication uses private apps (access token) or OAuth for public apps. The CRM API covers contacts, companies, deals, and tickets. Use the Search API for complex queries. Webhook subscriptions require a valid endpoint that responds to verification challenges. ## Xero Accounting Integration Xero uses OAuth 2.0. The API base is https://api.xero.com/api.xro/2.0/. Endpoints include Invoices, Contacts, Payments, and BankTransactions. Connections are tenant-specific—multi-tenant apps must handle organization switching. Rate limits: 60 calls per minute per organization. ## PostgreSQL Best Practices Use connection pooling (PgBouncer) for web applications. Index foreign keys and frequently queried columns. Avoid N+1 queries—use JOINs or batch loading. For large tables, consider partitioning by date. Always use parameterized queries to prevent SQL injection. ## Redis Caching Patterns Use Redis for session storage, rate limiting, and cache-aside patterns. Set TTLs on cached data to prevent stale reads. Consider Redis Cluster for high availability. Monitor memory usage—Redis holds everything in RAM. ## HubSpot CRM Integration HubSpot offers a REST API and webhooks for real-time sync. Authentication uses private apps (access token) or OAuth for public apps. The CRM API covers contacts, companies, deals, and tickets. Use the Search API for complex queries. Webhook subscriptions require a valid endpoint that responds to verification challenges. ## Xero Accounting Integration Xero uses OAuth 2.0. The API base is https://api.xero.com/api.xro/2.0/. Endpoints include Invoices, Contacts, Payments, and BankTransactions. Connections are tenant-specific—multi-tenant apps must handle organization switching. Rate limits: 60 calls per minute per organization. ## PostgreSQL Best Practices Use connection pooling (PgBouncer) for web applications. Index foreign keys and frequently queried columns. Avoid N+1 queries—use JOINs or batch loading. For large tables, consider partitioning by date. Always use parameterized queries to prevent SQL injection. ## Redis Caching Patterns Use Redis for session storage, rate limiting, and cache-aside patterns. Set TTLs on cached data to prevent stale reads. Consider Redis Cluster for high availability. Monitor memory usage—Redis holds everything in RAM. ## HubSpot CRM Integration HubSpot offers a REST API and webhooks for real-time sync. Authentication uses private apps (access token) or OAuth for public apps. The CRM API covers contacts, companies, deals, and tickets. Use the Search API for complex queries. Webhook subscriptions require a valid endpoint that responds to verification challenges. ## Xero Accounting Integration Xero uses OAuth 2.0. The API base is https://api.xero.com/api.xro/2.0/. Endpoints include Invoices, Contacts, Payments, and BankTransactions. Connections are tenant-specific—multi-tenant apps must handle organization switching. Rate limits: 60 calls per minute per organization. ## PostgreSQL Best Practices Use connection pooling (PgBouncer) for web applications. Index foreign keys and frequently queried columns. Avoid N+1 queries—use JOINs or batch loading. For large tables, consider partitioning by date. Always use parameterized queries to prevent SQL injection. ## Redis Caching Patterns Use Redis for session storage, rate limiting, and cache-aside patterns. Set TTLs on cached data to prevent stale reads. Consider Redis Cluster for high availability. Monitor memory usage—Redis holds everything in RAM. ## HubSpot CRM Integration HubSpot offers a REST API and webhooks for real-time sync. Authentication uses private apps (access token) or OAuth for public apps. The CRM API covers contacts, companies, deals, and tickets. Use the Search API for complex queries. Webhook subscriptions require a valid endpoint that responds to verification challenges. ## Xero Accounting Integration Xero uses OAuth 2.0. The API base is https://api.xero.com/api.xro/2.0/. Endpoints include Invoices, Contacts, Payments, and BankTransactions. Connections are tenant-specific—multi-tenant apps must handle organization switching. Rate limits: 60 calls per minute per organization. ## PostgreSQL Best Practices Use connection pooling (PgBouncer) for web applications. Index foreign keys and frequently queried columns. Avoid N+1 queries—use JOINs or batch loading. For large tables, consider partitioning by date. Always use parameterized queries to prevent SQL injection. ## Redis Caching Patterns Use Redis for session storage, rate limiting, and cache-aside patterns. Set TTLs on cached data to prevent stale reads. Consider Redis Cluster for high availability. Monitor memory usage—Redis holds everything in RAM. ## HubSpot CRM Integration HubSpot offers a REST API and webhooks for real-time sync. Authentication uses private apps (access token) or OAuth for public apps. The CRM API covers contacts, companies, deals, and tickets. Use the Search API for complex queries. Webhook subscriptions require a valid endpoint that responds to verification challenges. ## Xero Accounting Integration Xero uses OAuth 2.0. The API base is https://api.xero.com/api.xro/2.0/. Endpoints include Invoices, Contacts, Payments, and BankTransactions. Connections are tenant-specific—multi-tenant apps must handle organization switching. Rate limits: 60 calls per minute per organization. ## PostgreSQL Best Practices Use connection pooling (PgBouncer) for web applications. Index foreign keys and frequently queried columns. Avoid N+1 queries—use JOINs or batch loading. For large tables, consider partitioning by date. Always use parameterized queries to prevent SQL injection. ## Redis Caching Patterns Use Redis for session storage, rate limiting, and cache-aside patterns. Set TTLs on cached data to prevent stale reads. Consider Redis Cluster for high availability. Monitor memory usage—Redis holds everything in RAM. ## HubSpot CRM Integration HubSpot offers a REST API and webhooks for real-time sync. Authentication uses private apps (access token) or OAuth for public apps. The CRM API covers contacts, companies, deals, and tickets. Use the Search API for complex queries. Webhook subscriptions require a valid endpoint that responds to verification challenges. ## Xero Accounting Integration Xero uses OAuth 2.0. The API base is https://api.xero.com/api.xro/2.0/. Endpoints include Invoices, Contacts, Payments, and BankTransactions. Connections are tenant-specific—multi-tenant apps must handle organization switching. Rate limits: 60 calls per minute per organization. ## PostgreSQL Best Practices Use connection pooling (PgBouncer) for web applications. Index foreign keys and frequently queried columns. Avoid N+1 queries—use JOINs or batch loading. For large tables, consider partitioning by date. Always use parameterized queries to prevent SQL injection. ## Redis Caching Patterns Use Redis for session storage, rate limiting, and cache-aside patterns. Set TTLs on cached data to prevent stale reads. Consider Redis Cluster for high availability. Monitor memory usage—Redis holds everything in RAM. ## HubSpot CRM Integration HubSpot offers a REST API and webhooks for real-time sync. Authentication uses private apps (access token) or OAuth for public apps. The CRM API covers contacts, companies, deals, and tickets. Use the Search API for complex queries. Webhook subscriptions require a valid endpoint that responds to verification challenges. ## Xero Accounting Integration Xero uses OAuth 2.0. The API base is https://api.xero.com/api.xro/2.0/. Endpoints include Invoices, Contacts, Payments, and BankTransactions. Connections are tenant-specific—multi-tenant apps must handle organization switching. Rate limits: 60 calls per minute per organization. ## PostgreSQL Best Practices Use connection pooling (PgBouncer) for web applications. Index foreign keys and frequently queried columns. Avoid N+1 queries—use JOINs or batch loading. For large tables, consider partitioning by date. Always use parameterized queries to prevent SQL injection. ## Redis Caching Patterns Use Redis for session storage, rate limiting, and cache-aside patterns. Set TTLs on cached data to prevent stale reads. Consider Redis Cluster for high availability. Monitor memory usage—Redis holds everything in RAM. ## HubSpot CRM Integration HubSpot offers a REST API and webhooks for real-time sync. Authentication uses private apps (access token) or OAuth for public apps. The CRM API covers contacts, companies, deals, and tickets. Use the Search API for complex queries. Webhook subscriptions require a valid endpoint that responds to verification challenges. ## Xero Accounting Integration Xero uses OAuth 2.0. The API base is https://api.xero.com/api.xro/2.0/. Endpoints include Invoices, Contacts, Payments, and BankTransactions. Connections are tenant-specific—multi-tenant apps must handle organization switching. Rate limits: 60 calls per minute per organization. ## PostgreSQL Best Practices Use connection pooling (PgBouncer) for web applications. Index foreign keys and frequently queried columns. Avoid N+1 queries—use JOINs or batch loading. For large tables, consider partitioning by date. Always use parameterized queries to prevent SQL injection. ## Redis Caching Patterns Use Redis for session storage, rate limiting, and cache-aside patterns. Set TTLs on cached data to prevent stale reads. Consider Redis Cluster for high availability. Monitor memory usage—Redis holds everything in RAM. ## HubSpot CRM Integration HubSpot offers a REST API and webhooks for real-time sync. Authentication uses private apps (access token) or OAuth for public apps. The CRM API covers contacts, companies, deals, and tickets. Use the Search API for complex queries. Webhook subscriptions require a valid endpoint that responds to verification challenges. ## Xero Accounting Integration Xero uses OAuth 2.0. The API base is https://api.xero.com/api.xro/2.0/. Endpoints include Invoices, Contacts, Payments, and BankTransactions. Connections are tenant-specific—multi-tenant apps must handle organization switching. Rate limits: 60 calls per minute per organization. ## PostgreSQL Best Practices Use connection pooling (PgBouncer) for web applications. Index foreign keys and frequently queried columns. Avoid N+1 queries—use JOINs or batch loading. For large tables, consider partitioning by date. Always use parameterized queries to prevent SQL injection. ## Redis Caching Patterns Use Redis for session storage, rate limiting, and cache-aside patterns. Set TTLs on cached data to prevent stale reads. Consider Redis Cluster for high availability. Monitor memory usage—Redis holds everything in RAM. ## HubSpot CRM Integration HubSpot offers a REST API and webhooks for real-time sync. Authentication uses private apps (access token) or OAuth for public apps. The CRM API covers contacts, companies, deals, and tickets. Use the Search API for complex queries. Webhook subscriptions require a valid endpoint that responds to verification challenges. ## Xero Accounting Integration Xero uses OAuth 2.0. The API base is https://api.xero.com/api.xro/2.0/. Endpoints include Invoices, Contacts, Payments, and BankTransactions. Connections are tenant-specific—multi-tenant apps must handle organization switching. Rate limits: 60 calls per minute per organization. ## PostgreSQL Best Practices Use connection pooling (PgBouncer) for web applications. Index foreign keys and frequently queried columns. Avoid N+1 queries—use JOINs or batch loading. For large tables, consider partitioning by date. Always use parameterized queries to prevent SQL injection. ## Redis Caching Patterns Use Redis for session storage, rate limiting, and cache-aside patterns. Set TTLs on cached data to prevent stale reads. Consider Redis Cluster for high availability. Monitor memory usage—Redis holds everything in RAM. ## HubSpot CRM Integration HubSpot offers a REST API and webhooks for real-time sync. Authentication uses private apps (access token) or OAuth for public apps. The CRM API covers contacts, companies, deals, and tickets. Use the Search API for complex queries. Webhook subscriptions require a valid endpoint that responds to verification challenges. ## Xero Accounting Integration Xero uses OAuth 2.0. The API base is https://api.xero.com/api.xro/2.0/. Endpoints include Invoices, Contacts, Payments, and BankTransactions. Connections are tenant-specific—multi-tenant apps must handle organization switching. Rate limits: 60 calls per minute per organization. ## PostgreSQL Best Practices Use connection pooling (PgBouncer) for web applications. Index foreign keys and frequently queried columns. Avoid N+1 queries—use JOINs or batch loading. For large tables, consider partitioning by date. Always use parameterized queries to prevent SQL injection. ## Redis Caching Patterns Use Redis for session storage, rate limiting, and cache-aside patterns. Set TTLs on cached data to prevent stale reads. Consider Redis Cluster for high availability. Monitor memory usage—Redis holds everything in RAM. ## HubSpot CRM Integration HubSpot offers a REST API and webhooks for real-time sync. Authentication uses private apps (access token) or OAuth for public apps. The CRM API covers contacts, companies, deals, and tickets. Use the Search API for complex queries. Webhook subscriptions require a valid endpoint that responds to verification challenges. ## Xero Accounting Integration Xero uses OAuth 2.0. The API base is https://api.xero.com/api.xro/2.0/. Endpoints include Invoices, Contacts, Payments, and BankTransactions. Connections are tenant-specific—multi-tenant apps must handle organization switching. Rate limits: 60 calls per minute per organization. ## PostgreSQL Best Practices Use connection pooling (PgBouncer) for web applications. Index foreign keys and frequently queried columns. Avoid N+1 queries—use JOINs or batch loading. For large tables, consider partitioning by date. Always use parameterized queries to prevent SQL injection. ## Redis Caching Patterns Use Redis for session storage, rate limiting, and cache-aside patterns. Set TTLs on cached data to prevent stale reads. Consider Redis Cluster for high availability. Monitor memory usage—Redis holds everything in RAM. ## HubSpot CRM Integration HubSpot offers a REST API and webhooks for real-time sync. Authentication uses private apps (access token) or OAuth for public apps. The CRM API covers contacts, companies, deals, and tickets. Use the Search API for complex queries. Webhook subscriptions require a valid endpoint that responds to verification challenges. ## Xero Accounting Integration Xero uses OAuth 2.0. The API base is https://api.xero.com/api.xro/2.0/. Endpoints include Invoices, Contacts, Payments, and BankTransactions. Connections are tenant-specific—multi-tenant apps must handle organization switching. Rate limits: 60 calls per minute per organization. ## PostgreSQL Best Practices Use connection pooling (PgBouncer) for web applications. Index foreign keys and frequently queried columns. Avoid N+1 queries—use JOINs or batch loading. For large tables, consider partitioning by date. Always use parameterized queries to prevent SQL injection. ## Redis Caching Patterns Use Redis for session storage, rate limiting, and cache-aside patterns. Set TTLs on cached data to prevent stale reads. Consider Redis Cluster for high availability. Monitor memory usage—Redis holds everything in RAM. ## HubSpot CRM Integration HubSpot offers a REST API and webhooks for real-time sync. Authentication uses private apps (access token) or OAuth for public apps. The CRM API covers contacts, companies, deals, and tickets. Use the Search API for complex queries. Webhook subscriptions require a valid endpoint that responds to verification challenges. ## Xero Accounting Integration Xero uses OAuth 2.0. The API base is https://api.xero.com/api.xro/2.0/. Endpoints include Invoices, Contacts, Payments, and BankTransactions. Connections are tenant-specific—multi-tenant apps must handle organization switching. Rate limits: 60 calls per minute per organization. ## PostgreSQL Best Practices Use connection pooling (PgBouncer) for web applications. Index foreign keys and frequently queried columns. Avoid N+1 queries—use JOINs or batch loading. For large tables, consider partitioning by date. Always use parameterized queries to prevent SQL injection. ## Redis Caching Patterns Use Redis for session storage, rate limiting, and cache-aside patterns. Set TTLs on cached data to prevent stale reads. Consider Redis Cluster for high availability. Monitor memory usage—Redis holds everything in RAM. ## HubSpot CRM Integration HubSpot offers a REST API and webhooks for real-time sync. Authentication uses private apps (access token) or OAuth for public apps. The CRM API covers contacts, companies, deals, and tickets. Use the Search API for complex queries. Webhook subscriptions require a valid endpoint that responds to verification challenges. ## Xero Accounting Integration Xero uses OAuth 2.0. The API base is https://api.xero.com/api.xro/2.0/. Endpoints include Invoices, Contacts, Payments, and BankTransactions. Connections are tenant-specific—multi-tenant apps must handle organization switching. Rate limits: 60 calls per minute per organization. ## PostgreSQL Best Practices Use connection pooling (PgBouncer) for web applications. Index foreign keys and frequently queried columns. Avoid N+1 queries—use JOINs or batch loading. For large tables, consider partitioning by date. Always use parameterized queries to prevent SQL injection. ## Redis Caching Patterns Use Redis for session storage, rate limiting, and cache-aside patterns. Set TTLs on cached data to prevent stale reads. Consider Redis Cluster for high availability. Monitor memory usage—Redis holds everything in RAM. ## HubSpot CRM Integration HubSpot offers a REST API and webhooks for real-time sync. Authentication uses private apps (access token) or OAuth for public apps. The CRM API covers contacts, companies, deals, and tickets. Use the Search API for complex queries. Webhook subscriptions require a valid endpoint that responds to verification challenges. ## Xero Accounting Integration Xero uses OAuth 2.0. The API base is https://api.xero.com/api.xro/2.0/. Endpoints include Invoices, Contacts, Payments, and BankTransactions. Connections are tenant-specific—multi-tenant apps must handle organization switching. Rate limits: 60 calls per minute per organization. ## PostgreSQL Best Practices Use connection pooling (PgBouncer) for web applications. Index foreign keys and frequently queried columns. Avoid N+1 queries—use JOINs or batch loading. For large tables, consider partitioning by date. Always use parameterized queries to prevent SQL injection. ## Redis Caching Patterns Use Redis for session storage, rate limiting, and cache-aside patterns. Set TTLs on cached data to prevent stale reads. Consider Redis Cluster for high availability. Monitor memory usage—Redis holds everything in RAM. ## HubSpot CRM Integration HubSpot offers a REST API and webhooks for real-time sync. Authentication uses private apps (access token) or OAuth for public apps. The CRM API covers contacts, companies, deals, and tickets. Use the Search API for complex queries. Webhook subscriptions require a valid endpoint that responds to verification challenges. ## Xero Accounting Integration Xero uses OAuth 2.0. The API base is https://api.xero.com/api.xro/2.0/. Endpoints include Invoices, Contacts, Payments, and BankTransactions. Connections are tenant-specific—multi-tenant apps must handle organization switching. Rate limits: 60 calls per minute per organization. ## PostgreSQL Best Practices Use connection pooling (PgBouncer) for web applications. Index foreign keys and frequently queried columns. Avoid N+1 queries—use JOINs or batch loading. For large tables, consider partitioning by date. Always use parameterized queries to prevent SQL injection. ## Redis Caching Patterns Use Redis for session storage, rate limiting, and cache-aside patterns. Set TTLs on cached data to prevent stale reads. Consider Redis Cluster for high availability. Monitor memory usage—Redis holds everything in RAM. ## HubSpot CRM Integration HubSpot offers a REST API and webhooks for real-time sync. Authentication uses private apps (access token) or OAuth for public apps. The CRM API covers contacts, companies, deals, and tickets. Use the Search API for complex queries. Webhook subscriptions require a valid endpoint that responds to verification challenges. ## Xero Accounting Integration Xero uses OAuth 2.0. The API base is https://api.xero.com/api.xro/2.0/. Endpoints include Invoices, Contacts, Payments, and BankTransactions. Connections are tenant-specific—multi-tenant apps must handle organization switching. Rate limits: 60 calls per minute per organization. ## PostgreSQL Best Practices Use connection pooling (PgBouncer) for web applications. Index foreign keys and frequently queried columns. Avoid N+1 queries—use JOINs or batch loading. For large tables, consider partitioning by date. Always use parameterized queries to prevent SQL injection. ## Redis Caching Patterns Use Redis for session storage, rate limiting, and cache-aside patterns. Set TTLs on cached data to prevent stale reads. Consider Redis Cluster for high availability. Monitor memory usage—Redis holds everything in RAM. ## HubSpot CRM Integration HubSpot offers a REST API and webhooks for real-time sync. Authentication uses private apps (access token) or OAuth for public apps. The CRM API covers contacts, companies, deals, and tickets. Use the Search API for complex queries. Webhook subscriptions require a valid endpoint that responds to verification challenges. ## Xero Accounting Integration Xero uses OAuth 2.0. The API base is https://api.xero.com/api.xro/2.0/. Endpoints include Invoices, Contacts, Payments, and BankTransactions. Connections are tenant-specific—multi-tenant apps must handle organization switching. Rate limits: 60 calls per minute per organization. ## PostgreSQL Best Practices Use connection pooling (PgBouncer) for web applications. Index foreign keys and frequently queried columns. Avoid N+1 queries—use JOINs or batch loading. For large tables, consider partitioning by date. Always use parameterized queries to prevent SQL injection. ## Redis Caching Patterns Use Redis for session storage, rate limiting, and cache-aside patterns. Set TTLs on cached data to prevent stale reads. Consider Redis Cluster for high availability. Monitor memory usage—Redis holds everything in RAM. ## HubSpot CRM Integration HubSpot offers a REST API and webhooks for real-time sync. Authentication uses private apps (access token) or OAuth for public apps. The CRM API covers contacts, companies, deals, and tickets. Use the Search API for complex queries. Webhook subscriptions require a valid endpoint that responds to verification challenges. ## Xero Accounting Integration Xero uses OAuth 2.0. The API base is https://api.xero.com/api.xro/2.0/. Endpoints include Invoices, Contacts, Payments, and BankTransactions. Connections are tenant-specific—multi-tenant apps must handle organization switching. Rate limits: 60 calls per minute per organization. ## PostgreSQL Best Practices Use connection pooling (PgBouncer) for web applications. Index foreign keys and frequently queried columns. Avoid N+1 queries—use JOINs or batch loading. For large tables, consider partitioning by date. Always use parameterized queries to prevent SQL injection. ## Redis Caching Patterns Use Redis for session storage, rate limiting, and cache-aside patterns. Set TTLs on cached data to prevent stale reads. Consider Redis Cluster for high availability. Monitor memory usage—Redis holds everything in RAM. ## HubSpot CRM Integration HubSpot offers a REST API and webhooks for real-time sync. Authentication uses private apps (access token) or OAuth for public apps. The CRM API covers contacts, companies, deals, and tickets. Use the Search API for complex queries. Webhook subscriptions require a valid endpoint that responds to verification challenges. ## Xero Accounting Integration Xero uses OAuth 2.0. The API base is https://api.xero.com/api.xro/2.0/. Endpoints include Invoices, Contacts, Payments, and BankTransactions. Connections are tenant-specific—multi-tenant apps must handle organization switching. Rate limits: 60 calls per minute per organization. ## PostgreSQL Best Practices Use connection pooling (PgBouncer) for web applications. Index foreign keys and frequently queried columns. Avoid N+1 queries—use JOINs or batch loading. For large tables, consider partitioning by date. Always use parameterized queries to prevent SQL injection. ## Redis Caching Patterns Use Redis for session storage, rate limiting, and cache-aside patterns. Set TTLs on cached data to prevent stale reads. Consider Redis Cluster for high availability. Monitor memory usage—Redis holds everything in RAM. ## HubSpot CRM Integration HubSpot offers a REST API and webhooks for real-time sync. Authentication uses private apps (access token) or OAuth for public apps. The CRM API covers contacts, companies, deals, and tickets. Use the Search API for complex queries. Webhook subscriptions require a valid endpoint that responds to verification challenges. ## Xero Accounting Integration Xero uses OAuth 2.0. The API base is https://api.xero.com/api.xro/2.0/. Endpoints include Invoices, Contacts, Payments, and BankTransactions. Connections are tenant-specific—multi-tenant apps must handle organization switching. Rate limits: 60 calls per minute per organization. ## PostgreSQL Best Practices Use connection pooling (PgBouncer) for web applications. Index foreign keys and frequently queried columns. Avoid N+1 queries—use JOINs or batch loading. For large tables, consider partitioning by date. Always use parameterized queries to prevent SQL injection. ## Redis Caching Patterns Use Redis for session storage, rate limiting, and cache-aside patterns. Set TTLs on cached data to prevent stale reads. Consider Redis Cluster for high availability. Monitor memory usage—Redis holds everything in RAM. ## HubSpot CRM Integration HubSpot offers a REST API and webhooks for real-time sync. Authentication uses private apps (access token) or OAuth for public apps. The CRM API covers contacts, companies, deals, and tickets. Use the Search API for complex queries. Webhook subscriptions require a valid endpoint that responds to verification challenges. ## Xero Accounting Integration Xero uses OAuth 2.0. The API base is https://api.xero.com/api.xro/2.0/. Endpoints include Invoices, Contacts, Payments, and BankTransactions. Connections are tenant-specific—multi-tenant apps must handle organization switching. Rate limits: 60 calls per minute per organization. ## PostgreSQL Best Practices Use connection pooling (PgBouncer) for web applications. Index foreign keys and frequently queried columns. Avoid N+1 queries—use JOINs or batch loading. For large tables, consider partitioning by date. Always use parameterized queries to prevent SQL injection. ## Redis Caching Patterns Use Redis for session storage, rate limiting, and cache-aside patterns. Set TTLs on cached data to prevent stale reads. Consider Redis Cluster for high availability. Monitor memory usage—Redis holds everything in RAM. ## HubSpot CRM Integration HubSpot offers a REST API and webhooks for real-time sync. Authentication uses private apps (access token) or OAuth for public apps. The CRM API covers contacts, companies, deals, and tickets. Use the Search API for complex queries. Webhook subscriptions require a valid endpoint that responds to verification challenges. ## Xero Accounting Integration Xero uses OAuth 2.0. The API base is https://api.xero.com/api.xro/2.0/. Endpoints include Invoices, Contacts, Payments, and BankTransactions. Connections are tenant-specific—multi-tenant apps must handle organization switching. Rate limits: 60 calls per minute per organization. ## PostgreSQL Best Practices Use connection pooling (PgBouncer) for web applications. Index foreign keys and frequently queried columns. Avoid N+1 queries—use JOINs or batch loading. For large tables, consider partitioning by date. Always use parameterized queries to prevent SQL injection. ## Redis Caching Patterns Use Redis for session storage, rate limiting, and cache-aside patterns. Set TTLs on cached data to prevent stale reads. Consider Redis Cluster for high availability. Monitor memory usage—Redis holds everything in RAM. ## HubSpot CRM Integration HubSpot offers a REST API and webhooks for real-time sync. Authentication uses private apps (access token) or OAuth for public apps. The CRM API covers contacts, companies, deals, and tickets. Use the Search API for complex queries. Webhook subscriptions require a valid endpoint that responds to verification challenges. ## Xero Accounting Integration Xero uses OAuth 2.0. The API base is https://api.xero.com/api.xro/2.0/. Endpoints include Invoices, Contacts, Payments, and BankTransactions. Connections are tenant-specific—multi-tenant apps must handle organization switching. Rate limits: 60 calls per minute per organization. ## PostgreSQL Best Practices Use connection pooling (PgBouncer) for web applications. Index foreign keys and frequently queried columns. Avoid N+1 queries—use JOINs or batch loading. For large tables, consider partitioning by date. Always use parameterized queries to prevent SQL injection. ## Redis Caching Patterns Use Redis for session storage, rate limiting, and cache-aside patterns. Set TTLs on cached data to prevent stale reads. Consider Redis Cluster for high availability. Monitor memory usage—Redis holds everything in RAM. ## HubSpot CRM Integration HubSpot offers a REST API and webhooks for real-time sync. Authentication uses private apps (access token) or OAuth for public apps. The CRM API covers contacts, companies, deals, and tickets. Use the Search API for complex queries. Webhook subscriptions require a valid endpoint that responds to verification challenges. ## Xero Accounting Integration Xero uses OAuth 2.0. The API base is https://api.xero.com/api.xro/2.0/. Endpoints include Invoices, Contacts, Payments, and BankTransactions. Connections are tenant-specific—multi-tenant apps must handle organization switching. Rate limits: 60 calls per minute per organization. ## PostgreSQL Best Practices Use connection pooling (PgBouncer) for web applications. Index foreign keys and frequently queried columns. Avoid N+1 queries—use JOINs or batch loading. For large tables, consider partitioning by date. Always use parameterized queries to prevent SQL injection. ## Redis Caching Patterns Use Redis for session storage, rate limiting, and cache-aside patterns. Set TTLs on cached data to prevent stale reads. Consider Redis Cluster for high availability. Monitor memory usage—Redis holds everything in RAM. ## HubSpot CRM Integration HubSpot offers a REST API and webhooks for real-time sync. Authentication uses private apps (access token) or OAuth for public apps. The CRM API covers contacts, companies, deals, and tickets. Use the Search API for complex queries. Webhook subscriptions require a valid endpoint that responds to verification challenges. ## Xero Accounting Integration Xero uses OAuth 2.0. The API base is https://api.xero.com/api.xro/2.0/. Endpoints include Invoices, Contacts, Payments, and BankTransactions. Connections are tenant-specific—multi-tenant apps must handle organization switching. Rate limits: 60 calls per minute per organization. ## PostgreSQL Best Practices Use connection pooling (PgBouncer) for web applications. Index foreign keys and frequently queried columns. Avoid N+1 queries—use JOINs or batch loading. For large tables, consider partitioning by date. Always use parameterized queries to prevent SQL injection. ## Redis Caching Patterns Use Redis for session storage, rate limiting, and cache-aside patterns. Set TTLs on cached data to prevent stale reads. Consider Redis Cluster for high availability. Monitor memory usage—Redis holds everything in RAM. ## HubSpot CRM Integration HubSpot offers a REST API and webhooks for real-time sync. Authentication uses private apps (access token) or OAuth for public apps. The CRM API covers contacts, companies, deals, and tickets. Use the Search API for complex queries. Webhook subscriptions require a valid endpoint that responds to verification challenges. ## Xero Accounting Integration Xero uses OAuth 2.0. The API base is https://api.xero.com/api.xro/2.0/. Endpoints include Invoices, Contacts, Payments, and BankTransactions. Connections are tenant-specific—multi-tenant apps must handle organization switching. Rate limits: 60 calls per minute per organization. ## PostgreSQL Best Practices Use connection pooling (PgBouncer) for web applications. Index foreign keys and frequently queried columns. Avoid N+1 queries—use JOINs or batch loading. For large tables, consider partitioning by date. Always use parameterized queries to prevent SQL injection. ## Redis Caching Patterns Use Redis for session storage, rate limiting, and cache-aside patterns. Set TTLs on cached data to prevent stale reads. Consider Redis Cluster for high availability. Monitor memory usage—Redis holds everything in RAM. ## HubSpot CRM Integration HubSpot offers a REST API and webhooks for real-time sync. Authentication uses private apps (access token) or OAuth for public apps. The CRM API covers contacts, companies, deals, and tickets. Use the Search API for complex queries. Webhook subscriptions require a valid endpoint that responds to verification challenges. ## Xero Accounting Integration Xero uses OAuth 2.0. The API base is https://api.xero.com/api.xro/2.0/. Endpoints include Invoices, Contacts, Payments, and BankTransactions. Connections are tenant-specific—multi-tenant apps must handle organization switching. Rate limits: 60 calls per minute per organization. ## PostgreSQL Best Practices Use connection pooling (PgBouncer) for web applications. Index foreign keys and frequently queried columns. Avoid N+1 queries—use JOINs or batch loading. For large tables, consider partitioning by date. Always use parameterized queries to prevent SQL injection. ## Redis Caching Patterns Use Redis for session storage, rate limiting, and cache-aside patterns. Set TTLs on cached data to prevent stale reads. Consider Redis Cluster for high availability. Monitor memory usage—Redis holds everything in RAM. ## HubSpot CRM Integration HubSpot offers a REST API and webhooks for real-time sync. Authentication uses private apps (access token) or OAuth for public apps. The CRM API covers contacts, companies, deals, and tickets. Use the Search API for complex queries. Webhook subscriptions require a valid endpoint that responds to verification challenges. ## Xero Accounting Integration Xero uses OAuth 2.0. The API base is https://api.xero.com/api.xro/2.0/. Endpoints include Invoices, Contacts, Payments, and BankTransactions. Connections are tenant-specific—multi-tenant apps must handle organization switching. Rate limits: 60 calls per minute per organization. ## PostgreSQL Best Practices Use connection pooling (PgBouncer) for web applications. Index foreign keys and frequently queried columns. Avoid N+1 queries—use JOINs or batch loading. For large tables, consider partitioning by date. Always use parameterized queries to prevent SQL injection. ## Redis Caching Patterns Use Redis for session storage, rate limiting, and cache-aside patterns. Set TTLs on cached data to prevent stale reads. Consider Redis Cluster for high availability. Monitor memory usage—Redis holds everything in RAM. ## HubSpot CRM Integration HubSpot offers a REST API and webhooks for real-time sync. Authentication uses private apps (access token) or OAuth for public apps. The CRM API covers contacts, companies, deals, and tickets. Use the Search API for complex queries. Webhook subscriptions require a valid endpoint that responds to verification challenges. ## Xero Accounting Integration Xero uses OAuth 2.0. The API base is https://api.xero.com/api.xro/2.0/. Endpoints include Invoices, Contacts, Payments, and BankTransactions. Connections are tenant-specific—multi-tenant apps must handle organization switching. Rate limits: 60 calls per minute per organization. ## PostgreSQL Best Practices Use connection pooling (PgBouncer) for web applications. Index foreign keys and frequently queried columns. Avoid N+1 queries—use JOINs or batch loading. For large tables, consider partitioning by date. Always use parameterized queries to prevent SQL injection. ## Redis Caching Patterns Use Redis for session storage, rate limiting, and cache-aside patterns. Set TTLs on cached data to prevent stale reads. Consider Redis Cluster for high availability. Monitor memory usage—Redis holds everything in RAM. ## HubSpot CRM Integration HubSpot offers a REST API and webhooks for real-time sync. Authentication uses private apps (access token) or OAuth for public apps. The CRM API covers contacts, companies, deals, and tickets. Use the Search API for complex queries. Webhook subscriptions require a valid endpoint that responds to verification challenges. ## Xero Accounting Integration Xero uses OAuth 2.0. The API base is https://api.xero.com/api.xro/2.0/. Endpoints include Invoices, Contacts, Payments, and BankTransactions. Connections are tenant-specific—multi-tenant apps must handle organization switching. Rate limits: 60 calls per minute per organization. ## PostgreSQL Best Practices Use connection pooling (PgBouncer) for web applications. Index foreign keys and frequently queried columns. Avoid N+1 queries—use JOINs or batch loading. For large tables, consider partitioning by date. Always use parameterized queries to prevent SQL injection. ## Redis Caching Patterns Use Redis for session storage, rate limiting, and cache-aside patterns. Set TTLs on cached data to prevent stale reads. Consider Redis Cluster for high availability. Monitor memory usage—Redis holds everything in RAM. ## HubSpot CRM Integration HubSpot offers a REST API and webhooks for real-time sync. Authentication uses private apps (access token) or OAuth for public apps. The CRM API covers contacts, companies, deals, and tickets. Use the Search API for complex queries. Webhook subscriptions require a valid endpoint that responds to verification challenges. ## Xero Accounting Integration Xero uses OAuth 2.0. The API base is https://api.xero.com/api.xro/2.0/. Endpoints include Invoices, Contacts, Payments, and BankTransactions. Connections are tenant-specific—multi-tenant apps must handle organization switching. Rate limits: 60 calls per minute per organization. ## PostgreSQL Best Practices Use connection pooling (PgBouncer) for web applications. Index foreign keys and frequently queried columns. Avoid N+1 queries—use JOINs or batch loading. For large tables, consider partitioning by date. Always use parameterized queries to prevent SQL injection. ## Redis Caching Patterns Use Redis for session storage, rate limiting, and cache-aside patterns. Set TTLs on cached data to prevent stale reads. Consider Redis Cluster for high availability. Monitor memory usage—Redis holds everything in RAM. ## HubSpot CRM Integration HubSpot offers a REST API and webhooks for real-time sync. Authentication uses private apps (access token) or OAuth for public apps. The CRM API covers contacts, companies, deals, and tickets. Use the Search API for complex queries. Webhook subscriptions require a valid endpoint that responds to verification challenges. ## Xero Accounting Integration Xero uses OAuth 2.0. The API base is https://api.xero.com/api.xro/2.0/. Endpoints include Invoices, Contacts, Payments, and BankTransactions. Connections are tenant-specific—multi-tenant apps must handle organization switching. Rate limits: 60 calls per minute per organization. ## PostgreSQL Best Practices Use connection pooling (PgBouncer) for web applications. Index foreign keys and frequently queried columns. Avoid N+1 queries—use JOINs or batch loading. For large tables, consider partitioning by date. Always use parameterized queries to prevent SQL injection. ## Redis Caching Patterns Use Redis for session storage, rate limiting, and cache-aside patterns. Set TTLs on cached data to prevent stale reads. Consider Redis Cluster for high availability. Monitor memory usage—Redis holds everything in RAM. ## HubSpot CRM Integration HubSpot offers a REST API and webhooks for real-time sync. Authentication uses private apps (access token) or OAuth for public apps. The CRM API covers contacts, companies, deals, and tickets. Use the Search API for complex queries. Webhook subscriptions require a valid endpoint that responds to verification challenges. ## Xero Accounting Integration Xero uses OAuth 2.0. The API base is https://api.xero.com/api.xro/2.0/. Endpoints include Invoices, Contacts, Payments, and BankTransactions. Connections are tenant-specific—multi-tenant apps must handle organization switching. Rate limits: 60 calls per minute per organization. ## PostgreSQL Best Practices Use connection pooling (PgBouncer) for web applications. Index foreign keys and frequently queried columns. Avoid N+1 queries—use JOINs or batch loading. For large tables, consider partitioning by date. Always use parameterized queries to prevent SQL injection. ## Redis Caching Patterns Use Redis for session storage, rate limiting, and cache-aside patterns. Set TTLs on cached data to prevent stale reads. Consider Redis Cluster for high availability. Monitor memory usage—Redis holds everything in RAM. ## HubSpot CRM Integration HubSpot offers a REST API and webhooks for real-time sync. Authentication uses private apps (access token) or OAuth for public apps. The CRM API covers contacts, companies, deals, and tickets. Use the Search API for complex queries. Webhook subscriptions require a valid endpoint that responds to verification challenges. ## Xero Accounting Integration Xero uses OAuth 2.0. The API base is https://api.xero.com/api.xro/2.0/. Endpoints include Invoices, Contacts, Payments, and BankTransactions. Connections are tenant-specific—multi-tenant apps must handle organization switching. Rate limits: 60 calls per minute per organization. ## PostgreSQL Best Practices Use connection pooling (PgBouncer) for web applications. Index foreign keys and frequently queried columns. Avoid N+1 queries—use JOINs or batch loading. For large tables, consider partitioning by date. Always use parameterized queries to prevent SQL injection. ## Redis Caching Patterns Use Redis for session storage, rate limiting, and cache-aside patterns. Set TTLs on cached data to prevent stale reads. Consider Redis Cluster for high availability. Monitor memory usage—Redis holds everything in RAM. ## HubSpot CRM Integration HubSpot offers a REST API and webhooks for real-time sync. Authentication uses private apps (access token) or OAuth for public apps. The CRM API covers contacts, companies, deals, and tickets. Use the Search API for complex queries. Webhook subscriptions require a valid endpoint that responds to verification challenges. ## Xero Accounting Integration Xero uses OAuth 2.0. The API base is https://api.xero.com/api.xro/2.0/. Endpoints include Invoices, Contacts, Payments, and BankTransactions. Connections are tenant-specific—multi-tenant apps must handle organization switching. Rate limits: 60 calls per minute per organization. ## PostgreSQL Best Practices Use connection pooling (PgBouncer) for web applications. Index foreign keys and frequently queried columns. Avoid N+1 queries—use JOINs or batch loading. For large tables, consider partitioning by date. Always use parameterized queries to prevent SQL injection. ## Redis Caching Patterns Use Redis for session storage, rate limiting, and cache-aside patterns. Set TTLs on cached data to prevent stale reads. Consider Redis Cluster for high availability. Monitor memory usage—Redis holds everything in RAM. ## HubSpot CRM Integration HubSpot offers a REST API and webhooks for real-time sync. Authentication uses private apps (access token) or OAuth for public apps. The CRM API covers contacts, companies, deals, and tickets. Use the Search API for complex queries. Webhook subscriptions require a valid endpoint that responds to verification challenges. ## Xero Accounting Integration Xero uses OAuth 2.0. The API base is https://api.xero.com/api.xro/2.0/. Endpoints include Invoices, Contacts, Payments, and BankTransactions. Connections are tenant-specific—multi-tenant apps must handle organization switching. Rate limits: 60 calls per minute per organization. ## PostgreSQL Best Practices Use connection pooling (PgBouncer) for web applications. Index foreign keys and frequently queried columns. Avoid N+1 queries—use JOINs or batch loading. For large tables, consider partitioning by date. Always use parameterized queries to prevent SQL injection. ## Redis Caching Patterns Use Redis for session storage, rate limiting, and cache-aside patterns. Set TTLs on cached data to prevent stale reads. Consider Redis Cluster for high availability. Monitor memory usage—Redis holds everything in RAM. ## HubSpot CRM Integration HubSpot offers a REST API and webhooks for real-time sync. Authentication uses private apps (access token) or OAuth for public apps. The CRM API covers contacts, companies, deals, and tickets. Use the Search API for complex queries. Webhook subscriptions require a valid endpoint that responds to verification challenges. ## Xero Accounting Integration Xero uses OAuth 2.0. The API base is https://api.xero.com/api.xro/2.0/. Endpoints include Invoices, Contacts, Payments, and BankTransactions. Connections are tenant-specific—multi-tenant apps must handle organization switching. Rate limits: 60 calls per minute per organization. ## PostgreSQL Best Practices Use connection pooling (PgBouncer) for web applications. Index foreign keys and frequently queried columns. Avoid N+1 queries—use JOINs or batch loading. For large tables, consider partitioning by date. Always use parameterized queries to prevent SQL injection. ## Redis Caching Patterns Use Redis for session storage, rate limiting, and cache-aside patterns. Set TTLs on cached data to prevent stale reads. Consider Redis Cluster for high availability. Monitor memory usage—Redis holds everything in RAM. ## HubSpot CRM Integration HubSpot offers a REST API and webhooks for real-time sync. Authentication uses private apps (access token) or OAuth for public apps. The CRM API covers contacts, companies, deals, and tickets. Use the Search API for complex queries. Webhook subscriptions require a valid endpoint that responds to verification challenges. ## Xero Accounting Integration Xero uses OAuth 2.0. The API base is https://api.xero.com/api.xro/2.0/. Endpoints include Invoices, Contacts, Payments, and BankTransactions. Connections are tenant-specific—multi-tenant apps must handle organization switching. Rate limits: 60 calls per minute per organization. ## PostgreSQL Best Practices Use connection pooling (PgBouncer) for web applications. Index foreign keys and frequently queried columns. Avoid N+1 queries—use JOINs or batch loading. For large tables, consider partitioning by date. Always use parameterized queries to prevent SQL injection. ## Redis Caching Patterns Use Redis for session storage, rate limiting, and cache-aside patterns. Set TTLs on cached data to prevent stale reads. Consider Redis Cluster for high availability. Monitor memory usage—Redis holds everything in RAM. ## HubSpot CRM Integration HubSpot offers a REST API and webhooks for real-time sync. Authentication uses private apps (access token) or OAuth for public apps. The CRM API covers contacts, companies, deals, and tickets. Use the Search API for complex queries. Webhook subscriptions require a valid endpoint that responds to verification challenges. ## Xero Accounting Integration Xero uses OAuth 2.0. The API base is https://api.xero.com/api.xro/2.0/. Endpoints include Invoices, Contacts, Payments, and BankTransactions. Connections are tenant-specific—multi-tenant apps must handle organization switching. Rate limits: 60 calls per minute per organization. ## PostgreSQL Best Practices Use connection pooling (PgBouncer) for web applications. Index foreign keys and frequently queried columns. Avoid N+1 queries—use JOINs or batch loading. For large tables, consider partitioning by date. Always use parameterized queries to prevent SQL injection. ## Redis Caching Patterns Use Redis for session storage, rate limiting, and cache-aside patterns. Set TTLs on cached data to prevent stale reads. Consider Redis Cluster for high availability. Monitor memory usage—Redis holds everything in RAM. ## HubSpot CRM Integration HubSpot offers a REST API and webhooks for real-time sync. Authentication uses private apps (access token) or OAuth for public apps. The CRM API covers contacts, companies, deals, and tickets. Use the Search API for complex queries. Webhook subscriptions require a valid endpoint that responds to verification challenges. ## Xero Accounting Integration Xero uses OAuth 2.0. The API base is https://api.xero.com/api.xro/2.0/. Endpoints include Invoices, Contacts, Payments, and BankTransactions. Connections are tenant-specific—multi-tenant apps must handle organization switching. Rate limits: 60 calls per minute per organization. ## PostgreSQL Best Practices Use connection pooling (PgBouncer) for web applications. Index foreign keys and frequently queried columns. Avoid N+1 queries—use JOINs or batch loading. For large tables, consider partitioning by date. Always use parameterized queries to prevent SQL injection. ## Redis Caching Patterns Use Redis for session storage, rate limiting, and cache-aside patterns. Set TTLs on cached data to prevent stale reads. Consider Redis Cluster for high availability. Monitor memory usage—Redis holds everything in RAM. ## HubSpot CRM Integration HubSpot offers a REST API and webhooks for real-time sync. Authentication uses private apps (access token) or OAuth for public apps. The CRM API covers contacts, companies, deals, and tickets. Use the Search API for complex queries. Webhook subscriptions require a valid endpoint that responds to verification challenges. ## Xero Accounting Integration Xero uses OAuth 2.0. The API base is https://api.xero.com/api.xro/2.0/. Endpoints include Invoices, Contacts, Payments, and BankTransactions. Connections are tenant-specific—multi-tenant apps must handle organization switching. Rate limits: 60 calls per minute per organization. ## PostgreSQL Best Practices Use connection pooling (PgBouncer) for web applications. Index foreign keys and frequently queried columns. Avoid N+1 queries—use JOINs or batch loading. For large tables, consider partitioning by date. Always use parameterized queries to prevent SQL injection. ## Redis Caching Patterns Use Redis for session storage, rate limiting, and cache-aside patterns. Set TTLs on cached data to prevent stale reads. Consider Redis Cluster for high availability. Monitor memory usage—Redis holds everything in RAM. ## HubSpot CRM Integration HubSpot offers a REST API and webhooks for real-time sync. Authentication uses private apps (access token) or OAuth for public apps. The CRM API covers contacts, companies, deals, and tickets. Use the Search API for complex queries. Webhook subscriptions require a valid endpoint that responds to verification challenges. ## Xero Accounting Integration Xero uses OAuth 2.0. The API base is https://api.xero.com/api.xro/2.0/. Endpoints include Invoices, Contacts, Payments, and BankTransactions. Connections are tenant-specific—multi-tenant apps must handle organization switching. Rate limits: 60 calls per minute per organization. ## PostgreSQL Best Practices Use connection pooling (PgBouncer) for web applications. Index foreign keys and frequently queried columns. Avoid N+1 queries—use JOINs or batch loading. For large tables, consider partitioning by date. Always use parameterized queries to prevent SQL injection. ## Redis Caching Patterns Use Redis for session storage, rate limiting, and cache-aside patterns. Set TTLs on cached data to prevent stale reads. Consider Redis Cluster for high availability. Monitor memory usage—Redis holds everything in RAM. ## HubSpot CRM Integration HubSpot offers a REST API and webhooks for real-time sync. Authentication uses private apps (access token) or OAuth for public apps. The CRM API covers contacts, companies, deals, and tickets. Use the Search API for complex queries. Webhook subscriptions require a valid endpoint that responds to verification challenges. ## Xero Accounting Integration Xero uses OAuth 2.0. The API base is https://api.xero.com/api.xro/2.0/. Endpoints include Invoices, Contacts, Payments, and BankTransactions. Connections are tenant-specific—multi-tenant apps must handle organization switching. Rate limits: 60 calls per minute per organization. ## PostgreSQL Best Practices Use connection pooling (PgBouncer) for web applications. Index foreign keys and frequently queried columns. Avoid N+1 queries—use JOINs or batch loading. For large tables, consider partitioning by date. Always use parameterized queries to prevent SQL injection. ## Redis Caching Patterns Use Redis for session storage, rate limiting, and cache-aside patterns. Set TTLs on cached data to prevent stale reads. Consider Redis Cluster for high availability. Monitor memory usage—Redis holds everything in RAM. ## HubSpot CRM Integration HubSpot offers a REST API and webhooks for real-time sync. Authentication uses private apps (access token) or OAuth for public apps. The CRM API covers contacts, companies, deals, and tickets. Use the Search API for complex queries. Webhook subscriptions require a valid endpoint that responds to verification challenges. ## Xero Accounting Integration Xero uses OAuth 2.0. The API base is https://api.xero.com/api.xro/2.0/. Endpoints include Invoices, Contacts, Payments, and BankTransactions. Connections are tenant-specific—multi-tenant apps must handle organization switching. Rate limits: 60 calls per minute per organization. ## PostgreSQL Best Practices Use connection pooling (PgBouncer) for web applications. Index foreign keys and frequently queried columns. Avoid N+1 queries—use JOINs or batch loading. For large tables, consider partitioning by date. Always use parameterized queries to prevent SQL injection. ## Redis Caching Patterns Use Redis for session storage, rate limiting, and cache-aside patterns. Set TTLs on cached data to prevent stale reads. Consider Redis Cluster for high availability. Monitor memory usage—Redis holds everything in RAM. ## HubSpot CRM Integration HubSpot offers a REST API and webhooks for real-time sync. Authentication uses private apps (access token) or OAuth for public apps. The CRM API covers contacts, companies, deals, and tickets. Use the Search API for complex queries. Webhook subscriptions require a valid endpoint that responds to verification challenges. ## Xero Accounting Integration Xero uses OAuth 2.0. The API base is https://api.xero.com/api.xro/2.0/. Endpoints include Invoices, Contacts, Payments, and BankTransactions. Connections are tenant-specific—multi-tenant apps must handle organization switching. Rate limits: 60 calls per minute per organization. ## PostgreSQL Best Practices Use connection pooling (PgBouncer) for web applications. Index foreign keys and frequently queried columns. Avoid N+1 queries—use JOINs or batch loading. For large tables, consider partitioning by date. Always use parameterized queries to prevent SQL injection. ## Redis Caching Patterns Use Redis for session storage, rate limiting, and cache-aside patterns. Set TTLs on cached data to prevent stale reads. Consider Redis Cluster for high availability. Monitor memory usage—Redis holds everything in RAM. ## HubSpot CRM Integration HubSpot offers a REST API and webhooks for real-time sync. Authentication uses private apps (access token) or OAuth for public apps. The CRM API covers contacts, companies, deals, and tickets. Use the Search API for complex queries. Webhook subscriptions require a valid endpoint that responds to verification challenges. ## Xero Accounting Integration Xero uses OAuth 2.0. The API base is https://api.xero.com/api.xro/2.0/. Endpoints include Invoices, Contacts, Payments, and BankTransactions. Connections are tenant-specific—multi-tenant apps must handle organization switching. Rate limits: 60 calls per minute per organization. ## PostgreSQL Best Practices Use connection pooling (PgBouncer) for web applications. Index foreign keys and frequently queried columns. Avoid N+1 queries—use JOINs or batch loading. For large tables, consider partitioning by date. Always use parameterized queries to prevent SQL injection. ## Redis Caching Patterns Use Redis for session storage, rate limiting, and cache-aside patterns. Set TTLs on cached data to prevent stale reads. Consider Redis Cluster for high availability. Monitor memory usage—Redis holds everything in RAM. ## HubSpot CRM Integration HubSpot offers a REST API and webhooks for real-time sync. Authentication uses private apps (access token) or OAuth for public apps. The CRM API covers contacts, companies, deals, and tickets. Use the Search API for complex queries. Webhook subscriptions require a valid endpoint that responds to verification challenges. ## Xero Accounting Integration Xero uses OAuth 2.0. The API base is https://api.xero.com/api.xro/2.0/. Endpoints include Invoices, Contacts, Payments, and BankTransactions. Connections are tenant-specific—multi-tenant apps must handle organization switching. Rate limits: 60 calls per minute per organization. ## PostgreSQL Best Practices Use connection pooling (PgBouncer) for web applications. Index foreign keys and frequently queried columns. Avoid N+1 queries—use JOINs or batch loading. For large tables, consider partitioning by date. Always use parameterized queries to prevent SQL injection. ## Redis Caching Patterns Use Redis for session storage, rate limiting, and cache-aside patterns. Set TTLs on cached data to prevent stale reads. Consider Redis Cluster for high availability. Monitor memory usage—Redis holds everything in RAM. ## HubSpot CRM Integration HubSpot offers a REST API and webhooks for real-time sync. Authentication uses private apps (access token) or OAuth for public apps. The CRM API covers contacts, companies, deals, and tickets. Use the Search API for complex queries. Webhook subscriptions require a valid endpoint that responds to verification challenges. ## Xero Accounting Integration Xero uses OAuth 2.0. The API base is https://api.xero.com/api.xro/2.0/. Endpoints include Invoices, Contacts, Payments, and BankTransactions. Connections are tenant-specific—multi-tenant apps must handle organization switching. Rate limits: 60 calls per minute per organization. ## PostgreSQL Best Practices Use connection pooling (PgBouncer) for web applications. Index foreign keys and frequently queried columns. Avoid N+1 queries—use JOINs or batch loading. For large tables, consider partitioning by date. Always use parameterized queries to prevent SQL injection. ## Redis Caching Patterns Use Redis for session storage, rate limiting, and cache-aside patterns. Set TTLs on cached data to prevent stale reads. Consider Redis Cluster for high availability. Monitor memory usage—Redis holds everything in RAM. ## HubSpot CRM Integration HubSpot offers a REST API and webhooks for real-time sync. Authentication uses private apps (access token) or OAuth for public apps. The CRM API covers contacts, companies, deals, and tickets. Use the Search API for complex queries. Webhook subscriptions require a valid endpoint that responds to verification challenges. ## Xero Accounting Integration Xero uses OAuth 2.0. The API base is https://api.xero.com/api.xro/2.0/. Endpoints include Invoices, Contacts, Payments, and BankTransactions. Connections are tenant-specific—multi-tenant apps must handle organization switching. Rate limits: 60 calls per minute per organization. ## PostgreSQL Best Practices Use connection pooling (PgBouncer) for web applications. Index foreign keys and frequently queried columns. Avoid N+1 queries—use JOINs or batch loading. For large tables, consider partitioning by date. Always use parameterized queries to prevent SQL injection. ## Redis Caching Patterns Use Redis for session storage, rate limiting, and cache-aside patterns. Set TTLs on cached data to prevent stale reads. Consider Redis Cluster for high availability. Monitor memory usage—Redis holds everything in RAM. ## HubSpot CRM Integration HubSpot offers a REST API and webhooks for real-time sync. Authentication uses private apps (access token) or OAuth for public apps. The CRM API covers contacts, companies, deals, and tickets. Use the Search API for complex queries. Webhook subscriptions require a valid endpoint that responds to verification challenges. ## Xero Accounting Integration Xero uses OAuth 2.0. The API base is https://api.xero.com/api.xro/2.0/. Endpoints include Invoices, Contacts, Payments, and BankTransactions. Connections are tenant-specific—multi-tenant apps must handle organization switching. Rate limits: 60 calls per minute per organization. ## PostgreSQL Best Practices Use connection pooling (PgBouncer) for web applications. Index foreign keys and frequently queried columns. Avoid N+1 queries—use JOINs or batch loading. For large tables, consider partitioning by date. Always use parameterized queries to prevent SQL injection. ## Redis Caching Patterns Use Redis for session storage, rate limiting, and cache-aside patterns. Set TTLs on cached data to prevent stale reads. Consider Redis Cluster for high availability. Monitor memory usage—Redis holds everything in RAM. ## HubSpot CRM Integration HubSpot offers a REST API and webhooks for real-time sync. Authentication uses private apps (access token) or OAuth for public apps. The CRM API covers contacts, companies, deals, and tickets. Use the Search API for complex queries. Webhook subscriptions require a valid endpoint that responds to verification challenges. ## Xero Accounting Integration Xero uses OAuth 2.0. The API base is https://api.xero.com/api.xro/2.0/. Endpoints include Invoices, Contacts, Payments, and BankTransactions. Connections are tenant-specific—multi-tenant apps must handle organization switching. Rate limits: 60 calls per minute per organization. ## PostgreSQL Best Practices Use connection pooling (PgBouncer) for web applications. Index foreign keys and frequently queried columns. Avoid N+1 queries—use JOINs or batch loading. For large tables, consider partitioning by date. Always use parameterized queries to prevent SQL injection. ## Redis Caching Patterns Use Redis for session storage, rate limiting, and cache-aside patterns. Set TTLs on cached data to prevent stale reads. Consider Redis Cluster for high availability. Monitor memory usage—Redis holds everything in RAM. ## HubSpot CRM Integration HubSpot offers a REST API and webhooks for real-time sync. Authentication uses private apps (access token) or OAuth for public apps. The CRM API covers contacts, companies, deals, and tickets. Use the Search API for complex queries. Webhook subscriptions require a valid endpoint that responds to verification challenges. ## Xero Accounting Integration Xero uses OAuth 2.0. The API base is https://api.xero.com/api.xro/2.0/. Endpoints include Invoices, Contacts, Payments, and BankTransactions. Connections are tenant-specific—multi-tenant apps must handle organization switching. Rate limits: 60 calls per minute per organization. ## PostgreSQL Best Practices Use connection pooling (PgBouncer) for web applications. Index foreign keys and frequently queried columns. Avoid N+1 queries—use JOINs or batch loading. For large tables, consider partitioning by date. Always use parameterized queries to prevent SQL injection. ## Redis Caching Patterns Use Redis for session storage, rate limiting, and cache-aside patterns. Set TTLs on cached data to prevent stale reads. Consider Redis Cluster for high availability. Monitor memory usage—Redis holds everything in RAM. ## HubSpot CRM Integration HubSpot offers a REST API and webhooks for real-time sync. Authentication uses private apps (access token) or OAuth for public apps. The CRM API covers contacts, companies, deals, and tickets. Use the Search API for complex queries. Webhook subscriptions require a valid endpoint that responds to verification challenges. ## Xero Accounting Integration Xero uses OAuth 2.0. The API base is https://api.xero.com/api.xro/2.0/. Endpoints include Invoices, Contacts, Payments, and BankTransactions. Connections are tenant-specific—multi-tenant apps must handle organization switching. Rate limits: 60 calls per minute per organization. ## PostgreSQL Best Practices Use connection pooling (PgBouncer) for web applications. Index foreign keys and frequently queried columns. Avoid N+1 queries—use JOINs or batch loading. For large tables, consider partitioning by date. Always use parameterized queries to prevent SQL injection. ## Redis Caching Patterns Use Redis for session storage, rate limiting, and cache-aside patterns. Set TTLs on cached data to prevent stale reads. Consider Redis Cluster for high availability. Monitor memory usage—Redis holds everything in RAM. ## HubSpot CRM Integration HubSpot offers a REST API and webhooks for real-time sync. Authentication uses private apps (access token) or OAuth for public apps. The CRM API covers contacts, companies, deals, and tickets. Use the Search API for complex queries. Webhook subscriptions require a valid endpoint that responds to verification challenges. ## Xero Accounting Integration Xero uses OAuth 2.0. The API base is https://api.xero.com/api.xro/2.0/. Endpoints include Invoices, Contacts, Payments, and BankTransactions. Connections are tenant-specific—multi-tenant apps must handle organization switching. Rate limits: 60 calls per minute per organization. ## PostgreSQL Best Practices Use connection pooling (PgBouncer) for web applications. Index foreign keys and frequently queried columns. Avoid N+1 queries—use JOINs or batch loading. For large tables, consider partitioning by date. Always use parameterized queries to prevent SQL injection. ## Redis Caching Patterns Use Redis for session storage, rate limiting, and cache-aside patterns. Set TTLs on cached data to prevent stale reads. Consider Redis Cluster for high availability. Monitor memory usage—Redis holds everything in RAM. ## HubSpot CRM Integration HubSpot offers a REST API and webhooks for real-time sync. Authentication uses private apps (access token) or OAuth for public apps. The CRM API covers contacts, companies, deals, and tickets. Use the Search API for complex queries. Webhook subscriptions require a valid endpoint that responds to verification challenges. ## Xero Accounting Integration Xero uses OAuth 2.0. The API base is https://api.xero.com/api.xro/2.0/. Endpoints include Invoices, Contacts, Payments, and BankTransactions. Connections are tenant-specific—multi-tenant apps must handle organization switching. Rate limits: 60 calls per minute per organization. ## PostgreSQL Best Practices Use connection pooling (PgBouncer) for web applications. Index foreign keys and frequently queried columns. Avoid N+1 queries—use JOINs or batch loading. For large tables, consider partitioning by date. Always use parameterized queries to prevent SQL injection. ## Redis Caching Patterns Use Redis for session storage, rate limiting, and cache-aside patterns. Set TTLs on cached data to prevent stale reads. Consider Redis Cluster for high availability. Monitor memory usage—Redis holds everything in RAM. ## HubSpot CRM Integration HubSpot offers a REST API and webhooks for real-time sync. Authentication uses private apps (access token) or OAuth for public apps. The CRM API covers contacts, companies, deals, and tickets. Use the Search API for complex queries. Webhook subscriptions require a valid endpoint that responds to verification challenges. ## Xero Accounting Integration Xero uses OAuth 2.0. The API base is https://api.xero.com/api.xro/2.0/. Endpoints include Invoices, Contacts, Payments, and BankTransactions. Connections are tenant-specific—multi-tenant apps must handle organization switching. Rate limits: 60 calls per minute per organization. ## PostgreSQL Best Practices Use connection pooling (PgBouncer) for web applications. Index foreign keys and frequently queried columns. Avoid N+1 queries—use JOINs or batch loading. For large tables, consider partitioning by date. Always use parameterized queries to prevent SQL injection. ## Redis Caching Patterns Use Redis for session storage, rate limiting, and cache-aside patterns. Set TTLs on cached data to prevent stale reads. Consider Redis Cluster for high availability. Monitor memory usage—Redis holds everything in RAM. ## HubSpot CRM Integration HubSpot offers a REST API and webhooks for real-time sync. Authentication uses private apps (access token) or OAuth for public apps. The CRM API covers contacts, companies, deals, and tickets. Use the Search API for complex queries. Webhook subscriptions require a valid endpoint that responds to verification challenges. ## Xero Accounting Integration Xero uses OAuth 2.0. The API base is https://api.xero.com/api.xro/2.0/. Endpoints include Invoices, Contacts, Payments, and BankTransactions. Connections are tenant-specific—multi-tenant apps must handle organization switching. Rate limits: 60 calls per minute per organization. ## PostgreSQL Best Practices Use connection pooling (PgBouncer) for web applications. Index foreign keys and frequently queried columns. Avoid N+1 queries—use JOINs or batch loading. For large tables, consider partitioning by date. Always use parameterized queries to prevent SQL injection. ## Redis Caching Patterns Use Redis for session storage, rate limiting, and cache-aside patterns. Set TTLs on cached data to prevent stale reads. Consider Redis Cluster for high availability. Monitor memory usage—Redis holds everything in RAM. ## HubSpot CRM Integration HubSpot offers a REST API and webhooks for real-time sync. Authentication uses private apps (access token) or OAuth for public apps. The CRM API covers contacts, companies, deals, and tickets. Use the Search API for complex queries. Webhook subscriptions require a valid endpoint that responds to verification challenges. ## Xero Accounting Integration Xero uses OAuth 2.0. The API base is https://api.xero.com/api.xro/2.0/. Endpoints include Invoices, Contacts, Payments, and BankTransactions. Connections are tenant-specific—multi-tenant apps must handle organization switching. Rate limits: 60 calls per minute per organization. ## PostgreSQL Best Practices Use connection pooling (PgBouncer) for web applications. Index foreign keys and frequently queried columns. Avoid N+1 queries—use JOINs or batch loading. For large tables, consider partitioning by date. Always use parameterized queries to prevent SQL injection. ## Redis Caching Patterns Use Redis for session storage, rate limiting, and cache-aside patterns. Set TTLs on cached data to prevent stale reads. Consider Redis Cluster for high availability. Monitor memory usage—Redis holds everything in RAM. ## HubSpot CRM Integration HubSpot offers a REST API and webhooks for real-time sync. Authentication uses private apps (access token) or OAuth for public apps. The CRM API covers contacts, companies, deals, and tickets. Use the Search API for complex queries. Webhook subscriptions require a valid endpoint that responds to verification challenges. ## Xero Accounting Integration Xero uses OAuth 2.0. The API base is https://api.xero.com/api.xro/2.0/. Endpoints include Invoices, Contacts, Payments, and BankTransactions. Connections are tenant-specific—multi-tenant apps must handle organization switching. Rate limits: 60 calls per minute per organization. ## PostgreSQL Best Practices Use connection pooling (PgBouncer) for web applications. Index foreign keys and frequently queried columns. Avoid N+1 queries—use JOINs or batch loading. For large tables, consider partitioning by date. Always use parameterized queries to prevent SQL injection. ## Redis Caching Patterns Use Redis for session storage, rate limiting, and cache-aside patterns. Set TTLs on cached data to prevent stale reads. Consider Redis Cluster for high availability. Monitor memory usage—Redis holds everything in RAM. ## HubSpot CRM Integration HubSpot offers a REST API and webhooks for real-time sync. Authentication uses private apps (access token) or OAuth for public apps. The CRM API covers contacts, companies, deals, and tickets. Use the Search API for complex queries. Webhook subscriptions require a valid endpoint that responds to verification challenges. ## Xero Accounting Integration Xero uses OAuth 2.0. The API base is https://api.xero.com/api.xro/2.0/. Endpoints include Invoices, Contacts, Payments, and BankTransactions. Connections are tenant-specific—multi-tenant apps must handle organization switching. Rate limits: 60 calls per minute per organization. ## PostgreSQL Best Practices Use connection pooling (PgBouncer) for web applications. Index foreign keys and frequently queried columns. Avoid N+1 queries—use JOINs or batch loading. For large tables, consider partitioning by date. Always use parameterized queries to prevent SQL injection. ## Redis Caching Patterns Use Redis for session storage, rate limiting, and cache-aside patterns. Set TTLs on cached data to prevent stale reads. Consider Redis Cluster for high availability. Monitor memory usage—Redis holds everything in RAM. ## HubSpot CRM Integration HubSpot offers a REST API and webhooks for real-time sync. Authentication uses private apps (access token) or OAuth for public apps. The CRM API covers contacts, companies, deals, and tickets. Use the Search API for complex queries. Webhook subscriptions require a valid endpoint that responds to verification challenges. ## Xero Accounting Integration Xero uses OAuth 2.0. The API base is https://api.xero.com/api.xro/2.0/. Endpoints include Invoices, Contacts, Payments, and BankTransactions. Connections are tenant-specific—multi-tenant apps must handle organization switching. Rate limits: 60 calls per minute per organization. ## PostgreSQL Best Practices Use connection pooling (PgBouncer) for web applications. Index foreign keys and frequently queried columns. Avoid N+1 queries—use JOINs or batch loading. For large tables, consider partitioning by date. Always use parameterized queries to prevent SQL injection. ## Redis Caching Patterns Use Redis for session storage, rate limiting, and cache-aside patterns. Set TTLs on cached data to prevent stale reads. Consider Redis Cluster for high availability. Monitor memory usage—Redis holds everything in RAM. ## HubSpot CRM Integration HubSpot offers a REST API and webhooks for real-time sync. Authentication uses private apps (access token) or OAuth for public apps. The CRM API covers contacts, companies, deals, and tickets. Use the Search API for complex queries. Webhook subscriptions require a valid endpoint that responds to verification challenges. ## Xero Accounting Integration Xero uses OAuth 2.0. The API base is https://api.xero.com/api.xro/2.0/. Endpoints include Invoices, Contacts, Payments, and BankTransactions. Connections are tenant-specific—multi-tenant apps must handle organization switching. Rate limits: 60 calls per minute per organization. ## PostgreSQL Best Practices Use connection pooling (PgBouncer) for web applications. Index foreign keys and frequently queried columns. Avoid N+1 queries—use JOINs or batch loading. For large tables, consider partitioning by date. Always use parameterized queries to prevent SQL injection. ## Redis Caching Patterns Use Redis for session storage, rate limiting, and cache-aside patterns. Set TTLs on cached data to prevent stale reads. Consider Redis Cluster for high availability. Monitor memory usage—Redis holds everything in RAM. ## HubSpot CRM Integration HubSpot offers a REST API and webhooks for real-time sync. Authentication uses private apps (access token) or OAuth for public apps. The CRM API covers contacts, companies, deals, and tickets. Use the Search API for complex queries. Webhook subscriptions require a valid endpoint that responds to verification challenges. ## Xero Accounting Integration Xero uses OAuth 2.0. The API base is https://api.xero.com/api.xro/2.0/. Endpoints include Invoices, Contacts, Payments, and BankTransactions. Connections are tenant-specific—multi-tenant apps must handle organization switching. Rate limits: 60 calls per minute per organization. ## PostgreSQL Best Practices Use connection pooling (PgBouncer) for web applications. Index foreign keys and frequently queried columns. Avoid N+1 queries—use JOINs or batch loading. For large tables, consider partitioning by date. Always use parameterized queries to prevent SQL injection. ## Redis Caching Patterns Use Redis for session storage, rate limiting, and cache-aside patterns. Set TTLs on cached data to prevent stale reads. Consider Redis Cluster for high availability. Monitor memory usage—Redis holds everything in RAM. ## HubSpot CRM Integration HubSpot offers a REST API and webhooks for real-time sync. Authentication uses private apps (access token) or OAuth for public apps. The CRM API covers contacts, companies, deals, and tickets. Use the Search API for complex queries. Webhook subscriptions require a valid endpoint that responds to verification challenges. ## Xero Accounting Integration Xero uses OAuth 2.0. The API base is https://api.xero.com/api.xro/2.0/. Endpoints include Invoices, Contacts, Payments, and BankTransactions. Connections are tenant-specific—multi-tenant apps must handle organization switching. Rate limits: 60 calls per minute per organization. ## PostgreSQL Best Practices Use connection pooling (PgBouncer) for web applications. Index foreign keys and frequently queried columns. Avoid N+1 queries—use JOINs or batch loading. For large tables, consider partitioning by date. Always use parameterized queries to prevent SQL injection. ## Redis Caching Patterns Use Redis for session storage, rate limiting, and cache-aside patterns. Set TTLs on cached data to prevent stale reads. Consider Redis Cluster for high availability. Monitor memory usage—Redis holds everything in RAM. ## HubSpot CRM Integration HubSpot offers a REST API and webhooks for real-time sync. Authentication uses private apps (access token) or OAuth for public apps. The CRM API covers contacts, companies, deals, and tickets. Use the Search API for complex queries. Webhook subscriptions require a valid endpoint that responds to verification challenges. ## Xero Accounting Integration Xero uses OAuth 2.0. The API base is https://api.xero.com/api.xro/2.0/. Endpoints include Invoices, Contacts, Payments, and BankTransactions. Connections are tenant-specific—multi-tenant apps must handle organization switching. Rate limits: 60 calls per minute per organization. ## PostgreSQL Best Practices Use connection pooling (PgBouncer) for web applications. Index foreign keys and frequently queried columns. Avoid N+1 queries—use JOINs or batch loading. For large tables, consider partitioning by date. Always use parameterized queries to prevent SQL injection. ## Redis Caching Patterns Use Redis for session storage, rate limiting, and cache-aside patterns. Set TTLs on cached data to prevent stale reads. Consider Redis Cluster for high availability. Monitor memory usage—Redis holds everything in RAM. ## HubSpot CRM Integration HubSpot offers a REST API and webhooks for real-time sync. Authentication uses private apps (access token) or OAuth for public apps. The CRM API covers contacts, companies, deals, and tickets. Use the Search API for complex queries. Webhook subscriptions require a valid endpoint that responds to verification challenges. ## Xero Accounting Integration Xero uses OAuth 2.0. The API base is https://api.xero.com/api.xro/2.0/. Endpoints include Invoices, Contacts, Payments, and BankTransactions. Connections are tenant-specific—multi-tenant apps must handle organization switching. Rate limits: 60 calls per minute per organization. ## PostgreSQL Best Practices Use connection pooling (PgBouncer) for web applications. Index foreign keys and frequently queried columns. Avoid N+1 queries—use JOINs or batch loading. For large tables, consider partitioning by date. Always use parameterized queries to prevent SQL injection. ## Redis Caching Patterns Use Redis for session storage, rate limiting, and cache-aside patterns. Set TTLs on cached data to prevent stale reads. Consider Redis Cluster for high availability. Monitor memory usage—Redis holds everything in RAM. ## HubSpot CRM Integration HubSpot offers a REST API and webhooks for real-time sync. Authentication uses private apps (access token) or OAuth for public apps. The CRM API covers contacts, companies, deals, and tickets. Use the Search API for complex queries. Webhook subscriptions require a valid endpoint that responds to verification challenges. ## Xero Accounting Integration Xero uses OAuth 2.0. The API base is https://api.xero.com/api.xro/2.0/. Endpoints include Invoices, Contacts, Payments, and BankTransactions. Connections are tenant-specific—multi-tenant apps must handle organization switching. Rate limits: 60 calls per minute per organization. ## PostgreSQL Best Practices Use connection pooling (PgBouncer) for web applications. Index foreign keys and frequently queried columns. Avoid N+1 queries—use JOINs or batch loading. For large tables, consider partitioning by date. Always use parameterized queries to prevent SQL injection. ## Redis Caching Patterns Use Redis for session storage, rate limiting, and cache-aside patterns. Set TTLs on cached data to prevent stale reads. Consider Redis Cluster for high availability. Monitor memory usage—Redis holds everything in RAM. ## HubSpot CRM Integration HubSpot offers a REST API and webhooks for real-time sync. Authentication uses private apps (access token) or OAuth for public apps. The CRM API covers contacts, companies, deals, and tickets. Use the Search API for complex queries. Webhook subscriptions require a valid endpoint that responds to verification challenges. ## Xero Accounting Integration Xero uses OAuth 2.0. The API base is https://api.xero.com/api.xro/2.0/. Endpoints include Invoices, Contacts, Payments, and BankTransactions. Connections are tenant-specific—multi-tenant apps must handle organization switching. Rate limits: 60 calls per minute per organization. ## PostgreSQL Best Practices Use connection pooling (PgBouncer) for web applications. Index foreign keys and frequently queried columns. Avoid N+1 queries—use JOINs or batch loading. For large tables, consider partitioning by date. Always use parameterized queries to prevent SQL injection. ## Redis Caching Patterns Use Redis for session storage, rate limiting, and cache-aside patterns. Set TTLs on cached data to prevent stale reads. Consider Redis Cluster for high availability. Monitor memory usage—Redis holds everything in RAM. ## HubSpot CRM Integration HubSpot offers a REST API and webhooks for real-time sync. Authentication uses private apps (access token) or OAuth for public apps. The CRM API covers contacts, companies, deals, and tickets. Use the Search API for complex queries. Webhook subscriptions require a valid endpoint that responds to verification challenges. ## Xero Accounting Integration Xero uses OAuth 2.0. The API base is https://api.xero.com/api.xro/2.0/. Endpoints include Invoices, Contacts, Payments, and BankTransactions. Connections are tenant-specific—multi-tenant apps must handle organization switching. Rate limits: 60 calls per minute per organization. ## PostgreSQL Best Practices Use connection pooling (PgBouncer) for web applications. Index foreign keys and frequently queried columns. Avoid N+1 queries—use JOINs or batch loading. For large tables, consider partitioning by date. Always use parameterized queries to prevent SQL injection. ## Redis Caching Patterns Use Redis for session storage, rate limiting, and cache-aside patterns. Set TTLs on cached data to prevent stale reads. Consider Redis Cluster for high availability. Monitor memory usage—Redis holds everything in RAM. ## HubSpot CRM Integration HubSpot offers a REST API and webhooks for real-time sync. Authentication uses private apps (access token) or OAuth for public apps. The CRM API covers contacts, companies, deals, and tickets. Use the Search API for complex queries. Webhook subscriptions require a valid endpoint that responds to verification challenges. ## Xero Accounting Integration Xero uses OAuth 2.0. The API base is https://api.xero.com/api.xro/2.0/. Endpoints include Invoices, Contacts, Payments, and BankTransactions. Connections are tenant-specific—multi-tenant apps must handle organization switching. Rate limits: 60 calls per minute per organization. ## PostgreSQL Best Practices Use connection pooling (PgBouncer) for web applications. Index foreign keys and frequently queried columns. Avoid N+1 queries—use JOINs or batch loading. For large tables, consider partitioning by date. Always use parameterized queries to prevent SQL injection. ## Redis Caching Patterns Use Redis for session storage, rate limiting, and cache-aside patterns. Set TTLs on cached data to prevent stale reads. Consider Redis Cluster for high availability. Monitor memory usage—Redis holds everything in RAM. ## HubSpot CRM Integration HubSpot offers a REST API and webhooks for real-time sync. Authentication uses private apps (access token) or OAuth for public apps. The CRM API covers contacts, companies, deals, and tickets. Use the Search API for complex queries. Webhook subscriptions require a valid endpoint that responds to verification challenges. ## Xero Accounting Integration Xero uses OAuth 2.0. The API base is https://api.xero.com/api.xro/2.0/. Endpoints include Invoices, Contacts, Payments, and BankTransactions. Connections are tenant-specific—multi-tenant apps must handle organization switching. Rate limits: 60 calls per minute per organization. ## PostgreSQL Best Practices Use connection pooling (PgBouncer) for web applications. Index foreign keys and frequently queried columns. Avoid N+1 queries—use JOINs or batch loading. For large tables, consider partitioning by date. Always use parameterized queries to prevent SQL injection. ## Redis Caching Patterns Use Redis for session storage, rate limiting, and cache-aside patterns. Set TTLs on cached data to prevent stale reads. Consider Redis Cluster for high availability. Monitor memory usage—Redis holds everything in RAM. ## HubSpot CRM Integration HubSpot offers a REST API and webhooks for real-time sync. Authentication uses private apps (access token) or OAuth for public apps. The CRM API covers contacts, companies, deals, and tickets. Use the Search API for complex queries. Webhook subscriptions require a valid endpoint that responds to verification challenges. ## Xero Accounting Integration Xero uses OAuth 2.0. The API base is https://api.xero.com/api.xro/2.0/. Endpoints include Invoices, Contacts, Payments, and BankTransactions. Connections are tenant-specific—multi-tenant apps must handle organization switching. Rate limits: 60 calls per minute per organization. ## PostgreSQL Best Practices Use connection pooling (PgBouncer) for web applications. Index foreign keys and frequently queried columns. Avoid N+1 queries—use JOINs or batch loading. For large tables, consider partitioning by date. Always use parameterized queries to prevent SQL injection. ## Redis Caching Patterns Use Redis for session storage, rate limiting, and cache-aside patterns. Set TTLs on cached data to prevent stale reads. Consider Redis Cluster for high availability. Monitor memory usage—Redis holds everything in RAM. ## HubSpot CRM Integration HubSpot offers a REST API and webhooks for real-time sync. Authentication uses private apps (access token) or OAuth for public apps. The CRM API covers contacts, companies, deals, and tickets. Use the Search API for complex queries. Webhook subscriptions require a valid endpoint that responds to verification challenges. ## Xero Accounting Integration Xero uses OAuth 2.0. The API base is https://api.xero.com/api.xro/2.0/. Endpoints include Invoices, Contacts, Payments, and BankTransactions. Connections are tenant-specific—multi-tenant apps must handle organization switching. Rate limits: 60 calls per minute per organization. ## PostgreSQL Best Practices Use connection pooling (PgBouncer) for web applications. Index foreign keys and frequently queried columns. Avoid N+1 queries—use JOINs or batch loading. For large tables, consider partitioning by date. Always use parameterized queries to prevent SQL injection. ## Redis Caching Patterns Use Redis for session storage, rate limiting, and cache-aside patterns. Set TTLs on cached data to prevent stale reads. Consider Redis Cluster for high availability. Monitor memory usage—Redis holds everything in RAM. ## HubSpot CRM Integration HubSpot offers a REST API and webhooks for real-time sync. Authentication uses private apps (access token) or OAuth for public apps. The CRM API covers contacts, companies, deals, and tickets. Use the Search API for complex queries. Webhook subscriptions require a valid endpoint that responds to verification challenges. ## Xero Accounting Integration Xero uses OAuth 2.0. The API base is https://api.xero.com/api.xro/2.0/. Endpoints include Invoices, Contacts, Payments, and BankTransactions. Connections are tenant-specific—multi-tenant apps must handle organization switching. Rate limits: 60 calls per minute per organization. ## PostgreSQL Best Practices Use connection pooling (PgBouncer) for web applications. Index foreign keys and frequently queried columns. Avoid N+1 queries—use JOINs or batch loading. For large tables, consider partitioning by date. Always use parameterized queries to prevent SQL injection. ## Redis Caching Patterns Use Redis for session storage, rate limiting, and cache-aside patterns. Set TTLs on cached data to prevent stale reads. Consider Redis Cluster for high availability. Monitor memory usage—Redis holds everything in RAM. ## HubSpot CRM Integration HubSpot offers a REST API and webhooks for real-time sync. Authentication uses private apps (access token) or OAuth for public apps. The CRM API covers contacts, companies, deals, and tickets. Use the Search API for complex queries. Webhook subscriptions require a valid endpoint that responds to verification challenges. ## Xero Accounting Integration Xero uses OAuth 2.0. The API base is https://api.xero.com/api.xro/2.0/. Endpoints include Invoices, Contacts, Payments, and BankTransactions. Connections are tenant-specific—multi-tenant apps must handle organization switching. Rate limits: 60 calls per minute per organization. ## PostgreSQL Best Practices Use connection pooling (PgBouncer) for web applications. Index foreign keys and frequently queried columns. Avoid N+1 queries—use JOINs or batch loading. For large tables, consider partitioning by date. Always use parameterized queries to prevent SQL injection. ## Redis Caching Patterns Use Redis for session storage, rate limiting, and cache-aside patterns. Set TTLs on cached data to prevent stale reads. Consider Redis Cluster for high availability. Monitor memory usage—Redis holds everything in RAM. ## HubSpot CRM Integration HubSpot offers a REST API and webhooks for real-time sync. Authentication uses private apps (access token) or OAuth for public apps. The CRM API covers contacts, companies, deals, and tickets. Use the Search API for complex queries. Webhook subscriptions require a valid endpoint that responds to verification challenges. ## Xero Accounting Integration Xero uses OAuth 2.0. The API base is https://api.xero.com/api.xro/2.0/. Endpoints include Invoices, Contacts, Payments, and BankTransactions. Connections are tenant-specific—multi-tenant apps must handle organization switching. Rate limits: 60 calls per minute per organization. ## PostgreSQL Best Practices Use connection pooling (PgBouncer) for web applications. Index foreign keys and frequently queried columns. Avoid N+1 queries—use JOINs or batch loading. For large tables, consider partitioning by date. Always use parameterized queries to prevent SQL injection. ## Redis Caching Patterns Use Redis for session storage, rate limiting, and cache-aside patterns. Set TTLs on cached data to prevent stale reads. Consider Redis Cluster for high availability. Monitor memory usage—Redis holds everything in RAM. ## HubSpot CRM Integration HubSpot offers a REST API and webhooks for real-time sync. Authentication uses private apps (access token) or OAuth for public apps. The CRM API covers contacts, companies, deals, and tickets. Use the Search API for complex queries. Webhook subscriptions require a valid endpoint that responds to verification challenges. ## Xero Accounting Integration Xero uses OAuth 2.0. The API base is https://api.xero.com/api.xro/2.0/. Endpoints include Invoices, Contacts, Payments, and BankTransactions. Connections are tenant-specific—multi-tenant apps must handle organization switching. Rate limits: 60 calls per minute per organization. ## PostgreSQL Best Practices Use connection pooling (PgBouncer) for web applications. Index foreign keys and frequently queried columns. Avoid N+1 queries—use JOINs or batch loading. For large tables, consider partitioning by date. Always use parameterized queries to prevent SQL injection. ## Redis Caching Patterns Use Redis for session storage, rate limiting, and cache-aside patterns. Set TTLs on cached data to prevent stale reads. Consider Redis Cluster for high availability. Monitor memory usage—Redis holds everything in RAM. ## HubSpot CRM Integration HubSpot offers a REST API and webhooks for real-time sync. Authentication uses private apps (access token) or OAuth for public apps. The CRM API covers contacts, companies, deals, and tickets. Use the Search API for complex queries. Webhook subscriptions require a valid endpoint that responds to verification challenges. ## Xero Accounting Integration Xero uses OAuth 2.0. The API base is https://api.xero.com/api.xro/2.0/. Endpoints include Invoices, Contacts, Payments, and BankTransactions. Connections are tenant-specific—multi-tenant apps must handle organization switching. Rate limits: 60 calls per minute per organization. ## PostgreSQL Best Practices Use connection pooling (PgBouncer) for web applications. Index foreign keys and frequently queried columns. Avoid N+1 queries—use JOINs or batch loading. For large tables, consider partitioning by date. Always use parameterized queries to prevent SQL injection. ## Redis Caching Patterns Use Redis for session storage, rate limiting, and cache-aside patterns. Set TTLs on cached data to prevent stale reads. Consider Redis Cluster for high availability. Monitor memory usage—Redis holds everything in RAM. ## HubSpot CRM Integration HubSpot offers a REST API and webhooks for real-time sync. Authentication uses private apps (access token) or OAuth for public apps. The CRM API covers contacts, companies, deals, and tickets. Use the Search API for complex queries. Webhook subscriptions require a valid endpoint that responds to verification challenges. ## Xero Accounting Integration Xero uses OAuth 2.0. The API base is https://api.xero.com/api.xro/2.0/. Endpoints include Invoices, Contacts, Payments, and BankTransactions. Connections are tenant-specific—multi-tenant apps must handle organization switching. Rate limits: 60 calls per minute per organization. ## PostgreSQL Best Practices Use connection pooling (PgBouncer) for web applications. Index foreign keys and frequently queried columns. Avoid N+1 queries—use JOINs or batch loading. For large tables, consider partitioning by date. Always use parameterized queries to prevent SQL injection. ## Redis Caching Patterns Use Redis for session storage, rate limiting, and cache-aside patterns. Set TTLs on cached data to prevent stale reads. Consider Redis Cluster for high availability. Monitor memory usage—Redis holds everything in RAM. ## HubSpot CRM Integration HubSpot offers a REST API and webhooks for real-time sync. Authentication uses private apps (access token) or OAuth for public apps. The CRM API covers contacts, companies, deals, and tickets. Use the Search API for complex queries. Webhook subscriptions require a valid endpoint that responds to verification challenges. ## Xero Accounting Integration Xero uses OAuth 2.0. The API base is https://api.xero.com/api.xro/2.0/. Endpoints include Invoices, Contacts, Payments, and BankTransactions. Connections are tenant-specific—multi-tenant apps must handle organization switching. Rate limits: 60 calls per minute per organization. ## PostgreSQL Best Practices Use connection pooling (PgBouncer) for web applications. Index foreign keys and frequently queried columns. Avoid N+1 queries—use JOINs or batch loading. For large tables, consider partitioning by date. Always use parameterized queries to prevent SQL injection. ## Redis Caching Patterns Use Redis for session storage, rate limiting, and cache-aside patterns. Set TTLs on cached data to prevent stale reads. Consider Redis Cluster for high availability. Monitor memory usage—Redis holds everything in RAM. ## HubSpot CRM Integration HubSpot offers a REST API and webhooks for real-time sync. Authentication uses private apps (access token) or OAuth for public apps. The CRM API covers contacts, companies, deals, and tickets. Use the Search API for complex queries. Webhook subscriptions require a valid endpoint that responds to verification challenges. ## Xero Accounting Integration Xero uses OAuth 2.0. The API base is https://api.xero.com/api.xro/2.0/. Endpoints include Invoices, Contacts, Payments, and BankTransactions. Connections are tenant-specific—multi-tenant apps must handle organization switching. Rate limits: 60 calls per minute per organization. ## PostgreSQL Best Practices Use connection pooling (PgBouncer) for web applications. Index foreign keys and frequently queried columns. Avoid N+1 queries—use JOINs or batch loading. For large tables, consider partitioning by date. Always use parameterized queries to prevent SQL injection. ## Redis Caching Patterns Use Redis for session storage, rate limiting, and cache-aside patterns. Set TTLs on cached data to prevent stale reads. Consider Redis Cluster for high availability. Monitor memory usage—Redis holds everything in RAM. ## HubSpot CRM Integration HubSpot offers a REST API and webhooks for real-time sync. Authentication uses private apps (access token) or OAuth for public apps. The CRM API covers contacts, companies, deals, and tickets. Use the Search API for complex queries. Webhook subscriptions require a valid endpoint that responds to verification challenges. ## Xero Accounting Integration Xero uses OAuth 2.0. The API base is https://api.xero.com/api.xro/2.0/. Endpoints include Invoices, Contacts, Payments, and BankTransactions. Connections are tenant-specific—multi-tenant apps must handle organization switching. Rate limits: 60 calls per minute per organization. ## PostgreSQL Best Practices Use connection pooling (PgBouncer) for web applications. Index foreign keys and frequently queried columns. Avoid N+1 queries—use JOINs or batch loading. For large tables, consider partitioning by date. Always use parameterized queries to prevent SQL injection. ## Redis Caching Patterns Use Redis for session storage, rate limiting, and cache-aside patterns. Set TTLs on cached data to prevent stale reads. Consider Redis Cluster for high availability. Monitor memory usage—Redis holds everything in RAM. ## HubSpot CRM Integration HubSpot offers a REST API and webhooks for real-time sync. Authentication uses private apps (access token) or OAuth for public apps. The CRM API covers contacts, companies, deals, and tickets. Use the Search API for complex queries. Webhook subscriptions require a valid endpoint that responds to verification challenges. ## Xero Accounting Integration Xero uses OAuth 2.0. The API base is https://api.xero.com/api.xro/2.0/. Endpoints include Invoices, Contacts, Payments, and BankTransactions. Connections are tenant-specific—multi-tenant apps must handle organization switching. Rate limits: 60 calls per minute per organization. ## PostgreSQL Best Practices Use connection pooling (PgBouncer) for web applications. Index foreign keys and frequently queried columns. Avoid N+1 queries—use JOINs or batch loading. For large tables, consider partitioning by date. Always use parameterized queries to prevent SQL injection. ## Redis Caching Patterns Use Redis for session storage, rate limiting, and cache-aside patterns. Set TTLs on cached data to prevent stale reads. Consider Redis Cluster for high availability. Monitor memory usage—Redis holds everything in RAM. ## HubSpot CRM Integration HubSpot offers a REST API and webhooks for real-time sync. Authentication uses private apps (access token) or OAuth for public apps. The CRM API covers contacts, companies, deals, and tickets. Use the Search API for complex queries. Webhook subscriptions require a valid endpoint that responds to verification challenges. ## Xero Accounting Integration Xero uses OAuth 2.0. The API base is https://api.xero.com/api.xro/2.0/. Endpoints include Invoices, Contacts, Payments, and BankTransactions. Connections are tenant-specific—multi-tenant apps must handle organization switching. Rate limits: 60 calls per minute per organization. ## PostgreSQL Best Practices Use connection pooling (PgBouncer) for web applications. Index foreign keys and frequently queried columns. Avoid N+1 queries—use JOINs or batch loading. For large tables, consider partitioning by date. Always use parameterized queries to prevent SQL injection. ## Redis Caching Patterns Use Redis for session storage, rate limiting, and cache-aside patterns. Set TTLs on cached data to prevent stale reads. Consider Redis Cluster for high availability. Monitor memory usage—Redis holds everything in RAM. ## HubSpot CRM Integration HubSpot offers a REST API and webhooks for real-time sync. Authentication uses private apps (access token) or OAuth for public apps. The CRM API covers contacts, companies, deals, and tickets. Use the Search API for complex queries. Webhook subscriptions require a valid endpoint that responds to verification challenges. ## Xero Accounting Integration Xero uses OAuth 2.0. The API base is https://api.xero.com/api.xro/2.0/. Endpoints include Invoices, Contacts, Payments, and BankTransactions. Connections are tenant-specific—multi-tenant apps must handle organization switching. Rate limits: 60 calls per minute per organization. ## PostgreSQL Best Practices Use connection pooling (PgBouncer) for web applications. Index foreign keys and frequently queried columns. Avoid N+1 queries—use JOINs or batch loading. For large tables, consider partitioning by date. Always use parameterized queries to prevent SQL injection. ## Redis Caching Patterns Use Redis for session storage, rate limiting, and cache-aside patterns. Set TTLs on cached data to prevent stale reads. Consider Redis Cluster for high availability. Monitor memory usage—Redis holds everything in RAM. ## HubSpot CRM Integration HubSpot offers a REST API and webhooks for real-time sync. Authentication uses private apps (access token) or OAuth for public apps. The CRM API covers contacts, companies, deals, and tickets. Use the Search API for complex queries. Webhook subscriptions require a valid endpoint that responds to verification challenges. ## Xero Accounting Integration Xero uses OAuth 2.0. The API base is https://api.xero.com/api.xro/2.0/. Endpoints include Invoices, Contacts, Payments, and BankTransactions. Connections are tenant-specific—multi-tenant apps must handle organization switching. Rate limits: 60 calls per minute per organization. ## PostgreSQL Best Practices Use connection pooling (PgBouncer) for web applications. Index foreign keys and frequently queried columns. Avoid N+1 queries—use JOINs or batch loading. For large tables, consider partitioning by date. Always use parameterized queries to prevent SQL injection. ## Redis Caching Patterns Use Redis for session storage, rate limiting, and cache-aside patterns. Set TTLs on cached data to prevent stale reads. Consider Redis Cluster for high availability. Monitor memory usage—Redis holds everything in RAM. ## HubSpot CRM Integration HubSpot offers a REST API and webhooks for real-time sync. Authentication uses private apps (access token) or OAuth for public apps. The CRM API covers contacts, companies, deals, and tickets. Use the Search API for complex queries. Webhook subscriptions require a valid endpoint that responds to verification challenges. ## Xero Accounting Integration Xero uses OAuth 2.0. The API base is https://api.xero.com/api.xro/2.0/. Endpoints include Invoices, Contacts, Payments, and BankTransactions. Connections are tenant-specific—multi-tenant apps must handle organization switching. Rate limits: 60 calls per minute per organization. ## PostgreSQL Best Practices Use connection pooling (PgBouncer) for web applications. Index foreign keys and frequently queried columns. Avoid N+1 queries—use JOINs or batch loading. For large tables, consider partitioning by date. Always use parameterized queries to prevent SQL injection. ## Redis Caching Patterns Use Redis for session storage, rate limiting, and cache-aside patterns. Set TTLs on cached data to prevent stale reads. Consider Redis Cluster for high availability. Monitor memory usage—Redis holds everything in RAM. ## HubSpot CRM Integration HubSpot offers a REST API and webhooks for real-time sync. Authentication uses private apps (access token) or OAuth for public apps. The CRM API covers contacts, companies, deals, and tickets. Use the Search API for complex queries. Webhook subscriptions require a valid endpoint that responds to verification challenges. ## Xero Accounting Integration Xero uses OAuth 2.0. The API base is https://api.xero.com/api.xro/2.0/. Endpoints include Invoices, Contacts, Payments, and BankTransactions. Connections are tenant-specific—multi-tenant apps must handle organization switching. Rate limits: 60 calls per minute per organization. ## PostgreSQL Best Practices Use connection pooling (PgBouncer) for web applications. Index foreign keys and frequently queried columns. Avoid N+1 queries—use JOINs or batch loading. For large tables, consider partitioning by date. Always use parameterized queries to prevent SQL injection. ## Redis Caching Patterns Use Redis for session storage, rate limiting, and cache-aside patterns. Set TTLs on cached data to prevent stale reads. Consider Redis Cluster for high availability. Monitor memory usage—Redis holds everything in RAM. ## HubSpot CRM Integration HubSpot offers a REST API and webhooks for real-time sync. Authentication uses private apps (access token) or OAuth for public apps. The CRM API covers contacts, companies, deals, and tickets. Use the Search API for complex queries. Webhook subscriptions require a valid endpoint that responds to verification challenges. ## Xero Accounting Integration Xero uses OAuth 2.0. The API base is https://api.xero.com/api.xro/2.0/. Endpoints include Invoices, Contacts, Payments, and BankTransactions. Connections are tenant-specific—multi-tenant apps must handle organization switching. Rate limits: 60 calls per minute per organization. ## PostgreSQL Best Practices Use connection pooling (PgBouncer) for web applications. Index foreign keys and frequently queried columns. Avoid N+1 queries—use JOINs or batch loading. For large tables, consider partitioning by date. Always use parameterized queries to prevent SQL injection. ## Redis Caching Patterns Use Redis for session storage, rate limiting, and cache-aside patterns. Set TTLs on cached data to prevent stale reads. Consider Redis Cluster for high availability. Monitor memory usage—Redis holds everything in RAM. ## HubSpot CRM Integration HubSpot offers a REST API and webhooks for real-time sync. Authentication uses private apps (access token) or OAuth for public apps. The CRM API covers contacts, companies, deals, and tickets. Use the Search API for complex queries. Webhook subscriptions require a valid endpoint that responds to verification challenges. ## Xero Accounting Integration Xero uses OAuth 2.0. The API base is https://api.xero.com/api.xro/2.0/. Endpoints include Invoices, Contacts, Payments, and BankTransactions. Connections are tenant-specific—multi-tenant apps must handle organization switching. Rate limits: 60 calls per minute per organization. ## PostgreSQL Best Practices Use connection pooling (PgBouncer) for web applications. Index foreign keys and frequently queried columns. Avoid N+1 queries—use JOINs or batch loading. For large tables, consider partitioning by date. Always use parameterized queries to prevent SQL injection. ## Redis Caching Patterns Use Redis for session storage, rate limiting, and cache-aside patterns. Set TTLs on cached data to prevent stale reads. Consider Redis Cluster for high availability. Monitor memory usage—Redis holds everything in RAM. ## HubSpot CRM Integration HubSpot offers a REST API and webhooks for real-time sync. Authentication uses private apps (access token) or OAuth for public apps. The CRM API covers contacts, companies, deals, and tickets. Use the Search API for complex queries. Webhook subscriptions require a valid endpoint that responds to verification challenges. ## Xero Accounting Integration Xero uses OAuth 2.0. The API base is https://api.xero.com/api.xro/2.0/. Endpoints include Invoices, Contacts, Payments, and BankTransactions. Connections are tenant-specific—multi-tenant apps must handle organization switching. Rate limits: 60 calls per minute per organization. ## PostgreSQL Best Practices Use connection pooling (PgBouncer) for web applications. Index foreign keys and frequently queried columns. Avoid N+1 queries—use JOINs or batch loading. For large tables, consider partitioning by date. Always use parameterized queries to prevent SQL injection. ## Redis Caching Patterns Use Redis for session storage, rate limiting, and cache-aside patterns. Set TTLs on cached data to prevent stale reads. Consider Redis Cluster for high availability. Monitor memory usage—Redis holds everything in RAM. ## HubSpot CRM Integration HubSpot offers a REST API and webhooks for real-time sync. Authentication uses private apps (access token) or OAuth for public apps. The CRM API covers contacts, companies, deals, and tickets. Use the Search API for complex queries. Webhook subscriptions require a valid endpoint that responds to verification challenges. ## Xero Accounting Integration Xero uses OAuth 2.0. The API base is https://api.xero.com/api.xro/2.0/. Endpoints include Invoices, Contacts, Payments, and BankTransactions. Connections are tenant-specific—multi-tenant apps must handle organization switching. Rate limits: 60 calls per minute per organization. ## PostgreSQL Best Practices Use connection pooling (PgBouncer) for web applications. Index foreign keys and frequently queried columns. Avoid N+1 queries—use JOINs or batch loading. For large tables, consider partitioning by date. Always use parameterized queries to prevent SQL injection. ## Redis Caching Patterns Use Redis for session storage, rate limiting, and cache-aside patterns. Set TTLs on cached data to prevent stale reads. Consider Redis Cluster for high availability. Monitor memory usage—Redis holds everything in RAM. ## HubSpot CRM Integration HubSpot offers a REST API and webhooks for real-time sync. Authentication uses private apps (access token) or OAuth for public apps. The CRM API covers contacts, companies, deals, and tickets. Use the Search API for complex queries. Webhook subscriptions require a valid endpoint that responds to verification challenges. ## Xero Accounting Integration Xero uses OAuth 2.0. The API base is https://api.xero.com/api.xro/2.0/. Endpoints include Invoices, Contacts, Payments, and BankTransactions. Connections are tenant-specific—multi-tenant apps must handle organization switching. Rate limits: 60 calls per minute per organization. ## PostgreSQL Best Practices Use connection pooling (PgBouncer) for web applications. Index foreign keys and frequently queried columns. Avoid N+1 queries—use JOINs or batch loading. For large tables, consider partitioning by date. Always use parameterized queries to prevent SQL injection. ## Redis Caching Patterns Use Redis for session storage, rate limiting, and cache-aside patterns. Set TTLs on cached data to prevent stale reads. Consider Redis Cluster for high availability. Monitor memory usage—Redis holds everything in RAM. ## HubSpot CRM Integration HubSpot offers a REST API and webhooks for real-time sync. Authentication uses private apps (access token) or OAuth for public apps. The CRM API covers contacts, companies, deals, and tickets. Use the Search API for complex queries. Webhook subscriptions require a valid endpoint that responds to verification challenges. ## Xero Accounting Integration Xero uses OAuth 2.0. The API base is https://api.xero.com/api.xro/2.0/. Endpoints include Invoices, Contacts, Payments, and BankTransactions. Connections are tenant-specific—multi-tenant apps must handle organization switching. Rate limits: 60 calls per minute per organization. ## PostgreSQL Best Practices Use connection pooling (PgBouncer) for web applications. Index foreign keys and frequently queried columns. Avoid N+1 queries—use JOINs or batch loading. For large tables, consider partitioning by date. Always use parameterized queries to prevent SQL injection. ## Redis Caching Patterns Use Redis for session storage, rate limiting, and cache-aside patterns. Set TTLs on cached data to prevent stale reads. Consider Redis Cluster for high availability. Monitor memory usage—Redis holds everything in RAM. ## HubSpot CRM Integration HubSpot offers a REST API and webhooks for real-time sync. Authentication uses private apps (access token) or OAuth for public apps. The CRM API covers contacts, companies, deals, and tickets. Use the Search API for complex queries. Webhook subscriptions require a valid endpoint that responds to verification challenges. ## Xero Accounting Integration Xero uses OAuth 2.0. The API base is https://api.xero.com/api.xro/2.0/. Endpoints include Invoices, Contacts, Payments, and BankTransactions. Connections are tenant-specific—multi-tenant apps must handle organization switching. Rate limits: 60 calls per minute per organization. ## PostgreSQL Best Practices Use connection pooling (PgBouncer) for web applications. Index foreign keys and frequently queried columns. Avoid N+1 queries—use JOINs or batch loading. For large tables, consider partitioning by date. Always use parameterized queries to prevent SQL injection. ## Redis Caching Patterns Use Redis for session storage, rate limiting, and cache-aside patterns. Set TTLs on cached data to prevent stale reads. Consider Redis Cluster for high availability. Monitor memory usage—Redis holds everything in RAM. ## HubSpot CRM Integration HubSpot offers a REST API and webhooks for real-time sync. Authentication uses private apps (access token) or OAuth for public apps. The CRM API covers contacts, companies, deals, and tickets. Use the Search API for complex queries. Webhook subscriptions require a valid endpoint that responds to verification challenges. ## Xero Accounting Integration Xero uses OAuth 2.0. The API base is https://api.xero.com/api.xro/2.0/. Endpoints include Invoices, Contacts, Payments, and BankTransactions. Connections are tenant-specific—multi-tenant apps must handle organization switching. Rate limits: 60 calls per minute per organization. ## PostgreSQL Best Practices Use connection pooling (PgBouncer) for web applications. Index foreign keys and frequently queried columns. Avoid N+1 queries—use JOINs or batch loading. For large tables, consider partitioning by date. Always use parameterized queries to prevent SQL injection. ## Redis Caching Patterns Use Redis for session storage, rate limiting, and cache-aside patterns. Set TTLs on cached data to prevent stale reads. Consider Redis Cluster for high availability. Monitor memory usage—Redis holds everything in RAM. ## HubSpot CRM Integration HubSpot offers a REST API and webhooks for real-time sync. Authentication uses private apps (access token) or OAuth for public apps. The CRM API covers contacts, companies, deals, and tickets. Use the Search API for complex queries. Webhook subscriptions require a valid endpoint that responds to verification challenges. ## Xero Accounting Integration Xero uses OAuth 2.0. The API base is https://api.xero.com/api.xro/2.0/. Endpoints include Invoices, Contacts, Payments, and BankTransactions. Connections are tenant-specific—multi-tenant apps must handle organization switching. Rate limits: 60 calls per minute per organization. ## PostgreSQL Best Practices Use connection pooling (PgBouncer) for web applications. Index foreign keys and frequently queried columns. Avoid N+1 queries—use JOINs or batch loading. For large tables, consider partitioning by date. Always use parameterized queries to prevent SQL injection. ## Redis Caching Patterns Use Redis for session storage, rate limiting, and cache-aside patterns. Set TTLs on cached data to prevent stale reads. Consider Redis Cluster for high availability. Monitor memory usage—Redis holds everything in RAM. ## HubSpot CRM Integration HubSpot offers a REST API and webhooks for real-time sync. Authentication uses private apps (access token) or OAuth for public apps. The CRM API covers contacts, companies, deals, and tickets. Use the Search API for complex queries. Webhook subscriptions require a valid endpoint that responds to verification challenges. ## Xero Accounting Integration Xero uses OAuth 2.0. The API base is https://api.xero.com/api.xro/2.0/. Endpoints include Invoices, Contacts, Payments, and BankTransactions. Connections are tenant-specific—multi-tenant apps must handle organization switching. Rate limits: 60 calls per minute per organization. ## PostgreSQL Best Practices Use connection pooling (PgBouncer) for web applications. Index foreign keys and frequently queried columns. Avoid N+1 queries—use JOINs or batch loading. For large tables, consider partitioning by date. Always use parameterized queries to prevent SQL injection. ## Redis Caching Patterns Use Redis for session storage, rate limiting, and cache-aside patterns. Set TTLs on cached data to prevent stale reads. Consider Redis Cluster for high availability. Monitor memory usage—Redis holds everything in RAM. ## HubSpot CRM Integration HubSpot offers a REST API and webhooks for real-time sync. Authentication uses private apps (access token) or OAuth for public apps. The CRM API covers contacts, companies, deals, and tickets. Use the Search API for complex queries. Webhook subscriptions require a valid endpoint that responds to verification challenges. ## Xero Accounting Integration Xero uses OAuth 2.0. The API base is https://api.xero.com/api.xro/2.0/. Endpoints include Invoices, Contacts, Payments, and BankTransactions. Connections are tenant-specific—multi-tenant apps must handle organization switching. Rate limits: 60 calls per minute per organization. ## PostgreSQL Best Practices Use connection pooling (PgBouncer) for web applications. Index foreign keys and frequently queried columns. Avoid N+1 queries—use JOINs or batch loading. For large tables, consider partitioning by date. Always use parameterized queries to prevent SQL injection. ## Redis Caching Patterns Use Redis for session storage, rate limiting, and cache-aside patterns. Set TTLs on cached data to prevent stale reads. Consider Redis Cluster for high availability. Monitor memory usage—Redis holds everything in RAM. ## HubSpot CRM Integration HubSpot offers a REST API and webhooks for real-time sync. Authentication uses private apps (access token) or OAuth for public apps. The CRM API covers contacts, companies, deals, and tickets. Use the Search API for complex queries. Webhook subscriptions require a valid endpoint that responds to verification challenges. ## Xero Accounting Integration Xero uses OAuth 2.0. The API base is https://api.xero.com/api.xro/2.0/. Endpoints include Invoices, Contacts, Payments, and BankTransactions. Connections are tenant-specific—multi-tenant apps must handle organization switching. Rate limits: 60 calls per minute per organization. ## PostgreSQL Best Practices Use connection pooling (PgBouncer) for web applications. Index foreign keys and frequently queried columns. Avoid N+1 queries—use JOINs or batch loading. For large tables, consider partitioning by date. Always use parameterized queries to prevent SQL injection. ## Redis Caching Patterns Use Redis for session storage, rate limiting, and cache-aside patterns. Set TTLs on cached data to prevent stale reads. Consider Redis Cluster for high availability. Monitor memory usage—Redis holds everything in RAM. ## HubSpot CRM Integration HubSpot offers a REST API and webhooks for real-time sync. Authentication uses private apps (access token) or OAuth for public apps. The CRM API covers contacts, companies, deals, and tickets. Use the Search API for complex queries. Webhook subscriptions require a valid endpoint that responds to verification challenges. ## Xero Accounting Integration Xero uses OAuth 2.0. The API base is https://api.xero.com/api.xro/2.0/. Endpoints include Invoices, Contacts, Payments, and BankTransactions. Connections are tenant-specific—multi-tenant apps must handle organization switching. Rate limits: 60 calls per minute per organization. ## PostgreSQL Best Practices Use connection pooling (PgBouncer) for web applications. Index foreign keys and frequently queried columns. Avoid N+1 queries—use JOINs or batch loading. For large tables, consider partitioning by date. Always use parameterized queries to prevent SQL injection. ## Redis Caching Patterns Use Redis for session storage, rate limiting, and cache-aside patterns. Set TTLs on cached data to prevent stale reads. Consider Redis Cluster for high availability. Monitor memory usage—Redis holds everything in RAM. ## HubSpot CRM Integration HubSpot offers a REST API and webhooks for real-time sync. Authentication uses private apps (access token) or OAuth for public apps. The CRM API covers contacts, companies, deals, and tickets. Use the Search API for complex queries. Webhook subscriptions require a valid endpoint that responds to verification challenges. ## Xero Accounting Integration Xero uses OAuth 2.0. The API base is https://api.xero.com/api.xro/2.0/. Endpoints include Invoices, Contacts, Payments, and BankTransactions. Connections are tenant-specific—multi-tenant apps must handle organization switching. Rate limits: 60 calls per minute per organization. ## PostgreSQL Best Practices Use connection pooling (PgBouncer) for web applications. Index foreign keys and frequently queried columns. Avoid N+1 queries—use JOINs or batch loading. For large tables, consider partitioning by date. Always use parameterized queries to prevent SQL injection. ## Redis Caching Patterns Use Redis for session storage, rate limiting, and cache-aside patterns. Set TTLs on cached data to prevent stale reads. Consider Redis Cluster for high availability. Monitor memory usage—Redis holds everything in RAM. ## HubSpot CRM Integration HubSpot offers a REST API and webhooks for real-time sync. Authentication uses private apps (access token) or OAuth for public apps. The CRM API covers contacts, companies, deals, and tickets. Use the Search API for complex queries. Webhook subscriptions require a valid endpoint that responds to verification challenges. ## Xero Accounting Integration Xero uses OAuth 2.0. The API base is https://api.xero.com/api.xro/2.0/. Endpoints include Invoices, Contacts, Payments, and BankTransactions. Connections are tenant-specific—multi-tenant apps must handle organization switching. Rate limits: 60 calls per minute per organization. ## PostgreSQL Best Practices Use connection pooling (PgBouncer) for web applications. Index foreign keys and frequently queried columns. Avoid N+1 queries—use JOINs or batch loading. For large tables, consider partitioning by date. Always use parameterized queries to prevent SQL injection. ## Redis Caching Patterns Use Redis for session storage, rate limiting, and cache-aside patterns. Set TTLs on cached data to prevent stale reads. Consider Redis Cluster for high availability. Monitor memory usage—Redis holds everything in RAM. ## HubSpot CRM Integration HubSpot offers a REST API and webhooks for real-time sync. Authentication uses private apps (access token) or OAuth for public apps. The CRM API covers contacts, companies, deals, and tickets. Use the Search API for complex queries. Webhook subscriptions require a valid endpoint that responds to verification challenges. ## Xero Accounting Integration Xero uses OAuth 2.0. The API base is https://api.xero.com/api.xro/2.0/. Endpoints include Invoices, Contacts, Payments, and BankTransactions. Connections are tenant-specific—multi-tenant apps must handle organization switching. Rate limits: 60 calls per minute per organization. ## PostgreSQL Best Practices Use connection pooling (PgBouncer) for web applications. Index foreign keys and frequently queried columns. Avoid N+1 queries—use JOINs or batch loading. For large tables, consider partitioning by date. Always use parameterized queries to prevent SQL injection. ## Redis Caching Patterns Use Redis for session storage, rate limiting, and cache-aside patterns. Set TTLs on cached data to prevent stale reads. Consider Redis Cluster for high availability. Monitor memory usage—Redis holds everything in RAM. ## HubSpot CRM Integration HubSpot offers a REST API and webhooks for real-time sync. Authentication uses private apps (access token) or OAuth for public apps. The CRM API covers contacts, companies, deals, and tickets. Use the Search API for complex queries. Webhook subscriptions require a valid endpoint that responds to verification challenges. ## Xero Accounting Integration Xero uses OAuth 2.0. The API base is https://api.xero.com/api.xro/2.0/. Endpoints include Invoices, Contacts, Payments, and BankTransactions. Connections are tenant-specific—multi-tenant apps must handle organization switching. Rate limits: 60 calls per minute per organization. ## PostgreSQL Best Practices Use connection pooling (PgBouncer) for web applications. Index foreign keys and frequently queried columns. Avoid N+1 queries—use JOINs or batch loading. For large tables, consider partitioning by date. Always use parameterized queries to prevent SQL injection. ## Redis Caching Patterns Use Redis for session storage, rate limiting, and cache-aside patterns. Set TTLs on cached data to prevent stale reads. Consider Redis Cluster for high availability. Monitor memory usage—Redis holds everything in RAM. ## HubSpot CRM Integration HubSpot offers a REST API and webhooks for real-time sync. Authentication uses private apps (access token) or OAuth for public apps. The CRM API covers contacts, companies, deals, and tickets. Use the Search API for complex queries. Webhook subscriptions require a valid endpoint that responds to verification challenges. ## Xero Accounting Integration Xero uses OAuth 2.0. The API base is https://api.xero.com/api.xro/2.0/. Endpoints include Invoices, Contacts, Payments, and BankTransactions. Connections are tenant-specific—multi-tenant apps must handle organization switching. Rate limits: 60 calls per minute per organization. ## PostgreSQL Best Practices Use connection pooling (PgBouncer) for web applications. Index foreign keys and frequently queried columns. Avoid N+1 queries—use JOINs or batch loading. For large tables, consider partitioning by date. Always use parameterized queries to prevent SQL injection. ## Redis Caching Patterns Use Redis for session storage, rate limiting, and cache-aside patterns. Set TTLs on cached data to prevent stale reads. Consider Redis Cluster for high availability. Monitor memory usage—Redis holds everything in RAM. ## HubSpot CRM Integration HubSpot offers a REST API and webhooks for real-time sync. Authentication uses private apps (access token) or OAuth for public apps. The CRM API covers contacts, companies, deals, and tickets. Use the Search API for complex queries. Webhook subscriptions require a valid endpoint that responds to verification challenges. ## Xero Accounting Integration Xero uses OAuth 2.0. The API base is https://api.xero.com/api.xro/2.0/. Endpoints include Invoices, Contacts, Payments, and BankTransactions. Connections are tenant-specific—multi-tenant apps must handle organization switching. Rate limits: 60 calls per minute per organization. ## PostgreSQL Best Practices Use connection pooling (PgBouncer) for web applications. Index foreign keys and frequently queried columns. Avoid N+1 queries—use JOINs or batch loading. For large tables, consider partitioning by date. Always use parameterized queries to prevent SQL injection. ## Redis Caching Patterns Use Redis for session storage, rate limiting, and cache-aside patterns. Set TTLs on cached data to prevent stale reads. Consider Redis Cluster for high availability. Monitor memory usage—Redis holds everything in RAM. ## HubSpot CRM Integration HubSpot offers a REST API and webhooks for real-time sync. Authentication uses private apps (access token) or OAuth for public apps. The CRM API covers contacts, companies, deals, and tickets. Use the Search API for complex queries. Webhook subscriptions require a valid endpoint that responds to verification challenges. ## Xero Accounting Integration Xero uses OAuth 2.0. The API base is https://api.xero.com/api.xro/2.0/. Endpoints include Invoices, Contacts, Payments, and BankTransactions. Connections are tenant-specific—multi-tenant apps must handle organization switching. Rate limits: 60 calls per minute per organization. ## PostgreSQL Best Practices Use connection pooling (PgBouncer) for web applications. Index foreign keys and frequently queried columns. Avoid N+1 queries—use JOINs or batch loading. For large tables, consider partitioning by date. Always use parameterized queries to prevent SQL injection. ## Redis Caching Patterns Use Redis for session storage, rate limiting, and cache-aside patterns. Set TTLs on cached data to prevent stale reads. Consider Redis Cluster for high availability. Monitor memory usage—Redis holds everything in RAM. ## HubSpot CRM Integration HubSpot offers a REST API and webhooks for real-time sync. Authentication uses private apps (access token) or OAuth for public apps. The CRM API covers contacts, companies, deals, and tickets. Use the Search API for complex queries. Webhook subscriptions require a valid endpoint that responds to verification challenges. ## Xero Accounting Integration Xero uses OAuth 2.0. The API base is https://api.xero.com/api.xro/2.0/. Endpoints include Invoices, Contacts, Payments, and BankTransactions. Connections are tenant-specific—multi-tenant apps must handle organization switching. Rate limits: 60 calls per minute per organization. ## PostgreSQL Best Practices Use connection pooling (PgBouncer) for web applications. Index foreign keys and frequently queried columns. Avoid N+1 queries—use JOINs or batch loading. For large tables, consider partitioning by date. Always use parameterized queries to prevent SQL injection. ## Redis Caching Patterns Use Redis for session storage, rate limiting, and cache-aside patterns. Set TTLs on cached data to prevent stale reads. Consider Redis Cluster for high availability. Monitor memory usage—Redis holds everything in RAM. ## HubSpot CRM Integration HubSpot offers a REST API and webhooks for real-time sync. Authentication uses private apps (access token) or OAuth for public apps. The CRM API covers contacts, companies, deals, and tickets. Use the Search API for complex queries. Webhook subscriptions require a valid endpoint that responds to verification challenges. ## Xero Accounting Integration Xero uses OAuth 2.0. The API base is https://api.xero.com/api.xro/2.0/. Endpoints include Invoices, Contacts, Payments, and BankTransactions. Connections are tenant-specific—multi-tenant apps must handle organization switching. Rate limits: 60 calls per minute per organization. ## PostgreSQL Best Practices Use connection pooling (PgBouncer) for web applications. Index foreign keys and frequently queried columns. Avoid N+1 queries—use JOINs or batch loading. For large tables, consider partitioning by date. Always use parameterized queries to prevent SQL injection. ## Redis Caching Patterns Use Redis for session storage, rate limiting, and cache-aside patterns. Set TTLs on cached data to prevent stale reads. Consider Redis Cluster for high availability. Monitor memory usage—Redis holds everything in RAM. ## HubSpot CRM Integration HubSpot offers a REST API and webhooks for real-time sync. Authentication uses private apps (access token) or OAuth for public apps. The CRM API covers contacts, companies, deals, and tickets. Use the Search API for complex queries. Webhook subscriptions require a valid endpoint that responds to verification challenges. ## Xero Accounting Integration Xero uses OAuth 2.0. The API base is https://api.xero.com/api.xro/2.0/. Endpoints include Invoices, Contacts, Payments, and BankTransactions. Connections are tenant-specific—multi-tenant apps must handle organization switching. Rate limits: 60 calls per minute per organization. ## PostgreSQL Best Practices Use connection pooling (PgBouncer) for web applications. Index foreign keys and frequently queried columns. Avoid N+1 queries—use JOINs or batch loading. For large tables, consider partitioning by date. Always use parameterized queries to prevent SQL injection. ## Redis Caching Patterns Use Redis for session storage, rate limiting, and cache-aside patterns. Set TTLs on cached data to prevent stale reads. Consider Redis Cluster for high availability. Monitor memory usage—Redis holds everything in RAM. ## HubSpot CRM Integration HubSpot offers a REST API and webhooks for real-time sync. Authentication uses private apps (access token) or OAuth for public apps. The CRM API covers contacts, companies, deals, and tickets. Use the Search API for complex queries. Webhook subscriptions require a valid endpoint that responds to verification challenges. ## Xero Accounting Integration Xero uses OAuth 2.0. The API base is https://api.xero.com/api.xro/2.0/. Endpoints include Invoices, Contacts, Payments, and BankTransactions. Connections are tenant-specific—multi-tenant apps must handle organization switching. Rate limits: 60 calls per minute per organization. ## PostgreSQL Best Practices Use connection pooling (PgBouncer) for web applications. Index foreign keys and frequently queried columns. Avoid N+1 queries—use JOINs or batch loading. For large tables, consider partitioning by date. Always use parameterized queries to prevent SQL injection. ## Redis Caching Patterns Use Redis for session storage, rate limiting, and cache-aside patterns. Set TTLs on cached data to prevent stale reads. Consider Redis Cluster for high availability. Monitor memory usage—Redis holds everything in RAM. ## HubSpot CRM Integration HubSpot offers a REST API and webhooks for real-time sync. Authentication uses private apps (access token) or OAuth for public apps. The CRM API covers contacts, companies, deals, and tickets. Use the Search API for complex queries. Webhook subscriptions require a valid endpoint that responds to verification challenges. ## Xero Accounting Integration Xero uses OAuth 2.0. The API base is https://api.xero.com/api.xro/2.0/. Endpoints include Invoices, Contacts, Payments, and BankTransactions. Connections are tenant-specific—multi-tenant apps must handle organization switching. Rate limits: 60 calls per minute per organization. ## PostgreSQL Best Practices Use connection pooling (PgBouncer) for web applications. Index foreign keys and frequently queried columns. Avoid N+1 queries—use JOINs or batch loading. For large tables, consider partitioning by date. Always use parameterized queries to prevent SQL injection. ## Redis Caching Patterns Use Redis for session storage, rate limiting, and cache-aside patterns. Set TTLs on cached data to prevent stale reads. Consider Redis Cluster for high availability. Monitor memory usage—Redis holds everything in RAM. ## HubSpot CRM Integration HubSpot offers a REST API and webhooks for real-time sync. Authentication uses private apps (access token) or OAuth for public apps. The CRM API covers contacts, companies, deals, and tickets. Use the Search API for complex queries. Webhook subscriptions require a valid endpoint that responds to verification challenges. ## Xero Accounting Integration Xero uses OAuth 2.0. The API base is https://api.xero.com/api.xro/2.0/. Endpoints include Invoices, Contacts, Payments, and BankTransactions. Connections are tenant-specific—multi-tenant apps must handle organization switching. Rate limits: 60 calls per minute per organization. ## PostgreSQL Best Practices Use connection pooling (PgBouncer) for web applications. Index foreign keys and frequently queried columns. Avoid N+1 queries—use JOINs or batch loading. For large tables, consider partitioning by date. Always use parameterized queries to prevent SQL injection. ## Redis Caching Patterns Use Redis for session storage, rate limiting, and cache-aside patterns. Set TTLs on cached data to prevent stale reads. Consider Redis Cluster for high availability. Monitor memory usage—Redis holds everything in RAM. ## HubSpot CRM Integration HubSpot offers a REST API and webhooks for real-time sync. Authentication uses private apps (access token) or OAuth for public apps. The CRM API covers contacts, companies, deals, and tickets. Use the Search API for complex queries. Webhook subscriptions require a valid endpoint that responds to verification challenges. ## Xero Accounting Integration Xero uses OAuth 2.0. The API base is https://api.xero.com/api.xro/2.0/. Endpoints include Invoices, Contacts, Payments, and BankTransactions. Connections are tenant-specific—multi-tenant apps must handle organization switching. Rate limits: 60 calls per minute per organization. ## PostgreSQL Best Practices Use connection pooling (PgBouncer) for web applications. Index foreign keys and frequently queried columns. Avoid N+1 queries—use JOINs or batch loading. For large tables, consider partitioning by date. Always use parameterized queries to prevent SQL injection. ## Redis Caching Patterns Use Redis for session storage, rate limiting, and cache-aside patterns. Set TTLs on cached data to prevent stale reads. Consider Redis Cluster for high availability. Monitor memory usage—Redis holds everything in RAM. ## HubSpot CRM Integration HubSpot offers a REST API and webhooks for real-time sync. Authentication uses private apps (access token) or OAuth for public apps. The CRM API covers contacts, companies, deals, and tickets. Use the Search API for complex queries. Webhook subscriptions require a valid endpoint that responds to verification challenges. ## Xero Accounting Integration Xero uses OAuth 2.0. The API base is https://api.xero.com/api.xro/2.0/. Endpoints include Invoices, Contacts, Payments, and BankTransactions. Connections are tenant-specific—multi-tenant apps must handle organization switching. Rate limits: 60 calls per minute per organization. ## PostgreSQL Best Practices Use connection pooling (PgBouncer) for web applications. Index foreign keys and frequently queried columns. Avoid N+1 queries—use JOINs or batch loading. For large tables, consider partitioning by date. Always use parameterized queries to prevent SQL injection. ## Redis Caching Patterns Use Redis for session storage, rate limiting, and cache-aside patterns. Set TTLs on cached data to prevent stale reads. Consider Redis Cluster for high availability. Monitor memory usage—Redis holds everything in RAM. ## HubSpot CRM Integration HubSpot offers a REST API and webhooks for real-time sync. Authentication uses private apps (access token) or OAuth for public apps. The CRM API covers contacts, companies, deals, and tickets. Use the Search API for complex queries. Webhook subscriptions require a valid endpoint that responds to verification challenges. ## Xero Accounting Integration Xero uses OAuth 2.0. The API base is https://api.xero.com/api.xro/2.0/. Endpoints include Invoices, Contacts, Payments, and BankTransactions. Connections are tenant-specific—multi-tenant apps must handle organization switching. Rate limits: 60 calls per minute per organization. ## PostgreSQL Best Practices Use connection pooling (PgBouncer) for web applications. Index foreign keys and frequently queried columns. Avoid N+1 queries—use JOINs or batch loading. For large tables, consider partitioning by date. Always use parameterized queries to prevent SQL injection. ## Redis Caching Patterns Use Redis for session storage, rate limiting, and cache-aside patterns. Set TTLs on cached data to prevent stale reads. Consider Redis Cluster for high availability. Monitor memory usage—Redis holds everything in RAM. ## HubSpot CRM Integration HubSpot offers a REST API and webhooks for real-time sync. Authentication uses private apps (access token) or OAuth for public apps. The CRM API covers contacts, companies, deals, and tickets. Use the Search API for complex queries. Webhook subscriptions require a valid endpoint that responds to verification challenges. ## Xero Accounting Integration Xero uses OAuth 2.0. The API base is https://api.xero.com/api.xro/2.0/. Endpoints include Invoices, Contacts, Payments, and BankTransactions. Connections are tenant-specific—multi-tenant apps must handle organization switching. Rate limits: 60 calls per minute per organization. ## PostgreSQL Best Practices Use connection pooling (PgBouncer) for web applications. Index foreign keys and frequently queried columns. Avoid N+1 queries—use JOINs or batch loading. For large tables, consider partitioning by date. Always use parameterized queries to prevent SQL injection. ## Redis Caching Patterns Use Redis for session storage, rate limiting, and cache-aside patterns. Set TTLs on cached data to prevent stale reads. Consider Redis Cluster for high availability. Monitor memory usage—Redis holds everything in RAM. ## HubSpot CRM Integration HubSpot offers a REST API and webhooks for real-time sync. Authentication uses private apps (access token) or OAuth for public apps. The CRM API covers contacts, companies, deals, and tickets. Use the Search API for complex queries. Webhook subscriptions require a valid endpoint that responds to verification challenges. ## Xero Accounting Integration Xero uses OAuth 2.0. The API base is https://api.xero.com/api.xro/2.0/. Endpoints include Invoices, Contacts, Payments, and BankTransactions. Connections are tenant-specific—multi-tenant apps must handle organization switching. Rate limits: 60 calls per minute per organization. ## PostgreSQL Best Practices Use connection pooling (PgBouncer) for web applications. Index foreign keys and frequently queried columns. Avoid N+1 queries—use JOINs or batch loading. For large tables, consider partitioning by date. Always use parameterized queries to prevent SQL injection. ## Redis Caching Patterns Use Redis for session storage, rate limiting, and cache-aside patterns. Set TTLs on cached data to prevent stale reads. Consider Redis Cluster for high availability. Monitor memory usage—Redis holds everything in RAM. ## HubSpot CRM Integration HubSpot offers a REST API and webhooks for real-time sync. Authentication uses private apps (access token) or OAuth for public apps. The CRM API covers contacts, companies, deals, and tickets. Use the Search API for complex queries. Webhook subscriptions require a valid endpoint that responds to verification challenges. ## Xero Accounting Integration Xero uses OAuth 2.0. The API base is https://api.xero.com/api.xro/2.0/. Endpoints include Invoices, Contacts, Payments, and BankTransactions. Connections are tenant-specific—multi-tenant apps must handle organization switching. Rate limits: 60 calls per minute per organization. ## PostgreSQL Best Practices Use connection pooling (PgBouncer) for web applications. Index foreign keys and frequently queried columns. Avoid N+1 queries—use JOINs or batch loading. For large tables, consider partitioning by date. Always use parameterized queries to prevent SQL injection. ## Redis Caching Patterns Use Redis for session storage, rate limiting, and cache-aside patterns. Set TTLs on cached data to prevent stale reads. Consider Redis Cluster for high availability. Monitor memory usage—Redis holds everything in RAM. ## HubSpot CRM Integration HubSpot offers a REST API and webhooks for real-time sync. Authentication uses private apps (access token) or OAuth for public apps. The CRM API covers contacts, companies, deals, and tickets. Use the Search API for complex queries. Webhook subscriptions require a valid endpoint that responds to verification challenges. ## Xero Accounting Integration Xero uses OAuth 2.0. The API base is https://api.xero.com/api.xro/2.0/. Endpoints include Invoices, Contacts, Payments, and BankTransactions. Connections are tenant-specific—multi-tenant apps must handle organization switching. Rate limits: 60 calls per minute per organization. ## PostgreSQL Best Practices Use connection pooling (PgBouncer) for web applications. Index foreign keys and frequently queried columns. Avoid N+1 queries—use JOINs or batch loading. For large tables, consider partitioning by date. Always use parameterized queries to prevent SQL injection. ## Redis Caching Patterns Use Redis for session storage, rate limiting, and cache-aside patterns. Set TTLs on cached data to prevent stale reads. Consider Redis Cluster for high availability. Monitor memory usage—Redis holds everything in RAM. ## HubSpot CRM Integration HubSpot offers a REST API and webhooks for real-time sync. Authentication uses private apps (access token) or OAuth for public apps. The CRM API covers contacts, companies, deals, and tickets. Use the Search API for complex queries. Webhook subscriptions require a valid endpoint that responds to verification challenges. ## Xero Accounting Integration Xero uses OAuth 2.0. The API base is https://api.xero.com/api.xro/2.0/. Endpoints include Invoices, Contacts, Payments, and BankTransactions. Connections are tenant-specific—multi-tenant apps must handle organization switching. Rate limits: 60 calls per minute per organization. ## PostgreSQL Best Practices Use connection pooling (PgBouncer) for web applications. Index foreign keys and frequently queried columns. Avoid N+1 queries—use JOINs or batch loading. For large tables, consider partitioning by date. Always use parameterized queries to prevent SQL injection. ## Redis Caching Patterns Use Redis for session storage, rate limiting, and cache-aside patterns. Set TTLs on cached data to prevent stale reads. Consider Redis Cluster for high availability. Monitor memory usage—Redis holds everything in RAM. ## HubSpot CRM Integration HubSpot offers a REST API and webhooks for real-time sync. Authentication uses private apps (access token) or OAuth for public apps. The CRM API covers contacts, companies, deals, and tickets. Use the Search API for complex queries. Webhook subscriptions require a valid endpoint that responds to verification challenges. ## Xero Accounting Integration Xero uses OAuth 2.0. The API base is https://api.xero.com/api.xro/2.0/. Endpoints include Invoices, Contacts, Payments, and BankTransactions. Connections are tenant-specific—multi-tenant apps must handle organization switching. Rate limits: 60 calls per minute per organization. ## PostgreSQL Best Practices Use connection pooling (PgBouncer) for web applications. Index foreign keys and frequently queried columns. Avoid N+1 queries—use JOINs or batch loading. For large tables, consider partitioning by date. Always use parameterized queries to prevent SQL injection. ## Redis Caching Patterns Use Redis for session storage, rate limiting, and cache-aside patterns. Set TTLs on cached data to prevent stale reads. Consider Redis Cluster for high availability. Monitor memory usage—Redis holds everything in RAM. ## HubSpot CRM Integration HubSpot offers a REST API and webhooks for real-time sync. Authentication uses private apps (access token) or OAuth for public apps. The CRM API covers contacts, companies, deals, and tickets. Use the Search API for complex queries. Webhook subscriptions require a valid endpoint that responds to verification challenges. ## Xero Accounting Integration Xero uses OAuth 2.0. The API base is https://api.xero.com/api.xro/2.0/. Endpoints include Invoices, Contacts, Payments, and BankTransactions. Connections are tenant-specific—multi-tenant apps must handle organization switching. Rate limits: 60 calls per minute per organization. ## PostgreSQL Best Practices Use connection pooling (PgBouncer) for web applications. Index foreign keys and frequently queried columns. Avoid N+1 queries—use JOINs or batch loading. For large tables, consider partitioning by date. Always use parameterized queries to prevent SQL injection. ## Redis Caching Patterns Use Redis for session storage, rate limiting, and cache-aside patterns. Set TTLs on cached data to prevent stale reads. Consider Redis Cluster for high availability. Monitor memory usage—Redis holds everything in RAM. ## HubSpot CRM Integration HubSpot offers a REST API and webhooks for real-time sync. Authentication uses private apps (access token) or OAuth for public apps. The CRM API covers contacts, companies, deals, and tickets. Use the Search API for complex queries. Webhook subscriptions require a valid endpoint that responds to verification challenges. ## Xero Accounting Integration Xero uses OAuth 2.0. The API base is https://api.xero.com/api.xro/2.0/. Endpoints include Invoices, Contacts, Payments, and BankTransactions. Connections are tenant-specific—multi-tenant apps must handle organization switching. Rate limits: 60 calls per minute per organization. ## PostgreSQL Best Practices Use connection pooling (PgBouncer) for web applications. Index foreign keys and frequently queried columns. Avoid N+1 queries—use JOINs or batch loading. For large tables, consider partitioning by date. Always use parameterized queries to prevent SQL injection. ## Redis Caching Patterns Use Redis for session storage, rate limiting, and cache-aside patterns. Set TTLs on cached data to prevent stale reads. Consider Redis Cluster for high availability. Monitor memory usage—Redis holds everything in RAM. ## HubSpot CRM Integration HubSpot offers a REST API and webhooks for real-time sync. Authentication uses private apps (access token) or OAuth for public apps. The CRM API covers contacts, companies, deals, and tickets. Use the Search API for complex queries. Webhook subscriptions require a valid endpoint that responds to verification challenges. ## Xero Accounting Integration Xero uses OAuth 2.0. The API base is https://api.xero.com/api.xro/2.0/. Endpoints include Invoices, Contacts, Payments, and BankTransactions. Connections are tenant-specific—multi-tenant apps must handle organization switching. Rate limits: 60 calls per minute per organization. ## PostgreSQL Best Practices Use connection pooling (PgBouncer) for web applications. Index foreign keys and frequently queried columns. Avoid N+1 queries—use JOINs or batch loading. For large tables, consider partitioning by date. Always use parameterized queries to prevent SQL injection. ## Redis Caching Patterns Use Redis for session storage, rate limiting, and cache-aside patterns. Set TTLs on cached data to prevent stale reads. Consider Redis Cluster for high availability. Monitor memory usage—Redis holds everything in RAM. ## HubSpot CRM Integration HubSpot offers a REST API and webhooks for real-time sync. Authentication uses private apps (access token) or OAuth for public apps. The CRM API covers contacts, companies, deals, and tickets. Use the Search API for complex queries. Webhook subscriptions require a valid endpoint that responds to verification challenges. ## Xero Accounting Integration Xero uses OAuth 2.0. The API base is https://api.xero.com/api.xro/2.0/. Endpoints include Invoices, Contacts, Payments, and BankTransactions. Connections are tenant-specific—multi-tenant apps must handle organization switching. Rate limits: 60 calls per minute per organization. ## PostgreSQL Best Practices Use connection pooling (PgBouncer) for web applications. Index foreign keys and frequently queried columns. Avoid N+1 queries—use JOINs or batch loading. For large tables, consider partitioning by date. Always use parameterized queries to prevent SQL injection. ## Redis Caching Patterns Use Redis for session storage, rate limiting, and cache-aside patterns. Set TTLs on cached data to prevent stale reads. Consider Redis Cluster for high availability. Monitor memory usage—Redis holds everything in RAM. ## HubSpot CRM Integration HubSpot offers a REST API and webhooks for real-time sync. Authentication uses private apps (access token) or OAuth for public apps. The CRM API covers contacts, companies, deals, and tickets. Use the Search API for complex queries. Webhook subscriptions require a valid endpoint that responds to verification challenges. ## Xero Accounting Integration Xero uses OAuth 2.0. The API base is https://api.xero.com/api.xro/2.0/. Endpoints include Invoices, Contacts, Payments, and BankTransactions. Connections are tenant-specific—multi-tenant apps must handle organization switching. Rate limits: 60 calls per minute per organization. ## PostgreSQL Best Practices Use connection pooling (PgBouncer) for web applications. Index foreign keys and frequently queried columns. Avoid N+1 queries—use JOINs or batch loading. For large tables, consider partitioning by date. Always use parameterized queries to prevent SQL injection. ## Redis Caching Patterns Use Redis for session storage, rate limiting, and cache-aside patterns. Set TTLs on cached data to prevent stale reads. Consider Redis Cluster for high availability. Monitor memory usage—Redis holds everything in RAM. ## HubSpot CRM Integration HubSpot offers a REST API and webhooks for real-time sync. Authentication uses private apps (access token) or OAuth for public apps. The CRM API covers contacts, companies, deals, and tickets. Use the Search API for complex queries. Webhook subscriptions require a valid endpoint that responds to verification challenges. ## Xero Accounting Integration Xero uses OAuth 2.0. The API base is https://api.xero.com/api.xro/2.0/. Endpoints include Invoices, Contacts, Payments, and BankTransactions. Connections are tenant-specific—multi-tenant apps must handle organization switching. Rate limits: 60 calls per minute per organization. ## PostgreSQL Best Practices Use connection pooling (PgBouncer) for web applications. Index foreign keys and frequently queried columns. Avoid N+1 queries—use JOINs or batch loading. For large tables, consider partitioning by date. Always use parameterized queries to prevent SQL injection. ## Redis Caching Patterns Use Redis for session storage, rate limiting, and cache-aside patterns. Set TTLs on cached data to prevent stale reads. Consider Redis Cluster for high availability. Monitor memory usage—Redis holds everything in RAM. ## HubSpot CRM Integration HubSpot offers a REST API and webhooks for real-time sync. Authentication uses private apps (access token) or OAuth for public apps. The CRM API covers contacts, companies, deals, and tickets. Use the Search API for complex queries. Webhook subscriptions require a valid endpoint that responds to verification challenges. ## Xero Accounting Integration Xero uses OAuth 2.0. The API base is https://api.xero.com/api.xro/2.0/. Endpoints include Invoices, Contacts, Payments, and BankTransactions. Connections are tenant-specific—multi-tenant apps must handle organization switching. Rate limits: 60 calls per minute per organization. ## PostgreSQL Best Practices Use connection pooling (PgBouncer) for web applications. Index foreign keys and frequently queried columns. Avoid N+1 queries—use JOINs or batch loading. For large tables, consider partitioning by date. Always use parameterized queries to prevent SQL injection. ## Redis Caching Patterns Use Redis for session storage, rate limiting, and cache-aside patterns. Set TTLs on cached data to prevent stale reads. Consider Redis Cluster for high availability. Monitor memory usage—Redis holds everything in RAM. ## HubSpot CRM Integration HubSpot offers a REST API and webhooks for real-time sync. Authentication uses private apps (access token) or OAuth for public apps. The CRM API covers contacts, companies, deals, and tickets. Use the Search API for complex queries. Webhook subscriptions require a valid endpoint that responds to verification challenges. ## Xero Accounting Integration Xero uses OAuth 2.0. The API base is https://api.xero.com/api.xro/2.0/. Endpoints include Invoices, Contacts, Payments, and BankTransactions. Connections are tenant-specific—multi-tenant apps must handle organization switching. Rate limits: 60 calls per minute per organization. ## PostgreSQL Best Practices Use connection pooling (PgBouncer) for web applications. Index foreign keys and frequently queried columns. Avoid N+1 queries—use JOINs or batch loading. For large tables, consider partitioning by date. Always use parameterized queries to prevent SQL injection. ## Redis Caching Patterns Use Redis for session storage, rate limiting, and cache-aside patterns. Set TTLs on cached data to prevent stale reads. Consider Redis Cluster for high availability. Monitor memory usage—Redis holds everything in RAM. ## HubSpot CRM Integration HubSpot offers a REST API and webhooks for real-time sync. Authentication uses private apps (access token) or OAuth for public apps. The CRM API covers contacts, companies, deals, and tickets. Use the Search API for complex queries. Webhook subscriptions require a valid endpoint that responds to verification challenges. ## Xero Accounting Integration Xero uses OAuth 2.0. The API base is https://api.xero.com/api.xro/2.0/. Endpoints include Invoices, Contacts, Payments, and BankTransactions. Connections are tenant-specific—multi-tenant apps must handle organization switching. Rate limits: 60 calls per minute per organization. ## PostgreSQL Best Practices Use connection pooling (PgBouncer) for web applications. Index foreign keys and frequently queried columns. Avoid N+1 queries—use JOINs or batch loading. For large tables, consider partitioning by date. Always use parameterized queries to prevent SQL injection. ## Redis Caching Patterns Use Redis for session storage, rate limiting, and cache-aside patterns. Set TTLs on cached data to prevent stale reads. Consider Redis Cluster for high availability. Monitor memory usage—Redis holds everything in RAM. ## HubSpot CRM Integration HubSpot offers a REST API and webhooks for real-time sync. Authentication uses private apps (access token) or OAuth for public apps. The CRM API covers contacts, companies, deals, and tickets. Use the Search API for complex queries. Webhook subscriptions require a valid endpoint that responds to verification challenges. ## Xero Accounting Integration Xero uses OAuth 2.0. The API base is https://api.xero.com/api.xro/2.0/. Endpoints include Invoices, Contacts, Payments, and BankTransactions. Connections are tenant-specific—multi-tenant apps must handle organization switching. Rate limits: 60 calls per minute per organization. ## PostgreSQL Best Practices Use connection pooling (PgBouncer) for web applications. Index foreign keys and frequently queried columns. Avoid N+1 queries—use JOINs or batch loading. For large tables, consider partitioning by date. Always use parameterized queries to prevent SQL injection. ## Redis Caching Patterns Use Redis for session storage, rate limiting, and cache-aside patterns. Set TTLs on cached data to prevent stale reads. Consider Redis Cluster for high availability. Monitor memory usage—Redis holds everything in RAM. ## HubSpot CRM Integration HubSpot offers a REST API and webhooks for real-time sync. Authentication uses private apps (access token) or OAuth for public apps. The CRM API covers contacts, companies, deals, and tickets. Use the Search API for complex queries. Webhook subscriptions require a valid endpoint that responds to verification challenges. ## Xero Accounting Integration Xero uses OAuth 2.0. The API base is https://api.xero.com/api.xro/2.0/. Endpoints include Invoices, Contacts, Payments, and BankTransactions. Connections are tenant-specific—multi-tenant apps must handle organization switching. Rate limits: 60 calls per minute per organization. ## PostgreSQL Best Practices Use connection pooling (PgBouncer) for web applications. Index foreign keys and frequently queried columns. Avoid N+1 queries—use JOINs or batch loading. For large tables, consider partitioning by date. Always use parameterized queries to prevent SQL injection. ## Redis Caching Patterns Use Redis for session storage, rate limiting, and cache-aside patterns. Set TTLs on cached data to prevent stale reads. Consider Redis Cluster for high availability. Monitor memory usage—Redis holds everything in RAM. ## HubSpot CRM Integration HubSpot offers a REST API and webhooks for real-time sync. Authentication uses private apps (access token) or OAuth for public apps. The CRM API covers contacts, companies, deals, and tickets. Use the Search API for complex queries. Webhook subscriptions require a valid endpoint that responds to verification challenges. ## Xero Accounting Integration Xero uses OAuth 2.0. The API base is https://api.xero.com/api.xro/2.0/. Endpoints include Invoices, Contacts, Payments, and BankTransactions. Connections are tenant-specific—multi-tenant apps must handle organization switching. Rate limits: 60 calls per minute per organization. ## PostgreSQL Best Practices Use connection pooling (PgBouncer) for web applications. Index foreign keys and frequently queried columns. Avoid N+1 queries—use JOINs or batch loading. For large tables, consider partitioning by date. Always use parameterized queries to prevent SQL injection. ## Redis Caching Patterns Use Redis for session storage, rate limiting, and cache-aside patterns. Set TTLs on cached data to prevent stale reads. Consider Redis Cluster for high availability. Monitor memory usage—Redis holds everything in RAM. ## HubSpot CRM Integration HubSpot offers a REST API and webhooks for real-time sync. Authentication uses private apps (access token) or OAuth for public apps. The CRM API covers contacts, companies, deals, and tickets. Use the Search API for complex queries. Webhook subscriptions require a valid endpoint that responds to verification challenges. ## Xero Accounting Integration Xero uses OAuth 2.0. The API base is https://api.xero.com/api.xro/2.0/. Endpoints include Invoices, Contacts, Payments, and BankTransactions. Connections are tenant-specific—multi-tenant apps must handle organization switching. Rate limits: 60 calls per minute per organization. ## PostgreSQL Best Practices Use connection pooling (PgBouncer) for web applications. Index foreign keys and frequently queried columns. Avoid N+1 queries—use JOINs or batch loading. For large tables, consider partitioning by date. Always use parameterized queries to prevent SQL injection. ## Redis Caching Patterns Use Redis for session storage, rate limiting, and cache-aside patterns. Set TTLs on cached data to prevent stale reads. Consider Redis Cluster for high availability. Monitor memory usage—Redis holds everything in RAM. ## HubSpot CRM Integration HubSpot offers a REST API and webhooks for real-time sync. Authentication uses private apps (access token) or OAuth for public apps. The CRM API covers contacts, companies, deals, and tickets. Use the Search API for complex queries. Webhook subscriptions require a valid endpoint that responds to verification challenges. ## Xero Accounting Integration Xero uses OAuth 2.0. The API base is https://api.xero.com/api.xro/2.0/. Endpoints include Invoices, Contacts, Payments, and BankTransactions. Connections are tenant-specific—multi-tenant apps must handle organization switching. Rate limits: 60 calls per minute per organization. ## PostgreSQL Best Practices Use connection pooling (PgBouncer) for web applications. Index foreign keys and frequently queried columns. Avoid N+1 queries—use JOINs or batch loading. For large tables, consider partitioning by date. Always use parameterized queries to prevent SQL injection. ## Redis Caching Patterns Use Redis for session storage, rate limiting, and cache-aside patterns. Set TTLs on cached data to prevent stale reads. Consider Redis Cluster for high availability. Monitor memory usage—Redis holds everything in RAM. ## HubSpot CRM Integration HubSpot offers a REST API and webhooks for real-time sync. Authentication uses private apps (access token) or OAuth for public apps. The CRM API covers contacts, companies, deals, and tickets. Use the Search API for complex queries. Webhook subscriptions require a valid endpoint that responds to verification challenges. ## Xero Accounting Integration Xero uses OAuth 2.0. The API base is https://api.xero.com/api.xro/2.0/. Endpoints include Invoices, Contacts, Payments, and BankTransactions. Connections are tenant-specific—multi-tenant apps must handle organization switching. Rate limits: 60 calls per minute per organization. ## PostgreSQL Best Practices Use connection pooling (PgBouncer) for web applications. Index foreign keys and frequently queried columns. Avoid N+1 queries—use JOINs or batch loading. For large tables, consider partitioning by date. Always use parameterized queries to prevent SQL injection. ## Redis Caching Patterns Use Redis for session storage, rate limiting, and cache-aside patterns. Set TTLs on cached data to prevent stale reads. Consider Redis Cluster for high availability. Monitor memory usage—Redis holds everything in RAM. ## HubSpot CRM Integration HubSpot offers a REST API and webhooks for real-time sync. Authentication uses private apps (access token) or OAuth for public apps. The CRM API covers contacts, companies, deals, and tickets. Use the Search API for complex queries. Webhook subscriptions require a valid endpoint that responds to verification challenges. ## Xero Accounting Integration Xero uses OAuth 2.0. The API base is https://api.xero.com/api.xro/2.0/. Endpoints include Invoices, Contacts, Payments, and BankTransactions. Connections are tenant-specific—multi-tenant apps must handle organization switching. Rate limits: 60 calls per minute per organization. ## PostgreSQL Best Practices Use connection pooling (PgBouncer) for web applications. Index foreign keys and frequently queried columns. Avoid N+1 queries—use JOINs or batch loading. For large tables, consider partitioning by date. Always use parameterized queries to prevent SQL injection. ## Redis Caching Patterns Use Redis for session storage, rate limiting, and cache-aside patterns. Set TTLs on cached data to prevent stale reads. Consider Redis Cluster for high availability. Monitor memory usage—Redis holds everything in RAM. ## HubSpot CRM Integration HubSpot offers a REST API and webhooks for real-time sync. Authentication uses private apps (access token) or OAuth for public apps. The CRM API covers contacts, companies, deals, and tickets. Use the Search API for complex queries. Webhook subscriptions require a valid endpoint that responds to verification challenges. ## Xero Accounting Integration Xero uses OAuth 2.0. The API base is https://api.xero.com/api.xro/2.0/. Endpoints include Invoices, Contacts, Payments, and BankTransactions. Connections are tenant-specific—multi-tenant apps must handle organization switching. Rate limits: 60 calls per minute per organization. ## PostgreSQL Best Practices Use connection pooling (PgBouncer) for web applications. Index foreign keys and frequently queried columns. Avoid N+1 queries—use JOINs or batch loading. For large tables, consider partitioning by date. Always use parameterized queries to prevent SQL injection. ## Redis Caching Patterns Use Redis for session storage, rate limiting, and cache-aside patterns. Set TTLs on cached data to prevent stale reads. Consider Redis Cluster for high availability. Monitor memory usage—Redis holds everything in RAM. ## HubSpot CRM Integration HubSpot offers a REST API and webhooks for real-time sync. Authentication uses private apps (access token) or OAuth for public apps. The CRM API covers contacts, companies, deals, and tickets. Use the Search API for complex queries. Webhook subscriptions require a valid endpoint that responds to verification challenges. ## Xero Accounting Integration Xero uses OAuth 2.0. The API base is https://api.xero.com/api.xro/2.0/. Endpoints include Invoices, Contacts, Payments, and BankTransactions. Connections are tenant-specific—multi-tenant apps must handle organization switching. Rate limits: 60 calls per minute per organization. ## PostgreSQL Best Practices Use connection pooling (PgBouncer) for web applications. Index foreign keys and frequently queried columns. Avoid N+1 queries—use JOINs or batch loading. For large tables, consider partitioning by date. Always use parameterized queries to prevent SQL injection. ## Redis Caching Patterns Use Redis for session storage, rate limiting, and cache-aside patterns. Set TTLs on cached data to prevent stale reads. Consider Redis Cluster for high availability. Monitor memory usage—Redis holds everything in RAM. ## HubSpot CRM Integration HubSpot offers a REST API and webhooks for real-time sync. Authentication uses private apps (access token) or OAuth for public apps. The CRM API covers contacts, companies, deals, and tickets. Use the Search API for complex queries. Webhook subscriptions require a valid endpoint that responds to verification challenges. ## Xero Accounting Integration Xero uses OAuth 2.0. The API base is https://api.xero.com/api.xro/2.0/. Endpoints include Invoices, Contacts, Payments, and BankTransactions. Connections are tenant-specific—multi-tenant apps must handle organization switching. Rate limits: 60 calls per minute per organization. ## PostgreSQL Best Practices Use connection pooling (PgBouncer) for web applications. Index foreign keys and frequently queried columns. Avoid N+1 queries—use JOINs or batch loading. For large tables, consider partitioning by date. Always use parameterized queries to prevent SQL injection. ## Redis Caching Patterns Use Redis for session storage, rate limiting, and cache-aside patterns. Set TTLs on cached data to prevent stale reads. Consider Redis Cluster for high availability. Monitor memory usage—Redis holds everything in RAM. ## HubSpot CRM Integration HubSpot offers a REST API and webhooks for real-time sync. Authentication uses private apps (access token) or OAuth for public apps. The CRM API covers contacts, companies, deals, and tickets. Use the Search API for complex queries. Webhook subscriptions require a valid endpoint that responds to verification challenges. ## Xero Accounting Integration Xero uses OAuth 2.0. The API base is https://api.xero.com/api.xro/2.0/. Endpoints include Invoices, Contacts, Payments, and BankTransactions. Connections are tenant-specific—multi-tenant apps must handle organization switching. Rate limits: 60 calls per minute per organization. ## PostgreSQL Best Practices Use connection pooling (PgBouncer) for web applications. Index foreign keys and frequently queried columns. Avoid N+1 queries—use JOINs or batch loading. For large tables, consider partitioning by date. Always use parameterized queries to prevent SQL injection. ## Redis Caching Patterns Use Redis for session storage, rate limiting, and cache-aside patterns. Set TTLs on cached data to prevent stale reads. Consider Redis Cluster for high availability. Monitor memory usage—Redis holds everything in RAM. ## HubSpot CRM Integration HubSpot offers a REST API and webhooks for real-time sync. Authentication uses private apps (access token) or OAuth for public apps. The CRM API covers contacts, companies, deals, and tickets. Use the Search API for complex queries. Webhook subscriptions require a valid endpoint that responds to verification challenges. ## Xero Accounting Integration Xero uses OAuth 2.0. The API base is https://api.xero.com/api.xro/2.0/. Endpoints include Invoices, Contacts, Payments, and BankTransactions. Connections are tenant-specific—multi-tenant apps must handle organization switching. Rate limits: 60 calls per minute per organization. ## PostgreSQL Best Practices Use connection pooling (PgBouncer) for web applications. Index foreign keys and frequently queried columns. Avoid N+1 queries—use JOINs or batch loading. For large tables, consider partitioning by date. Always use parameterized queries to prevent SQL injection. ## Redis Caching Patterns Use Redis for session storage, rate limiting, and cache-aside patterns. Set TTLs on cached data to prevent stale reads. Consider Redis Cluster for high availability. Monitor memory usage—Redis holds everything in RAM. ## HubSpot CRM Integration HubSpot offers a REST API and webhooks for real-time sync. Authentication uses private apps (access token) or OAuth for public apps. The CRM API covers contacts, companies, deals, and tickets. Use the Search API for complex queries. Webhook subscriptions require a valid endpoint that responds to verification challenges. ## Xero Accounting Integration Xero uses OAuth 2.0. The API base is https://api.xero.com/api.xro/2.0/. Endpoints include Invoices, Contacts, Payments, and BankTransactions. Connections are tenant-specific—multi-tenant apps must handle organization switching. Rate limits: 60 calls per minute per organization. ## PostgreSQL Best Practices Use connection pooling (PgBouncer) for web applications. Index foreign keys and frequently queried columns. Avoid N+1 queries—use JOINs or batch loading. For large tables, consider partitioning by date. Always use parameterized queries to prevent SQL injection. ## Redis Caching Patterns Use Redis for session storage, rate limiting, and cache-aside patterns. Set TTLs on cached data to prevent stale reads. Consider Redis Cluster for high availability. Monitor memory usage—Redis holds everything in RAM. ## HubSpot CRM Integration HubSpot offers a REST API and webhooks for real-time sync. Authentication uses private apps (access token) or OAuth for public apps. The CRM API covers contacts, companies, deals, and tickets. Use the Search API for complex queries. Webhook subscriptions require a valid endpoint that responds to verification challenges. ## Xero Accounting Integration Xero uses OAuth 2.0. The API base is https://api.xero.com/api.xro/2.0/. Endpoints include Invoices, Contacts, Payments, and BankTransactions. Connections are tenant-specific—multi-tenant apps must handle organization switching. Rate limits: 60 calls per minute per organization. ## PostgreSQL Best Practices Use connection pooling (PgBouncer) for web applications. Index foreign keys and frequently queried columns. Avoid N+1 queries—use JOINs or batch loading. For large tables, consider partitioning by date. Always use parameterized queries to prevent SQL injection. ## Redis Caching Patterns Use Redis for session storage, rate limiting, and cache-aside patterns. Set TTLs on cached data to prevent stale reads. Consider Redis Cluster for high availability. Monitor memory usage—Redis holds everything in RAM. ## HubSpot CRM Integration HubSpot offers a REST API and webhooks for real-time sync. Authentication uses private apps (access token) or OAuth for public apps. The CRM API covers contacts, companies, deals, and tickets. Use the Search API for complex queries. Webhook subscriptions require a valid endpoint that responds to verification challenges. ## Xero Accounting Integration Xero uses OAuth 2.0. The API base is https://api.xero.com/api.xro/2.0/. Endpoints include Invoices, Contacts, Payments, and BankTransactions. Connections are tenant-specific—multi-tenant apps must handle organization switching. Rate limits: 60 calls per minute per organization. ## PostgreSQL Best Practices Use connection pooling (PgBouncer) for web applications. Index foreign keys and frequently queried columns. Avoid N+1 queries—use JOINs or batch loading. For large tables, consider partitioning by date. Always use parameterized queries to prevent SQL injection. ## Redis Caching Patterns Use Redis for session storage, rate limiting, and cache-aside patterns. Set TTLs on cached data to prevent stale reads. Consider Redis Cluster for high availability. Monitor memory usage—Redis holds everything in RAM. ## HubSpot CRM Integration HubSpot offers a REST API and webhooks for real-time sync. Authentication uses private apps (access token) or OAuth for public apps. The CRM API covers contacts, companies, deals, and tickets. Use the Search API for complex queries. Webhook subscriptions require a valid endpoint that responds to verification challenges. ## Xero Accounting Integration Xero uses OAuth 2.0. The API base is https://api.xero.com/api.xro/2.0/. Endpoints include Invoices, Contacts, Payments, and BankTransactions. Connections are tenant-specific—multi-tenant apps must handle organization switching. Rate limits: 60 calls per minute per organization. ## PostgreSQL Best Practices Use connection pooling (PgBouncer) for web applications. Index foreign keys and frequently queried columns. Avoid N+1 queries—use JOINs or batch loading. For large tables, consider partitioning by date. Always use parameterized queries to prevent SQL injection. ## Redis Caching Patterns Use Redis for session storage, rate limiting, and cache-aside patterns. Set TTLs on cached data to prevent stale reads. Consider Redis Cluster for high availability. Monitor memory usage—Redis holds everything in RAM. ## HubSpot CRM Integration HubSpot offers a REST API and webhooks for real-time sync. Authentication uses private apps (access token) or OAuth for public apps. The CRM API covers contacts, companies, deals, and tickets. Use the Search API for complex queries. Webhook subscriptions require a valid endpoint that responds to verification challenges. ## Xero Accounting Integration Xero uses OAuth 2.0. The API base is https://api.xero.com/api.xro/2.0/. Endpoints include Invoices, Contacts, Payments, and BankTransactions. Connections are tenant-specific—multi-tenant apps must handle organization switching. Rate limits: 60 calls per minute per organization. ## PostgreSQL Best Practices Use connection pooling (PgBouncer) for web applications. Index foreign keys and frequently queried columns. Avoid N+1 queries—use JOINs or batch loading. For large tables, consider partitioning by date. Always use parameterized queries to prevent SQL injection. ## Redis Caching Patterns Use Redis for session storage, rate limiting, and cache-aside patterns. Set TTLs on cached data to prevent stale reads. Consider Redis Cluster for high availability. Monitor memory usage—Redis holds everything in RAM. ## HubSpot CRM Integration HubSpot offers a REST API and webhooks for real-time sync. Authentication uses private apps (access token) or OAuth for public apps. The CRM API covers contacts, companies, deals, and tickets. Use the Search API for complex queries. Webhook subscriptions require a valid endpoint that responds to verification challenges. ## Xero Accounting Integration Xero uses OAuth 2.0. The API base is https://api.xero.com/api.xro/2.0/. Endpoints include Invoices, Contacts, Payments, and BankTransactions. Connections are tenant-specific—multi-tenant apps must handle organization switching. Rate limits: 60 calls per minute per organization. ## PostgreSQL Best Practices Use connection pooling (PgBouncer) for web applications. Index foreign keys and frequently queried columns. Avoid N+1 queries—use JOINs or batch loading. For large tables, consider partitioning by date. Always use parameterized queries to prevent SQL injection. ## Redis Caching Patterns Use Redis for session storage, rate limiting, and cache-aside patterns. Set TTLs on cached data to prevent stale reads. Consider Redis Cluster for high availability. Monitor memory usage—Redis holds everything in RAM. ## HubSpot CRM Integration HubSpot offers a REST API and webhooks for real-time sync. Authentication uses private apps (access token) or OAuth for public apps. The CRM API covers contacts, companies, deals, and tickets. Use the Search API for complex queries. Webhook subscriptions require a valid endpoint that responds to verification challenges. ## Xero Accounting Integration Xero uses OAuth 2.0. The API base is https://api.xero.com/api.xro/2.0/. Endpoints include Invoices, Contacts, Payments, and BankTransactions. Connections are tenant-specific—multi-tenant apps must handle organization switching. Rate limits: 60 calls per minute per organization. ## PostgreSQL Best Practices Use connection pooling (PgBouncer) for web applications. Index foreign keys and frequently queried columns. Avoid N+1 queries—use JOINs or batch loading. For large tables, consider partitioning by date. Always use parameterized queries to prevent SQL injection. ## Redis Caching Patterns Use Redis for session storage, rate limiting, and cache-aside patterns. Set TTLs on cached data to prevent stale reads. Consider Redis Cluster for high availability. Monitor memory usage—Redis holds everything in RAM. ## HubSpot CRM Integration HubSpot offers a REST API and webhooks for real-time sync. Authentication uses private apps (access token) or OAuth for public apps. The CRM API covers contacts, companies, deals, and tickets. Use the Search API for complex queries. Webhook subscriptions require a valid endpoint that responds to verification challenges. ## Xero Accounting Integration Xero uses OAuth 2.0. The API base is https://api.xero.com/api.xro/2.0/. Endpoints include Invoices, Contacts, Payments, and BankTransactions. Connections are tenant-specific—multi-tenant apps must handle organization switching. Rate limits: 60 calls per minute per organization. ## PostgreSQL Best Practices Use connection pooling (PgBouncer) for web applications. Index foreign keys and frequently queried columns. Avoid N+1 queries—use JOINs or batch loading. For large tables, consider partitioning by date. Always use parameterized queries to prevent SQL injection. ## Redis Caching Patterns Use Redis for session storage, rate limiting, and cache-aside patterns. Set TTLs on cached data to prevent stale reads. Consider Redis Cluster for high availability. Monitor memory usage—Redis holds everything in RAM. ## HubSpot CRM Integration HubSpot offers a REST API and webhooks for real-time sync. Authentication uses private apps (access token) or OAuth for public apps. The CRM API covers contacts, companies, deals, and tickets. Use the Search API for complex queries. Webhook subscriptions require a valid endpoint that responds to verification challenges. ## Xero Accounting Integration Xero uses OAuth 2.0. The API base is https://api.xero.com/api.xro/2.0/. Endpoints include Invoices, Contacts, Payments, and BankTransactions. Connections are tenant-specific—multi-tenant apps must handle organization switching. Rate limits: 60 calls per minute per organization. ## PostgreSQL Best Practices Use connection pooling (PgBouncer) for web applications. Index foreign keys and frequently queried columns. Avoid N+1 queries—use JOINs or batch loading. For large tables, consider partitioning by date. Always use parameterized queries to prevent SQL injection. ## Redis Caching Patterns Use Redis for session storage, rate limiting, and cache-aside patterns. Set TTLs on cached data to prevent stale reads. Consider Redis Cluster for high availability. Monitor memory usage—Redis holds everything in RAM. ## HubSpot CRM Integration HubSpot offers a REST API and webhooks for real-time sync. Authentication uses private apps (access token) or OAuth for public apps. The CRM API covers contacts, companies, deals, and tickets. Use the Search API for complex queries. Webhook subscriptions require a valid endpoint that responds to verification challenges. ## Xero Accounting Integration Xero uses OAuth 2.0. The API base is https://api.xero.com/api.xro/2.0/. Endpoints include Invoices, Contacts, Payments, and BankTransactions. Connections are tenant-specific—multi-tenant apps must handle organization switching. Rate limits: 60 calls per minute per organization. ## PostgreSQL Best Practices Use connection pooling (PgBouncer) for web applications. Index foreign keys and frequently queried columns. Avoid N+1 queries—use JOINs or batch loading. For large tables, consider partitioning by date. Always use parameterized queries to prevent SQL injection. ## Redis Caching Patterns Use Redis for session storage, rate limiting, and cache-aside patterns. Set TTLs on cached data to prevent stale reads. Consider Redis Cluster for high availability. Monitor memory usage—Redis holds everything in RAM. ## HubSpot CRM Integration HubSpot offers a REST API and webhooks for real-time sync. Authentication uses private apps (access token) or OAuth for public apps. The CRM API covers contacts, companies, deals, and tickets. Use the Search API for complex queries. Webhook subscriptions require a valid endpoint that responds to verification challenges. ## Xero Accounting Integration Xero uses OAuth 2.0. The API base is https://api.xero.com/api.xro/2.0/. Endpoints include Invoices, Contacts, Payments, and BankTransactions. Connections are tenant-specific—multi-tenant apps must handle organization switching. Rate limits: 60 calls per minute per organization. ## PostgreSQL Best Practices Use connection pooling (PgBouncer) for web applications. Index foreign keys and frequently queried columns. Avoid N+1 queries—use JOINs or batch loading. For large tables, consider partitioning by date. Always use parameterized queries to prevent SQL injection. ## Redis Caching Patterns Use Redis for session storage, rate limiting, and cache-aside patterns. Set TTLs on cached data to prevent stale reads. Consider Redis Cluster for high availability. Monitor memory usage—Redis holds everything in RAM. ## HubSpot CRM Integration HubSpot offers a REST API and webhooks for real-time sync. Authentication uses private apps (access token) or OAuth for public apps. The CRM API covers contacts, companies, deals, and tickets. Use the Search API for complex queries. Webhook subscriptions require a valid endpoint that responds to verification challenges. ## Xero Accounting Integration Xero uses OAuth 2.0. The API base is https://api.xero.com/api.xro/2.0/. Endpoints include Invoices, Contacts, Payments, and BankTransactions. Connections are tenant-specific—multi-tenant apps must handle organization switching. Rate limits: 60 calls per minute per organization. ## PostgreSQL Best Practices Use connection pooling (PgBouncer) for web applications. Index foreign keys and frequently queried columns. Avoid N+1 queries—use JOINs or batch loading. For large tables, consider partitioning by date. Always use parameterized queries to prevent SQL injection. ## Redis Caching Patterns Use Redis for session storage, rate limiting, and cache-aside patterns. Set TTLs on cached data to prevent stale reads. Consider Redis Cluster for high availability. Monitor memory usage—Redis holds everything in RAM. ## HubSpot CRM Integration HubSpot offers a REST API and webhooks for real-time sync. Authentication uses private apps (access token) or OAuth for public apps. The CRM API covers contacts, companies, deals, and tickets. Use the Search API for complex queries. Webhook subscriptions require a valid endpoint that responds to verification challenges. ## Xero Accounting Integration Xero uses OAuth 2.0. The API base is https://api.xero.com/api.xro/2.0/. Endpoints include Invoices, Contacts, Payments, and BankTransactions. Connections are tenant-specific—multi-tenant apps must handle organization switching. Rate limits: 60 calls per minute per organization. ## PostgreSQL Best Practices Use connection pooling (PgBouncer) for web applications. Index foreign keys and frequently queried columns. Avoid N+1 queries—use JOINs or batch loading. For large tables, consider partitioning by date. Always use parameterized queries to prevent SQL injection. ## Redis Caching Patterns Use Redis for session storage, rate limiting, and cache-aside patterns. Set TTLs on cached data to prevent stale reads. Consider Redis Cluster for high availability. Monitor memory usage—Redis holds everything in RAM. ## HubSpot CRM Integration HubSpot offers a REST API and webhooks for real-time sync. Authentication uses private apps (access token) or OAuth for public apps. The CRM API covers contacts, companies, deals, and tickets. Use the Search API for complex queries. Webhook subscriptions require a valid endpoint that responds to verification challenges. ## Xero Accounting Integration Xero uses OAuth 2.0. The API base is https://api.xero.com/api.xro/2.0/. Endpoints include Invoices, Contacts, Payments, and BankTransactions. Connections are tenant-specific—multi-tenant apps must handle organization switching. Rate limits: 60 calls per minute per organization. ## PostgreSQL Best Practices Use connection pooling (PgBouncer) for web applications. Index foreign keys and frequently queried columns. Avoid N+1 queries—use JOINs or batch loading. For large tables, consider partitioning by date. Always use parameterized queries to prevent SQL injection. ## Redis Caching Patterns Use Redis for session storage, rate limiting, and cache-aside patterns. Set TTLs on cached data to prevent stale reads. Consider Redis Cluster for high availability. Monitor memory usage—Redis holds everything in RAM. ## HubSpot CRM Integration HubSpot offers a REST API and webhooks for real-time sync. Authentication uses private apps (access token) or OAuth for public apps. The CRM API covers contacts, companies, deals, and tickets. Use the Search API for complex queries. Webhook subscriptions require a valid endpoint that responds to verification challenges. ## Xero Accounting Integration Xero uses OAuth 2.0. The API base is https://api.xero.com/api.xro/2.0/. Endpoints include Invoices, Contacts, Payments, and BankTransactions. Connections are tenant-specific—multi-tenant apps must handle organization switching. Rate limits: 60 calls per minute per organization. ## PostgreSQL Best Practices Use connection pooling (PgBouncer) for web applications. Index foreign keys and frequently queried columns. Avoid N+1 queries—use JOINs or batch loading. For large tables, consider partitioning by date. Always use parameterized queries to prevent SQL injection. ## Redis Caching Patterns Use Redis for session storage, rate limiting, and cache-aside patterns. Set TTLs on cached data to prevent stale reads. Consider Redis Cluster for high availability. Monitor memory usage—Redis holds everything in RAM. ## HubSpot CRM Integration HubSpot offers a REST API and webhooks for real-time sync. Authentication uses private apps (access token) or OAuth for public apps. The CRM API covers contacts, companies, deals, and tickets. Use the Search API for complex queries. Webhook subscriptions require a valid endpoint that responds to verification challenges. ## Xero Accounting Integration Xero uses OAuth 2.0. The API base is https://api.xero.com/api.xro/2.0/. Endpoints include Invoices, Contacts, Payments, and BankTransactions. Connections are tenant-specific—multi-tenant apps must handle organization switching. Rate limits: 60 calls per minute per organization. ## PostgreSQL Best Practices Use connection pooling (PgBouncer) for web applications. Index foreign keys and frequently queried columns. Avoid N+1 queries—use JOINs or batch loading. For large tables, consider partitioning by date. Always use parameterized queries to prevent SQL injection. ## Redis Caching Patterns Use Redis for session storage, rate limiting, and cache-aside patterns. Set TTLs on cached data to prevent stale reads. Consider Redis Cluster for high availability. Monitor memory usage—Redis holds everything in RAM. ## HubSpot CRM Integration HubSpot offers a REST API and webhooks for real-time sync. Authentication uses private apps (access token) or OAuth for public apps. The CRM API covers contacts, companies, deals, and tickets. Use the Search API for complex queries. Webhook subscriptions require a valid endpoint that responds to verification challenges. ## Xero Accounting Integration Xero uses OAuth 2.0. The API base is https://api.xero.com/api.xro/2.0/. Endpoints include Invoices, Contacts, Payments, and BankTransactions. Connections are tenant-specific—multi-tenant apps must handle organization switching. Rate limits: 60 calls per minute per organization. ## PostgreSQL Best Practices Use connection pooling (PgBouncer) for web applications. Index foreign keys and frequently queried columns. Avoid N+1 queries—use JOINs or batch loading. For large tables, consider partitioning by date. Always use parameterized queries to prevent SQL injection. ## Redis Caching Patterns Use Redis for session storage, rate limiting, and cache-aside patterns. Set TTLs on cached data to prevent stale reads. Consider Redis Cluster for high availability. Monitor memory usage—Redis holds everything in RAM. ## HubSpot CRM Integration HubSpot offers a REST API and webhooks for real-time sync. Authentication uses private apps (access token) or OAuth for public apps. The CRM API covers contacts, companies, deals, and tickets. Use the Search API for complex queries. Webhook subscriptions require a valid endpoint that responds to verification challenges. ## Xero Accounting Integration Xero uses OAuth 2.0. The API base is https://api.xero.com/api.xro/2.0/. Endpoints include Invoices, Contacts, Payments, and BankTransactions. Connections are tenant-specific—multi-tenant apps must handle organization switching. Rate limits: 60 calls per minute per organization. ## PostgreSQL Best Practices Use connection pooling (PgBouncer) for web applications. Index foreign keys and frequently queried columns. Avoid N+1 queries—use JOINs or batch loading. For large tables, consider partitioning by date. Always use parameterized queries to prevent SQL injection. ## Redis Caching Patterns Use Redis for session storage, rate limiting, and cache-aside patterns. Set TTLs on cached data to prevent stale reads. Consider Redis Cluster for high availability. Monitor memory usage—Redis holds everything in RAM. ## HubSpot CRM Integration HubSpot offers a REST API and webhooks for real-time sync. Authentication uses private apps (access token) or OAuth for public apps. The CRM API covers contacts, companies, deals, and tickets. Use the Search API for complex queries. Webhook subscriptions require a valid endpoint that responds to verification challenges. ## Xero Accounting Integration Xero uses OAuth 2.0. The API base is https://api.xero.com/api.xro/2.0/. Endpoints include Invoices, Contacts, Payments, and BankTransactions. Connections are tenant-specific—multi-tenant apps must handle organization switching. Rate limits: 60 calls per minute per organization. ## PostgreSQL Best Practices Use connection pooling (PgBouncer) for web applications. Index foreign keys and frequently queried columns. Avoid N+1 queries—use JOINs or batch loading. For large tables, consider partitioning by date. Always use parameterized queries to prevent SQL injection. ## Redis Caching Patterns Use Redis for session storage, rate limiting, and cache-aside patterns. Set TTLs on cached data to prevent stale reads. Consider Redis Cluster for high availability. Monitor memory usage—Redis holds everything in RAM. ## HubSpot CRM Integration HubSpot offers a REST API and webhooks for real-time sync. Authentication uses private apps (access token) or OAuth for public apps. The CRM API covers contacts, companies, deals, and tickets. Use the Search API for complex queries. Webhook subscriptions require a valid endpoint that responds to verification challenges. ## Xero Accounting Integration Xero uses OAuth 2.0. The API base is https://api.xero.com/api.xro/2.0/. Endpoints include Invoices, Contacts, Payments, and BankTransactions. Connections are tenant-specific—multi-tenant apps must handle organization switching. Rate limits: 60 calls per minute per organization. ## PostgreSQL Best Practices Use connection pooling (PgBouncer) for web applications. Index foreign keys and frequently queried columns. Avoid N+1 queries—use JOINs or batch loading. For large tables, consider partitioning by date. Always use parameterized queries to prevent SQL injection. ## Redis Caching Patterns Use Redis for session storage, rate limiting, and cache-aside patterns. Set TTLs on cached data to prevent stale reads. Consider Redis Cluster for high availability. Monitor memory usage—Redis holds everything in RAM. ## HubSpot CRM Integration HubSpot offers a REST API and webhooks for real-time sync. Authentication uses private apps (access token) or OAuth for public apps. The CRM API covers contacts, companies, deals, and tickets. Use the Search API for complex queries. Webhook subscriptions require a valid endpoint that responds to verification challenges. ## Xero Accounting Integration Xero uses OAuth 2.0. The API base is https://api.xero.com/api.xro/2.0/. Endpoints include Invoices, Contacts, Payments, and BankTransactions. Connections are tenant-specific—multi-tenant apps must handle organization switching. Rate limits: 60 calls per minute per organization. ## PostgreSQL Best Practices Use connection pooling (PgBouncer) for web applications. Index foreign keys and frequently queried columns. Avoid N+1 queries—use JOINs or batch loading. For large tables, consider partitioning by date. Always use parameterized queries to prevent SQL injection. ## Redis Caching Patterns Use Redis for session storage, rate limiting, and cache-aside patterns. Set TTLs on cached data to prevent stale reads. Consider Redis Cluster for high availability. Monitor memory usage—Redis holds everything in RAM. ## HubSpot CRM Integration HubSpot offers a REST API and webhooks for real-time sync. Authentication uses private apps (access token) or OAuth for public apps. The CRM API covers contacts, companies, deals, and tickets. Use the Search API for complex queries. Webhook subscriptions require a valid endpoint that responds to verification challenges. ## Xero Accounting Integration Xero uses OAuth 2.0. The API base is https://api.xero.com/api.xro/2.0/. Endpoints include Invoices, Contacts, Payments, and BankTransactions. Connections are tenant-specific—multi-tenant apps must handle organization switching. Rate limits: 60 calls per minute per organization. ## PostgreSQL Best Practices Use connection pooling (PgBouncer) for web applications. Index foreign keys and frequently queried columns. Avoid N+1 queries—use JOINs or batch loading. For large tables, consider partitioning by date. Always use parameterized queries to prevent SQL injection. ## Redis Caching Patterns Use Redis for session storage, rate limiting, and cache-aside patterns. Set TTLs on cached data to prevent stale reads. Consider Redis Cluster for high availability. Monitor memory usage—Redis holds everything in RAM. ## HubSpot CRM Integration HubSpot offers a REST API and webhooks for real-time sync. Authentication uses private apps (access token) or OAuth for public apps. The CRM API covers contacts, companies, deals, and tickets. Use the Search API for complex queries. Webhook subscriptions require a valid endpoint that responds to verification challenges. ## Xero Accounting Integration Xero uses OAuth 2.0. The API base is https://api.xero.com/api.xro/2.0/. Endpoints include Invoices, Contacts, Payments, and BankTransactions. Connections are tenant-specific—multi-tenant apps must handle organization switching. Rate limits: 60 calls per minute per organization. ## PostgreSQL Best Practices Use connection pooling (PgBouncer) for web applications. Index foreign keys and frequently queried columns. Avoid N+1 queries—use JOINs or batch loading. For large tables, consider partitioning by date. Always use parameterized queries to prevent SQL injection. ## Redis Caching Patterns Use Redis for session storage, rate limiting, and cache-aside patterns. Set TTLs on cached data to prevent stale reads. Consider Redis Cluster for high availability. Monitor memory usage—Redis holds everything in RAM. ## HubSpot CRM Integration HubSpot offers a REST API and webhooks for real-time sync. Authentication uses private apps (access token) or OAuth for public apps. The CRM API covers contacts, companies, deals, and tickets. Use the Search API for complex queries. Webhook subscriptions require a valid endpoint that responds to verification challenges. ## Xero Accounting Integration Xero uses OAuth 2.0. The API base is https://api.xero.com/api.xro/2.0/. Endpoints include Invoices, Contacts, Payments, and BankTransactions. Connections are tenant-specific—multi-tenant apps must handle organization switching. Rate limits: 60 calls per minute per organization. ## PostgreSQL Best Practices Use connection pooling (PgBouncer) for web applications. Index foreign keys and frequently queried columns. Avoid N+1 queries—use JOINs or batch loading. For large tables, consider partitioning by date. Always use parameterized queries to prevent SQL injection. ## Redis Caching Patterns Use Redis for session storage, rate limiting, and cache-aside patterns. Set TTLs on cached data to prevent stale reads. Consider Redis Cluster for high availability. Monitor memory usage—Redis holds everything in RAM. ## HubSpot CRM Integration HubSpot offers a REST API and webhooks for real-time sync. Authentication uses private apps (access token) or OAuth for public apps. The CRM API covers contacts, companies, deals, and tickets. Use the Search API for complex queries. Webhook subscriptions require a valid endpoint that responds to verification challenges. ## Xero Accounting Integration Xero uses OAuth 2.0. The API base is https://api.xero.com/api.xro/2.0/. Endpoints include Invoices, Contacts, Payments, and BankTransactions. Connections are tenant-specific—multi-tenant apps must handle organization switching. Rate limits: 60 calls per minute per organization. ## PostgreSQL Best Practices Use connection pooling (PgBouncer) for web applications. Index foreign keys and frequently queried columns. Avoid N+1 queries—use JOINs or batch loading. For large tables, consider partitioning by date. Always use parameterized queries to prevent SQL injection. ## Redis Caching Patterns Use Redis for session storage, rate limiting, and cache-aside patterns. Set TTLs on cached data to prevent stale reads. Consider Redis Cluster for high availability. Monitor memory usage—Redis holds everything in RAM. ## HubSpot CRM Integration HubSpot offers a REST API and webhooks for real-time sync. Authentication uses private apps (access token) or OAuth for public apps. The CRM API covers contacts, companies, deals, and tickets. Use the Search API for complex queries. Webhook subscriptions require a valid endpoint that responds to verification challenges. ## Xero Accounting Integration Xero uses OAuth 2.0. The API base is https://api.xero.com/api.xro/2.0/. Endpoints include Invoices, Contacts, Payments, and BankTransactions. Connections are tenant-specific—multi-tenant apps must handle organization switching. Rate limits: 60 calls per minute per organization. ## PostgreSQL Best Practices Use connection pooling (PgBouncer) for web applications. Index foreign keys and frequently queried columns. Avoid N+1 queries—use JOINs or batch loading. For large tables, consider partitioning by date. Always use parameterized queries to prevent SQL injection. ## Redis Caching Patterns Use Redis for session storage, rate limiting, and cache-aside patterns. Set TTLs on cached data to prevent stale reads. Consider Redis Cluster for high availability. Monitor memory usage—Redis holds everything in RAM. ## HubSpot CRM Integration HubSpot offers a REST API and webhooks for real-time sync. Authentication uses private apps (access token) or OAuth for public apps. The CRM API covers contacts, companies, deals, and tickets. Use the Search API for complex queries. Webhook subscriptions require a valid endpoint that responds to verification challenges. ## Xero Accounting Integration Xero uses OAuth 2.0. The API base is https://api.xero.com/api.xro/2.0/. Endpoints include Invoices, Contacts, Payments, and BankTransactions. Connections are tenant-specific—multi-tenant apps must handle organization switching. Rate limits: 60 calls per minute per organization. ## PostgreSQL Best Practices Use connection pooling (PgBouncer) for web applications. Index foreign keys and frequently queried columns. Avoid N+1 queries—use JOINs or batch loading. For large tables, consider partitioning by date. Always use parameterized queries to prevent SQL injection. ## Redis Caching Patterns Use Redis for session storage, rate limiting, and cache-aside patterns. Set TTLs on cached data to prevent stale reads. Consider Redis Cluster for high availability. Monitor memory usage—Redis holds everything in RAM. ## HubSpot CRM Integration HubSpot offers a REST API and webhooks for real-time sync. Authentication uses private apps (access token) or OAuth for public apps. The CRM API covers contacts, companies, deals, and tickets. Use the Search API for complex queries. Webhook subscriptions require a valid endpoint that responds to verification challenges. ## Xero Accounting Integration Xero uses OAuth 2.0. The API base is https://api.xero.com/api.xro/2.0/. Endpoints include Invoices, Contacts, Payments, and BankTransactions. Connections are tenant-specific—multi-tenant apps must handle organization switching. Rate limits: 60 calls per minute per organization. ## PostgreSQL Best Practices Use connection pooling (PgBouncer) for web applications. Index foreign keys and frequently queried columns. Avoid N+1 queries—use JOINs or batch loading. For large tables, consider partitioning by date. Always use parameterized queries to prevent SQL injection. ## Redis Caching Patterns Use Redis for session storage, rate limiting, and cache-aside patterns. Set TTLs on cached data to prevent stale reads. Consider Redis Cluster for high availability. Monitor memory usage—Redis holds everything in RAM. ## HubSpot CRM Integration HubSpot offers a REST API and webhooks for real-time sync. Authentication uses private apps (access token) or OAuth for public apps. The CRM API covers contacts, companies, deals, and tickets. Use the Search API for complex queries. Webhook subscriptions require a valid endpoint that responds to verification challenges. ## Xero Accounting Integration Xero uses OAuth 2.0. The API base is https://api.xero.com/api.xro/2.0/. Endpoints include Invoices, Contacts, Payments, and BankTransactions. Connections are tenant-specific—multi-tenant apps must handle organization switching. Rate limits: 60 calls per minute per organization. ## PostgreSQL Best Practices Use connection pooling (PgBouncer) for web applications. Index foreign keys and frequently queried columns. Avoid N+1 queries—use JOINs or batch loading. For large tables, consider partitioning by date. Always use parameterized queries to prevent SQL injection. ## Redis Caching Patterns Use Redis for session storage, rate limiting, and cache-aside patterns. Set TTLs on cached data to prevent stale reads. Consider Redis Cluster for high availability. Monitor memory usage—Redis holds everything in RAM. ## HubSpot CRM Integration HubSpot offers a REST API and webhooks for real-time sync. Authentication uses private apps (access token) or OAuth for public apps. The CRM API covers contacts, companies, deals, and tickets. Use the Search API for complex queries. Webhook subscriptions require a valid endpoint that responds to verification challenges. ## Xero Accounting Integration Xero uses OAuth 2.0. The API base is https://api.xero.com/api.xro/2.0/. Endpoints include Invoices, Contacts, Payments, and BankTransactions. Connections are tenant-specific—multi-tenant apps must handle organization switching. Rate limits: 60 calls per minute per organization. ## PostgreSQL Best Practices Use connection pooling (PgBouncer) for web applications. Index foreign keys and frequently queried columns. Avoid N+1 queries—use JOINs or batch loading. For large tables, consider partitioning by date. Always use parameterized queries to prevent SQL injection. ## Redis Caching Patterns Use Redis for session storage, rate limiting, and cache-aside patterns. Set TTLs on cached data to prevent stale reads. Consider Redis Cluster for high availability. Monitor memory usage—Redis holds everything in RAM. ## HubSpot CRM Integration HubSpot offers a REST API and webhooks for real-time sync. Authentication uses private apps (access token) or OAuth for public apps. The CRM API covers contacts, companies, deals, and tickets. Use the Search API for complex queries. Webhook subscriptions require a valid endpoint that responds to verification challenges. ## Xero Accounting Integration Xero uses OAuth 2.0. The API base is https://api.xero.com/api.xro/2.0/. Endpoints include Invoices, Contacts, Payments, and BankTransactions. Connections are tenant-specific—multi-tenant apps must handle organization switching. Rate limits: 60 calls per minute per organization. ## PostgreSQL Best Practices Use connection pooling (PgBouncer) for web applications. Index foreign keys and frequently queried columns. Avoid N+1 queries—use JOINs or batch loading. For large tables, consider partitioning by date. Always use parameterized queries to prevent SQL injection. ## Redis Caching Patterns Use Redis for session storage, rate limiting, and cache-aside patterns. Set TTLs on cached data to prevent stale reads. Consider Redis Cluster for high availability. Monitor memory usage—Redis holds everything in RAM. ## HubSpot CRM Integration HubSpot offers a REST API and webhooks for real-time sync. Authentication uses private apps (access token) or OAuth for public apps. The CRM API covers contacts, companies, deals, and tickets. Use the Search API for complex queries. Webhook subscriptions require a valid endpoint that responds to verification challenges. ## Xero Accounting Integration Xero uses OAuth 2.0. The API base is https://api.xero.com/api.xro/2.0/. Endpoints include Invoices, Contacts, Payments, and BankTransactions. Connections are tenant-specific—multi-tenant apps must handle organization switching. Rate limits: 60 calls per minute per organization. ## PostgreSQL Best Practices Use connection pooling (PgBouncer) for web applications. Index foreign keys and frequently queried columns. Avoid N+1 queries—use JOINs or batch loading. For large tables, consider partitioning by date. Always use parameterized queries to prevent SQL injection. ## Redis Caching Patterns Use Redis for session storage, rate limiting, and cache-aside patterns. Set TTLs on cached data to prevent stale reads. Consider Redis Cluster for high availability. Monitor memory usage—Redis holds everything in RAM. ## HubSpot CRM Integration HubSpot offers a REST API and webhooks for real-time sync. Authentication uses private apps (access token) or OAuth for public apps. The CRM API covers contacts, companies, deals, and tickets. Use the Search API for complex queries. Webhook subscriptions require a valid endpoint that responds to verification challenges. ## Xero Accounting Integration Xero uses OAuth 2.0. The API base is https://api.xero.com/api.xro/2.0/. Endpoints include Invoices, Contacts, Payments, and BankTransactions. Connections are tenant-specific—multi-tenant apps must handle organization switching. Rate limits: 60 calls per minute per organization. ## PostgreSQL Best Practices Use connection pooling (PgBouncer) for web applications. Index foreign keys and frequently queried columns. Avoid N+1 queries—use JOINs or batch loading. For large tables, consider partitioning by date. Always use parameterized queries to prevent SQL injection. ## Redis Caching Patterns Use Redis for session storage, rate limiting, and cache-aside patterns. Set TTLs on cached data to prevent stale reads. Consider Redis Cluster for high availability. Monitor memory usage—Redis holds everything in RAM. ## HubSpot CRM Integration HubSpot offers a REST API and webhooks for real-time sync. Authentication uses private apps (access token) or OAuth for public apps. The CRM API covers contacts, companies, deals, and tickets. Use the Search API for complex queries. Webhook subscriptions require a valid endpoint that responds to verification challenges. ## Xero Accounting Integration Xero uses OAuth 2.0. The API base is https://api.xero.com/api.xro/2.0/. Endpoints include Invoices, Contacts, Payments, and BankTransactions. Connections are tenant-specific—multi-tenant apps must handle organization switching. Rate limits: 60 calls per minute per organization. ## PostgreSQL Best Practices Use connection pooling (PgBouncer) for web applications. Index foreign keys and frequently queried columns. Avoid N+1 queries—use JOINs or batch loading. For large tables, consider partitioning by date. Always use parameterized queries to prevent SQL injection. ## Redis Caching Patterns Use Redis for session storage, rate limiting, and cache-aside patterns. Set TTLs on cached data to prevent stale reads. Consider Redis Cluster for high availability. Monitor memory usage—Redis holds everything in RAM. ## HubSpot CRM Integration HubSpot offers a REST API and webhooks for real-time sync. Authentication uses private apps (access token) or OAuth for public apps. The CRM API covers contacts, companies, deals, and tickets. Use the Search API for complex queries. Webhook subscriptions require a valid endpoint that responds to verification challenges. ## Xero Accounting Integration Xero uses OAuth 2.0. The API base is https://api.xero.com/api.xro/2.0/. Endpoints include Invoices, Contacts, Payments, and BankTransactions. Connections are tenant-specific—multi-tenant apps must handle organization switching. Rate limits: 60 calls per minute per organization. ## PostgreSQL Best Practices Use connection pooling (PgBouncer) for web applications. Index foreign keys and frequently queried columns. Avoid N+1 queries—use JOINs or batch loading. For large tables, consider partitioning by date. Always use parameterized queries to prevent SQL injection. ## Redis Caching Patterns Use Redis for session storage, rate limiting, and cache-aside patterns. Set TTLs on cached data to prevent stale reads. Consider Redis Cluster for high availability. Monitor memory usage—Redis holds everything in RAM. ## HubSpot CRM Integration HubSpot offers a REST API and webhooks for real-time sync. Authentication uses private apps (access token) or OAuth for public apps. The CRM API covers contacts, companies, deals, and tickets. Use the Search API for complex queries. Webhook subscriptions require a valid endpoint that responds to verification challenges. ## Xero Accounting Integration Xero uses OAuth 2.0. The API base is https://api.xero.com/api.xro/2.0/. Endpoints include Invoices, Contacts, Payments, and BankTransactions. Connections are tenant-specific—multi-tenant apps must handle organization switching. Rate limits: 60 calls per minute per organization. ## PostgreSQL Best Practices Use connection pooling (PgBouncer) for web applications. Index foreign keys and frequently queried columns. Avoid N+1 queries—use JOINs or batch loading. For large tables, consider partitioning by date. Always use parameterized queries to prevent SQL injection. ## Redis Caching Patterns Use Redis for session storage, rate limiting, and cache-aside patterns. Set TTLs on cached data to prevent stale reads. Consider Redis Cluster for high availability. Monitor memory usage—Redis holds everything in RAM. ## HubSpot CRM Integration HubSpot offers a REST API and webhooks for real-time sync. Authentication uses private apps (access token) or OAuth for public apps. The CRM API covers contacts, companies, deals, and tickets. Use the Search API for complex queries. Webhook subscriptions require a valid endpoint that responds to verification challenges. ## Xero Accounting Integration Xero uses OAuth 2.0. The API base is https://api.xero.com/api.xro/2.0/. Endpoints include Invoices, Contacts, Payments, and BankTransactions. Connections are tenant-specific—multi-tenant apps must handle organization switching. Rate limits: 60 calls per minute per organization. ## PostgreSQL Best Practices Use connection pooling (PgBouncer) for web applications. Index foreign keys and frequently queried columns. Avoid N+1 queries—use JOINs or batch loading. For large tables, consider partitioning by date. Always use parameterized queries to prevent SQL injection. ## Redis Caching Patterns Use Redis for session storage, rate limiting, and cache-aside patterns. Set TTLs on cached data to prevent stale reads. Consider Redis Cluster for high availability. Monitor memory usage—Redis holds everything in RAM. ## HubSpot CRM Integration HubSpot offers a REST API and webhooks for real-time sync. Authentication uses private apps (access token) or OAuth for public apps. The CRM API covers contacts, companies, deals, and tickets. Use the Search API for complex queries. Webhook subscriptions require a valid endpoint that responds to verification challenges. ## Xero Accounting Integration Xero uses OAuth 2.0. The API base is https://api.xero.com/api.xro/2.0/. Endpoints include Invoices, Contacts, Payments, and BankTransactions. Connections are tenant-specific—multi-tenant apps must handle organization switching. Rate limits: 60 calls per minute per organization. ## PostgreSQL Best Practices Use connection pooling (PgBouncer) for web applications. Index foreign keys and frequently queried columns. Avoid N+1 queries—use JOINs or batch loading. For large tables, consider partitioning by date. Always use parameterized queries to prevent SQL injection. ## Redis Caching Patterns Use Redis for session storage, rate limiting, and cache-aside patterns. Set TTLs on cached data to prevent stale reads. Consider Redis Cluster for high availability. Monitor memory usage—Redis holds everything in RAM. ## HubSpot CRM Integration HubSpot offers a REST API and webhooks for real-time sync. Authentication uses private apps (access token) or OAuth for public apps. The CRM API covers contacts, companies, deals, and tickets. Use the Search API for complex queries. Webhook subscriptions require a valid endpoint that responds to verification challenges. ## Xero Accounting Integration Xero uses OAuth 2.0. The API base is https://api.xero.com/api.xro/2.0/. Endpoints include Invoices, Contacts, Payments, and BankTransactions. Connections are tenant-specific—multi-tenant apps must handle organization switching. Rate limits: 60 calls per minute per organization. ## PostgreSQL Best Practices Use connection pooling (PgBouncer) for web applications. Index foreign keys and frequently queried columns. Avoid N+1 queries—use JOINs or batch loading. For large tables, consider partitioning by date. Always use parameterized queries to prevent SQL injection. ## Redis Caching Patterns Use Redis for session storage, rate limiting, and cache-aside patterns. Set TTLs on cached data to prevent stale reads. Consider Redis Cluster for high availability. Monitor memory usage—Redis holds everything in RAM. ## HubSpot CRM Integration HubSpot offers a REST API and webhooks for real-time sync. Authentication uses private apps (access token) or OAuth for public apps. The CRM API covers contacts, companies, deals, and tickets. Use the Search API for complex queries. Webhook subscriptions require a valid endpoint that responds to verification challenges. ## Xero Accounting Integration Xero uses OAuth 2.0. The API base is https://api.xero.com/api.xro/2.0/. Endpoints include Invoices, Contacts, Payments, and BankTransactions. Connections are tenant-specific—multi-tenant apps must handle organization switching. Rate limits: 60 calls per minute per organization. ## PostgreSQL Best Practices Use connection pooling (PgBouncer) for web applications. Index foreign keys and frequently queried columns. Avoid N+1 queries—use JOINs or batch loading. For large tables, consider partitioning by date. Always use parameterized queries to prevent SQL injection. ## Redis Caching Patterns Use Redis for session storage, rate limiting, and cache-aside patterns. Set TTLs on cached data to prevent stale reads. Consider Redis Cluster for high availability. Monitor memory usage—Redis holds everything in RAM. ## HubSpot CRM Integration HubSpot offers a REST API and webhooks for real-time sync. Authentication uses private apps (access token) or OAuth for public apps. The CRM API covers contacts, companies, deals, and tickets. Use the Search API for complex queries. Webhook subscriptions require a valid endpoint that responds to verification challenges. ## Xero Accounting Integration Xero uses OAuth 2.0. The API base is https://api.xero.com/api.xro/2.0/. Endpoints include Invoices, Contacts, Payments, and BankTransactions. Connections are tenant-specific—multi-tenant apps must handle organization switching. Rate limits: 60 calls per minute per organization. ## PostgreSQL Best Practices Use connection pooling (PgBouncer) for web applications. Index foreign keys and frequently queried columns. Avoid N+1 queries—use JOINs or batch loading. For large tables, consider partitioning by date. Always use parameterized queries to prevent SQL injection. ## Redis Caching Patterns Use Redis for session storage, rate limiting, and cache-aside patterns. Set TTLs on cached data to prevent stale reads. Consider Redis Cluster for high availability. Monitor memory usage—Redis holds everything in RAM. ## HubSpot CRM Integration HubSpot offers a REST API and webhooks for real-time sync. Authentication uses private apps (access token) or OAuth for public apps. The CRM API covers contacts, companies, deals, and tickets. Use the Search API for complex queries. Webhook subscriptions require a valid endpoint that responds to verification challenges. ## Xero Accounting Integration Xero uses OAuth 2.0. The API base is https://api.xero.com/api.xro/2.0/. Endpoints include Invoices, Contacts, Payments, and BankTransactions. Connections are tenant-specific—multi-tenant apps must handle organization switching. Rate limits: 60 calls per minute per organization. ## PostgreSQL Best Practices Use connection pooling (PgBouncer) for web applications. Index foreign keys and frequently queried columns. Avoid N+1 queries—use JOINs or batch loading. For large tables, consider partitioning by date. Always use parameterized queries to prevent SQL injection. ## Redis Caching Patterns Use Redis for session storage, rate limiting, and cache-aside patterns. Set TTLs on cached data to prevent stale reads. Consider Redis Cluster for high availability. Monitor memory usage—Redis holds everything in RAM. ## HubSpot CRM Integration HubSpot offers a REST API and webhooks for real-time sync. Authentication uses private apps (access token) or OAuth for public apps. The CRM API covers contacts, companies, deals, and tickets. Use the Search API for complex queries. Webhook subscriptions require a valid endpoint that responds to verification challenges. ## Xero Accounting Integration Xero uses OAuth 2.0. The API base is https://api.xero.com/api.xro/2.0/. Endpoints include Invoices, Contacts, Payments, and BankTransactions. Connections are tenant-specific—multi-tenant apps must handle organization switching. Rate limits: 60 calls per minute per organization. ## PostgreSQL Best Practices Use connection pooling (PgBouncer) for web applications. Index foreign keys and frequently queried columns. Avoid N+1 queries—use JOINs or batch loading. For large tables, consider partitioning by date. Always use parameterized queries to prevent SQL injection. ## Redis Caching Patterns Use Redis for session storage, rate limiting, and cache-aside patterns. Set TTLs on cached data to prevent stale reads. Consider Redis Cluster for high availability. Monitor memory usage—Redis holds everything in RAM. ## HubSpot CRM Integration HubSpot offers a REST API and webhooks for real-time sync. Authentication uses private apps (access token) or OAuth for public apps. The CRM API covers contacts, companies, deals, and tickets. Use the Search API for complex queries. Webhook subscriptions require a valid endpoint that responds to verification challenges. ## Xero Accounting Integration Xero uses OAuth 2.0. The API base is https://api.xero.com/api.xro/2.0/. Endpoints include Invoices, Contacts, Payments, and BankTransactions. Connections are tenant-specific—multi-tenant apps must handle organization switching. Rate limits: 60 calls per minute per organization. ## PostgreSQL Best Practices Use connection pooling (PgBouncer) for web applications. Index foreign keys and frequently queried columns. Avoid N+1 queries—use JOINs or batch loading. For large tables, consider partitioning by date. Always use parameterized queries to prevent SQL injection. ## Redis Caching Patterns Use Redis for session storage, rate limiting, and cache-aside patterns. Set TTLs on cached data to prevent stale reads. Consider Redis Cluster for high availability. Monitor memory usage—Redis holds everything in RAM. ## HubSpot CRM Integration HubSpot offers a REST API and webhooks for real-time sync. Authentication uses private apps (access token) or OAuth for public apps. The CRM API covers contacts, companies, deals, and tickets. Use the Search API for complex queries. Webhook subscriptions require a valid endpoint that responds to verification challenges. ## Xero Accounting Integration Xero uses OAuth 2.0. The API base is https://api.xero.com/api.xro/2.0/. Endpoints include Invoices, Contacts, Payments, and BankTransactions. Connections are tenant-specific—multi-tenant apps must handle organization switching. Rate limits: 60 calls per minute per organization. ## PostgreSQL Best Practices Use connection pooling (PgBouncer) for web applications. Index foreign keys and frequently queried columns. Avoid N+1 queries—use JOINs or batch loading. For large tables, consider partitioning by date. Always use parameterized queries to prevent SQL injection. ## Redis Caching Patterns Use Redis for session storage, rate limiting, and cache-aside patterns. Set TTLs on cached data to prevent stale reads. Consider Redis Cluster for high availability. Monitor memory usage—Redis holds everything in RAM. ## HubSpot CRM Integration HubSpot offers a REST API and webhooks for real-time sync. Authentication uses private apps (access token) or OAuth for public apps. The CRM API covers contacts, companies, deals, and tickets. Use the Search API for complex queries. Webhook subscriptions require a valid endpoint that responds to verification challenges. ## Xero Accounting Integration Xero uses OAuth 2.0. The API base is https://api.xero.com/api.xro/2.0/. Endpoints include Invoices, Contacts, Payments, and BankTransactions. Connections are tenant-specific—multi-tenant apps must handle organization switching. Rate limits: 60 calls per minute per organization. ## PostgreSQL Best Practices Use connection pooling (PgBouncer) for web applications. Index foreign keys and frequently queried columns. Avoid N+1 queries—use JOINs or batch loading. For large tables, consider partitioning by date. Always use parameterized queries to prevent SQL injection. ## Redis Caching Patterns Use Redis for session storage, rate limiting, and cache-aside patterns. Set TTLs on cached data to prevent stale reads. Consider Redis Cluster for high availability. Monitor memory usage—Redis holds everything in RAM. ## HubSpot CRM Integration HubSpot offers a REST API and webhooks for real-time sync. Authentication uses private apps (access token) or OAuth for public apps. The CRM API covers contacts, companies, deals, and tickets. Use the Search API for complex queries. Webhook subscriptions require a valid endpoint that responds to verification challenges. ## Xero Accounting Integration Xero uses OAuth 2.0. The API base is https://api.xero.com/api.xro/2.0/. Endpoints include Invoices, Contacts, Payments, and BankTransactions. Connections are tenant-specific—multi-tenant apps must handle organization switching. Rate limits: 60 calls per minute per organization. ## PostgreSQL Best Practices Use connection pooling (PgBouncer) for web applications. Index foreign keys and frequently queried columns. Avoid N+1 queries—use JOINs or batch loading. For large tables, consider partitioning by date. Always use parameterized queries to prevent SQL injection. ## Redis Caching Patterns Use Redis for session storage, rate limiting, and cache-aside patterns. Set TTLs on cached data to prevent stale reads. Consider Redis Cluster for high availability. Monitor memory usage—Redis holds everything in RAM. ## HubSpot CRM Integration HubSpot offers a REST API and webhooks for real-time sync. Authentication uses private apps (access token) or OAuth for public apps. The CRM API covers contacts, companies, deals, and tickets. Use the Search API for complex queries. Webhook subscriptions require a valid endpoint that responds to verification challenges. ## Xero Accounting Integration Xero uses OAuth 2.0. The API base is https://api.xero.com/api.xro/2.0/. Endpoints include Invoices, Contacts, Payments, and BankTransactions. Connections are tenant-specific—multi-tenant apps must handle organization switching. Rate limits: 60 calls per minute per organization. ## PostgreSQL Best Practices Use connection pooling (PgBouncer) for web applications. Index foreign keys and frequently queried columns. Avoid N+1 queries—use JOINs or batch loading. For large tables, consider partitioning by date. Always use parameterized queries to prevent SQL injection. ## Redis Caching Patterns Use Redis for session storage, rate limiting, and cache-aside patterns. Set TTLs on cached data to prevent stale reads. Consider Redis Cluster for high availability. Monitor memory usage—Redis holds everything in RAM. ## HubSpot CRM Integration HubSpot offers a REST API and webhooks for real-time sync. Authentication uses private apps (access token) or OAuth for public apps. The CRM API covers contacts, companies, deals, and tickets. Use the Search API for complex queries. Webhook subscriptions require a valid endpoint that responds to verification challenges. ## Xero Accounting Integration Xero uses OAuth 2.0. The API base is https://api.xero.com/api.xro/2.0/. Endpoints include Invoices, Contacts, Payments, and BankTransactions. Connections are tenant-specific—multi-tenant apps must handle organization switching. Rate limits: 60 calls per minute per organization. ## PostgreSQL Best Practices Use connection pooling (PgBouncer) for web applications. Index foreign keys and frequently queried columns. Avoid N+1 queries—use JOINs or batch loading. For large tables, consider partitioning by date. Always use parameterized queries to prevent SQL injection. ## Redis Caching Patterns Use Redis for session storage, rate limiting, and cache-aside patterns. Set TTLs on cached data to prevent stale reads. Consider Redis Cluster for high availability. Monitor memory usage—Redis holds everything in RAM. ## HubSpot CRM Integration HubSpot offers a REST API and webhooks for real-time sync. Authentication uses private apps (access token) or OAuth for public apps. The CRM API covers contacts, companies, deals, and tickets. Use the Search API for complex queries. Webhook subscriptions require a valid endpoint that responds to verification challenges. ## Xero Accounting Integration Xero uses OAuth 2.0. The API base is https://api.xero.com/api.xro/2.0/. Endpoints include Invoices, Contacts, Payments, and BankTransactions. Connections are tenant-specific—multi-tenant apps must handle organization switching. Rate limits: 60 calls per minute per organization. ## PostgreSQL Best Practices Use connection pooling (PgBouncer) for web applications. Index foreign keys and frequently queried columns. Avoid N+1 queries—use JOINs or batch loading. For large tables, consider partitioning by date. Always use parameterized queries to prevent SQL injection. ## Redis Caching Patterns Use Redis for session storage, rate limiting, and cache-aside patterns. Set TTLs on cached data to prevent stale reads. Consider Redis Cluster for high availability. Monitor memory usage—Redis holds everything in RAM. ## HubSpot CRM Integration HubSpot offers a REST API and webhooks for real-time sync. Authentication uses private apps (access token) or OAuth for public apps. The CRM API covers contacts, companies, deals, and tickets. Use the Search API for complex queries. Webhook subscriptions require a valid endpoint that responds to verification challenges. ## Xero Accounting Integration Xero uses OAuth 2.0. The API base is https://api.xero.com/api.xro/2.0/. Endpoints include Invoices, Contacts, Payments, and BankTransactions. Connections are tenant-specific—multi-tenant apps must handle organization switching. Rate limits: 60 calls per minute per organization. ## PostgreSQL Best Practices Use connection pooling (PgBouncer) for web applications. Index foreign keys and frequently queried columns. Avoid N+1 queries—use JOINs or batch loading. For large tables, consider partitioning by date. Always use parameterized queries to prevent SQL injection. ## Redis Caching Patterns Use Redis for session storage, rate limiting, and cache-aside patterns. Set TTLs on cached data to prevent stale reads. Consider Redis Cluster for high availability. Monitor memory usage—Redis holds everything in RAM. ## HubSpot CRM Integration HubSpot offers a REST API and webhooks for real-time sync. Authentication uses private apps (access token) or OAuth for public apps. The CRM API covers contacts, companies, deals, and tickets. Use the Search API for complex queries. Webhook subscriptions require a valid endpoint that responds to verification challenges. ## Xero Accounting Integration Xero uses OAuth 2.0. The API base is https://api.xero.com/api.xro/2.0/. Endpoints include Invoices, Contacts, Payments, and BankTransactions. Connections are tenant-specific—multi-tenant apps must handle organization switching. Rate limits: 60 calls per minute per organization. ## PostgreSQL Best Practices Use connection pooling (PgBouncer) for web applications. Index foreign keys and frequently queried columns. Avoid N+1 queries—use JOINs or batch loading. For large tables, consider partitioning by date. Always use parameterized queries to prevent SQL injection. ## Redis Caching Patterns Use Redis for session storage, rate limiting, and cache-aside patterns. Set TTLs on cached data to prevent stale reads. Consider Redis Cluster for high availability. Monitor memory usage—Redis holds everything in RAM. ## HubSpot CRM Integration HubSpot offers a REST API and webhooks for real-time sync. Authentication uses private apps (access token) or OAuth for public apps. The CRM API covers contacts, companies, deals, and tickets. Use the Search API for complex queries. Webhook subscriptions require a valid endpoint that responds to verification challenges. ## Xero Accounting Integration Xero uses OAuth 2.0. The API base is https://api.xero.com/api.xro/2.0/. Endpoints include Invoices, Contacts, Payments, and BankTransactions. Connections are tenant-specific—multi-tenant apps must handle organization switching. Rate limits: 60 calls per minute per organization. ## PostgreSQL Best Practices Use connection pooling (PgBouncer) for web applications. Index foreign keys and frequently queried columns. Avoid N+1 queries—use JOINs or batch loading. For large tables, consider partitioning by date. Always use parameterized queries to prevent SQL injection. ## Redis Caching Patterns Use Redis for session storage, rate limiting, and cache-aside patterns. Set TTLs on cached data to prevent stale reads. Consider Redis Cluster for high availability. Monitor memory usage—Redis holds everything in RAM. ## HubSpot CRM Integration HubSpot offers a REST API and webhooks for real-time sync. Authentication uses private apps (access token) or OAuth for public apps. The CRM API covers contacts, companies, deals, and tickets. Use the Search API for complex queries. Webhook subscriptions require a valid endpoint that responds to verification challenges. ## Xero Accounting Integration Xero uses OAuth 2.0. The API base is https://api.xero.com/api.xro/2.0/. Endpoints include Invoices, Contacts, Payments, and BankTransactions. Connections are tenant-specific—multi-tenant apps must handle organization switching. Rate limits: 60 calls per minute per organization. ## PostgreSQL Best Practices Use connection pooling (PgBouncer) for web applications. Index foreign keys and frequently queried columns. Avoid N+1 queries—use JOINs or batch loading. For large tables, consider partitioning by date. Always use parameterized queries to prevent SQL injection. ## Redis Caching Patterns Use Redis for session storage, rate limiting, and cache-aside patterns. Set TTLs on cached data to prevent stale reads. Consider Redis Cluster for high availability. Monitor memory usage—Redis holds everything in RAM. ## HubSpot CRM Integration HubSpot offers a REST API and webhooks for real-time sync. Authentication uses private apps (access token) or OAuth for public apps. The CRM API covers contacts, companies, deals, and tickets. Use the Search API for complex queries. Webhook subscriptions require a valid endpoint that responds to verification challenges. ## Xero Accounting Integration Xero uses OAuth 2.0. The API base is https://api.xero.com/api.xro/2.0/. Endpoints include Invoices, Contacts, Payments, and BankTransactions. Connections are tenant-specific—multi-tenant apps must handle organization switching. Rate limits: 60 calls per minute per organization. ## PostgreSQL Best Practices Use connection pooling (PgBouncer) for web applications. Index foreign keys and frequently queried columns. Avoid N+1 queries—use JOINs or batch loading. For large tables, consider partitioning by date. Always use parameterized queries to prevent SQL injection. ## Redis Caching Patterns Use Redis for session storage, rate limiting, and cache-aside patterns. Set TTLs on cached data to prevent stale reads. Consider Redis Cluster for high availability. Monitor memory usage—Redis holds everything in RAM. ## HubSpot CRM Integration HubSpot offers a REST API and webhooks for real-time sync. Authentication uses private apps (access token) or OAuth for public apps. The CRM API covers contacts, companies, deals, and tickets. Use the Search API for complex queries. Webhook subscriptions require a valid endpoint that responds to verification challenges. ## Xero Accounting Integration Xero uses OAuth 2.0. The API base is https://api.xero.com/api.xro/2.0/. Endpoints include Invoices, Contacts, Payments, and BankTransactions. Connections are tenant-specific—multi-tenant apps must handle organization switching. Rate limits: 60 calls per minute per organization. ## PostgreSQL Best Practices Use connection pooling (PgBouncer) for web applications. Index foreign keys and frequently queried columns. Avoid N+1 queries—use JOINs or batch loading. For large tables, consider partitioning by date. Always use parameterized queries to prevent SQL injection. ## Redis Caching Patterns Use Redis for session storage, rate limiting, and cache-aside patterns. Set TTLs on cached data to prevent stale reads. Consider Redis Cluster for high availability. Monitor memory usage—Redis holds everything in RAM. ## HubSpot CRM Integration HubSpot offers a REST API and webhooks for real-time sync. Authentication uses private apps (access token) or OAuth for public apps. The CRM API covers contacts, companies, deals, and tickets. Use the Search API for complex queries. Webhook subscriptions require a valid endpoint that responds to verification challenges. ## Xero Accounting Integration Xero uses OAuth 2.0. The API base is https://api.xero.com/api.xro/2.0/. Endpoints include Invoices, Contacts, Payments, and BankTransactions. Connections are tenant-specific—multi-tenant apps must handle organization switching. Rate limits: 60 calls per minute per organization. ## PostgreSQL Best Practices Use connection pooling (PgBouncer) for web applications. Index foreign keys and frequently queried columns. Avoid N+1 queries—use JOINs or batch loading. For large tables, consider partitioning by date. Always use parameterized queries to prevent SQL injection. ## Redis Caching Patterns Use Redis for session storage, rate limiting, and cache-aside patterns. Set TTLs on cached data to prevent stale reads. Consider Redis Cluster for high availability. Monitor memory usage—Redis holds everything in RAM. ## HubSpot CRM Integration HubSpot offers a REST API and webhooks for real-time sync. Authentication uses private apps (access token) or OAuth for public apps. The CRM API covers contacts, companies, deals, and tickets. Use the Search API for complex queries. Webhook subscriptions require a valid endpoint that responds to verification challenges. ## Xero Accounting Integration Xero uses OAuth 2.0. The API base is https://api.xero.com/api.xro/2.0/. Endpoints include Invoices, Contacts, Payments, and BankTransactions. Connections are tenant-specific—multi-tenant apps must handle organization switching. Rate limits: 60 calls per minute per organization. ## PostgreSQL Best Practices Use connection pooling (PgBouncer) for web applications. Index foreign keys and frequently queried columns. Avoid N+1 queries—use JOINs or batch loading. For large tables, consider partitioning by date. Always use parameterized queries to prevent SQL injection. ## Redis Caching Patterns Use Redis for session storage, rate limiting, and cache-aside patterns. Set TTLs on cached data to prevent stale reads. Consider Redis Cluster for high availability. Monitor memory usage—Redis holds everything in RAM. ## HubSpot CRM Integration HubSpot offers a REST API and webhooks for real-time sync. Authentication uses private apps (access token) or OAuth for public apps. The CRM API covers contacts, companies, deals, and tickets. Use the Search API for complex queries. Webhook subscriptions require a valid endpoint that responds to verification challenges. ## Xero Accounting Integration Xero uses OAuth 2.0. The API base is https://api.xero.com/api.xro/2.0/. Endpoints include Invoices, Contacts, Payments, and BankTransactions. Connections are tenant-specific—multi-tenant apps must handle organization switching. Rate limits: 60 calls per minute per organization. ## PostgreSQL Best Practices Use connection pooling (PgBouncer) for web applications. Index foreign keys and frequently queried columns. Avoid N+1 queries—use JOINs or batch loading. For large tables, consider partitioning by date. Always use parameterized queries to prevent SQL injection. ## Redis Caching Patterns Use Redis for session storage, rate limiting, and cache-aside patterns. Set TTLs on cached data to prevent stale reads. Consider Redis Cluster for high availability. Monitor memory usage—Redis holds everything in RAM. ## HubSpot CRM Integration HubSpot offers a REST API and webhooks for real-time sync. Authentication uses private apps (access token) or OAuth for public apps. The CRM API covers contacts, companies, deals, and tickets. Use the Search API for complex queries. Webhook subscriptions require a valid endpoint that responds to verification challenges. ## Xero Accounting Integration Xero uses OAuth 2.0. The API base is https://api.xero.com/api.xro/2.0/. Endpoints include Invoices, Contacts, Payments, and BankTransactions. Connections are tenant-specific—multi-tenant apps must handle organization switching. Rate limits: 60 calls per minute per organization. ## PostgreSQL Best Practices Use connection pooling (PgBouncer) for web applications. Index foreign keys and frequently queried columns. Avoid N+1 queries—use JOINs or batch loading. For large tables, consider partitioning by date. Always use parameterized queries to prevent SQL injection. ## Redis Caching Patterns Use Redis for session storage, rate limiting, and cache-aside patterns. Set TTLs on cached data to prevent stale reads. Consider Redis Cluster for high availability. Monitor memory usage—Redis holds everything in RAM. ## HubSpot CRM Integration HubSpot offers a REST API and webhooks for real-time sync. Authentication uses private apps (access token) or OAuth for public apps. The CRM API covers contacts, companies, deals, and tickets. Use the Search API for complex queries. Webhook subscriptions require a valid endpoint that responds to verification challenges. ## Xero Accounting Integration Xero uses OAuth 2.0. The API base is https://api.xero.com/api.xro/2.0/. Endpoints include Invoices, Contacts, Payments, and BankTransactions. Connections are tenant-specific—multi-tenant apps must handle organization switching. Rate limits: 60 calls per minute per organization. ## PostgreSQL Best Practices Use connection pooling (PgBouncer) for web applications. Index foreign keys and frequently queried columns. Avoid N+1 queries—use JOINs or batch loading. For large tables, consider partitioning by date. Always use parameterized queries to prevent SQL injection. ## Redis Caching Patterns Use Redis for session storage, rate limiting, and cache-aside patterns. Set TTLs on cached data to prevent stale reads. Consider Redis Cluster for high availability. Monitor memory usage—Redis holds everything in RAM. ## HubSpot CRM Integration HubSpot offers a REST API and webhooks for real-time sync. Authentication uses private apps (access token) or OAuth for public apps. The CRM API covers contacts, companies, deals, and tickets. Use the Search API for complex queries. Webhook subscriptions require a valid endpoint that responds to verification challenges. ## Xero Accounting Integration Xero uses OAuth 2.0. The API base is https://api.xero.com/api.xro/2.0/. Endpoints include Invoices, Contacts, Payments, and BankTransactions. Connections are tenant-specific—multi-tenant apps must handle organization switching. Rate limits: 60 calls per minute per organization. ## PostgreSQL Best Practices Use connection pooling (PgBouncer) for web applications. Index foreign keys and frequently queried columns. Avoid N+1 queries—use JOINs or batch loading. For large tables, consider partitioning by date. Always use parameterized queries to prevent SQL injection. ## Redis Caching Patterns Use Redis for session storage, rate limiting, and cache-aside patterns. Set TTLs on cached data to prevent stale reads. Consider Redis Cluster for high availability. Monitor memory usage—Redis holds everything in RAM. ## HubSpot CRM Integration HubSpot offers a REST API and webhooks for real-time sync. Authentication uses private apps (access token) or OAuth for public apps. The CRM API covers contacts, companies, deals, and tickets. Use the Search API for complex queries. Webhook subscriptions require a valid endpoint that responds to verification challenges. ## Xero Accounting Integration Xero uses OAuth 2.0. The API base is https://api.xero.com/api.xro/2.0/. Endpoints include Invoices, Contacts, Payments, and BankTransactions. Connections are tenant-specific—multi-tenant apps must handle organization switching. Rate limits: 60 calls per minute per organization. ## PostgreSQL Best Practices Use connection pooling (PgBouncer) for web applications. Index foreign keys and frequently queried columns. Avoid N+1 queries—use JOINs or batch loading. For large tables, consider partitioning by date. Always use parameterized queries to prevent SQL injection. ## Redis Caching Patterns Use Redis for session storage, rate limiting, and cache-aside patterns. Set TTLs on cached data to prevent stale reads. Consider Redis Cluster for high availability. Monitor memory usage—Redis holds everything in RAM. ## HubSpot CRM Integration HubSpot offers a REST API and webhooks for real-time sync. Authentication uses private apps (access token) or OAuth for public apps. The CRM API covers contacts, companies, deals, and tickets. Use the Search API for complex queries. Webhook subscriptions require a valid endpoint that responds to verification challenges. ## Xero Accounting Integration Xero uses OAuth 2.0. The API base is https://api.xero.com/api.xro/2.0/. Endpoints include Invoices, Contacts, Payments, and BankTransactions. Connections are tenant-specific—multi-tenant apps must handle organization switching. Rate limits: 60 calls per minute per organization. ## PostgreSQL Best Practices Use connection pooling (PgBouncer) for web applications. Index foreign keys and frequently queried columns. Avoid N+1 queries—use JOINs or batch loading. For large tables, consider partitioning by date. Always use parameterized queries to prevent SQL injection. ## Redis Caching Patterns Use Redis for session storage, rate limiting, and cache-aside patterns. Set TTLs on cached data to prevent stale reads. Consider Redis Cluster for high availability. Monitor memory usage—Redis holds everything in RAM. ## HubSpot CRM Integration HubSpot offers a REST API and webhooks for real-time sync. Authentication uses private apps (access token) or OAuth for public apps. The CRM API covers contacts, companies, deals, and tickets. Use the Search API for complex queries. Webhook subscriptions require a valid endpoint that responds to verification challenges. ## Xero Accounting Integration Xero uses OAuth 2.0. The API base is https://api.xero.com/api.xro/2.0/. Endpoints include Invoices, Contacts, Payments, and BankTransactions. Connections are tenant-specific—multi-tenant apps must handle organization switching. Rate limits: 60 calls per minute per organization. ## PostgreSQL Best Practices Use connection pooling (PgBouncer) for web applications. Index foreign keys and frequently queried columns. Avoid N+1 queries—use JOINs or batch loading. For large tables, consider partitioning by date. Always use parameterized queries to prevent SQL injection. ## Redis Caching Patterns Use Redis for session storage, rate limiting, and cache-aside patterns. Set TTLs on cached data to prevent stale reads. Consider Redis Cluster for high availability. Monitor memory usage—Redis holds everything in RAM. ## HubSpot CRM Integration HubSpot offers a REST API and webhooks for real-time sync. Authentication uses private apps (access token) or OAuth for public apps. The CRM API covers contacts, companies, deals, and tickets. Use the Search API for complex queries. Webhook subscriptions require a valid endpoint that responds to verification challenges. ## Xero Accounting Integration Xero uses OAuth 2.0. The API base is https://api.xero.com/api.xro/2.0/. Endpoints include Invoices, Contacts, Payments, and BankTransactions. Connections are tenant-specific—multi-tenant apps must handle organization switching. Rate limits: 60 calls per minute per organization. ## PostgreSQL Best Practices Use connection pooling (PgBouncer) for web applications. Index foreign keys and frequently queried columns. Avoid N+1 queries—use JOINs or batch loading. For large tables, consider partitioning by date. Always use parameterized queries to prevent SQL injection. ## Redis Caching Patterns Use Redis for session storage, rate limiting, and cache-aside patterns. Set TTLs on cached data to prevent stale reads. Consider Redis Cluster for high availability. Monitor memory usage—Redis holds everything in RAM. ## HubSpot CRM Integration HubSpot offers a REST API and webhooks for real-time sync. Authentication uses private apps (access token) or OAuth for public apps. The CRM API covers contacts, companies, deals, and tickets. Use the Search API for complex queries. Webhook subscriptions require a valid endpoint that responds to verification challenges. ## Xero Accounting Integration Xero uses OAuth 2.0. The API base is https://api.xero.com/api.xro/2.0/. Endpoints include Invoices, Contacts, Payments, and BankTransactions. Connections are tenant-specific—multi-tenant apps must handle organization switching. Rate limits: 60 calls per minute per organization. ## PostgreSQL Best Practices Use connection pooling (PgBouncer) for web applications. Index foreign keys and frequently queried columns. Avoid N+1 queries—use JOINs or batch loading. For large tables, consider partitioning by date. Always use parameterized queries to prevent SQL injection. ## Redis Caching Patterns Use Redis for session storage, rate limiting, and cache-aside patterns. Set TTLs on cached data to prevent stale reads. Consider Redis Cluster for high availability. Monitor memory usage—Redis holds everything in RAM. ## HubSpot CRM Integration HubSpot offers a REST API and webhooks for real-time sync. Authentication uses private apps (access token) or OAuth for public apps. The CRM API covers contacts, companies, deals, and tickets. Use the Search API for complex queries. Webhook subscriptions require a valid endpoint that responds to verification challenges. ## Xero Accounting Integration Xero uses OAuth 2.0. The API base is https://api.xero.com/api.xro/2.0/. Endpoints include Invoices, Contacts, Payments, and BankTransactions. Connections are tenant-specific—multi-tenant apps must handle organization switching. Rate limits: 60 calls per minute per organization. ## PostgreSQL Best Practices Use connection pooling (PgBouncer) for web applications. Index foreign keys and frequently queried columns. Avoid N+1 queries—use JOINs or batch loading. For large tables, consider partitioning by date. Always use parameterized queries to prevent SQL injection. ## Redis Caching Patterns Use Redis for session storage, rate limiting, and cache-aside patterns. Set TTLs on cached data to prevent stale reads. Consider Redis Cluster for high availability. Monitor memory usage—Redis holds everything in RAM. ## HubSpot CRM Integration HubSpot offers a REST API and webhooks for real-time sync. Authentication uses private apps (access token) or OAuth for public apps. The CRM API covers contacts, companies, deals, and tickets. Use the Search API for complex queries. Webhook subscriptions require a valid endpoint that responds to verification challenges. ## Xero Accounting Integration Xero uses OAuth 2.0. The API base is https://api.xero.com/api.xro/2.0/. Endpoints include Invoices, Contacts, Payments, and BankTransactions. Connections are tenant-specific—multi-tenant apps must handle organization switching. Rate limits: 60 calls per minute per organization. ## PostgreSQL Best Practices Use connection pooling (PgBouncer) for web applications. Index foreign keys and frequently queried columns. Avoid N+1 queries—use JOINs or batch loading. For large tables, consider partitioning by date. Always use parameterized queries to prevent SQL injection. ## Redis Caching Patterns Use Redis for session storage, rate limiting, and cache-aside patterns. Set TTLs on cached data to prevent stale reads. Consider Redis Cluster for high availability. Monitor memory usage—Redis holds everything in RAM. ## HubSpot CRM Integration HubSpot offers a REST API and webhooks for real-time sync. Authentication uses private apps (access token) or OAuth for public apps. The CRM API covers contacts, companies, deals, and tickets. Use the Search API for complex queries. Webhook subscriptions require a valid endpoint that responds to verification challenges. ## Xero Accounting Integration Xero uses OAuth 2.0. The API base is https://api.xero.com/api.xro/2.0/. Endpoints include Invoices, Contacts, Payments, and BankTransactions. Connections are tenant-specific—multi-tenant apps must handle organization switching. Rate limits: 60 calls per minute per organization. ## PostgreSQL Best Practices Use connection pooling (PgBouncer) for web applications. Index foreign keys and frequently queried columns. Avoid N+1 queries—use JOINs or batch loading. For large tables, consider partitioning by date. Always use parameterized queries to prevent SQL injection. ## Redis Caching Patterns Use Redis for session storage, rate limiting, and cache-aside patterns. Set TTLs on cached data to prevent stale reads. Consider Redis Cluster for high availability. Monitor memory usage—Redis holds everything in RAM. ## HubSpot CRM Integration HubSpot offers a REST API and webhooks for real-time sync. Authentication uses private apps (access token) or OAuth for public apps. The CRM API covers contacts, companies, deals, and tickets. Use the Search API for complex queries. Webhook subscriptions require a valid endpoint that responds to verification challenges. ## Xero Accounting Integration Xero uses OAuth 2.0. The API base is https://api.xero.com/api.xro/2.0/. Endpoints include Invoices, Contacts, Payments, and BankTransactions. Connections are tenant-specific—multi-tenant apps must handle organization switching. Rate limits: 60 calls per minute per organization. ## PostgreSQL Best Practices Use connection pooling (PgBouncer) for web applications. Index foreign keys and frequently queried columns. Avoid N+1 queries—use JOINs or batch loading. For large tables, consider partitioning by date. Always use parameterized queries to prevent SQL injection. ## Redis Caching Patterns Use Redis for session storage, rate limiting, and cache-aside patterns. Set TTLs on cached data to prevent stale reads. Consider Redis Cluster for high availability. Monitor memory usage—Redis holds everything in RAM. ## HubSpot CRM Integration HubSpot offers a REST API and webhooks for real-time sync. Authentication uses private apps (access token) or OAuth for public apps. The CRM API covers contacts, companies, deals, and tickets. Use the Search API for complex queries. Webhook subscriptions require a valid endpoint that responds to verification challenges. ## Xero Accounting Integration Xero uses OAuth 2.0. The API base is https://api.xero.com/api.xro/2.0/. Endpoints include Invoices, Contacts, Payments, and BankTransactions. Connections are tenant-specific—multi-tenant apps must handle organization switching. Rate limits: 60 calls per minute per organization. ## PostgreSQL Best Practices Use connection pooling (PgBouncer) for web applications. Index foreign keys and frequently queried columns. Avoid N+1 queries—use JOINs or batch loading. For large tables, consider partitioning by date. Always use parameterized queries to prevent SQL injection. ## Redis Caching Patterns Use Redis for session storage, rate limiting, and cache-aside patterns. Set TTLs on cached data to prevent stale reads. Consider Redis Cluster for high availability. Monitor memory usage—Redis holds everything in RAM. ## HubSpot CRM Integration HubSpot offers a REST API and webhooks for real-time sync. Authentication uses private apps (access token) or OAuth for public apps. The CRM API covers contacts, companies, deals, and tickets. Use the Search API for complex queries. Webhook subscriptions require a valid endpoint that responds to verification challenges. ## Xero Accounting Integration Xero uses OAuth 2.0. The API base is https://api.xero.com/api.xro/2.0/. Endpoints include Invoices, Contacts, Payments, and BankTransactions. Connections are tenant-specific—multi-tenant apps must handle organization switching. Rate limits: 60 calls per minute per organization. ## PostgreSQL Best Practices Use connection pooling (PgBouncer) for web applications. Index foreign keys and frequently queried columns. Avoid N+1 queries—use JOINs or batch loading. For large tables, consider partitioning by date. Always use parameterized queries to prevent SQL injection. ## Redis Caching Patterns Use Redis for session storage, rate limiting, and cache-aside patterns. Set TTLs on cached data to prevent stale reads. Consider Redis Cluster for high availability. Monitor memory usage—Redis holds everything in RAM. ## HubSpot CRM Integration HubSpot offers a REST API and webhooks for real-time sync. Authentication uses private apps (access token) or OAuth for public apps. The CRM API covers contacts, companies, deals, and tickets. Use the Search API for complex queries. Webhook subscriptions require a valid endpoint that responds to verification challenges. ## Xero Accounting Integration Xero uses OAuth 2.0. The API base is https://api.xero.com/api.xro/2.0/. Endpoints include Invoices, Contacts, Payments, and BankTransactions. Connections are tenant-specific—multi-tenant apps must handle organization switching. Rate limits: 60 calls per minute per organization. ## PostgreSQL Best Practices Use connection pooling (PgBouncer) for web applications. Index foreign keys and frequently queried columns. Avoid N+1 queries—use JOINs or batch loading. For large tables, consider partitioning by date. Always use parameterized queries to prevent SQL injection. ## Redis Caching Patterns Use Redis for session storage, rate limiting, and cache-aside patterns. Set TTLs on cached data to prevent stale reads. Consider Redis Cluster for high availability. Monitor memory usage—Redis holds everything in RAM. ## HubSpot CRM Integration HubSpot offers a REST API and webhooks for real-time sync. Authentication uses private apps (access token) or OAuth for public apps. The CRM API covers contacts, companies, deals, and tickets. Use the Search API for complex queries. Webhook subscriptions require a valid endpoint that responds to verification challenges. ## Xero Accounting Integration Xero uses OAuth 2.0. The API base is https://api.xero.com/api.xro/2.0/. Endpoints include Invoices, Contacts, Payments, and BankTransactions. Connections are tenant-specific—multi-tenant apps must handle organization switching. Rate limits: 60 calls per minute per organization. ## PostgreSQL Best Practices Use connection pooling (PgBouncer) for web applications. Index foreign keys and frequently queried columns. Avoid N+1 queries—use JOINs or batch loading. For large tables, consider partitioning by date. Always use parameterized queries to prevent SQL injection. ## Redis Caching Patterns Use Redis for session storage, rate limiting, and cache-aside patterns. Set TTLs on cached data to prevent stale reads. Consider Redis Cluster for high availability. Monitor memory usage—Redis holds everything in RAM. ## HubSpot CRM Integration HubSpot offers a REST API and webhooks for real-time sync. Authentication uses private apps (access token) or OAuth for public apps. The CRM API covers contacts, companies, deals, and tickets. Use the Search API for complex queries. Webhook subscriptions require a valid endpoint that responds to verification challenges. ## Xero Accounting Integration Xero uses OAuth 2.0. The API base is https://api.xero.com/api.xro/2.0/. Endpoints include Invoices, Contacts, Payments, and BankTransactions. Connections are tenant-specific—multi-tenant apps must handle organization switching. Rate limits: 60 calls per minute per organization. ## PostgreSQL Best Practices Use connection pooling (PgBouncer) for web applications. Index foreign keys and frequently queried columns. Avoid N+1 queries—use JOINs or batch loading. For large tables, consider partitioning by date. Always use parameterized queries to prevent SQL injection. ## Redis Caching Patterns Use Redis for session storage, rate limiting, and cache-aside patterns. Set TTLs on cached data to prevent stale reads. Consider Redis Cluster for high availability. Monitor memory usage—Redis holds everything in RAM. ## HubSpot CRM Integration HubSpot offers a REST API and webhooks for real-time sync. Authentication uses private apps (access token) or OAuth for public apps. The CRM API covers contacts, companies, deals, and tickets. Use the Search API for complex queries. Webhook subscriptions require a valid endpoint that responds to verification challenges. ## Xero Accounting Integration Xero uses OAuth 2.0. The API base is https://api.xero.com/api.xro/2.0/. Endpoints include Invoices, Contacts, Payments, and BankTransactions. Connections are tenant-specific—multi-tenant apps must handle organization switching. Rate limits: 60 calls per minute per organization. ## PostgreSQL Best Practices Use connection pooling (PgBouncer) for web applications. Index foreign keys and frequently queried columns. Avoid N+1 queries—use JOINs or batch loading. For large tables, consider partitioning by date. Always use parameterized queries to prevent SQL injection. ## Redis Caching Patterns Use Redis for session storage, rate limiting, and cache-aside patterns. Set TTLs on cached data to prevent stale reads. Consider Redis Cluster for high availability. Monitor memory usage—Redis holds everything in RAM. ## HubSpot CRM Integration HubSpot offers a REST API and webhooks for real-time sync. Authentication uses private apps (access token) or OAuth for public apps. The CRM API covers contacts, companies, deals, and tickets. Use the Search API for complex queries. Webhook subscriptions require a valid endpoint that responds to verification challenges. ## Xero Accounting Integration Xero uses OAuth 2.0. The API base is https://api.xero.com/api.xro/2.0/. Endpoints include Invoices, Contacts, Payments, and BankTransactions. Connections are tenant-specific—multi-tenant apps must handle organization switching. Rate limits: 60 calls per minute per organization. ## PostgreSQL Best Practices Use connection pooling (PgBouncer) for web applications. Index foreign keys and frequently queried columns. Avoid N+1 queries—use JOINs or batch loading. For large tables, consider partitioning by date. Always use parameterized queries to prevent SQL injection. ## Redis Caching Patterns Use Redis for session storage, rate limiting, and cache-aside patterns. Set TTLs on cached data to prevent stale reads. Consider Redis Cluster for high availability. Monitor memory usage—Redis holds everything in RAM. ## HubSpot CRM Integration HubSpot offers a REST API and webhooks for real-time sync. Authentication uses private apps (access token) or OAuth for public apps. The CRM API covers contacts, companies, deals, and tickets. Use the Search API for complex queries. Webhook subscriptions require a valid endpoint that responds to verification challenges. ## Xero Accounting Integration Xero uses OAuth 2.0. The API base is https://api.xero.com/api.xro/2.0/. Endpoints include Invoices, Contacts, Payments, and BankTransactions. Connections are tenant-specific—multi-tenant apps must handle organization switching. Rate limits: 60 calls per minute per organization. ## PostgreSQL Best Practices Use connection pooling (PgBouncer) for web applications. Index foreign keys and frequently queried columns. Avoid N+1 queries—use JOINs or batch loading. For large tables, consider partitioning by date. Always use parameterized queries to prevent SQL injection. ## Redis Caching Patterns Use Redis for session storage, rate limiting, and cache-aside patterns. Set TTLs on cached data to prevent stale reads. Consider Redis Cluster for high availability. Monitor memory usage—Redis holds everything in RAM. ## HubSpot CRM Integration HubSpot offers a REST API and webhooks for real-time sync. Authentication uses private apps (access token) or OAuth for public apps. The CRM API covers contacts, companies, deals, and tickets. Use the Search API for complex queries. Webhook subscriptions require a valid endpoint that responds to verification challenges. ## Xero Accounting Integration Xero uses OAuth 2.0. The API base is https://api.xero.com/api.xro/2.0/. Endpoints include Invoices, Contacts, Payments, and BankTransactions. Connections are tenant-specific—multi-tenant apps must handle organization switching. Rate limits: 60 calls per minute per organization. ## PostgreSQL Best Practices Use connection pooling (PgBouncer) for web applications. Index foreign keys and frequently queried columns. Avoid N+1 queries—use JOINs or batch loading. For large tables, consider partitioning by date. Always use parameterized queries to prevent SQL injection. ## Redis Caching Patterns Use Redis for session storage, rate limiting, and cache-aside patterns. Set TTLs on cached data to prevent stale reads. Consider Redis Cluster for high availability. Monitor memory usage—Redis holds everything in RAM. ## HubSpot CRM Integration HubSpot offers a REST API and webhooks for real-time sync. Authentication uses private apps (access token) or OAuth for public apps. The CRM API covers contacts, companies, deals, and tickets. Use the Search API for complex queries. Webhook subscriptions require a valid endpoint that responds to verification challenges. ## Xero Accounting Integration Xero uses OAuth 2.0. The API base is https://api.xero.com/api.xro/2.0/. Endpoints include Invoices, Contacts, Payments, and BankTransactions. Connections are tenant-specific—multi-tenant apps must handle organization switching. Rate limits: 60 calls per minute per organization. ## PostgreSQL Best Practices Use connection pooling (PgBouncer) for web applications. Index foreign keys and frequently queried columns. Avoid N+1 queries—use JOINs or batch loading. For large tables, consider partitioning by date. Always use parameterized queries to prevent SQL injection. ## Redis Caching Patterns Use Redis for session storage, rate limiting, and cache-aside patterns. Set TTLs on cached data to prevent stale reads. Consider Redis Cluster for high availability. Monitor memory usage—Redis holds everything in RAM. ## HubSpot CRM Integration HubSpot offers a REST API and webhooks for real-time sync. Authentication uses private apps (access token) or OAuth for public apps. The CRM API covers contacts, companies, deals, and tickets. Use the Search API for complex queries. Webhook subscriptions require a valid endpoint that responds to verification challenges. ## Xero Accounting Integration Xero uses OAuth 2.0. The API base is https://api.xero.com/api.xro/2.0/. Endpoints include Invoices, Contacts, Payments, and BankTransactions. Connections are tenant-specific—multi-tenant apps must handle organization switching. Rate limits: 60 calls per minute per organization. ## PostgreSQL Best Practices Use connection pooling (PgBouncer) for web applications. Index foreign keys and frequently queried columns. Avoid N+1 queries—use JOINs or batch loading. For large tables, consider partitioning by date. Always use parameterized queries to prevent SQL injection. ## Redis Caching Patterns Use Redis for session storage, rate limiting, and cache-aside patterns. Set TTLs on cached data to prevent stale reads. Consider Redis Cluster for high availability. Monitor memory usage—Redis holds everything in RAM. ## HubSpot CRM Integration HubSpot offers a REST API and webhooks for real-time sync. Authentication uses private apps (access token) or OAuth for public apps. The CRM API covers contacts, companies, deals, and tickets. Use the Search API for complex queries. Webhook subscriptions require a valid endpoint that responds to verification challenges. ## Xero Accounting Integration Xero uses OAuth 2.0. The API base is https://api.xero.com/api.xro/2.0/. Endpoints include Invoices, Contacts, Payments, and BankTransactions. Connections are tenant-specific—multi-tenant apps must handle organization switching. Rate limits: 60 calls per minute per organization. ## PostgreSQL Best Practices Use connection pooling (PgBouncer) for web applications. Index foreign keys and frequently queried columns. Avoid N+1 queries—use JOINs or batch loading. For large tables, consider partitioning by date. Always use parameterized queries to prevent SQL injection. ## Redis Caching Patterns Use Redis for session storage, rate limiting, and cache-aside patterns. Set TTLs on cached data to prevent stale reads. Consider Redis Cluster for high availability. Monitor memory usage—Redis holds everything in RAM. ## HubSpot CRM Integration HubSpot offers a REST API and webhooks for real-time sync. Authentication uses private apps (access token) or OAuth for public apps. The CRM API covers contacts, companies, deals, and tickets. Use the Search API for complex queries. Webhook subscriptions require a valid endpoint that responds to verification challenges. ## Xero Accounting Integration Xero uses OAuth 2.0. The API base is https://api.xero.com/api.xro/2.0/. Endpoints include Invoices, Contacts, Payments, and BankTransactions. Connections are tenant-specific—multi-tenant apps must handle organization switching. Rate limits: 60 calls per minute per organization. ## PostgreSQL Best Practices Use connection pooling (PgBouncer) for web applications. Index foreign keys and frequently queried columns. Avoid N+1 queries—use JOINs or batch loading. For large tables, consider partitioning by date. Always use parameterized queries to prevent SQL injection. ## Redis Caching Patterns Use Redis for session storage, rate limiting, and cache-aside patterns. Set TTLs on cached data to prevent stale reads. Consider Redis Cluster for high availability. Monitor memory usage—Redis holds everything in RAM. ## HubSpot CRM Integration HubSpot offers a REST API and webhooks for real-time sync. Authentication uses private apps (access token) or OAuth for public apps. The CRM API covers contacts, companies, deals, and tickets. Use the Search API for complex queries. Webhook subscriptions require a valid endpoint that responds to verification challenges. ## Xero Accounting Integration Xero uses OAuth 2.0. The API base is https://api.xero.com/api.xro/2.0/. Endpoints include Invoices, Contacts, Payments, and BankTransactions. Connections are tenant-specific—multi-tenant apps must handle organization switching. Rate limits: 60 calls per minute per organization. ## PostgreSQL Best Practices Use connection pooling (PgBouncer) for web applications. Index foreign keys and frequently queried columns. Avoid N+1 queries—use JOINs or batch loading. For large tables, consider partitioning by date. Always use parameterized queries to prevent SQL injection. ## Redis Caching Patterns Use Redis for session storage, rate limiting, and cache-aside patterns. Set TTLs on cached data to prevent stale reads. Consider Redis Cluster for high availability. Monitor memory usage—Redis holds everything in RAM. ## HubSpot CRM Integration HubSpot offers a REST API and webhooks for real-time sync. Authentication uses private apps (access token) or OAuth for public apps. The CRM API covers contacts, companies, deals, and tickets. Use the Search API for complex queries. Webhook subscriptions require a valid endpoint that responds to verification challenges. ## Xero Accounting Integration Xero uses OAuth 2.0. The API base is https://api.xero.com/api.xro/2.0/. Endpoints include Invoices, Contacts, Payments, and BankTransactions. Connections are tenant-specific—multi-tenant apps must handle organization switching. Rate limits: 60 calls per minute per organization. ## PostgreSQL Best Practices Use connection pooling (PgBouncer) for web applications. Index foreign keys and frequently queried columns. Avoid N+1 queries—use JOINs or batch loading. For large tables, consider partitioning by date. Always use parameterized queries to prevent SQL injection. ## Redis Caching Patterns Use Redis for session storage, rate limiting, and cache-aside patterns. Set TTLs on cached data to prevent stale reads. Consider Redis Cluster for high availability. Monitor memory usage—Redis holds everything in RAM. ## HubSpot CRM Integration HubSpot offers a REST API and webhooks for real-time sync. Authentication uses private apps (access token) or OAuth for public apps. The CRM API covers contacts, companies, deals, and tickets. Use the Search API for complex queries. Webhook subscriptions require a valid endpoint that responds to verification challenges. ## Xero Accounting Integration Xero uses OAuth 2.0. The API base is https://api.xero.com/api.xro/2.0/. Endpoints include Invoices, Contacts, Payments, and BankTransactions. Connections are tenant-specific—multi-tenant apps must handle organization switching. Rate limits: 60 calls per minute per organization. ## PostgreSQL Best Practices Use connection pooling (PgBouncer) for web applications. Index foreign keys and frequently queried columns. Avoid N+1 queries—use JOINs or batch loading. For large tables, consider partitioning by date. Always use parameterized queries to prevent SQL injection. ## Redis Caching Patterns Use Redis for session storage, rate limiting, and cache-aside patterns. Set TTLs on cached data to prevent stale reads. Consider Redis Cluster for high availability. Monitor memory usage—Redis holds everything in RAM. ## HubSpot CRM Integration HubSpot offers a REST API and webhooks for real-time sync. Authentication uses private apps (access token) or OAuth for public apps. The CRM API covers contacts, companies, deals, and tickets. Use the Search API for complex queries. Webhook subscriptions require a valid endpoint that responds to verification challenges. ## Xero Accounting Integration Xero uses OAuth 2.0. The API base is https://api.xero.com/api.xro/2.0/. Endpoints include Invoices, Contacts, Payments, and BankTransactions. Connections are tenant-specific—multi-tenant apps must handle organization switching. Rate limits: 60 calls per minute per organization. ## PostgreSQL Best Practices Use connection pooling (PgBouncer) for web applications. Index foreign keys and frequently queried columns. Avoid N+1 queries—use JOINs or batch loading. For large tables, consider partitioning by date. Always use parameterized queries to prevent SQL injection. ## Redis Caching Patterns Use Redis for session storage, rate limiting, and cache-aside patterns. Set TTLs on cached data to prevent stale reads. Consider Redis Cluster for high availability. Monitor memory usage—Redis holds everything in RAM. ## HubSpot CRM Integration HubSpot offers a REST API and webhooks for real-time sync. Authentication uses private apps (access token) or OAuth for public apps. The CRM API covers contacts, companies, deals, and tickets. Use the Search API for complex queries. Webhook subscriptions require a valid endpoint that responds to verification challenges. ## Xero Accounting Integration Xero uses OAuth 2.0. The API base is https://api.xero.com/api.xro/2.0/. Endpoints include Invoices, Contacts, Payments, and BankTransactions. Connections are tenant-specific—multi-tenant apps must handle organization switching. Rate limits: 60 calls per minute per organization. ## PostgreSQL Best Practices Use connection pooling (PgBouncer) for web applications. Index foreign keys and frequently queried columns. Avoid N+1 queries—use JOINs or batch loading. For large tables, consider partitioning by date. Always use parameterized queries to prevent SQL injection. ## Redis Caching Patterns Use Redis for session storage, rate limiting, and cache-aside patterns. Set TTLs on cached data to prevent stale reads. Consider Redis Cluster for high availability. Monitor memory usage—Redis holds everything in RAM. ## HubSpot CRM Integration HubSpot offers a REST API and webhooks for real-time sync. Authentication uses private apps (access token) or OAuth for public apps. The CRM API covers contacts, companies, deals, and tickets. Use the Search API for complex queries. Webhook subscriptions require a valid endpoint that responds to verification challenges. ## Xero Accounting Integration Xero uses OAuth 2.0. The API base is https://api.xero.com/api.xro/2.0/. Endpoints include Invoices, Contacts, Payments, and BankTransactions. Connections are tenant-specific—multi-tenant apps must handle organization switching. Rate limits: 60 calls per minute per organization. ## PostgreSQL Best Practices Use connection pooling (PgBouncer) for web applications. Index foreign keys and frequently queried columns. Avoid N+1 queries—use JOINs or batch loading. For large tables, consider partitioning by date. Always use parameterized queries to prevent SQL injection. ## Redis Caching Patterns Use Redis for session storage, rate limiting, and cache-aside patterns. Set TTLs on cached data to prevent stale reads. Consider Redis Cluster for high availability. Monitor memory usage—Redis holds everything in RAM. ## HubSpot CRM Integration HubSpot offers a REST API and webhooks for real-time sync. Authentication uses private apps (access token) or OAuth for public apps. The CRM API covers contacts, companies, deals, and tickets. Use the Search API for complex queries. Webhook subscriptions require a valid endpoint that responds to verification challenges. ## Xero Accounting Integration Xero uses OAuth 2.0. The API base is https://api.xero.com/api.xro/2.0/. Endpoints include Invoices, Contacts, Payments, and BankTransactions. Connections are tenant-specific—multi-tenant apps must handle organization switching. Rate limits: 60 calls per minute per organization. ## PostgreSQL Best Practices Use connection pooling (PgBouncer) for web applications. Index foreign keys and frequently queried columns. Avoid N+1 queries—use JOINs or batch loading. For large tables, consider partitioning by date. Always use parameterized queries to prevent SQL injection. ## Redis Caching Patterns Use Redis for session storage, rate limiting, and cache-aside patterns. Set TTLs on cached data to prevent stale reads. Consider Redis Cluster for high availability. Monitor memory usage—Redis holds everything in RAM. ## HubSpot CRM Integration HubSpot offers a REST API and webhooks for real-time sync. Authentication uses private apps (access token) or OAuth for public apps. The CRM API covers contacts, companies, deals, and tickets. Use the Search API for complex queries. Webhook subscriptions require a valid endpoint that responds to verification challenges. ## Xero Accounting Integration Xero uses OAuth 2.0. The API base is https://api.xero.com/api.xro/2.0/. Endpoints include Invoices, Contacts, Payments, and BankTransactions. Connections are tenant-specific—multi-tenant apps must handle organization switching. Rate limits: 60 calls per minute per organization. ## PostgreSQL Best Practices Use connection pooling (PgBouncer) for web applications. Index foreign keys and frequently queried columns. Avoid N+1 queries—use JOINs or batch loading. For large tables, consider partitioning by date. Always use parameterized queries to prevent SQL injection. ## Redis Caching Patterns Use Redis for session storage, rate limiting, and cache-aside patterns. Set TTLs on cached data to prevent stale reads. Consider Redis Cluster for high availability. Monitor memory usage—Redis holds everything in RAM. ## HubSpot CRM Integration HubSpot offers a REST API and webhooks for real-time sync. Authentication uses private apps (access token) or OAuth for public apps. The CRM API covers contacts, companies, deals, and tickets. Use the Search API for complex queries. Webhook subscriptions require a valid endpoint that responds to verification challenges. ## Xero Accounting Integration Xero uses OAuth 2.0. The API base is https://api.xero.com/api.xro/2.0/. Endpoints include Invoices, Contacts, Payments, and BankTransactions. Connections are tenant-specific—multi-tenant apps must handle organization switching. Rate limits: 60 calls per minute per organization. ## PostgreSQL Best Practices Use connection pooling (PgBouncer) for web applications. Index foreign keys and frequently queried columns. Avoid N+1 queries—use JOINs or batch loading. For large tables, consider partitioning by date. Always use parameterized queries to prevent SQL injection. ## Redis Caching Patterns Use Redis for session storage, rate limiting, and cache-aside patterns. Set TTLs on cached data to prevent stale reads. Consider Redis Cluster for high availability. Monitor memory usage—Redis holds everything in RAM. ## HubSpot CRM Integration HubSpot offers a REST API and webhooks for real-time sync. Authentication uses private apps (access token) or OAuth for public apps. The CRM API covers contacts, companies, deals, and tickets. Use the Search API for complex queries. Webhook subscriptions require a valid endpoint that responds to verification challenges. ## Xero Accounting Integration Xero uses OAuth 2.0. The API base is https://api.xero.com/api.xro/2.0/. Endpoints include Invoices, Contacts, Payments, and BankTransactions. Connections are tenant-specific—multi-tenant apps must handle organization switching. Rate limits: 60 calls per minute per organization. ## PostgreSQL Best Practices Use connection pooling (PgBouncer) for web applications. Index foreign keys and frequently queried columns. Avoid N+1 queries—use JOINs or batch loading. For large tables, consider partitioning by date. Always use parameterized queries to prevent SQL injection. ## Redis Caching Patterns Use Redis for session storage, rate limiting, and cache-aside patterns. Set TTLs on cached data to prevent stale reads. Consider Redis Cluster for high availability. Monitor memory usage—Redis holds everything in RAM. ## HubSpot CRM Integration HubSpot offers a REST API and webhooks for real-time sync. Authentication uses private apps (access token) or OAuth for public apps. The CRM API covers contacts, companies, deals, and tickets. Use the Search API for complex queries. Webhook subscriptions require a valid endpoint that responds to verification challenges. ## Xero Accounting Integration Xero uses OAuth 2.0. The API base is https://api.xero.com/api.xro/2.0/. Endpoints include Invoices, Contacts, Payments, and BankTransactions. Connections are tenant-specific—multi-tenant apps must handle organization switching. Rate limits: 60 calls per minute per organization. ## PostgreSQL Best Practices Use connection pooling (PgBouncer) for web applications. Index foreign keys and frequently queried columns. Avoid N+1 queries—use JOINs or batch loading. For large tables, consider partitioning by date. Always use parameterized queries to prevent SQL injection. ## Redis Caching Patterns Use Redis for session storage, rate limiting, and cache-aside patterns. Set TTLs on cached data to prevent stale reads. Consider Redis Cluster for high availability. Monitor memory usage—Redis holds everything in RAM. ## HubSpot CRM Integration HubSpot offers a REST API and webhooks for real-time sync. Authentication uses private apps (access token) or OAuth for public apps. The CRM API covers contacts, companies, deals, and tickets. Use the Search API for complex queries. Webhook subscriptions require a valid endpoint that responds to verification challenges. ## Xero Accounting Integration Xero uses OAuth 2.0. The API base is https://api.xero.com/api.xro/2.0/. Endpoints include Invoices, Contacts, Payments, and BankTransactions. Connections are tenant-specific—multi-tenant apps must handle organization switching. Rate limits: 60 calls per minute per organization. ## PostgreSQL Best Practices Use connection pooling (PgBouncer) for web applications. Index foreign keys and frequently queried columns. Avoid N+1 queries—use JOINs or batch loading. For large tables, consider partitioning by date. Always use parameterized queries to prevent SQL injection. ## Redis Caching Patterns Use Redis for session storage, rate limiting, and cache-aside patterns. Set TTLs on cached data to prevent stale reads. Consider Redis Cluster for high availability. Monitor memory usage—Redis holds everything in RAM. ## HubSpot CRM Integration HubSpot offers a REST API and webhooks for real-time sync. Authentication uses private apps (access token) or OAuth for public apps. The CRM API covers contacts, companies, deals, and tickets. Use the Search API for complex queries. Webhook subscriptions require a valid endpoint that responds to verification challenges. ## Xero Accounting Integration Xero uses OAuth 2.0. The API base is https://api.xero.com/api.xro/2.0/. Endpoints include Invoices, Contacts, Payments, and BankTransactions. Connections are tenant-specific—multi-tenant apps must handle organization switching. Rate limits: 60 calls per minute per organization. ## PostgreSQL Best Practices Use connection pooling (PgBouncer) for web applications. Index foreign keys and frequently queried columns. Avoid N+1 queries—use JOINs or batch loading. For large tables, consider partitioning by date. Always use parameterized queries to prevent SQL injection. ## Redis Caching Patterns Use Redis for session storage, rate limiting, and cache-aside patterns. Set TTLs on cached data to prevent stale reads. Consider Redis Cluster for high availability. Monitor memory usage—Redis holds everything in RAM. ## HubSpot CRM Integration HubSpot offers a REST API and webhooks for real-time sync. Authentication uses private apps (access token) or OAuth for public apps. The CRM API covers contacts, companies, deals, and tickets. Use the Search API for complex queries. Webhook subscriptions require a valid endpoint that responds to verification challenges. ## Xero Accounting Integration Xero uses OAuth 2.0. The API base is https://api.xero.com/api.xro/2.0/. Endpoints include Invoices, Contacts, Payments, and BankTransactions. Connections are tenant-specific—multi-tenant apps must handle organization switching. Rate limits: 60 calls per minute per organization. ## PostgreSQL Best Practices Use connection pooling (PgBouncer) for web applications. Index foreign keys and frequently queried columns. Avoid N+1 queries—use JOINs or batch loading. For large tables, consider partitioning by date. Always use parameterized queries to prevent SQL injection. ## Redis Caching Patterns Use Redis for session storage, rate limiting, and cache-aside patterns. Set TTLs on cached data to prevent stale reads. Consider Redis Cluster for high availability. Monitor memory usage—Redis holds everything in RAM. ## HubSpot CRM Integration HubSpot offers a REST API and webhooks for real-time sync. Authentication uses private apps (access token) or OAuth for public apps. The CRM API covers contacts, companies, deals, and tickets. Use the Search API for complex queries. Webhook subscriptions require a valid endpoint that responds to verification challenges. ## Xero Accounting Integration Xero uses OAuth 2.0. The API base is https://api.xero.com/api.xro/2.0/. Endpoints include Invoices, Contacts, Payments, and BankTransactions. Connections are tenant-specific—multi-tenant apps must handle organization switching. Rate limits: 60 calls per minute per organization. ## PostgreSQL Best Practices Use connection pooling (PgBouncer) for web applications. Index foreign keys and frequently queried columns. Avoid N+1 queries—use JOINs or batch loading. For large tables, consider partitioning by date. Always use parameterized queries to prevent SQL injection. ## Redis Caching Patterns Use Redis for session storage, rate limiting, and cache-aside patterns. Set TTLs on cached data to prevent stale reads. Consider Redis Cluster for high availability. Monitor memory usage—Redis holds everything in RAM. ## HubSpot CRM Integration HubSpot offers a REST API and webhooks for real-time sync. Authentication uses private apps (access token) or OAuth for public apps. The CRM API covers contacts, companies, deals, and tickets. Use the Search API for complex queries. Webhook subscriptions require a valid endpoint that responds to verification challenges. ## Xero Accounting Integration Xero uses OAuth 2.0. The API base is https://api.xero.com/api.xro/2.0/. Endpoints include Invoices, Contacts, Payments, and BankTransactions. Connections are tenant-specific—multi-tenant apps must handle organization switching. Rate limits: 60 calls per minute per organization. ## PostgreSQL Best Practices Use connection pooling (PgBouncer) for web applications. Index foreign keys and frequently queried columns. Avoid N+1 queries—use JOINs or batch loading. For large tables, consider partitioning by date. Always use parameterized queries to prevent SQL injection. ## Redis Caching Patterns Use Redis for session storage, rate limiting, and cache-aside patterns. Set TTLs on cached data to prevent stale reads. Consider Redis Cluster for high availability. Monitor memory usage—Redis holds everything in RAM. ## HubSpot CRM Integration HubSpot offers a REST API and webhooks for real-time sync. Authentication uses private apps (access token) or OAuth for public apps. The CRM API covers contacts, companies, deals, and tickets. Use the Search API for complex queries. Webhook subscriptions require a valid endpoint that responds to verification challenges. ## Xero Accounting Integration Xero uses OAuth 2.0. The API base is https://api.xero.com/api.xro/2.0/. Endpoints include Invoices, Contacts, Payments, and BankTransactions. Connections are tenant-specific—multi-tenant apps must handle organization switching. Rate limits: 60 calls per minute per organization. ## PostgreSQL Best Practices Use connection pooling (PgBouncer) for web applications. Index foreign keys and frequently queried columns. Avoid N+1 queries—use JOINs or batch loading. For large tables, consider partitioning by date. Always use parameterized queries to prevent SQL injection. ## Redis Caching Patterns Use Redis for session storage, rate limiting, and cache-aside patterns. Set TTLs on cached data to prevent stale reads. Consider Redis Cluster for high availability. Monitor memory usage—Redis holds everything in RAM. ## HubSpot CRM Integration HubSpot offers a REST API and webhooks for real-time sync. Authentication uses private apps (access token) or OAuth for public apps. The CRM API covers contacts, companies, deals, and tickets. Use the Search API for complex queries. Webhook subscriptions require a valid endpoint that responds to verification challenges. ## Xero Accounting Integration Xero uses OAuth 2.0. The API base is https://api.xero.com/api.xro/2.0/. Endpoints include Invoices, Contacts, Payments, and BankTransactions. Connections are tenant-specific—multi-tenant apps must handle organization switching. Rate limits: 60 calls per minute per organization. ## PostgreSQL Best Practices Use connection pooling (PgBouncer) for web applications. Index foreign keys and frequently queried columns. Avoid N+1 queries—use JOINs or batch loading. For large tables, consider partitioning by date. Always use parameterized queries to prevent SQL injection. ## Redis Caching Patterns Use Redis for session storage, rate limiting, and cache-aside patterns. Set TTLs on cached data to prevent stale reads. Consider Redis Cluster for high availability. Monitor memory usage—Redis holds everything in RAM. ## HubSpot CRM Integration HubSpot offers a REST API and webhooks for real-time sync. Authentication uses private apps (access token) or OAuth for public apps. The CRM API covers contacts, companies, deals, and tickets. Use the Search API for complex queries. Webhook subscriptions require a valid endpoint that responds to verification challenges. ## Xero Accounting Integration Xero uses OAuth 2.0. The API base is https://api.xero.com/api.xro/2.0/. Endpoints include Invoices, Contacts, Payments, and BankTransactions. Connections are tenant-specific—multi-tenant apps must handle organization switching. Rate limits: 60 calls per minute per organization. ## PostgreSQL Best Practices Use connection pooling (PgBouncer) for web applications. Index foreign keys and frequently queried columns. Avoid N+1 queries—use JOINs or batch loading. For large tables, consider partitioning by date. Always use parameterized queries to prevent SQL injection. ## Redis Caching Patterns Use Redis for session storage, rate limiting, and cache-aside patterns. Set TTLs on cached data to prevent stale reads. Consider Redis Cluster for high availability. Monitor memory usage—Redis holds everything in RAM. ## HubSpot CRM Integration HubSpot offers a REST API and webhooks for real-time sync. Authentication uses private apps (access token) or OAuth for public apps. The CRM API covers contacts, companies, deals, and tickets. Use the Search API for complex queries. Webhook subscriptions require a valid endpoint that responds to verification challenges. ## Xero Accounting Integration Xero uses OAuth 2.0. The API base is https://api.xero.com/api.xro/2.0/. Endpoints include Invoices, Contacts, Payments, and BankTransactions. Connections are tenant-specific—multi-tenant apps must handle organization switching. Rate limits: 60 calls per minute per organization. ## PostgreSQL Best Practices Use connection pooling (PgBouncer) for web applications. Index foreign keys and frequently queried columns. Avoid N+1 queries—use JOINs or batch loading. For large tables, consider partitioning by date. Always use parameterized queries to prevent SQL injection. ## Redis Caching Patterns Use Redis for session storage, rate limiting, and cache-aside patterns. Set TTLs on cached data to prevent stale reads. Consider Redis Cluster for high availability. Monitor memory usage—Redis holds everything in RAM. ## HubSpot CRM Integration HubSpot offers a REST API and webhooks for real-time sync. Authentication uses private apps (access token) or OAuth for public apps. The CRM API covers contacts, companies, deals, and tickets. Use the Search API for complex queries. Webhook subscriptions require a valid endpoint that responds to verification challenges. ## Xero Accounting Integration Xero uses OAuth 2.0. The API base is https://api.xero.com/api.xro/2.0/. Endpoints include Invoices, Contacts, Payments, and BankTransactions. Connections are tenant-specific—multi-tenant apps must handle organization switching. Rate limits: 60 calls per minute per organization. ## PostgreSQL Best Practices Use connection pooling (PgBouncer) for web applications. Index foreign keys and frequently queried columns. Avoid N+1 queries—use JOINs or batch loading. For large tables, consider partitioning by date. Always use parameterized queries to prevent SQL injection. ## Redis Caching Patterns Use Redis for session storage, rate limiting, and cache-aside patterns. Set TTLs on cached data to prevent stale reads. Consider Redis Cluster for high availability. Monitor memory usage—Redis holds everything in RAM. ## HubSpot CRM Integration HubSpot offers a REST API and webhooks for real-time sync. Authentication uses private apps (access token) or OAuth for public apps. The CRM API covers contacts, companies, deals, and tickets. Use the Search API for complex queries. Webhook subscriptions require a valid endpoint that responds to verification challenges. ## Xero Accounting Integration Xero uses OAuth 2.0. The API base is https://api.xero.com/api.xro/2.0/. Endpoints include Invoices, Contacts, Payments, and BankTransactions. Connections are tenant-specific—multi-tenant apps must handle organization switching. Rate limits: 60 calls per minute per organization. ## PostgreSQL Best Practices Use connection pooling (PgBouncer) for web applications. Index foreign keys and frequently queried columns. Avoid N+1 queries—use JOINs or batch loading. For large tables, consider partitioning by date. Always use parameterized queries to prevent SQL injection. ## Redis Caching Patterns Use Redis for session storage, rate limiting, and cache-aside patterns. Set TTLs on cached data to prevent stale reads. Consider Redis Cluster for high availability. Monitor memory usage—Redis holds everything in RAM. ## HubSpot CRM Integration HubSpot offers a REST API and webhooks for real-time sync. Authentication uses private apps (access token) or OAuth for public apps. The CRM API covers contacts, companies, deals, and tickets. Use the Search API for complex queries. Webhook subscriptions require a valid endpoint that responds to verification challenges. ## Xero Accounting Integration Xero uses OAuth 2.0. The API base is https://api.xero.com/api.xro/2.0/. Endpoints include Invoices, Contacts, Payments, and BankTransactions. Connections are tenant-specific—multi-tenant apps must handle organization switching. Rate limits: 60 calls per minute per organization. ## PostgreSQL Best Practices Use connection pooling (PgBouncer) for web applications. Index foreign keys and frequently queried columns. Avoid N+1 queries—use JOINs or batch loading. For large tables, consider partitioning by date. Always use parameterized queries to prevent SQL injection. ## Redis Caching Patterns Use Redis for session storage, rate limiting, and cache-aside patterns. Set TTLs on cached data to prevent stale reads. Consider Redis Cluster for high availability. Monitor memory usage—Redis holds everything in RAM. ## HubSpot CRM Integration HubSpot offers a REST API and webhooks for real-time sync. Authentication uses private apps (access token) or OAuth for public apps. The CRM API covers contacts, companies, deals, and tickets. Use the Search API for complex queries. Webhook subscriptions require a valid endpoint that responds to verification challenges. ## Xero Accounting Integration Xero uses OAuth 2.0. The API base is https://api.xero.com/api.xro/2.0/. Endpoints include Invoices, Contacts, Payments, and BankTransactions. Connections are tenant-specific—multi-tenant apps must handle organization switching. Rate limits: 60 calls per minute per organization. ## PostgreSQL Best Practices Use connection pooling (PgBouncer) for web applications. Index foreign keys and frequently queried columns. Avoid N+1 queries—use JOINs or batch loading. For large tables, consider partitioning by date. Always use parameterized queries to prevent SQL injection. ## Redis Caching Patterns Use Redis for session storage, rate limiting, and cache-aside patterns. Set TTLs on cached data to prevent stale reads. Consider Redis Cluster for high availability. Monitor memory usage—Redis holds everything in RAM. ## HubSpot CRM Integration HubSpot offers a REST API and webhooks for real-time sync. Authentication uses private apps (access token) or OAuth for public apps. The CRM API covers contacts, companies, deals, and tickets. Use the Search API for complex queries. Webhook subscriptions require a valid endpoint that responds to verification challenges. ## Xero Accounting Integration Xero uses OAuth 2.0. The API base is https://api.xero.com/api.xro/2.0/. Endpoints include Invoices, Contacts, Payments, and BankTransactions. Connections are tenant-specific—multi-tenant apps must handle organization switching. Rate limits: 60 calls per minute per organization. ## PostgreSQL Best Practices Use connection pooling (PgBouncer) for web applications. Index foreign keys and frequently queried columns. Avoid N+1 queries—use JOINs or batch loading. For large tables, consider partitioning by date. Always use parameterized queries to prevent SQL injection. ## Redis Caching Patterns Use Redis for session storage, rate limiting, and cache-aside patterns. Set TTLs on cached data to prevent stale reads. Consider Redis Cluster for high availability. Monitor memory usage—Redis holds everything in RAM. ## HubSpot CRM Integration HubSpot offers a REST API and webhooks for real-time sync. Authentication uses private apps (access token) or OAuth for public apps. The CRM API covers contacts, companies, deals, and tickets. Use the Search API for complex queries. Webhook subscriptions require a valid endpoint that responds to verification challenges. ## Xero Accounting Integration Xero uses OAuth 2.0. The API base is https://api.xero.com/api.xro/2.0/. Endpoints include Invoices, Contacts, Payments, and BankTransactions. Connections are tenant-specific—multi-tenant apps must handle organization switching. Rate limits: 60 calls per minute per organization. ## PostgreSQL Best Practices Use connection pooling (PgBouncer) for web applications. Index foreign keys and frequently queried columns. Avoid N+1 queries—use JOINs or batch loading. For large tables, consider partitioning by date. Always use parameterized queries to prevent SQL injection. ## Redis Caching Patterns Use Redis for session storage, rate limiting, and cache-aside patterns. Set TTLs on cached data to prevent stale reads. Consider Redis Cluster for high availability. Monitor memory usage—Redis holds everything in RAM. ## HubSpot CRM Integration HubSpot offers a REST API and webhooks for real-time sync. Authentication uses private apps (access token) or OAuth for public apps. The CRM API covers contacts, companies, deals, and tickets. Use the Search API for complex queries. Webhook subscriptions require a valid endpoint that responds to verification challenges. ## Xero Accounting Integration Xero uses OAuth 2.0. The API base is https://api.xero.com/api.xro/2.0/. Endpoints include Invoices, Contacts, Payments, and BankTransactions. Connections are tenant-specific—multi-tenant apps must handle organization switching. Rate limits: 60 calls per minute per organization. ## PostgreSQL Best Practices Use connection pooling (PgBouncer) for web applications. Index foreign keys and frequently queried columns. Avoid N+1 queries—use JOINs or batch loading. For large tables, consider partitioning by date. Always use parameterized queries to prevent SQL injection. ## Redis Caching Patterns Use Redis for session storage, rate limiting, and cache-aside patterns. Set TTLs on cached data to prevent stale reads. Consider Redis Cluster for high availability. Monitor memory usage—Redis holds everything in RAM. ## HubSpot CRM Integration HubSpot offers a REST API and webhooks for real-time sync. Authentication uses private apps (access token) or OAuth for public apps. The CRM API covers contacts, companies, deals, and tickets. Use the Search API for complex queries. Webhook subscriptions require a valid endpoint that responds to verification challenges. ## Xero Accounting Integration Xero uses OAuth 2.0. The API base is https://api.xero.com/api.xro/2.0/. Endpoints include Invoices, Contacts, Payments, and BankTransactions. Connections are tenant-specific—multi-tenant apps must handle organization switching. Rate limits: 60 calls per minute per organization. ## PostgreSQL Best Practices Use connection pooling (PgBouncer) for web applications. Index foreign keys and frequently queried columns. Avoid N+1 queries—use JOINs or batch loading. For large tables, consider partitioning by date. Always use parameterized queries to prevent SQL injection. ## Redis Caching Patterns Use Redis for session storage, rate limiting, and cache-aside patterns. Set TTLs on cached data to prevent stale reads. Consider Redis Cluster for high availability. Monitor memory usage—Redis holds everything in RAM. ## HubSpot CRM Integration HubSpot offers a REST API and webhooks for real-time sync. Authentication uses private apps (access token) or OAuth for public apps. The CRM API covers contacts, companies, deals, and tickets. Use the Search API for complex queries. Webhook subscriptions require a valid endpoint that responds to verification challenges. ## Xero Accounting Integration Xero uses OAuth 2.0. The API base is https://api.xero.com/api.xro/2.0/. Endpoints include Invoices, Contacts, Payments, and BankTransactions. Connections are tenant-specific—multi-tenant apps must handle organization switching. Rate limits: 60 calls per minute per organization. ## PostgreSQL Best Practices Use connection pooling (PgBouncer) for web applications. Index foreign keys and frequently queried columns. Avoid N+1 queries—use JOINs or batch loading. For large tables, consider partitioning by date. Always use parameterized queries to prevent SQL injection. ## Redis Caching Patterns Use Redis for session storage, rate limiting, and cache-aside patterns. Set TTLs on cached data to prevent stale reads. Consider Redis Cluster for high availability. Monitor memory usage—Redis holds everything in RAM. ## HubSpot CRM Integration HubSpot offers a REST API and webhooks for real-time sync. Authentication uses private apps (access token) or OAuth for public apps. The CRM API covers contacts, companies, deals, and tickets. Use the Search API for complex queries. Webhook subscriptions require a valid endpoint that responds to verification challenges. ## Xero Accounting Integration Xero uses OAuth 2.0. The API base is https://api.xero.com/api.xro/2.0/. Endpoints include Invoices, Contacts, Payments, and BankTransactions. Connections are tenant-specific—multi-tenant apps must handle organization switching. Rate limits: 60 calls per minute per organization. ## PostgreSQL Best Practices Use connection pooling (PgBouncer) for web applications. Index foreign keys and frequently queried columns. Avoid N+1 queries—use JOINs or batch loading. For large tables, consider partitioning by date. Always use parameterized queries to prevent SQL injection. ## Redis Caching Patterns Use Redis for session storage, rate limiting, and cache-aside patterns. Set TTLs on cached data to prevent stale reads. Consider Redis Cluster for high availability. Monitor memory usage—Redis holds everything in RAM. ## HubSpot CRM Integration HubSpot offers a REST API and webhooks for real-time sync. Authentication uses private apps (access token) or OAuth for public apps. The CRM API covers contacts, companies, deals, and tickets. Use the Search API for complex queries. Webhook subscriptions require a valid endpoint that responds to verification challenges. ## Xero Accounting Integration Xero uses OAuth 2.0. The API base is https://api.xero.com/api.xro/2.0/. Endpoints include Invoices, Contacts, Payments, and BankTransactions. Connections are tenant-specific—multi-tenant apps must handle organization switching. Rate limits: 60 calls per minute per organization. ## PostgreSQL Best Practices Use connection pooling (PgBouncer) for web applications. Index foreign keys and frequently queried columns. Avoid N+1 queries—use JOINs or batch loading. For large tables, consider partitioning by date. Always use parameterized queries to prevent SQL injection. ## Redis Caching Patterns Use Redis for session storage, rate limiting, and cache-aside patterns. Set TTLs on cached data to prevent stale reads. Consider Redis Cluster for high availability. Monitor memory usage—Redis holds everything in RAM. ## HubSpot CRM Integration HubSpot offers a REST API and webhooks for real-time sync. Authentication uses private apps (access token) or OAuth for public apps. The CRM API covers contacts, companies, deals, and tickets. Use the Search API for complex queries. Webhook subscriptions require a valid endpoint that responds to verification challenges. ## Xero Accounting Integration Xero uses OAuth 2.0. The API base is https://api.xero.com/api.xro/2.0/. Endpoints include Invoices, Contacts, Payments, and BankTransactions. Connections are tenant-specific—multi-tenant apps must handle organization switching. Rate limits: 60 calls per minute per organization. ## PostgreSQL Best Practices Use connection pooling (PgBouncer) for web applications. Index foreign keys and frequently queried columns. Avoid N+1 queries—use JOINs or batch loading. For large tables, consider partitioning by date. Always use parameterized queries to prevent SQL injection. ## Redis Caching Patterns Use Redis for session storage, rate limiting, and cache-aside patterns. Set TTLs on cached data to prevent stale reads. Consider Redis Cluster for high availability. Monitor memory usage—Redis holds everything in RAM. ## HubSpot CRM Integration HubSpot offers a REST API and webhooks for real-time sync. Authentication uses private apps (access token) or OAuth for public apps. The CRM API covers contacts, companies, deals, and tickets. Use the Search API for complex queries. Webhook subscriptions require a valid endpoint that responds to verification challenges. ## Xero Accounting Integration Xero uses OAuth 2.0. The API base is https://api.xero.com/api.xro/2.0/. Endpoints include Invoices, Contacts, Payments, and BankTransactions. Connections are tenant-specific—multi-tenant apps must handle organization switching. Rate limits: 60 calls per minute per organization. ## PostgreSQL Best Practices Use connection pooling (PgBouncer) for web applications. Index foreign keys and frequently queried columns. Avoid N+1 queries—use JOINs or batch loading. For large tables, consider partitioning by date. Always use parameterized queries to prevent SQL injection. ## Redis Caching Patterns Use Redis for session storage, rate limiting, and cache-aside patterns. Set TTLs on cached data to prevent stale reads. Consider Redis Cluster for high availability. Monitor memory usage—Redis holds everything in RAM. ## HubSpot CRM Integration HubSpot offers a REST API and webhooks for real-time sync. Authentication uses private apps (access token) or OAuth for public apps. The CRM API covers contacts, companies, deals, and tickets. Use the Search API for complex queries. Webhook subscriptions require a valid endpoint that responds to verification challenges. ## Xero Accounting Integration Xero uses OAuth 2.0. The API base is https://api.xero.com/api.xro/2.0/. Endpoints include Invoices, Contacts, Payments, and BankTransactions. Connections are tenant-specific—multi-tenant apps must handle organization switching. Rate limits: 60 calls per minute per organization. ## PostgreSQL Best Practices Use connection pooling (PgBouncer) for web applications. Index foreign keys and frequently queried columns. Avoid N+1 queries—use JOINs or batch loading. For large tables, consider partitioning by date. Always use parameterized queries to prevent SQL injection. ## Redis Caching Patterns Use Redis for session storage, rate limiting, and cache-aside patterns. Set TTLs on cached data to prevent stale reads. Consider Redis Cluster for high availability. Monitor memory usage—Redis holds everything in RAM. ## HubSpot CRM Integration HubSpot offers a REST API and webhooks for real-time sync. Authentication uses private apps (access token) or OAuth for public apps. The CRM API covers contacts, companies, deals, and tickets. Use the Search API for complex queries. Webhook subscriptions require a valid endpoint that responds to verification challenges. ## Xero Accounting Integration Xero uses OAuth 2.0. The API base is https://api.xero.com/api.xro/2.0/. Endpoints include Invoices, Contacts, Payments, and BankTransactions. Connections are tenant-specific—multi-tenant apps must handle organization switching. Rate limits: 60 calls per minute per organization. ## PostgreSQL Best Practices Use connection pooling (PgBouncer) for web applications. Index foreign keys and frequently queried columns. Avoid N+1 queries—use JOINs or batch loading. For large tables, consider partitioning by date. Always use parameterized queries to prevent SQL injection. ## Redis Caching Patterns Use Redis for session storage, rate limiting, and cache-aside patterns. Set TTLs on cached data to prevent stale reads. Consider Redis Cluster for high availability. Monitor memory usage—Redis holds everything in RAM. ## HubSpot CRM Integration HubSpot offers a REST API and webhooks for real-time sync. Authentication uses private apps (access token) or OAuth for public apps. The CRM API covers contacts, companies, deals, and tickets. Use the Search API for complex queries. Webhook subscriptions require a valid endpoint that responds to verification challenges. ## Xero Accounting Integration Xero uses OAuth 2.0. The API base is https://api.xero.com/api.xro/2.0/. Endpoints include Invoices, Contacts, Payments, and BankTransactions. Connections are tenant-specific—multi-tenant apps must handle organization switching. Rate limits: 60 calls per minute per organization. ## PostgreSQL Best Practices Use connection pooling (PgBouncer) for web applications. Index foreign keys and frequently queried columns. Avoid N+1 queries—use JOINs or batch loading. For large tables, consider partitioning by date. Always use parameterized queries to prevent SQL injection. ## Redis Caching Patterns Use Redis for session storage, rate limiting, and cache-aside patterns. Set TTLs on cached data to prevent stale reads. Consider Redis Cluster for high availability. Monitor memory usage—Redis holds everything in RAM. ## HubSpot CRM Integration HubSpot offers a REST API and webhooks for real-time sync. Authentication uses private apps (access token) or OAuth for public apps. The CRM API covers contacts, companies, deals, and tickets. Use the Search API for complex queries. Webhook subscriptions require a valid endpoint that responds to verification challenges. ## Xero Accounting Integration Xero uses OAuth 2.0. The API base is https://api.xero.com/api.xro/2.0/. Endpoints include Invoices, Contacts, Payments, and BankTransactions. Connections are tenant-specific—multi-tenant apps must handle organization switching. Rate limits: 60 calls per minute per organization. ## PostgreSQL Best Practices Use connection pooling (PgBouncer) for web applications. Index foreign keys and frequently queried columns. Avoid N+1 queries—use JOINs or batch loading. For large tables, consider partitioning by date. Always use parameterized queries to prevent SQL injection. ## Redis Caching Patterns Use Redis for session storage, rate limiting, and cache-aside patterns. Set TTLs on cached data to prevent stale reads. Consider Redis Cluster for high availability. Monitor memory usage—Redis holds everything in RAM. ## HubSpot CRM Integration HubSpot offers a REST API and webhooks for real-time sync. Authentication uses private apps (access token) or OAuth for public apps. The CRM API covers contacts, companies, deals, and tickets. Use the Search API for complex queries. Webhook subscriptions require a valid endpoint that responds to verification challenges. ## Xero Accounting Integration Xero uses OAuth 2.0. The API base is https://api.xero.com/api.xro/2.0/. Endpoints include Invoices, Contacts, Payments, and BankTransactions. Connections are tenant-specific—multi-tenant apps must handle organization switching. Rate limits: 60 calls per minute per organization. ## PostgreSQL Best Practices Use connection pooling (PgBouncer) for web applications. Index foreign keys and frequently queried columns. Avoid N+1 queries—use JOINs or batch loading. For large tables, consider partitioning by date. Always use parameterized queries to prevent SQL injection. ## Redis Caching Patterns Use Redis for session storage, rate limiting, and cache-aside patterns. Set TTLs on cached data to prevent stale reads. Consider Redis Cluster for high availability. Monitor memory usage—Redis holds everything in RAM. ## HubSpot CRM Integration HubSpot offers a REST API and webhooks for real-time sync. Authentication uses private apps (access token) or OAuth for public apps. The CRM API covers contacts, companies, deals, and tickets. Use the Search API for complex queries. Webhook subscriptions require a valid endpoint that responds to verification challenges. ## Xero Accounting Integration Xero uses OAuth 2.0. The API base is https://api.xero.com/api.xro/2.0/. Endpoints include Invoices, Contacts, Payments, and BankTransactions. Connections are tenant-specific—multi-tenant apps must handle organization switching. Rate limits: 60 calls per minute per organization. ## PostgreSQL Best Practices Use connection pooling (PgBouncer) for web applications. Index foreign keys and frequently queried columns. Avoid N+1 queries—use JOINs or batch loading. For large tables, consider partitioning by date. Always use parameterized queries to prevent SQL injection. ## Redis Caching Patterns Use Redis for session storage, rate limiting, and cache-aside patterns. Set TTLs on cached data to prevent stale reads. Consider Redis Cluster for high availability. Monitor memory usage—Redis holds everything in RAM. ## HubSpot CRM Integration HubSpot offers a REST API and webhooks for real-time sync. Authentication uses private apps (access token) or OAuth for public apps. The CRM API covers contacts, companies, deals, and tickets. Use the Search API for complex queries. Webhook subscriptions require a valid endpoint that responds to verification challenges. ## Xero Accounting Integration Xero uses OAuth 2.0. The API base is https://api.xero.com/api.xro/2.0/. Endpoints include Invoices, Contacts, Payments, and BankTransactions. Connections are tenant-specific—multi-tenant apps must handle organization switching. Rate limits: 60 calls per minute per organization. ## PostgreSQL Best Practices Use connection pooling (PgBouncer) for web applications. Index foreign keys and frequently queried columns. Avoid N+1 queries—use JOINs or batch loading. For large tables, consider partitioning by date. Always use parameterized queries to prevent SQL injection. ## Redis Caching Patterns Use Redis for session storage, rate limiting, and cache-aside patterns. Set TTLs on cached data to prevent stale reads. Consider Redis Cluster for high availability. Monitor memory usage—Redis holds everything in RAM. ## HubSpot CRM Integration HubSpot offers a REST API and webhooks for real-time sync. Authentication uses private apps (access token) or OAuth for public apps. The CRM API covers contacts, companies, deals, and tickets. Use the Search API for complex queries. Webhook subscriptions require a valid endpoint that responds to verification challenges. ## Xero Accounting Integration Xero uses OAuth 2.0. The API base is https://api.xero.com/api.xro/2.0/. Endpoints include Invoices, Contacts, Payments, and BankTransactions. Connections are tenant-specific—multi-tenant apps must handle organization switching. Rate limits: 60 calls per minute per organization. ## PostgreSQL Best Practices Use connection pooling (PgBouncer) for web applications. Index foreign keys and frequently queried columns. Avoid N+1 queries—use JOINs or batch loading. For large tables, consider partitioning by date. Always use parameterized queries to prevent SQL injection. ## Redis Caching Patterns Use Redis for session storage, rate limiting, and cache-aside patterns. Set TTLs on cached data to prevent stale reads. Consider Redis Cluster for high availability. Monitor memory usage—Redis holds everything in RAM. ## HubSpot CRM Integration HubSpot offers a REST API and webhooks for real-time sync. Authentication uses private apps (access token) or OAuth for public apps. The CRM API covers contacts, companies, deals, and tickets. Use the Search API for complex queries. Webhook subscriptions require a valid endpoint that responds to verification challenges. ## Xero Accounting Integration Xero uses OAuth 2.0. The API base is https://api.xero.com/api.xro/2.0/. Endpoints include Invoices, Contacts, Payments, and BankTransactions. Connections are tenant-specific—multi-tenant apps must handle organization switching. Rate limits: 60 calls per minute per organization. ## PostgreSQL Best Practices Use connection pooling (PgBouncer) for web applications. Index foreign keys and frequently queried columns. Avoid N+1 queries—use JOINs or batch loading. For large tables, consider partitioning by date. Always use parameterized queries to prevent SQL injection. ## Redis Caching Patterns Use Redis for session storage, rate limiting, and cache-aside patterns. Set TTLs on cached data to prevent stale reads. Consider Redis Cluster for high availability. Monitor memory usage—Redis holds everything in RAM. ## HubSpot CRM Integration HubSpot offers a REST API and webhooks for real-time sync. Authentication uses private apps (access token) or OAuth for public apps. The CRM API covers contacts, companies, deals, and tickets. Use the Search API for complex queries. Webhook subscriptions require a valid endpoint that responds to verification challenges. ## Xero Accounting Integration Xero uses OAuth 2.0. The API base is https://api.xero.com/api.xro/2.0/. Endpoints include Invoices, Contacts, Payments, and BankTransactions. Connections are tenant-specific—multi-tenant apps must handle organization switching. Rate limits: 60 calls per minute per organization. ## PostgreSQL Best Practices Use connection pooling (PgBouncer) for web applications. Index foreign keys and frequently queried columns. Avoid N+1 queries—use JOINs or batch loading. For large tables, consider partitioning by date. Always use parameterized queries to prevent SQL injection. ## Redis Caching Patterns Use Redis for session storage, rate limiting, and cache-aside patterns. Set TTLs on cached data to prevent stale reads. Consider Redis Cluster for high availability. Monitor memory usage—Redis holds everything in RAM. ## HubSpot CRM Integration HubSpot offers a REST API and webhooks for real-time sync. Authentication uses private apps (access token) or OAuth for public apps. The CRM API covers contacts, companies, deals, and tickets. Use the Search API for complex queries. Webhook subscriptions require a valid endpoint that responds to verification challenges. ## Xero Accounting Integration Xero uses OAuth 2.0. The API base is https://api.xero.com/api.xro/2.0/. Endpoints include Invoices, Contacts, Payments, and BankTransactions. Connections are tenant-specific—multi-tenant apps must handle organization switching. Rate limits: 60 calls per minute per organization. ## PostgreSQL Best Practices Use connection pooling (PgBouncer) for web applications. Index foreign keys and frequently queried columns. Avoid N+1 queries—use JOINs or batch loading. For large tables, consider partitioning by date. Always use parameterized queries to prevent SQL injection. ## Redis Caching Patterns Use Redis for session storage, rate limiting, and cache-aside patterns. Set TTLs on cached data to prevent stale reads. Consider Redis Cluster for high availability. Monitor memory usage—Redis holds everything in RAM. ## HubSpot CRM Integration HubSpot offers a REST API and webhooks for real-time sync. Authentication uses private apps (access token) or OAuth for public apps. The CRM API covers contacts, companies, deals, and tickets. Use the Search API for complex queries. Webhook subscriptions require a valid endpoint that responds to verification challenges. ## Xero Accounting Integration Xero uses OAuth 2.0. The API base is https://api.xero.com/api.xro/2.0/. Endpoints include Invoices, Contacts, Payments, and BankTransactions. Connections are tenant-specific—multi-tenant apps must handle organization switching. Rate limits: 60 calls per minute per organization. ## PostgreSQL Best Practices Use connection pooling (PgBouncer) for web applications. Index foreign keys and frequently queried columns. Avoid N+1 queries—use JOINs or batch loading. For large tables, consider partitioning by date. Always use parameterized queries to prevent SQL injection. ## Redis Caching Patterns Use Redis for session storage, rate limiting, and cache-aside patterns. Set TTLs on cached data to prevent stale reads. Consider Redis Cluster for high availability. Monitor memory usage—Redis holds everything in RAM. ## HubSpot CRM Integration HubSpot offers a REST API and webhooks for real-time sync. Authentication uses private apps (access token) or OAuth for public apps. The CRM API covers contacts, companies, deals, and tickets. Use the Search API for complex queries. Webhook subscriptions require a valid endpoint that responds to verification challenges. ## Xero Accounting Integration Xero uses OAuth 2.0. The API base is https://api.xero.com/api.xro/2.0/. Endpoints include Invoices, Contacts, Payments, and BankTransactions. Connections are tenant-specific—multi-tenant apps must handle organization switching. Rate limits: 60 calls per minute per organization. ## PostgreSQL Best Practices Use connection pooling (PgBouncer) for web applications. Index foreign keys and frequently queried columns. Avoid N+1 queries—use JOINs or batch loading. For large tables, consider partitioning by date. Always use parameterized queries to prevent SQL injection. ## Redis Caching Patterns Use Redis for session storage, rate limiting, and cache-aside patterns. Set TTLs on cached data to prevent stale reads. Consider Redis Cluster for high availability. Monitor memory usage—Redis holds everything in RAM. ## HubSpot CRM Integration HubSpot offers a REST API and webhooks for real-time sync. Authentication uses private apps (access token) or OAuth for public apps. The CRM API covers contacts, companies, deals, and tickets. Use the Search API for complex queries. Webhook subscriptions require a valid endpoint that responds to verification challenges. ## Xero Accounting Integration Xero uses OAuth 2.0. The API base is https://api.xero.com/api.xro/2.0/. Endpoints include Invoices, Contacts, Payments, and BankTransactions. Connections are tenant-specific—multi-tenant apps must handle organization switching. Rate limits: 60 calls per minute per organization. ## PostgreSQL Best Practices Use connection pooling (PgBouncer) for web applications. Index foreign keys and frequently queried columns. Avoid N+1 queries—use JOINs or batch loading. For large tables, consider partitioning by date. Always use parameterized queries to prevent SQL injection. ## Redis Caching Patterns Use Redis for session storage, rate limiting, and cache-aside patterns. Set TTLs on cached data to prevent stale reads. Consider Redis Cluster for high availability. Monitor memory usage—Redis holds everything in RAM. ## HubSpot CRM Integration HubSpot offers a REST API and webhooks for real-time sync. Authentication uses private apps (access token) or OAuth for public apps. The CRM API covers contacts, companies, deals, and tickets. Use the Search API for complex queries. Webhook subscriptions require a valid endpoint that responds to verification challenges. ## Xero Accounting Integration Xero uses OAuth 2.0. The API base is https://api.xero.com/api.xro/2.0/. Endpoints include Invoices, Contacts, Payments, and BankTransactions. Connections are tenant-specific—multi-tenant apps must handle organization switching. Rate limits: 60 calls per minute per organization. ## PostgreSQL Best Practices Use connection pooling (PgBouncer) for web applications. Index foreign keys and frequently queried columns. Avoid N+1 queries—use JOINs or batch loading. For large tables, consider partitioning by date. Always use parameterized queries to prevent SQL injection. ## Redis Caching Patterns Use Redis for session storage, rate limiting, and cache-aside patterns. Set TTLs on cached data to prevent stale reads. Consider Redis Cluster for high availability. Monitor memory usage—Redis holds everything in RAM. ## HubSpot CRM Integration HubSpot offers a REST API and webhooks for real-time sync. Authentication uses private apps (access token) or OAuth for public apps. The CRM API covers contacts, companies, deals, and tickets. Use the Search API for complex queries. Webhook subscriptions require a valid endpoint that responds to verification challenges. ## Xero Accounting Integration Xero uses OAuth 2.0. The API base is https://api.xero.com/api.xro/2.0/. Endpoints include Invoices, Contacts, Payments, and BankTransactions. Connections are tenant-specific—multi-tenant apps must handle organization switching. Rate limits: 60 calls per minute per organization. ## PostgreSQL Best Practices Use connection pooling (PgBouncer) for web applications. Index foreign keys and frequently queried columns. Avoid N+1 queries—use JOINs or batch loading. For large tables, consider partitioning by date. Always use parameterized queries to prevent SQL injection. ## Redis Caching Patterns Use Redis for session storage, rate limiting, and cache-aside patterns. Set TTLs on cached data to prevent stale reads. Consider Redis Cluster for high availability. Monitor memory usage—Redis holds everything in RAM. ## HubSpot CRM Integration HubSpot offers a REST API and webhooks for real-time sync. Authentication uses private apps (access token) or OAuth for public apps. The CRM API covers contacts, companies, deals, and tickets. Use the Search API for complex queries. Webhook subscriptions require a valid endpoint that responds to verification challenges. ## Xero Accounting Integration Xero uses OAuth 2.0. The API base is https://api.xero.com/api.xro/2.0/. Endpoints include Invoices, Contacts, Payments, and BankTransactions. Connections are tenant-specific—multi-tenant apps must handle organization switching. Rate limits: 60 calls per minute per organization. ## PostgreSQL Best Practices Use connection pooling (PgBouncer) for web applications. Index foreign keys and frequently queried columns. Avoid N+1 queries—use JOINs or batch loading. For large tables, consider partitioning by date. Always use parameterized queries to prevent SQL injection. ## Redis Caching Patterns Use Redis for session storage, rate limiting, and cache-aside patterns. Set TTLs on cached data to prevent stale reads. Consider Redis Cluster for high availability. Monitor memory usage—Redis holds everything in RAM. ## HubSpot CRM Integration HubSpot offers a REST API and webhooks for real-time sync. Authentication uses private apps (access token) or OAuth for public apps. The CRM API covers contacts, companies, deals, and tickets. Use the Search API for complex queries. Webhook subscriptions require a valid endpoint that responds to verification challenges. ## Xero Accounting Integration Xero uses OAuth 2.0. The API base is https://api.xero.com/api.xro/2.0/. Endpoints include Invoices, Contacts, Payments, and BankTransactions. Connections are tenant-specific—multi-tenant apps must handle organization switching. Rate limits: 60 calls per minute per organization. ## PostgreSQL Best Practices Use connection pooling (PgBouncer) for web applications. Index foreign keys and frequently queried columns. Avoid N+1 queries—use JOINs or batch loading. For large tables, consider partitioning by date. Always use parameterized queries to prevent SQL injection. ## Redis Caching Patterns Use Redis for session storage, rate limiting, and cache-aside patterns. Set TTLs on cached data to prevent stale reads. Consider Redis Cluster for high availability. Monitor memory usage—Redis holds everything in RAM. ## HubSpot CRM Integration HubSpot offers a REST API and webhooks for real-time sync. Authentication uses private apps (access token) or OAuth for public apps. The CRM API covers contacts, companies, deals, and tickets. Use the Search API for complex queries. Webhook subscriptions require a valid endpoint that responds to verification challenges. ## Xero Accounting Integration Xero uses OAuth 2.0. The API base is https://api.xero.com/api.xro/2.0/. Endpoints include Invoices, Contacts, Payments, and BankTransactions. Connections are tenant-specific—multi-tenant apps must handle organization switching. Rate limits: 60 calls per minute per organization. ## PostgreSQL Best Practices Use connection pooling (PgBouncer) for web applications. Index foreign keys and frequently queried columns. Avoid N+1 queries—use JOINs or batch loading. For large tables, consider partitioning by date. Always use parameterized queries to prevent SQL injection. ## Redis Caching Patterns Use Redis for session storage, rate limiting, and cache-aside patterns. Set TTLs on cached data to prevent stale reads. Consider Redis Cluster for high availability. Monitor memory usage—Redis holds everything in RAM. ## HubSpot CRM Integration HubSpot offers a REST API and webhooks for real-time sync. Authentication uses private apps (access token) or OAuth for public apps. The CRM API covers contacts, companies, deals, and tickets. Use the Search API for complex queries. Webhook subscriptions require a valid endpoint that responds to verification challenges. ## Xero Accounting Integration Xero uses OAuth 2.0. The API base is https://api.xero.com/api.xro/2.0/. Endpoints include Invoices, Contacts, Payments, and BankTransactions. Connections are tenant-specific—multi-tenant apps must handle organization switching. Rate limits: 60 calls per minute per organization. ## PostgreSQL Best Practices Use connection pooling (PgBouncer) for web applications. Index foreign keys and frequently queried columns. Avoid N+1 queries—use JOINs or batch loading. For large tables, consider partitioning by date. Always use parameterized queries to prevent SQL injection. ## Redis Caching Patterns Use Redis for session storage, rate limiting, and cache-aside patterns. Set TTLs on cached data to prevent stale reads. Consider Redis Cluster for high availability. Monitor memory usage—Redis holds everything in RAM. ## HubSpot CRM Integration HubSpot offers a REST API and webhooks for real-time sync. Authentication uses private apps (access token) or OAuth for public apps. The CRM API covers contacts, companies, deals, and tickets. Use the Search API for complex queries. Webhook subscriptions require a valid endpoint that responds to verification challenges. ## Xero Accounting Integration Xero uses OAuth 2.0. The API base is https://api.xero.com/api.xro/2.0/. Endpoints include Invoices, Contacts, Payments, and BankTransactions. Connections are tenant-specific—multi-tenant apps must handle organization switching. Rate limits: 60 calls per minute per organization. ## PostgreSQL Best Practices Use connection pooling (PgBouncer) for web applications. Index foreign keys and frequently queried columns. Avoid N+1 queries—use JOINs or batch loading. For large tables, consider partitioning by date. Always use parameterized queries to prevent SQL injection. ## Redis Caching Patterns Use Redis for session storage, rate limiting, and cache-aside patterns. Set TTLs on cached data to prevent stale reads. Consider Redis Cluster for high availability. Monitor memory usage—Redis holds everything in RAM. ## HubSpot CRM Integration HubSpot offers a REST API and webhooks for real-time sync. Authentication uses private apps (access token) or OAuth for public apps. The CRM API covers contacts, companies, deals, and tickets. Use the Search API for complex queries. Webhook subscriptions require a valid endpoint that responds to verification challenges. ## Xero Accounting Integration Xero uses OAuth 2.0. The API base is https://api.xero.com/api.xro/2.0/. Endpoints include Invoices, Contacts, Payments, and BankTransactions. Connections are tenant-specific—multi-tenant apps must handle organization switching. Rate limits: 60 calls per minute per organization. ## PostgreSQL Best Practices Use connection pooling (PgBouncer) for web applications. Index foreign keys and frequently queried columns. Avoid N+1 queries—use JOINs or batch loading. For large tables, consider partitioning by date. Always use parameterized queries to prevent SQL injection. ## Redis Caching Patterns Use Redis for session storage, rate limiting, and cache-aside patterns. Set TTLs on cached data to prevent stale reads. Consider Redis Cluster for high availability. Monitor memory usage—Redis holds everything in RAM. ## HubSpot CRM Integration HubSpot offers a REST API and webhooks for real-time sync. Authentication uses private apps (access token) or OAuth for public apps. The CRM API covers contacts, companies, deals, and tickets. Use the Search API for complex queries. Webhook subscriptions require a valid endpoint that responds to verification challenges. ## Xero Accounting Integration Xero uses OAuth 2.0. The API base is https://api.xero.com/api.xro/2.0/. Endpoints include Invoices, Contacts, Payments, and BankTransactions. Connections are tenant-specific—multi-tenant apps must handle organization switching. Rate limits: 60 calls per minute per organization. ## PostgreSQL Best Practices Use connection pooling (PgBouncer) for web applications. Index foreign keys and frequently queried columns. Avoid N+1 queries—use JOINs or batch loading. For large tables, consider partitioning by date. Always use parameterized queries to prevent SQL injection. ## Redis Caching Patterns Use Redis for session storage, rate limiting, and cache-aside patterns. Set TTLs on cached data to prevent stale reads. Consider Redis Cluster for high availability. Monitor memory usage—Redis holds everything in RAM. ## HubSpot CRM Integration HubSpot offers a REST API and webhooks for real-time sync. Authentication uses private apps (access token) or OAuth for public apps. The CRM API covers contacts, companies, deals, and tickets. Use the Search API for complex queries. Webhook subscriptions require a valid endpoint that responds to verification challenges. ## Xero Accounting Integration Xero uses OAuth 2.0. The API base is https://api.xero.com/api.xro/2.0/. Endpoints include Invoices, Contacts, Payments, and BankTransactions. Connections are tenant-specific—multi-tenant apps must handle organization switching. Rate limits: 60 calls per minute per organization. ## PostgreSQL Best Practices Use connection pooling (PgBouncer) for web applications. Index foreign keys and frequently queried columns. Avoid N+1 queries—use JOINs or batch loading. For large tables, consider partitioning by date. Always use parameterized queries to prevent SQL injection. ## Redis Caching Patterns Use Redis for session storage, rate limiting, and cache-aside patterns. Set TTLs on cached data to prevent stale reads. Consider Redis Cluster for high availability. Monitor memory usage—Redis holds everything in RAM. ## HubSpot CRM Integration HubSpot offers a REST API and webhooks for real-time sync. Authentication uses private apps (access token) or OAuth for public apps. The CRM API covers contacts, companies, deals, and tickets. Use the Search API for complex queries. Webhook subscriptions require a valid endpoint that responds to verification challenges. ## Xero Accounting Integration Xero uses OAuth 2.0. The API base is https://api.xero.com/api.xro/2.0/. Endpoints include Invoices, Contacts, Payments, and BankTransactions. Connections are tenant-specific—multi-tenant apps must handle organization switching. Rate limits: 60 calls per minute per organization. ## PostgreSQL Best Practices Use connection pooling (PgBouncer) for web applications. Index foreign keys and frequently queried columns. Avoid N+1 queries—use JOINs or batch loading. For large tables, consider partitioning by date. Always use parameterized queries to prevent SQL injection. ## Redis Caching Patterns Use Redis for session storage, rate limiting, and cache-aside patterns. Set TTLs on cached data to prevent stale reads. Consider Redis Cluster for high availability. Monitor memory usage—Redis holds everything in RAM. ## HubSpot CRM Integration HubSpot offers a REST API and webhooks for real-time sync. Authentication uses private apps (access token) or OAuth for public apps. The CRM API covers contacts, companies, deals, and tickets. Use the Search API for complex queries. Webhook subscriptions require a valid endpoint that responds to verification challenges. ## Xero Accounting Integration Xero uses OAuth 2.0. The API base is https://api.xero.com/api.xro/2.0/. Endpoints include Invoices, Contacts, Payments, and BankTransactions. Connections are tenant-specific—multi-tenant apps must handle organization switching. Rate limits: 60 calls per minute per organization. ## PostgreSQL Best Practices Use connection pooling (PgBouncer) for web applications. Index foreign keys and frequently queried columns. Avoid N+1 queries—use JOINs or batch loading. For large tables, consider partitioning by date. Always use parameterized queries to prevent SQL injection. ## Redis Caching Patterns Use Redis for session storage, rate limiting, and cache-aside patterns. Set TTLs on cached data to prevent stale reads. Consider Redis Cluster for high availability. Monitor memory usage—Redis holds everything in RAM. ## HubSpot CRM Integration HubSpot offers a REST API and webhooks for real-time sync. Authentication uses private apps (access token) or OAuth for public apps. The CRM API covers contacts, companies, deals, and tickets. Use the Search API for complex queries. Webhook subscriptions require a valid endpoint that responds to verification challenges. ## Xero Accounting Integration Xero uses OAuth 2.0. The API base is https://api.xero.com/api.xro/2.0/. Endpoints include Invoices, Contacts, Payments, and BankTransactions. Connections are tenant-specific—multi-tenant apps must handle organization switching. Rate limits: 60 calls per minute per organization. ## PostgreSQL Best Practices Use connection pooling (PgBouncer) for web applications. Index foreign keys and frequently queried columns. Avoid N+1 queries—use JOINs or batch loading. For large tables, consider partitioning by date. Always use parameterized queries to prevent SQL injection. ## Redis Caching Patterns Use Redis for session storage, rate limiting, and cache-aside patterns. Set TTLs on cached data to prevent stale reads. Consider Redis Cluster for high availability. Monitor memory usage—Redis holds everything in RAM. ## HubSpot CRM Integration HubSpot offers a REST API and webhooks for real-time sync. Authentication uses private apps (access token) or OAuth for public apps. The CRM API covers contacts, companies, deals, and tickets. Use the Search API for complex queries. Webhook subscriptions require a valid endpoint that responds to verification challenges. ## Xero Accounting Integration Xero uses OAuth 2.0. The API base is https://api.xero.com/api.xro/2.0/. Endpoints include Invoices, Contacts, Payments, and BankTransactions. Connections are tenant-specific—multi-tenant apps must handle organization switching. Rate limits: 60 calls per minute per organization. ## PostgreSQL Best Practices Use connection pooling (PgBouncer) for web applications. Index foreign keys and frequently queried columns. Avoid N+1 queries—use JOINs or batch loading. For large tables, consider partitioning by date. Always use parameterized queries to prevent SQL injection. ## Redis Caching Patterns Use Redis for session storage, rate limiting, and cache-aside patterns. Set TTLs on cached data to prevent stale reads. Consider Redis Cluster for high availability. Monitor memory usage—Redis holds everything in RAM. ## HubSpot CRM Integration HubSpot offers a REST API and webhooks for real-time sync. Authentication uses private apps (access token) or OAuth for public apps. The CRM API covers contacts, companies, deals, and tickets. Use the Search API for complex queries. Webhook subscriptions require a valid endpoint that responds to verification challenges. ## Xero Accounting Integration Xero uses OAuth 2.0. The API base is https://api.xero.com/api.xro/2.0/. Endpoints include Invoices, Contacts, Payments, and BankTransactions. Connections are tenant-specific—multi-tenant apps must handle organization switching. Rate limits: 60 calls per minute per organization. ## PostgreSQL Best Practices Use connection pooling (PgBouncer) for web applications. Index foreign keys and frequently queried columns. Avoid N+1 queries—use JOINs or batch loading. For large tables, consider partitioning by date. Always use parameterized queries to prevent SQL injection. ## Redis Caching Patterns Use Redis for session storage, rate limiting, and cache-aside patterns. Set TTLs on cached data to prevent stale reads. Consider Redis Cluster for high availability. Monitor memory usage—Redis holds everything in RAM. ## HubSpot CRM Integration HubSpot offers a REST API and webhooks for real-time sync. Authentication uses private apps (access token) or OAuth for public apps. The CRM API covers contacts, companies, deals, and tickets. Use the Search API for complex queries. Webhook subscriptions require a valid endpoint that responds to verification challenges. ## Xero Accounting Integration Xero uses OAuth 2.0. The API base is https://api.xero.com/api.xro/2.0/. Endpoints include Invoices, Contacts, Payments, and BankTransactions. Connections are tenant-specific—multi-tenant apps must handle organization switching. Rate limits: 60 calls per minute per organization. ## PostgreSQL Best Practices Use connection pooling (PgBouncer) for web applications. Index foreign keys and frequently queried columns. Avoid N+1 queries—use JOINs or batch loading. For large tables, consider partitioning by date. Always use parameterized queries to prevent SQL injection. ## Redis Caching Patterns Use Redis for session storage, rate limiting, and cache-aside patterns. Set TTLs on cached data to prevent stale reads. Consider Redis Cluster for high availability. Monitor memory usage—Redis holds everything in RAM. ## HubSpot CRM Integration HubSpot offers a REST API and webhooks for real-time sync. Authentication uses private apps (access token) or OAuth for public apps. The CRM API covers contacts, companies, deals, and tickets. Use the Search API for complex queries. Webhook subscriptions require a valid endpoint that responds to verification challenges. ## Xero Accounting Integration Xero uses OAuth 2.0. The API base is https://api.xero.com/api.xro/2.0/. Endpoints include Invoices, Contacts, Payments, and BankTransactions. Connections are tenant-specific—multi-tenant apps must handle organization switching. Rate limits: 60 calls per minute per organization. ## PostgreSQL Best Practices Use connection pooling (PgBouncer) for web applications. Index foreign keys and frequently queried columns. Avoid N+1 queries—use JOINs or batch loading. For large tables, consider partitioning by date. Always use parameterized queries to prevent SQL injection. ## Redis Caching Patterns Use Redis for session storage, rate limiting, and cache-aside patterns. Set TTLs on cached data to prevent stale reads. Consider Redis Cluster for high availability. Monitor memory usage—Redis holds everything in RAM. ## HubSpot CRM Integration HubSpot offers a REST API and webhooks for real-time sync. Authentication uses private apps (access token) or OAuth for public apps. The CRM API covers contacts, companies, deals, and tickets. Use the Search API for complex queries. Webhook subscriptions require a valid endpoint that responds to verification challenges. ## Xero Accounting Integration Xero uses OAuth 2.0. The API base is https://api.xero.com/api.xro/2.0/. Endpoints include Invoices, Contacts, Payments, and BankTransactions. Connections are tenant-specific—multi-tenant apps must handle organization switching. Rate limits: 60 calls per minute per organization. ## PostgreSQL Best Practices Use connection pooling (PgBouncer) for web applications. Index foreign keys and frequently queried columns. Avoid N+1 queries—use JOINs or batch loading. For large tables, consider partitioning by date. Always use parameterized queries to prevent SQL injection. ## Redis Caching Patterns Use Redis for session storage, rate limiting, and cache-aside patterns. Set TTLs on cached data to prevent stale reads. Consider Redis Cluster for high availability. Monitor memory usage—Redis holds everything in RAM. ## HubSpot CRM Integration HubSpot offers a REST API and webhooks for real-time sync. Authentication uses private apps (access token) or OAuth for public apps. The CRM API covers contacts, companies, deals, and tickets. Use the Search API for complex queries. Webhook subscriptions require a valid endpoint that responds to verification challenges. ## Xero Accounting Integration Xero uses OAuth 2.0. The API base is https://api.xero.com/api.xro/2.0/. Endpoints include Invoices, Contacts, Payments, and BankTransactions. Connections are tenant-specific—multi-tenant apps must handle organization switching. Rate limits: 60 calls per minute per organization. ## PostgreSQL Best Practices Use connection pooling (PgBouncer) for web applications. Index foreign keys and frequently queried columns. Avoid N+1 queries—use JOINs or batch loading. For large tables, consider partitioning by date. Always use parameterized queries to prevent SQL injection. ## Redis Caching Patterns Use Redis for session storage, rate limiting, and cache-aside patterns. Set TTLs on cached data to prevent stale reads. Consider Redis Cluster for high availability. Monitor memory usage—Redis holds everything in RAM. ## HubSpot CRM Integration HubSpot offers a REST API and webhooks for real-time sync. Authentication uses private apps (access token) or OAuth for public apps. The CRM API covers contacts, companies, deals, and tickets. Use the Search API for complex queries. Webhook subscriptions require a valid endpoint that responds to verification challenges. ## Xero Accounting Integration Xero uses OAuth 2.0. The API base is https://api.xero.com/api.xro/2.0/. Endpoints include Invoices, Contacts, Payments, and BankTransactions. Connections are tenant-specific—multi-tenant apps must handle organization switching. Rate limits: 60 calls per minute per organization. ## PostgreSQL Best Practices Use connection pooling (PgBouncer) for web applications. Index foreign keys and frequently queried columns. Avoid N+1 queries—use JOINs or batch loading. For large tables, consider partitioning by date. Always use parameterized queries to prevent SQL injection. ## Redis Caching Patterns Use Redis for session storage, rate limiting, and cache-aside patterns. Set TTLs on cached data to prevent stale reads. Consider Redis Cluster for high availability. Monitor memory usage—Redis holds everything in RAM. ## HubSpot CRM Integration HubSpot offers a REST API and webhooks for real-time sync. Authentication uses private apps (access token) or OAuth for public apps. The CRM API covers contacts, companies, deals, and tickets. Use the Search API for complex queries. Webhook subscriptions require a valid endpoint that responds to verification challenges. ## Xero Accounting Integration Xero uses OAuth 2.0. The API base is https://api.xero.com/api.xro/2.0/. Endpoints include Invoices, Contacts, Payments, and BankTransactions. Connections are tenant-specific—multi-tenant apps must handle organization switching. Rate limits: 60 calls per minute per organization. ## PostgreSQL Best Practices Use connection pooling (PgBouncer) for web applications. Index foreign keys and frequently queried columns. Avoid N+1 queries—use JOINs or batch loading. For large tables, consider partitioning by date. Always use parameterized queries to prevent SQL injection. ## Redis Caching Patterns Use Redis for session storage, rate limiting, and cache-aside patterns. Set TTLs on cached data to prevent stale reads. Consider Redis Cluster for high availability. Monitor memory usage—Redis holds everything in RAM. ## HubSpot CRM Integration HubSpot offers a REST API and webhooks for real-time sync. Authentication uses private apps (access token) or OAuth for public apps. The CRM API covers contacts, companies, deals, and tickets. Use the Search API for complex queries. Webhook subscriptions require a valid endpoint that responds to verification challenges. ## Xero Accounting Integration Xero uses OAuth 2.0. The API base is https://api.xero.com/api.xro/2.0/. Endpoints include Invoices, Contacts, Payments, and BankTransactions. Connections are tenant-specific—multi-tenant apps must handle organization switching. Rate limits: 60 calls per minute per organization. ## PostgreSQL Best Practices Use connection pooling (PgBouncer) for web applications. Index foreign keys and frequently queried columns. Avoid N+1 queries—use JOINs or batch loading. For large tables, consider partitioning by date. Always use parameterized queries to prevent SQL injection. ## Redis Caching Patterns Use Redis for session storage, rate limiting, and cache-aside patterns. Set TTLs on cached data to prevent stale reads. Consider Redis Cluster for high availability. Monitor memory usage—Redis holds everything in RAM. ## HubSpot CRM Integration HubSpot offers a REST API and webhooks for real-time sync. Authentication uses private apps (access token) or OAuth for public apps. The CRM API covers contacts, companies, deals, and tickets. Use the Search API for complex queries. Webhook subscriptions require a valid endpoint that responds to verification challenges. ## Xero Accounting Integration Xero uses OAuth 2.0. The API base is https://api.xero.com/api.xro/2.0/. Endpoints include Invoices, Contacts, Payments, and BankTransactions. Connections are tenant-specific—multi-tenant apps must handle organization switching. Rate limits: 60 calls per minute per organization. ## PostgreSQL Best Practices Use connection pooling (PgBouncer) for web applications. Index foreign keys and frequently queried columns. Avoid N+1 queries—use JOINs or batch loading. For large tables, consider partitioning by date. Always use parameterized queries to prevent SQL injection. ## Redis Caching Patterns Use Redis for session storage, rate limiting, and cache-aside patterns. Set TTLs on cached data to prevent stale reads. Consider Redis Cluster for high availability. Monitor memory usage—Redis holds everything in RAM. ## HubSpot CRM Integration HubSpot offers a REST API and webhooks for real-time sync. Authentication uses private apps (access token) or OAuth for public apps. The CRM API covers contacts, companies, deals, and tickets. Use the Search API for complex queries. Webhook subscriptions require a valid endpoint that responds to verification challenges. ## Xero Accounting Integration Xero uses OAuth 2.0. The API base is https://api.xero.com/api.xro/2.0/. Endpoints include Invoices, Contacts, Payments, and BankTransactions. Connections are tenant-specific—multi-tenant apps must handle organization switching. Rate limits: 60 calls per minute per organization. ## PostgreSQL Best Practices Use connection pooling (PgBouncer) for web applications. Index foreign keys and frequently queried columns. Avoid N+1 queries—use JOINs or batch loading. For large tables, consider partitioning by date. Always use parameterized queries to prevent SQL injection. ## Redis Caching Patterns Use Redis for session storage, rate limiting, and cache-aside patterns. Set TTLs on cached data to prevent stale reads. Consider Redis Cluster for high availability. Monitor memory usage—Redis holds everything in RAM. ## HubSpot CRM Integration HubSpot offers a REST API and webhooks for real-time sync. Authentication uses private apps (access token) or OAuth for public apps. The CRM API covers contacts, companies, deals, and tickets. Use the Search API for complex queries. Webhook subscriptions require a valid endpoint that responds to verification challenges. ## Xero Accounting Integration Xero uses OAuth 2.0. The API base is https://api.xero.com/api.xro/2.0/. Endpoints include Invoices, Contacts, Payments, and BankTransactions. Connections are tenant-specific—multi-tenant apps must handle organization switching. Rate limits: 60 calls per minute per organization. ## PostgreSQL Best Practices Use connection pooling (PgBouncer) for web applications. Index foreign keys and frequently queried columns. Avoid N+1 queries—use JOINs or batch loading. For large tables, consider partitioning by date. Always use parameterized queries to prevent SQL injection. ## Redis Caching Patterns Use Redis for session storage, rate limiting, and cache-aside patterns. Set TTLs on cached data to prevent stale reads. Consider Redis Cluster for high availability. Monitor memory usage—Redis holds everything in RAM. ## HubSpot CRM Integration HubSpot offers a REST API and webhooks for real-time sync. Authentication uses private apps (access token) or OAuth for public apps. The CRM API covers contacts, companies, deals, and tickets. Use the Search API for complex queries. Webhook subscriptions require a valid endpoint that responds to verification challenges. ## Xero Accounting Integration Xero uses OAuth 2.0. The API base is https://api.xero.com/api.xro/2.0/. Endpoints include Invoices, Contacts, Payments, and BankTransactions. Connections are tenant-specific—multi-tenant apps must handle organization switching. Rate limits: 60 calls per minute per organization. ## PostgreSQL Best Practices Use connection pooling (PgBouncer) for web applications. Index foreign keys and frequently queried columns. Avoid N+1 queries—use JOINs or batch loading. For large tables, consider partitioning by date. Always use parameterized queries to prevent SQL injection. ## Redis Caching Patterns Use Redis for session storage, rate limiting, and cache-aside patterns. Set TTLs on cached data to prevent stale reads. Consider Redis Cluster for high availability. Monitor memory usage—Redis holds everything in RAM. ## HubSpot CRM Integration HubSpot offers a REST API and webhooks for real-time sync. Authentication uses private apps (access token) or OAuth for public apps. The CRM API covers contacts, companies, deals, and tickets. Use the Search API for complex queries. Webhook subscriptions require a valid endpoint that responds to verification challenges. ## Xero Accounting Integration Xero uses OAuth 2.0. The API base is https://api.xero.com/api.xro/2.0/. Endpoints include Invoices, Contacts, Payments, and BankTransactions. Connections are tenant-specific—multi-tenant apps must handle organization switching. Rate limits: 60 calls per minute per organization. ## PostgreSQL Best Practices Use connection pooling (PgBouncer) for web applications. Index foreign keys and frequently queried columns. Avoid N+1 queries—use JOINs or batch loading. For large tables, consider partitioning by date. Always use parameterized queries to prevent SQL injection. ## Redis Caching Patterns Use Redis for session storage, rate limiting, and cache-aside patterns. Set TTLs on cached data to prevent stale reads. Consider Redis Cluster for high availability. Monitor memory usage—Redis holds everything in RAM. ## HubSpot CRM Integration HubSpot offers a REST API and webhooks for real-time sync. Authentication uses private apps (access token) or OAuth for public apps. The CRM API covers contacts, companies, deals, and tickets. Use the Search API for complex queries. Webhook subscriptions require a valid endpoint that responds to verification challenges. ## Xero Accounting Integration Xero uses OAuth 2.0. The API base is https://api.xero.com/api.xro/2.0/. Endpoints include Invoices, Contacts, Payments, and BankTransactions. Connections are tenant-specific—multi-tenant apps must handle organization switching. Rate limits: 60 calls per minute per organization. ## PostgreSQL Best Practices Use connection pooling (PgBouncer) for web applications. Index foreign keys and frequently queried columns. Avoid N+1 queries—use JOINs or batch loading. For large tables, consider partitioning by date. Always use parameterized queries to prevent SQL injection. ## Redis Caching Patterns Use Redis for session storage, rate limiting, and cache-aside patterns. Set TTLs on cached data to prevent stale reads. Consider Redis Cluster for high availability. Monitor memory usage—Redis holds everything in RAM. ## HubSpot CRM Integration HubSpot offers a REST API and webhooks for real-time sync. Authentication uses private apps (access token) or OAuth for public apps. The CRM API covers contacts, companies, deals, and tickets. Use the Search API for complex queries. Webhook subscriptions require a valid endpoint that responds to verification challenges. ## Xero Accounting Integration Xero uses OAuth 2.0. The API base is https://api.xero.com/api.xro/2.0/. Endpoints include Invoices, Contacts, Payments, and BankTransactions. Connections are tenant-specific—multi-tenant apps must handle organization switching. Rate limits: 60 calls per minute per organization. ## PostgreSQL Best Practices Use connection pooling (PgBouncer) for web applications. Index foreign keys and frequently queried columns. Avoid N+1 queries—use JOINs or batch loading. For large tables, consider partitioning by date. Always use parameterized queries to prevent SQL injection. ## Redis Caching Patterns Use Redis for session storage, rate limiting, and cache-aside patterns. Set TTLs on cached data to prevent stale reads. Consider Redis Cluster for high availability. Monitor memory usage—Redis holds everything in RAM. ## HubSpot CRM Integration HubSpot offers a REST API and webhooks for real-time sync. Authentication uses private apps (access token) or OAuth for public apps. The CRM API covers contacts, companies, deals, and tickets. Use the Search API for complex queries. Webhook subscriptions require a valid endpoint that responds to verification challenges. ## Xero Accounting Integration Xero uses OAuth 2.0. The API base is https://api.xero.com/api.xro/2.0/. Endpoints include Invoices, Contacts, Payments, and BankTransactions. Connections are tenant-specific—multi-tenant apps must handle organization switching. Rate limits: 60 calls per minute per organization. ## PostgreSQL Best Practices Use connection pooling (PgBouncer) for web applications. Index foreign keys and frequently queried columns. Avoid N+1 queries—use JOINs or batch loading. For large tables, consider partitioning by date. Always use parameterized queries to prevent SQL injection. ## Redis Caching Patterns Use Redis for session storage, rate limiting, and cache-aside patterns. Set TTLs on cached data to prevent stale reads. Consider Redis Cluster for high availability. Monitor memory usage—Redis holds everything in RAM. ## HubSpot CRM Integration HubSpot offers a REST API and webhooks for real-time sync. Authentication uses private apps (access token) or OAuth for public apps. The CRM API covers contacts, companies, deals, and tickets. Use the Search API for complex queries. Webhook subscriptions require a valid endpoint that responds to verification challenges. ## Xero Accounting Integration Xero uses OAuth 2.0. The API base is https://api.xero.com/api.xro/2.0/. Endpoints include Invoices, Contacts, Payments, and BankTransactions. Connections are tenant-specific—multi-tenant apps must handle organization switching. Rate limits: 60 calls per minute per organization. ## PostgreSQL Best Practices Use connection pooling (PgBouncer) for web applications. Index foreign keys and frequently queried columns. Avoid N+1 queries—use JOINs or batch loading. For large tables, consider partitioning by date. Always use parameterized queries to prevent SQL injection. ## Redis Caching Patterns Use Redis for session storage, rate limiting, and cache-aside patterns. Set TTLs on cached data to prevent stale reads. Consider Redis Cluster for high availability. Monitor memory usage—Redis holds everything in RAM. ## HubSpot CRM Integration HubSpot offers a REST API and webhooks for real-time sync. Authentication uses private apps (access token) or OAuth for public apps. The CRM API covers contacts, companies, deals, and tickets. Use the Search API for complex queries. Webhook subscriptions require a valid endpoint that responds to verification challenges. ## Xero Accounting Integration Xero uses OAuth 2.0. The API base is https://api.xero.com/api.xro/2.0/. Endpoints include Invoices, Contacts, Payments, and BankTransactions. Connections are tenant-specific—multi-tenant apps must handle organization switching. Rate limits: 60 calls per minute per organization. ## PostgreSQL Best Practices Use connection pooling (PgBouncer) for web applications. Index foreign keys and frequently queried columns. Avoid N+1 queries—use JOINs or batch loading. For large tables, consider partitioning by date. Always use parameterized queries to prevent SQL injection. ## Redis Caching Patterns Use Redis for session storage, rate limiting, and cache-aside patterns. Set TTLs on cached data to prevent stale reads. Consider Redis Cluster for high availability. Monitor memory usage—Redis holds everything in RAM. ## HubSpot CRM Integration HubSpot offers a REST API and webhooks for real-time sync. Authentication uses private apps (access token) or OAuth for public apps. The CRM API covers contacts, companies, deals, and tickets. Use the Search API for complex queries. Webhook subscriptions require a valid endpoint that responds to verification challenges. ## Xero Accounting Integration Xero uses OAuth 2.0. The API base is https://api.xero.com/api.xro/2.0/. Endpoints include Invoices, Contacts, Payments, and BankTransactions. Connections are tenant-specific—multi-tenant apps must handle organization switching. Rate limits: 60 calls per minute per organization. ## PostgreSQL Best Practices Use connection pooling (PgBouncer) for web applications. Index foreign keys and frequently queried columns. Avoid N+1 queries—use JOINs or batch loading. For large tables, consider partitioning by date. Always use parameterized queries to prevent SQL injection. ## Redis Caching Patterns Use Redis for session storage, rate limiting, and cache-aside patterns. Set TTLs on cached data to prevent stale reads. Consider Redis Cluster for high availability. Monitor memory usage—Redis holds everything in RAM. ## HubSpot CRM Integration HubSpot offers a REST API and webhooks for real-time sync. Authentication uses private apps (access token) or OAuth for public apps. The CRM API covers contacts, companies, deals, and tickets. Use the Search API for complex queries. Webhook subscriptions require a valid endpoint that responds to verification challenges. ## Xero Accounting Integration Xero uses OAuth 2.0. The API base is https://api.xero.com/api.xro/2.0/. Endpoints include Invoices, Contacts, Payments, and BankTransactions. Connections are tenant-specific—multi-tenant apps must handle organization switching. Rate limits: 60 calls per minute per organization. ## PostgreSQL Best Practices Use connection pooling (PgBouncer) for web applications. Index foreign keys and frequently queried columns. Avoid N+1 queries—use JOINs or batch loading. For large tables, consider partitioning by date. Always use parameterized queries to prevent SQL injection. ## Redis Caching Patterns Use Redis for session storage, rate limiting, and cache-aside patterns. Set TTLs on cached data to prevent stale reads. Consider Redis Cluster for high availability. Monitor memory usage—Redis holds everything in RAM. ## HubSpot CRM Integration HubSpot offers a REST API and webhooks for real-time sync. Authentication uses private apps (access token) or OAuth for public apps. The CRM API covers contacts, companies, deals, and tickets. Use the Search API for complex queries. Webhook subscriptions require a valid endpoint that responds to verification challenges. ## Xero Accounting Integration Xero uses OAuth 2.0. The API base is https://api.xero.com/api.xro/2.0/. Endpoints include Invoices, Contacts, Payments, and BankTransactions. Connections are tenant-specific—multi-tenant apps must handle organization switching. Rate limits: 60 calls per minute per organization. ## PostgreSQL Best Practices Use connection pooling (PgBouncer) for web applications. Index foreign keys and frequently queried columns. Avoid N+1 queries—use JOINs or batch loading. For large tables, consider partitioning by date. Always use parameterized queries to prevent SQL injection. ## Redis Caching Patterns Use Redis for session storage, rate limiting, and cache-aside patterns. Set TTLs on cached data to prevent stale reads. Consider Redis Cluster for high availability. Monitor memory usage—Redis holds everything in RAM. ## HubSpot CRM Integration HubSpot offers a REST API and webhooks for real-time sync. Authentication uses private apps (access token) or OAuth for public apps. The CRM API covers contacts, companies, deals, and tickets. Use the Search API for complex queries. Webhook subscriptions require a valid endpoint that responds to verification challenges. ## Xero Accounting Integration Xero uses OAuth 2.0. The API base is https://api.xero.com/api.xro/2.0/. Endpoints include Invoices, Contacts, Payments, and BankTransactions. Connections are tenant-specific—multi-tenant apps must handle organization switching. Rate limits: 60 calls per minute per organization. ## PostgreSQL Best Practices Use connection pooling (PgBouncer) for web applications. Index foreign keys and frequently queried columns. Avoid N+1 queries—use JOINs or batch loading. For large tables, consider partitioning by date. Always use parameterized queries to prevent SQL injection. ## Redis Caching Patterns Use Redis for session storage, rate limiting, and cache-aside patterns. Set TTLs on cached data to prevent stale reads. Consider Redis Cluster for high availability. Monitor memory usage—Redis holds everything in RAM. ## HubSpot CRM Integration HubSpot offers a REST API and webhooks for real-time sync. Authentication uses private apps (access token) or OAuth for public apps. The CRM API covers contacts, companies, deals, and tickets. Use the Search API for complex queries. Webhook subscriptions require a valid endpoint that responds to verification challenges. ## Xero Accounting Integration Xero uses OAuth 2.0. The API base is https://api.xero.com/api.xro/2.0/. Endpoints include Invoices, Contacts, Payments, and BankTransactions. Connections are tenant-specific—multi-tenant apps must handle organization switching. Rate limits: 60 calls per minute per organization. ## PostgreSQL Best Practices Use connection pooling (PgBouncer) for web applications. Index foreign keys and frequently queried columns. Avoid N+1 queries—use JOINs or batch loading. For large tables, consider partitioning by date. Always use parameterized queries to prevent SQL injection. ## Redis Caching Patterns Use Redis for session storage, rate limiting, and cache-aside patterns. Set TTLs on cached data to prevent stale reads. Consider Redis Cluster for high availability. Monitor memory usage—Redis holds everything in RAM. ## HubSpot CRM Integration HubSpot offers a REST API and webhooks for real-time sync. Authentication uses private apps (access token) or OAuth for public apps. The CRM API covers contacts, companies, deals, and tickets. Use the Search API for complex queries. Webhook subscriptions require a valid endpoint that responds to verification challenges. ## Xero Accounting Integration Xero uses OAuth 2.0. The API base is https://api.xero.com/api.xro/2.0/. Endpoints include Invoices, Contacts, Payments, and BankTransactions. Connections are tenant-specific—multi-tenant apps must handle organization switching. Rate limits: 60 calls per minute per organization. ## PostgreSQL Best Practices Use connection pooling (PgBouncer) for web applications. Index foreign keys and frequently queried columns. Avoid N+1 queries—use JOINs or batch loading. For large tables, consider partitioning by date. Always use parameterized queries to prevent SQL injection. ## Redis Caching Patterns Use Redis for session storage, rate limiting, and cache-aside patterns. Set TTLs on cached data to prevent stale reads. Consider Redis Cluster for high availability. Monitor memory usage—Redis holds everything in RAM. ## HubSpot CRM Integration HubSpot offers a REST API and webhooks for real-time sync. Authentication uses private apps (access token) or OAuth for public apps. The CRM API covers contacts, companies, deals, and tickets. Use the Search API for complex queries. Webhook subscriptions require a valid endpoint that responds to verification challenges. ## Xero Accounting Integration Xero uses OAuth 2.0. The API base is https://api.xero.com/api.xro/2.0/. Endpoints include Invoices, Contacts, Payments, and BankTransactions. Connections are tenant-specific—multi-tenant apps must handle organization switching. Rate limits: 60 calls per minute per organization. ## PostgreSQL Best Practices Use connection pooling (PgBouncer) for web applications. Index foreign keys and frequently queried columns. Avoid N+1 queries—use JOINs or batch loading. For large tables, consider partitioning by date. Always use parameterized queries to prevent SQL injection. ## Redis Caching Patterns Use Redis for session storage, rate limiting, and cache-aside patterns. Set TTLs on cached data to prevent stale reads. Consider Redis Cluster for high availability. Monitor memory usage—Redis holds everything in RAM. ## HubSpot CRM Integration HubSpot offers a REST API and webhooks for real-time sync. Authentication uses private apps (access token) or OAuth for public apps. The CRM API covers contacts, companies, deals, and tickets. Use the Search API for complex queries. Webhook subscriptions require a valid endpoint that responds to verification challenges. ## Xero Accounting Integration Xero uses OAuth 2.0. The API base is https://api.xero.com/api.xro/2.0/. Endpoints include Invoices, Contacts, Payments, and BankTransactions. Connections are tenant-specific—multi-tenant apps must handle organization switching. Rate limits: 60 calls per minute per organization. ## PostgreSQL Best Practices Use connection pooling (PgBouncer) for web applications. Index foreign keys and frequently queried columns. Avoid N+1 queries—use JOINs or batch loading. For large tables, consider partitioning by date. Always use parameterized queries to prevent SQL injection. ## Redis Caching Patterns Use Redis for session storage, rate limiting, and cache-aside patterns. Set TTLs on cached data to prevent stale reads. Consider Redis Cluster for high availability. Monitor memory usage—Redis holds everything in RAM. ## HubSpot CRM Integration HubSpot offers a REST API and webhooks for real-time sync. Authentication uses private apps (access token) or OAuth for public apps. The CRM API covers contacts, companies, deals, and tickets. Use the Search API for complex queries. Webhook subscriptions require a valid endpoint that responds to verification challenges. ## Xero Accounting Integration Xero uses OAuth 2.0. The API base is https://api.xero.com/api.xro/2.0/. Endpoints include Invoices, Contacts, Payments, and BankTransactions. Connections are tenant-specific—multi-tenant apps must handle organization switching. Rate limits: 60 calls per minute per organization. ## PostgreSQL Best Practices Use connection pooling (PgBouncer) for web applications. Index foreign keys and frequently queried columns. Avoid N+1 queries—use JOINs or batch loading. For large tables, consider partitioning by date. Always use parameterized queries to prevent SQL injection. ## Redis Caching Patterns Use Redis for session storage, rate limiting, and cache-aside patterns. Set TTLs on cached data to prevent stale reads. Consider Redis Cluster for high availability. Monitor memory usage—Redis holds everything in RAM. ## HubSpot CRM Integration HubSpot offers a REST API and webhooks for real-time sync. Authentication uses private apps (access token) or OAuth for public apps. The CRM API covers contacts, companies, deals, and tickets. Use the Search API for complex queries. Webhook subscriptions require a valid endpoint that responds to verification challenges. ## Xero Accounting Integration Xero uses OAuth 2.0. The API base is https://api.xero.com/api.xro/2.0/. Endpoints include Invoices, Contacts, Payments, and BankTransactions. Connections are tenant-specific—multi-tenant apps must handle organization switching. Rate limits: 60 calls per minute per organization. ## PostgreSQL Best Practices Use connection pooling (PgBouncer) for web applications. Index foreign keys and frequently queried columns. Avoid N+1 queries—use JOINs or batch loading. For large tables, consider partitioning by date. Always use parameterized queries to prevent SQL injection. ## Redis Caching Patterns Use Redis for session storage, rate limiting, and cache-aside patterns. Set TTLs on cached data to prevent stale reads. Consider Redis Cluster for high availability. Monitor memory usage—Redis holds everything in RAM. ## HubSpot CRM Integration HubSpot offers a REST API and webhooks for real-time sync. Authentication uses private apps (access token) or OAuth for public apps. The CRM API covers contacts, companies, deals, and tickets. Use the Search API for complex queries. Webhook subscriptions require a valid endpoint that responds to verification challenges. ## Xero Accounting Integration Xero uses OAuth 2.0. The API base is https://api.xero.com/api.xro/2.0/. Endpoints include Invoices, Contacts, Payments, and BankTransactions. Connections are tenant-specific—multi-tenant apps must handle organization switching. Rate limits: 60 calls per minute per organization. ## PostgreSQL Best Practices Use connection pooling (PgBouncer) for web applications. Index foreign keys and frequently queried columns. Avoid N+1 queries—use JOINs or batch loading. For large tables, consider partitioning by date. Always use parameterized queries to prevent SQL injection. ## Redis Caching Patterns Use Redis for session storage, rate limiting, and cache-aside patterns. Set TTLs on cached data to prevent stale reads. Consider Redis Cluster for high availability. Monitor memory usage—Redis holds everything in RAM. ## HubSpot CRM Integration HubSpot offers a REST API and webhooks for real-time sync. Authentication uses private apps (access token) or OAuth for public apps. The CRM API covers contacts, companies, deals, and tickets. Use the Search API for complex queries. Webhook subscriptions require a valid endpoint that responds to verification challenges. ## Xero Accounting Integration Xero uses OAuth 2.0. The API base is https://api.xero.com/api.xro/2.0/. Endpoints include Invoices, Contacts, Payments, and BankTransactions. Connections are tenant-specific—multi-tenant apps must handle organization switching. Rate limits: 60 calls per minute per organization. ## PostgreSQL Best Practices Use connection pooling (PgBouncer) for web applications. Index foreign keys and frequently queried columns. Avoid N+1 queries—use JOINs or batch loading. For large tables, consider partitioning by date. Always use parameterized queries to prevent SQL injection. ## Redis Caching Patterns Use Redis for session storage, rate limiting, and cache-aside patterns. Set TTLs on cached data to prevent stale reads. Consider Redis Cluster for high availability. Monitor memory usage—Redis holds everything in RAM. ## HubSpot CRM Integration HubSpot offers a REST API and webhooks for real-time sync. Authentication uses private apps (access token) or OAuth for public apps. The CRM API covers contacts, companies, deals, and tickets. Use the Search API for complex queries. Webhook subscriptions require a valid endpoint that responds to verification challenges. ## Xero Accounting Integration Xero uses OAuth 2.0. The API base is https://api.xero.com/api.xro/2.0/. Endpoints include Invoices, Contacts, Payments, and BankTransactions. Connections are tenant-specific—multi-tenant apps must handle organization switching. Rate limits: 60 calls per minute per organization. ## PostgreSQL Best Practices Use connection pooling (PgBouncer) for web applications. Index foreign keys and frequently queried columns. Avoid N+1 queries—use JOINs or batch loading. For large tables, consider partitioning by date. Always use parameterized queries to prevent SQL injection. ## Redis Caching Patterns Use Redis for session storage, rate limiting, and cache-aside patterns. Set TTLs on cached data to prevent stale reads. Consider Redis Cluster for high availability. Monitor memory usage—Redis holds everything in RAM. ## HubSpot CRM Integration HubSpot offers a REST API and webhooks for real-time sync. Authentication uses private apps (access token) or OAuth for public apps. The CRM API covers contacts, companies, deals, and tickets. Use the Search API for complex queries. Webhook subscriptions require a valid endpoint that responds to verification challenges. ## Xero Accounting Integration Xero uses OAuth 2.0. The API base is https://api.xero.com/api.xro/2.0/. Endpoints include Invoices, Contacts, Payments, and BankTransactions. Connections are tenant-specific—multi-tenant apps must handle organization switching. Rate limits: 60 calls per minute per organization. ## PostgreSQL Best Practices Use connection pooling (PgBouncer) for web applications. Index foreign keys and frequently queried columns. Avoid N+1 queries—use JOINs or batch loading. For large tables, consider partitioning by date. Always use parameterized queries to prevent SQL injection. ## Redis Caching Patterns Use Redis for session storage, rate limiting, and cache-aside patterns. Set TTLs on cached data to prevent stale reads. Consider Redis Cluster for high availability. Monitor memory usage—Redis holds everything in RAM. ## HubSpot CRM Integration HubSpot offers a REST API and webhooks for real-time sync. Authentication uses private apps (access token) or OAuth for public apps. The CRM API covers contacts, companies, deals, and tickets. Use the Search API for complex queries. Webhook subscriptions require a valid endpoint that responds to verification challenges. ## Xero Accounting Integration Xero uses OAuth 2.0. The API base is https://api.xero.com/api.xro/2.0/. Endpoints include Invoices, Contacts, Payments, and BankTransactions. Connections are tenant-specific—multi-tenant apps must handle organization switching. Rate limits: 60 calls per minute per organization. ## PostgreSQL Best Practices Use connection pooling (PgBouncer) for web applications. Index foreign keys and frequently queried columns. Avoid N+1 queries—use JOINs or batch loading. For large tables, consider partitioning by date. Always use parameterized queries to prevent SQL injection. ## Redis Caching Patterns Use Redis for session storage, rate limiting, and cache-aside patterns. Set TTLs on cached data to prevent stale reads. Consider Redis Cluster for high availability. Monitor memory usage—Redis holds everything in RAM. ## HubSpot CRM Integration HubSpot offers a REST API and webhooks for real-time sync. Authentication uses private apps (access token) or OAuth for public apps. The CRM API covers contacts, companies, deals, and tickets. Use the Search API for complex queries. Webhook subscriptions require a valid endpoint that responds to verification challenges. ## Xero Accounting Integration Xero uses OAuth 2.0. The API base is https://api.xero.com/api.xro/2.0/. Endpoints include Invoices, Contacts, Payments, and BankTransactions. Connections are tenant-specific—multi-tenant apps must handle organization switching. Rate limits: 60 calls per minute per organization. ## PostgreSQL Best Practices Use connection pooling (PgBouncer) for web applications. Index foreign keys and frequently queried columns. Avoid N+1 queries—use JOINs or batch loading. For large tables, consider partitioning by date. Always use parameterized queries to prevent SQL injection. ## Redis Caching Patterns Use Redis for session storage, rate limiting, and cache-aside patterns. Set TTLs on cached data to prevent stale reads. Consider Redis Cluster for high availability. Monitor memory usage—Redis holds everything in RAM. ## HubSpot CRM Integration HubSpot offers a REST API and webhooks for real-time sync. Authentication uses private apps (access token) or OAuth for public apps. The CRM API covers contacts, companies, deals, and tickets. Use the Search API for complex queries. Webhook subscriptions require a valid endpoint that responds to verification challenges. ## Xero Accounting Integration Xero uses OAuth 2.0. The API base is https://api.xero.com/api.xro/2.0/. Endpoints include Invoices, Contacts, Payments, and BankTransactions. Connections are tenant-specific—multi-tenant apps must handle organization switching. Rate limits: 60 calls per minute per organization. ## PostgreSQL Best Practices Use connection pooling (PgBouncer) for web applications. Index foreign keys and frequently queried columns. Avoid N+1 queries—use JOINs or batch loading. For large tables, consider partitioning by date. Always use parameterized queries to prevent SQL injection. ## Redis Caching Patterns Use Redis for session storage, rate limiting, and cache-aside patterns. Set TTLs on cached data to prevent stale reads. Consider Redis Cluster for high availability. Monitor memory usage—Redis holds everything in RAM. ## HubSpot CRM Integration HubSpot offers a REST API and webhooks for real-time sync. Authentication uses private apps (access token) or OAuth for public apps. The CRM API covers contacts, companies, deals, and tickets. Use the Search API for complex queries. Webhook subscriptions require a valid endpoint that responds to verification challenges. ## Xero Accounting Integration Xero uses OAuth 2.0. The API base is https://api.xero.com/api.xro/2.0/. Endpoints include Invoices, Contacts, Payments, and BankTransactions. Connections are tenant-specific—multi-tenant apps must handle organization switching. Rate limits: 60 calls per minute per organization. ## PostgreSQL Best Practices Use connection pooling (PgBouncer) for web applications. Index foreign keys and frequently queried columns. Avoid N+1 queries—use JOINs or batch loading. For large tables, consider partitioning by date. Always use parameterized queries to prevent SQL injection. ## Redis Caching Patterns Use Redis for session storage, rate limiting, and cache-aside patterns. Set TTLs on cached data to prevent stale reads. Consider Redis Cluster for high availability. Monitor memory usage—Redis holds everything in RAM. ## HubSpot CRM Integration HubSpot offers a REST API and webhooks for real-time sync. Authentication uses private apps (access token) or OAuth for public apps. The CRM API covers contacts, companies, deals, and tickets. Use the Search API for complex queries. Webhook subscriptions require a valid endpoint that responds to verification challenges. ## Xero Accounting Integration Xero uses OAuth 2.0. The API base is https://api.xero.com/api.xro/2.0/. Endpoints include Invoices, Contacts, Payments, and BankTransactions. Connections are tenant-specific—multi-tenant apps must handle organization switching. Rate limits: 60 calls per minute per organization. ## PostgreSQL Best Practices Use connection pooling (PgBouncer) for web applications. Index foreign keys and frequently queried columns. Avoid N+1 queries—use JOINs or batch loading. For large tables, consider partitioning by date. Always use parameterized queries to prevent SQL injection. ## Redis Caching Patterns Use Redis for session storage, rate limiting, and cache-aside patterns. Set TTLs on cached data to prevent stale reads. Consider Redis Cluster for high availability. Monitor memory usage—Redis holds everything in RAM. ## HubSpot CRM Integration HubSpot offers a REST API and webhooks for real-time sync. Authentication uses private apps (access token) or OAuth for public apps. The CRM API covers contacts, companies, deals, and tickets. Use the Search API for complex queries. Webhook subscriptions require a valid endpoint that responds to verification challenges. ## Xero Accounting Integration Xero uses OAuth 2.0. The API base is https://api.xero.com/api.xro/2.0/. Endpoints include Invoices, Contacts, Payments, and BankTransactions. Connections are tenant-specific—multi-tenant apps must handle organization switching. Rate limits: 60 calls per minute per organization. ## PostgreSQL Best Practices Use connection pooling (PgBouncer) for web applications. Index foreign keys and frequently queried columns. Avoid N+1 queries—use JOINs or batch loading. For large tables, consider partitioning by date. Always use parameterized queries to prevent SQL injection. ## Redis Caching Patterns Use Redis for session storage, rate limiting, and cache-aside patterns. Set TTLs on cached data to prevent stale reads. Consider Redis Cluster for high availability. Monitor memory usage—Redis holds everything in RAM. ## HubSpot CRM Integration HubSpot offers a REST API and webhooks for real-time sync. Authentication uses private apps (access token) or OAuth for public apps. The CRM API covers contacts, companies, deals, and tickets. Use the Search API for complex queries. Webhook subscriptions require a valid endpoint that responds to verification challenges. ## Xero Accounting Integration Xero uses OAuth 2.0. The API base is https://api.xero.com/api.xro/2.0/. Endpoints include Invoices, Contacts, Payments, and BankTransactions. Connections are tenant-specific—multi-tenant apps must handle organization switching. Rate limits: 60 calls per minute per organization. ## PostgreSQL Best Practices Use connection pooling (PgBouncer) for web applications. Index foreign keys and frequently queried columns. Avoid N+1 queries—use JOINs or batch loading. For large tables, consider partitioning by date. Always use parameterized queries to prevent SQL injection. ## Redis Caching Patterns Use Redis for session storage, rate limiting, and cache-aside patterns. Set TTLs on cached data to prevent stale reads. Consider Redis Cluster for high availability. Monitor memory usage—Redis holds everything in RAM. ## HubSpot CRM Integration HubSpot offers a REST API and webhooks for real-time sync. Authentication uses private apps (access token) or OAuth for public apps. The CRM API covers contacts, companies, deals, and tickets. Use the Search API for complex queries. Webhook subscriptions require a valid endpoint that responds to verification challenges. ## Xero Accounting Integration Xero uses OAuth 2.0. The API base is https://api.xero.com/api.xro/2.0/. Endpoints include Invoices, Contacts, Payments, and BankTransactions. Connections are tenant-specific—multi-tenant apps must handle organization switching. Rate limits: 60 calls per minute per organization. ## PostgreSQL Best Practices Use connection pooling (PgBouncer) for web applications. Index foreign keys and frequently queried columns. Avoid N+1 queries—use JOINs or batch loading. For large tables, consider partitioning by date. Always use parameterized queries to prevent SQL injection. ## Redis Caching Patterns Use Redis for session storage, rate limiting, and cache-aside patterns. Set TTLs on cached data to prevent stale reads. Consider Redis Cluster for high availability. Monitor memory usage—Redis holds everything in RAM. ## HubSpot CRM Integration HubSpot offers a REST API and webhooks for real-time sync. Authentication uses private apps (access token) or OAuth for public apps. The CRM API covers contacts, companies, deals, and tickets. Use the Search API for complex queries. Webhook subscriptions require a valid endpoint that responds to verification challenges. ## Xero Accounting Integration Xero uses OAuth 2.0. The API base is https://api.xero.com/api.xro/2.0/. Endpoints include Invoices, Contacts, Payments, and BankTransactions. Connections are tenant-specific—multi-tenant apps must handle organization switching. Rate limits: 60 calls per minute per organization. ## PostgreSQL Best Practices Use connection pooling (PgBouncer) for web applications. Index foreign keys and frequently queried columns. Avoid N+1 queries—use JOINs or batch loading. For large tables, consider partitioning by date. Always use parameterized queries to prevent SQL injection. ## Redis Caching Patterns Use Redis for session storage, rate limiting, and cache-aside patterns. Set TTLs on cached data to prevent stale reads. Consider Redis Cluster for high availability. Monitor memory usage—Redis holds everything in RAM. ## HubSpot CRM Integration HubSpot offers a REST API and webhooks for real-time sync. Authentication uses private apps (access token) or OAuth for public apps. The CRM API covers contacts, companies, deals, and tickets. Use the Search API for complex queries. Webhook subscriptions require a valid endpoint that responds to verification challenges. ## Xero Accounting Integration Xero uses OAuth 2.0. The API base is https://api.xero.com/api.xro/2.0/. Endpoints include Invoices, Contacts, Payments, and BankTransactions. Connections are tenant-specific—multi-tenant apps must handle organization switching. Rate limits: 60 calls per minute per organization. ## PostgreSQL Best Practices Use connection pooling (PgBouncer) for web applications. Index foreign keys and frequently queried columns. Avoid N+1 queries—use JOINs or batch loading. For large tables, consider partitioning by date. Always use parameterized queries to prevent SQL injection. ## Redis Caching Patterns Use Redis for session storage, rate limiting, and cache-aside patterns. Set TTLs on cached data to prevent stale reads. Consider Redis Cluster for high availability. Monitor memory usage—Redis holds everything in RAM. ## HubSpot CRM Integration HubSpot offers a REST API and webhooks for real-time sync. Authentication uses private apps (access token) or OAuth for public apps. The CRM API covers contacts, companies, deals, and tickets. Use the Search API for complex queries. Webhook subscriptions require a valid endpoint that responds to verification challenges. ## Xero Accounting Integration Xero uses OAuth 2.0. The API base is https://api.xero.com/api.xro/2.0/. Endpoints include Invoices, Contacts, Payments, and BankTransactions. Connections are tenant-specific—multi-tenant apps must handle organization switching. Rate limits: 60 calls per minute per organization. ## PostgreSQL Best Practices Use connection pooling (PgBouncer) for web applications. Index foreign keys and frequently queried columns. Avoid N+1 queries—use JOINs or batch loading. For large tables, consider partitioning by date. Always use parameterized queries to prevent SQL injection. ## Redis Caching Patterns Use Redis for session storage, rate limiting, and cache-aside patterns. Set TTLs on cached data to prevent stale reads. Consider Redis Cluster for high availability. Monitor memory usage—Redis holds everything in RAM. ## HubSpot CRM Integration HubSpot offers a REST API and webhooks for real-time sync. Authentication uses private apps (access token) or OAuth for public apps. The CRM API covers contacts, companies, deals, and tickets. Use the Search API for complex queries. Webhook subscriptions require a valid endpoint that responds to verification challenges. ## Xero Accounting Integration Xero uses OAuth 2.0. The API base is https://api.xero.com/api.xro/2.0/. Endpoints include Invoices, Contacts, Payments, and BankTransactions. Connections are tenant-specific—multi-tenant apps must handle organization switching. Rate limits: 60 calls per minute per organization. ## PostgreSQL Best Practices Use connection pooling (PgBouncer) for web applications. Index foreign keys and frequently queried columns. Avoid N+1 queries—use JOINs or batch loading. For large tables, consider partitioning by date. Always use parameterized queries to prevent SQL injection. ## Redis Caching Patterns Use Redis for session storage, rate limiting, and cache-aside patterns. Set TTLs on cached data to prevent stale reads. Consider Redis Cluster for high availability. Monitor memory usage—Redis holds everything in RAM. ## HubSpot CRM Integration HubSpot offers a REST API and webhooks for real-time sync. Authentication uses private apps (access token) or OAuth for public apps. The CRM API covers contacts, companies, deals, and tickets. Use the Search API for complex queries. Webhook subscriptions require a valid endpoint that responds to verification challenges. ## Xero Accounting Integration Xero uses OAuth 2.0. The API base is https://api.xero.com/api.xro/2.0/. Endpoints include Invoices, Contacts, Payments, and BankTransactions. Connections are tenant-specific—multi-tenant apps must handle organization switching. Rate limits: 60 calls per minute per organization. ## PostgreSQL Best Practices Use connection pooling (PgBouncer) for web applications. Index foreign keys and frequently queried columns. Avoid N+1 queries—use JOINs or batch loading. For large tables, consider partitioning by date. Always use parameterized queries to prevent SQL injection. ## Redis Caching Patterns Use Redis for session storage, rate limiting, and cache-aside patterns. Set TTLs on cached data to prevent stale reads. Consider Redis Cluster for high availability. Monitor memory usage—Redis holds everything in RAM. ## HubSpot CRM Integration HubSpot offers a REST API and webhooks for real-time sync. Authentication uses private apps (access token) or OAuth for public apps. The CRM API covers contacts, companies, deals, and tickets. Use the Search API for complex queries. Webhook subscriptions require a valid endpoint that responds to verification challenges. ## Xero Accounting Integration Xero uses OAuth 2.0. The API base is https://api.xero.com/api.xro/2.0/. Endpoints include Invoices, Contacts, Payments, and BankTransactions. Connections are tenant-specific—multi-tenant apps must handle organization switching. Rate limits: 60 calls per minute per organization. ## PostgreSQL Best Practices Use connection pooling (PgBouncer) for web applications. Index foreign keys and frequently queried columns. Avoid N+1 queries—use JOINs or batch loading. For large tables, consider partitioning by date. Always use parameterized queries to prevent SQL injection. ## Redis Caching Patterns Use Redis for session storage, rate limiting, and cache-aside patterns. Set TTLs on cached data to prevent stale reads. Consider Redis Cluster for high availability. Monitor memory usage—Redis holds everything in RAM. ## HubSpot CRM Integration HubSpot offers a REST API and webhooks for real-time sync. Authentication uses private apps (access token) or OAuth for public apps. The CRM API covers contacts, companies, deals, and tickets. Use the Search API for complex queries. Webhook subscriptions require a valid endpoint that responds to verification challenges. ## Xero Accounting Integration Xero uses OAuth 2.0. The API base is https://api.xero.com/api.xro/2.0/. Endpoints include Invoices, Contacts, Payments, and BankTransactions. Connections are tenant-specific—multi-tenant apps must handle organization switching. Rate limits: 60 calls per minute per organization. ## PostgreSQL Best Practices Use connection pooling (PgBouncer) for web applications. Index foreign keys and frequently queried columns. Avoid N+1 queries—use JOINs or batch loading. For large tables, consider partitioning by date. Always use parameterized queries to prevent SQL injection. ## Redis Caching Patterns Use Redis for session storage, rate limiting, and cache-aside patterns. Set TTLs on cached data to prevent stale reads. Consider Redis Cluster for high availability. Monitor memory usage—Redis holds everything in RAM. ## HubSpot CRM Integration HubSpot offers a REST API and webhooks for real-time sync. Authentication uses private apps (access token) or OAuth for public apps. The CRM API covers contacts, companies, deals, and tickets. Use the Search API for complex queries. Webhook subscriptions require a valid endpoint that responds to verification challenges. ## Xero Accounting Integration Xero uses OAuth 2.0. The API base is https://api.xero.com/api.xro/2.0/. Endpoints include Invoices, Contacts, Payments, and BankTransactions. Connections are tenant-specific—multi-tenant apps must handle organization switching. Rate limits: 60 calls per minute per organization. ## PostgreSQL Best Practices Use connection pooling (PgBouncer) for web applications. Index foreign keys and frequently queried columns. Avoid N+1 queries—use JOINs or batch loading. For large tables, consider partitioning by date. Always use parameterized queries to prevent SQL injection. ## Redis Caching Patterns Use Redis for session storage, rate limiting, and cache-aside patterns. Set TTLs on cached data to prevent stale reads. Consider Redis Cluster for high availability. Monitor memory usage—Redis holds everything in RAM. ## HubSpot CRM Integration HubSpot offers a REST API and webhooks for real-time sync. Authentication uses private apps (access token) or OAuth for public apps. The CRM API covers contacts, companies, deals, and tickets. Use the Search API for complex queries. Webhook subscriptions require a valid endpoint that responds to verification challenges. ## Xero Accounting Integration Xero uses OAuth 2.0. The API base is https://api.xero.com/api.xro/2.0/. Endpoints include Invoices, Contacts, Payments, and BankTransactions. Connections are tenant-specific—multi-tenant apps must handle organization switching. Rate limits: 60 calls per minute per organization. ## PostgreSQL Best Practices Use connection pooling (PgBouncer) for web applications. Index foreign keys and frequently queried columns. Avoid N+1 queries—use JOINs or batch loading. For large tables, consider partitioning by date. Always use parameterized queries to prevent SQL injection. ## Redis Caching Patterns Use Redis for session storage, rate limiting, and cache-aside patterns. Set TTLs on cached data to prevent stale reads. Consider Redis Cluster for high availability. Monitor memory usage—Redis holds everything in RAM. ## HubSpot CRM Integration HubSpot offers a REST API and webhooks for real-time sync. Authentication uses private apps (access token) or OAuth for public apps. The CRM API covers contacts, companies, deals, and tickets. Use the Search API for complex queries. Webhook subscriptions require a valid endpoint that responds to verification challenges. ## Xero Accounting Integration Xero uses OAuth 2.0. The API base is https://api.xero.com/api.xro/2.0/. Endpoints include Invoices, Contacts, Payments, and BankTransactions. Connections are tenant-specific—multi-tenant apps must handle organization switching. Rate limits: 60 calls per minute per organization. ## PostgreSQL Best Practices Use connection pooling (PgBouncer) for web applications. Index foreign keys and frequently queried columns. Avoid N+1 queries—use JOINs or batch loading. For large tables, consider partitioning by date. Always use parameterized queries to prevent SQL injection. ## Redis Caching Patterns Use Redis for session storage, rate limiting, and cache-aside patterns. Set TTLs on cached data to prevent stale reads. Consider Redis Cluster for high availability. Monitor memory usage—Redis holds everything in RAM. ## HubSpot CRM Integration HubSpot offers a REST API and webhooks for real-time sync. Authentication uses private apps (access token) or OAuth for public apps. The CRM API covers contacts, companies, deals, and tickets. Use the Search API for complex queries. Webhook subscriptions require a valid endpoint that responds to verification challenges. ## Xero Accounting Integration Xero uses OAuth 2.0. The API base is https://api.xero.com/api.xro/2.0/. Endpoints include Invoices, Contacts, Payments, and BankTransactions. Connections are tenant-specific—multi-tenant apps must handle organization switching. Rate limits: 60 calls per minute per organization. ## PostgreSQL Best Practices Use connection pooling (PgBouncer) for web applications. Index foreign keys and frequently queried columns. Avoid N+1 queries—use JOINs or batch loading. For large tables, consider partitioning by date. Always use parameterized queries to prevent SQL injection. ## Redis Caching Patterns Use Redis for session storage, rate limiting, and cache-aside patterns. Set TTLs on cached data to prevent stale reads. Consider Redis Cluster for high availability. Monitor memory usage—Redis holds everything in RAM. ## HubSpot CRM Integration HubSpot offers a REST API and webhooks for real-time sync. Authentication uses private apps (access token) or OAuth for public apps. The CRM API covers contacts, companies, deals, and tickets. Use the Search API for complex queries. Webhook subscriptions require a valid endpoint that responds to verification challenges. ## Xero Accounting Integration Xero uses OAuth 2.0. The API base is https://api.xero.com/api.xro/2.0/. Endpoints include Invoices, Contacts, Payments, and BankTransactions. Connections are tenant-specific—multi-tenant apps must handle organization switching. Rate limits: 60 calls per minute per organization. ## PostgreSQL Best Practices Use connection pooling (PgBouncer) for web applications. Index foreign keys and frequently queried columns. Avoid N+1 queries—use JOINs or batch loading. For large tables, consider partitioning by date. Always use parameterized queries to prevent SQL injection. ## Redis Caching Patterns Use Redis for session storage, rate limiting, and cache-aside patterns. Set TTLs on cached data to prevent stale reads. Consider Redis Cluster for high availability. Monitor memory usage—Redis holds everything in RAM. ## HubSpot CRM Integration HubSpot offers a REST API and webhooks for real-time sync. Authentication uses private apps (access token) or OAuth for public apps. The CRM API covers contacts, companies, deals, and tickets. Use the Search API for complex queries. Webhook subscriptions require a valid endpoint that responds to verification challenges. ## Xero Accounting Integration Xero uses OAuth 2.0. The API base is https://api.xero.com/api.xro/2.0/. Endpoints include Invoices, Contacts, Payments, and BankTransactions. Connections are tenant-specific—multi-tenant apps must handle organization switching. Rate limits: 60 calls per minute per organization. ## PostgreSQL Best Practices Use connection pooling (PgBouncer) for web applications. Index foreign keys and frequently queried columns. Avoid N+1 queries—use JOINs or batch loading. For large tables, consider partitioning by date. Always use parameterized queries to prevent SQL injection. ## Redis Caching Patterns Use Redis for session storage, rate limiting, and cache-aside patterns. Set TTLs on cached data to prevent stale reads. Consider Redis Cluster for high availability. Monitor memory usage—Redis holds everything in RAM. ## HubSpot CRM Integration HubSpot offers a REST API and webhooks for real-time sync. Authentication uses private apps (access token) or OAuth for public apps. The CRM API covers contacts, companies, deals, and tickets. Use the Search API for complex queries. Webhook subscriptions require a valid endpoint that responds to verification challenges. ## Xero Accounting Integration Xero uses OAuth 2.0. The API base is https://api.xero.com/api.xro/2.0/. Endpoints include Invoices, Contacts, Payments, and BankTransactions. Connections are tenant-specific—multi-tenant apps must handle organization switching. Rate limits: 60 calls per minute per organization. ## PostgreSQL Best Practices Use connection pooling (PgBouncer) for web applications. Index foreign keys and frequently queried columns. Avoid N+1 queries—use JOINs or batch loading. For large tables, consider partitioning by date. Always use parameterized queries to prevent SQL injection. ## Redis Caching Patterns Use Redis for session storage, rate limiting, and cache-aside patterns. Set TTLs on cached data to prevent stale reads. Consider Redis Cluster for high availability. Monitor memory usage—Redis holds everything in RAM. ## HubSpot CRM Integration HubSpot offers a REST API and webhooks for real-time sync. Authentication uses private apps (access token) or OAuth for public apps. The CRM API covers contacts, companies, deals, and tickets. Use the Search API for complex queries. Webhook subscriptions require a valid endpoint that responds to verification challenges. ## Xero Accounting Integration Xero uses OAuth 2.0. The API base is https://api.xero.com/api.xro/2.0/. Endpoints include Invoices, Contacts, Payments, and BankTransactions. Connections are tenant-specific—multi-tenant apps must handle organization switching. Rate limits: 60 calls per minute per organization. ## PostgreSQL Best Practices Use connection pooling (PgBouncer) for web applications. Index foreign keys and frequently queried columns. Avoid N+1 queries—use JOINs or batch loading. For large tables, consider partitioning by date. Always use parameterized queries to prevent SQL injection. ## Redis Caching Patterns Use Redis for session storage, rate limiting, and cache-aside patterns. Set TTLs on cached data to prevent stale reads. Consider Redis Cluster for high availability. Monitor memory usage—Redis holds everything in RAM. ## HubSpot CRM Integration HubSpot offers a REST API and webhooks for real-time sync. Authentication uses private apps (access token) or OAuth for public apps. The CRM API covers contacts, companies, deals, and tickets. Use the Search API for complex queries. Webhook subscriptions require a valid endpoint that responds to verification challenges. ## Xero Accounting Integration Xero uses OAuth 2.0. The API base is https://api.xero.com/api.xro/2.0/. Endpoints include Invoices, Contacts, Payments, and BankTransactions. Connections are tenant-specific—multi-tenant apps must handle organization switching. Rate limits: 60 calls per minute per organization. ## PostgreSQL Best Practices Use connection pooling (PgBouncer) for web applications. Index foreign keys and frequently queried columns. Avoid N+1 queries—use JOINs or batch loading. For large tables, consider partitioning by date. Always use parameterized queries to prevent SQL injection. ## Redis Caching Patterns Use Redis for session storage, rate limiting, and cache-aside patterns. Set TTLs on cached data to prevent stale reads. Consider Redis Cluster for high availability. Monitor memory usage—Redis holds everything in RAM. ## HubSpot CRM Integration HubSpot offers a REST API and webhooks for real-time sync. Authentication uses private apps (access token) or OAuth for public apps. The CRM API covers contacts, companies, deals, and tickets. Use the Search API for complex queries. Webhook subscriptions require a valid endpoint that responds to verification challenges. ## Xero Accounting Integration Xero uses OAuth 2.0. The API base is https://api.xero.com/api.xro/2.0/. Endpoints include Invoices, Contacts, Payments, and BankTransactions. Connections are tenant-specific—multi-tenant apps must handle organization switching. Rate limits: 60 calls per minute per organization. ## PostgreSQL Best Practices Use connection pooling (PgBouncer) for web applications. Index foreign keys and frequently queried columns. Avoid N+1 queries—use JOINs or batch loading. For large tables, consider partitioning by date. Always use parameterized queries to prevent SQL injection. ## Redis Caching Patterns Use Redis for session storage, rate limiting, and cache-aside patterns. Set TTLs on cached data to prevent stale reads. Consider Redis Cluster for high availability. Monitor memory usage—Redis holds everything in RAM. ## HubSpot CRM Integration HubSpot offers a REST API and webhooks for real-time sync. Authentication uses private apps (access token) or OAuth for public apps. The CRM API covers contacts, companies, deals, and tickets. Use the Search API for complex queries. Webhook subscriptions require a valid endpoint that responds to verification challenges. ## Xero Accounting Integration Xero uses OAuth 2.0. The API base is https://api.xero.com/api.xro/2.0/. Endpoints include Invoices, Contacts, Payments, and BankTransactions. Connections are tenant-specific—multi-tenant apps must handle organization switching. Rate limits: 60 calls per minute per organization. ## PostgreSQL Best Practices Use connection pooling (PgBouncer) for web applications. Index foreign keys and frequently queried columns. Avoid N+1 queries—use JOINs or batch loading. For large tables, consider partitioning by date. Always use parameterized queries to prevent SQL injection. ## Redis Caching Patterns Use Redis for session storage, rate limiting, and cache-aside patterns. Set TTLs on cached data to prevent stale reads. Consider Redis Cluster for high availability. Monitor memory usage—Redis holds everything in RAM. ## HubSpot CRM Integration HubSpot offers a REST API and webhooks for real-time sync. Authentication uses private apps (access token) or OAuth for public apps. The CRM API covers contacts, companies, deals, and tickets. Use the Search API for complex queries. Webhook subscriptions require a valid endpoint that responds to verification challenges. ## Xero Accounting Integration Xero uses OAuth 2.0. The API base is https://api.xero.com/api.xro/2.0/. Endpoints include Invoices, Contacts, Payments, and BankTransactions. Connections are tenant-specific—multi-tenant apps must handle organization switching. Rate limits: 60 calls per minute per organization. ## PostgreSQL Best Practices Use connection pooling (PgBouncer) for web applications. Index foreign keys and frequently queried columns. Avoid N+1 queries—use JOINs or batch loading. For large tables, consider partitioning by date. Always use parameterized queries to prevent SQL injection. ## Redis Caching Patterns Use Redis for session storage, rate limiting, and cache-aside patterns. Set TTLs on cached data to prevent stale reads. Consider Redis Cluster for high availability. Monitor memory usage—Redis holds everything in RAM. ## HubSpot CRM Integration HubSpot offers a REST API and webhooks for real-time sync. Authentication uses private apps (access token) or OAuth for public apps. The CRM API covers contacts, companies, deals, and tickets. Use the Search API for complex queries. Webhook subscriptions require a valid endpoint that responds to verification challenges. ## Xero Accounting Integration Xero uses OAuth 2.0. The API base is https://api.xero.com/api.xro/2.0/. Endpoints include Invoices, Contacts, Payments, and BankTransactions. Connections are tenant-specific—multi-tenant apps must handle organization switching. Rate limits: 60 calls per minute per organization. ## PostgreSQL Best Practices Use connection pooling (PgBouncer) for web applications. Index foreign keys and frequently queried columns. Avoid N+1 queries—use JOINs or batch loading. For large tables, consider partitioning by date. Always use parameterized queries to prevent SQL injection. ## Redis Caching Patterns Use Redis for session storage, rate limiting, and cache-aside patterns. Set TTLs on cached data to prevent stale reads. Consider Redis Cluster for high availability. Monitor memory usage—Redis holds everything in RAM. ## HubSpot CRM Integration HubSpot offers a REST API and webhooks for real-time sync. Authentication uses private apps (access token) or OAuth for public apps. The CRM API covers contacts, companies, deals, and tickets. Use the Search API for complex queries. Webhook subscriptions require a valid endpoint that responds to verification challenges. ## Xero Accounting Integration Xero uses OAuth 2.0. The API base is https://api.xero.com/api.xro/2.0/. Endpoints include Invoices, Contacts, Payments, and BankTransactions. Connections are tenant-specific—multi-tenant apps must handle organization switching. Rate limits: 60 calls per minute per organization. ## PostgreSQL Best Practices Use connection pooling (PgBouncer) for web applications. Index foreign keys and frequently queried columns. Avoid N+1 queries—use JOINs or batch loading. For large tables, consider partitioning by date. Always use parameterized queries to prevent SQL injection. ## Redis Caching Patterns Use Redis for session storage, rate limiting, and cache-aside patterns. Set TTLs on cached data to prevent stale reads. Consider Redis Cluster for high availability. Monitor memory usage—Redis holds everything in RAM. ## HubSpot CRM Integration HubSpot offers a REST API and webhooks for real-time sync. Authentication uses private apps (access token) or OAuth for public apps. The CRM API covers contacts, companies, deals, and tickets. Use the Search API for complex queries. Webhook subscriptions require a valid endpoint that responds to verification challenges. ## Xero Accounting Integration Xero uses OAuth 2.0. The API base is https://api.xero.com/api.xro/2.0/. Endpoints include Invoices, Contacts, Payments, and BankTransactions. Connections are tenant-specific—multi-tenant apps must handle organization switching. Rate limits: 60 calls per minute per organization. ## PostgreSQL Best Practices Use connection pooling (PgBouncer) for web applications. Index foreign keys and frequently queried columns. Avoid N+1 queries—use JOINs or batch loading. For large tables, consider partitioning by date. Always use parameterized queries to prevent SQL injection. ## Redis Caching Patterns Use Redis for session storage, rate limiting, and cache-aside patterns. Set TTLs on cached data to prevent stale reads. Consider Redis Cluster for high availability. Monitor memory usage—Redis holds everything in RAM. ## HubSpot CRM Integration HubSpot offers a REST API and webhooks for real-time sync. Authentication uses private apps (access token) or OAuth for public apps. The CRM API covers contacts, companies, deals, and tickets. Use the Search API for complex queries. Webhook subscriptions require a valid endpoint that responds to verification challenges. ## Xero Accounting Integration Xero uses OAuth 2.0. The API base is https://api.xero.com/api.xro/2.0/. Endpoints include Invoices, Contacts, Payments, and BankTransactions. Connections are tenant-specific—multi-tenant apps must handle organization switching. Rate limits: 60 calls per minute per organization. ## PostgreSQL Best Practices Use connection pooling (PgBouncer) for web applications. Index foreign keys and frequently queried columns. Avoid N+1 queries—use JOINs or batch loading. For large tables, consider partitioning by date. Always use parameterized queries to prevent SQL injection. ## Redis Caching Patterns Use Redis for session storage, rate limiting, and cache-aside patterns. Set TTLs on cached data to prevent stale reads. Consider Redis Cluster for high availability. Monitor memory usage—Redis holds everything in RAM. ## HubSpot CRM Integration HubSpot offers a REST API and webhooks for real-time sync. Authentication uses private apps (access token) or OAuth for public apps. The CRM API covers contacts, companies, deals, and tickets. Use the Search API for complex queries. Webhook subscriptions require a valid endpoint that responds to verification challenges. ## Xero Accounting Integration Xero uses OAuth 2.0. The API base is https://api.xero.com/api.xro/2.0/. Endpoints include Invoices, Contacts, Payments, and BankTransactions. Connections are tenant-specific—multi-tenant apps must handle organization switching. Rate limits: 60 calls per minute per organization. ## PostgreSQL Best Practices Use connection pooling (PgBouncer) for web applications. Index foreign keys and frequently queried columns. Avoid N+1 queries—use JOINs or batch loading. For large tables, consider partitioning by date. Always use parameterized queries to prevent SQL injection. ## Redis Caching Patterns Use Redis for session storage, rate limiting, and cache-aside patterns. Set TTLs on cached data to prevent stale reads. Consider Redis Cluster for high availability. Monitor memory usage—Redis holds everything in RAM. ## HubSpot CRM Integration HubSpot offers a REST API and webhooks for real-time sync. Authentication uses private apps (access token) or OAuth for public apps. The CRM API covers contacts, companies, deals, and tickets. Use the Search API for complex queries. Webhook subscriptions require a valid endpoint that responds to verification challenges. ## Xero Accounting Integration Xero uses OAuth 2.0. The API base is https://api.xero.com/api.xro/2.0/. Endpoints include Invoices, Contacts, Payments, and BankTransactions. Connections are tenant-specific—multi-tenant apps must handle organization switching. Rate limits: 60 calls per minute per organization. ## PostgreSQL Best Practices Use connection pooling (PgBouncer) for web applications. Index foreign keys and frequently queried columns. Avoid N+1 queries—use JOINs or batch loading. For large tables, consider partitioning by date. Always use parameterized queries to prevent SQL injection. ## Redis Caching Patterns Use Redis for session storage, rate limiting, and cache-aside patterns. Set TTLs on cached data to prevent stale reads. Consider Redis Cluster for high availability. Monitor memory usage—Redis holds everything in RAM. ## HubSpot CRM Integration HubSpot offers a REST API and webhooks for real-time sync. Authentication uses private apps (access token) or OAuth for public apps. The CRM API covers contacts, companies, deals, and tickets. Use the Search API for complex queries. Webhook subscriptions require a valid endpoint that responds to verification challenges. ## Xero Accounting Integration Xero uses OAuth 2.0. The API base is https://api.xero.com/api.xro/2.0/. Endpoints include Invoices, Contacts, Payments, and BankTransactions. Connections are tenant-specific—multi-tenant apps must handle organization switching. Rate limits: 60 calls per minute per organization. ## PostgreSQL Best Practices Use connection pooling (PgBouncer) for web applications. Index foreign keys and frequently queried columns. Avoid N+1 queries—use JOINs or batch loading. For large tables, consider partitioning by date. Always use parameterized queries to prevent SQL injection. ## Redis Caching Patterns Use Redis for session storage, rate limiting, and cache-aside patterns. Set TTLs on cached data to prevent stale reads. Consider Redis Cluster for high availability. Monitor memory usage—Redis holds everything in RAM. ## HubSpot CRM Integration HubSpot offers a REST API and webhooks for real-time sync. Authentication uses private apps (access token) or OAuth for public apps. The CRM API covers contacts, companies, deals, and tickets. Use the Search API for complex queries. Webhook subscriptions require a valid endpoint that responds to verification challenges. ## Xero Accounting Integration Xero uses OAuth 2.0. The API base is https://api.xero.com/api.xro/2.0/. Endpoints include Invoices, Contacts, Payments, and BankTransactions. Connections are tenant-specific—multi-tenant apps must handle organization switching. Rate limits: 60 calls per minute per organization. ## PostgreSQL Best Practices Use connection pooling (PgBouncer) for web applications. Index foreign keys and frequently queried columns. Avoid N+1 queries—use JOINs or batch loading. For large tables, consider partitioning by date. Always use parameterized queries to prevent SQL injection. ## Redis Caching Patterns Use Redis for session storage, rate limiting, and cache-aside patterns. Set TTLs on cached data to prevent stale reads. Consider Redis Cluster for high availability. Monitor memory usage—Redis holds everything in RAM. ## HubSpot CRM Integration HubSpot offers a REST API and webhooks for real-time sync. Authentication uses private apps (access token) or OAuth for public apps. The CRM API covers contacts, companies, deals, and tickets. Use the Search API for complex queries. Webhook subscriptions require a valid endpoint that responds to verification challenges. ## Xero Accounting Integration Xero uses OAuth 2.0. The API base is https://api.xero.com/api.xro/2.0/. Endpoints include Invoices, Contacts, Payments, and BankTransactions. Connections are tenant-specific—multi-tenant apps must handle organization switching. Rate limits: 60 calls per minute per organization. ## PostgreSQL Best Practices Use connection pooling (PgBouncer) for web applications. Index foreign keys and frequently queried columns. Avoid N+1 queries—use JOINs or batch loading. For large tables, consider partitioning by date. Always use parameterized queries to prevent SQL injection. ## Redis Caching Patterns Use Redis for session storage, rate limiting, and cache-aside patterns. Set TTLs on cached data to prevent stale reads. Consider Redis Cluster for high availability. Monitor memory usage—Redis holds everything in RAM. ## HubSpot CRM Integration HubSpot offers a REST API and webhooks for real-time sync. Authentication uses private apps (access token) or OAuth for public apps. The CRM API covers contacts, companies, deals, and tickets. Use the Search API for complex queries. Webhook subscriptions require a valid endpoint that responds to verification challenges. ## Xero Accounting Integration Xero uses OAuth 2.0. The API base is https://api.xero.com/api.xro/2.0/. Endpoints include Invoices, Contacts, Payments, and BankTransactions. Connections are tenant-specific—multi-tenant apps must handle organization switching. Rate limits: 60 calls per minute per organization. ## PostgreSQL Best Practices Use connection pooling (PgBouncer) for web applications. Index foreign keys and frequently queried columns. Avoid N+1 queries—use JOINs or batch loading. For large tables, consider partitioning by date. Always use parameterized queries to prevent SQL injection. ## Redis Caching Patterns Use Redis for session storage, rate limiting, and cache-aside patterns. Set TTLs on cached data to prevent stale reads. Consider Redis Cluster for high availability. Monitor memory usage—Redis holds everything in RAM. ## HubSpot CRM Integration HubSpot offers a REST API and webhooks for real-time sync. Authentication uses private apps (access token) or OAuth for public apps. The CRM API covers contacts, companies, deals, and tickets. Use the Search API for complex queries. Webhook subscriptions require a valid endpoint that responds to verification challenges. ## Xero Accounting Integration Xero uses OAuth 2.0. The API base is https://api.xero.com/api.xro/2.0/. Endpoints include Invoices, Contacts, Payments, and BankTransactions. Connections are tenant-specific—multi-tenant apps must handle organization switching. Rate limits: 60 calls per minute per organization. ## PostgreSQL Best Practices Use connection pooling (PgBouncer) for web applications. Index foreign keys and frequently queried columns. Avoid N+1 queries—use JOINs or batch loading. For large tables, consider partitioning by date. Always use parameterized queries to prevent SQL injection. ## Redis Caching Patterns Use Redis for session storage, rate limiting, and cache-aside patterns. Set TTLs on cached data to prevent stale reads. Consider Redis Cluster for high availability. Monitor memory usage—Redis holds everything in RAM. ## HubSpot CRM Integration HubSpot offers a REST API and webhooks for real-time sync. Authentication uses private apps (access token) or OAuth for public apps. The CRM API covers contacts, companies, deals, and tickets. Use the Search API for complex queries. Webhook subscriptions require a valid endpoint that responds to verification challenges. ## Xero Accounting Integration Xero uses OAuth 2.0. The API base is https://api.xero.com/api.xro/2.0/. Endpoints include Invoices, Contacts, Payments, and BankTransactions. Connections are tenant-specific—multi-tenant apps must handle organization switching. Rate limits: 60 calls per minute per organization. ## PostgreSQL Best Practices Use connection pooling (PgBouncer) for web applications. Index foreign keys and frequently queried columns. Avoid N+1 queries—use JOINs or batch loading. For large tables, consider partitioning by date. Always use parameterized queries to prevent SQL injection. ## Redis Caching Patterns Use Redis for session storage, rate limiting, and cache-aside patterns. Set TTLs on cached data to prevent stale reads. Consider Redis Cluster for high availability. Monitor memory usage—Redis holds everything in RAM. ## HubSpot CRM Integration HubSpot offers a REST API and webhooks for real-time sync. Authentication uses private apps (access token) or OAuth for public apps. The CRM API covers contacts, companies, deals, and tickets. Use the Search API for complex queries. Webhook subscriptions require a valid endpoint that responds to verification challenges. ## Xero Accounting Integration Xero uses OAuth 2.0. The API base is https://api.xero.com/api.xro/2.0/. Endpoints include Invoices, Contacts, Payments, and BankTransactions. Connections are tenant-specific—multi-tenant apps must handle organization switching. Rate limits: 60 calls per minute per organization. ## PostgreSQL Best Practices Use connection pooling (PgBouncer) for web applications. Index foreign keys and frequently queried columns. Avoid N+1 queries—use JOINs or batch loading. For large tables, consider partitioning by date. Always use parameterized queries to prevent SQL injection. ## Redis Caching Patterns Use Redis for session storage, rate limiting, and cache-aside patterns. Set TTLs on cached data to prevent stale reads. Consider Redis Cluster for high availability. Monitor memory usage—Redis holds everything in RAM. ## HubSpot CRM Integration HubSpot offers a REST API and webhooks for real-time sync. Authentication uses private apps (access token) or OAuth for public apps. The CRM API covers contacts, companies, deals, and tickets. Use the Search API for complex queries. Webhook subscriptions require a valid endpoint that responds to verification challenges. ## Xero Accounting Integration Xero uses OAuth 2.0. The API base is https://api.xero.com/api.xro/2.0/. Endpoints include Invoices, Contacts, Payments, and BankTransactions. Connections are tenant-specific—multi-tenant apps must handle organization switching. Rate limits: 60 calls per minute per organization. ## PostgreSQL Best Practices Use connection pooling (PgBouncer) for web applications. Index foreign keys and frequently queried columns. Avoid N+1 queries—use JOINs or batch loading. For large tables, consider partitioning by date. Always use parameterized queries to prevent SQL injection. ## Redis Caching Patterns Use Redis for session storage, rate limiting, and cache-aside patterns. Set TTLs on cached data to prevent stale reads. Consider Redis Cluster for high availability. Monitor memory usage—Redis holds everything in RAM. ## HubSpot CRM Integration HubSpot offers a REST API and webhooks for real-time sync. Authentication uses private apps (access token) or OAuth for public apps. The CRM API covers contacts, companies, deals, and tickets. Use the Search API for complex queries. Webhook subscriptions require a valid endpoint that responds to verification challenges. ## Xero Accounting Integration Xero uses OAuth 2.0. The API base is https://api.xero.com/api.xro/2.0/. Endpoints include Invoices, Contacts, Payments, and BankTransactions. Connections are tenant-specific—multi-tenant apps must handle organization switching. Rate limits: 60 calls per minute per organization. ## PostgreSQL Best Practices Use connection pooling (PgBouncer) for web applications. Index foreign keys and frequently queried columns. Avoid N+1 queries—use JOINs or batch loading. For large tables, consider partitioning by date. Always use parameterized queries to prevent SQL injection. ## Redis Caching Patterns Use Redis for session storage, rate limiting, and cache-aside patterns. Set TTLs on cached data to prevent stale reads. Consider Redis Cluster for high availability. Monitor memory usage—Redis holds everything in RAM. ## HubSpot CRM Integration HubSpot offers a REST API and webhooks for real-time sync. Authentication uses private apps (access token) or OAuth for public apps. The CRM API covers contacts, companies, deals, and tickets. Use the Search API for complex queries. Webhook subscriptions require a valid endpoint that responds to verification challenges. ## Xero Accounting Integration Xero uses OAuth 2.0. The API base is https://api.xero.com/api.xro/2.0/. Endpoints include Invoices, Contacts, Payments, and BankTransactions. Connections are tenant-specific—multi-tenant apps must handle organization switching. Rate limits: 60 calls per minute per organization. ## PostgreSQL Best Practices Use connection pooling (PgBouncer) for web applications. Index foreign keys and frequently queried columns. Avoid N+1 queries—use JOINs or batch loading. For large tables, consider partitioning by date. Always use parameterized queries to prevent SQL injection. ## Redis Caching Patterns Use Redis for session storage, rate limiting, and cache-aside patterns. Set TTLs on cached data to prevent stale reads. Consider Redis Cluster for high availability. Monitor memory usage—Redis holds everything in RAM. ## HubSpot CRM Integration HubSpot offers a REST API and webhooks for real-time sync. Authentication uses private apps (access token) or OAuth for public apps. The CRM API covers contacts, companies, deals, and tickets. Use the Search API for complex queries. Webhook subscriptions require a valid endpoint that responds to verification challenges. ## Xero Accounting Integration Xero uses OAuth 2.0. The API base is https://api.xero.com/api.xro/2.0/. Endpoints include Invoices, Contacts, Payments, and BankTransactions. Connections are tenant-specific—multi-tenant apps must handle organization switching. Rate limits: 60 calls per minute per organization. ## PostgreSQL Best Practices Use connection pooling (PgBouncer) for web applications. Index foreign keys and frequently queried columns. Avoid N+1 queries—use JOINs or batch loading. For large tables, consider partitioning by date. Always use parameterized queries to prevent SQL injection. ## Redis Caching Patterns Use Redis for session storage, rate limiting, and cache-aside patterns. Set TTLs on cached data to prevent stale reads. Consider Redis Cluster for high availability. Monitor memory usage—Redis holds everything in RAM. ## HubSpot CRM Integration HubSpot offers a REST API and webhooks for real-time sync. Authentication uses private apps (access token) or OAuth for public apps. The CRM API covers contacts, companies, deals, and tickets. Use the Search API for complex queries. Webhook subscriptions require a valid endpoint that responds to verification challenges. ## Xero Accounting Integration Xero uses OAuth 2.0. The API base is https://api.xero.com/api.xro/2.0/. Endpoints include Invoices, Contacts, Payments, and BankTransactions. Connections are tenant-specific—multi-tenant apps must handle organization switching. Rate limits: 60 calls per minute per organization. ## PostgreSQL Best Practices Use connection pooling (PgBouncer) for web applications. Index foreign keys and frequently queried columns. Avoid N+1 queries—use JOINs or batch loading. For large tables, consider partitioning by date. Always use parameterized queries to prevent SQL injection. ## Redis Caching Patterns Use Redis for session storage, rate limiting, and cache-aside patterns. Set TTLs on cached data to prevent stale reads. Consider Redis Cluster for high availability. Monitor memory usage—Redis holds everything in RAM. ## HubSpot CRM Integration HubSpot offers a REST API and webhooks for real-time sync. Authentication uses private apps (access token) or OAuth for public apps. The CRM API covers contacts, companies, deals, and tickets. Use the Search API for complex queries. Webhook subscriptions require a valid endpoint that responds to verification challenges. ## Xero Accounting Integration Xero uses OAuth 2.0. The API base is https://api.xero.com/api.xro/2.0/. Endpoints include Invoices, Contacts, Payments, and BankTransactions. Connections are tenant-specific—multi-tenant apps must handle organization switching. Rate limits: 60 calls per minute per organization. ## PostgreSQL Best Practices Use connection pooling (PgBouncer) for web applications. Index foreign keys and frequently queried columns. Avoid N+1 queries—use JOINs or batch loading. For large tables, consider partitioning by date. Always use parameterized queries to prevent SQL injection. ## Redis Caching Patterns Use Redis for session storage, rate limiting, and cache-aside patterns. Set TTLs on cached data to prevent stale reads. Consider Redis Cluster for high availability. Monitor memory usage—Redis holds everything in RAM. ## HubSpot CRM Integration HubSpot offers a REST API and webhooks for real-time sync. Authentication uses private apps (access token) or OAuth for public apps. The CRM API covers contacts, companies, deals, and tickets. Use the Search API for complex queries. Webhook subscriptions require a valid endpoint that responds to verification challenges. ## Xero Accounting Integration Xero uses OAuth 2.0. The API base is https://api.xero.com/api.xro/2.0/. Endpoints include Invoices, Contacts, Payments, and BankTransactions. Connections are tenant-specific—multi-tenant apps must handle organization switching. Rate limits: 60 calls per minute per organization. ## PostgreSQL Best Practices Use connection pooling (PgBouncer) for web applications. Index foreign keys and frequently queried columns. Avoid N+1 queries—use JOINs or batch loading. For large tables, consider partitioning by date. Always use parameterized queries to prevent SQL injection. ## Redis Caching Patterns Use Redis for session storage, rate limiting, and cache-aside patterns. Set TTLs on cached data to prevent stale reads. Consider Redis Cluster for high availability. Monitor memory usage—Redis holds everything in RAM. ## HubSpot CRM Integration HubSpot offers a REST API and webhooks for real-time sync. Authentication uses private apps (access token) or OAuth for public apps. The CRM API covers contacts, companies, deals, and tickets. Use the Search API for complex queries. Webhook subscriptions require a valid endpoint that responds to verification challenges. ## Xero Accounting Integration Xero uses OAuth 2.0. The API base is https://api.xero.com/api.xro/2.0/. Endpoints include Invoices, Contacts, Payments, and BankTransactions. Connections are tenant-specific—multi-tenant apps must handle organization switching. Rate limits: 60 calls per minute per organization. ## PostgreSQL Best Practices Use connection pooling (PgBouncer) for web applications. Index foreign keys and frequently queried columns. Avoid N+1 queries—use JOINs or batch loading. For large tables, consider partitioning by date. Always use parameterized queries to prevent SQL injection. ## Redis Caching Patterns Use Redis for session storage, rate limiting, and cache-aside patterns. Set TTLs on cached data to prevent stale reads. Consider Redis Cluster for high availability. Monitor memory usage—Redis holds everything in RAM. ## HubSpot CRM Integration HubSpot offers a REST API and webhooks for real-time sync. Authentication uses private apps (access token) or OAuth for public apps. The CRM API covers contacts, companies, deals, and tickets. Use the Search API for complex queries. Webhook subscriptions require a valid endpoint that responds to verification challenges. ## Xero Accounting Integration Xero uses OAuth 2.0. The API base is https://api.xero.com/api.xro/2.0/. Endpoints include Invoices, Contacts, Payments, and BankTransactions. Connections are tenant-specific—multi-tenant apps must handle organization switching. Rate limits: 60 calls per minute per organization. ## PostgreSQL Best Practices Use connection pooling (PgBouncer) for web applications. Index foreign keys and frequently queried columns. Avoid N+1 queries—use JOINs or batch loading. For large tables, consider partitioning by date. Always use parameterized queries to prevent SQL injection. ## Redis Caching Patterns Use Redis for session storage, rate limiting, and cache-aside patterns. Set TTLs on cached data to prevent stale reads. Consider Redis Cluster for high availability. Monitor memory usage—Redis holds everything in RAM. ## HubSpot CRM Integration HubSpot offers a REST API and webhooks for real-time sync. Authentication uses private apps (access token) or OAuth for public apps. The CRM API covers contacts, companies, deals, and tickets. Use the Search API for complex queries. Webhook subscriptions require a valid endpoint that responds to verification challenges. ## Xero Accounting Integration Xero uses OAuth 2.0. The API base is https://api.xero.com/api.xro/2.0/. Endpoints include Invoices, Contacts, Payments, and BankTransactions. Connections are tenant-specific—multi-tenant apps must handle organization switching. Rate limits: 60 calls per minute per organization. ## PostgreSQL Best Practices Use connection pooling (PgBouncer) for web applications. Index foreign keys and frequently queried columns. Avoid N+1 queries—use JOINs or batch loading. For large tables, consider partitioning by date. Always use parameterized queries to prevent SQL injection. ## Redis Caching Patterns Use Redis for session storage, rate limiting, and cache-aside patterns. Set TTLs on cached data to prevent stale reads. Consider Redis Cluster for high availability. Monitor memory usage—Redis holds everything in RAM. ## HubSpot CRM Integration HubSpot offers a REST API and webhooks for real-time sync. Authentication uses private apps (access token) or OAuth for public apps. The CRM API covers contacts, companies, deals, and tickets. Use the Search API for complex queries. Webhook subscriptions require a valid endpoint that responds to verification challenges. ## Xero Accounting Integration Xero uses OAuth 2.0. The API base is https://api.xero.com/api.xro/2.0/. Endpoints include Invoices, Contacts, Payments, and BankTransactions. Connections are tenant-specific—multi-tenant apps must handle organization switching. Rate limits: 60 calls per minute per organization. ## PostgreSQL Best Practices Use connection pooling (PgBouncer) for web applications. Index foreign keys and frequently queried columns. Avoid N+1 queries—use JOINs or batch loading. For large tables, consider partitioning by date. Always use parameterized queries to prevent SQL injection. ## Redis Caching Patterns Use Redis for session storage, rate limiting, and cache-aside patterns. Set TTLs on cached data to prevent stale reads. Consider Redis Cluster for high availability. Monitor memory usage—Redis holds everything in RAM. ## HubSpot CRM Integration HubSpot offers a REST API and webhooks for real-time sync. Authentication uses private apps (access token) or OAuth for public apps. The CRM API covers contacts, companies, deals, and tickets. Use the Search API for complex queries. Webhook subscriptions require a valid endpoint that responds to verification challenges. ## Xero Accounting Integration Xero uses OAuth 2.0. The API base is https://api.xero.com/api.xro/2.0/. Endpoints include Invoices, Contacts, Payments, and BankTransactions. Connections are tenant-specific—multi-tenant apps must handle organization switching. Rate limits: 60 calls per minute per organization. ## PostgreSQL Best Practices Use connection pooling (PgBouncer) for web applications. Index foreign keys and frequently queried columns. Avoid N+1 queries—use JOINs or batch loading. For large tables, consider partitioning by date. Always use parameterized queries to prevent SQL injection. ## Redis Caching Patterns Use Redis for session storage, rate limiting, and cache-aside patterns. Set TTLs on cached data to prevent stale reads. Consider Redis Cluster for high availability. Monitor memory usage—Redis holds everything in RAM. ## HubSpot CRM Integration HubSpot offers a REST API and webhooks for real-time sync. Authentication uses private apps (access token) or OAuth for public apps. The CRM API covers contacts, companies, deals, and tickets. Use the Search API for complex queries. Webhook subscriptions require a valid endpoint that responds to verification challenges. ## Xero Accounting Integration Xero uses OAuth 2.0. The API base is https://api.xero.com/api.xro/2.0/. Endpoints include Invoices, Contacts, Payments, and BankTransactions. Connections are tenant-specific—multi-tenant apps must handle organization switching. Rate limits: 60 calls per minute per organization. ## PostgreSQL Best Practices Use connection pooling (PgBouncer) for web applications. Index foreign keys and frequently queried columns. Avoid N+1 queries—use JOINs or batch loading. For large tables, consider partitioning by date. Always use parameterized queries to prevent SQL injection. ## Redis Caching Patterns Use Redis for session storage, rate limiting, and cache-aside patterns. Set TTLs on cached data to prevent stale reads. Consider Redis Cluster for high availability. Monitor memory usage—Redis holds everything in RAM. ## HubSpot CRM Integration HubSpot offers a REST API and webhooks for real-time sync. Authentication uses private apps (access token) or OAuth for public apps. The CRM API covers contacts, companies, deals, and tickets. Use the Search API for complex queries. Webhook subscriptions require a valid endpoint that responds to verification challenges. ## Xero Accounting Integration Xero uses OAuth 2.0. The API base is https://api.xero.com/api.xro/2.0/. Endpoints include Invoices, Contacts, Payments, and BankTransactions. Connections are tenant-specific—multi-tenant apps must handle organization switching. Rate limits: 60 calls per minute per organization. ## PostgreSQL Best Practices Use connection pooling (PgBouncer) for web applications. Index foreign keys and frequently queried columns. Avoid N+1 queries—use JOINs or batch loading. For large tables, consider partitioning by date. Always use parameterized queries to prevent SQL injection. ## Redis Caching Patterns Use Redis for session storage, rate limiting, and cache-aside patterns. Set TTLs on cached data to prevent stale reads. Consider Redis Cluster for high availability. Monitor memory usage—Redis holds everything in RAM. ## HubSpot CRM Integration HubSpot offers a REST API and webhooks for real-time sync. Authentication uses private apps (access token) or OAuth for public apps. The CRM API covers contacts, companies, deals, and tickets. Use the Search API for complex queries. Webhook subscriptions require a valid endpoint that responds to verification challenges. ## Xero Accounting Integration Xero uses OAuth 2.0. The API base is https://api.xero.com/api.xro/2.0/. Endpoints include Invoices, Contacts, Payments, and BankTransactions. Connections are tenant-specific—multi-tenant apps must handle organization switching. Rate limits: 60 calls per minute per organization. ## PostgreSQL Best Practices Use connection pooling (PgBouncer) for web applications. Index foreign keys and frequently queried columns. Avoid N+1 queries—use JOINs or batch loading. For large tables, consider partitioning by date. Always use parameterized queries to prevent SQL injection. ## Redis Caching Patterns Use Redis for session storage, rate limiting, and cache-aside patterns. Set TTLs on cached data to prevent stale reads. Consider Redis Cluster for high availability. Monitor memory usage—Redis holds everything in RAM. ## HubSpot CRM Integration HubSpot offers a REST API and webhooks for real-time sync. Authentication uses private apps (access token) or OAuth for public apps. The CRM API covers contacts, companies, deals, and tickets. Use the Search API for complex queries. Webhook subscriptions require a valid endpoint that responds to verification challenges. ## Xero Accounting Integration Xero uses OAuth 2.0. The API base is https://api.xero.com/api.xro/2.0/. Endpoints include Invoices, Contacts, Payments, and BankTransactions. Connections are tenant-specific—multi-tenant apps must handle organization switching. Rate limits: 60 calls per minute per organization. ## PostgreSQL Best Practices Use connection pooling (PgBouncer) for web applications. Index foreign keys and frequently queried columns. Avoid N+1 queries—use JOINs or batch loading. For large tables, consider partitioning by date. Always use parameterized queries to prevent SQL injection. ## Redis Caching Patterns Use Redis for session storage, rate limiting, and cache-aside patterns. Set TTLs on cached data to prevent stale reads. Consider Redis Cluster for high availability. Monitor memory usage—Redis holds everything in RAM. ## HubSpot CRM Integration HubSpot offers a REST API and webhooks for real-time sync. Authentication uses private apps (access token) or OAuth for public apps. The CRM API covers contacts, companies, deals, and tickets. Use the Search API for complex queries. Webhook subscriptions require a valid endpoint that responds to verification challenges. ## Xero Accounting Integration Xero uses OAuth 2.0. The API base is https://api.xero.com/api.xro/2.0/. Endpoints include Invoices, Contacts, Payments, and BankTransactions. Connections are tenant-specific—multi-tenant apps must handle organization switching. Rate limits: 60 calls per minute per organization. ## PostgreSQL Best Practices Use connection pooling (PgBouncer) for web applications. Index foreign keys and frequently queried columns. Avoid N+1 queries—use JOINs or batch loading. For large tables, consider partitioning by date. Always use parameterized queries to prevent SQL injection. ## Redis Caching Patterns Use Redis for session storage, rate limiting, and cache-aside patterns. Set TTLs on cached data to prevent stale reads. Consider Redis Cluster for high availability. Monitor memory usage—Redis holds everything in RAM. ## HubSpot CRM Integration HubSpot offers a REST API and webhooks for real-time sync. Authentication uses private apps (access token) or OAuth for public apps. The CRM API covers contacts, companies, deals, and tickets. Use the Search API for complex queries. Webhook subscriptions require a valid endpoint that responds to verification challenges. ## Xero Accounting Integration Xero uses OAuth 2.0. The API base is https://api.xero.com/api.xro/2.0/. Endpoints include Invoices, Contacts, Payments, and BankTransactions. Connections are tenant-specific—multi-tenant apps must handle organization switching. Rate limits: 60 calls per minute per organization. ## PostgreSQL Best Practices Use connection pooling (PgBouncer) for web applications. Index foreign keys and frequently queried columns. Avoid N+1 queries—use JOINs or batch loading. For large tables, consider partitioning by date. Always use parameterized queries to prevent SQL injection. ## Redis Caching Patterns Use Redis for session storage, rate limiting, and cache-aside patterns. Set TTLs on cached data to prevent stale reads. Consider Redis Cluster for high availability. Monitor memory usage—Redis holds everything in RAM. ## HubSpot CRM Integration HubSpot offers a REST API and webhooks for real-time sync. Authentication uses private apps (access token) or OAuth for public apps. The CRM API covers contacts, companies, deals, and tickets. Use the Search API for complex queries. Webhook subscriptions require a valid endpoint that responds to verification challenges. ## Xero Accounting Integration Xero uses OAuth 2.0. The API base is https://api.xero.com/api.xro/2.0/. Endpoints include Invoices, Contacts, Payments, and BankTransactions. Connections are tenant-specific—multi-tenant apps must handle organization switching. Rate limits: 60 calls per minute per organization. ## PostgreSQL Best Practices Use connection pooling (PgBouncer) for web applications. Index foreign keys and frequently queried columns. Avoid N+1 queries—use JOINs or batch loading. For large tables, consider partitioning by date. Always use parameterized queries to prevent SQL injection. ## Redis Caching Patterns Use Redis for session storage, rate limiting, and cache-aside patterns. Set TTLs on cached data to prevent stale reads. Consider Redis Cluster for high availability. Monitor memory usage—Redis holds everything in RAM. ## HubSpot CRM Integration HubSpot offers a REST API and webhooks for real-time sync. Authentication uses private apps (access token) or OAuth for public apps. The CRM API covers contacts, companies, deals, and tickets. Use the Search API for complex queries. Webhook subscriptions require a valid endpoint that responds to verification challenges. ## Xero Accounting Integration Xero uses OAuth 2.0. The API base is https://api.xero.com/api.xro/2.0/. Endpoints include Invoices, Contacts, Payments, and BankTransactions. Connections are tenant-specific—multi-tenant apps must handle organization switching. Rate limits: 60 calls per minute per organization. ## PostgreSQL Best Practices Use connection pooling (PgBouncer) for web applications. Index foreign keys and frequently queried columns. Avoid N+1 queries—use JOINs or batch loading. For large tables, consider partitioning by date. Always use parameterized queries to prevent SQL injection. ## Redis Caching Patterns Use Redis for session storage, rate limiting, and cache-aside patterns. Set TTLs on cached data to prevent stale reads. Consider Redis Cluster for high availability. Monitor memory usage—Redis holds everything in RAM. ## HubSpot CRM Integration HubSpot offers a REST API and webhooks for real-time sync. Authentication uses private apps (access token) or OAuth for public apps. The CRM API covers contacts, companies, deals, and tickets. Use the Search API for complex queries. Webhook subscriptions require a valid endpoint that responds to verification challenges. ## Xero Accounting Integration Xero uses OAuth 2.0. The API base is https://api.xero.com/api.xro/2.0/. Endpoints include Invoices, Contacts, Payments, and BankTransactions. Connections are tenant-specific—multi-tenant apps must handle organization switching. Rate limits: 60 calls per minute per organization. ## PostgreSQL Best Practices Use connection pooling (PgBouncer) for web applications. Index foreign keys and frequently queried columns. Avoid N+1 queries—use JOINs or batch loading. For large tables, consider partitioning by date. Always use parameterized queries to prevent SQL injection. ## Redis Caching Patterns Use Redis for session storage, rate limiting, and cache-aside patterns. Set TTLs on cached data to prevent stale reads. Consider Redis Cluster for high availability. Monitor memory usage—Redis holds everything in RAM. ## HubSpot CRM Integration HubSpot offers a REST API and webhooks for real-time sync. Authentication uses private apps (access token) or OAuth for public apps. The CRM API covers contacts, companies, deals, and tickets. Use the Search API for complex queries. Webhook subscriptions require a valid endpoint that responds to verification challenges. ## Xero Accounting Integration Xero uses OAuth 2.0. The API base is https://api.xero.com/api.xro/2.0/. Endpoints include Invoices, Contacts, Payments, and BankTransactions. Connections are tenant-specific—multi-tenant apps must handle organization switching. Rate limits: 60 calls per minute per organization. ## PostgreSQL Best Practices Use connection pooling (PgBouncer) for web applications. Index foreign keys and frequently queried columns. Avoid N+1 queries—use JOINs or batch loading. For large tables, consider partitioning by date. Always use parameterized queries to prevent SQL injection. ## Redis Caching Patterns Use Redis for session storage, rate limiting, and cache-aside patterns. Set TTLs on cached data to prevent stale reads. Consider Redis Cluster for high availability. Monitor memory usage—Redis holds everything in RAM. ## HubSpot CRM Integration HubSpot offers a REST API and webhooks for real-time sync. Authentication uses private apps (access token) or OAuth for public apps. The CRM API covers contacts, companies, deals, and tickets. Use the Search API for complex queries. Webhook subscriptions require a valid endpoint that responds to verification challenges. ## Xero Accounting Integration Xero uses OAuth 2.0. The API base is https://api.xero.com/api.xro/2.0/. Endpoints include Invoices, Contacts, Payments, and BankTransactions. Connections are tenant-specific—multi-tenant apps must handle organization switching. Rate limits: 60 calls per minute per organization. ## PostgreSQL Best Practices Use connection pooling (PgBouncer) for web applications. Index foreign keys and frequently queried columns. Avoid N+1 queries—use JOINs or batch loading. For large tables, consider partitioning by date. Always use parameterized queries to prevent SQL injection. ## Redis Caching Patterns Use Redis for session storage, rate limiting, and cache-aside patterns. Set TTLs on cached data to prevent stale reads. Consider Redis Cluster for high availability. Monitor memory usage—Redis holds everything in RAM. ## HubSpot CRM Integration HubSpot offers a REST API and webhooks for real-time sync. Authentication uses private apps (access token) or OAuth for public apps. The CRM API covers contacts, companies, deals, and tickets. Use the Search API for complex queries. Webhook subscriptions require a valid endpoint that responds to verification challenges. ## Xero Accounting Integration Xero uses OAuth 2.0. The API base is https://api.xero.com/api.xro/2.0/. Endpoints include Invoices, Contacts, Payments, and BankTransactions. Connections are tenant-specific—multi-tenant apps must handle organization switching. Rate limits: 60 calls per minute per organization. ## PostgreSQL Best Practices Use connection pooling (PgBouncer) for web applications. Index foreign keys and frequently queried columns. Avoid N+1 queries—use JOINs or batch loading. For large tables, consider partitioning by date. Always use parameterized queries to prevent SQL injection. ## Redis Caching Patterns Use Redis for session storage, rate limiting, and cache-aside patterns. Set TTLs on cached data to prevent stale reads. Consider Redis Cluster for high availability. Monitor memory usage—Redis holds everything in RAM. ## HubSpot CRM Integration HubSpot offers a REST API and webhooks for real-time sync. Authentication uses private apps (access token) or OAuth for public apps. The CRM API covers contacts, companies, deals, and tickets. Use the Search API for complex queries. Webhook subscriptions require a valid endpoint that responds to verification challenges. ## Xero Accounting Integration Xero uses OAuth 2.0. The API base is https://api.xero.com/api.xro/2.0/. Endpoints include Invoices, Contacts, Payments, and BankTransactions. Connections are tenant-specific—multi-tenant apps must handle organization switching. Rate limits: 60 calls per minute per organization. ## PostgreSQL Best Practices Use connection pooling (PgBouncer) for web applications. Index foreign keys and frequently queried columns. Avoid N+1 queries—use JOINs or batch loading. For large tables, consider partitioning by date. Always use parameterized queries to prevent SQL injection. ## Redis Caching Patterns Use Redis for session storage, rate limiting, and cache-aside patterns. Set TTLs on cached data to prevent stale reads. Consider Redis Cluster for high availability. Monitor memory usage—Redis holds everything in RAM. ## HubSpot CRM Integration HubSpot offers a REST API and webhooks for real-time sync. Authentication uses private apps (access token) or OAuth for public apps. The CRM API covers contacts, companies, deals, and tickets. Use the Search API for complex queries. Webhook subscriptions require a valid endpoint that responds to verification challenges. ## Xero Accounting Integration Xero uses OAuth 2.0. The API base is https://api.xero.com/api.xro/2.0/. Endpoints include Invoices, Contacts, Payments, and BankTransactions. Connections are tenant-specific—multi-tenant apps must handle organization switching. Rate limits: 60 calls per minute per organization. ## PostgreSQL Best Practices Use connection pooling (PgBouncer) for web applications. Index foreign keys and frequently queried columns. Avoid N+1 queries—use JOINs or batch loading. For large tables, consider partitioning by date. Always use parameterized queries to prevent SQL injection. ## Redis Caching Patterns Use Redis for session storage, rate limiting, and cache-aside patterns. Set TTLs on cached data to prevent stale reads. Consider Redis Cluster for high availability. Monitor memory usage—Redis holds everything in RAM. ## HubSpot CRM Integration HubSpot offers a REST API and webhooks for real-time sync. Authentication uses private apps (access token) or OAuth for public apps. The CRM API covers contacts, companies, deals, and tickets. Use the Search API for complex queries. Webhook subscriptions require a valid endpoint that responds to verification challenges. ## Xero Accounting Integration Xero uses OAuth 2.0. The API base is https://api.xero.com/api.xro/2.0/. Endpoints include Invoices, Contacts, Payments, and BankTransactions. Connections are tenant-specific—multi-tenant apps must handle organization switching. Rate limits: 60 calls per minute per organization. ## PostgreSQL Best Practices Use connection pooling (PgBouncer) for web applications. Index foreign keys and frequently queried columns. Avoid N+1 queries—use JOINs or batch loading. For large tables, consider partitioning by date. Always use parameterized queries to prevent SQL injection. ## Redis Caching Patterns Use Redis for session storage, rate limiting, and cache-aside patterns. Set TTLs on cached data to prevent stale reads. Consider Redis Cluster for high availability. Monitor memory usage—Redis holds everything in RAM. ## HubSpot CRM Integration HubSpot offers a REST API and webhooks for real-time sync. Authentication uses private apps (access token) or OAuth for public apps. The CRM API covers contacts, companies, deals, and tickets. Use the Search API for complex queries. Webhook subscriptions require a valid endpoint that responds to verification challenges. ## Xero Accounting Integration Xero uses OAuth 2.0. The API base is https://api.xero.com/api.xro/2.0/. Endpoints include Invoices, Contacts, Payments, and BankTransactions. Connections are tenant-specific—multi-tenant apps must handle organization switching. Rate limits: 60 calls per minute per organization. ## PostgreSQL Best Practices Use connection pooling (PgBouncer) for web applications. Index foreign keys and frequently queried columns. Avoid N+1 queries—use JOINs or batch loading. For large tables, consider partitioning by date. Always use parameterized queries to prevent SQL injection. ## Redis Caching Patterns Use Redis for session storage, rate limiting, and cache-aside patterns. Set TTLs on cached data to prevent stale reads. Consider Redis Cluster for high availability. Monitor memory usage—Redis holds everything in RAM. ## HubSpot CRM Integration HubSpot offers a REST API and webhooks for real-time sync. Authentication uses private apps (access token) or OAuth for public apps. The CRM API covers contacts, companies, deals, and tickets. Use the Search API for complex queries. Webhook subscriptions require a valid endpoint that responds to verification challenges. ## Xero Accounting Integration Xero uses OAuth 2.0. The API base is https://api.xero.com/api.xro/2.0/. Endpoints include Invoices, Contacts, Payments, and BankTransactions. Connections are tenant-specific—multi-tenant apps must handle organization switching. Rate limits: 60 calls per minute per organization. ## PostgreSQL Best Practices Use connection pooling (PgBouncer) for web applications. Index foreign keys and frequently queried columns. Avoid N+1 queries—use JOINs or batch loading. For large tables, consider partitioning by date. Always use parameterized queries to prevent SQL injection. ## Redis Caching Patterns Use Redis for session storage, rate limiting, and cache-aside patterns. Set TTLs on cached data to prevent stale reads. Consider Redis Cluster for high availability. Monitor memory usage—Redis holds everything in RAM. ## HubSpot CRM Integration HubSpot offers a REST API and webhooks for real-time sync. Authentication uses private apps (access token) or OAuth for public apps. The CRM API covers contacts, companies, deals, and tickets. Use the Search API for complex queries. Webhook subscriptions require a valid endpoint that responds to verification challenges. ## Xero Accounting Integration Xero uses OAuth 2.0. The API base is https://api.xero.com/api.xro/2.0/. Endpoints include Invoices, Contacts, Payments, and BankTransactions. Connections are tenant-specific—multi-tenant apps must handle organization switching. Rate limits: 60 calls per minute per organization. ## PostgreSQL Best Practices Use connection pooling (PgBouncer) for web applications. Index foreign keys and frequently queried columns. Avoid N+1 queries—use JOINs or batch loading. For large tables, consider partitioning by date. Always use parameterized queries to prevent SQL injection. ## Redis Caching Patterns Use Redis for session storage, rate limiting, and cache-aside patterns. Set TTLs on cached data to prevent stale reads. Consider Redis Cluster for high availability. Monitor memory usage—Redis holds everything in RAM. ## HubSpot CRM Integration HubSpot offers a REST API and webhooks for real-time sync. Authentication uses private apps (access token) or OAuth for public apps. The CRM API covers contacts, companies, deals, and tickets. Use the Search API for complex queries. Webhook subscriptions require a valid endpoint that responds to verification challenges. ## Xero Accounting Integration Xero uses OAuth 2.0. The API base is https://api.xero.com/api.xro/2.0/. Endpoints include Invoices, Contacts, Payments, and BankTransactions. Connections are tenant-specific—multi-tenant apps must handle organization switching. Rate limits: 60 calls per minute per organization. ## PostgreSQL Best Practices Use connection pooling (PgBouncer) for web applications. Index foreign keys and frequently queried columns. Avoid N+1 queries—use JOINs or batch loading. For large tables, consider partitioning by date. Always use parameterized queries to prevent SQL injection. ## Redis Caching Patterns Use Redis for session storage, rate limiting, and cache-aside patterns. Set TTLs on cached data to prevent stale reads. Consider Redis Cluster for high availability. Monitor memory usage—Redis holds everything in RAM. ## HubSpot CRM Integration HubSpot offers a REST API and webhooks for real-time sync. Authentication uses private apps (access token) or OAuth for public apps. The CRM API covers contacts, companies, deals, and tickets. Use the Search API for complex queries. Webhook subscriptions require a valid endpoint that responds to verification challenges. ## Xero Accounting Integration Xero uses OAuth 2.0. The API base is https://api.xero.com/api.xro/2.0/. Endpoints include Invoices, Contacts, Payments, and BankTransactions. Connections are tenant-specific—multi-tenant apps must handle organization switching. Rate limits: 60 calls per minute per organization. ## PostgreSQL Best Practices Use connection pooling (PgBouncer) for web applications. Index foreign keys and frequently queried columns. Avoid N+1 queries—use JOINs or batch loading. For large tables, consider partitioning by date. Always use parameterized queries to prevent SQL injection. ## Redis Caching Patterns Use Redis for session storage, rate limiting, and cache-aside patterns. Set TTLs on cached data to prevent stale reads. Consider Redis Cluster for high availability. Monitor memory usage—Redis holds everything in RAM. ## HubSpot CRM Integration HubSpot offers a REST API and webhooks for real-time sync. Authentication uses private apps (access token) or OAuth for public apps. The CRM API covers contacts, companies, deals, and tickets. Use the Search API for complex queries. Webhook subscriptions require a valid endpoint that responds to verification challenges. ## Xero Accounting Integration Xero uses OAuth 2.0. The API base is https://api.xero.com/api.xro/2.0/. Endpoints include Invoices, Contacts, Payments, and BankTransactions. Connections are tenant-specific—multi-tenant apps must handle organization switching. Rate limits: 60 calls per minute per organization. ## PostgreSQL Best Practices Use connection pooling (PgBouncer) for web applications. Index foreign keys and frequently queried columns. Avoid N+1 queries—use JOINs or batch loading. For large tables, consider partitioning by date. Always use parameterized queries to prevent SQL injection. ## Redis Caching Patterns Use Redis for session storage, rate limiting, and cache-aside patterns. Set TTLs on cached data to prevent stale reads. Consider Redis Cluster for high availability. Monitor memory usage—Redis holds everything in RAM. ## HubSpot CRM Integration HubSpot offers a REST API and webhooks for real-time sync. Authentication uses private apps (access token) or OAuth for public apps. The CRM API covers contacts, companies, deals, and tickets. Use the Search API for complex queries. Webhook subscriptions require a valid endpoint that responds to verification challenges. ## Xero Accounting Integration Xero uses OAuth 2.0. The API base is https://api.xero.com/api.xro/2.0/. Endpoints include Invoices, Contacts, Payments, and BankTransactions. Connections are tenant-specific—multi-tenant apps must handle organization switching. Rate limits: 60 calls per minute per organization. ## PostgreSQL Best Practices Use connection pooling (PgBouncer) for web applications. Index foreign keys and frequently queried columns. Avoid N+1 queries—use JOINs or batch loading. For large tables, consider partitioning by date. Always use parameterized queries to prevent SQL injection. ## Redis Caching Patterns Use Redis for session storage, rate limiting, and cache-aside patterns. Set TTLs on cached data to prevent stale reads. Consider Redis Cluster for high availability. Monitor memory usage—Redis holds everything in RAM. ## HubSpot CRM Integration HubSpot offers a REST API and webhooks for real-time sync. Authentication uses private apps (access token) or OAuth for public apps. The CRM API covers contacts, companies, deals, and tickets. Use the Search API for complex queries. Webhook subscriptions require a valid endpoint that responds to verification challenges. ## Xero Accounting Integration Xero uses OAuth 2.0. The API base is https://api.xero.com/api.xro/2.0/. Endpoints include Invoices, Contacts, Payments, and BankTransactions. Connections are tenant-specific—multi-tenant apps must handle organization switching. Rate limits: 60 calls per minute per organization. ## PostgreSQL Best Practices Use connection pooling (PgBouncer) for web applications. Index foreign keys and frequently queried columns. Avoid N+1 queries—use JOINs or batch loading. For large tables, consider partitioning by date. Always use parameterized queries to prevent SQL injection. ## Redis Caching Patterns Use Redis for session storage, rate limiting, and cache-aside patterns. Set TTLs on cached data to prevent stale reads. Consider Redis Cluster for high availability. Monitor memory usage—Redis holds everything in RAM. ## HubSpot CRM Integration HubSpot offers a REST API and webhooks for real-time sync. Authentication uses private apps (access token) or OAuth for public apps. The CRM API covers contacts, companies, deals, and tickets. Use the Search API for complex queries. Webhook subscriptions require a valid endpoint that responds to verification challenges. ## Xero Accounting Integration Xero uses OAuth 2.0. The API base is https://api.xero.com/api.xro/2.0/. Endpoints include Invoices, Contacts, Payments, and BankTransactions. Connections are tenant-specific—multi-tenant apps must handle organization switching. Rate limits: 60 calls per minute per organization. ## PostgreSQL Best Practices Use connection pooling (PgBouncer) for web applications. Index foreign keys and frequently queried columns. Avoid N+1 queries—use JOINs or batch loading. For large tables, consider partitioning by date. Always use parameterized queries to prevent SQL injection. ## Redis Caching Patterns Use Redis for session storage, rate limiting, and cache-aside patterns. Set TTLs on cached data to prevent stale reads. Consider Redis Cluster for high availability. Monitor memory usage—Redis holds everything in RAM. ## HubSpot CRM Integration HubSpot offers a REST API and webhooks for real-time sync. Authentication uses private apps (access token) or OAuth for public apps. The CRM API covers contacts, companies, deals, and tickets. Use the Search API for complex queries. Webhook subscriptions require a valid endpoint that responds to verification challenges. ## Xero Accounting Integration Xero uses OAuth 2.0. The API base is https://api.xero.com/api.xro/2.0/. Endpoints include Invoices, Contacts, Payments, and BankTransactions. Connections are tenant-specific—multi-tenant apps must handle organization switching. Rate limits: 60 calls per minute per organization. ## PostgreSQL Best Practices Use connection pooling (PgBouncer) for web applications. Index foreign keys and frequently queried columns. Avoid N+1 queries—use JOINs or batch loading. For large tables, consider partitioning by date. Always use parameterized queries to prevent SQL injection. ## Redis Caching Patterns Use Redis for session storage, rate limiting, and cache-aside patterns. Set TTLs on cached data to prevent stale reads. Consider Redis Cluster for high availability. Monitor memory usage—Redis holds everything in RAM. ## HubSpot CRM Integration HubSpot offers a REST API and webhooks for real-time sync. Authentication uses private apps (access token) or OAuth for public apps. The CRM API covers contacts, companies, deals, and tickets. Use the Search API for complex queries. Webhook subscriptions require a valid endpoint that responds to verification challenges. ## Xero Accounting Integration Xero uses OAuth 2.0. The API base is https://api.xero.com/api.xro/2.0/. Endpoints include Invoices, Contacts, Payments, and BankTransactions. Connections are tenant-specific—multi-tenant apps must handle organization switching. Rate limits: 60 calls per minute per organization. ## PostgreSQL Best Practices Use connection pooling (PgBouncer) for web applications. Index foreign keys and frequently queried columns. Avoid N+1 queries—use JOINs or batch loading. For large tables, consider partitioning by date. Always use parameterized queries to prevent SQL injection. ## Redis Caching Patterns Use Redis for session storage, rate limiting, and cache-aside patterns. Set TTLs on cached data to prevent stale reads. Consider Redis Cluster for high availability. Monitor memory usage—Redis holds everything in RAM. ## HubSpot CRM Integration HubSpot offers a REST API and webhooks for real-time sync. Authentication uses private apps (access token) or OAuth for public apps. The CRM API covers contacts, companies, deals, and tickets. Use the Search API for complex queries. Webhook subscriptions require a valid endpoint that responds to verification challenges. ## Xero Accounting Integration Xero uses OAuth 2.0. The API base is https://api.xero.com/api.xro/2.0/. Endpoints include Invoices, Contacts, Payments, and BankTransactions. Connections are tenant-specific—multi-tenant apps must handle organization switching. Rate limits: 60 calls per minute per organization. ## PostgreSQL Best Practices Use connection pooling (PgBouncer) for web applications. Index foreign keys and frequently queried columns. Avoid N+1 queries—use JOINs or batch loading. For large tables, consider partitioning by date. Always use parameterized queries to prevent SQL injection. ## Redis Caching Patterns Use Redis for session storage, rate limiting, and cache-aside patterns. Set TTLs on cached data to prevent stale reads. Consider Redis Cluster for high availability. Monitor memory usage—Redis holds everything in RAM. ## HubSpot CRM Integration HubSpot offers a REST API and webhooks for real-time sync. Authentication uses private apps (access token) or OAuth for public apps. The CRM API covers contacts, companies, deals, and tickets. Use the Search API for complex queries. Webhook subscriptions require a valid endpoint that responds to verification challenges. ## Xero Accounting Integration Xero uses OAuth 2.0. The API base is https://api.xero.com/api.xro/2.0/. Endpoints include Invoices, Contacts, Payments, and BankTransactions. Connections are tenant-specific—multi-tenant apps must handle organization switching. Rate limits: 60 calls per minute per organization. ## PostgreSQL Best Practices Use connection pooling (PgBouncer) for web applications. Index foreign keys and frequently queried columns. Avoid N+1 queries—use JOINs or batch loading. For large tables, consider partitioning by date. Always use parameterized queries to prevent SQL injection. ## Redis Caching Patterns Use Redis for session storage, rate limiting, and cache-aside patterns. Set TTLs on cached data to prevent stale reads. Consider Redis Cluster for high availability. Monitor memory usage—Redis holds everything in RAM. ## HubSpot CRM Integration HubSpot offers a REST API and webhooks for real-time sync. Authentication uses private apps (access token) or OAuth for public apps. The CRM API covers contacts, companies, deals, and tickets. Use the Search API for complex queries. Webhook subscriptions require a valid endpoint that responds to verification challenges. ## Xero Accounting Integration Xero uses OAuth 2.0. The API base is https://api.xero.com/api.xro/2.0/. Endpoints include Invoices, Contacts, Payments, and BankTransactions. Connections are tenant-specific—multi-tenant apps must handle organization switching. Rate limits: 60 calls per minute per organization. ## PostgreSQL Best Practices Use connection pooling (PgBouncer) for web applications. Index foreign keys and frequently queried columns. Avoid N+1 queries—use JOINs or batch loading. For large tables, consider partitioning by date. Always use parameterized queries to prevent SQL injection. ## Redis Caching Patterns Use Redis for session storage, rate limiting, and cache-aside patterns. Set TTLs on cached data to prevent stale reads. Consider Redis Cluster for high availability. Monitor memory usage—Redis holds everything in RAM. ## HubSpot CRM Integration HubSpot offers a REST API and webhooks for real-time sync. Authentication uses private apps (access token) or OAuth for public apps. The CRM API covers contacts, companies, deals, and tickets. Use the Search API for complex queries. Webhook subscriptions require a valid endpoint that responds to verification challenges. ## Xero Accounting Integration Xero uses OAuth 2.0. The API base is https://api.xero.com/api.xro/2.0/. Endpoints include Invoices, Contacts, Payments, and BankTransactions. Connections are tenant-specific—multi-tenant apps must handle organization switching. Rate limits: 60 calls per minute per organization. ## PostgreSQL Best Practices Use connection pooling (PgBouncer) for web applications. Index foreign keys and frequently queried columns. Avoid N+1 queries—use JOINs or batch loading. For large tables, consider partitioning by date. Always use parameterized queries to prevent SQL injection. ## Redis Caching Patterns Use Redis for session storage, rate limiting, and cache-aside patterns. Set TTLs on cached data to prevent stale reads. Consider Redis Cluster for high availability. Monitor memory usage—Redis holds everything in RAM. ## HubSpot CRM Integration HubSpot offers a REST API and webhooks for real-time sync. Authentication uses private apps (access token) or OAuth for public apps. The CRM API covers contacts, companies, deals, and tickets. Use the Search API for complex queries. Webhook subscriptions require a valid endpoint that responds to verification challenges. ## Xero Accounting Integration Xero uses OAuth 2.0. The API base is https://api.xero.com/api.xro/2.0/. Endpoints include Invoices, Contacts, Payments, and BankTransactions. Connections are tenant-specific—multi-tenant apps must handle organization switching. Rate limits: 60 calls per minute per organization. ## PostgreSQL Best Practices Use connection pooling (PgBouncer) for web applications. Index foreign keys and frequently queried columns. Avoid N+1 queries—use JOINs or batch loading. For large tables, consider partitioning by date. Always use parameterized queries to prevent SQL injection. ## Redis Caching Patterns Use Redis for session storage, rate limiting, and cache-aside patterns. Set TTLs on cached data to prevent stale reads. Consider Redis Cluster for high availability. Monitor memory usage—Redis holds everything in RAM. ## HubSpot CRM Integration HubSpot offers a REST API and webhooks for real-time sync. Authentication uses private apps (access token) or OAuth for public apps. The CRM API covers contacts, companies, deals, and tickets. Use the Search API for complex queries. Webhook subscriptions require a valid endpoint that responds to verification challenges. ## Xero Accounting Integration Xero uses OAuth 2.0. The API base is https://api.xero.com/api.xro/2.0/. Endpoints include Invoices, Contacts, Payments, and BankTransactions. Connections are tenant-specific—multi-tenant apps must handle organization switching. Rate limits: 60 calls per minute per organization. ## PostgreSQL Best Practices Use connection pooling (PgBouncer) for web applications. Index foreign keys and frequently queried columns. Avoid N+1 queries—use JOINs or batch loading. For large tables, consider partitioning by date. Always use parameterized queries to prevent SQL injection. ## Redis Caching Patterns Use Redis for session storage, rate limiting, and cache-aside patterns. Set TTLs on cached data to prevent stale reads. Consider Redis Cluster for high availability. Monitor memory usage—Redis holds everything in RAM. ## HubSpot CRM Integration HubSpot offers a REST API and webhooks for real-time sync. Authentication uses private apps (access token) or OAuth for public apps. The CRM API covers contacts, companies, deals, and tickets. Use the Search API for complex queries. Webhook subscriptions require a valid endpoint that responds to verification challenges. ## Xero Accounting Integration Xero uses OAuth 2.0. The API base is https://api.xero.com/api.xro/2.0/. Endpoints include Invoices, Contacts, Payments, and BankTransactions. Connections are tenant-specific—multi-tenant apps must handle organization switching. Rate limits: 60 calls per minute per organization. ## PostgreSQL Best Practices Use connection pooling (PgBouncer) for web applications. Index foreign keys and frequently queried columns. Avoid N+1 queries—use JOINs or batch loading. For large tables, consider partitioning by date. Always use parameterized queries to prevent SQL injection. ## Redis Caching Patterns Use Redis for session storage, rate limiting, and cache-aside patterns. Set TTLs on cached data to prevent stale reads. Consider Redis Cluster for high availability. Monitor memory usage—Redis holds everything in RAM. ## HubSpot CRM Integration HubSpot offers a REST API and webhooks for real-time sync. Authentication uses private apps (access token) or OAuth for public apps. The CRM API covers contacts, companies, deals, and tickets. Use the Search API for complex queries. Webhook subscriptions require a valid endpoint that responds to verification challenges. ## Xero Accounting Integration Xero uses OAuth 2.0. The API base is https://api.xero.com/api.xro/2.0/. Endpoints include Invoices, Contacts, Payments, and BankTransactions. Connections are tenant-specific—multi-tenant apps must handle organization switching. Rate limits: 60 calls per minute per organization. ## PostgreSQL Best Practices Use connection pooling (PgBouncer) for web applications. Index foreign keys and frequently queried columns. Avoid N+1 queries—use JOINs or batch loading. For large tables, consider partitioning by date. Always use parameterized queries to prevent SQL injection. ## Redis Caching Patterns Use Redis for session storage, rate limiting, and cache-aside patterns. Set TTLs on cached data to prevent stale reads. Consider Redis Cluster for high availability. Monitor memory usage—Redis holds everything in RAM. ## HubSpot CRM Integration HubSpot offers a REST API and webhooks for real-time sync. Authentication uses private apps (access token) or OAuth for public apps. The CRM API covers contacts, companies, deals, and tickets. Use the Search API for complex queries. Webhook subscriptions require a valid endpoint that responds to verification challenges. ## Xero Accounting Integration Xero uses OAuth 2.0. The API base is https://api.xero.com/api.xro/2.0/. Endpoints include Invoices, Contacts, Payments, and BankTransactions. Connections are tenant-specific—multi-tenant apps must handle organization switching. Rate limits: 60 calls per minute per organization. ## PostgreSQL Best Practices Use connection pooling (PgBouncer) for web applications. Index foreign keys and frequently queried columns. Avoid N+1 queries—use JOINs or batch loading. For large tables, consider partitioning by date. Always use parameterized queries to prevent SQL injection. ## Redis Caching Patterns Use Redis for session storage, rate limiting, and cache-aside patterns. Set TTLs on cached data to prevent stale reads. Consider Redis Cluster for high availability. Monitor memory usage—Redis holds everything in RAM. ## HubSpot CRM Integration HubSpot offers a REST API and webhooks for real-time sync. Authentication uses private apps (access token) or OAuth for public apps. The CRM API covers contacts, companies, deals, and tickets. Use the Search API for complex queries. Webhook subscriptions require a valid endpoint that responds to verification challenges. ## Xero Accounting Integration Xero uses OAuth 2.0. The API base is https://api.xero.com/api.xro/2.0/. Endpoints include Invoices, Contacts, Payments, and BankTransactions. Connections are tenant-specific—multi-tenant apps must handle organization switching. Rate limits: 60 calls per minute per organization. ## PostgreSQL Best Practices Use connection pooling (PgBouncer) for web applications. Index foreign keys and frequently queried columns. Avoid N+1 queries—use JOINs or batch loading. For large tables, consider partitioning by date. Always use parameterized queries to prevent SQL injection. ## Redis Caching Patterns Use Redis for session storage, rate limiting, and cache-aside patterns. Set TTLs on cached data to prevent stale reads. Consider Redis Cluster for high availability. Monitor memory usage—Redis holds everything in RAM. ## HubSpot CRM Integration HubSpot offers a REST API and webhooks for real-time sync. Authentication uses private apps (access token) or OAuth for public apps. The CRM API covers contacts, companies, deals, and tickets. Use the Search API for complex queries. Webhook subscriptions require a valid endpoint that responds to verification challenges. ## Xero Accounting Integration Xero uses OAuth 2.0. The API base is https://api.xero.com/api.xro/2.0/. Endpoints include Invoices, Contacts, Payments, and BankTransactions. Connections are tenant-specific—multi-tenant apps must handle organization switching. Rate limits: 60 calls per minute per organization. ## PostgreSQL Best Practices Use connection pooling (PgBouncer) for web applications. Index foreign keys and frequently queried columns. Avoid N+1 queries—use JOINs or batch loading. For large tables, consider partitioning by date. Always use parameterized queries to prevent SQL injection. ## Redis Caching Patterns Use Redis for session storage, rate limiting, and cache-aside patterns. Set TTLs on cached data to prevent stale reads. Consider Redis Cluster for high availability. Monitor memory usage—Redis holds everything in RAM. ## HubSpot CRM Integration HubSpot offers a REST API and webhooks for real-time sync. Authentication uses private apps (access token) or OAuth for public apps. The CRM API covers contacts, companies, deals, and tickets. Use the Search API for complex queries. Webhook subscriptions require a valid endpoint that responds to verification challenges. ## Xero Accounting Integration Xero uses OAuth 2.0. The API base is https://api.xero.com/api.xro/2.0/. Endpoints include Invoices, Contacts, Payments, and BankTransactions. Connections are tenant-specific—multi-tenant apps must handle organization switching. Rate limits: 60 calls per minute per organization. ## PostgreSQL Best Practices Use connection pooling (PgBouncer) for web applications. Index foreign keys and frequently queried columns. Avoid N+1 queries—use JOINs or batch loading. For large tables, consider partitioning by date. Always use parameterized queries to prevent SQL injection. ## Redis Caching Patterns Use Redis for session storage, rate limiting, and cache-aside patterns. Set TTLs on cached data to prevent stale reads. Consider Redis Cluster for high availability. Monitor memory usage—Redis holds everything in RAM. ## HubSpot CRM Integration HubSpot offers a REST API and webhooks for real-time sync. Authentication uses private apps (access token) or OAuth for public apps. The CRM API covers contacts, companies, deals, and tickets. Use the Search API for complex queries. Webhook subscriptions require a valid endpoint that responds to verification challenges. ## Xero Accounting Integration Xero uses OAuth 2.0. The API base is https://api.xero.com/api.xro/2.0/. Endpoints include Invoices, Contacts, Payments, and BankTransactions. Connections are tenant-specific—multi-tenant apps must handle organization switching. Rate limits: 60 calls per minute per organization. ## PostgreSQL Best Practices Use connection pooling (PgBouncer) for web applications. Index foreign keys and frequently queried columns. Avoid N+1 queries—use JOINs or batch loading. For large tables, consider partitioning by date. Always use parameterized queries to prevent SQL injection. ## Redis Caching Patterns Use Redis for session storage, rate limiting, and cache-aside patterns. Set TTLs on cached data to prevent stale reads. Consider Redis Cluster for high availability. Monitor memory usage—Redis holds everything in RAM. ## HubSpot CRM Integration HubSpot offers a REST API and webhooks for real-time sync. Authentication uses private apps (access token) or OAuth for public apps. The CRM API covers contacts, companies, deals, and tickets. Use the Search API for complex queries. Webhook subscriptions require a valid endpoint that responds to verification challenges. ## Xero Accounting Integration Xero uses OAuth 2.0. The API base is https://api.xero.com/api.xro/2.0/. Endpoints include Invoices, Contacts, Payments, and BankTransactions. Connections are tenant-specific—multi-tenant apps must handle organization switching. Rate limits: 60 calls per minute per organization. ## PostgreSQL Best Practices Use connection pooling (PgBouncer) for web applications. Index foreign keys and frequently queried columns. Avoid N+1 queries—use JOINs or batch loading. For large tables, consider partitioning by date. Always use parameterized queries to prevent SQL injection. ## Redis Caching Patterns Use Redis for session storage, rate limiting, and cache-aside patterns. Set TTLs on cached data to prevent stale reads. Consider Redis Cluster for high availability. Monitor memory usage—Redis holds everything in RAM. ## HubSpot CRM Integration HubSpot offers a REST API and webhooks for real-time sync. Authentication uses private apps (access token) or OAuth for public apps. The CRM API covers contacts, companies, deals, and tickets. Use the Search API for complex queries. Webhook subscriptions require a valid endpoint that responds to verification challenges. ## Xero Accounting Integration Xero uses OAuth 2.0. The API base is https://api.xero.com/api.xro/2.0/. Endpoints include Invoices, Contacts, Payments, and BankTransactions. Connections are tenant-specific—multi-tenant apps must handle organization switching. Rate limits: 60 calls per minute per organization. ## PostgreSQL Best Practices Use connection pooling (PgBouncer) for web applications. Index foreign keys and frequently queried columns. Avoid N+1 queries—use JOINs or batch loading. For large tables, consider partitioning by date. Always use parameterized queries to prevent SQL injection. ## Redis Caching Patterns Use Redis for session storage, rate limiting, and cache-aside patterns. Set TTLs on cached data to prevent stale reads. Consider Redis Cluster for high availability. Monitor memory usage—Redis holds everything in RAM. ## HubSpot CRM Integration HubSpot offers a REST API and webhooks for real-time sync. Authentication uses private apps (access token) or OAuth for public apps. The CRM API covers contacts, companies, deals, and tickets. Use the Search API for complex queries. Webhook subscriptions require a valid endpoint that responds to verification challenges. ## Xero Accounting Integration Xero uses OAuth 2.0. The API base is https://api.xero.com/api.xro/2.0/. Endpoints include Invoices, Contacts, Payments, and BankTransactions. Connections are tenant-specific—multi-tenant apps must handle organization switching. Rate limits: 60 calls per minute per organization. ## PostgreSQL Best Practices Use connection pooling (PgBouncer) for web applications. Index foreign keys and frequently queried columns. Avoid N+1 queries—use JOINs or batch loading. For large tables, consider partitioning by date. Always use parameterized queries to prevent SQL injection. ## Redis Caching Patterns Use Redis for session storage, rate limiting, and cache-aside patterns. Set TTLs on cached data to prevent stale reads. Consider Redis Cluster for high availability. Monitor memory usage—Redis holds everything in RAM. ## HubSpot CRM Integration HubSpot offers a REST API and webhooks for real-time sync. Authentication uses private apps (access token) or OAuth for public apps. The CRM API covers contacts, companies, deals, and tickets. Use the Search API for complex queries. Webhook subscriptions require a valid endpoint that responds to verification challenges. ## Xero Accounting Integration Xero uses OAuth 2.0. The API base is https://api.xero.com/api.xro/2.0/. Endpoints include Invoices, Contacts, Payments, and BankTransactions. Connections are tenant-specific—multi-tenant apps must handle organization switching. Rate limits: 60 calls per minute per organization. ## PostgreSQL Best Practices Use connection pooling (PgBouncer) for web applications. Index foreign keys and frequently queried columns. Avoid N+1 queries—use JOINs or batch loading. For large tables, consider partitioning by date. Always use parameterized queries to prevent SQL injection. ## Redis Caching Patterns Use Redis for session storage, rate limiting, and cache-aside patterns. Set TTLs on cached data to prevent stale reads. Consider Redis Cluster for high availability. Monitor memory usage—Redis holds everything in RAM. ## HubSpot CRM Integration HubSpot offers a REST API and webhooks for real-time sync. Authentication uses private apps (access token) or OAuth for public apps. The CRM API covers contacts, companies, deals, and tickets. Use the Search API for complex queries. Webhook subscriptions require a valid endpoint that responds to verification challenges. ## Xero Accounting Integration Xero uses OAuth 2.0. The API base is https://api.xero.com/api.xro/2.0/. Endpoints include Invoices, Contacts, Payments, and BankTransactions. Connections are tenant-specific—multi-tenant apps must handle organization switching. Rate limits: 60 calls per minute per organization. ## PostgreSQL Best Practices Use connection pooling (PgBouncer) for web applications. Index foreign keys and frequently queried columns. Avoid N+1 queries—use JOINs or batch loading. For large tables, consider partitioning by date. Always use parameterized queries to prevent SQL injection. ## Redis Caching Patterns Use Redis for session storage, rate limiting, and cache-aside patterns. Set TTLs on cached data to prevent stale reads. Consider Redis Cluster for high availability. Monitor memory usage—Redis holds everything in RAM. ## HubSpot CRM Integration HubSpot offers a REST API and webhooks for real-time sync. Authentication uses private apps (access token) or OAuth for public apps. The CRM API covers contacts, companies, deals, and tickets. Use the Search API for complex queries. Webhook subscriptions require a valid endpoint that responds to verification challenges. ## Xero Accounting Integration Xero uses OAuth 2.0. The API base is https://api.xero.com/api.xro/2.0/. Endpoints include Invoices, Contacts, Payments, and BankTransactions. Connections are tenant-specific—multi-tenant apps must handle organization switching. Rate limits: 60 calls per minute per organization. ## PostgreSQL Best Practices Use connection pooling (PgBouncer) for web applications. Index foreign keys and frequently queried columns. Avoid N+1 queries—use JOINs or batch loading. For large tables, consider partitioning by date. Always use parameterized queries to prevent SQL injection. ## Redis Caching Patterns Use Redis for session storage, rate limiting, and cache-aside patterns. Set TTLs on cached data to prevent stale reads. Consider Redis Cluster for high availability. Monitor memory usage—Redis holds everything in RAM. ## HubSpot CRM Integration HubSpot offers a REST API and webhooks for real-time sync. Authentication uses private apps (access token) or OAuth for public apps. The CRM API covers contacts, companies, deals, and tickets. Use the Search API for complex queries. Webhook subscriptions require a valid endpoint that responds to verification challenges. ## Xero Accounting Integration Xero uses OAuth 2.0. The API base is https://api.xero.com/api.xro/2.0/. Endpoints include Invoices, Contacts, Payments, and BankTransactions. Connections are tenant-specific—multi-tenant apps must handle organization switching. Rate limits: 60 calls per minute per organization. ## PostgreSQL Best Practices Use connection pooling (PgBouncer) for web applications. Index foreign keys and frequently queried columns. Avoid N+1 queries—use JOINs or batch loading. For large tables, consider partitioning by date. Always use parameterized queries to prevent SQL injection. ## Redis Caching Patterns Use Redis for session storage, rate limiting, and cache-aside patterns. Set TTLs on cached data to prevent stale reads. Consider Redis Cluster for high availability. Monitor memory usage—Redis holds everything in RAM. ## HubSpot CRM Integration HubSpot offers a REST API and webhooks for real-time sync. Authentication uses private apps (access token) or OAuth for public apps. The CRM API covers contacts, companies, deals, and tickets. Use the Search API for complex queries. Webhook subscriptions require a valid endpoint that responds to verification challenges. ## Xero Accounting Integration Xero uses OAuth 2.0. The API base is https://api.xero.com/api.xro/2.0/. Endpoints include Invoices, Contacts, Payments, and BankTransactions. Connections are tenant-specific—multi-tenant apps must handle organization switching. Rate limits: 60 calls per minute per organization. ## PostgreSQL Best Practices Use connection pooling (PgBouncer) for web applications. Index foreign keys and frequently queried columns. Avoid N+1 queries—use JOINs or batch loading. For large tables, consider partitioning by date. Always use parameterized queries to prevent SQL injection. ## Redis Caching Patterns Use Redis for session storage, rate limiting, and cache-aside patterns. Set TTLs on cached data to prevent stale reads. Consider Redis Cluster for high availability. Monitor memory usage—Redis holds everything in RAM. ## HubSpot CRM Integration HubSpot offers a REST API and webhooks for real-time sync. Authentication uses private apps (access token) or OAuth for public apps. The CRM API covers contacts, companies, deals, and tickets. Use the Search API for complex queries. Webhook subscriptions require a valid endpoint that responds to verification challenges. ## Xero Accounting Integration Xero uses OAuth 2.0. The API base is https://api.xero.com/api.xro/2.0/. Endpoints include Invoices, Contacts, Payments, and BankTransactions. Connections are tenant-specific—multi-tenant apps must handle organization switching. Rate limits: 60 calls per minute per organization. ## PostgreSQL Best Practices Use connection pooling (PgBouncer) for web applications. Index foreign keys and frequently queried columns. Avoid N+1 queries—use JOINs or batch loading. For large tables, consider partitioning by date. Always use parameterized queries to prevent SQL injection. ## Redis Caching Patterns Use Redis for session storage, rate limiting, and cache-aside patterns. Set TTLs on cached data to prevent stale reads. Consider Redis Cluster for high availability. Monitor memory usage—Redis holds everything in RAM. ## HubSpot CRM Integration HubSpot offers a REST API and webhooks for real-time sync. Authentication uses private apps (access token) or OAuth for public apps. The CRM API covers contacts, companies, deals, and tickets. Use the Search API for complex queries. Webhook subscriptions require a valid endpoint that responds to verification challenges. ## Xero Accounting Integration Xero uses OAuth 2.0. The API base is https://api.xero.com/api.xro/2.0/. Endpoints include Invoices, Contacts, Payments, and BankTransactions. Connections are tenant-specific—multi-tenant apps must handle organization switching. Rate limits: 60 calls per minute per organization. ## PostgreSQL Best Practices Use connection pooling (PgBouncer) for web applications. Index foreign keys and frequently queried columns. Avoid N+1 queries—use JOINs or batch loading. For large tables, consider partitioning by date. Always use parameterized queries to prevent SQL injection. ## Redis Caching Patterns Use Redis for session storage, rate limiting, and cache-aside patterns. Set TTLs on cached data to prevent stale reads. Consider Redis Cluster for high availability. Monitor memory usage—Redis holds everything in RAM. ## HubSpot CRM Integration HubSpot offers a REST API and webhooks for real-time sync. Authentication uses private apps (access token) or OAuth for public apps. The CRM API covers contacts, companies, deals, and tickets. Use the Search API for complex queries. Webhook subscriptions require a valid endpoint that responds to verification challenges. ## Xero Accounting Integration Xero uses OAuth 2.0. The API base is https://api.xero.com/api.xro/2.0/. Endpoints include Invoices, Contacts, Payments, and BankTransactions. Connections are tenant-specific—multi-tenant apps must handle organization switching. Rate limits: 60 calls per minute per organization. ## PostgreSQL Best Practices Use connection pooling (PgBouncer) for web applications. Index foreign keys and frequently queried columns. Avoid N+1 queries—use JOINs or batch loading. For large tables, consider partitioning by date. Always use parameterized queries to prevent SQL injection. ## Redis Caching Patterns Use Redis for session storage, rate limiting, and cache-aside patterns. Set TTLs on cached data to prevent stale reads. Consider Redis Cluster for high availability. Monitor memory usage—Redis holds everything in RAM. ## HubSpot CRM Integration HubSpot offers a REST API and webhooks for real-time sync. Authentication uses private apps (access token) or OAuth for public apps. The CRM API covers contacts, companies, deals, and tickets. Use the Search API for complex queries. Webhook subscriptions require a valid endpoint that responds to verification challenges. ## Xero Accounting Integration Xero uses OAuth 2.0. The API base is https://api.xero.com/api.xro/2.0/. Endpoints include Invoices, Contacts, Payments, and BankTransactions. Connections are tenant-specific—multi-tenant apps must handle organization switching. Rate limits: 60 calls per minute per organization. ## PostgreSQL Best Practices Use connection pooling (PgBouncer) for web applications. Index foreign keys and frequently queried columns. Avoid N+1 queries—use JOINs or batch loading. For large tables, consider partitioning by date. Always use parameterized queries to prevent SQL injection. ## Redis Caching Patterns Use Redis for session storage, rate limiting, and cache-aside patterns. Set TTLs on cached data to prevent stale reads. Consider Redis Cluster for high availability. Monitor memory usage—Redis holds everything in RAM. ## HubSpot CRM Integration HubSpot offers a REST API and webhooks for real-time sync. Authentication uses private apps (access token) or OAuth for public apps. The CRM API covers contacts, companies, deals, and tickets. Use the Search API for complex queries. Webhook subscriptions require a valid endpoint that responds to verification challenges. ## Xero Accounting Integration Xero uses OAuth 2.0. The API base is https://api.xero.com/api.xro/2.0/. Endpoints include Invoices, Contacts, Payments, and BankTransactions. Connections are tenant-specific—multi-tenant apps must handle organization switching. Rate limits: 60 calls per minute per organization. ## PostgreSQL Best Practices Use connection pooling (PgBouncer) for web applications. Index foreign keys and frequently queried columns. Avoid N+1 queries—use JOINs or batch loading. For large tables, consider partitioning by date. Always use parameterized queries to prevent SQL injection. ## Redis Caching Patterns Use Redis for session storage, rate limiting, and cache-aside patterns. Set TTLs on cached data to prevent stale reads. Consider Redis Cluster for high availability. Monitor memory usage—Redis holds everything in RAM. ## HubSpot CRM Integration HubSpot offers a REST API and webhooks for real-time sync. Authentication uses private apps (access token) or OAuth for public apps. The CRM API covers contacts, companies, deals, and tickets. Use the Search API for complex queries. Webhook subscriptions require a valid endpoint that responds to verification challenges. ## Xero Accounting Integration Xero uses OAuth 2.0. The API base is https://api.xero.com/api.xro/2.0/. Endpoints include Invoices, Contacts, Payments, and BankTransactions. Connections are tenant-specific—multi-tenant apps must handle organization switching. Rate limits: 60 calls per minute per organization. ## PostgreSQL Best Practices Use connection pooling (PgBouncer) for web applications. Index foreign keys and frequently queried columns. Avoid N+1 queries—use JOINs or batch loading. For large tables, consider partitioning by date. Always use parameterized queries to prevent SQL injection. ## Redis Caching Patterns Use Redis for session storage, rate limiting, and cache-aside patterns. Set TTLs on cached data to prevent stale reads. Consider Redis Cluster for high availability. Monitor memory usage—Redis holds everything in RAM. ## HubSpot CRM Integration HubSpot offers a REST API and webhooks for real-time sync. Authentication uses private apps (access token) or OAuth for public apps. The CRM API covers contacts, companies, deals, and tickets. Use the Search API for complex queries. Webhook subscriptions require a valid endpoint that responds to verification challenges. ## Xero Accounting Integration Xero uses OAuth 2.0. The API base is https://api.xero.com/api.xro/2.0/. Endpoints include Invoices, Contacts, Payments, and BankTransactions. Connections are tenant-specific—multi-tenant apps must handle organization switching. Rate limits: 60 calls per minute per organization. ## PostgreSQL Best Practices Use connection pooling (PgBouncer) for web applications. Index foreign keys and frequently queried columns. Avoid N+1 queries—use JOINs or batch loading. For large tables, consider partitioning by date. Always use parameterized queries to prevent SQL injection. ## Redis Caching Patterns Use Redis for session storage, rate limiting, and cache-aside patterns. Set TTLs on cached data to prevent stale reads. Consider Redis Cluster for high availability. Monitor memory usage—Redis holds everything in RAM. ## HubSpot CRM Integration HubSpot offers a REST API and webhooks for real-time sync. Authentication uses private apps (access token) or OAuth for public apps. The CRM API covers contacts, companies, deals, and tickets. Use the Search API for complex queries. Webhook subscriptions require a valid endpoint that responds to verification challenges. ## Xero Accounting Integration Xero uses OAuth 2.0. The API base is https://api.xero.com/api.xro/2.0/. Endpoints include Invoices, Contacts, Payments, and BankTransactions. Connections are tenant-specific—multi-tenant apps must handle organization switching. Rate limits: 60 calls per minute per organization. ## PostgreSQL Best Practices Use connection pooling (PgBouncer) for web applications. Index foreign keys and frequently queried columns. Avoid N+1 queries—use JOINs or batch loading. For large tables, consider partitioning by date. Always use parameterized queries to prevent SQL injection. ## Redis Caching Patterns Use Redis for session storage, rate limiting, and cache-aside patterns. Set TTLs on cached data to prevent stale reads. Consider Redis Cluster for high availability. Monitor memory usage—Redis holds everything in RAM. ## HubSpot CRM Integration HubSpot offers a REST API and webhooks for real-time sync. Authentication uses private apps (access token) or OAuth for public apps. The CRM API covers contacts, companies, deals, and tickets. Use the Search API for complex queries. Webhook subscriptions require a valid endpoint that responds to verification challenges. ## Xero Accounting Integration Xero uses OAuth 2.0. The API base is https://api.xero.com/api.xro/2.0/. Endpoints include Invoices, Contacts, Payments, and BankTransactions. Connections are tenant-specific—multi-tenant apps must handle organization switching. Rate limits: 60 calls per minute per organization. ## PostgreSQL Best Practices Use connection pooling (PgBouncer) for web applications. Index foreign keys and frequently queried columns. Avoid N+1 queries—use JOINs or batch loading. For large tables, consider partitioning by date. Always use parameterized queries to prevent SQL injection. ## Redis Caching Patterns Use Redis for session storage, rate limiting, and cache-aside patterns. Set TTLs on cached data to prevent stale reads. Consider Redis Cluster for high availability. Monitor memory usage—Redis holds everything in RAM. ## HubSpot CRM Integration HubSpot offers a REST API and webhooks for real-time sync. Authentication uses private apps (access token) or OAuth for public apps. The CRM API covers contacts, companies, deals, and tickets. Use the Search API for complex queries. Webhook subscriptions require a valid endpoint that responds to verification challenges. ## Xero Accounting Integration Xero uses OAuth 2.0. The API base is https://api.xero.com/api.xro/2.0/. Endpoints include Invoices, Contacts, Payments, and BankTransactions. Connections are tenant-specific—multi-tenant apps must handle organization switching. Rate limits: 60 calls per minute per organization. ## PostgreSQL Best Practices Use connection pooling (PgBouncer) for web applications. Index foreign keys and frequently queried columns. Avoid N+1 queries—use JOINs or batch loading. For large tables, consider partitioning by date. Always use parameterized queries to prevent SQL injection. ## Redis Caching Patterns Use Redis for session storage, rate limiting, and cache-aside patterns. Set TTLs on cached data to prevent stale reads. Consider Redis Cluster for high availability. Monitor memory usage—Redis holds everything in RAM. ## HubSpot CRM Integration HubSpot offers a REST API and webhooks for real-time sync. Authentication uses private apps (access token) or OAuth for public apps. The CRM API covers contacts, companies, deals, and tickets. Use the Search API for complex queries. Webhook subscriptions require a valid endpoint that responds to verification challenges. ## Xero Accounting Integration Xero uses OAuth 2.0. The API base is https://api.xero.com/api.xro/2.0/. Endpoints include Invoices, Contacts, Payments, and BankTransactions. Connections are tenant-specific—multi-tenant apps must handle organization switching. Rate limits: 60 calls per minute per organization. ## PostgreSQL Best Practices Use connection pooling (PgBouncer) for web applications. Index foreign keys and frequently queried columns. Avoid N+1 queries—use JOINs or batch loading. For large tables, consider partitioning by date. Always use parameterized queries to prevent SQL injection. ## Redis Caching Patterns Use Redis for session storage, rate limiting, and cache-aside patterns. Set TTLs on cached data to prevent stale reads. Consider Redis Cluster for high availability. Monitor memory usage—Redis holds everything in RAM. ## HubSpot CRM Integration HubSpot offers a REST API and webhooks for real-time sync. Authentication uses private apps (access token) or OAuth for public apps. The CRM API covers contacts, companies, deals, and tickets. Use the Search API for complex queries. Webhook subscriptions require a valid endpoint that responds to verification challenges. ## Xero Accounting Integration Xero uses OAuth 2.0. The API base is https://api.xero.com/api.xro/2.0/. Endpoints include Invoices, Contacts, Payments, and BankTransactions. Connections are tenant-specific—multi-tenant apps must handle organization switching. Rate limits: 60 calls per minute per organization. ## PostgreSQL Best Practices Use connection pooling (PgBouncer) for web applications. Index foreign keys and frequently queried columns. Avoid N+1 queries—use JOINs or batch loading. For large tables, consider partitioning by date. Always use parameterized queries to prevent SQL injection. ## Redis Caching Patterns Use Redis for session storage, rate limiting, and cache-aside patterns. Set TTLs on cached data to prevent stale reads. Consider Redis Cluster for high availability. Monitor memory usage—Redis holds everything in RAM. ## HubSpot CRM Integration HubSpot offers a REST API and webhooks for real-time sync. Authentication uses private apps (access token) or OAuth for public apps. The CRM API covers contacts, companies, deals, and tickets. Use the Search API for complex queries. Webhook subscriptions require a valid endpoint that responds to verification challenges. ## Xero Accounting Integration Xero uses OAuth 2.0. The API base is https://api.xero.com/api.xro/2.0/. Endpoints include Invoices, Contacts, Payments, and BankTransactions. Connections are tenant-specific—multi-tenant apps must handle organization switching. Rate limits: 60 calls per minute per organization. ## PostgreSQL Best Practices Use connection pooling (PgBouncer) for web applications. Index foreign keys and frequently queried columns. Avoid N+1 queries—use JOINs or batch loading. For large tables, consider partitioning by date. Always use parameterized queries to prevent SQL injection. ## Redis Caching Patterns Use Redis for session storage, rate limiting, and cache-aside patterns. Set TTLs on cached data to prevent stale reads. Consider Redis Cluster for high availability. Monitor memory usage—Redis holds everything in RAM. ## HubSpot CRM Integration HubSpot offers a REST API and webhooks for real-time sync. Authentication uses private apps (access token) or OAuth for public apps. The CRM API covers contacts, companies, deals, and tickets. Use the Search API for complex queries. Webhook subscriptions require a valid endpoint that responds to verification challenges. ## Xero Accounting Integration Xero uses OAuth 2.0. The API base is https://api.xero.com/api.xro/2.0/. Endpoints include Invoices, Contacts, Payments, and BankTransactions. Connections are tenant-specific—multi-tenant apps must handle organization switching. Rate limits: 60 calls per minute per organization. ## PostgreSQL Best Practices Use connection pooling (PgBouncer) for web applications. Index foreign keys and frequently queried columns. Avoid N+1 queries—use JOINs or batch loading. For large tables, consider partitioning by date. Always use parameterized queries to prevent SQL injection. ## Redis Caching Patterns Use Redis for session storage, rate limiting, and cache-aside patterns. Set TTLs on cached data to prevent stale reads. Consider Redis Cluster for high availability. Monitor memory usage—Redis holds everything in RAM. ## HubSpot CRM Integration HubSpot offers a REST API and webhooks for real-time sync. Authentication uses private apps (access token) or OAuth for public apps. The CRM API covers contacts, companies, deals, and tickets. Use the Search API for complex queries. Webhook subscriptions require a valid endpoint that responds to verification challenges. ## Xero Accounting Integration Xero uses OAuth 2.0. The API base is https://api.xero.com/api.xro/2.0/. Endpoints include Invoices, Contacts, Payments, and BankTransactions. Connections are tenant-specific—multi-tenant apps must handle organization switching. Rate limits: 60 calls per minute per organization. ## PostgreSQL Best Practices Use connection pooling (PgBouncer) for web applications. Index foreign keys and frequently queried columns. Avoid N+1 queries—use JOINs or batch loading. For large tables, consider partitioning by date. Always use parameterized queries to prevent SQL injection. ## Redis Caching Patterns Use Redis for session storage, rate limiting, and cache-aside patterns. Set TTLs on cached data to prevent stale reads. Consider Redis Cluster for high availability. Monitor memory usage—Redis holds everything in RAM. ## HubSpot CRM Integration HubSpot offers a REST API and webhooks for real-time sync. Authentication uses private apps (access token) or OAuth for public apps. The CRM API covers contacts, companies, deals, and tickets. Use the Search API for complex queries. Webhook subscriptions require a valid endpoint that responds to verification challenges. ## Xero Accounting Integration Xero uses OAuth 2.0. The API base is https://api.xero.com/api.xro/2.0/. Endpoints include Invoices, Contacts, Payments, and BankTransactions. Connections are tenant-specific—multi-tenant apps must handle organization switching. Rate limits: 60 calls per minute per organization. ## PostgreSQL Best Practices Use connection pooling (PgBouncer) for web applications. Index foreign keys and frequently queried columns. Avoid N+1 queries—use JOINs or batch loading. For large tables, consider partitioning by date. Always use parameterized queries to prevent SQL injection. ## Redis Caching Patterns Use Redis for session storage, rate limiting, and cache-aside patterns. Set TTLs on cached data to prevent stale reads. Consider Redis Cluster for high availability. Monitor memory usage—Redis holds everything in RAM. ## HubSpot CRM Integration HubSpot offers a REST API and webhooks for real-time sync. Authentication uses private apps (access token) or OAuth for public apps. The CRM API covers contacts, companies, deals, and tickets. Use the Search API for complex queries. Webhook subscriptions require a valid endpoint that responds to verification challenges. ## Xero Accounting Integration Xero uses OAuth 2.0. The API base is https://api.xero.com/api.xro/2.0/. Endpoints include Invoices, Contacts, Payments, and BankTransactions. Connections are tenant-specific—multi-tenant apps must handle organization switching. Rate limits: 60 calls per minute per organization. ## PostgreSQL Best Practices Use connection pooling (PgBouncer) for web applications. Index foreign keys and frequently queried columns. Avoid N+1 queries—use JOINs or batch loading. For large tables, consider partitioning by date. Always use parameterized queries to prevent SQL injection. ## Redis Caching Patterns Use Redis for session storage, rate limiting, and cache-aside patterns. Set TTLs on cached data to prevent stale reads. Consider Redis Cluster for high availability. Monitor memory usage—Redis holds everything in RAM. ## HubSpot CRM Integration HubSpot offers a REST API and webhooks for real-time sync. Authentication uses private apps (access token) or OAuth for public apps. The CRM API covers contacts, companies, deals, and tickets. Use the Search API for complex queries. Webhook subscriptions require a valid endpoint that responds to verification challenges. ## Xero Accounting Integration Xero uses OAuth 2.0. The API base is https://api.xero.com/api.xro/2.0/. Endpoints include Invoices, Contacts, Payments, and BankTransactions. Connections are tenant-specific—multi-tenant apps must handle organization switching. Rate limits: 60 calls per minute per organization. ## PostgreSQL Best Practices Use connection pooling (PgBouncer) for web applications. Index foreign keys and frequently queried columns. Avoid N+1 queries—use JOINs or batch loading. For large tables, consider partitioning by date. Always use parameterized queries to prevent SQL injection. ## Redis Caching Patterns Use Redis for session storage, rate limiting, and cache-aside patterns. Set TTLs on cached data to prevent stale reads. Consider Redis Cluster for high availability. Monitor memory usage—Redis holds everything in RAM. ## HubSpot CRM Integration HubSpot offers a REST API and webhooks for real-time sync. Authentication uses private apps (access token) or OAuth for public apps. The CRM API covers contacts, companies, deals, and tickets. Use the Search API for complex queries. Webhook subscriptions require a valid endpoint that responds to verification challenges. ## Xero Accounting Integration Xero uses OAuth 2.0. The API base is https://api.xero.com/api.xro/2.0/. Endpoints include Invoices, Contacts, Payments, and BankTransactions. Connections are tenant-specific—multi-tenant apps must handle organization switching. Rate limits: 60 calls per minute per organization. ## PostgreSQL Best Practices Use connection pooling (PgBouncer) for web applications. Index foreign keys and frequently queried columns. Avoid N+1 queries—use JOINs or batch loading. For large tables, consider partitioning by date. Always use parameterized queries to prevent SQL injection. ## Redis Caching Patterns Use Redis for session storage, rate limiting, and cache-aside patterns. Set TTLs on cached data to prevent stale reads. Consider Redis Cluster for high availability. Monitor memory usage—Redis holds everything in RAM. ## HubSpot CRM Integration HubSpot offers a REST API and webhooks for real-time sync. Authentication uses private apps (access token) or OAuth for public apps. The CRM API covers contacts, companies, deals, and tickets. Use the Search API for complex queries. Webhook subscriptions require a valid endpoint that responds to verification challenges. ## Xero Accounting Integration Xero uses OAuth 2.0. The API base is https://api.xero.com/api.xro/2.0/. Endpoints include Invoices, Contacts, Payments, and BankTransactions. Connections are tenant-specific—multi-tenant apps must handle organization switching. Rate limits: 60 calls per minute per organization. ## PostgreSQL Best Practices Use connection pooling (PgBouncer) for web applications. Index foreign keys and frequently queried columns. Avoid N+1 queries—use JOINs or batch loading. For large tables, consider partitioning by date. Always use parameterized queries to prevent SQL injection. ## Redis Caching Patterns Use Redis for session storage, rate limiting, and cache-aside patterns. Set TTLs on cached data to prevent stale reads. Consider Redis Cluster for high availability. Monitor memory usage—Redis holds everything in RAM. ## HubSpot CRM Integration HubSpot offers a REST API and webhooks for real-time sync. Authentication uses private apps (access token) or OAuth for public apps. The CRM API covers contacts, companies, deals, and tickets. Use the Search API for complex queries. Webhook subscriptions require a valid endpoint that responds to verification challenges. ## Xero Accounting Integration Xero uses OAuth 2.0. The API base is https://api.xero.com/api.xro/2.0/. Endpoints include Invoices, Contacts, Payments, and BankTransactions. Connections are tenant-specific—multi-tenant apps must handle organization switching. Rate limits: 60 calls per minute per organization. ## PostgreSQL Best Practices Use connection pooling (PgBouncer) for web applications. Index foreign keys and frequently queried columns. Avoid N+1 queries—use JOINs or batch loading. For large tables, consider partitioning by date. Always use parameterized queries to prevent SQL injection. ## Redis Caching Patterns Use Redis for session storage, rate limiting, and cache-aside patterns. Set TTLs on cached data to prevent stale reads. Consider Redis Cluster for high availability. Monitor memory usage—Redis holds everything in RAM. ## HubSpot CRM Integration HubSpot offers a REST API and webhooks for real-time sync. Authentication uses private apps (access token) or OAuth for public apps. The CRM API covers contacts, companies, deals, and tickets. Use the Search API for complex queries. Webhook subscriptions require a valid endpoint that responds to verification challenges. ## Xero Accounting Integration Xero uses OAuth 2.0. The API base is https://api.xero.com/api.xro/2.0/. Endpoints include Invoices, Contacts, Payments, and BankTransactions. Connections are tenant-specific—multi-tenant apps must handle organization switching. Rate limits: 60 calls per minute per organization. ## PostgreSQL Best Practices Use connection pooling (PgBouncer) for web applications. Index foreign keys and frequently queried columns. Avoid N+1 queries—use JOINs or batch loading. For large tables, consider partitioning by date. Always use parameterized queries to prevent SQL injection. ## Redis Caching Patterns Use Redis for session storage, rate limiting, and cache-aside patterns. Set TTLs on cached data to prevent stale reads. Consider Redis Cluster for high availability. Monitor memory usage—Redis holds everything in RAM. ## HubSpot CRM Integration HubSpot offers a REST API and webhooks for real-time sync. Authentication uses private apps (access token) or OAuth for public apps. The CRM API covers contacts, companies, deals, and tickets. Use the Search API for complex queries. Webhook subscriptions require a valid endpoint that responds to verification challenges. ## Xero Accounting Integration Xero uses OAuth 2.0. The API base is https://api.xero.com/api.xro/2.0/. Endpoints include Invoices, Contacts, Payments, and BankTransactions. Connections are tenant-specific—multi-tenant apps must handle organization switching. Rate limits: 60 calls per minute per organization. ## PostgreSQL Best Practices Use connection pooling (PgBouncer) for web applications. Index foreign keys and frequently queried columns. Avoid N+1 queries—use JOINs or batch loading. For large tables, consider partitioning by date. Always use parameterized queries to prevent SQL injection. ## Redis Caching Patterns Use Redis for session storage, rate limiting, and cache-aside patterns. Set TTLs on cached data to prevent stale reads. Consider Redis Cluster for high availability. Monitor memory usage—Redis holds everything in RAM. ## HubSpot CRM Integration HubSpot offers a REST API and webhooks for real-time sync. Authentication uses private apps (access token) or OAuth for public apps. The CRM API covers contacts, companies, deals, and tickets. Use the Search API for complex queries. Webhook subscriptions require a valid endpoint that responds to verification challenges. ## Xero Accounting Integration Xero uses OAuth 2.0. The API base is https://api.xero.com/api.xro/2.0/. Endpoints include Invoices, Contacts, Payments, and BankTransactions. Connections are tenant-specific—multi-tenant apps must handle organization switching. Rate limits: 60 calls per minute per organization. ## PostgreSQL Best Practices Use connection pooling (PgBouncer) for web applications. Index foreign keys and frequently queried columns. Avoid N+1 queries—use JOINs or batch loading. For large tables, consider partitioning by date. Always use parameterized queries to prevent SQL injection. ## Redis Caching Patterns Use Redis for session storage, rate limiting, and cache-aside patterns. Set TTLs on cached data to prevent stale reads. Consider Redis Cluster for high availability. Monitor memory usage—Redis holds everything in RAM. ## HubSpot CRM Integration HubSpot offers a REST API and webhooks for real-time sync. Authentication uses private apps (access token) or OAuth for public apps. The CRM API covers contacts, companies, deals, and tickets. Use the Search API for complex queries. Webhook subscriptions require a valid endpoint that responds to verification challenges. ## Xero Accounting Integration Xero uses OAuth 2.0. The API base is https://api.xero.com/api.xro/2.0/. Endpoints include Invoices, Contacts, Payments, and BankTransactions. Connections are tenant-specific—multi-tenant apps must handle organization switching. Rate limits: 60 calls per minute per organization. ## PostgreSQL Best Practices Use connection pooling (PgBouncer) for web applications. Index foreign keys and frequently queried columns. Avoid N+1 queries—use JOINs or batch loading. For large tables, consider partitioning by date. Always use parameterized queries to prevent SQL injection. ## Redis Caching Patterns Use Redis for session storage, rate limiting, and cache-aside patterns. Set TTLs on cached data to prevent stale reads. Consider Redis Cluster for high availability. Monitor memory usage—Redis holds everything in RAM. ## HubSpot CRM Integration HubSpot offers a REST API and webhooks for real-time sync. Authentication uses private apps (access token) or OAuth for public apps. The CRM API covers contacts, companies, deals, and tickets. Use the Search API for complex queries. Webhook subscriptions require a valid endpoint that responds to verification challenges. ## Xero Accounting Integration Xero uses OAuth 2.0. The API base is https://api.xero.com/api.xro/2.0/. Endpoints include Invoices, Contacts, Payments, and BankTransactions. Connections are tenant-specific—multi-tenant apps must handle organization switching. Rate limits: 60 calls per minute per organization. ## PostgreSQL Best Practices Use connection pooling (PgBouncer) for web applications. Index foreign keys and frequently queried columns. Avoid N+1 queries—use JOINs or batch loading. For large tables, consider partitioning by date. Always use parameterized queries to prevent SQL injection. ## Redis Caching Patterns Use Redis for session storage, rate limiting, and cache-aside patterns. Set TTLs on cached data to prevent stale reads. Consider Redis Cluster for high availability. Monitor memory usage—Redis holds everything in RAM. ## HubSpot CRM Integration HubSpot offers a REST API and webhooks for real-time sync. Authentication uses private apps (access token) or OAuth for public apps. The CRM API covers contacts, companies, deals, and tickets. Use the Search API for complex queries. Webhook subscriptions require a valid endpoint that responds to verification challenges. ## Xero Accounting Integration Xero uses OAuth 2.0. The API base is https://api.xero.com/api.xro/2.0/. Endpoints include Invoices, Contacts, Payments, and BankTransactions. Connections are tenant-specific—multi-tenant apps must handle organization switching. Rate limits: 60 calls per minute per organization. ## PostgreSQL Best Practices Use connection pooling (PgBouncer) for web applications. Index foreign keys and frequently queried columns. Avoid N+1 queries—use JOINs or batch loading. For large tables, consider partitioning by date. Always use parameterized queries to prevent SQL injection. ## Redis Caching Patterns Use Redis for session storage, rate limiting, and cache-aside patterns. Set TTLs on cached data to prevent stale reads. Consider Redis Cluster for high availability. Monitor memory usage—Redis holds everything in RAM. ## HubSpot CRM Integration HubSpot offers a REST API and webhooks for real-time sync. Authentication uses private apps (access token) or OAuth for public apps. The CRM API covers contacts, companies, deals, and tickets. Use the Search API for complex queries. Webhook subscriptions require a valid endpoint that responds to verification challenges. ## Xero Accounting Integration Xero uses OAuth 2.0. The API base is https://api.xero.com/api.xro/2.0/. Endpoints include Invoices, Contacts, Payments, and BankTransactions. Connections are tenant-specific—multi-tenant apps must handle organization switching. Rate limits: 60 calls per minute per organization. ## PostgreSQL Best Practices Use connection pooling (PgBouncer) for web applications. Index foreign keys and frequently queried columns. Avoid N+1 queries—use JOINs or batch loading. For large tables, consider partitioning by date. Always use parameterized queries to prevent SQL injection. ## Redis Caching Patterns Use Redis for session storage, rate limiting, and cache-aside patterns. Set TTLs on cached data to prevent stale reads. Consider Redis Cluster for high availability. Monitor memory usage—Redis holds everything in RAM. ## HubSpot CRM Integration HubSpot offers a REST API and webhooks for real-time sync. Authentication uses private apps (access token) or OAuth for public apps. The CRM API covers contacts, companies, deals, and tickets. Use the Search API for complex queries. Webhook subscriptions require a valid endpoint that responds to verification challenges. ## Xero Accounting Integration Xero uses OAuth 2.0. The API base is https://api.xero.com/api.xro/2.0/. Endpoints include Invoices, Contacts, Payments, and BankTransactions. Connections are tenant-specific—multi-tenant apps must handle organization switching. Rate limits: 60 calls per minute per organization. ## PostgreSQL Best Practices Use connection pooling (PgBouncer) for web applications. Index foreign keys and frequently queried columns. Avoid N+1 queries—use JOINs or batch loading. For large tables, consider partitioning by date. Always use parameterized queries to prevent SQL injection. ## Redis Caching Patterns Use Redis for session storage, rate limiting, and cache-aside patterns. Set TTLs on cached data to prevent stale reads. Consider Redis Cluster for high availability. Monitor memory usage—Redis holds everything in RAM. ## HubSpot CRM Integration HubSpot offers a REST API and webhooks for real-time sync. Authentication uses private apps (access token) or OAuth for public apps. The CRM API covers contacts, companies, deals, and tickets. Use the Search API for complex queries. Webhook subscriptions require a valid endpoint that responds to verification challenges. ## Xero Accounting Integration Xero uses OAuth 2.0. The API base is https://api.xero.com/api.xro/2.0/. Endpoints include Invoices, Contacts, Payments, and BankTransactions. Connections are tenant-specific—multi-tenant apps must handle organization switching. Rate limits: 60 calls per minute per organization. ## PostgreSQL Best Practices Use connection pooling (PgBouncer) for web applications. Index foreign keys and frequently queried columns. Avoid N+1 queries—use JOINs or batch loading. For large tables, consider partitioning by date. Always use parameterized queries to prevent SQL injection. ## Redis Caching Patterns Use Redis for session storage, rate limiting, and cache-aside patterns. Set TTLs on cached data to prevent stale reads. Consider Redis Cluster for high availability. Monitor memory usage—Redis holds everything in RAM. ## HubSpot CRM Integration HubSpot offers a REST API and webhooks for real-time sync. Authentication uses private apps (access token) or OAuth for public apps. The CRM API covers contacts, companies, deals, and tickets. Use the Search API for complex queries. Webhook subscriptions require a valid endpoint that responds to verification challenges. ## Xero Accounting Integration Xero uses OAuth 2.0. The API base is https://api.xero.com/api.xro/2.0/. Endpoints include Invoices, Contacts, Payments, and BankTransactions. Connections are tenant-specific—multi-tenant apps must handle organization switching. Rate limits: 60 calls per minute per organization. ## PostgreSQL Best Practices Use connection pooling (PgBouncer) for web applications. Index foreign keys and frequently queried columns. Avoid N+1 queries—use JOINs or batch loading. For large tables, consider partitioning by date. Always use parameterized queries to prevent SQL injection. ## Redis Caching Patterns Use Redis for session storage, rate limiting, and cache-aside patterns. Set TTLs on cached data to prevent stale reads. Consider Redis Cluster for high availability. Monitor memory usage—Redis holds everything in RAM. ## HubSpot CRM Integration HubSpot offers a REST API and webhooks for real-time sync. Authentication uses private apps (access token) or OAuth for public apps. The CRM API covers contacts, companies, deals, and tickets. Use the Search API for complex queries. Webhook subscriptions require a valid endpoint that responds to verification challenges. ## Xero Accounting Integration Xero uses OAuth 2.0. The API base is https://api.xero.com/api.xro/2.0/. Endpoints include Invoices, Contacts, Payments, and BankTransactions. Connections are tenant-specific—multi-tenant apps must handle organization switching. Rate limits: 60 calls per minute per organization. ## PostgreSQL Best Practices Use connection pooling (PgBouncer) for web applications. Index foreign keys and frequently queried columns. Avoid N+1 queries—use JOINs or batch loading. For large tables, consider partitioning by date. Always use parameterized queries to prevent SQL injection. ## Redis Caching Patterns Use Redis for session storage, rate limiting, and cache-aside patterns. Set TTLs on cached data to prevent stale reads. Consider Redis Cluster for high availability. Monitor memory usage—Redis holds everything in RAM. ## HubSpot CRM Integration HubSpot offers a REST API and webhooks for real-time sync. Authentication uses private apps (access token) or OAuth for public apps. The CRM API covers contacts, companies, deals, and tickets. Use the Search API for complex queries. Webhook subscriptions require a valid endpoint that responds to verification challenges. ## Xero Accounting Integration Xero uses OAuth 2.0. The API base is https://api.xero.com/api.xro/2.0/. Endpoints include Invoices, Contacts, Payments, and BankTransactions. Connections are tenant-specific—multi-tenant apps must handle organization switching. Rate limits: 60 calls per minute per organization. ## PostgreSQL Best Practices Use connection pooling (PgBouncer) for web applications. Index foreign keys and frequently queried columns. Avoid N+1 queries—use JOINs or batch loading. For large tables, consider partitioning by date. Always use parameterized queries to prevent SQL injection. ## Redis Caching Patterns Use Redis for session storage, rate limiting, and cache-aside patterns. Set TTLs on cached data to prevent stale reads. Consider Redis Cluster for high availability. Monitor memory usage—Redis holds everything in RAM. ## HubSpot CRM Integration HubSpot offers a REST API and webhooks for real-time sync. Authentication uses private apps (access token) or OAuth for public apps. The CRM API covers contacts, companies, deals, and tickets. Use the Search API for complex queries. Webhook subscriptions require a valid endpoint that responds to verification challenges. ## Xero Accounting Integration Xero uses OAuth 2.0. The API base is https://api.xero.com/api.xro/2.0/. Endpoints include Invoices, Contacts, Payments, and BankTransactions. Connections are tenant-specific—multi-tenant apps must handle organization switching. Rate limits: 60 calls per minute per organization. ## PostgreSQL Best Practices Use connection pooling (PgBouncer) for web applications. Index foreign keys and frequently queried columns. Avoid N+1 queries—use JOINs or batch loading. For large tables, consider partitioning by date. Always use parameterized queries to prevent SQL injection. ## Redis Caching Patterns Use Redis for session storage, rate limiting, and cache-aside patterns. Set TTLs on cached data to prevent stale reads. Consider Redis Cluster for high availability. Monitor memory usage—Redis holds everything in RAM. ## HubSpot CRM Integration HubSpot offers a REST API and webhooks for real-time sync. Authentication uses private apps (access token) or OAuth for public apps. The CRM API covers contacts, companies, deals, and tickets. Use the Search API for complex queries. Webhook subscriptions require a valid endpoint that responds to verification challenges. ## Xero Accounting Integration Xero uses OAuth 2.0. The API base is https://api.xero.com/api.xro/2.0/. Endpoints include Invoices, Contacts, Payments, and BankTransactions. Connections are tenant-specific—multi-tenant apps must handle organization switching. Rate limits: 60 calls per minute per organization. ## PostgreSQL Best Practices Use connection pooling (PgBouncer) for web applications. Index foreign keys and frequently queried columns. Avoid N+1 queries—use JOINs or batch loading. For large tables, consider partitioning by date. Always use parameterized queries to prevent SQL injection. ## Redis Caching Patterns Use Redis for session storage, rate limiting, and cache-aside patterns. Set TTLs on cached data to prevent stale reads. Consider Redis Cluster for high availability. Monitor memory usage—Redis holds everything in RAM. ## HubSpot CRM Integration HubSpot offers a REST API and webhooks for real-time sync. Authentication uses private apps (access token) or OAuth for public apps. The CRM API covers contacts, companies, deals, and tickets. Use the Search API for complex queries. Webhook subscriptions require a valid endpoint that responds to verification challenges. ## Xero Accounting Integration Xero uses OAuth 2.0. The API base is https://api.xero.com/api.xro/2.0/. Endpoints include Invoices, Contacts, Payments, and BankTransactions. Connections are tenant-specific—multi-tenant apps must handle organization switching. Rate limits: 60 calls per minute per organization. ## PostgreSQL Best Practices Use connection pooling (PgBouncer) for web applications. Index foreign keys and frequently queried columns. Avoid N+1 queries—use JOINs or batch loading. For large tables, consider partitioning by date. Always use parameterized queries to prevent SQL injection. ## Redis Caching Patterns Use Redis for session storage, rate limiting, and cache-aside patterns. Set TTLs on cached data to prevent stale reads. Consider Redis Cluster for high availability. Monitor memory usage—Redis holds everything in RAM. ## HubSpot CRM Integration HubSpot offers a REST API and webhooks for real-time sync. Authentication uses private apps (access token) or OAuth for public apps. The CRM API covers contacts, companies, deals, and tickets. Use the Search API for complex queries. Webhook subscriptions require a valid endpoint that responds to verification challenges. ## Xero Accounting Integration Xero uses OAuth 2.0. The API base is https://api.xero.com/api.xro/2.0/. Endpoints include Invoices, Contacts, Payments, and BankTransactions. Connections are tenant-specific—multi-tenant apps must handle organization switching. Rate limits: 60 calls per minute per organization. ## PostgreSQL Best Practices Use connection pooling (PgBouncer) for web applications. Index foreign keys and frequently queried columns. Avoid N+1 queries—use JOINs or batch loading. For large tables, consider partitioning by date. Always use parameterized queries to prevent SQL injection. ## Redis Caching Patterns Use Redis for session storage, rate limiting, and cache-aside patterns. Set TTLs on cached data to prevent stale reads. Consider Redis Cluster for high availability. Monitor memory usage—Redis holds everything in RAM. ## HubSpot CRM Integration HubSpot offers a REST API and webhooks for real-time sync. Authentication uses private apps (access token) or OAuth for public apps. The CRM API covers contacts, companies, deals, and tickets. Use the Search API for complex queries. Webhook subscriptions require a valid endpoint that responds to verification challenges. ## Xero Accounting Integration Xero uses OAuth 2.0. The API base is https://api.xero.com/api.xro/2.0/. Endpoints include Invoices, Contacts, Payments, and BankTransactions. Connections are tenant-specific—multi-tenant apps must handle organization switching. Rate limits: 60 calls per minute per organization. ## PostgreSQL Best Practices Use connection pooling (PgBouncer) for web applications. Index foreign keys and frequently queried columns. Avoid N+1 queries—use JOINs or batch loading. For large tables, consider partitioning by date. Always use parameterized queries to prevent SQL injection. ## Redis Caching Patterns Use Redis for session storage, rate limiting, and cache-aside patterns. Set TTLs on cached data to prevent stale reads. Consider Redis Cluster for high availability. Monitor memory usage—Redis holds everything in RAM. ## HubSpot CRM Integration HubSpot offers a REST API and webhooks for real-time sync. Authentication uses private apps (access token) or OAuth for public apps. The CRM API covers contacts, companies, deals, and tickets. Use the Search API for complex queries. Webhook subscriptions require a valid endpoint that responds to verification challenges. ## Xero Accounting Integration Xero uses OAuth 2.0. The API base is https://api.xero.com/api.xro/2.0/. Endpoints include Invoices, Contacts, Payments, and BankTransactions. Connections are tenant-specific—multi-tenant apps must handle organization switching. Rate limits: 60 calls per minute per organization. ## PostgreSQL Best Practices Use connection pooling (PgBouncer) for web applications. Index foreign keys and frequently queried columns. Avoid N+1 queries—use JOINs or batch loading. For large tables, consider partitioning by date. Always use parameterized queries to prevent SQL injection. ## Redis Caching Patterns Use Redis for session storage, rate limiting, and cache-aside patterns. Set TTLs on cached data to prevent stale reads. Consider Redis Cluster for high availability. Monitor memory usage—Redis holds everything in RAM. ## HubSpot CRM Integration HubSpot offers a REST API and webhooks for real-time sync. Authentication uses private apps (access token) or OAuth for public apps. The CRM API covers contacts, companies, deals, and tickets. Use the Search API for complex queries. Webhook subscriptions require a valid endpoint that responds to verification challenges. ## Xero Accounting Integration Xero uses OAuth 2.0. The API base is https://api.xero.com/api.xro/2.0/. Endpoints include Invoices, Contacts, Payments, and BankTransactions. Connections are tenant-specific—multi-tenant apps must handle organization switching. Rate limits: 60 calls per minute per organization. ## PostgreSQL Best Practices Use connection pooling (PgBouncer) for web applications. Index foreign keys and frequently queried columns. Avoid N+1 queries—use JOINs or batch loading. For large tables, consider partitioning by date. Always use parameterized queries to prevent SQL injection. ## Redis Caching Patterns Use Redis for session storage, rate limiting, and cache-aside patterns. Set TTLs on cached data to prevent stale reads. Consider Redis Cluster for high availability. Monitor memory usage—Redis holds everything in RAM. ## HubSpot CRM Integration HubSpot offers a REST API and webhooks for real-time sync. Authentication uses private apps (access token) or OAuth for public apps. The CRM API covers contacts, companies, deals, and tickets. Use the Search API for complex queries. Webhook subscriptions require a valid endpoint that responds to verification challenges. ## Xero Accounting Integration Xero uses OAuth 2.0. The API base is https://api.xero.com/api.xro/2.0/. Endpoints include Invoices, Contacts, Payments, and BankTransactions. Connections are tenant-specific—multi-tenant apps must handle organization switching. Rate limits: 60 calls per minute per organization. ## PostgreSQL Best Practices Use connection pooling (PgBouncer) for web applications. Index foreign keys and frequently queried columns. Avoid N+1 queries—use JOINs or batch loading. For large tables, consider partitioning by date. Always use parameterized queries to prevent SQL injection. ## Redis Caching Patterns Use Redis for session storage, rate limiting, and cache-aside patterns. Set TTLs on cached data to prevent stale reads. Consider Redis Cluster for high availability. Monitor memory usage—Redis holds everything in RAM. ## HubSpot CRM Integration HubSpot offers a REST API and webhooks for real-time sync. Authentication uses private apps (access token) or OAuth for public apps. The CRM API covers contacts, companies, deals, and tickets. Use the Search API for complex queries. Webhook subscriptions require a valid endpoint that responds to verification challenges. ## Xero Accounting Integration Xero uses OAuth 2.0. The API base is https://api.xero.com/api.xro/2.0/. Endpoints include Invoices, Contacts, Payments, and BankTransactions. Connections are tenant-specific—multi-tenant apps must handle organization switching. Rate limits: 60 calls per minute per organization. ## PostgreSQL Best Practices Use connection pooling (PgBouncer) for web applications. Index foreign keys and frequently queried columns. Avoid N+1 queries—use JOINs or batch loading. For large tables, consider partitioning by date. Always use parameterized queries to prevent SQL injection. ## Redis Caching Patterns Use Redis for session storage, rate limiting, and cache-aside patterns. Set TTLs on cached data to prevent stale reads. Consider Redis Cluster for high availability. Monitor memory usage—Redis holds everything in RAM. ## HubSpot CRM Integration HubSpot offers a REST API and webhooks for real-time sync. Authentication uses private apps (access token) or OAuth for public apps. The CRM API covers contacts, companies, deals, and tickets. Use the Search API for complex queries. Webhook subscriptions require a valid endpoint that responds to verification challenges. ## Xero Accounting Integration Xero uses OAuth 2.0. The API base is https://api.xero.com/api.xro/2.0/. Endpoints include Invoices, Contacts, Payments, and BankTransactions. Connections are tenant-specific—multi-tenant apps must handle organization switching. Rate limits: 60 calls per minute per organization. ## PostgreSQL Best Practices Use connection pooling (PgBouncer) for web applications. Index foreign keys and frequently queried columns. Avoid N+1 queries—use JOINs or batch loading. For large tables, consider partitioning by date. Always use parameterized queries to prevent SQL injection. ## Redis Caching Patterns Use Redis for session storage, rate limiting, and cache-aside patterns. Set TTLs on cached data to prevent stale reads. Consider Redis Cluster for high availability. Monitor memory usage—Redis holds everything in RAM. ## HubSpot CRM Integration HubSpot offers a REST API and webhooks for real-time sync. Authentication uses private apps (access token) or OAuth for public apps. The CRM API covers contacts, companies, deals, and tickets. Use the Search API for complex queries. Webhook subscriptions require a valid endpoint that responds to verification challenges. ## Xero Accounting Integration Xero uses OAuth 2.0. The API base is https://api.xero.com/api.xro/2.0/. Endpoints include Invoices, Contacts, Payments, and BankTransactions. Connections are tenant-specific—multi-tenant apps must handle organization switching. Rate limits: 60 calls per minute per organization. ## PostgreSQL Best Practices Use connection pooling (PgBouncer) for web applications. Index foreign keys and frequently queried columns. Avoid N+1 queries—use JOINs or batch loading. For large tables, consider partitioning by date. Always use parameterized queries to prevent SQL injection. ## Redis Caching Patterns Use Redis for session storage, rate limiting, and cache-aside patterns. Set TTLs on cached data to prevent stale reads. Consider Redis Cluster for high availability. Monitor memory usage—Redis holds everything in RAM. ## HubSpot CRM Integration HubSpot offers a REST API and webhooks for real-time sync. Authentication uses private apps (access token) or OAuth for public apps. The CRM API covers contacts, companies, deals, and tickets. Use the Search API for complex queries. Webhook subscriptions require a valid endpoint that responds to verification challenges. ## Xero Accounting Integration Xero uses OAuth 2.0. The API base is https://api.xero.com/api.xro/2.0/. Endpoints include Invoices, Contacts, Payments, and BankTransactions. Connections are tenant-specific—multi-tenant apps must handle organization switching. Rate limits: 60 calls per minute per organization. ## PostgreSQL Best Practices Use connection pooling (PgBouncer) for web applications. Index foreign keys and frequently queried columns. Avoid N+1 queries—use JOINs or batch loading. For large tables, consider partitioning by date. Always use parameterized queries to prevent SQL injection. ## Redis Caching Patterns Use Redis for session storage, rate limiting, and cache-aside patterns. Set TTLs on cached data to prevent stale reads. Consider Redis Cluster for high availability. Monitor memory usage—Redis holds everything in RAM. ## HubSpot CRM Integration HubSpot offers a REST API and webhooks for real-time sync. Authentication uses private apps (access token) or OAuth for public apps. The CRM API covers contacts, companies, deals, and tickets. Use the Search API for complex queries. Webhook subscriptions require a valid endpoint that responds to verification challenges. ## Xero Accounting Integration Xero uses OAuth 2.0. The API base is https://api.xero.com/api.xro/2.0/. Endpoints include Invoices, Contacts, Payments, and BankTransactions. Connections are tenant-specific—multi-tenant apps must handle organization switching. Rate limits: 60 calls per minute per organization. ## PostgreSQL Best Practices Use connection pooling (PgBouncer) for web applications. Index foreign keys and frequently queried columns. Avoid N+1 queries—use JOINs or batch loading. For large tables, consider partitioning by date. Always use parameterized queries to prevent SQL injection. ## Redis Caching Patterns Use Redis for session storage, rate limiting, and cache-aside patterns. Set TTLs on cached data to prevent stale reads. Consider Redis Cluster for high availability. Monitor memory usage—Redis holds everything in RAM. ## HubSpot CRM Integration HubSpot offers a REST API and webhooks for real-time sync. Authentication uses private apps (access token) or OAuth for public apps. The CRM API covers contacts, companies, deals, and tickets. Use the Search API for complex queries. Webhook subscriptions require a valid endpoint that responds to verification challenges. ## Xero Accounting Integration Xero uses OAuth 2.0. The API base is https://api.xero.com/api.xro/2.0/. Endpoints include Invoices, Contacts, Payments, and BankTransactions. Connections are tenant-specific—multi-tenant apps must handle organization switching. Rate limits: 60 calls per minute per organization. ## PostgreSQL Best Practices Use connection pooling (PgBouncer) for web applications. Index foreign keys and frequently queried columns. Avoid N+1 queries—use JOINs or batch loading. For large tables, consider partitioning by date. Always use parameterized queries to prevent SQL injection. ## Redis Caching Patterns Use Redis for session storage, rate limiting, and cache-aside patterns. Set TTLs on cached data to prevent stale reads. Consider Redis Cluster for high availability. Monitor memory usage—Redis holds everything in RAM. ## HubSpot CRM Integration HubSpot offers a REST API and webhooks for real-time sync. Authentication uses private apps (access token) or OAuth for public apps. The CRM API covers contacts, companies, deals, and tickets. Use the Search API for complex queries. Webhook subscriptions require a valid endpoint that responds to verification challenges. ## Xero Accounting Integration Xero uses OAuth 2.0. The API base is https://api.xero.com/api.xro/2.0/. Endpoints include Invoices, Contacts, Payments, and BankTransactions. Connections are tenant-specific—multi-tenant apps must handle organization switching. Rate limits: 60 calls per minute per organization. ## PostgreSQL Best Practices Use connection pooling (PgBouncer) for web applications. Index foreign keys and frequently queried columns. Avoid N+1 queries—use JOINs or batch loading. For large tables, consider partitioning by date. Always use parameterized queries to prevent SQL injection. ## Redis Caching Patterns Use Redis for session storage, rate limiting, and cache-aside patterns. Set TTLs on cached data to prevent stale reads. Consider Redis Cluster for high availability. Monitor memory usage—Redis holds everything in RAM. ## HubSpot CRM Integration HubSpot offers a REST API and webhooks for real-time sync. Authentication uses private apps (access token) or OAuth for public apps. The CRM API covers contacts, companies, deals, and tickets. Use the Search API for complex queries. Webhook subscriptions require a valid endpoint that responds to verification challenges. ## Xero Accounting Integration Xero uses OAuth 2.0. The API base is https://api.xero.com/api.xro/2.0/. Endpoints include Invoices, Contacts, Payments, and BankTransactions. Connections are tenant-specific—multi-tenant apps must handle organization switching. Rate limits: 60 calls per minute per organization. ## PostgreSQL Best Practices Use connection pooling (PgBouncer) for web applications. Index foreign keys and frequently queried columns. Avoid N+1 queries—use JOINs or batch loading. For large tables, consider partitioning by date. Always use parameterized queries to prevent SQL injection. ## Redis Caching Patterns Use Redis for session storage, rate limiting, and cache-aside patterns. Set TTLs on cached data to prevent stale reads. Consider Redis Cluster for high availability. Monitor memory usage—Redis holds everything in RAM. ## HubSpot CRM Integration HubSpot offers a REST API and webhooks for real-time sync. Authentication uses private apps (access token) or OAuth for public apps. The CRM API covers contacts, companies, deals, and tickets. Use the Search API for complex queries. Webhook subscriptions require a valid endpoint that responds to verification challenges. ## Xero Accounting Integration Xero uses OAuth 2.0. The API base is https://api.xero.com/api.xro/2.0/. Endpoints include Invoices, Contacts, Payments, and BankTransactions. Connections are tenant-specific—multi-tenant apps must handle organization switching. Rate limits: 60 calls per minute per organization. ## PostgreSQL Best Practices Use connection pooling (PgBouncer) for web applications. Index foreign keys and frequently queried columns. Avoid N+1 queries—use JOINs or batch loading. For large tables, consider partitioning by date. Always use parameterized queries to prevent SQL injection. ## Redis Caching Patterns Use Redis for session storage, rate limiting, and cache-aside patterns. Set TTLs on cached data to prevent stale reads. Consider Redis Cluster for high availability. Monitor memory usage—Redis holds everything in RAM. ## HubSpot CRM Integration HubSpot offers a REST API and webhooks for real-time sync. Authentication uses private apps (access token) or OAuth for public apps. The CRM API covers contacts, companies, deals, and tickets. Use the Search API for complex queries. Webhook subscriptions require a valid endpoint that responds to verification challenges. ## Xero Accounting Integration Xero uses OAuth 2.0. The API base is https://api.xero.com/api.xro/2.0/. Endpoints include Invoices, Contacts, Payments, and BankTransactions. Connections are tenant-specific—multi-tenant apps must handle organization switching. Rate limits: 60 calls per minute per organization. ## PostgreSQL Best Practices Use connection pooling (PgBouncer) for web applications. Index foreign keys and frequently queried columns. Avoid N+1 queries—use JOINs or batch loading. For large tables, consider partitioning by date. Always use parameterized queries to prevent SQL injection. ## Redis Caching Patterns Use Redis for session storage, rate limiting, and cache-aside patterns. Set TTLs on cached data to prevent stale reads. Consider Redis Cluster for high availability. Monitor memory usage—Redis holds everything in RAM. ## HubSpot CRM Integration HubSpot offers a REST API and webhooks for real-time sync. Authentication uses private apps (access token) or OAuth for public apps. The CRM API covers contacts, companies, deals, and tickets. Use the Search API for complex queries. Webhook subscriptions require a valid endpoint that responds to verification challenges. ## Xero Accounting Integration Xero uses OAuth 2.0. The API base is https://api.xero.com/api.xro/2.0/. Endpoints include Invoices, Contacts, Payments, and BankTransactions. Connections are tenant-specific—multi-tenant apps must handle organization switching. Rate limits: 60 calls per minute per organization. ## PostgreSQL Best Practices Use connection pooling (PgBouncer) for web applications. Index foreign keys and frequently queried columns. Avoid N+1 queries—use JOINs or batch loading. For large tables, consider partitioning by date. Always use parameterized queries to prevent SQL injection. ## Redis Caching Patterns Use Redis for session storage, rate limiting, and cache-aside patterns. Set TTLs on cached data to prevent stale reads. Consider Redis Cluster for high availability. Monitor memory usage—Redis holds everything in RAM. ## HubSpot CRM Integration HubSpot offers a REST API and webhooks for real-time sync. Authentication uses private apps (access token) or OAuth for public apps. The CRM API covers contacts, companies, deals, and tickets. Use the Search API for complex queries. Webhook subscriptions require a valid endpoint that responds to verification challenges. ## Xero Accounting Integration Xero uses OAuth 2.0. The API base is https://api.xero.com/api.xro/2.0/. Endpoints include Invoices, Contacts, Payments, and BankTransactions. Connections are tenant-specific—multi-tenant apps must handle organization switching. Rate limits: 60 calls per minute per organization. ## PostgreSQL Best Practices Use connection pooling (PgBouncer) for web applications. Index foreign keys and frequently queried columns. Avoid N+1 queries—use JOINs or batch loading. For large tables, consider partitioning by date. Always use parameterized queries to prevent SQL injection. ## Redis Caching Patterns Use Redis for session storage, rate limiting, and cache-aside patterns. Set TTLs on cached data to prevent stale reads. Consider Redis Cluster for high availability. Monitor memory usage—Redis holds everything in RAM. ## HubSpot CRM Integration HubSpot offers a REST API and webhooks for real-time sync. Authentication uses private apps (access token) or OAuth for public apps. The CRM API covers contacts, companies, deals, and tickets. Use the Search API for complex queries. Webhook subscriptions require a valid endpoint that responds to verification challenges. ## Xero Accounting Integration Xero uses OAuth 2.0. The API base is https://api.xero.com/api.xro/2.0/. Endpoints include Invoices, Contacts, Payments, and BankTransactions. Connections are tenant-specific—multi-tenant apps must handle organization switching. Rate limits: 60 calls per minute per organization. ## PostgreSQL Best Practices Use connection pooling (PgBouncer) for web applications. Index foreign keys and frequently queried columns. Avoid N+1 queries—use JOINs or batch loading. For large tables, consider partitioning by date. Always use parameterized queries to prevent SQL injection. ## Redis Caching Patterns Use Redis for session storage, rate limiting, and cache-aside patterns. Set TTLs on cached data to prevent stale reads. Consider Redis Cluster for high availability. Monitor memory usage—Redis holds everything in RAM. ## HubSpot CRM Integration HubSpot offers a REST API and webhooks for real-time sync. Authentication uses private apps (access token) or OAuth for public apps. The CRM API covers contacts, companies, deals, and tickets. Use the Search API for complex queries. Webhook subscriptions require a valid endpoint that responds to verification challenges. ## Xero Accounting Integration Xero uses OAuth 2.0. The API base is https://api.xero.com/api.xro/2.0/. Endpoints include Invoices, Contacts, Payments, and BankTransactions. Connections are tenant-specific—multi-tenant apps must handle organization switching. Rate limits: 60 calls per minute per organization. ## PostgreSQL Best Practices Use connection pooling (PgBouncer) for web applications. Index foreign keys and frequently queried columns. Avoid N+1 queries—use JOINs or batch loading. For large tables, consider partitioning by date. Always use parameterized queries to prevent SQL injection. ## Redis Caching Patterns Use Redis for session storage, rate limiting, and cache-aside patterns. Set TTLs on cached data to prevent stale reads. Consider Redis Cluster for high availability. Monitor memory usage—Redis holds everything in RAM. ## HubSpot CRM Integration HubSpot offers a REST API and webhooks for real-time sync. Authentication uses private apps (access token) or OAuth for public apps. The CRM API covers contacts, companies, deals, and tickets. Use the Search API for complex queries. Webhook subscriptions require a valid endpoint that responds to verification challenges. ## Xero Accounting Integration Xero uses OAuth 2.0. The API base is https://api.xero.com/api.xro/2.0/. Endpoints include Invoices, Contacts, Payments, and BankTransactions. Connections are tenant-specific—multi-tenant apps must handle organization switching. Rate limits: 60 calls per minute per organization. ## PostgreSQL Best Practices Use connection pooling (PgBouncer) for web applications. Index foreign keys and frequently queried columns. Avoid N+1 queries—use JOINs or batch loading. For large tables, consider partitioning by date. Always use parameterized queries to prevent SQL injection. ## Redis Caching Patterns Use Redis for session storage, rate limiting, and cache-aside patterns. Set TTLs on cached data to prevent stale reads. Consider Redis Cluster for high availability. Monitor memory usage—Redis holds everything in RAM. ## HubSpot CRM Integration HubSpot offers a REST API and webhooks for real-time sync. Authentication uses private apps (access token) or OAuth for public apps. The CRM API covers contacts, companies, deals, and tickets. Use the Search API for complex queries. Webhook subscriptions require a valid endpoint that responds to verification challenges. ## Xero Accounting Integration Xero uses OAuth 2.0. The API base is https://api.xero.com/api.xro/2.0/. Endpoints include Invoices, Contacts, Payments, and BankTransactions. Connections are tenant-specific—multi-tenant apps must handle organization switching. Rate limits: 60 calls per minute per organization. ## PostgreSQL Best Practices Use connection pooling (PgBouncer) for web applications. Index foreign keys and frequently queried columns. Avoid N+1 queries—use JOINs or batch loading. For large tables, consider partitioning by date. Always use parameterized queries to prevent SQL injection. ## Redis Caching Patterns Use Redis for session storage, rate limiting, and cache-aside patterns. Set TTLs on cached data to prevent stale reads. Consider Redis Cluster for high availability. Monitor memory usage—Redis holds everything in RAM. ## HubSpot CRM Integration HubSpot offers a REST API and webhooks for real-time sync. Authentication uses private apps (access token) or OAuth for public apps. The CRM API covers contacts, companies, deals, and tickets. Use the Search API for complex queries. Webhook subscriptions require a valid endpoint that responds to verification challenges. ## Xero Accounting Integration Xero uses OAuth 2.0. The API base is https://api.xero.com/api.xro/2.0/. Endpoints include Invoices, Contacts, Payments, and BankTransactions. Connections are tenant-specific—multi-tenant apps must handle organization switching. Rate limits: 60 calls per minute per organization. ## PostgreSQL Best Practices Use connection pooling (PgBouncer) for web applications. Index foreign keys and frequently queried columns. Avoid N+1 queries—use JOINs or batch loading. For large tables, consider partitioning by date. Always use parameterized queries to prevent SQL injection. ## Redis Caching Patterns Use Redis for session storage, rate limiting, and cache-aside patterns. Set TTLs on cached data to prevent stale reads. Consider Redis Cluster for high availability. Monitor memory usage—Redis holds everything in RAM. ## HubSpot CRM Integration HubSpot offers a REST API and webhooks for real-time sync. Authentication uses private apps (access token) or OAuth for public apps. The CRM API covers contacts, companies, deals, and tickets. Use the Search API for complex queries. Webhook subscriptions require a valid endpoint that responds to verification challenges. ## Xero Accounting Integration Xero uses OAuth 2.0. The API base is https://api.xero.com/api.xro/2.0/. Endpoints include Invoices, Contacts, Payments, and BankTransactions. Connections are tenant-specific—multi-tenant apps must handle organization switching. Rate limits: 60 calls per minute per organization. ## PostgreSQL Best Practices Use connection pooling (PgBouncer) for web applications. Index foreign keys and frequently queried columns. Avoid N+1 queries—use JOINs or batch loading. For large tables, consider partitioning by date. Always use parameterized queries to prevent SQL injection. ## Redis Caching Patterns Use Redis for session storage, rate limiting, and cache-aside patterns. Set TTLs on cached data to prevent stale reads. Consider Redis Cluster for high availability. Monitor memory usage—Redis holds everything in RAM. ## HubSpot CRM Integration HubSpot offers a REST API and webhooks for real-time sync. Authentication uses private apps (access token) or OAuth for public apps. The CRM API covers contacts, companies, deals, and tickets. Use the Search API for complex queries. Webhook subscriptions require a valid endpoint that responds to verification challenges. ## Xero Accounting Integration Xero uses OAuth 2.0. The API base is https://api.xero.com/api.xro/2.0/. Endpoints include Invoices, Contacts, Payments, and BankTransactions. Connections are tenant-specific—multi-tenant apps must handle organization switching. Rate limits: 60 calls per minute per organization. ## PostgreSQL Best Practices Use connection pooling (PgBouncer) for web applications. Index foreign keys and frequently queried columns. Avoid N+1 queries—use JOINs or batch loading. For large tables, consider partitioning by date. Always use parameterized queries to prevent SQL injection. ## Redis Caching Patterns Use Redis for session storage, rate limiting, and cache-aside patterns. Set TTLs on cached data to prevent stale reads. Consider Redis Cluster for high availability. Monitor memory usage—Redis holds everything in RAM. ## HubSpot CRM Integration HubSpot offers a REST API and webhooks for real-time sync. Authentication uses private apps (access token) or OAuth for public apps. The CRM API covers contacts, companies, deals, and tickets. Use the Search API for complex queries. Webhook subscriptions require a valid endpoint that responds to verification challenges. ## Xero Accounting Integration Xero uses OAuth 2.0. The API base is https://api.xero.com/api.xro/2.0/. Endpoints include Invoices, Contacts, Payments, and BankTransactions. Connections are tenant-specific—multi-tenant apps must handle organization switching. Rate limits: 60 calls per minute per organization. ## PostgreSQL Best Practices Use connection pooling (PgBouncer) for web applications. Index foreign keys and frequently queried columns. Avoid N+1 queries—use JOINs or batch loading. For large tables, consider partitioning by date. Always use parameterized queries to prevent SQL injection. ## Redis Caching Patterns Use Redis for session storage, rate limiting, and cache-aside patterns. Set TTLs on cached data to prevent stale reads. Consider Redis Cluster for high availability. Monitor memory usage—Redis holds everything in RAM. ## HubSpot CRM Integration HubSpot offers a REST API and webhooks for real-time sync. Authentication uses private apps (access token) or OAuth for public apps. The CRM API covers contacts, companies, deals, and tickets. Use the Search API for complex queries. Webhook subscriptions require a valid endpoint that responds to verification challenges. ## Xero Accounting Integration Xero uses OAuth 2.0. The API base is https://api.xero.com/api.xro/2.0/. Endpoints include Invoices, Contacts, Payments, and BankTransactions. Connections are tenant-specific—multi-tenant apps must handle organization switching. Rate limits: 60 calls per minute per organization. ## PostgreSQL Best Practices Use connection pooling (PgBouncer) for web applications. Index foreign keys and frequently queried columns. Avoid N+1 queries—use JOINs or batch loading. For large tables, consider partitioning by date. Always use parameterized queries to prevent SQL injection. ## Redis Caching Patterns Use Redis for session storage, rate limiting, and cache-aside patterns. Set TTLs on cached data to prevent stale reads. Consider Redis Cluster for high availability. Monitor memory usage—Redis holds everything in RAM. ## HubSpot CRM Integration HubSpot offers a REST API and webhooks for real-time sync. Authentication uses private apps (access token) or OAuth for public apps. The CRM API covers contacts, companies, deals, and tickets. Use the Search API for complex queries. Webhook subscriptions require a valid endpoint that responds to verification challenges. ## Xero Accounting Integration Xero uses OAuth 2.0. The API base is https://api.xero.com/api.xro/2.0/. Endpoints include Invoices, Contacts, Payments, and BankTransactions. Connections are tenant-specific—multi-tenant apps must handle organization switching. Rate limits: 60 calls per minute per organization. ## PostgreSQL Best Practices Use connection pooling (PgBouncer) for web applications. Index foreign keys and frequently queried columns. Avoid N+1 queries—use JOINs or batch loading. For large tables, consider partitioning by date. Always use parameterized queries to prevent SQL injection. ## Redis Caching Patterns Use Redis for session storage, rate limiting, and cache-aside patterns. Set TTLs on cached data to prevent stale reads. Consider Redis Cluster for high availability. Monitor memory usage—Redis holds everything in RAM. ## HubSpot CRM Integration HubSpot offers a REST API and webhooks for real-time sync. Authentication uses private apps (access token) or OAuth for public apps. The CRM API covers contacts, companies, deals, and tickets. Use the Search API for complex queries. Webhook subscriptions require a valid endpoint that responds to verification challenges. ## Xero Accounting Integration Xero uses OAuth 2.0. The API base is https://api.xero.com/api.xro/2.0/. Endpoints include Invoices, Contacts, Payments, and BankTransactions. Connections are tenant-specific—multi-tenant apps must handle organization switching. Rate limits: 60 calls per minute per organization. ## PostgreSQL Best Practices Use connection pooling (PgBouncer) for web applications. Index foreign keys and frequently queried columns. Avoid N+1 queries—use JOINs or batch loading. For large tables, consider partitioning by date. Always use parameterized queries to prevent SQL injection. ## Redis Caching Patterns Use Redis for session storage, rate limiting, and cache-aside patterns. Set TTLs on cached data to prevent stale reads. Consider Redis Cluster for high availability. Monitor memory usage—Redis holds everything in RAM. ## HubSpot CRM Integration HubSpot offers a REST API and webhooks for real-time sync. Authentication uses private apps (access token) or OAuth for public apps. The CRM API covers contacts, companies, deals, and tickets. Use the Search API for complex queries. Webhook subscriptions require a valid endpoint that responds to verification challenges. ## Xero Accounting Integration Xero uses OAuth 2.0. The API base is https://api.xero.com/api.xro/2.0/. Endpoints include Invoices, Contacts, Payments, and BankTransactions. Connections are tenant-specific—multi-tenant apps must handle organization switching. Rate limits: 60 calls per minute per organization. ## PostgreSQL Best Practices Use connection pooling (PgBouncer) for web applications. Index foreign keys and frequently queried columns. Avoid N+1 queries—use JOINs or batch loading. For large tables, consider partitioning by date. Always use parameterized queries to prevent SQL injection. ## Redis Caching Patterns Use Redis for session storage, rate limiting, and cache-aside patterns. Set TTLs on cached data to prevent stale reads. Consider Redis Cluster for high availability. Monitor memory usage—Redis holds everything in RAM. ## HubSpot CRM Integration HubSpot offers a REST API and webhooks for real-time sync. Authentication uses private apps (access token) or OAuth for public apps. The CRM API covers contacts, companies, deals, and tickets. Use the Search API for complex queries. Webhook subscriptions require a valid endpoint that responds to verification challenges. ## Xero Accounting Integration Xero uses OAuth 2.0. The API base is https://api.xero.com/api.xro/2.0/. Endpoints include Invoices, Contacts, Payments, and BankTransactions. Connections are tenant-specific—multi-tenant apps must handle organization switching. Rate limits: 60 calls per minute per organization. ## PostgreSQL Best Practices Use connection pooling (PgBouncer) for web applications. Index foreign keys and frequently queried columns. Avoid N+1 queries—use JOINs or batch loading. For large tables, consider partitioning by date. Always use parameterized queries to prevent SQL injection. ## Redis Caching Patterns Use Redis for session storage, rate limiting, and cache-aside patterns. Set TTLs on cached data to prevent stale reads. Consider Redis Cluster for high availability. Monitor memory usage—Redis holds everything in RAM. ## HubSpot CRM Integration HubSpot offers a REST API and webhooks for real-time sync. Authentication uses private apps (access token) or OAuth for public apps. The CRM API covers contacts, companies, deals, and tickets. Use the Search API for complex queries. Webhook subscriptions require a valid endpoint that responds to verification challenges. ## Xero Accounting Integration Xero uses OAuth 2.0. The API base is https://api.xero.com/api.xro/2.0/. Endpoints include Invoices, Contacts, Payments, and BankTransactions. Connections are tenant-specific—multi-tenant apps must handle organization switching. Rate limits: 60 calls per minute per organization. ## PostgreSQL Best Practices Use connection pooling (PgBouncer) for web applications. Index foreign keys and frequently queried columns. Avoid N+1 queries—use JOINs or batch loading. For large tables, consider partitioning by date. Always use parameterized queries to prevent SQL injection. ## Redis Caching Patterns Use Redis for session storage, rate limiting, and cache-aside patterns. Set TTLs on cached data to prevent stale reads. Consider Redis Cluster for high availability. Monitor memory usage—Redis holds everything in RAM. ## HubSpot CRM Integration HubSpot offers a REST API and webhooks for real-time sync. Authentication uses private apps (access token) or OAuth for public apps. The CRM API covers contacts, companies, deals, and tickets. Use the Search API for complex queries. Webhook subscriptions require a valid endpoint that responds to verification challenges. ## Xero Accounting Integration Xero uses OAuth 2.0. The API base is https://api.xero.com/api.xro/2.0/. Endpoints include Invoices, Contacts, Payments, and BankTransactions. Connections are tenant-specific—multi-tenant apps must handle organization switching. Rate limits: 60 calls per minute per organization. ## PostgreSQL Best Practices Use connection pooling (PgBouncer) for web applications. Index foreign keys and frequently queried columns. Avoid N+1 queries—use JOINs or batch loading. For large tables, consider partitioning by date. Always use parameterized queries to prevent SQL injection. ## Redis Caching Patterns Use Redis for session storage, rate limiting, and cache-aside patterns. Set TTLs on cached data to prevent stale reads. Consider Redis Cluster for high availability. Monitor memory usage—Redis holds everything in RAM. ## HubSpot CRM Integration HubSpot offers a REST API and webhooks for real-time sync. Authentication uses private apps (access token) or OAuth for public apps. The CRM API covers contacts, companies, deals, and tickets. Use the Search API for complex queries. Webhook subscriptions require a valid endpoint that responds to verification challenges. ## Xero Accounting Integration Xero uses OAuth 2.0. The API base is https://api.xero.com/api.xro/2.0/. Endpoints include Invoices, Contacts, Payments, and BankTransactions. Connections are tenant-specific—multi-tenant apps must handle organization switching. Rate limits: 60 calls per minute per organization. ## PostgreSQL Best Practices Use connection pooling (PgBouncer) for web applications. Index foreign keys and frequently queried columns. Avoid N+1 queries—use JOINs or batch loading. For large tables, consider partitioning by date. Always use parameterized queries to prevent SQL injection. ## Redis Caching Patterns Use Redis for session storage, rate limiting, and cache-aside patterns. Set TTLs on cached data to prevent stale reads. Consider Redis Cluster for high availability. Monitor memory usage—Redis holds everything in RAM. ## HubSpot CRM Integration HubSpot offers a REST API and webhooks for real-time sync. Authentication uses private apps (access token) or OAuth for public apps. The CRM API covers contacts, companies, deals, and tickets. Use the Search API for complex queries. Webhook subscriptions require a valid endpoint that responds to verification challenges. ## Xero Accounting Integration Xero uses OAuth 2.0. The API base is https://api.xero.com/api.xro/2.0/. Endpoints include Invoices, Contacts, Payments, and BankTransactions. Connections are tenant-specific—multi-tenant apps must handle organization switching. Rate limits: 60 calls per minute per organization. ## PostgreSQL Best Practices Use connection pooling (PgBouncer) for web applications. Index foreign keys and frequently queried columns. Avoid N+1 queries—use JOINs or batch loading. For large tables, consider partitioning by date. Always use parameterized queries to prevent SQL injection. ## Redis Caching Patterns Use Redis for session storage, rate limiting, and cache-aside patterns. Set TTLs on cached data to prevent stale reads. Consider Redis Cluster for high availability. Monitor memory usage—Redis holds everything in RAM. ## HubSpot CRM Integration HubSpot offers a REST API and webhooks for real-time sync. Authentication uses private apps (access token) or OAuth for public apps. The CRM API covers contacts, companies, deals, and tickets. Use the Search API for complex queries. Webhook subscriptions require a valid endpoint that responds to verification challenges. ## Xero Accounting Integration Xero uses OAuth 2.0. The API base is https://api.xero.com/api.xro/2.0/. Endpoints include Invoices, Contacts, Payments, and BankTransactions. Connections are tenant-specific—multi-tenant apps must handle organization switching. Rate limits: 60 calls per minute per organization. ## PostgreSQL Best Practices Use connection pooling (PgBouncer) for web applications. Index foreign keys and frequently queried columns. Avoid N+1 queries—use JOINs or batch loading. For large tables, consider partitioning by date. Always use parameterized queries to prevent SQL injection. ## Redis Caching Patterns Use Redis for session storage, rate limiting, and cache-aside patterns. Set TTLs on cached data to prevent stale reads. Consider Redis Cluster for high availability. Monitor memory usage—Redis holds everything in RAM. ## HubSpot CRM Integration HubSpot offers a REST API and webhooks for real-time sync. Authentication uses private apps (access token) or OAuth for public apps. The CRM API covers contacts, companies, deals, and tickets. Use the Search API for complex queries. Webhook subscriptions require a valid endpoint that responds to verification challenges. ## Xero Accounting Integration Xero uses OAuth 2.0. The API base is https://api.xero.com/api.xro/2.0/. Endpoints include Invoices, Contacts, Payments, and BankTransactions. Connections are tenant-specific—multi-tenant apps must handle organization switching. Rate limits: 60 calls per minute per organization. ## PostgreSQL Best Practices Use connection pooling (PgBouncer) for web applications. Index foreign keys and frequently queried columns. Avoid N+1 queries—use JOINs or batch loading. For large tables, consider partitioning by date. Always use parameterized queries to prevent SQL injection. ## Redis Caching Patterns Use Redis for session storage, rate limiting, and cache-aside patterns. Set TTLs on cached data to prevent stale reads. Consider Redis Cluster for high availability. Monitor memory usage—Redis holds everything in RAM. ## HubSpot CRM Integration HubSpot offers a REST API and webhooks for real-time sync. Authentication uses private apps (access token) or OAuth for public apps. The CRM API covers contacts, companies, deals, and tickets. Use the Search API for complex queries. Webhook subscriptions require a valid endpoint that responds to verification challenges. ## Xero Accounting Integration Xero uses OAuth 2.0. The API base is https://api.xero.com/api.xro/2.0/. Endpoints include Invoices, Contacts, Payments, and BankTransactions. Connections are tenant-specific—multi-tenant apps must handle organization switching. Rate limits: 60 calls per minute per organization. ## PostgreSQL Best Practices Use connection pooling (PgBouncer) for web applications. Index foreign keys and frequently queried columns. Avoid N+1 queries—use JOINs or batch loading. For large tables, consider partitioning by date. Always use parameterized queries to prevent SQL injection. ## Redis Caching Patterns Use Redis for session storage, rate limiting, and cache-aside patterns. Set TTLs on cached data to prevent stale reads. Consider Redis Cluster for high availability. Monitor memory usage—Redis holds everything in RAM. ## HubSpot CRM Integration HubSpot offers a REST API and webhooks for real-time sync. Authentication uses private apps (access token) or OAuth for public apps. The CRM API covers contacts, companies, deals, and tickets. Use the Search API for complex queries. Webhook subscriptions require a valid endpoint that responds to verification challenges. ## Xero Accounting Integration Xero uses OAuth 2.0. The API base is https://api.xero.com/api.xro/2.0/. Endpoints include Invoices, Contacts, Payments, and BankTransactions. Connections are tenant-specific—multi-tenant apps must handle organization switching. Rate limits: 60 calls per minute per organization. ## PostgreSQL Best Practices Use connection pooling (PgBouncer) for web applications. Index foreign keys and frequently queried columns. Avoid N+1 queries—use JOINs or batch loading. For large tables, consider partitioning by date. Always use parameterized queries to prevent SQL injection. ## Redis Caching Patterns Use Redis for session storage, rate limiting, and cache-aside patterns. Set TTLs on cached data to prevent stale reads. Consider Redis Cluster for high availability. Monitor memory usage—Redis holds everything in RAM. ## HubSpot CRM Integration HubSpot offers a REST API and webhooks for real-time sync. Authentication uses private apps (access token) or OAuth for public apps. The CRM API covers contacts, companies, deals, and tickets. Use the Search API for complex queries. Webhook subscriptions require a valid endpoint that responds to verification challenges. ## Xero Accounting Integration Xero uses OAuth 2.0. The API base is https://api.xero.com/api.xro/2.0/. Endpoints include Invoices, Contacts, Payments, and BankTransactions. Connections are tenant-specific—multi-tenant apps must handle organization switching. Rate limits: 60 calls per minute per organization. ## PostgreSQL Best Practices Use connection pooling (PgBouncer) for web applications. Index foreign keys and frequently queried columns. Avoid N+1 queries—use JOINs or batch loading. For large tables, consider partitioning by date. Always use parameterized queries to prevent SQL injection. ## Redis Caching Patterns Use Redis for session storage, rate limiting, and cache-aside patterns. Set TTLs on cached data to prevent stale reads. Consider Redis Cluster for high availability. Monitor memory usage—Redis holds everything in RAM. ## HubSpot CRM Integration HubSpot offers a REST API and webhooks for real-time sync. Authentication uses private apps (access token) or OAuth for public apps. The CRM API covers contacts, companies, deals, and tickets. Use the Search API for complex queries. Webhook subscriptions require a valid endpoint that responds to verification challenges. ## Xero Accounting Integration Xero uses OAuth 2.0. The API base is https://api.xero.com/api.xro/2.0/. Endpoints include Invoices, Contacts, Payments, and BankTransactions. Connections are tenant-specific—multi-tenant apps must handle organization switching. Rate limits: 60 calls per minute per organization. ## PostgreSQL Best Practices Use connection pooling (PgBouncer) for web applications. Index foreign keys and frequently queried columns. Avoid N+1 queries—use JOINs or batch loading. For large tables, consider partitioning by date. Always use parameterized queries to prevent SQL injection. ## Redis Caching Patterns Use Redis for session storage, rate limiting, and cache-aside patterns. Set TTLs on cached data to prevent stale reads. Consider Redis Cluster for high availability. Monitor memory usage—Redis holds everything in RAM. ## HubSpot CRM Integration HubSpot offers a REST API and webhooks for real-time sync. Authentication uses private apps (access token) or OAuth for public apps. The CRM API covers contacts, companies, deals, and tickets. Use the Search API for complex queries. Webhook subscriptions require a valid endpoint that responds to verification challenges. ## Xero Accounting Integration Xero uses OAuth 2.0. The API base is https://api.xero.com/api.xro/2.0/. Endpoints include Invoices, Contacts, Payments, and BankTransactions. Connections are tenant-specific—multi-tenant apps must handle organization switching. Rate limits: 60 calls per minute per organization. ## PostgreSQL Best Practices Use connection pooling (PgBouncer) for web applications. Index foreign keys and frequently queried columns. Avoid N+1 queries—use JOINs or batch loading. For large tables, consider partitioning by date. Always use parameterized queries to prevent SQL injection. ## Redis Caching Patterns Use Redis for session storage, rate limiting, and cache-aside patterns. Set TTLs on cached data to prevent stale reads. Consider Redis Cluster for high availability. Monitor memory usage—Redis holds everything in RAM. ## HubSpot CRM Integration HubSpot offers a REST API and webhooks for real-time sync. Authentication uses private apps (access token) or OAuth for public apps. The CRM API covers contacts, companies, deals, and tickets. Use the Search API for complex queries. Webhook subscriptions require a valid endpoint that responds to verification challenges. ## Xero Accounting Integration Xero uses OAuth 2.0. The API base is https://api.xero.com/api.xro/2.0/. Endpoints include Invoices, Contacts, Payments, and BankTransactions. Connections are tenant-specific—multi-tenant apps must handle organization switching. Rate limits: 60 calls per minute per organization. ## PostgreSQL Best Practices Use connection pooling (PgBouncer) for web applications. Index foreign keys and frequently queried columns. Avoid N+1 queries—use JOINs or batch loading. For large tables, consider partitioning by date. Always use parameterized queries to prevent SQL injection. ## Redis Caching Patterns Use Redis for session storage, rate limiting, and cache-aside patterns. Set TTLs on cached data to prevent stale reads. Consider Redis Cluster for high availability. Monitor memory usage—Redis holds everything in RAM. ## HubSpot CRM Integration HubSpot offers a REST API and webhooks for real-time sync. Authentication uses private apps (access token) or OAuth for public apps. The CRM API covers contacts, companies, deals, and tickets. Use the Search API for complex queries. Webhook subscriptions require a valid endpoint that responds to verification challenges. ## Xero Accounting Integration Xero uses OAuth 2.0. The API base is https://api.xero.com/api.xro/2.0/. Endpoints include Invoices, Contacts, Payments, and BankTransactions. Connections are tenant-specific—multi-tenant apps must handle organization switching. Rate limits: 60 calls per minute per organization. ## PostgreSQL Best Practices Use connection pooling (PgBouncer) for web applications. Index foreign keys and frequently queried columns. Avoid N+1 queries—use JOINs or batch loading. For large tables, consider partitioning by date. Always use parameterized queries to prevent SQL injection. ## Redis Caching Patterns Use Redis for session storage, rate limiting, and cache-aside patterns. Set TTLs on cached data to prevent stale reads. Consider Redis Cluster for high availability. Monitor memory usage—Redis holds everything in RAM. ## HubSpot CRM Integration HubSpot offers a REST API and webhooks for real-time sync. Authentication uses private apps (access token) or OAuth for public apps. The CRM API covers contacts, companies, deals, and tickets. Use the Search API for complex queries. Webhook subscriptions require a valid endpoint that responds to verification challenges. ## Xero Accounting Integration Xero uses OAuth 2.0. The API base is https://api.xero.com/api.xro/2.0/. Endpoints include Invoices, Contacts, Payments, and BankTransactions. Connections are tenant-specific—multi-tenant apps must handle organization switching. Rate limits: 60 calls per minute per organization. ## PostgreSQL Best Practices Use connection pooling (PgBouncer) for web applications. Index foreign keys and frequently queried columns. Avoid N+1 queries—use JOINs or batch loading. For large tables, consider partitioning by date. Always use parameterized queries to prevent SQL injection. ## Redis Caching Patterns Use Redis for session storage, rate limiting, and cache-aside patterns. Set TTLs on cached data to prevent stale reads. Consider Redis Cluster for high availability. Monitor memory usage—Redis holds everything in RAM. ## HubSpot CRM Integration HubSpot offers a REST API and webhooks for real-time sync. Authentication uses private apps (access token) or OAuth for public apps. The CRM API covers contacts, companies, deals, and tickets. Use the Search API for complex queries. Webhook subscriptions require a valid endpoint that responds to verification challenges. ## Xero Accounting Integration Xero uses OAuth 2.0. The API base is https://api.xero.com/api.xro/2.0/. Endpoints include Invoices, Contacts, Payments, and BankTransactions. Connections are tenant-specific—multi-tenant apps must handle organization switching. Rate limits: 60 calls per minute per organization. ## PostgreSQL Best Practices Use connection pooling (PgBouncer) for web applications. Index foreign keys and frequently queried columns. Avoid N+1 queries—use JOINs or batch loading. For large tables, consider partitioning by date. Always use parameterized queries to prevent SQL injection. ## Redis Caching Patterns Use Redis for session storage, rate limiting, and cache-aside patterns. Set TTLs on cached data to prevent stale reads. Consider Redis Cluster for high availability. Monitor memory usage—Redis holds everything in RAM. ## HubSpot CRM Integration HubSpot offers a REST API and webhooks for real-time sync. Authentication uses private apps (access token) or OAuth for public apps. The CRM API covers contacts, companies, deals, and tickets. Use the Search API for complex queries. Webhook subscriptions require a valid endpoint that responds to verification challenges. ## Xero Accounting Integration Xero uses OAuth 2.0. The API base is https://api.xero.com/api.xro/2.0/. Endpoints include Invoices, Contacts, Payments, and BankTransactions. Connections are tenant-specific—multi-tenant apps must handle organization switching. Rate limits: 60 calls per minute per organization. ## PostgreSQL Best Practices Use connection pooling (PgBouncer) for web applications. Index foreign keys and frequently queried columns. Avoid N+1 queries—use JOINs or batch loading. For large tables, consider partitioning by date. Always use parameterized queries to prevent SQL injection. ## Redis Caching Patterns Use Redis for session storage, rate limiting, and cache-aside patterns. Set TTLs on cached data to prevent stale reads. Consider Redis Cluster for high availability. Monitor memory usage—Redis holds everything in RAM. ## HubSpot CRM Integration HubSpot offers a REST API and webhooks for real-time sync. Authentication uses private apps (access token) or OAuth for public apps. The CRM API covers contacts, companies, deals, and tickets. Use the Search API for complex queries. Webhook subscriptions require a valid endpoint that responds to verification challenges. ## Xero Accounting Integration Xero uses OAuth 2.0. The API base is https://api.xero.com/api.xro/2.0/. Endpoints include Invoices, Contacts, Payments, and BankTransactions. Connections are tenant-specific—multi-tenant apps must handle organization switching. Rate limits: 60 calls per minute per organization. ## PostgreSQL Best Practices Use connection pooling (PgBouncer) for web applications. Index foreign keys and frequently queried columns. Avoid N+1 queries—use JOINs or batch loading. For large tables, consider partitioning by date. Always use parameterized queries to prevent SQL injection. ## Redis Caching Patterns Use Redis for session storage, rate limiting, and cache-aside patterns. Set TTLs on cached data to prevent stale reads. Consider Redis Cluster for high availability. Monitor memory usage—Redis holds everything in RAM. ## HubSpot CRM Integration HubSpot offers a REST API and webhooks for real-time sync. Authentication uses private apps (access token) or OAuth for public apps. The CRM API covers contacts, companies, deals, and tickets. Use the Search API for complex queries. Webhook subscriptions require a valid endpoint that responds to verification challenges. ## Xero Accounting Integration Xero uses OAuth 2.0. The API base is https://api.xero.com/api.xro/2.0/. Endpoints include Invoices, Contacts, Payments, and BankTransactions. Connections are tenant-specific—multi-tenant apps must handle organization switching. Rate limits: 60 calls per minute per organization. ## PostgreSQL Best Practices Use connection pooling (PgBouncer) for web applications. Index foreign keys and frequently queried columns. Avoid N+1 queries—use JOINs or batch loading. For large tables, consider partitioning by date. Always use parameterized queries to prevent SQL injection. ## Redis Caching Patterns Use Redis for session storage, rate limiting, and cache-aside patterns. Set TTLs on cached data to prevent stale reads. Consider Redis Cluster for high availability. Monitor memory usage—Redis holds everything in RAM. ## HubSpot CRM Integration HubSpot offers a REST API and webhooks for real-time sync. Authentication uses private apps (access token) or OAuth for public apps. The CRM API covers contacts, companies, deals, and tickets. Use the Search API for complex queries. Webhook subscriptions require a valid endpoint that responds to verification challenges. ## Xero Accounting Integration Xero uses OAuth 2.0. The API base is https://api.xero.com/api.xro/2.0/. Endpoints include Invoices, Contacts, Payments, and BankTransactions. Connections are tenant-specific—multi-tenant apps must handle organization switching. Rate limits: 60 calls per minute per organization. ## PostgreSQL Best Practices Use connection pooling (PgBouncer) for web applications. Index foreign keys and frequently queried columns. Avoid N+1 queries—use JOINs or batch loading. For large tables, consider partitioning by date. Always use parameterized queries to prevent SQL injection. ## Redis Caching Patterns Use Redis for session storage, rate limiting, and cache-aside patterns. Set TTLs on cached data to prevent stale reads. Consider Redis Cluster for high availability. Monitor memory usage—Redis holds everything in RAM. ## HubSpot CRM Integration HubSpot offers a REST API and webhooks for real-time sync. Authentication uses private apps (access token) or OAuth for public apps. The CRM API covers contacts, companies, deals, and tickets. Use the Search API for complex queries. Webhook subscriptions require a valid endpoint that responds to verification challenges. ## Xero Accounting Integration Xero uses OAuth 2.0. The API base is https://api.xero.com/api.xro/2.0/. Endpoints include Invoices, Contacts, Payments, and BankTransactions. Connections are tenant-specific—multi-tenant apps must handle organization switching. Rate limits: 60 calls per minute per organization. ## PostgreSQL Best Practices Use connection pooling (PgBouncer) for web applications. Index foreign keys and frequently queried columns. Avoid N+1 queries—use JOINs or batch loading. For large tables, consider partitioning by date. Always use parameterized queries to prevent SQL injection. ## Redis Caching Patterns Use Redis for session storage, rate limiting, and cache-aside patterns. Set TTLs on cached data to prevent stale reads. Consider Redis Cluster for high availability. Monitor memory usage—Redis holds everything in RAM. ## HubSpot CRM Integration HubSpot offers a REST API and webhooks for real-time sync. Authentication uses private apps (access token) or OAuth for public apps. The CRM API covers contacts, companies, deals, and tickets. Use the Search API for complex queries. Webhook subscriptions require a valid endpoint that responds to verification challenges. ## Xero Accounting Integration Xero uses OAuth 2.0. The API base is https://api.xero.com/api.xro/2.0/. Endpoints include Invoices, Contacts, Payments, and BankTransactions. Connections are tenant-specific—multi-tenant apps must handle organization switching. Rate limits: 60 calls per minute per organization. ## PostgreSQL Best Practices Use connection pooling (PgBouncer) for web applications. Index foreign keys and frequently queried columns. Avoid N+1 queries—use JOINs or batch loading. For large tables, consider partitioning by date. Always use parameterized queries to prevent SQL injection. ## Redis Caching Patterns Use Redis for session storage, rate limiting, and cache-aside patterns. Set TTLs on cached data to prevent stale reads. Consider Redis Cluster for high availability. Monitor memory usage—Redis holds everything in RAM. ## HubSpot CRM Integration HubSpot offers a REST API and webhooks for real-time sync. Authentication uses private apps (access token) or OAuth for public apps. The CRM API covers contacts, companies, deals, and tickets. Use the Search API for complex queries. Webhook subscriptions require a valid endpoint that responds to verification challenges. ## Xero Accounting Integration Xero uses OAuth 2.0. The API base is https://api.xero.com/api.xro/2.0/. Endpoints include Invoices, Contacts, Payments, and BankTransactions. Connections are tenant-specific—multi-tenant apps must handle organization switching. Rate limits: 60 calls per minute per organization. ## PostgreSQL Best Practices Use connection pooling (PgBouncer) for web applications. Index foreign keys and frequently queried columns. Avoid N+1 queries—use JOINs or batch loading. For large tables, consider partitioning by date. Always use parameterized queries to prevent SQL injection. ## Redis Caching Patterns Use Redis for session storage, rate limiting, and cache-aside patterns. Set TTLs on cached data to prevent stale reads. Consider Redis Cluster for high availability. Monitor memory usage—Redis holds everything in RAM. ## HubSpot CRM Integration HubSpot offers a REST API and webhooks for real-time sync. Authentication uses private apps (access token) or OAuth for public apps. The CRM API covers contacts, companies, deals, and tickets. Use the Search API for complex queries. Webhook subscriptions require a valid endpoint that responds to verification challenges. ## Xero Accounting Integration Xero uses OAuth 2.0. The API base is https://api.xero.com/api.xro/2.0/. Endpoints include Invoices, Contacts, Payments, and BankTransactions. Connections are tenant-specific—multi-tenant apps must handle organization switching. Rate limits: 60 calls per minute per organization. ## PostgreSQL Best Practices Use connection pooling (PgBouncer) for web applications. Index foreign keys and frequently queried columns. Avoid N+1 queries—use JOINs or batch loading. For large tables, consider partitioning by date. Always use parameterized queries to prevent SQL injection. ## Redis Caching Patterns Use Redis for session storage, rate limiting, and cache-aside patterns. Set TTLs on cached data to prevent stale reads. Consider Redis Cluster for high availability. Monitor memory usage—Redis holds everything in RAM. ## HubSpot CRM Integration HubSpot offers a REST API and webhooks for real-time sync. Authentication uses private apps (access token) or OAuth for public apps. The CRM API covers contacts, companies, deals, and tickets. Use the Search API for complex queries. Webhook subscriptions require a valid endpoint that responds to verification challenges. ## Xero Accounting Integration Xero uses OAuth 2.0. The API base is https://api.xero.com/api.xro/2.0/. Endpoints include Invoices, Contacts, Payments, and BankTransactions. Connections are tenant-specific—multi-tenant apps must handle organization switching. Rate limits: 60 calls per minute per organization. ## PostgreSQL Best Practices Use connection pooling (PgBouncer) for web applications. Index foreign keys and frequently queried columns. Avoid N+1 queries—use JOINs or batch loading. For large tables, consider partitioning by date. Always use parameterized queries to prevent SQL injection. ## Redis Caching Patterns Use Redis for session storage, rate limiting, and cache-aside patterns. Set TTLs on cached data to prevent stale reads. Consider Redis Cluster for high availability. Monitor memory usage—Redis holds everything in RAM. ## HubSpot CRM Integration HubSpot offers a REST API and webhooks for real-time sync. Authentication uses private apps (access token) or OAuth for public apps. The CRM API covers contacts, companies, deals, and tickets. Use the Search API for complex queries. Webhook subscriptions require a valid endpoint that responds to verification challenges. ## Xero Accounting Integration Xero uses OAuth 2.0. The API base is https://api.xero.com/api.xro/2.0/. Endpoints include Invoices, Contacts, Payments, and BankTransactions. Connections are tenant-specific—multi-tenant apps must handle organization switching. Rate limits: 60 calls per minute per organization. ## PostgreSQL Best Practices Use connection pooling (PgBouncer) for web applications. Index foreign keys and frequently queried columns. Avoid N+1 queries—use JOINs or batch loading. For large tables, consider partitioning by date. Always use parameterized queries to prevent SQL injection. ## Redis Caching Patterns Use Redis for session storage, rate limiting, and cache-aside patterns. Set TTLs on cached data to prevent stale reads. Consider Redis Cluster for high availability. Monitor memory usage—Redis holds everything in RAM. ## HubSpot CRM Integration HubSpot offers a REST API and webhooks for real-time sync. Authentication uses private apps (access token) or OAuth for public apps. The CRM API covers contacts, companies, deals, and tickets. Use the Search API for complex queries. Webhook subscriptions require a valid endpoint that responds to verification challenges. ## Xero Accounting Integration Xero uses OAuth 2.0. The API base is https://api.xero.com/api.xro/2.0/. Endpoints include Invoices, Contacts, Payments, and BankTransactions. Connections are tenant-specific—multi-tenant apps must handle organization switching. Rate limits: 60 calls per minute per organization. ## PostgreSQL Best Practices Use connection pooling (PgBouncer) for web applications. Index foreign keys and frequently queried columns. Avoid N+1 queries—use JOINs or batch loading. For large tables, consider partitioning by date. Always use parameterized queries to prevent SQL injection. ## Redis Caching Patterns Use Redis for session storage, rate limiting, and cache-aside patterns. Set TTLs on cached data to prevent stale reads. Consider Redis Cluster for high availability. Monitor memory usage—Redis holds everything in RAM. ## HubSpot CRM Integration HubSpot offers a REST API and webhooks for real-time sync. Authentication uses private apps (access token) or OAuth for public apps. The CRM API covers contacts, companies, deals, and tickets. Use the Search API for complex queries. Webhook subscriptions require a valid endpoint that responds to verification challenges. ## Xero Accounting Integration Xero uses OAuth 2.0. The API base is https://api.xero.com/api.xro/2.0/. Endpoints include Invoices, Contacts, Payments, and BankTransactions. Connections are tenant-specific—multi-tenant apps must handle organization switching. Rate limits: 60 calls per minute per organization. ## PostgreSQL Best Practices Use connection pooling (PgBouncer) for web applications. Index foreign keys and frequently queried columns. Avoid N+1 queries—use JOINs or batch loading. For large tables, consider partitioning by date. Always use parameterized queries to prevent SQL injection. ## Redis Caching Patterns Use Redis for session storage, rate limiting, and cache-aside patterns. Set TTLs on cached data to prevent stale reads. Consider Redis Cluster for high availability. Monitor memory usage—Redis holds everything in RAM. ## HubSpot CRM Integration HubSpot offers a REST API and webhooks for real-time sync. Authentication uses private apps (access token) or OAuth for public apps. The CRM API covers contacts, companies, deals, and tickets. Use the Search API for complex queries. Webhook subscriptions require a valid endpoint that responds to verification challenges. ## Xero Accounting Integration Xero uses OAuth 2.0. The API base is https://api.xero.com/api.xro/2.0/. Endpoints include Invoices, Contacts, Payments, and BankTransactions. Connections are tenant-specific—multi-tenant apps must handle organization switching. Rate limits: 60 calls per minute per organization. ## PostgreSQL Best Practices Use connection pooling (PgBouncer) for web applications. Index foreign keys and frequently queried columns. Avoid N+1 queries—use JOINs or batch loading. For large tables, consider partitioning by date. Always use parameterized queries to prevent SQL injection. ## Redis Caching Patterns Use Redis for session storage, rate limiting, and cache-aside patterns. Set TTLs on cached data to prevent stale reads. Consider Redis Cluster for high availability. Monitor memory usage—Redis holds everything in RAM. ## HubSpot CRM Integration HubSpot offers a REST API and webhooks for real-time sync. Authentication uses private apps (access token) or OAuth for public apps. The CRM API covers contacts, companies, deals, and tickets. Use the Search API for complex queries. Webhook subscriptions require a valid endpoint that responds to verification challenges. ## Xero Accounting Integration Xero uses OAuth 2.0. The API base is https://api.xero.com/api.xro/2.0/. Endpoints include Invoices, Contacts, Payments, and BankTransactions. Connections are tenant-specific—multi-tenant apps must handle organization switching. Rate limits: 60 calls per minute per organization. ## PostgreSQL Best Practices Use connection pooling (PgBouncer) for web applications. Index foreign keys and frequently queried columns. Avoid N+1 queries—use JOINs or batch loading. For large tables, consider partitioning by date. Always use parameterized queries to prevent SQL injection. ## Redis Caching Patterns Use Redis for session storage, rate limiting, and cache-aside patterns. Set TTLs on cached data to prevent stale reads. Consider Redis Cluster for high availability. Monitor memory usage—Redis holds everything in RAM. ## HubSpot CRM Integration HubSpot offers a REST API and webhooks for real-time sync. Authentication uses private apps (access token) or OAuth for public apps. The CRM API covers contacts, companies, deals, and tickets. Use the Search API for complex queries. Webhook subscriptions require a valid endpoint that responds to verification challenges. ## Xero Accounting Integration Xero uses OAuth 2.0. The API base is https://api.xero.com/api.xro/2.0/. Endpoints include Invoices, Contacts, Payments, and BankTransactions. Connections are tenant-specific—multi-tenant apps must handle organization switching. Rate limits: 60 calls per minute per organization. ## PostgreSQL Best Practices Use connection pooling (PgBouncer) for web applications. Index foreign keys and frequently queried columns. Avoid N+1 queries—use JOINs or batch loading. For large tables, consider partitioning by date. Always use parameterized queries to prevent SQL injection. ## Redis Caching Patterns Use Redis for session storage, rate limiting, and cache-aside patterns. Set TTLs on cached data to prevent stale reads. Consider Redis Cluster for high availability. Monitor memory usage—Redis holds everything in RAM. ## HubSpot CRM Integration HubSpot offers a REST API and webhooks for real-time sync. Authentication uses private apps (access token) or OAuth for public apps. The CRM API covers contacts, companies, deals, and tickets. Use the Search API for complex queries. Webhook subscriptions require a valid endpoint that responds to verification challenges. ## Xero Accounting Integration Xero uses OAuth 2.0. The API base is https://api.xero.com/api.xro/2.0/. Endpoints include Invoices, Contacts, Payments, and BankTransactions. Connections are tenant-specific—multi-tenant apps must handle organization switching. Rate limits: 60 calls per minute per organization. ## PostgreSQL Best Practices Use connection pooling (PgBouncer) for web applications. Index foreign keys and frequently queried columns. Avoid N+1 queries—use JOINs or batch loading. For large tables, consider partitioning by date. Always use parameterized queries to prevent SQL injection. ## Redis Caching Patterns Use Redis for session storage, rate limiting, and cache-aside patterns. Set TTLs on cached data to prevent stale reads. Consider Redis Cluster for high availability. Monitor memory usage—Redis holds everything in RAM. ## HubSpot CRM Integration HubSpot offers a REST API and webhooks for real-time sync. Authentication uses private apps (access token) or OAuth for public apps. The CRM API covers contacts, companies, deals, and tickets. Use the Search API for complex queries. Webhook subscriptions require a valid endpoint that responds to verification challenges. ## Xero Accounting Integration Xero uses OAuth 2.0. The API base is https://api.xero.com/api.xro/2.0/. Endpoints include Invoices, Contacts, Payments, and BankTransactions. Connections are tenant-specific—multi-tenant apps must handle organization switching. Rate limits: 60 calls per minute per organization. ## PostgreSQL Best Practices Use connection pooling (PgBouncer) for web applications. Index foreign keys and frequently queried columns. Avoid N+1 queries—use JOINs or batch loading. For large tables, consider partitioning by date. Always use parameterized queries to prevent SQL injection. ## Redis Caching Patterns Use Redis for session storage, rate limiting, and cache-aside patterns. Set TTLs on cached data to prevent stale reads. Consider Redis Cluster for high availability. Monitor memory usage—Redis holds everything in RAM. ## HubSpot CRM Integration HubSpot offers a REST API and webhooks for real-time sync. Authentication uses private apps (access token) or OAuth for public apps. The CRM API covers contacts, companies, deals, and tickets. Use the Search API for complex queries. Webhook subscriptions require a valid endpoint that responds to verification challenges. ## Xero Accounting Integration Xero uses OAuth 2.0. The API base is https://api.xero.com/api.xro/2.0/. Endpoints include Invoices, Contacts, Payments, and BankTransactions. Connections are tenant-specific—multi-tenant apps must handle organization switching. Rate limits: 60 calls per minute per organization. ## PostgreSQL Best Practices Use connection pooling (PgBouncer) for web applications. Index foreign keys and frequently queried columns. Avoid N+1 queries—use JOINs or batch loading. For large tables, consider partitioning by date. Always use parameterized queries to prevent SQL injection. ## Redis Caching Patterns Use Redis for session storage, rate limiting, and cache-aside patterns. Set TTLs on cached data to prevent stale reads. Consider Redis Cluster for high availability. Monitor memory usage—Redis holds everything in RAM. ## HubSpot CRM Integration HubSpot offers a REST API and webhooks for real-time sync. Authentication uses private apps (access token) or OAuth for public apps. The CRM API covers contacts, companies, deals, and tickets. Use the Search API for complex queries. Webhook subscriptions require a valid endpoint that responds to verification challenges. ## Xero Accounting Integration Xero uses OAuth 2.0. The API base is https://api.xero.com/api.xro/2.0/. Endpoints include Invoices, Contacts, Payments, and BankTransactions. Connections are tenant-specific—multi-tenant apps must handle organization switching. Rate limits: 60 calls per minute per organization. ## PostgreSQL Best Practices Use connection pooling (PgBouncer) for web applications. Index foreign keys and frequently queried columns. Avoid N+1 queries—use JOINs or batch loading. For large tables, consider partitioning by date. Always use parameterized queries to prevent SQL injection. ## Redis Caching Patterns Use Redis for session storage, rate limiting, and cache-aside patterns. Set TTLs on cached data to prevent stale reads. Consider Redis Cluster for high availability. Monitor memory usage—Redis holds everything in RAM. ## HubSpot CRM Integration HubSpot offers a REST API and webhooks for real-time sync. Authentication uses private apps (access token) or OAuth for public apps. The CRM API covers contacts, companies, deals, and tickets. Use the Search API for complex queries. Webhook subscriptions require a valid endpoint that responds to verification challenges. ## Xero Accounting Integration Xero uses OAuth 2.0. The API base is https://api.xero.com/api.xro/2.0/. Endpoints include Invoices, Contacts, Payments, and BankTransactions. Connections are tenant-specific—multi-tenant apps must handle organization switching. Rate limits: 60 calls per minute per organization. ## PostgreSQL Best Practices Use connection pooling (PgBouncer) for web applications. Index foreign keys and frequently queried columns. Avoid N+1 queries—use JOINs or batch loading. For large tables, consider partitioning by date. Always use parameterized queries to prevent SQL injection. ## Redis Caching Patterns Use Redis for session storage, rate limiting, and cache-aside patterns. Set TTLs on cached data to prevent stale reads. Consider Redis Cluster for high availability. Monitor memory usage—Redis holds everything in RAM. ## HubSpot CRM Integration HubSpot offers a REST API and webhooks for real-time sync. Authentication uses private apps (access token) or OAuth for public apps. The CRM API covers contacts, companies, deals, and tickets. Use the Search API for complex queries. Webhook subscriptions require a valid endpoint that responds to verification challenges. ## Xero Accounting Integration Xero uses OAuth 2.0. The API base is https://api.xero.com/api.xro/2.0/. Endpoints include Invoices, Contacts, Payments, and BankTransactions. Connections are tenant-specific—multi-tenant apps must handle organization switching. Rate limits: 60 calls per minute per organization. ## PostgreSQL Best Practices Use connection pooling (PgBouncer) for web applications. Index foreign keys and frequently queried columns. Avoid N+1 queries—use JOINs or batch loading. For large tables, consider partitioning by date. Always use parameterized queries to prevent SQL injection. ## Redis Caching Patterns Use Redis for session storage, rate limiting, and cache-aside patterns. Set TTLs on cached data to prevent stale reads. Consider Redis Cluster for high availability. Monitor memory usage—Redis holds everything in RAM. ## HubSpot CRM Integration HubSpot offers a REST API and webhooks for real-time sync. Authentication uses private apps (access token) or OAuth for public apps. The CRM API covers contacts, companies, deals, and tickets. Use the Search API for complex queries. Webhook subscriptions require a valid endpoint that responds to verification challenges. ## Xero Accounting Integration Xero uses OAuth 2.0. The API base is https://api.xero.com/api.xro/2.0/. Endpoints include Invoices, Contacts, Payments, and BankTransactions. Connections are tenant-specific—multi-tenant apps must handle organization switching. Rate limits: 60 calls per minute per organization. ## PostgreSQL Best Practices Use connection pooling (PgBouncer) for web applications. Index foreign keys and frequently queried columns. Avoid N+1 queries—use JOINs or batch loading. For large tables, consider partitioning by date. Always use parameterized queries to prevent SQL injection. ## Redis Caching Patterns Use Redis for session storage, rate limiting, and cache-aside patterns. Set TTLs on cached data to prevent stale reads. Consider Redis Cluster for high availability. Monitor memory usage—Redis holds everything in RAM. ## HubSpot CRM Integration HubSpot offers a REST API and webhooks for real-time sync. Authentication uses private apps (access token) or OAuth for public apps. The CRM API covers contacts, companies, deals, and tickets. Use the Search API for complex queries. Webhook subscriptions require a valid endpoint that responds to verification challenges. ## Xero Accounting Integration Xero uses OAuth 2.0. The API base is https://api.xero.com/api.xro/2.0/. Endpoints include Invoices, Contacts, Payments, and BankTransactions. Connections are tenant-specific—multi-tenant apps must handle organization switching. Rate limits: 60 calls per minute per organization. ## PostgreSQL Best Practices Use connection pooling (PgBouncer) for web applications. Index foreign keys and frequently queried columns. Avoid N+1 queries—use JOINs or batch loading. For large tables, consider partitioning by date. Always use parameterized queries to prevent SQL injection. ## Redis Caching Patterns Use Redis for session storage, rate limiting, and cache-aside patterns. Set TTLs on cached data to prevent stale reads. Consider Redis Cluster for high availability. Monitor memory usage—Redis holds everything in RAM. ## HubSpot CRM Integration HubSpot offers a REST API and webhooks for real-time sync. Authentication uses private apps (access token) or OAuth for public apps. The CRM API covers contacts, companies, deals, and tickets. Use the Search API for complex queries. Webhook subscriptions require a valid endpoint that responds to verification challenges. ## Xero Accounting Integration Xero uses OAuth 2.0. The API base is https://api.xero.com/api.xro/2.0/. Endpoints include Invoices, Contacts, Payments, and BankTransactions. Connections are tenant-specific—multi-tenant apps must handle organization switching. Rate limits: 60 calls per minute per organization. ## PostgreSQL Best Practices Use connection pooling (PgBouncer) for web applications. Index foreign keys and frequently queried columns. Avoid N+1 queries—use JOINs or batch loading. For large tables, consider partitioning by date. Always use parameterized queries to prevent SQL injection. ## Redis Caching Patterns Use Redis for session storage, rate limiting, and cache-aside patterns. Set TTLs on cached data to prevent stale reads. Consider Redis Cluster for high availability. Monitor memory usage—Redis holds everything in RAM. ## HubSpot CRM Integration HubSpot offers a REST API and webhooks for real-time sync. Authentication uses private apps (access token) or OAuth for public apps. The CRM API covers contacts, companies, deals, and tickets. Use the Search API for complex queries. Webhook subscriptions require a valid endpoint that responds to verification challenges. ## Xero Accounting Integration Xero uses OAuth 2.0. The API base is https://api.xero.com/api.xro/2.0/. Endpoints include Invoices, Contacts, Payments, and BankTransactions. Connections are tenant-specific—multi-tenant apps must handle organization switching. Rate limits: 60 calls per minute per organization. ## PostgreSQL Best Practices Use connection pooling (PgBouncer) for web applications. Index foreign keys and frequently queried columns. Avoid N+1 queries—use JOINs or batch loading. For large tables, consider partitioning by date. Always use parameterized queries to prevent SQL injection. ## Redis Caching Patterns Use Redis for session storage, rate limiting, and cache-aside patterns. Set TTLs on cached data to prevent stale reads. Consider Redis Cluster for high availability. Monitor memory usage—Redis holds everything in RAM. ## HubSpot CRM Integration HubSpot offers a REST API and webhooks for real-time sync. Authentication uses private apps (access token) or OAuth for public apps. The CRM API covers contacts, companies, deals, and tickets. Use the Search API for complex queries. Webhook subscriptions require a valid endpoint that responds to verification challenges. ## Xero Accounting Integration Xero uses OAuth 2.0. The API base is https://api.xero.com/api.xro/2.0/. Endpoints include Invoices, Contacts, Payments, and BankTransactions. Connections are tenant-specific—multi-tenant apps must handle organization switching. Rate limits: 60 calls per minute per organization. ## PostgreSQL Best Practices Use connection pooling (PgBouncer) for web applications. Index foreign keys and frequently queried columns. Avoid N+1 queries—use JOINs or batch loading. For large tables, consider partitioning by date. Always use parameterized queries to prevent SQL injection. ## Redis Caching Patterns Use Redis for session storage, rate limiting, and cache-aside patterns. Set TTLs on cached data to prevent stale reads. Consider Redis Cluster for high availability. Monitor memory usage—Redis holds everything in RAM. ## HubSpot CRM Integration HubSpot offers a REST API and webhooks for real-time sync. Authentication uses private apps (access token) or OAuth for public apps. The CRM API covers contacts, companies, deals, and tickets. Use the Search API for complex queries. Webhook subscriptions require a valid endpoint that responds to verification challenges. ## Xero Accounting Integration Xero uses OAuth 2.0. The API base is https://api.xero.com/api.xro/2.0/. Endpoints include Invoices, Contacts, Payments, and BankTransactions. Connections are tenant-specific—multi-tenant apps must handle organization switching. Rate limits: 60 calls per minute per organization. ## PostgreSQL Best Practices Use connection pooling (PgBouncer) for web applications. Index foreign keys and frequently queried columns. Avoid N+1 queries—use JOINs or batch loading. For large tables, consider partitioning by date. Always use parameterized queries to prevent SQL injection. ## Redis Caching Patterns Use Redis for session storage, rate limiting, and cache-aside patterns. Set TTLs on cached data to prevent stale reads. Consider Redis Cluster for high availability. Monitor memory usage—Redis holds everything in RAM. ## HubSpot CRM Integration HubSpot offers a REST API and webhooks for real-time sync. Authentication uses private apps (access token) or OAuth for public apps. The CRM API covers contacts, companies, deals, and tickets. Use the Search API for complex queries. Webhook subscriptions require a valid endpoint that responds to verification challenges. ## Xero Accounting Integration Xero uses OAuth 2.0. The API base is https://api.xero.com/api.xro/2.0/. Endpoints include Invoices, Contacts, Payments, and BankTransactions. Connections are tenant-specific—multi-tenant apps must handle organization switching. Rate limits: 60 calls per minute per organization. ## PostgreSQL Best Practices Use connection pooling (PgBouncer) for web applications. Index foreign keys and frequently queried columns. Avoid N+1 queries—use JOINs or batch loading. For large tables, consider partitioning by date. Always use parameterized queries to prevent SQL injection. ## Redis Caching Patterns Use Redis for session storage, rate limiting, and cache-aside patterns. Set TTLs on cached data to prevent stale reads. Consider Redis Cluster for high availability. Monitor memory usage—Redis holds everything in RAM. ## HubSpot CRM Integration HubSpot offers a REST API and webhooks for real-time sync. Authentication uses private apps (access token) or OAuth for public apps. The CRM API covers contacts, companies, deals, and tickets. Use the Search API for complex queries. Webhook subscriptions require a valid endpoint that responds to verification challenges. ## Xero Accounting Integration Xero uses OAuth 2.0. The API base is https://api.xero.com/api.xro/2.0/. Endpoints include Invoices, Contacts, Payments, and BankTransactions. Connections are tenant-specific—multi-tenant apps must handle organization switching. Rate limits: 60 calls per minute per organization. ## PostgreSQL Best Practices Use connection pooling (PgBouncer) for web applications. Index foreign keys and frequently queried columns. Avoid N+1 queries—use JOINs or batch loading. For large tables, consider partitioning by date. Always use parameterized queries to prevent SQL injection. ## Redis Caching Patterns Use Redis for session storage, rate limiting, and cache-aside patterns. Set TTLs on cached data to prevent stale reads. Consider Redis Cluster for high availability. Monitor memory usage—Redis holds everything in RAM. ## HubSpot CRM Integration HubSpot offers a REST API and webhooks for real-time sync. Authentication uses private apps (access token) or OAuth for public apps. The CRM API covers contacts, companies, deals, and tickets. Use the Search API for complex queries. Webhook subscriptions require a valid endpoint that responds to verification challenges. ## Xero Accounting Integration Xero uses OAuth 2.0. The API base is https://api.xero.com/api.xro/2.0/. Endpoints include Invoices, Contacts, Payments, and BankTransactions. Connections are tenant-specific—multi-tenant apps must handle organization switching. Rate limits: 60 calls per minute per organization. ## PostgreSQL Best Practices Use connection pooling (PgBouncer) for web applications. Index foreign keys and frequently queried columns. Avoid N+1 queries—use JOINs or batch loading. For large tables, consider partitioning by date. Always use parameterized queries to prevent SQL injection. ## Redis Caching Patterns Use Redis for session storage, rate limiting, and cache-aside patterns. Set TTLs on cached data to prevent stale reads. Consider Redis Cluster for high availability. Monitor memory usage—Redis holds everything in RAM. ## HubSpot CRM Integration HubSpot offers a REST API and webhooks for real-time sync. Authentication uses private apps (access token) or OAuth for public apps. The CRM API covers contacts, companies, deals, and tickets. Use the Search API for complex queries. Webhook subscriptions require a valid endpoint that responds to verification challenges. ## Xero Accounting Integration Xero uses OAuth 2.0. The API base is https://api.xero.com/api.xro/2.0/. Endpoints include Invoices, Contacts, Payments, and BankTransactions. Connections are tenant-specific—multi-tenant apps must handle organization switching. Rate limits: 60 calls per minute per organization. ## PostgreSQL Best Practices Use connection pooling (PgBouncer) for web applications. Index foreign keys and frequently queried columns. Avoid N+1 queries—use JOINs or batch loading. For large tables, consider partitioning by date. Always use parameterized queries to prevent SQL injection. ## Redis Caching Patterns Use Redis for session storage, rate limiting, and cache-aside patterns. Set TTLs on cached data to prevent stale reads. Consider Redis Cluster for high availability. Monitor memory usage—Redis holds everything in RAM. ## HubSpot CRM Integration HubSpot offers a REST API and webhooks for real-time sync. Authentication uses private apps (access token) or OAuth for public apps. The CRM API covers contacts, companies, deals, and tickets. Use the Search API for complex queries. Webhook subscriptions require a valid endpoint that responds to verification challenges. ## Xero Accounting Integration Xero uses OAuth 2.0. The API base is https://api.xero.com/api.xro/2.0/. Endpoints include Invoices, Contacts, Payments, and BankTransactions. Connections are tenant-specific—multi-tenant apps must handle organization switching. Rate limits: 60 calls per minute per organization. ## PostgreSQL Best Practices Use connection pooling (PgBouncer) for web applications. Index foreign keys and frequently queried columns. Avoid N+1 queries—use JOINs or batch loading. For large tables, consider partitioning by date. Always use parameterized queries to prevent SQL injection. ## Redis Caching Patterns Use Redis for session storage, rate limiting, and cache-aside patterns. Set TTLs on cached data to prevent stale reads. Consider Redis Cluster for high availability. Monitor memory usage—Redis holds everything in RAM. ## HubSpot CRM Integration HubSpot offers a REST API and webhooks for real-time sync. Authentication uses private apps (access token) or OAuth for public apps. The CRM API covers contacts, companies, deals, and tickets. Use the Search API for complex queries. Webhook subscriptions require a valid endpoint that responds to verification challenges. ## Xero Accounting Integration Xero uses OAuth 2.0. The API base is https://api.xero.com/api.xro/2.0/. Endpoints include Invoices, Contacts, Payments, and BankTransactions. Connections are tenant-specific—multi-tenant apps must handle organization switching. Rate limits: 60 calls per minute per organization. ## PostgreSQL Best Practices Use connection pooling (PgBouncer) for web applications. Index foreign keys and frequently queried columns. Avoid N+1 queries—use JOINs or batch loading. For large tables, consider partitioning by date. Always use parameterized queries to prevent SQL injection. ## Redis Caching Patterns Use Redis for session storage, rate limiting, and cache-aside patterns. Set TTLs on cached data to prevent stale reads. Consider Redis Cluster for high availability. Monitor memory usage—Redis holds everything in RAM. ## HubSpot CRM Integration HubSpot offers a REST API and webhooks for real-time sync. Authentication uses private apps (access token) or OAuth for public apps. The CRM API covers contacts, companies, deals, and tickets. Use the Search API for complex queries. Webhook subscriptions require a valid endpoint that responds to verification challenges. ## Xero Accounting Integration Xero uses OAuth 2.0. The API base is https://api.xero.com/api.xro/2.0/. Endpoints include Invoices, Contacts, Payments, and BankTransactions. Connections are tenant-specific—multi-tenant apps must handle organization switching. Rate limits: 60 calls per minute per organization. ## PostgreSQL Best Practices Use connection pooling (PgBouncer) for web applications. Index foreign keys and frequently queried columns. Avoid N+1 queries—use JOINs or batch loading. For large tables, consider partitioning by date. Always use parameterized queries to prevent SQL injection. ## Redis Caching Patterns Use Redis for session storage, rate limiting, and cache-aside patterns. Set TTLs on cached data to prevent stale reads. Consider Redis Cluster for high availability. Monitor memory usage—Redis holds everything in RAM. ## HubSpot CRM Integration HubSpot offers a REST API and webhooks for real-time sync. Authentication uses private apps (access token) or OAuth for public apps. The CRM API covers contacts, companies, deals, and tickets. Use the Search API for complex queries. Webhook subscriptions require a valid endpoint that responds to verification challenges. ## Xero Accounting Integration Xero uses OAuth 2.0. The API base is https://api.xero.com/api.xro/2.0/. Endpoints include Invoices, Contacts, Payments, and BankTransactions. Connections are tenant-specific—multi-tenant apps must handle organization switching. Rate limits: 60 calls per minute per organization. ## PostgreSQL Best Practices Use connection pooling (PgBouncer) for web applications. Index foreign keys and frequently queried columns. Avoid N+1 queries—use JOINs or batch loading. For large tables, consider partitioning by date. Always use parameterized queries to prevent SQL injection. ## Redis Caching Patterns Use Redis for session storage, rate limiting, and cache-aside patterns. Set TTLs on cached data to prevent stale reads. Consider Redis Cluster for high availability. Monitor memory usage—Redis holds everything in RAM. ## HubSpot CRM Integration HubSpot offers a REST API and webhooks for real-time sync. Authentication uses private apps (access token) or OAuth for public apps. The CRM API covers contacts, companies, deals, and tickets. Use the Search API for complex queries. Webhook subscriptions require a valid endpoint that responds to verification challenges. ## Xero Accounting Integration Xero uses OAuth 2.0. The API base is https://api.xero.com/api.xro/2.0/. Endpoints include Invoices, Contacts, Payments, and BankTransactions. Connections are tenant-specific—multi-tenant apps must handle organization switching. Rate limits: 60 calls per minute per organization. ## PostgreSQL Best Practices Use connection pooling (PgBouncer) for web applications. Index foreign keys and frequently queried columns. Avoid N+1 queries—use JOINs or batch loading. For large tables, consider partitioning by date. Always use parameterized queries to prevent SQL injection. ## Redis Caching Patterns Use Redis for session storage, rate limiting, and cache-aside patterns. Set TTLs on cached data to prevent stale reads. Consider Redis Cluster for high availability. Monitor memory usage—Redis holds everything in RAM. ## HubSpot CRM Integration HubSpot offers a REST API and webhooks for real-time sync. Authentication uses private apps (access token) or OAuth for public apps. The CRM API covers contacts, companies, deals, and tickets. Use the Search API for complex queries. Webhook subscriptions require a valid endpoint that responds to verification challenges. ## Xero Accounting Integration Xero uses OAuth 2.0. The API base is https://api.xero.com/api.xro/2.0/. Endpoints include Invoices, Contacts, Payments, and BankTransactions. Connections are tenant-specific—multi-tenant apps must handle organization switching. Rate limits: 60 calls per minute per organization. ## PostgreSQL Best Practices Use connection pooling (PgBouncer) for web applications. Index foreign keys and frequently queried columns. Avoid N+1 queries—use JOINs or batch loading. For large tables, consider partitioning by date. Always use parameterized queries to prevent SQL injection. ## Redis Caching Patterns Use Redis for session storage, rate limiting, and cache-aside patterns. Set TTLs on cached data to prevent stale reads. Consider Redis Cluster for high availability. Monitor memory usage—Redis holds everything in RAM. ## HubSpot CRM Integration HubSpot offers a REST API and webhooks for real-time sync. Authentication uses private apps (access token) or OAuth for public apps. The CRM API covers contacts, companies, deals, and tickets. Use the Search API for complex queries. Webhook subscriptions require a valid endpoint that responds to verification challenges. ## Xero Accounting Integration Xero uses OAuth 2.0. The API base is https://api.xero.com/api.xro/2.0/. Endpoints include Invoices, Contacts, Payments, and BankTransactions. Connections are tenant-specific—multi-tenant apps must handle organization switching. Rate limits: 60 calls per minute per organization. ## PostgreSQL Best Practices Use connection pooling (PgBouncer) for web applications. Index foreign keys and frequently queried columns. Avoid N+1 queries—use JOINs or batch loading. For large tables, consider partitioning by date. Always use parameterized queries to prevent SQL injection. ## Redis Caching Patterns Use Redis for session storage, rate limiting, and cache-aside patterns. Set TTLs on cached data to prevent stale reads. Consider Redis Cluster for high availability. Monitor memory usage—Redis holds everything in RAM. ## HubSpot CRM Integration HubSpot offers a REST API and webhooks for real-time sync. Authentication uses private apps (access token) or OAuth for public apps. The CRM API covers contacts, companies, deals, and tickets. Use the Search API for complex queries. Webhook subscriptions require a valid endpoint that responds to verification challenges. ## Xero Accounting Integration Xero uses OAuth 2.0. The API base is https://api.xero.com/api.xro/2.0/. Endpoints include Invoices, Contacts, Payments, and BankTransactions. Connections are tenant-specific—multi-tenant apps must handle organization switching. Rate limits: 60 calls per minute per organization. ## PostgreSQL Best Practices Use connection pooling (PgBouncer) for web applications. Index foreign keys and frequently queried columns. Avoid N+1 queries—use JOINs or batch loading. For large tables, consider partitioning by date. Always use parameterized queries to prevent SQL injection. ## Redis Caching Patterns Use Redis for session storage, rate limiting, and cache-aside patterns. Set TTLs on cached data to prevent stale reads. Consider Redis Cluster for high availability. Monitor memory usage—Redis holds everything in RAM. ## HubSpot CRM Integration HubSpot offers a REST API and webhooks for real-time sync. Authentication uses private apps (access token) or OAuth for public apps. The CRM API covers contacts, companies, deals, and tickets. Use the Search API for complex queries. Webhook subscriptions require a valid endpoint that responds to verification challenges. ## Xero Accounting Integration Xero uses OAuth 2.0. The API base is https://api.xero.com/api.xro/2.0/. Endpoints include Invoices, Contacts, Payments, and BankTransactions. Connections are tenant-specific—multi-tenant apps must handle organization switching. Rate limits: 60 calls per minute per organization. ## PostgreSQL Best Practices Use connection pooling (PgBouncer) for web applications. Index foreign keys and frequently queried columns. Avoid N+1 queries—use JOINs or batch loading. For large tables, consider partitioning by date. Always use parameterized queries to prevent SQL injection. ## Redis Caching Patterns Use Redis for session storage, rate limiting, and cache-aside patterns. Set TTLs on cached data to prevent stale reads. Consider Redis Cluster for high availability. Monitor memory usage—Redis holds everything in RAM. ## HubSpot CRM Integration HubSpot offers a REST API and webhooks for real-time sync. Authentication uses private apps (access token) or OAuth for public apps. The CRM API covers contacts, companies, deals, and tickets. Use the Search API for complex queries. Webhook subscriptions require a valid endpoint that responds to verification challenges. ## Xero Accounting Integration Xero uses OAuth 2.0. The API base is https://api.xero.com/api.xro/2.0/. Endpoints include Invoices, Contacts, Payments, and BankTransactions. Connections are tenant-specific—multi-tenant apps must handle organization switching. Rate limits: 60 calls per minute per organization. ## PostgreSQL Best Practices Use connection pooling (PgBouncer) for web applications. Index foreign keys and frequently queried columns. Avoid N+1 queries—use JOINs or batch loading. For large tables, consider partitioning by date. Always use parameterized queries to prevent SQL injection. ## Redis Caching Patterns Use Redis for session storage, rate limiting, and cache-aside patterns. Set TTLs on cached data to prevent stale reads. Consider Redis Cluster for high availability. Monitor memory usage—Redis holds everything in RAM. ## HubSpot CRM Integration HubSpot offers a REST API and webhooks for real-time sync. Authentication uses private apps (access token) or OAuth for public apps. The CRM API covers contacts, companies, deals, and tickets. Use the Search API for complex queries. Webhook subscriptions require a valid endpoint that responds to verification challenges. ## Xero Accounting Integration Xero uses OAuth 2.0. The API base is https://api.xero.com/api.xro/2.0/. Endpoints include Invoices, Contacts, Payments, and BankTransactions. Connections are tenant-specific—multi-tenant apps must handle organization switching. Rate limits: 60 calls per minute per organization. ## PostgreSQL Best Practices Use connection pooling (PgBouncer) for web applications. Index foreign keys and frequently queried columns. Avoid N+1 queries—use JOINs or batch loading. For large tables, consider partitioning by date. Always use parameterized queries to prevent SQL injection. ## Redis Caching Patterns Use Redis for session storage, rate limiting, and cache-aside patterns. Set TTLs on cached data to prevent stale reads. Consider Redis Cluster for high availability. Monitor memory usage—Redis holds everything in RAM. ## HubSpot CRM Integration HubSpot offers a REST API and webhooks for real-time sync. Authentication uses private apps (access token) or OAuth for public apps. The CRM API covers contacts, companies, deals, and tickets. Use the Search API for complex queries. Webhook subscriptions require a valid endpoint that responds to verification challenges. ## Xero Accounting Integration Xero uses OAuth 2.0. The API base is https://api.xero.com/api.xro/2.0/. Endpoints include Invoices, Contacts, Payments, and BankTransactions. Connections are tenant-specific—multi-tenant apps must handle organization switching. Rate limits: 60 calls per minute per organization. ## PostgreSQL Best Practices Use connection pooling (PgBouncer) for web applications. Index foreign keys and frequently queried columns. Avoid N+1 queries—use JOINs or batch loading. For large tables, consider partitioning by date. Always use parameterized queries to prevent SQL injection. ## Redis Caching Patterns Use Redis for session storage, rate limiting, and cache-aside patterns. Set TTLs on cached data to prevent stale reads. Consider Redis Cluster for high availability. Monitor memory usage—Redis holds everything in RAM. ## HubSpot CRM Integration HubSpot offers a REST API and webhooks for real-time sync. Authentication uses private apps (access token) or OAuth for public apps. The CRM API covers contacts, companies, deals, and tickets. Use the Search API for complex queries. Webhook subscriptions require a valid endpoint that responds to verification challenges. ## Xero Accounting Integration Xero uses OAuth 2.0. The API base is https://api.xero.com/api.xro/2.0/. Endpoints include Invoices, Contacts, Payments, and BankTransactions. Connections are tenant-specific—multi-tenant apps must handle organization switching. Rate limits: 60 calls per minute per organization. ## PostgreSQL Best Practices Use connection pooling (PgBouncer) for web applications. Index foreign keys and frequently queried columns. Avoid N+1 queries—use JOINs or batch loading. For large tables, consider partitioning by date. Always use parameterized queries to prevent SQL injection. ## Redis Caching Patterns Use Redis for session storage, rate limiting, and cache-aside patterns. Set TTLs on cached data to prevent stale reads. Consider Redis Cluster for high availability. Monitor memory usage—Redis holds everything in RAM. ## HubSpot CRM Integration HubSpot offers a REST API and webhooks for real-time sync. Authentication uses private apps (access token) or OAuth for public apps. The CRM API covers contacts, companies, deals, and tickets. Use the Search API for complex queries. Webhook subscriptions require a valid endpoint that responds to verification challenges. ## Xero Accounting Integration Xero uses OAuth 2.0. The API base is https://api.xero.com/api.xro/2.0/. Endpoints include Invoices, Contacts, Payments, and BankTransactions. Connections are tenant-specific—multi-tenant apps must handle organization switching. Rate limits: 60 calls per minute per organization. ## PostgreSQL Best Practices Use connection pooling (PgBouncer) for web applications. Index foreign keys and frequently queried columns. Avoid N+1 queries—use JOINs or batch loading. For large tables, consider partitioning by date. Always use parameterized queries to prevent SQL injection. ## Redis Caching Patterns Use Redis for session storage, rate limiting, and cache-aside patterns. Set TTLs on cached data to prevent stale reads. Consider Redis Cluster for high availability. Monitor memory usage—Redis holds everything in RAM. ## HubSpot CRM Integration HubSpot offers a REST API and webhooks for real-time sync. Authentication uses private apps (access token) or OAuth for public apps. The CRM API covers contacts, companies, deals, and tickets. Use the Search API for complex queries. Webhook subscriptions require a valid endpoint that responds to verification challenges. ## Xero Accounting Integration Xero uses OAuth 2.0. The API base is https://api.xero.com/api.xro/2.0/. Endpoints include Invoices, Contacts, Payments, and BankTransactions. Connections are tenant-specific—multi-tenant apps must handle organization switching. Rate limits: 60 calls per minute per organization. ## PostgreSQL Best Practices Use connection pooling (PgBouncer) for web applications. Index foreign keys and frequently queried columns. Avoid N+1 queries—use JOINs or batch loading. For large tables, consider partitioning by date. Always use parameterized queries to prevent SQL injection. ## Redis Caching Patterns Use Redis for session storage, rate limiting, and cache-aside patterns. Set TTLs on cached data to prevent stale reads. Consider Redis Cluster for high availability. Monitor memory usage—Redis holds everything in RAM. ## HubSpot CRM Integration HubSpot offers a REST API and webhooks for real-time sync. Authentication uses private apps (access token) or OAuth for public apps. The CRM API covers contacts, companies, deals, and tickets. Use the Search API for complex queries. Webhook subscriptions require a valid endpoint that responds to verification challenges. ## Xero Accounting Integration Xero uses OAuth 2.0. The API base is https://api.xero.com/api.xro/2.0/. Endpoints include Invoices, Contacts, Payments, and BankTransactions. Connections are tenant-specific—multi-tenant apps must handle organization switching. Rate limits: 60 calls per minute per organization. ## PostgreSQL Best Practices Use connection pooling (PgBouncer) for web applications. Index foreign keys and frequently queried columns. Avoid N+1 queries—use JOINs or batch loading. For large tables, consider partitioning by date. Always use parameterized queries to prevent SQL injection. ## Redis Caching Patterns Use Redis for session storage, rate limiting, and cache-aside patterns. Set TTLs on cached data to prevent stale reads. Consider Redis Cluster for high availability. Monitor memory usage—Redis holds everything in RAM. ## HubSpot CRM Integration HubSpot offers a REST API and webhooks for real-time sync. Authentication uses private apps (access token) or OAuth for public apps. The CRM API covers contacts, companies, deals, and tickets. Use the Search API for complex queries. Webhook subscriptions require a valid endpoint that responds to verification challenges. ## Xero Accounting Integration Xero uses OAuth 2.0. The API base is https://api.xero.com/api.xro/2.0/. Endpoints include Invoices, Contacts, Payments, and BankTransactions. Connections are tenant-specific—multi-tenant apps must handle organization switching. Rate limits: 60 calls per minute per organization. ## PostgreSQL Best Practices Use connection pooling (PgBouncer) for web applications. Index foreign keys and frequently queried columns. Avoid N+1 queries—use JOINs or batch loading. For large tables, consider partitioning by date. Always use parameterized queries to prevent SQL injection. ## Redis Caching Patterns Use Redis for session storage, rate limiting, and cache-aside patterns. Set TTLs on cached data to prevent stale reads. Consider Redis Cluster for high availability. Monitor memory usage—Redis holds everything in RAM. ## HubSpot CRM Integration HubSpot offers a REST API and webhooks for real-time sync. Authentication uses private apps (access token) or OAuth for public apps. The CRM API covers contacts, companies, deals, and tickets. Use the Search API for complex queries. Webhook subscriptions require a valid endpoint that responds to verification challenges. ## Xero Accounting Integration Xero uses OAuth 2.0. The API base is https://api.xero.com/api.xro/2.0/. Endpoints include Invoices, Contacts, Payments, and BankTransactions. Connections are tenant-specific—multi-tenant apps must handle organization switching. Rate limits: 60 calls per minute per organization. ## PostgreSQL Best Practices Use connection pooling (PgBouncer) for web applications. Index foreign keys and frequently queried columns. Avoid N+1 queries—use JOINs or batch loading. For large tables, consider partitioning by date. Always use parameterized queries to prevent SQL injection. ## Redis Caching Patterns Use Redis for session storage, rate limiting, and cache-aside patterns. Set TTLs on cached data to prevent stale reads. Consider Redis Cluster for high availability. Monitor memory usage—Redis holds everything in RAM. ## HubSpot CRM Integration HubSpot offers a REST API and webhooks for real-time sync. Authentication uses private apps (access token) or OAuth for public apps. The CRM API covers contacts, companies, deals, and tickets. Use the Search API for complex queries. Webhook subscriptions require a valid endpoint that responds to verification challenges. ## Xero Accounting Integration Xero uses OAuth 2.0. The API base is https://api.xero.com/api.xro/2.0/. Endpoints include Invoices, Contacts, Payments, and BankTransactions. Connections are tenant-specific—multi-tenant apps must handle organization switching. Rate limits: 60 calls per minute per organization. ## PostgreSQL Best Practices Use connection pooling (PgBouncer) for web applications. Index foreign keys and frequently queried columns. Avoid N+1 queries—use JOINs or batch loading. For large tables, consider partitioning by date. Always use parameterized queries to prevent SQL injection. ## Redis Caching Patterns Use Redis for session storage, rate limiting, and cache-aside patterns. Set TTLs on cached data to prevent stale reads. Consider Redis Cluster for high availability. Monitor memory usage—Redis holds everything in RAM. ## HubSpot CRM Integration HubSpot offers a REST API and webhooks for real-time sync. Authentication uses private apps (access token) or OAuth for public apps. The CRM API covers contacts, companies, deals, and tickets. Use the Search API for complex queries. Webhook subscriptions require a valid endpoint that responds to verification challenges. ## Xero Accounting Integration Xero uses OAuth 2.0. The API base is https://api.xero.com/api.xro/2.0/. Endpoints include Invoices, Contacts, Payments, and BankTransactions. Connections are tenant-specific—multi-tenant apps must handle organization switching. Rate limits: 60 calls per minute per organization. ## PostgreSQL Best Practices Use connection pooling (PgBouncer) for web applications. Index foreign keys and frequently queried columns. Avoid N+1 queries—use JOINs or batch loading. For large tables, consider partitioning by date. Always use parameterized queries to prevent SQL injection. ## Redis Caching Patterns Use Redis for session storage, rate limiting, and cache-aside patterns. Set TTLs on cached data to prevent stale reads. Consider Redis Cluster for high availability. Monitor memory usage—Redis holds everything in RAM. ## HubSpot CRM Integration HubSpot offers a REST API and webhooks for real-time sync. Authentication uses private apps (access token) or OAuth for public apps. The CRM API covers contacts, companies, deals, and tickets. Use the Search API for complex queries. Webhook subscriptions require a valid endpoint that responds to verification challenges. ## Xero Accounting Integration Xero uses OAuth 2.0. The API base is https://api.xero.com/api.xro/2.0/. Endpoints include Invoices, Contacts, Payments, and BankTransactions. Connections are tenant-specific—multi-tenant apps must handle organization switching. Rate limits: 60 calls per minute per organization. ## PostgreSQL Best Practices Use connection pooling (PgBouncer) for web applications. Index foreign keys and frequently queried columns. Avoid N+1 queries—use JOINs or batch loading. For large tables, consider partitioning by date. Always use parameterized queries to prevent SQL injection. ## Redis Caching Patterns Use Redis for session storage, rate limiting, and cache-aside patterns. Set TTLs on cached data to prevent stale reads. Consider Redis Cluster for high availability. Monitor memory usage—Redis holds everything in RAM. ## HubSpot CRM Integration HubSpot offers a REST API and webhooks for real-time sync. Authentication uses private apps (access token) or OAuth for public apps. The CRM API covers contacts, companies, deals, and tickets. Use the Search API for complex queries. Webhook subscriptions require a valid endpoint that responds to verification challenges. ## Xero Accounting Integration Xero uses OAuth 2.0. The API base is https://api.xero.com/api.xro/2.0/. Endpoints include Invoices, Contacts, Payments, and BankTransactions. Connections are tenant-specific—multi-tenant apps must handle organization switching. Rate limits: 60 calls per minute per organization. ## PostgreSQL Best Practices Use connection pooling (PgBouncer) for web applications. Index foreign keys and frequently queried columns. Avoid N+1 queries—use JOINs or batch loading. For large tables, consider partitioning by date. Always use parameterized queries to prevent SQL injection. ## Redis Caching Patterns Use Redis for session storage, rate limiting, and cache-aside patterns. Set TTLs on cached data to prevent stale reads. Consider Redis Cluster for high availability. Monitor memory usage—Redis holds everything in RAM. ## HubSpot CRM Integration HubSpot offers a REST API and webhooks for real-time sync. Authentication uses private apps (access token) or OAuth for public apps. The CRM API covers contacts, companies, deals, and tickets. Use the Search API for complex queries. Webhook subscriptions require a valid endpoint that responds to verification challenges. ## Xero Accounting Integration Xero uses OAuth 2.0. The API base is https://api.xero.com/api.xro/2.0/. Endpoints include Invoices, Contacts, Payments, and BankTransactions. Connections are tenant-specific—multi-tenant apps must handle organization switching. Rate limits: 60 calls per minute per organization. ## PostgreSQL Best Practices Use connection pooling (PgBouncer) for web applications. Index foreign keys and frequently queried columns. Avoid N+1 queries—use JOINs or batch loading. For large tables, consider partitioning by date. Always use parameterized queries to prevent SQL injection. ## Redis Caching Patterns Use Redis for session storage, rate limiting, and cache-aside patterns. Set TTLs on cached data to prevent stale reads. Consider Redis Cluster for high availability. Monitor memory usage—Redis holds everything in RAM. ## HubSpot CRM Integration HubSpot offers a REST API and webhooks for real-time sync. Authentication uses private apps (access token) or OAuth for public apps. The CRM API covers contacts, companies, deals, and tickets. Use the Search API for complex queries. Webhook subscriptions require a valid endpoint that responds to verification challenges. ## Xero Accounting Integration Xero uses OAuth 2.0. The API base is https://api.xero.com/api.xro/2.0/. Endpoints include Invoices, Contacts, Payments, and BankTransactions. Connections are tenant-specific—multi-tenant apps must handle organization switching. Rate limits: 60 calls per minute per organization. ## PostgreSQL Best Practices Use connection pooling (PgBouncer) for web applications. Index foreign keys and frequently queried columns. Avoid N+1 queries—use JOINs or batch loading. For large tables, consider partitioning by date. Always use parameterized queries to prevent SQL injection. ## Redis Caching Patterns Use Redis for session storage, rate limiting, and cache-aside patterns. Set TTLs on cached data to prevent stale reads. Consider Redis Cluster for high availability. Monitor memory usage—Redis holds everything in RAM. ## HubSpot CRM Integration HubSpot offers a REST API and webhooks for real-time sync. Authentication uses private apps (access token) or OAuth for public apps. The CRM API covers contacts, companies, deals, and tickets. Use the Search API for complex queries. Webhook subscriptions require a valid endpoint that responds to verification challenges. ## Xero Accounting Integration Xero uses OAuth 2.0. The API base is https://api.xero.com/api.xro/2.0/. Endpoints include Invoices, Contacts, Payments, and BankTransactions. Connections are tenant-specific—multi-tenant apps must handle organization switching. Rate limits: 60 calls per minute per organization. ## PostgreSQL Best Practices Use connection pooling (PgBouncer) for web applications. Index foreign keys and frequently queried columns. Avoid N+1 queries—use JOINs or batch loading. For large tables, consider partitioning by date. Always use parameterized queries to prevent SQL injection. ## Redis Caching Patterns Use Redis for session storage, rate limiting, and cache-aside patterns. Set TTLs on cached data to prevent stale reads. Consider Redis Cluster for high availability. Monitor memory usage—Redis holds everything in RAM. ## HubSpot CRM Integration HubSpot offers a REST API and webhooks for real-time sync. Authentication uses private apps (access token) or OAuth for public apps. The CRM API covers contacts, companies, deals, and tickets. Use the Search API for complex queries. Webhook subscriptions require a valid endpoint that responds to verification challenges. ## Xero Accounting Integration Xero uses OAuth 2.0. The API base is https://api.xero.com/api.xro/2.0/. Endpoints include Invoices, Contacts, Payments, and BankTransactions. Connections are tenant-specific—multi-tenant apps must handle organization switching. Rate limits: 60 calls per minute per organization. ## PostgreSQL Best Practices Use connection pooling (PgBouncer) for web applications. Index foreign keys and frequently queried columns. Avoid N+1 queries—use JOINs or batch loading. For large tables, consider partitioning by date. Always use parameterized queries to prevent SQL injection. ## Redis Caching Patterns Use Redis for session storage, rate limiting, and cache-aside patterns. Set TTLs on cached data to prevent stale reads. Consider Redis Cluster for high availability. Monitor memory usage—Redis holds everything in RAM. ## HubSpot CRM Integration HubSpot offers a REST API and webhooks for real-time sync. Authentication uses private apps (access token) or OAuth for public apps. The CRM API covers contacts, companies, deals, and tickets. Use the Search API for complex queries. Webhook subscriptions require a valid endpoint that responds to verification challenges. ## Xero Accounting Integration Xero uses OAuth 2.0. The API base is https://api.xero.com/api.xro/2.0/. Endpoints include Invoices, Contacts, Payments, and BankTransactions. Connections are tenant-specific—multi-tenant apps must handle organization switching. Rate limits: 60 calls per minute per organization. ## PostgreSQL Best Practices Use connection pooling (PgBouncer) for web applications. Index foreign keys and frequently queried columns. Avoid N+1 queries—use JOINs or batch loading. For large tables, consider partitioning by date. Always use parameterized queries to prevent SQL injection. ## Redis Caching Patterns Use Redis for session storage, rate limiting, and cache-aside patterns. Set TTLs on cached data to prevent stale reads. Consider Redis Cluster for high availability. Monitor memory usage—Redis holds everything in RAM. ## HubSpot CRM Integration HubSpot offers a REST API and webhooks for real-time sync. Authentication uses private apps (access token) or OAuth for public apps. The CRM API covers contacts, companies, deals, and tickets. Use the Search API for complex queries. Webhook subscriptions require a valid endpoint that responds to verification challenges. ## Xero Accounting Integration Xero uses OAuth 2.0. The API base is https://api.xero.com/api.xro/2.0/. Endpoints include Invoices, Contacts, Payments, and BankTransactions. Connections are tenant-specific—multi-tenant apps must handle organization switching. Rate limits: 60 calls per minute per organization. ## PostgreSQL Best Practices Use connection pooling (PgBouncer) for web applications. Index foreign keys and frequently queried columns. Avoid N+1 queries—use JOINs or batch loading. For large tables, consider partitioning by date. Always use parameterized queries to prevent SQL injection. ## Redis Caching Patterns Use Redis for session storage, rate limiting, and cache-aside patterns. Set TTLs on cached data to prevent stale reads. Consider Redis Cluster for high availability. Monitor memory usage—Redis holds everything in RAM. ## HubSpot CRM Integration HubSpot offers a REST API and webhooks for real-time sync. Authentication uses private apps (access token) or OAuth for public apps. The CRM API covers contacts, companies, deals, and tickets. Use the Search API for complex queries. Webhook subscriptions require a valid endpoint that responds to verification challenges. ## Xero Accounting Integration Xero uses OAuth 2.0. The API base is https://api.xero.com/api.xro/2.0/. Endpoints include Invoices, Contacts, Payments, and BankTransactions. Connections are tenant-specific—multi-tenant apps must handle organization switching. Rate limits: 60 calls per minute per organization. ## PostgreSQL Best Practices Use connection pooling (PgBouncer) for web applications. Index foreign keys and frequently queried columns. Avoid N+1 queries—use JOINs or batch loading. For large tables, consider partitioning by date. Always use parameterized queries to prevent SQL injection. ## Redis Caching Patterns Use Redis for session storage, rate limiting, and cache-aside patterns. Set TTLs on cached data to prevent stale reads. Consider Redis Cluster for high availability. Monitor memory usage—Redis holds everything in RAM. ## HubSpot CRM Integration HubSpot offers a REST API and webhooks for real-time sync. Authentication uses private apps (access token) or OAuth for public apps. The CRM API covers contacts, companies, deals, and tickets. Use the Search API for complex queries. Webhook subscriptions require a valid endpoint that responds to verification challenges. ## Xero Accounting Integration Xero uses OAuth 2.0. The API base is https://api.xero.com/api.xro/2.0/. Endpoints include Invoices, Contacts, Payments, and BankTransactions. Connections are tenant-specific—multi-tenant apps must handle organization switching. Rate limits: 60 calls per minute per organization. ## PostgreSQL Best Practices Use connection pooling (PgBouncer) for web applications. Index foreign keys and frequently queried columns. Avoid N+1 queries—use JOINs or batch loading. For large tables, consider partitioning by date. Always use parameterized queries to prevent SQL injection. ## Redis Caching Patterns Use Redis for session storage, rate limiting, and cache-aside patterns. Set TTLs on cached data to prevent stale reads. Consider Redis Cluster for high availability. Monitor memory usage—Redis holds everything in RAM. ## HubSpot CRM Integration HubSpot offers a REST API and webhooks for real-time sync. Authentication uses private apps (access token) or OAuth for public apps. The CRM API covers contacts, companies, deals, and tickets. Use the Search API for complex queries. Webhook subscriptions require a valid endpoint that responds to verification challenges. ## Xero Accounting Integration Xero uses OAuth 2.0. The API base is https://api.xero.com/api.xro/2.0/. Endpoints include Invoices, Contacts, Payments, and BankTransactions. Connections are tenant-specific—multi-tenant apps must handle organization switching. Rate limits: 60 calls per minute per organization. ## PostgreSQL Best Practices Use connection pooling (PgBouncer) for web applications. Index foreign keys and frequently queried columns. Avoid N+1 queries—use JOINs or batch loading. For large tables, consider partitioning by date. Always use parameterized queries to prevent SQL injection. ## Redis Caching Patterns Use Redis for session storage, rate limiting, and cache-aside patterns. Set TTLs on cached data to prevent stale reads. Consider Redis Cluster for high availability. Monitor memory usage—Redis holds everything in RAM. ## HubSpot CRM Integration HubSpot offers a REST API and webhooks for real-time sync. Authentication uses private apps (access token) or OAuth for public apps. The CRM API covers contacts, companies, deals, and tickets. Use the Search API for complex queries. Webhook subscriptions require a valid endpoint that responds to verification challenges. ## Xero Accounting Integration Xero uses OAuth 2.0. The API base is https://api.xero.com/api.xro/2.0/. Endpoints include Invoices, Contacts, Payments, and BankTransactions. Connections are tenant-specific—multi-tenant apps must handle organization switching. Rate limits: 60 calls per minute per organization. ## PostgreSQL Best Practices Use connection pooling (PgBouncer) for web applications. Index foreign keys and frequently queried columns. Avoid N+1 queries—use JOINs or batch loading. For large tables, consider partitioning by date. Always use parameterized queries to prevent SQL injection. ## Redis Caching Patterns Use Redis for session storage, rate limiting, and cache-aside patterns. Set TTLs on cached data to prevent stale reads. Consider Redis Cluster for high availability. Monitor memory usage—Redis holds everything in RAM. ## HubSpot CRM Integration HubSpot offers a REST API and webhooks for real-time sync. Authentication uses private apps (access token) or OAuth for public apps. The CRM API covers contacts, companies, deals, and tickets. Use the Search API for complex queries. Webhook subscriptions require a valid endpoint that responds to verification challenges. ## Xero Accounting Integration Xero uses OAuth 2.0. The API base is https://api.xero.com/api.xro/2.0/. Endpoints include Invoices, Contacts, Payments, and BankTransactions. Connections are tenant-specific—multi-tenant apps must handle organization switching. Rate limits: 60 calls per minute per organization. ## PostgreSQL Best Practices Use connection pooling (PgBouncer) for web applications. Index foreign keys and frequently queried columns. Avoid N+1 queries—use JOINs or batch loading. For large tables, consider partitioning by date. Always use parameterized queries to prevent SQL injection. ## Redis Caching Patterns Use Redis for session storage, rate limiting, and cache-aside patterns. Set TTLs on cached data to prevent stale reads. Consider Redis Cluster for high availability. Monitor memory usage—Redis holds everything in RAM. ## HubSpot CRM Integration HubSpot offers a REST API and webhooks for real-time sync. Authentication uses private apps (access token) or OAuth for public apps. The CRM API covers contacts, companies, deals, and tickets. Use the Search API for complex queries. Webhook subscriptions require a valid endpoint that responds to verification challenges. ## Xero Accounting Integration Xero uses OAuth 2.0. The API base is https://api.xero.com/api.xro/2.0/. Endpoints include Invoices, Contacts, Payments, and BankTransactions. Connections are tenant-specific—multi-tenant apps must handle organization switching. Rate limits: 60 calls per minute per organization. ## PostgreSQL Best Practices Use connection pooling (PgBouncer) for web applications. Index foreign keys and frequently queried columns. Avoid N+1 queries—use JOINs or batch loading. For large tables, consider partitioning by date. Always use parameterized queries to prevent SQL injection. ## Redis Caching Patterns Use Redis for session storage, rate limiting, and cache-aside patterns. Set TTLs on cached data to prevent stale reads. Consider Redis Cluster for high availability. Monitor memory usage—Redis holds everything in RAM. ## HubSpot CRM Integration HubSpot offers a REST API and webhooks for real-time sync. Authentication uses private apps (access token) or OAuth for public apps. The CRM API covers contacts, companies, deals, and tickets. Use the Search API for complex queries. Webhook subscriptions require a valid endpoint that responds to verification challenges. ## Xero Accounting Integration Xero uses OAuth 2.0. The API base is https://api.xero.com/api.xro/2.0/. Endpoints include Invoices, Contacts, Payments, and BankTransactions. Connections are tenant-specific—multi-tenant apps must handle organization switching. Rate limits: 60 calls per minute per organization. ## PostgreSQL Best Practices Use connection pooling (PgBouncer) for web applications. Index foreign keys and frequently queried columns. Avoid N+1 queries—use JOINs or batch loading. For large tables, consider partitioning by date. Always use parameterized queries to prevent SQL injection. ## Redis Caching Patterns Use Redis for session storage, rate limiting, and cache-aside patterns. Set TTLs on cached data to prevent stale reads. Consider Redis Cluster for high availability. Monitor memory usage—Redis holds everything in RAM. ## HubSpot CRM Integration HubSpot offers a REST API and webhooks for real-time sync. Authentication uses private apps (access token) or OAuth for public apps. The CRM API covers contacts, companies, deals, and tickets. Use the Search API for complex queries. Webhook subscriptions require a valid endpoint that responds to verification challenges. ## Xero Accounting Integration Xero uses OAuth 2.0. The API base is https://api.xero.com/api.xro/2.0/. Endpoints include Invoices, Contacts, Payments, and BankTransactions. Connections are tenant-specific—multi-tenant apps must handle organization switching. Rate limits: 60 calls per minute per organization. ## PostgreSQL Best Practices Use connection pooling (PgBouncer) for web applications. Index foreign keys and frequently queried columns. Avoid N+1 queries—use JOINs or batch loading. For large tables, consider partitioning by date. Always use parameterized queries to prevent SQL injection. ## Redis Caching Patterns Use Redis for session storage, rate limiting, and cache-aside patterns. Set TTLs on cached data to prevent stale reads. Consider Redis Cluster for high availability. Monitor memory usage—Redis holds everything in RAM. ## HubSpot CRM Integration HubSpot offers a REST API and webhooks for real-time sync. Authentication uses private apps (access token) or OAuth for public apps. The CRM API covers contacts, companies, deals, and tickets. Use the Search API for complex queries. Webhook subscriptions require a valid endpoint that responds to verification challenges. ## Xero Accounting Integration Xero uses OAuth 2.0. The API base is https://api.xero.com/api.xro/2.0/. Endpoints include Invoices, Contacts, Payments, and BankTransactions. Connections are tenant-specific—multi-tenant apps must handle organization switching. Rate limits: 60 calls per minute per organization. ## PostgreSQL Best Practices Use connection pooling (PgBouncer) for web applications. Index foreign keys and frequently queried columns. Avoid N+1 queries—use JOINs or batch loading. For large tables, consider partitioning by date. Always use parameterized queries to prevent SQL injection. ## Redis Caching Patterns Use Redis for session storage, rate limiting, and cache-aside patterns. Set TTLs on cached data to prevent stale reads. Consider Redis Cluster for high availability. Monitor memory usage—Redis holds everything in RAM. ## HubSpot CRM Integration HubSpot offers a REST API and webhooks for real-time sync. Authentication uses private apps (access token) or OAuth for public apps. The CRM API covers contacts, companies, deals, and tickets. Use the Search API for complex queries. Webhook subscriptions require a valid endpoint that responds to verification challenges. ## Xero Accounting Integration Xero uses OAuth 2.0. The API base is https://api.xero.com/api.xro/2.0/. Endpoints include Invoices, Contacts, Payments, and BankTransactions. Connections are tenant-specific—multi-tenant apps must handle organization switching. Rate limits: 60 calls per minute per organization. ## PostgreSQL Best Practices Use connection pooling (PgBouncer) for web applications. Index foreign keys and frequently queried columns. Avoid N+1 queries—use JOINs or batch loading. For large tables, consider partitioning by date. Always use parameterized queries to prevent SQL injection. ## Redis Caching Patterns Use Redis for session storage, rate limiting, and cache-aside patterns. Set TTLs on cached data to prevent stale reads. Consider Redis Cluster for high availability. Monitor memory usage—Redis holds everything in RAM. ## HubSpot CRM Integration HubSpot offers a REST API and webhooks for real-time sync. Authentication uses private apps (access token) or OAuth for public apps. The CRM API covers contacts, companies, deals, and tickets. Use the Search API for complex queries. Webhook subscriptions require a valid endpoint that responds to verification challenges. ## Xero Accounting Integration Xero uses OAuth 2.0. The API base is https://api.xero.com/api.xro/2.0/. Endpoints include Invoices, Contacts, Payments, and BankTransactions. Connections are tenant-specific—multi-tenant apps must handle organization switching. Rate limits: 60 calls per minute per organization. ## PostgreSQL Best Practices Use connection pooling (PgBouncer) for web applications. Index foreign keys and frequently queried columns. Avoid N+1 queries—use JOINs or batch loading. For large tables, consider partitioning by date. Always use parameterized queries to prevent SQL injection. ## Redis Caching Patterns Use Redis for session storage, rate limiting, and cache-aside patterns. Set TTLs on cached data to prevent stale reads. Consider Redis Cluster for high availability. Monitor memory usage—Redis holds everything in RAM. ## HubSpot CRM Integration HubSpot offers a REST API and webhooks for real-time sync. Authentication uses private apps (access token) or OAuth for public apps. The CRM API covers contacts, companies, deals, and tickets. Use the Search API for complex queries. Webhook subscriptions require a valid endpoint that responds to verification challenges. ## Xero Accounting Integration Xero uses OAuth 2.0. The API base is https://api.xero.com/api.xro/2.0/. Endpoints include Invoices, Contacts, Payments, and BankTransactions. Connections are tenant-specific—multi-tenant apps must handle organization switching. Rate limits: 60 calls per minute per organization. ## PostgreSQL Best Practices Use connection pooling (PgBouncer) for web applications. Index foreign keys and frequently queried columns. Avoid N+1 queries—use JOINs or batch loading. For large tables, consider partitioning by date. Always use parameterized queries to prevent SQL injection. ## Redis Caching Patterns Use Redis for session storage, rate limiting, and cache-aside patterns. Set TTLs on cached data to prevent stale reads. Consider Redis Cluster for high availability. Monitor memory usage—Redis holds everything in RAM. ## HubSpot CRM Integration HubSpot offers a REST API and webhooks for real-time sync. Authentication uses private apps (access token) or OAuth for public apps. The CRM API covers contacts, companies, deals, and tickets. Use the Search API for complex queries. Webhook subscriptions require a valid endpoint that responds to verification challenges. ## Xero Accounting Integration Xero uses OAuth 2.0. The API base is https://api.xero.com/api.xro/2.0/. Endpoints include Invoices, Contacts, Payments, and BankTransactions. Connections are tenant-specific—multi-tenant apps must handle organization switching. Rate limits: 60 calls per minute per organization. ## PostgreSQL Best Practices Use connection pooling (PgBouncer) for web applications. Index foreign keys and frequently queried columns. Avoid N+1 queries—use JOINs or batch loading. For large tables, consider partitioning by date. Always use parameterized queries to prevent SQL injection. ## Redis Caching Patterns Use Redis for session storage, rate limiting, and cache-aside patterns. Set TTLs on cached data to prevent stale reads. Consider Redis Cluster for high availability. Monitor memory usage—Redis holds everything in RAM. ## HubSpot CRM Integration HubSpot offers a REST API and webhooks for real-time sync. Authentication uses private apps (access token) or OAuth for public apps. The CRM API covers contacts, companies, deals, and tickets. Use the Search API for complex queries. Webhook subscriptions require a valid endpoint that responds to verification challenges. ## Xero Accounting Integration Xero uses OAuth 2.0. The API base is https://api.xero.com/api.xro/2.0/. Endpoints include Invoices, Contacts, Payments, and BankTransactions. Connections are tenant-specific—multi-tenant apps must handle organization switching. Rate limits: 60 calls per minute per organization. ## PostgreSQL Best Practices Use connection pooling (PgBouncer) for web applications. Index foreign keys and frequently queried columns. Avoid N+1 queries—use JOINs or batch loading. For large tables, consider partitioning by date. Always use parameterized queries to prevent SQL injection. ## Redis Caching Patterns Use Redis for session storage, rate limiting, and cache-aside patterns. Set TTLs on cached data to prevent stale reads. Consider Redis Cluster for high availability. Monitor memory usage—Redis holds everything in RAM. ## HubSpot CRM Integration HubSpot offers a REST API and webhooks for real-time sync. Authentication uses private apps (access token) or OAuth for public apps. The CRM API covers contacts, companies, deals, and tickets. Use the Search API for complex queries. Webhook subscriptions require a valid endpoint that responds to verification challenges. ## Xero Accounting Integration Xero uses OAuth 2.0. The API base is https://api.xero.com/api.xro/2.0/. Endpoints include Invoices, Contacts, Payments, and BankTransactions. Connections are tenant-specific—multi-tenant apps must handle organization switching. Rate limits: 60 calls per minute per organization. ## PostgreSQL Best Practices Use connection pooling (PgBouncer) for web applications. Index foreign keys and frequently queried columns. Avoid N+1 queries—use JOINs or batch loading. For large tables, consider partitioning by date. Always use parameterized queries to prevent SQL injection. ## Redis Caching Patterns Use Redis for session storage, rate limiting, and cache-aside patterns. Set TTLs on cached data to prevent stale reads. Consider Redis Cluster for high availability. Monitor memory usage—Redis holds everything in RAM. ## HubSpot CRM Integration HubSpot offers a REST API and webhooks for real-time sync. Authentication uses private apps (access token) or OAuth for public apps. The CRM API covers contacts, companies, deals, and tickets. Use the Search API for complex queries. Webhook subscriptions require a valid endpoint that responds to verification challenges. ## Xero Accounting Integration Xero uses OAuth 2.0. The API base is https://api.xero.com/api.xro/2.0/. Endpoints include Invoices, Contacts, Payments, and BankTransactions. Connections are tenant-specific—multi-tenant apps must handle organization switching. Rate limits: 60 calls per minute per organization. ## PostgreSQL Best Practices Use connection pooling (PgBouncer) for web applications. Index foreign keys and frequently queried columns. Avoid N+1 queries—use JOINs or batch loading. For large tables, consider partitioning by date. Always use parameterized queries to prevent SQL injection. ## Redis Caching Patterns Use Redis for session storage, rate limiting, and cache-aside patterns. Set TTLs on cached data to prevent stale reads. Consider Redis Cluster for high availability. Monitor memory usage—Redis holds everything in RAM. ## HubSpot CRM Integration HubSpot offers a REST API and webhooks for real-time sync. Authentication uses private apps (access token) or OAuth for public apps. The CRM API covers contacts, companies, deals, and tickets. Use the Search API for complex queries. Webhook subscriptions require a valid endpoint that responds to verification challenges. ## Xero Accounting Integration Xero uses OAuth 2.0. The API base is https://api.xero.com/api.xro/2.0/. Endpoints include Invoices, Contacts, Payments, and BankTransactions. Connections are tenant-specific—multi-tenant apps must handle organization switching. Rate limits: 60 calls per minute per organization. ## PostgreSQL Best Practices Use connection pooling (PgBouncer) for web applications. Index foreign keys and frequently queried columns. Avoid N+1 queries—use JOINs or batch loading. For large tables, consider partitioning by date. Always use parameterized queries to prevent SQL injection. ## Redis Caching Patterns Use Redis for session storage, rate limiting, and cache-aside patterns. Set TTLs on cached data to prevent stale reads. Consider Redis Cluster for high availability. Monitor memory usage—Redis holds everything in RAM. ## HubSpot CRM Integration HubSpot offers a REST API and webhooks for real-time sync. Authentication uses private apps (access token) or OAuth for public apps. The CRM API covers contacts, companies, deals, and tickets. Use the Search API for complex queries. Webhook subscriptions require a valid endpoint that responds to verification challenges. ## Xero Accounting Integration Xero uses OAuth 2.0. The API base is https://api.xero.com/api.xro/2.0/. Endpoints include Invoices, Contacts, Payments, and BankTransactions. Connections are tenant-specific—multi-tenant apps must handle organization switching. Rate limits: 60 calls per minute per organization. ## PostgreSQL Best Practices Use connection pooling (PgBouncer) for web applications. Index foreign keys and frequently queried columns. Avoid N+1 queries—use JOINs or batch loading. For large tables, consider partitioning by date. Always use parameterized queries to prevent SQL injection. ## Redis Caching Patterns Use Redis for session storage, rate limiting, and cache-aside patterns. Set TTLs on cached data to prevent stale reads. Consider Redis Cluster for high availability. Monitor memory usage—Redis holds everything in RAM. ## HubSpot CRM Integration HubSpot offers a REST API and webhooks for real-time sync. Authentication uses private apps (access token) or OAuth for public apps. The CRM API covers contacts, companies, deals, and tickets. Use the Search API for complex queries. Webhook subscriptions require a valid endpoint that responds to verification challenges. ## Xero Accounting Integration Xero uses OAuth 2.0. The API base is https://api.xero.com/api.xro/2.0/. Endpoints include Invoices, Contacts, Payments, and BankTransactions. Connections are tenant-specific—multi-tenant apps must handle organization switching. Rate limits: 60 calls per minute per organization. ## PostgreSQL Best Practices Use connection pooling (PgBouncer) for web applications. Index foreign keys and frequently queried columns. Avoid N+1 queries—use JOINs or batch loading. For large tables, consider partitioning by date. Always use parameterized queries to prevent SQL injection. ## Redis Caching Patterns Use Redis for session storage, rate limiting, and cache-aside patterns. Set TTLs on cached data to prevent stale reads. Consider Redis Cluster for high availability. Monitor memory usage—Redis holds everything in RAM. ## HubSpot CRM Integration HubSpot offers a REST API and webhooks for real-time sync. Authentication uses private apps (access token) or OAuth for public apps. The CRM API covers contacts, companies, deals, and tickets. Use the Search API for complex queries. Webhook subscriptions require a valid endpoint that responds to verification challenges. ## Xero Accounting Integration Xero uses OAuth 2.0. The API base is https://api.xero.com/api.xro/2.0/. Endpoints include Invoices, Contacts, Payments, and BankTransactions. Connections are tenant-specific—multi-tenant apps must handle organization switching. Rate limits: 60 calls per minute per organization. ## PostgreSQL Best Practices Use connection pooling (PgBouncer) for web applications. Index foreign keys and frequently queried columns. Avoid N+1 queries—use JOINs or batch loading. For large tables, consider partitioning by date. Always use parameterized queries to prevent SQL injection. ## Redis Caching Patterns Use Redis for session storage, rate limiting, and cache-aside patterns. Set TTLs on cached data to prevent stale reads. Consider Redis Cluster for high availability. Monitor memory usage—Redis holds everything in RAM. ## HubSpot CRM Integration HubSpot offers a REST API and webhooks for real-time sync. Authentication uses private apps (access token) or OAuth for public apps. The CRM API covers contacts, companies, deals, and tickets. Use the Search API for complex queries. Webhook subscriptions require a valid endpoint that responds to verification challenges. ## Xero Accounting Integration Xero uses OAuth 2.0. The API base is https://api.xero.com/api.xro/2.0/. Endpoints include Invoices, Contacts, Payments, and BankTransactions. Connections are tenant-specific—multi-tenant apps must handle organization switching. Rate limits: 60 calls per minute per organization. ## PostgreSQL Best Practices Use connection pooling (PgBouncer) for web applications. Index foreign keys and frequently queried columns. Avoid N+1 queries—use JOINs or batch loading. For large tables, consider partitioning by date. Always use parameterized queries to prevent SQL injection. ## Redis Caching Patterns Use Redis for session storage, rate limiting, and cache-aside patterns. Set TTLs on cached data to prevent stale reads. Consider Redis Cluster for high availability. Monitor memory usage—Redis holds everything in RAM. ## HubSpot CRM Integration HubSpot offers a REST API and webhooks for real-time sync. Authentication uses private apps (access token) or OAuth for public apps. The CRM API covers contacts, companies, deals, and tickets. Use the Search API for complex queries. Webhook subscriptions require a valid endpoint that responds to verification challenges. ## Xero Accounting Integration Xero uses OAuth 2.0. The API base is https://api.xero.com/api.xro/2.0/. Endpoints include Invoices, Contacts, Payments, and BankTransactions. Connections are tenant-specific—multi-tenant apps must handle organization switching. Rate limits: 60 calls per minute per organization. ## PostgreSQL Best Practices Use connection pooling (PgBouncer) for web applications. Index foreign keys and frequently queried columns. Avoid N+1 queries—use JOINs or batch loading. For large tables, consider partitioning by date. Always use parameterized queries to prevent SQL injection. ## Redis Caching Patterns Use Redis for session storage, rate limiting, and cache-aside patterns. Set TTLs on cached data to prevent stale reads. Consider Redis Cluster for high availability. Monitor memory usage—Redis holds everything in RAM. ## HubSpot CRM Integration HubSpot offers a REST API and webhooks for real-time sync. Authentication uses private apps (access token) or OAuth for public apps. The CRM API covers contacts, companies, deals, and tickets. Use the Search API for complex queries. Webhook subscriptions require a valid endpoint that responds to verification challenges. ## Xero Accounting Integration Xero uses OAuth 2.0. The API base is https://api.xero.com/api.xro/2.0/. Endpoints include Invoices, Contacts, Payments, and BankTransactions. Connections are tenant-specific—multi-tenant apps must handle organization switching. Rate limits: 60 calls per minute per organization. ## PostgreSQL Best Practices Use connection pooling (PgBouncer) for web applications. Index foreign keys and frequently queried columns. Avoid N+1 queries—use JOINs or batch loading. For large tables, consider partitioning by date. Always use parameterized queries to prevent SQL injection. ## Redis Caching Patterns Use Redis for session storage, rate limiting, and cache-aside patterns. Set TTLs on cached data to prevent stale reads. Consider Redis Cluster for high availability. Monitor memory usage—Redis holds everything in RAM. ## HubSpot CRM Integration HubSpot offers a REST API and webhooks for real-time sync. Authentication uses private apps (access token) or OAuth for public apps. The CRM API covers contacts, companies, deals, and tickets. Use the Search API for complex queries. Webhook subscriptions require a valid endpoint that responds to verification challenges. ## Xero Accounting Integration Xero uses OAuth 2.0. The API base is https://api.xero.com/api.xro/2.0/. Endpoints include Invoices, Contacts, Payments, and BankTransactions. Connections are tenant-specific—multi-tenant apps must handle organization switching. Rate limits: 60 calls per minute per organization. ## PostgreSQL Best Practices Use connection pooling (PgBouncer) for web applications. Index foreign keys and frequently queried columns. Avoid N+1 queries—use JOINs or batch loading. For large tables, consider partitioning by date. Always use parameterized queries to prevent SQL injection. ## Redis Caching Patterns Use Redis for session storage, rate limiting, and cache-aside patterns. Set TTLs on cached data to prevent stale reads. Consider Redis Cluster for high availability. Monitor memory usage—Redis holds everything in RAM. ## HubSpot CRM Integration HubSpot offers a REST API and webhooks for real-time sync. Authentication uses private apps (access token) or OAuth for public apps. The CRM API covers contacts, companies, deals, and tickets. Use the Search API for complex queries. Webhook subscriptions require a valid endpoint that responds to verification challenges. ## Xero Accounting Integration Xero uses OAuth 2.0. The API base is https://api.xero.com/api.xro/2.0/. Endpoints include Invoices, Contacts, Payments, and BankTransactions. Connections are tenant-specific—multi-tenant apps must handle organization switching. Rate limits: 60 calls per minute per organization. ## PostgreSQL Best Practices Use connection pooling (PgBouncer) for web applications. Index foreign keys and frequently queried columns. Avoid N+1 queries—use JOINs or batch loading. For large tables, consider partitioning by date. Always use parameterized queries to prevent SQL injection. ## Redis Caching Patterns Use Redis for session storage, rate limiting, and cache-aside patterns. Set TTLs on cached data to prevent stale reads. Consider Redis Cluster for high availability. Monitor memory usage—Redis holds everything in RAM. ## HubSpot CRM Integration HubSpot offers a REST API and webhooks for real-time sync. Authentication uses private apps (access token) or OAuth for public apps. The CRM API covers contacts, companies, deals, and tickets. Use the Search API for complex queries. Webhook subscriptions require a valid endpoint that responds to verification challenges. ## Xero Accounting Integration Xero uses OAuth 2.0. The API base is https://api.xero.com/api.xro/2.0/. Endpoints include Invoices, Contacts, Payments, and BankTransactions. Connections are tenant-specific—multi-tenant apps must handle organization switching. Rate limits: 60 calls per minute per organization. ## PostgreSQL Best Practices Use connection pooling (PgBouncer) for web applications. Index foreign keys and frequently queried columns. Avoid N+1 queries—use JOINs or batch loading. For large tables, consider partitioning by date. Always use parameterized queries to prevent SQL injection. ## Redis Caching Patterns Use Redis for session storage, rate limiting, and cache-aside patterns. Set TTLs on cached data to prevent stale reads. Consider Redis Cluster for high availability. Monitor memory usage—Redis holds everything in RAM. ## HubSpot CRM Integration HubSpot offers a REST API and webhooks for real-time sync. Authentication uses private apps (access token) or OAuth for public apps. The CRM API covers contacts, companies, deals, and tickets. Use the Search API for complex queries. Webhook subscriptions require a valid endpoint that responds to verification challenges. ## Xero Accounting Integration Xero uses OAuth 2.0. The API base is https://api.xero.com/api.xro/2.0/. Endpoints include Invoices, Contacts, Payments, and BankTransactions. Connections are tenant-specific—multi-tenant apps must handle organization switching. Rate limits: 60 calls per minute per organization. ## PostgreSQL Best Practices Use connection pooling (PgBouncer) for web applications. Index foreign keys and frequently queried columns. Avoid N+1 queries—use JOINs or batch loading. For large tables, consider partitioning by date. Always use parameterized queries to prevent SQL injection. ## Redis Caching Patterns Use Redis for session storage, rate limiting, and cache-aside patterns. Set TTLs on cached data to prevent stale reads. Consider Redis Cluster for high availability. Monitor memory usage—Redis holds everything in RAM. ## HubSpot CRM Integration HubSpot offers a REST API and webhooks for real-time sync. Authentication uses private apps (access token) or OAuth for public apps. The CRM API covers contacts, companies, deals, and tickets. Use the Search API for complex queries. Webhook subscriptions require a valid endpoint that responds to verification challenges. ## Xero Accounting Integration Xero uses OAuth 2.0. The API base is https://api.xero.com/api.xro/2.0/. Endpoints include Invoices, Contacts, Payments, and BankTransactions. Connections are tenant-specific—multi-tenant apps must handle organization switching. Rate limits: 60 calls per minute per organization. ## PostgreSQL Best Practices Use connection pooling (PgBouncer) for web applications. Index foreign keys and frequently queried columns. Avoid N+1 queries—use JOINs or batch loading. For large tables, consider partitioning by date. Always use parameterized queries to prevent SQL injection. ## Redis Caching Patterns Use Redis for session storage, rate limiting, and cache-aside patterns. Set TTLs on cached data to prevent stale reads. Consider Redis Cluster for high availability. Monitor memory usage—Redis holds everything in RAM. ## HubSpot CRM Integration HubSpot offers a REST API and webhooks for real-time sync. Authentication uses private apps (access token) or OAuth for public apps. The CRM API covers contacts, companies, deals, and tickets. Use the Search API for complex queries. Webhook subscriptions require a valid endpoint that responds to verification challenges. ## Xero Accounting Integration Xero uses OAuth 2.0. The API base is https://api.xero.com/api.xro/2.0/. Endpoints include Invoices, Contacts, Payments, and BankTransactions. Connections are tenant-specific—multi-tenant apps must handle organization switching. Rate limits: 60 calls per minute per organization. ## PostgreSQL Best Practices Use connection pooling (PgBouncer) for web applications. Index foreign keys and frequently queried columns. Avoid N+1 queries—use JOINs or batch loading. For large tables, consider partitioning by date. Always use parameterized queries to prevent SQL injection. ## Redis Caching Patterns Use Redis for session storage, rate limiting, and cache-aside patterns. Set TTLs on cached data to prevent stale reads. Consider Redis Cluster for high availability. Monitor memory usage—Redis holds everything in RAM. ## HubSpot CRM Integration HubSpot offers a REST API and webhooks for real-time sync. Authentication uses private apps (access token) or OAuth for public apps. The CRM API covers contacts, companies, deals, and tickets. Use the Search API for complex queries. Webhook subscriptions require a valid endpoint that responds to verification challenges. ## Xero Accounting Integration Xero uses OAuth 2.0. The API base is https://api.xero.com/api.xro/2.0/. Endpoints include Invoices, Contacts, Payments, and BankTransactions. Connections are tenant-specific—multi-tenant apps must handle organization switching. Rate limits: 60 calls per minute per organization. ## PostgreSQL Best Practices Use connection pooling (PgBouncer) for web applications. Index foreign keys and frequently queried columns. Avoid N+1 queries—use JOINs or batch loading. For large tables, consider partitioning by date. Always use parameterized queries to prevent SQL injection. ## Redis Caching Patterns Use Redis for session storage, rate limiting, and cache-aside patterns. Set TTLs on cached data to prevent stale reads. Consider Redis Cluster for high availability. Monitor memory usage—Redis holds everything in RAM. ## HubSpot CRM Integration HubSpot offers a REST API and webhooks for real-time sync. Authentication uses private apps (access token) or OAuth for public apps. The CRM API covers contacts, companies, deals, and tickets. Use the Search API for complex queries. Webhook subscriptions require a valid endpoint that responds to verification challenges. ## Xero Accounting Integration Xero uses OAuth 2.0. The API base is https://api.xero.com/api.xro/2.0/. Endpoints include Invoices, Contacts, Payments, and BankTransactions. Connections are tenant-specific—multi-tenant apps must handle organization switching. Rate limits: 60 calls per minute per organization. ## PostgreSQL Best Practices Use connection pooling (PgBouncer) for web applications. Index foreign keys and frequently queried columns. Avoid N+1 queries—use JOINs or batch loading. For large tables, consider partitioning by date. Always use parameterized queries to prevent SQL injection. ## Redis Caching Patterns Use Redis for session storage, rate limiting, and cache-aside patterns. Set TTLs on cached data to prevent stale reads. Consider Redis Cluster for high availability. Monitor memory usage—Redis holds everything in RAM. ## HubSpot CRM Integration HubSpot offers a REST API and webhooks for real-time sync. Authentication uses private apps (access token) or OAuth for public apps. The CRM API covers contacts, companies, deals, and tickets. Use the Search API for complex queries. Webhook subscriptions require a valid endpoint that responds to verification challenges. ## Xero Accounting Integration Xero uses OAuth 2.0. The API base is https://api.xero.com/api.xro/2.0/. Endpoints include Invoices, Contacts, Payments, and BankTransactions. Connections are tenant-specific—multi-tenant apps must handle organization switching. Rate limits: 60 calls per minute per organization. ## PostgreSQL Best Practices Use connection pooling (PgBouncer) for web applications. Index foreign keys and frequently queried columns. Avoid N+1 queries—use JOINs or batch loading. For large tables, consider partitioning by date. Always use parameterized queries to prevent SQL injection. ## Redis Caching Patterns Use Redis for session storage, rate limiting, and cache-aside patterns. Set TTLs on cached data to prevent stale reads. Consider Redis Cluster for high availability. Monitor memory usage—Redis holds everything in RAM. ## HubSpot CRM Integration HubSpot offers a REST API and webhooks for real-time sync. Authentication uses private apps (access token) or OAuth for public apps. The CRM API covers contacts, companies, deals, and tickets. Use the Search API for complex queries. Webhook subscriptions require a valid endpoint that responds to verification challenges. ## Xero Accounting Integration Xero uses OAuth 2.0. The API base is https://api.xero.com/api.xro/2.0/. Endpoints include Invoices, Contacts, Payments, and BankTransactions. Connections are tenant-specific—multi-tenant apps must handle organization switching. Rate limits: 60 calls per minute per organization. ## PostgreSQL Best Practices Use connection pooling (PgBouncer) for web applications. Index foreign keys and frequently queried columns. Avoid N+1 queries—use JOINs or batch loading. For large tables, consider partitioning by date. Always use parameterized queries to prevent SQL injection. ## Redis Caching Patterns Use Redis for session storage, rate limiting, and cache-aside patterns. Set TTLs on cached data to prevent stale reads. Consider Redis Cluster for high availability. Monitor memory usage—Redis holds everything in RAM. ## HubSpot CRM Integration HubSpot offers a REST API and webhooks for real-time sync. Authentication uses private apps (access token) or OAuth for public apps. The CRM API covers contacts, companies, deals, and tickets. Use the Search API for complex queries. Webhook subscriptions require a valid endpoint that responds to verification challenges. ## Xero Accounting Integration Xero uses OAuth 2.0. The API base is https://api.xero.com/api.xro/2.0/. Endpoints include Invoices, Contacts, Payments, and BankTransactions. Connections are tenant-specific—multi-tenant apps must handle organization switching. Rate limits: 60 calls per minute per organization. ## PostgreSQL Best Practices Use connection pooling (PgBouncer) for web applications. Index foreign keys and frequently queried columns. Avoid N+1 queries—use JOINs or batch loading. For large tables, consider partitioning by date. Always use parameterized queries to prevent SQL injection. ## Redis Caching Patterns Use Redis for session storage, rate limiting, and cache-aside patterns. Set TTLs on cached data to prevent stale reads. Consider Redis Cluster for high availability. Monitor memory usage—Redis holds everything in RAM. ## HubSpot CRM Integration HubSpot offers a REST API and webhooks for real-time sync. Authentication uses private apps (access token) or OAuth for public apps. The CRM API covers contacts, companies, deals, and tickets. Use the Search API for complex queries. Webhook subscriptions require a valid endpoint that responds to verification challenges. ## Xero Accounting Integration Xero uses OAuth 2.0. The API base is https://api.xero.com/api.xro/2.0/. Endpoints include Invoices, Contacts, Payments, and BankTransactions. Connections are tenant-specific—multi-tenant apps must handle organization switching. Rate limits: 60 calls per minute per organization. ## PostgreSQL Best Practices Use connection pooling (PgBouncer) for web applications. Index foreign keys and frequently queried columns. Avoid N+1 queries—use JOINs or batch loading. For large tables, consider partitioning by date. Always use parameterized queries to prevent SQL injection. ## Redis Caching Patterns Use Redis for session storage, rate limiting, and cache-aside patterns. Set TTLs on cached data to prevent stale reads. Consider Redis Cluster for high availability. Monitor memory usage—Redis holds everything in RAM. ## HubSpot CRM Integration HubSpot offers a REST API and webhooks for real-time sync. Authentication uses private apps (access token) or OAuth for public apps. The CRM API covers contacts, companies, deals, and tickets. Use the Search API for complex queries. Webhook subscriptions require a valid endpoint that responds to verification challenges. ## Xero Accounting Integration Xero uses OAuth 2.0. The API base is https://api.xero.com/api.xro/2.0/. Endpoints include Invoices, Contacts, Payments, and BankTransactions. Connections are tenant-specific—multi-tenant apps must handle organization switching. Rate limits: 60 calls per minute per organization. ## PostgreSQL Best Practices Use connection pooling (PgBouncer) for web applications. Index foreign keys and frequently queried columns. Avoid N+1 queries—use JOINs or batch loading. For large tables, consider partitioning by date. Always use parameterized queries to prevent SQL injection. ## Redis Caching Patterns Use Redis for session storage, rate limiting, and cache-aside patterns. Set TTLs on cached data to prevent stale reads. Consider Redis Cluster for high availability. Monitor memory usage—Redis holds everything in RAM. ## HubSpot CRM Integration HubSpot offers a REST API and webhooks for real-time sync. Authentication uses private apps (access token) or OAuth for public apps. The CRM API covers contacts, companies, deals, and tickets. Use the Search API for complex queries. Webhook subscriptions require a valid endpoint that responds to verification challenges. ## Xero Accounting Integration Xero uses OAuth 2.0. The API base is https://api.xero.com/api.xro/2.0/. Endpoints include Invoices, Contacts, Payments, and BankTransactions. Connections are tenant-specific—multi-tenant apps must handle organization switching. Rate limits: 60 calls per minute per organization. ## PostgreSQL Best Practices Use connection pooling (PgBouncer) for web applications. Index foreign keys and frequently queried columns. Avoid N+1 queries—use JOINs or batch loading. For large tables, consider partitioning by date. Always use parameterized queries to prevent SQL injection. ## Redis Caching Patterns Use Redis for session storage, rate limiting, and cache-aside patterns. Set TTLs on cached data to prevent stale reads. Consider Redis Cluster for high availability. Monitor memory usage—Redis holds everything in RAM. ## HubSpot CRM Integration HubSpot offers a REST API and webhooks for real-time sync. Authentication uses private apps (access token) or OAuth for public apps. The CRM API covers contacts, companies, deals, and tickets. Use the Search API for complex queries. Webhook subscriptions require a valid endpoint that responds to verification challenges. ## Xero Accounting Integration Xero uses OAuth 2.0. The API base is https://api.xero.com/api.xro/2.0/. Endpoints include Invoices, Contacts, Payments, and BankTransactions. Connections are tenant-specific—multi-tenant apps must handle organization switching. Rate limits: 60 calls per minute per organization. ## PostgreSQL Best Practices Use connection pooling (PgBouncer) for web applications. Index foreign keys and frequently queried columns. Avoid N+1 queries—use JOINs or batch loading. For large tables, consider partitioning by date. Always use parameterized queries to prevent SQL injection. ## Redis Caching Patterns Use Redis for session storage, rate limiting, and cache-aside patterns. Set TTLs on cached data to prevent stale reads. Consider Redis Cluster for high availability. Monitor memory usage—Redis holds everything in RAM. ## HubSpot CRM Integration HubSpot offers a REST API and webhooks for real-time sync. Authentication uses private apps (access token) or OAuth for public apps. The CRM API covers contacts, companies, deals, and tickets. Use the Search API for complex queries. Webhook subscriptions require a valid endpoint that responds to verification challenges. ## Xero Accounting Integration Xero uses OAuth 2.0. The API base is https://api.xero.com/api.xro/2.0/. Endpoints include Invoices, Contacts, Payments, and BankTransactions. Connections are tenant-specific—multi-tenant apps must handle organization switching. Rate limits: 60 calls per minute per organization. ## PostgreSQL Best Practices Use connection pooling (PgBouncer) for web applications. Index foreign keys and frequently queried columns. Avoid N+1 queries—use JOINs or batch loading. For large tables, consider partitioning by date. Always use parameterized queries to prevent SQL injection. ## Redis Caching Patterns Use Redis for session storage, rate limiting, and cache-aside patterns. Set TTLs on cached data to prevent stale reads. Consider Redis Cluster for high availability. Monitor memory usage—Redis holds everything in RAM. ## HubSpot CRM Integration HubSpot offers a REST API and webhooks for real-time sync. Authentication uses private apps (access token) or OAuth for public apps. The CRM API covers contacts, companies, deals, and tickets. Use the Search API for complex queries. Webhook subscriptions require a valid endpoint that responds to verification challenges. ## Xero Accounting Integration Xero uses OAuth 2.0. The API base is https://api.xero.com/api.xro/2.0/. Endpoints include Invoices, Contacts, Payments, and BankTransactions. Connections are tenant-specific—multi-tenant apps must handle organization switching. Rate limits: 60 calls per minute per organization. ## PostgreSQL Best Practices Use connection pooling (PgBouncer) for web applications. Index foreign keys and frequently queried columns. Avoid N+1 queries—use JOINs or batch loading. For large tables, consider partitioning by date. Always use parameterized queries to prevent SQL injection. ## Redis Caching Patterns Use Redis for session storage, rate limiting, and cache-aside patterns. Set TTLs on cached data to prevent stale reads. Consider Redis Cluster for high availability. Monitor memory usage—Redis holds everything in RAM. ## HubSpot CRM Integration HubSpot offers a REST API and webhooks for real-time sync. Authentication uses private apps (access token) or OAuth for public apps. The CRM API covers contacts, companies, deals, and tickets. Use the Search API for complex queries. Webhook subscriptions require a valid endpoint that responds to verification challenges. ## Xero Accounting Integration Xero uses OAuth 2.0. The API base is https://api.xero.com/api.xro/2.0/. Endpoints include Invoices, Contacts, Payments, and BankTransactions. Connections are tenant-specific—multi-tenant apps must handle organization switching. Rate limits: 60 calls per minute per organization. ## PostgreSQL Best Practices Use connection pooling (PgBouncer) for web applications. Index foreign keys and frequently queried columns. Avoid N+1 queries—use JOINs or batch loading. For large tables, consider partitioning by date. Always use parameterized queries to prevent SQL injection. ## Redis Caching Patterns Use Redis for session storage, rate limiting, and cache-aside patterns. Set TTLs on cached data to prevent stale reads. Consider Redis Cluster for high availability. Monitor memory usage—Redis holds everything in RAM. ## HubSpot CRM Integration HubSpot offers a REST API and webhooks for real-time sync. Authentication uses private apps (access token) or OAuth for public apps. The CRM API covers contacts, companies, deals, and tickets. Use the Search API for complex queries. Webhook subscriptions require a valid endpoint that responds to verification challenges. ## Xero Accounting Integration Xero uses OAuth 2.0. The API base is https://api.xero.com/api.xro/2.0/. Endpoints include Invoices, Contacts, Payments, and BankTransactions. Connections are tenant-specific—multi-tenant apps must handle organization switching. Rate limits: 60 calls per minute per organization. ## PostgreSQL Best Practices Use connection pooling (PgBouncer) for web applications. Index foreign keys and frequently queried columns. Avoid N+1 queries—use JOINs or batch loading. For large tables, consider partitioning by date. Always use parameterized queries to prevent SQL injection. ## Redis Caching Patterns Use Redis for session storage, rate limiting, and cache-aside patterns. Set TTLs on cached data to prevent stale reads. Consider Redis Cluster for high availability. Monitor memory usage—Redis holds everything in RAM. ## HubSpot CRM Integration HubSpot offers a REST API and webhooks for real-time sync. Authentication uses private apps (access token) or OAuth for public apps. The CRM API covers contacts, companies, deals, and tickets. Use the Search API for complex queries. Webhook subscriptions require a valid endpoint that responds to verification challenges. ## Xero Accounting Integration Xero uses OAuth 2.0. The API base is https://api.xero.com/api.xro/2.0/. Endpoints include Invoices, Contacts, Payments, and BankTransactions. Connections are tenant-specific—multi-tenant apps must handle organization switching. Rate limits: 60 calls per minute per organization. ## PostgreSQL Best Practices Use connection pooling (PgBouncer) for web applications. Index foreign keys and frequently queried columns. Avoid N+1 queries—use JOINs or batch loading. For large tables, consider partitioning by date. Always use parameterized queries to prevent SQL injection. ## Redis Caching Patterns Use Redis for session storage, rate limiting, and cache-aside patterns. Set TTLs on cached data to prevent stale reads. Consider Redis Cluster for high availability. Monitor memory usage—Redis holds everything in RAM. ## HubSpot CRM Integration HubSpot offers a REST API and webhooks for real-time sync. Authentication uses private apps (access token) or OAuth for public apps. The CRM API covers contacts, companies, deals, and tickets. Use the Search API for complex queries. Webhook subscriptions require a valid endpoint that responds to verification challenges. ## Xero Accounting Integration Xero uses OAuth 2.0. The API base is https://api.xero.com/api.xro/2.0/. Endpoints include Invoices, Contacts, Payments, and BankTransactions. Connections are tenant-specific—multi-tenant apps must handle organization switching. Rate limits: 60 calls per minute per organization. ## PostgreSQL Best Practices Use connection pooling (PgBouncer) for web applications. Index foreign keys and frequently queried columns. Avoid N+1 queries—use JOINs or batch loading. For large tables, consider partitioning by date. Always use parameterized queries to prevent SQL injection. ## Redis Caching Patterns Use Redis for session storage, rate limiting, and cache-aside patterns. Set TTLs on cached data to prevent stale reads. Consider Redis Cluster for high availability. Monitor memory usage—Redis holds everything in RAM. ## HubSpot CRM Integration HubSpot offers a REST API and webhooks for real-time sync. Authentication uses private apps (access token) or OAuth for public apps. The CRM API covers contacts, companies, deals, and tickets. Use the Search API for complex queries. Webhook subscriptions require a valid endpoint that responds to verification challenges. ## Xero Accounting Integration Xero uses OAuth 2.0. The API base is https://api.xero.com/api.xro/2.0/. Endpoints include Invoices, Contacts, Payments, and BankTransactions. Connections are tenant-specific—multi-tenant apps must handle organization switching. Rate limits: 60 calls per minute per organization. ## PostgreSQL Best Practices Use connection pooling (PgBouncer) for web applications. Index foreign keys and frequently queried columns. Avoid N+1 queries—use JOINs or batch loading. For large tables, consider partitioning by date. Always use parameterized queries to prevent SQL injection. ## Redis Caching Patterns Use Redis for session storage, rate limiting, and cache-aside patterns. Set TTLs on cached data to prevent stale reads. Consider Redis Cluster for high availability. Monitor memory usage—Redis holds everything in RAM. ## HubSpot CRM Integration HubSpot offers a REST API and webhooks for real-time sync. Authentication uses private apps (access token) or OAuth for public apps. The CRM API covers contacts, companies, deals, and tickets. Use the Search API for complex queries. Webhook subscriptions require a valid endpoint that responds to verification challenges. ## Xero Accounting Integration Xero uses OAuth 2.0. The API base is https://api.xero.com/api.xro/2.0/. Endpoints include Invoices, Contacts, Payments, and BankTransactions. Connections are tenant-specific—multi-tenant apps must handle organization switching. Rate limits: 60 calls per minute per organization. ## PostgreSQL Best Practices Use connection pooling (PgBouncer) for web applications. Index foreign keys and frequently queried columns. Avoid N+1 queries—use JOINs or batch loading. For large tables, consider partitioning by date. Always use parameterized queries to prevent SQL injection. ## Redis Caching Patterns Use Redis for session storage, rate limiting, and cache-aside patterns. Set TTLs on cached data to prevent stale reads. Consider Redis Cluster for high availability. Monitor memory usage—Redis holds everything in RAM. ## HubSpot CRM Integration HubSpot offers a REST API and webhooks for real-time sync. Authentication uses private apps (access token) or OAuth for public apps. The CRM API covers contacts, companies, deals, and tickets. Use the Search API for complex queries. Webhook subscriptions require a valid endpoint that responds to verification challenges. ## Xero Accounting Integration Xero uses OAuth 2.0. The API base is https://api.xero.com/api.xro/2.0/. Endpoints include Invoices, Contacts, Payments, and BankTransactions. Connections are tenant-specific—multi-tenant apps must handle organization switching. Rate limits: 60 calls per minute per organization. ## PostgreSQL Best Practices Use connection pooling (PgBouncer) for web applications. Index foreign keys and frequently queried columns. Avoid N+1 queries—use JOINs or batch loading. For large tables, consider partitioning by date. Always use parameterized queries to prevent SQL injection. ## Redis Caching Patterns Use Redis for session storage, rate limiting, and cache-aside patterns. Set TTLs on cached data to prevent stale reads. Consider Redis Cluster for high availability. Monitor memory usage—Redis holds everything in RAM. ## HubSpot CRM Integration HubSpot offers a REST API and webhooks for real-time sync. Authentication uses private apps (access token) or OAuth for public apps. The CRM API covers contacts, companies, deals, and tickets. Use the Search API for complex queries. Webhook subscriptions require a valid endpoint that responds to verification challenges. ## Xero Accounting Integration Xero uses OAuth 2.0. The API base is https://api.xero.com/api.xro/2.0/. Endpoints include Invoices, Contacts, Payments, and BankTransactions. Connections are tenant-specific—multi-tenant apps must handle organization switching. Rate limits: 60 calls per minute per organization. ## PostgreSQL Best Practices Use connection pooling (PgBouncer) for web applications. Index foreign keys and frequently queried columns. Avoid N+1 queries—use JOINs or batch loading. For large tables, consider partitioning by date. Always use parameterized queries to prevent SQL injection. ## Redis Caching Patterns Use Redis for session storage, rate limiting, and cache-aside patterns. Set TTLs on cached data to prevent stale reads. Consider Redis Cluster for high availability. Monitor memory usage—Redis holds everything in RAM. ## HubSpot CRM Integration HubSpot offers a REST API and webhooks for real-time sync. Authentication uses private apps (access token) or OAuth for public apps. The CRM API covers contacts, companies, deals, and tickets. Use the Search API for complex queries. Webhook subscriptions require a valid endpoint that responds to verification challenges. ## Xero Accounting Integration Xero uses OAuth 2.0. The API base is https://api.xero.com/api.xro/2.0/. Endpoints include Invoices, Contacts, Payments, and BankTransactions. Connections are tenant-specific—multi-tenant apps must handle organization switching. Rate limits: 60 calls per minute per organization. ## PostgreSQL Best Practices Use connection pooling (PgBouncer) for web applications. Index foreign keys and frequently queried columns. Avoid N+1 queries—use JOINs or batch loading. For large tables, consider partitioning by date. Always use parameterized queries to prevent SQL injection. ## Redis Caching Patterns Use Redis for session storage, rate limiting, and cache-aside patterns. Set TTLs on cached data to prevent stale reads. Consider Redis Cluster for high availability. Monitor memory usage—Redis holds everything in RAM. ## HubSpot CRM Integration HubSpot offers a REST API and webhooks for real-time sync. Authentication uses private apps (access token) or OAuth for public apps. The CRM API covers contacts, companies, deals, and tickets. Use the Search API for complex queries. Webhook subscriptions require a valid endpoint that responds to verification challenges. ## Xero Accounting Integration Xero uses OAuth 2.0. The API base is https://api.xero.com/api.xro/2.0/. Endpoints include Invoices, Contacts, Payments, and BankTransactions. Connections are tenant-specific—multi-tenant apps must handle organization switching. Rate limits: 60 calls per minute per organization. ## PostgreSQL Best Practices Use connection pooling (PgBouncer) for web applications. Index foreign keys and frequently queried columns. Avoid N+1 queries—use JOINs or batch loading. For large tables, consider partitioning by date. Always use parameterized queries to prevent SQL injection. ## Redis Caching Patterns Use Redis for session storage, rate limiting, and cache-aside patterns. Set TTLs on cached data to prevent stale reads. Consider Redis Cluster for high availability. Monitor memory usage—Redis holds everything in RAM. ## HubSpot CRM Integration HubSpot offers a REST API and webhooks for real-time sync. Authentication uses private apps (access token) or OAuth for public apps. The CRM API covers contacts, companies, deals, and tickets. Use the Search API for complex queries. Webhook subscriptions require a valid endpoint that responds to verification challenges. ## Xero Accounting Integration Xero uses OAuth 2.0. The API base is https://api.xero.com/api.xro/2.0/. Endpoints include Invoices, Contacts, Payments, and BankTransactions. Connections are tenant-specific—multi-tenant apps must handle organization switching. Rate limits: 60 calls per minute per organization. ## PostgreSQL Best Practices Use connection pooling (PgBouncer) for web applications. Index foreign keys and frequently queried columns. Avoid N+1 queries—use JOINs or batch loading. For large tables, consider partitioning by date. Always use parameterized queries to prevent SQL injection. ## Redis Caching Patterns Use Redis for session storage, rate limiting, and cache-aside patterns. Set TTLs on cached data to prevent stale reads. Consider Redis Cluster for high availability. Monitor memory usage—Redis holds everything in RAM. ## HubSpot CRM Integration HubSpot offers a REST API and webhooks for real-time sync. Authentication uses private apps (access token) or OAuth for public apps. The CRM API covers contacts, companies, deals, and tickets. Use the Search API for complex queries. Webhook subscriptions require a valid endpoint that responds to verification challenges. ## Xero Accounting Integration Xero uses OAuth 2.0. The API base is https://api.xero.com/api.xro/2.0/. Endpoints include Invoices, Contacts, Payments, and BankTransactions. Connections are tenant-specific—multi-tenant apps must handle organization switching. Rate limits: 60 calls per minute per organization. ## PostgreSQL Best Practices Use connection pooling (PgBouncer) for web applications. Index foreign keys and frequently queried columns. Avoid N+1 queries—use JOINs or batch loading. For large tables, consider partitioning by date. Always use parameterized queries to prevent SQL injection. ## Redis Caching Patterns Use Redis for session storage, rate limiting, and cache-aside patterns. Set TTLs on cached data to prevent stale reads. Consider Redis Cluster for high availability. Monitor memory usage—Redis holds everything in RAM. ## HubSpot CRM Integration HubSpot offers a REST API and webhooks for real-time sync. Authentication uses private apps (access token) or OAuth for public apps. The CRM API covers contacts, companies, deals, and tickets. Use the Search API for complex queries. Webhook subscriptions require a valid endpoint that responds to verification challenges. ## Xero Accounting Integration Xero uses OAuth 2.0. The API base is https://api.xero.com/api.xro/2.0/. Endpoints include Invoices, Contacts, Payments, and BankTransactions. Connections are tenant-specific—multi-tenant apps must handle organization switching. Rate limits: 60 calls per minute per organization. ## PostgreSQL Best Practices Use connection pooling (PgBouncer) for web applications. Index foreign keys and frequently queried columns. Avoid N+1 queries—use JOINs or batch loading. For large tables, consider partitioning by date. Always use parameterized queries to prevent SQL injection. ## Redis Caching Patterns Use Redis for session storage, rate limiting, and cache-aside patterns. Set TTLs on cached data to prevent stale reads. Consider Redis Cluster for high availability. Monitor memory usage—Redis holds everything in RAM. ## HubSpot CRM Integration HubSpot offers a REST API and webhooks for real-time sync. Authentication uses private apps (access token) or OAuth for public apps. The CRM API covers contacts, companies, deals, and tickets. Use the Search API for complex queries. Webhook subscriptions require a valid endpoint that responds to verification challenges. ## Xero Accounting Integration Xero uses OAuth 2.0. The API base is https://api.xero.com/api.xro/2.0/. Endpoints include Invoices, Contacts, Payments, and BankTransactions. Connections are tenant-specific—multi-tenant apps must handle organization switching. Rate limits: 60 calls per minute per organization. ## PostgreSQL Best Practices Use connection pooling (PgBouncer) for web applications. Index foreign keys and frequently queried columns. Avoid N+1 queries—use JOINs or batch loading. For large tables, consider partitioning by date. Always use parameterized queries to prevent SQL injection. ## Redis Caching Patterns Use Redis for session storage, rate limiting, and cache-aside patterns. Set TTLs on cached data to prevent stale reads. Consider Redis Cluster for high availability. Monitor memory usage—Redis holds everything in RAM. ## HubSpot CRM Integration HubSpot offers a REST API and webhooks for real-time sync. Authentication uses private apps (access token) or OAuth for public apps. The CRM API covers contacts, companies, deals, and tickets. Use the Search API for complex queries. Webhook subscriptions require a valid endpoint that responds to verification challenges. ## Xero Accounting Integration Xero uses OAuth 2.0. The API base is https://api.xero.com/api.xro/2.0/. Endpoints include Invoices, Contacts, Payments, and BankTransactions. Connections are tenant-specific—multi-tenant apps must handle organization switching. Rate limits: 60 calls per minute per organization. ## PostgreSQL Best Practices Use connection pooling (PgBouncer) for web applications. Index foreign keys and frequently queried columns. Avoid N+1 queries—use JOINs or batch loading. For large tables, consider partitioning by date. Always use parameterized queries to prevent SQL injection. ## Redis Caching Patterns Use Redis for session storage, rate limiting, and cache-aside patterns. Set TTLs on cached data to prevent stale reads. Consider Redis Cluster for high availability. Monitor memory usage—Redis holds everything in RAM. ## HubSpot CRM Integration HubSpot offers a REST API and webhooks for real-time sync. Authentication uses private apps (access token) or OAuth for public apps. The CRM API covers contacts, companies, deals, and tickets. Use the Search API for complex queries. Webhook subscriptions require a valid endpoint that responds to verification challenges. ## Xero Accounting Integration Xero uses OAuth 2.0. The API base is https://api.xero.com/api.xro/2.0/. Endpoints include Invoices, Contacts, Payments, and BankTransactions. Connections are tenant-specific—multi-tenant apps must handle organization switching. Rate limits: 60 calls per minute per organization. ## PostgreSQL Best Practices Use connection pooling (PgBouncer) for web applications. Index foreign keys and frequently queried columns. Avoid N+1 queries—use JOINs or batch loading. For large tables, consider partitioning by date. Always use parameterized queries to prevent SQL injection. ## Redis Caching Patterns Use Redis for session storage, rate limiting, and cache-aside patterns. Set TTLs on cached data to prevent stale reads. Consider Redis Cluster for high availability. Monitor memory usage—Redis holds everything in RAM. ## HubSpot CRM Integration HubSpot offers a REST API and webhooks for real-time sync. Authentication uses private apps (access token) or OAuth for public apps. The CRM API covers contacts, companies, deals, and tickets. Use the Search API for complex queries. Webhook subscriptions require a valid endpoint that responds to verification challenges. ## Xero Accounting Integration Xero uses OAuth 2.0. The API base is https://api.xero.com/api.xro/2.0/. Endpoints include Invoices, Contacts, Payments, and BankTransactions. Connections are tenant-specific—multi-tenant apps must handle organization switching. Rate limits: 60 calls per minute per organization. ## PostgreSQL Best Practices Use connection pooling (PgBouncer) for web applications. Index foreign keys and frequently queried columns. Avoid N+1 queries—use JOINs or batch loading. For large tables, consider partitioning by date. Always use parameterized queries to prevent SQL injection. ## Redis Caching Patterns Use Redis for session storage, rate limiting, and cache-aside patterns. Set TTLs on cached data to prevent stale reads. Consider Redis Cluster for high availability. Monitor memory usage—Redis holds everything in RAM. ## HubSpot CRM Integration HubSpot offers a REST API and webhooks for real-time sync. Authentication uses private apps (access token) or OAuth for public apps. The CRM API covers contacts, companies, deals, and tickets. Use the Search API for complex queries. Webhook subscriptions require a valid endpoint that responds to verification challenges. ## Xero Accounting Integration Xero uses OAuth 2.0. The API base is https://api.xero.com/api.xro/2.0/. Endpoints include Invoices, Contacts, Payments, and BankTransactions. Connections are tenant-specific—multi-tenant apps must handle organization switching. Rate limits: 60 calls per minute per organization. ## PostgreSQL Best Practices Use connection pooling (PgBouncer) for web applications. Index foreign keys and frequently queried columns. Avoid N+1 queries—use JOINs or batch loading. For large tables, consider partitioning by date. Always use parameterized queries to prevent SQL injection. ## Redis Caching Patterns Use Redis for session storage, rate limiting, and cache-aside patterns. Set TTLs on cached data to prevent stale reads. Consider Redis Cluster for high availability. Monitor memory usage—Redis holds everything in RAM. ## HubSpot CRM Integration HubSpot offers a REST API and webhooks for real-time sync. Authentication uses private apps (access token) or OAuth for public apps. The CRM API covers contacts, companies, deals, and tickets. Use the Search API for complex queries. Webhook subscriptions require a valid endpoint that responds to verification challenges. ## Xero Accounting Integration Xero uses OAuth 2.0. The API base is https://api.xero.com/api.xro/2.0/. Endpoints include Invoices, Contacts, Payments, and BankTransactions. Connections are tenant-specific—multi-tenant apps must handle organization switching. Rate limits: 60 calls per minute per organization. ## PostgreSQL Best Practices Use connection pooling (PgBouncer) for web applications. Index foreign keys and frequently queried columns. Avoid N+1 queries—use JOINs or batch loading. For large tables, consider partitioning by date. Always use parameterized queries to prevent SQL injection. ## Redis Caching Patterns Use Redis for session storage, rate limiting, and cache-aside patterns. Set TTLs on cached data to prevent stale reads. Consider Redis Cluster for high availability. Monitor memory usage—Redis holds everything in RAM. ## HubSpot CRM Integration HubSpot offers a REST API and webhooks for real-time sync. Authentication uses private apps (access token) or OAuth for public apps. The CRM API covers contacts, companies, deals, and tickets. Use the Search API for complex queries. Webhook subscriptions require a valid endpoint that responds to verification challenges. ## Xero Accounting Integration Xero uses OAuth 2.0. The API base is https://api.xero.com/api.xro/2.0/. Endpoints include Invoices, Contacts, Payments, and BankTransactions. Connections are tenant-specific—multi-tenant apps must handle organization switching. Rate limits: 60 calls per minute per organization. ## PostgreSQL Best Practices Use connection pooling (PgBouncer) for web applications. Index foreign keys and frequently queried columns. Avoid N+1 queries—use JOINs or batch loading. For large tables, consider partitioning by date. Always use parameterized queries to prevent SQL injection. ## Redis Caching Patterns Use Redis for session storage, rate limiting, and cache-aside patterns. Set TTLs on cached data to prevent stale reads. Consider Redis Cluster for high availability. Monitor memory usage—Redis holds everything in RAM. ## HubSpot CRM Integration HubSpot offers a REST API and webhooks for real-time sync. Authentication uses private apps (access token) or OAuth for public apps. The CRM API covers contacts, companies, deals, and tickets. Use the Search API for complex queries. Webhook subscriptions require a valid endpoint that responds to verification challenges. ## Xero Accounting Integration Xero uses OAuth 2.0. The API base is https://api.xero.com/api.xro/2.0/. Endpoints include Invoices, Contacts, Payments, and BankTransactions. Connections are tenant-specific—multi-tenant apps must handle organization switching. Rate limits: 60 calls per minute per organization. ## PostgreSQL Best Practices Use connection pooling (PgBouncer) for web applications. Index foreign keys and frequently queried columns. Avoid N+1 queries—use JOINs or batch loading. For large tables, consider partitioning by date. Always use parameterized queries to prevent SQL injection. ## Redis Caching Patterns Use Redis for session storage, rate limiting, and cache-aside patterns. Set TTLs on cached data to prevent stale reads. Consider Redis Cluster for high availability. Monitor memory usage—Redis holds everything in RAM. ## HubSpot CRM Integration HubSpot offers a REST API and webhooks for real-time sync. Authentication uses private apps (access token) or OAuth for public apps. The CRM API covers contacts, companies, deals, and tickets. Use the Search API for complex queries. Webhook subscriptions require a valid endpoint that responds to verification challenges. ## Xero Accounting Integration Xero uses OAuth 2.0. The API base is https://api.xero.com/api.xro/2.0/. Endpoints include Invoices, Contacts, Payments, and BankTransactions. Connections are tenant-specific—multi-tenant apps must handle organization switching. Rate limits: 60 calls per minute per organization. ## PostgreSQL Best Practices Use connection pooling (PgBouncer) for web applications. Index foreign keys and frequently queried columns. Avoid N+1 queries—use JOINs or batch loading. For large tables, consider partitioning by date. Always use parameterized queries to prevent SQL injection. ## Redis Caching Patterns Use Redis for session storage, rate limiting, and cache-aside patterns. Set TTLs on cached data to prevent stale reads. Consider Redis Cluster for high availability. Monitor memory usage—Redis holds everything in RAM. ## HubSpot CRM Integration HubSpot offers a REST API and webhooks for real-time sync. Authentication uses private apps (access token) or OAuth for public apps. The CRM API covers contacts, companies, deals, and tickets. Use the Search API for complex queries. Webhook subscriptions require a valid endpoint that responds to verification challenges. ## Xero Accounting Integration Xero uses OAuth 2.0. The API base is https://api.xero.com/api.xro/2.0/. Endpoints include Invoices, Contacts, Payments, and BankTransactions. Connections are tenant-specific—multi-tenant apps must handle organization switching. Rate limits: 60 calls per minute per organization. ## PostgreSQL Best Practices Use connection pooling (PgBouncer) for web applications. Index foreign keys and frequently queried columns. Avoid N+1 queries—use JOINs or batch loading. For large tables, consider partitioning by date. Always use parameterized queries to prevent SQL injection. ## Redis Caching Patterns Use Redis for session storage, rate limiting, and cache-aside patterns. Set TTLs on cached data to prevent stale reads. Consider Redis Cluster for high availability. Monitor memory usage—Redis holds everything in RAM. ## HubSpot CRM Integration HubSpot offers a REST API and webhooks for real-time sync. Authentication uses private apps (access token) or OAuth for public apps. The CRM API covers contacts, companies, deals, and tickets. Use the Search API for complex queries. Webhook subscriptions require a valid endpoint that responds to verification challenges. ## Xero Accounting Integration Xero uses OAuth 2.0. The API base is https://api.xero.com/api.xro/2.0/. Endpoints include Invoices, Contacts, Payments, and BankTransactions. Connections are tenant-specific—multi-tenant apps must handle organization switching. Rate limits: 60 calls per minute per organization. ## PostgreSQL Best Practices Use connection pooling (PgBouncer) for web applications. Index foreign keys and frequently queried columns. Avoid N+1 queries—use JOINs or batch loading. For large tables, consider partitioning by date. Always use parameterized queries to prevent SQL injection. ## Redis Caching Patterns Use Redis for session storage, rate limiting, and cache-aside patterns. Set TTLs on cached data to prevent stale reads. Consider Redis Cluster for high availability. Monitor memory usage—Redis holds everything in RAM. ## HubSpot CRM Integration HubSpot offers a REST API and webhooks for real-time sync. Authentication uses private apps (access token) or OAuth for public apps. The CRM API covers contacts, companies, deals, and tickets. Use the Search API for complex queries. Webhook subscriptions require a valid endpoint that responds to verification challenges. ## Xero Accounting Integration Xero uses OAuth 2.0. The API base is https://api.xero.com/api.xro/2.0/. Endpoints include Invoices, Contacts, Payments, and BankTransactions. Connections are tenant-specific—multi-tenant apps must handle organization switching. Rate limits: 60 calls per minute per organization. ## PostgreSQL Best Practices Use connection pooling (PgBouncer) for web applications. Index foreign keys and frequently queried columns. Avoid N+1 queries—use JOINs or batch loading. For large tables, consider partitioning by date. Always use parameterized queries to prevent SQL injection. ## Redis Caching Patterns Use Redis for session storage, rate limiting, and cache-aside patterns. Set TTLs on cached data to prevent stale reads. Consider Redis Cluster for high availability. Monitor memory usage—Redis holds everything in RAM. ## HubSpot CRM Integration HubSpot offers a REST API and webhooks for real-time sync. Authentication uses private apps (access token) or OAuth for public apps. The CRM API covers contacts, companies, deals, and tickets. Use the Search API for complex queries. Webhook subscriptions require a valid endpoint that responds to verification challenges. ## Xero Accounting Integration Xero uses OAuth 2.0. The API base is https://api.xero.com/api.xro/2.0/. Endpoints include Invoices, Contacts, Payments, and BankTransactions. Connections are tenant-specific—multi-tenant apps must handle organization switching. Rate limits: 60 calls per minute per organization. ## PostgreSQL Best Practices Use connection pooling (PgBouncer) for web applications. Index foreign keys and frequently queried columns. Avoid N+1 queries—use JOINs or batch loading. For large tables, consider partitioning by date. Always use parameterized queries to prevent SQL injection. ## Redis Caching Patterns Use Redis for session storage, rate limiting, and cache-aside patterns. Set TTLs on cached data to prevent stale reads. Consider Redis Cluster for high availability. Monitor memory usage—Redis holds everything in RAM. ## HubSpot CRM Integration HubSpot offers a REST API and webhooks for real-time sync. Authentication uses private apps (access token) or OAuth for public apps. The CRM API covers contacts, companies, deals, and tickets. Use the Search API for complex queries. Webhook subscriptions require a valid endpoint that responds to verification challenges. ## Xero Accounting Integration Xero uses OAuth 2.0. The API base is https://api.xero.com/api.xro/2.0/. Endpoints include Invoices, Contacts, Payments, and BankTransactions. Connections are tenant-specific—multi-tenant apps must handle organization switching. Rate limits: 60 calls per minute per organization. ## PostgreSQL Best Practices Use connection pooling (PgBouncer) for web applications. Index foreign keys and frequently queried columns. Avoid N+1 queries—use JOINs or batch loading. For large tables, consider partitioning by date. Always use parameterized queries to prevent SQL injection. ## Redis Caching Patterns Use Redis for session storage, rate limiting, and cache-aside patterns. Set TTLs on cached data to prevent stale reads. Consider Redis Cluster for high availability. Monitor memory usage—Redis holds everything in RAM. ## HubSpot CRM Integration HubSpot offers a REST API and webhooks for real-time sync. Authentication uses private apps (access token) or OAuth for public apps. The CRM API covers contacts, companies, deals, and tickets. Use the Search API for complex queries. Webhook subscriptions require a valid endpoint that responds to verification challenges. ## Xero Accounting Integration Xero uses OAuth 2.0. The API base is https://api.xero.com/api.xro/2.0/. Endpoints include Invoices, Contacts, Payments, and BankTransactions. Connections are tenant-specific—multi-tenant apps must handle organization switching. Rate limits: 60 calls per minute per organization. ## PostgreSQL Best Practices Use connection pooling (PgBouncer) for web applications. Index foreign keys and frequently queried columns. Avoid N+1 queries—use JOINs or batch loading. For large tables, consider partitioning by date. Always use parameterized queries to prevent SQL injection. ## Redis Caching Patterns Use Redis for session storage, rate limiting, and cache-aside patterns. Set TTLs on cached data to prevent stale reads. Consider Redis Cluster for high availability. Monitor memory usage—Redis holds everything in RAM. ## HubSpot CRM Integration HubSpot offers a REST API and webhooks for real-time sync. Authentication uses private apps (access token) or OAuth for public apps. The CRM API covers contacts, companies, deals, and tickets. Use the Search API for complex queries. Webhook subscriptions require a valid endpoint that responds to verification challenges. ## Xero Accounting Integration Xero uses OAuth 2.0. The API base is https://api.xero.com/api.xro/2.0/. Endpoints include Invoices, Contacts, Payments, and BankTransactions. Connections are tenant-specific—multi-tenant apps must handle organization switching. Rate limits: 60 calls per minute per organization. ## PostgreSQL Best Practices Use connection pooling (PgBouncer) for web applications. Index foreign keys and frequently queried columns. Avoid N+1 queries—use JOINs or batch loading. For large tables, consider partitioning by date. Always use parameterized queries to prevent SQL injection. ## Redis Caching Patterns Use Redis for session storage, rate limiting, and cache-aside patterns. Set TTLs on cached data to prevent stale reads. Consider Redis Cluster for high availability. Monitor memory usage—Redis holds everything in RAM. ## HubSpot CRM Integration HubSpot offers a REST API and webhooks for real-time sync. Authentication uses private apps (access token) or OAuth for public apps. The CRM API covers contacts, companies, deals, and tickets. Use the Search API for complex queries. Webhook subscriptions require a valid endpoint that responds to verification challenges. ## Xero Accounting Integration Xero uses OAuth 2.0. The API base is https://api.xero.com/api.xro/2.0/. Endpoints include Invoices, Contacts, Payments, and BankTransactions. Connections are tenant-specific—multi-tenant apps must handle organization switching. Rate limits: 60 calls per minute per organization. ## PostgreSQL Best Practices Use connection pooling (PgBouncer) for web applications. Index foreign keys and frequently queried columns. Avoid N+1 queries—use JOINs or batch loading. For large tables, consider partitioning by date. Always use parameterized queries to prevent SQL injection. ## Redis Caching Patterns Use Redis for session storage, rate limiting, and cache-aside patterns. Set TTLs on cached data to prevent stale reads. Consider Redis Cluster for high availability. Monitor memory usage—Redis holds everything in RAM. ## HubSpot CRM Integration HubSpot offers a REST API and webhooks for real-time sync. Authentication uses private apps (access token) or OAuth for public apps. The CRM API covers contacts, companies, deals, and tickets. Use the Search API for complex queries. Webhook subscriptions require a valid endpoint that responds to verification challenges. ## Xero Accounting Integration Xero uses OAuth 2.0. The API base is https://api.xero.com/api.xro/2.0/. Endpoints include Invoices, Contacts, Payments, and BankTransactions. Connections are tenant-specific—multi-tenant apps must handle organization switching. Rate limits: 60 calls per minute per organization. ## PostgreSQL Best Practices Use connection pooling (PgBouncer) for web applications. Index foreign keys and frequently queried columns. Avoid N+1 queries—use JOINs or batch loading. For large tables, consider partitioning by date. Always use parameterized queries to prevent SQL injection. ## Redis Caching Patterns Use Redis for session storage, rate limiting, and cache-aside patterns. Set TTLs on cached data to prevent stale reads. Consider Redis Cluster for high availability. Monitor memory usage—Redis holds everything in RAM. ## HubSpot CRM Integration HubSpot offers a REST API and webhooks for real-time sync. Authentication uses private apps (access token) or OAuth for public apps. The CRM API covers contacts, companies, deals, and tickets. Use the Search API for complex queries. Webhook subscriptions require a valid endpoint that responds to verification challenges. ## Xero Accounting Integration Xero uses OAuth 2.0. The API base is https://api.xero.com/api.xro/2.0/. Endpoints include Invoices, Contacts, Payments, and BankTransactions. Connections are tenant-specific—multi-tenant apps must handle organization switching. Rate limits: 60 calls per minute per organization. ## PostgreSQL Best Practices Use connection pooling (PgBouncer) for web applications. Index foreign keys and frequently queried columns. Avoid N+1 queries—use JOINs or batch loading. For large tables, consider partitioning by date. Always use parameterized queries to prevent SQL injection. ## Redis Caching Patterns Use Redis for session storage, rate limiting, and cache-aside patterns. Set TTLs on cached data to prevent stale reads. Consider Redis Cluster for high availability. Monitor memory usage—Redis holds everything in RAM. ## HubSpot CRM Integration HubSpot offers a REST API and webhooks for real-time sync. Authentication uses private apps (access token) or OAuth for public apps. The CRM API covers contacts, companies, deals, and tickets. Use the Search API for complex queries. Webhook subscriptions require a valid endpoint that responds to verification challenges. ## Xero Accounting Integration Xero uses OAuth 2.0. The API base is https://api.xero.com/api.xro/2.0/. Endpoints include Invoices, Contacts, Payments, and BankTransactions. Connections are tenant-specific—multi-tenant apps must handle organization switching. Rate limits: 60 calls per minute per organization. ## PostgreSQL Best Practices Use connection pooling (PgBouncer) for web applications. Index foreign keys and frequently queried columns. Avoid N+1 queries—use JOINs or batch loading. For large tables, consider partitioning by date. Always use parameterized queries to prevent SQL injection. ## Redis Caching Patterns Use Redis for session storage, rate limiting, and cache-aside patterns. Set TTLs on cached data to prevent stale reads. Consider Redis Cluster for high availability. Monitor memory usage—Redis holds everything in RAM. ## HubSpot CRM Integration HubSpot offers a REST API and webhooks for real-time sync. Authentication uses private apps (access token) or OAuth for public apps. The CRM API covers contacts, companies, deals, and tickets. Use the Search API for complex queries. Webhook subscriptions require a valid endpoint that responds to verification challenges. ## Xero Accounting Integration Xero uses OAuth 2.0. The API base is https://api.xero.com/api.xro/2.0/. Endpoints include Invoices, Contacts, Payments, and BankTransactions. Connections are tenant-specific—multi-tenant apps must handle organization switching. Rate limits: 60 calls per minute per organization. ## PostgreSQL Best Practices Use connection pooling (PgBouncer) for web applications. Index foreign keys and frequently queried columns. Avoid N+1 queries—use JOINs or batch loading. For large tables, consider partitioning by date. Always use parameterized queries to prevent SQL injection. ## Redis Caching Patterns Use Redis for session storage, rate limiting, and cache-aside patterns. Set TTLs on cached data to prevent stale reads. Consider Redis Cluster for high availability. Monitor memory usage—Redis holds everything in RAM. ## HubSpot CRM Integration HubSpot offers a REST API and webhooks for real-time sync. Authentication uses private apps (access token) or OAuth for public apps. The CRM API covers contacts, companies, deals, and tickets. Use the Search API for complex queries. Webhook subscriptions require a valid endpoint that responds to verification challenges. ## Xero Accounting Integration Xero uses OAuth 2.0. The API base is https://api.xero.com/api.xro/2.0/. Endpoints include Invoices, Contacts, Payments, and BankTransactions. Connections are tenant-specific—multi-tenant apps must handle organization switching. Rate limits: 60 calls per minute per organization. ## PostgreSQL Best Practices Use connection pooling (PgBouncer) for web applications. Index foreign keys and frequently queried columns. Avoid N+1 queries—use JOINs or batch loading. For large tables, consider partitioning by date. Always use parameterized queries to prevent SQL injection. ## Redis Caching Patterns Use Redis for session storage, rate limiting, and cache-aside patterns. Set TTLs on cached data to prevent stale reads. Consider Redis Cluster for high availability. Monitor memory usage—Redis holds everything in RAM. ## HubSpot CRM Integration HubSpot offers a REST API and webhooks for real-time sync. Authentication uses private apps (access token) or OAuth for public apps. The CRM API covers contacts, companies, deals, and tickets. Use the Search API for complex queries. Webhook subscriptions require a valid endpoint that responds to verification challenges. ## Xero Accounting Integration Xero uses OAuth 2.0. The API base is https://api.xero.com/api.xro/2.0/. Endpoints include Invoices, Contacts, Payments, and BankTransactions. Connections are tenant-specific—multi-tenant apps must handle organization switching. Rate limits: 60 calls per minute per organization. ## PostgreSQL Best Practices Use connection pooling (PgBouncer) for web applications. Index foreign keys and frequently queried columns. Avoid N+1 queries—use JOINs or batch loading. For large tables, consider partitioning by date. Always use parameterized queries to prevent SQL injection. ## Redis Caching Patterns Use Redis for session storage, rate limiting, and cache-aside patterns. Set TTLs on cached data to prevent stale reads. Consider Redis Cluster for high availability. Monitor memory usage—Redis holds everything in RAM. ## HubSpot CRM Integration HubSpot offers a REST API and webhooks for real-time sync. Authentication uses private apps (access token) or OAuth for public apps. The CRM API covers contacts, companies, deals, and tickets. Use the Search API for complex queries. Webhook subscriptions require a valid endpoint that responds to verification challenges. ## Xero Accounting Integration Xero uses OAuth 2.0. The API base is https://api.xero.com/api.xro/2.0/. Endpoints include Invoices, Contacts, Payments, and BankTransactions. Connections are tenant-specific—multi-tenant apps must handle organization switching. Rate limits: 60 calls per minute per organization. ## PostgreSQL Best Practices Use connection pooling (PgBouncer) for web applications. Index foreign keys and frequently queried columns. Avoid N+1 queries—use JOINs or batch loading. For large tables, consider partitioning by date. Always use parameterized queries to prevent SQL injection. ## Redis Caching Patterns Use Redis for session storage, rate limiting, and cache-aside patterns. Set TTLs on cached data to prevent stale reads. Consider Redis Cluster for high availability. Monitor memory usage—Redis holds everything in RAM. ## HubSpot CRM Integration HubSpot offers a REST API and webhooks for real-time sync. Authentication uses private apps (access token) or OAuth for public apps. The CRM API covers contacts, companies, deals, and tickets. Use the Search API for complex queries. Webhook subscriptions require a valid endpoint that responds to verification challenges. ## Xero Accounting Integration Xero uses OAuth 2.0. The API base is https://api.xero.com/api.xro/2.0/. Endpoints include Invoices, Contacts, Payments, and BankTransactions. Connections are tenant-specific—multi-tenant apps must handle organization switching. Rate limits: 60 calls per minute per organization. ## PostgreSQL Best Practices Use connection pooling (PgBouncer) for web applications. Index foreign keys and frequently queried columns. Avoid N+1 queries—use JOINs or batch loading. For large tables, consider partitioning by date. Always use parameterized queries to prevent SQL injection. ## Redis Caching Patterns Use Redis for session storage, rate limiting, and cache-aside patterns. Set TTLs on cached data to prevent stale reads. Consider Redis Cluster for high availability. Monitor memory usage—Redis holds everything in RAM. ## HubSpot CRM Integration HubSpot offers a REST API and webhooks for real-time sync. Authentication uses private apps (access token) or OAuth for public apps. The CRM API covers contacts, companies, deals, and tickets. Use the Search API for complex queries. Webhook subscriptions require a valid endpoint that responds to verification challenges. ## Xero Accounting Integration Xero uses OAuth 2.0. The API base is https://api.xero.com/api.xro/2.0/. Endpoints include Invoices, Contacts, Payments, and BankTransactions. Connections are tenant-specific—multi-tenant apps must handle organization switching. Rate limits: 60 calls per minute per organization. ## PostgreSQL Best Practices Use connection pooling (PgBouncer) for web applications. Index foreign keys and frequently queried columns. Avoid N+1 queries—use JOINs or batch loading. For large tables, consider partitioning by date. Always use parameterized queries to prevent SQL injection. ## Redis Caching Patterns Use Redis for session storage, rate limiting, and cache-aside patterns. Set TTLs on cached data to prevent stale reads. Consider Redis Cluster for high availability. Monitor memory usage—Redis holds everything in RAM. ## HubSpot CRM Integration HubSpot offers a REST API and webhooks for real-time sync. Authentication uses private apps (access token) or OAuth for public apps. The CRM API covers contacts, companies, deals, and tickets. Use the Search API for complex queries. Webhook subscriptions require a valid endpoint that responds to verification challenges. ## Xero Accounting Integration Xero uses OAuth 2.0. The API base is https://api.xero.com/api.xro/2.0/. Endpoints include Invoices, Contacts, Payments, and BankTransactions. Connections are tenant-specific—multi-tenant apps must handle organization switching. Rate limits: 60 calls per minute per organization. ## PostgreSQL Best Practices Use connection pooling (PgBouncer) for web applications. Index foreign keys and frequently queried columns. Avoid N+1 queries—use JOINs or batch loading. For large tables, consider partitioning by date. Always use parameterized queries to prevent SQL injection. ## Redis Caching Patterns Use Redis for session storage, rate limiting, and cache-aside patterns. Set TTLs on cached data to prevent stale reads. Consider Redis Cluster for high availability. Monitor memory usage—Redis holds everything in RAM. ## HubSpot CRM Integration HubSpot offers a REST API and webhooks for real-time sync. Authentication uses private apps (access token) or OAuth for public apps. The CRM API covers contacts, companies, deals, and tickets. Use the Search API for complex queries. Webhook subscriptions require a valid endpoint that responds to verification challenges. ## Xero Accounting Integration Xero uses OAuth 2.0. The API base is https://api.xero.com/api.xro/2.0/. Endpoints include Invoices, Contacts, Payments, and BankTransactions. Connections are tenant-specific—multi-tenant apps must handle organization switching. Rate limits: 60 calls per minute per organization. ## PostgreSQL Best Practices Use connection pooling (PgBouncer) for web applications. Index foreign keys and frequently queried columns. Avoid N+1 queries—use JOINs or batch loading. For large tables, consider partitioning by date. Always use parameterized queries to prevent SQL injection. ## Redis Caching Patterns Use Redis for session storage, rate limiting, and cache-aside patterns. Set TTLs on cached data to prevent stale reads. Consider Redis Cluster for high availability. Monitor memory usage—Redis holds everything in RAM. ## HubSpot CRM Integration HubSpot offers a REST API and webhooks for real-time sync. Authentication uses private apps (access token) or OAuth for public apps. The CRM API covers contacts, companies, deals, and tickets. Use the Search API for complex queries. Webhook subscriptions require a valid endpoint that responds to verification challenges. ## Xero Accounting Integration Xero uses OAuth 2.0. The API base is https://api.xero.com/api.xro/2.0/. Endpoints include Invoices, Contacts, Payments, and BankTransactions. Connections are tenant-specific—multi-tenant apps must handle organization switching. Rate limits: 60 calls per minute per organization. ## PostgreSQL Best Practices Use connection pooling (PgBouncer) for web applications. Index foreign keys and frequently queried columns. Avoid N+1 queries—use JOINs or batch loading. For large tables, consider partitioning by date. Always use parameterized queries to prevent SQL injection. ## Redis Caching Patterns Use Redis for session storage, rate limiting, and cache-aside patterns. Set TTLs on cached data to prevent stale reads. Consider Redis Cluster for high availability. Monitor memory usage—Redis holds everything in RAM. ## HubSpot CRM Integration HubSpot offers a REST API and webhooks for real-time sync. Authentication uses private apps (access token) or OAuth for public apps. The CRM API covers contacts, companies, deals, and tickets. Use the Search API for complex queries. Webhook subscriptions require a valid endpoint that responds to verification challenges. ## Xero Accounting Integration Xero uses OAuth 2.0. The API base is https://api.xero.com/api.xro/2.0/. Endpoints include Invoices, Contacts, Payments, and BankTransactions. Connections are tenant-specific—multi-tenant apps must handle organization switching. Rate limits: 60 calls per minute per organization. ## PostgreSQL Best Practices Use connection pooling (PgBouncer) for web applications. Index foreign keys and frequently queried columns. Avoid N+1 queries—use JOINs or batch loading. For large tables, consider partitioning by date. Always use parameterized queries to prevent SQL injection. ## Redis Caching Patterns Use Redis for session storage, rate limiting, and cache-aside patterns. Set TTLs on cached data to prevent stale reads. Consider Redis Cluster for high availability. Monitor memory usage—Redis holds everything in RAM. ## HubSpot CRM Integration HubSpot offers a REST API and webhooks for real-time sync. Authentication uses private apps (access token) or OAuth for public apps. The CRM API covers contacts, companies, deals, and tickets. Use the Search API for complex queries. Webhook subscriptions require a valid endpoint that responds to verification challenges. ## Xero Accounting Integration Xero uses OAuth 2.0. The API base is https://api.xero.com/api.xro/2.0/. Endpoints include Invoices, Contacts, Payments, and BankTransactions. Connections are tenant-specific—multi-tenant apps must handle organization switching. Rate limits: 60 calls per minute per organization. ## PostgreSQL Best Practices Use connection pooling (PgBouncer) for web applications. Index foreign keys and frequently queried columns. Avoid N+1 queries—use JOINs or batch loading. For large tables, consider partitioning by date. Always use parameterized queries to prevent SQL injection. ## Redis Caching Patterns Use Redis for session storage, rate limiting, and cache-aside patterns. Set TTLs on cached data to prevent stale reads. Consider Redis Cluster for high availability. Monitor memory usage—Redis holds everything in RAM. ## HubSpot CRM Integration HubSpot offers a REST API and webhooks for real-time sync. Authentication uses private apps (access token) or OAuth for public apps. The CRM API covers contacts, companies, deals, and tickets. Use the Search API for complex queries. Webhook subscriptions require a valid endpoint that responds to verification challenges. ## Xero Accounting Integration Xero uses OAuth 2.0. The API base is https://api.xero.com/api.xro/2.0/. Endpoints include Invoices, Contacts, Payments, and BankTransactions. Connections are tenant-specific—multi-tenant apps must handle organization switching. Rate limits: 60 calls per minute per organization. ## PostgreSQL Best Practices Use connection pooling (PgBouncer) for web applications. Index foreign keys and frequently queried columns. Avoid N+1 queries—use JOINs or batch loading. For large tables, consider partitioning by date. Always use parameterized queries to prevent SQL injection. ## Redis Caching Patterns Use Redis for session storage, rate limiting, and cache-aside patterns. Set TTLs on cached data to prevent stale reads. Consider Redis Cluster for high availability. Monitor memory usage—Redis holds everything in RAM. ## HubSpot CRM Integration HubSpot offers a REST API and webhooks for real-time sync. Authentication uses private apps (access token) or OAuth for public apps. The CRM API covers contacts, companies, deals, and tickets. Use the Search API for complex queries. Webhook subscriptions require a valid endpoint that responds to verification challenges. ## Xero Accounting Integration Xero uses OAuth 2.0. The API base is https://api.xero.com/api.xro/2.0/. Endpoints include Invoices, Contacts, Payments, and BankTransactions. Connections are tenant-specific—multi-tenant apps must handle organization switching. Rate limits: 60 calls per minute per organization. ## PostgreSQL Best Practices Use connection pooling (PgBouncer) for web applications. Index foreign keys and frequently queried columns. Avoid N+1 queries—use JOINs or batch loading. For large tables, consider partitioning by date. Always use parameterized queries to prevent SQL injection. ## Redis Caching Patterns Use Redis for session storage, rate limiting, and cache-aside patterns. Set TTLs on cached data to prevent stale reads. Consider Redis Cluster for high availability. Monitor memory usage—Redis holds everything in RAM. ## HubSpot CRM Integration HubSpot offers a REST API and webhooks for real-time sync. Authentication uses private apps (access token) or OAuth for public apps. The CRM API covers contacts, companies, deals, and tickets. Use the Search API for complex queries. Webhook subscriptions require a valid endpoint that responds to verification challenges. ## Xero Accounting Integration Xero uses OAuth 2.0. The API base is https://api.xero.com/api.xro/2.0/. Endpoints include Invoices, Contacts, Payments, and BankTransactions. Connections are tenant-specific—multi-tenant apps must handle organization switching. Rate limits: 60 calls per minute per organization. ## PostgreSQL Best Practices Use connection pooling (PgBouncer) for web applications. Index foreign keys and frequently queried columns. Avoid N+1 queries—use JOINs or batch loading. For large tables, consider partitioning by date. Always use parameterized queries to prevent SQL injection. ## Redis Caching Patterns Use Redis for session storage, rate limiting, and cache-aside patterns. Set TTLs on cached data to prevent stale reads. Consider Redis Cluster for high availability. Monitor memory usage—Redis holds everything in RAM. ## HubSpot CRM Integration HubSpot offers a REST API and webhooks for real-time sync. Authentication uses private apps (access token) or OAuth for public apps. The CRM API covers contacts, companies, deals, and tickets. Use the Search API for complex queries. Webhook subscriptions require a valid endpoint that responds to verification challenges. ## Xero Accounting Integration Xero uses OAuth 2.0. The API base is https://api.xero.com/api.xro/2.0/. Endpoints include Invoices, Contacts, Payments, and BankTransactions. Connections are tenant-specific—multi-tenant apps must handle organization switching. Rate limits: 60 calls per minute per organization. ## PostgreSQL Best Practices Use connection pooling (PgBouncer) for web applications. Index foreign keys and frequently queried columns. Avoid N+1 queries—use JOINs or batch loading. For large tables, consider partitioning by date. Always use parameterized queries to prevent SQL injection. ## Redis Caching Patterns Use Redis for session storage, rate limiting, and cache-aside patterns. Set TTLs on cached data to prevent stale reads. Consider Redis Cluster for high availability. Monitor memory usage—Redis holds everything in RAM. ## HubSpot CRM Integration HubSpot offers a REST API and webhooks for real-time sync. Authentication uses private apps (access token) or OAuth for public apps. The CRM API covers contacts, companies, deals, and tickets. Use the Search API for complex queries. Webhook subscriptions require a valid endpoint that responds to verification challenges. ## Xero Accounting Integration Xero uses OAuth 2.0. The API base is https://api.xero.com/api.xro/2.0/. Endpoints include Invoices, Contacts, Payments, and BankTransactions. Connections are tenant-specific—multi-tenant apps must handle organization switching. Rate limits: 60 calls per minute per organization. ## PostgreSQL Best Practices Use connection pooling (PgBouncer) for web applications. Index foreign keys and frequently queried columns. Avoid N+1 queries—use JOINs or batch loading. For large tables, consider partitioning by date. Always use parameterized queries to prevent SQL injection. ## Redis Caching Patterns Use Redis for session storage, rate limiting, and cache-aside patterns. Set TTLs on cached data to prevent stale reads. Consider Redis Cluster for high availability. Monitor memory usage—Redis holds everything in RAM. ## HubSpot CRM Integration HubSpot offers a REST API and webhooks for real-time sync. Authentication uses private apps (access token) or OAuth for public apps. The CRM API covers contacts, companies, deals, and tickets. Use the Search API for complex queries. Webhook subscriptions require a valid endpoint that responds to verification challenges. ## Xero Accounting Integration Xero uses OAuth 2.0. The API base is https://api.xero.com/api.xro/2.0/. Endpoints include Invoices, Contacts, Payments, and BankTransactions. Connections are tenant-specific—multi-tenant apps must handle organization switching. Rate limits: 60 calls per minute per organization. ## PostgreSQL Best Practices Use connection pooling (PgBouncer) for web applications. Index foreign keys and frequently queried columns. Avoid N+1 queries—use JOINs or batch loading. For large tables, consider partitioning by date. Always use parameterized queries to prevent SQL injection. ## Redis Caching Patterns Use Redis for session storage, rate limiting, and cache-aside patterns. Set TTLs on cached data to prevent stale reads. Consider Redis Cluster for high availability. Monitor memory usage—Redis holds everything in RAM. ## HubSpot CRM Integration HubSpot offers a REST API and webhooks for real-time sync. Authentication uses private apps (access token) or OAuth for public apps. The CRM API covers contacts, companies, deals, and tickets. Use the Search API for complex queries. Webhook subscriptions require a valid endpoint that responds to verification challenges. ## Xero Accounting Integration Xero uses OAuth 2.0. The API base is https://api.xero.com/api.xro/2.0/. Endpoints include Invoices, Contacts, Payments, and BankTransactions. Connections are tenant-specific—multi-tenant apps must handle organization switching. Rate limits: 60 calls per minute per organization. ## PostgreSQL Best Practices Use connection pooling (PgBouncer) for web applications. Index foreign keys and frequently queried columns. Avoid N+1 queries—use JOINs or batch loading. For large tables, consider partitioning by date. Always use parameterized queries to prevent SQL injection. ## Redis Caching Patterns Use Redis for session storage, rate limiting, and cache-aside patterns. Set TTLs on cached data to prevent stale reads. Consider Redis Cluster for high availability. Monitor memory usage—Redis holds everything in RAM. ## HubSpot CRM Integration HubSpot offers a REST API and webhooks for real-time sync. Authentication uses private apps (access token) or OAuth for public apps. The CRM API covers contacts, companies, deals, and tickets. Use the Search API for complex queries. Webhook subscriptions require a valid endpoint that responds to verification challenges. ## Xero Accounting Integration Xero uses OAuth 2.0. The API base is https://api.xero.com/api.xro/2.0/. Endpoints include Invoices, Contacts, Payments, and BankTransactions. Connections are tenant-specific—multi-tenant apps must handle organization switching. Rate limits: 60 calls per minute per organization. ## PostgreSQL Best Practices Use connection pooling (PgBouncer) for web applications. Index foreign keys and frequently queried columns. Avoid N+1 queries—use JOINs or batch loading. For large tables, consider partitioning by date. Always use parameterized queries to prevent SQL injection. ## Redis Caching Patterns Use Redis for session storage, rate limiting, and cache-aside patterns. Set TTLs on cached data to prevent stale reads. Consider Redis Cluster for high availability. Monitor memory usage—Redis holds everything in RAM. ## HubSpot CRM Integration HubSpot offers a REST API and webhooks for real-time sync. Authentication uses private apps (access token) or OAuth for public apps. The CRM API covers contacts, companies, deals, and tickets. Use the Search API for complex queries. Webhook subscriptions require a valid endpoint that responds to verification challenges. ## Xero Accounting Integration Xero uses OAuth 2.0. The API base is https://api.xero.com/api.xro/2.0/. Endpoints include Invoices, Contacts, Payments, and BankTransactions. Connections are tenant-specific—multi-tenant apps must handle organization switching. Rate limits: 60 calls per minute per organization. ## PostgreSQL Best Practices Use connection pooling (PgBouncer) for web applications. Index foreign keys and frequently queried columns. Avoid N+1 queries—use JOINs or batch loading. For large tables, consider partitioning by date. Always use parameterized queries to prevent SQL injection. ## Redis Caching Patterns Use Redis for session storage, rate limiting, and cache-aside patterns. Set TTLs on cached data to prevent stale reads. Consider Redis Cluster for high availability. Monitor memory usage—Redis holds everything in RAM. ## HubSpot CRM Integration HubSpot offers a REST API and webhooks for real-time sync. Authentication uses private apps (access token) or OAuth for public apps. The CRM API covers contacts, companies, deals, and tickets. Use the Search API for complex queries. Webhook subscriptions require a valid endpoint that responds to verification challenges. ## Xero Accounting Integration Xero uses OAuth 2.0. The API base is https://api.xero.com/api.xro/2.0/. Endpoints include Invoices, Contacts, Payments, and BankTransactions. Connections are tenant-specific—multi-tenant apps must handle organization switching. Rate limits: 60 calls per minute per organization. ## PostgreSQL Best Practices Use connection pooling (PgBouncer) for web applications. Index foreign keys and frequently queried columns. Avoid N+1 queries—use JOINs or batch loading. For large tables, consider partitioning by date. Always use parameterized queries to prevent SQL injection. ## Redis Caching Patterns Use Redis for session storage, rate limiting, and cache-aside patterns. Set TTLs on cached data to prevent stale reads. Consider Redis Cluster for high availability. Monitor memory usage—Redis holds everything in RAM. ## HubSpot CRM Integration HubSpot offers a REST API and webhooks for real-time sync. Authentication uses private apps (access token) or OAuth for public apps. The CRM API covers contacts, companies, deals, and tickets. Use the Search API for complex queries. Webhook subscriptions require a valid endpoint that responds to verification challenges. ## Xero Accounting Integration Xero uses OAuth 2.0. The API base is https://api.xero.com/api.xro/2.0/. Endpoints include Invoices, Contacts, Payments, and BankTransactions. Connections are tenant-specific—multi-tenant apps must handle organization switching. Rate limits: 60 calls per minute per organization. ## PostgreSQL Best Practices Use connection pooling (PgBouncer) for web applications. Index foreign keys and frequently queried columns. Avoid N+1 queries—use JOINs or batch loading. For large tables, consider partitioning by date. Always use parameterized queries to prevent SQL injection. ## Redis Caching Patterns Use Redis for session storage, rate limiting, and cache-aside patterns. Set TTLs on cached data to prevent stale reads. Consider Redis Cluster for high availability. Monitor memory usage—Redis holds everything in RAM. ## HubSpot CRM Integration HubSpot offers a REST API and webhooks for real-time sync. Authentication uses private apps (access token) or OAuth for public apps. The CRM API covers contacts, companies, deals, and tickets. Use the Search API for complex queries. Webhook subscriptions require a valid endpoint that responds to verification challenges. ## Xero Accounting Integration Xero uses OAuth 2.0. The API base is https://api.xero.com/api.xro/2.0/. Endpoints include Invoices, Contacts, Payments, and BankTransactions. Connections are tenant-specific—multi-tenant apps must handle organization switching. Rate limits: 60 calls per minute per organization. ## PostgreSQL Best Practices Use connection pooling (PgBouncer) for web applications. Index foreign keys and frequently queried columns. Avoid N+1 queries—use JOINs or batch loading. For large tables, consider partitioning by date. Always use parameterized queries to prevent SQL injection. ## Redis Caching Patterns Use Redis for session storage, rate limiting, and cache-aside patterns. Set TTLs on cached data to prevent stale reads. Consider Redis Cluster for high availability. Monitor memory usage—Redis holds everything in RAM. ## HubSpot CRM Integration HubSpot offers a REST API and webhooks for real-time sync. Authentication uses private apps (access token) or OAuth for public apps. The CRM API covers contacts, companies, deals, and tickets. Use the Search API for complex queries. Webhook subscriptions require a valid endpoint that responds to verification challenges. ## Xero Accounting Integration Xero uses OAuth 2.0. The API base is https://api.xero.com/api.xro/2.0/. Endpoints include Invoices, Contacts, Payments, and BankTransactions. Connections are tenant-specific—multi-tenant apps must handle organization switching. Rate limits: 60 calls per minute per organization. ## PostgreSQL Best Practices Use connection pooling (PgBouncer) for web applications. Index foreign keys and frequently queried columns. Avoid N+1 queries—use JOINs or batch loading. For large tables, consider partitioning by date. Always use parameterized queries to prevent SQL injection. ## Redis Caching Patterns Use Redis for session storage, rate limiting, and cache-aside patterns. Set TTLs on cached data to prevent stale reads. Consider Redis Cluster for high availability. Monitor memory usage—Redis holds everything in RAM. ## HubSpot CRM Integration HubSpot offers a REST API and webhooks for real-time sync. Authentication uses private apps (access token) or OAuth for public apps. The CRM API covers contacts, companies, deals, and tickets. Use the Search API for complex queries. Webhook subscriptions require a valid endpoint that responds to verification challenges. ## Xero Accounting Integration Xero uses OAuth 2.0. The API base is https://api.xero.com/api.xro/2.0/. Endpoints include Invoices, Contacts, Payments, and BankTransactions. Connections are tenant-specific—multi-tenant apps must handle organization switching. Rate limits: 60 calls per minute per organization. ## PostgreSQL Best Practices Use connection pooling (PgBouncer) for web applications. Index foreign keys and frequently queried columns. Avoid N+1 queries—use JOINs or batch loading. For large tables, consider partitioning by date. Always use parameterized queries to prevent SQL injection. ## Redis Caching Patterns Use Redis for session storage, rate limiting, and cache-aside patterns. Set TTLs on cached data to prevent stale reads. Consider Redis Cluster for high availability. Monitor memory usage—Redis holds everything in RAM. ## HubSpot CRM Integration HubSpot offers a REST API and webhooks for real-time sync. Authentication uses private apps (access token) or OAuth for public apps. The CRM API covers contacts, companies, deals, and tickets. Use the Search API for complex queries. Webhook subscriptions require a valid endpoint that responds to verification challenges. ## Xero Accounting Integration Xero uses OAuth 2.0. The API base is https://api.xero.com/api.xro/2.0/. Endpoints include Invoices, Contacts, Payments, and BankTransactions. Connections are tenant-specific—multi-tenant apps must handle organization switching. Rate limits: 60 calls per minute per organization. ## PostgreSQL Best Practices Use connection pooling (PgBouncer) for web applications. Index foreign keys and frequently queried columns. Avoid N+1 queries—use JOINs or batch loading. For large tables, consider partitioning by date. Always use parameterized queries to prevent SQL injection. ## Redis Caching Patterns Use Redis for session storage, rate limiting, and cache-aside patterns. Set TTLs on cached data to prevent stale reads. Consider Redis Cluster for high availability. Monitor memory usage—Redis holds everything in RAM. ## HubSpot CRM Integration HubSpot offers a REST API and webhooks for real-time sync. Authentication uses private apps (access token) or OAuth for public apps. The CRM API covers contacts, companies, deals, and tickets. Use the Search API for complex queries. Webhook subscriptions require a valid endpoint that responds to verification challenges. ## Xero Accounting Integration Xero uses OAuth 2.0. The API base is https://api.xero.com/api.xro/2.0/. Endpoints include Invoices, Contacts, Payments, and BankTransactions. Connections are tenant-specific—multi-tenant apps must handle organization switching. Rate limits: 60 calls per minute per organization. ## PostgreSQL Best Practices Use connection pooling (PgBouncer) for web applications. Index foreign keys and frequently queried columns. Avoid N+1 queries—use JOINs or batch loading. For large tables, consider partitioning by date. Always use parameterized queries to prevent SQL injection. ## Redis Caching Patterns Use Redis for session storage, rate limiting, and cache-aside patterns. Set TTLs on cached data to prevent stale reads. Consider Redis Cluster for high availability. Monitor memory usage—Redis holds everything in RAM. ## HubSpot CRM Integration HubSpot offers a REST API and webhooks for real-time sync. Authentication uses private apps (access token) or OAuth for public apps. The CRM API covers contacts, companies, deals, and tickets. Use the Search API for complex queries. Webhook subscriptions require a valid endpoint that responds to verification challenges. ## Xero Accounting Integration Xero uses OAuth 2.0. The API base is https://api.xero.com/api.xro/2.0/. Endpoints include Invoices, Contacts, Payments, and BankTransactions. Connections are tenant-specific—multi-tenant apps must handle organization switching. Rate limits: 60 calls per minute per organization. ## PostgreSQL Best Practices Use connection pooling (PgBouncer) for web applications. Index foreign keys and frequently queried columns. Avoid N+1 queries—use JOINs or batch loading. For large tables, consider partitioning by date. Always use parameterized queries to prevent SQL injection. ## Redis Caching Patterns Use Redis for session storage, rate limiting, and cache-aside patterns. Set TTLs on cached data to prevent stale reads. Consider Redis Cluster for high availability. Monitor memory usage—Redis holds everything in RAM. ## HubSpot CRM Integration HubSpot offers a REST API and webhooks for real-time sync. Authentication uses private apps (access token) or OAuth for public apps. The CRM API covers contacts, companies, deals, and tickets. Use the Search API for complex queries. Webhook subscriptions require a valid endpoint that responds to verification challenges. ## Xero Accounting Integration Xero uses OAuth 2.0. The API base is https://api.xero.com/api.xro/2.0/. Endpoints include Invoices, Contacts, Payments, and BankTransactions. Connections are tenant-specific—multi-tenant apps must handle organization switching. Rate limits: 60 calls per minute per organization. ## PostgreSQL Best Practices Use connection pooling (PgBouncer) for web applications. Index foreign keys and frequently queried columns. Avoid N+1 queries—use JOINs or batch loading. For large tables, consider partitioning by date. Always use parameterized queries to prevent SQL injection. ## Redis Caching Patterns Use Redis for session storage, rate limiting, and cache-aside patterns. Set TTLs on cached data to prevent stale reads. Consider Redis Cluster for high availability. Monitor memory usage—Redis holds everything in RAM. ## HubSpot CRM Integration HubSpot offers a REST API and webhooks for real-time sync. Authentication uses private apps (access token) or OAuth for public apps. The CRM API covers contacts, companies, deals, and tickets. Use the Search API for complex queries. Webhook subscriptions require a valid endpoint that responds to verification challenges. ## Xero Accounting Integration Xero uses OAuth 2.0. The API base is https://api.xero.com/api.xro/2.0/. Endpoints include Invoices, Contacts, Payments, and BankTransactions. Connections are tenant-specific—multi-tenant apps must handle organization switching. Rate limits: 60 calls per minute per organization. ## PostgreSQL Best Practices Use connection pooling (PgBouncer) for web applications. Index foreign keys and frequently queried columns. Avoid N+1 queries—use JOINs or batch loading. For large tables, consider partitioning by date. Always use parameterized queries to prevent SQL injection. ## Redis Caching Patterns Use Redis for session storage, rate limiting, and cache-aside patterns. Set TTLs on cached data to prevent stale reads. Consider Redis Cluster for high availability. Monitor memory usage—Redis holds everything in RAM. ## HubSpot CRM Integration HubSpot offers a REST API and webhooks for real-time sync. Authentication uses private apps (access token) or OAuth for public apps. The CRM API covers contacts, companies, deals, and tickets. Use the Search API for complex queries. Webhook subscriptions require a valid endpoint that responds to verification challenges. ## Xero Accounting Integration Xero uses OAuth 2.0. The API base is https://api.xero.com/api.xro/2.0/. Endpoints include Invoices, Contacts, Payments, and BankTransactions. Connections are tenant-specific—multi-tenant apps must handle organization switching. Rate limits: 60 calls per minute per organization. ## PostgreSQL Best Practices Use connection pooling (PgBouncer) for web applications. Index foreign keys and frequently queried columns. Avoid N+1 queries—use JOINs or batch loading. For large tables, consider partitioning by date. Always use parameterized queries to prevent SQL injection. ## Redis Caching Patterns Use Redis for session storage, rate limiting, and cache-aside patterns. Set TTLs on cached data to prevent stale reads. Consider Redis Cluster for high availability. Monitor memory usage—Redis holds everything in RAM. ## HubSpot CRM Integration HubSpot offers a REST API and webhooks for real-time sync. Authentication uses private apps (access token) or OAuth for public apps. The CRM API covers contacts, companies, deals, and tickets. Use the Search API for complex queries. Webhook subscriptions require a valid endpoint that responds to verification challenges. ## Xero Accounting Integration Xero uses OAuth 2.0. The API base is https://api.xero.com/api.xro/2.0/. Endpoints include Invoices, Contacts, Payments, and BankTransactions. Connections are tenant-specific—multi-tenant apps must handle organization switching. Rate limits: 60 calls per minute per organization. ## PostgreSQL Best Practices Use connection pooling (PgBouncer) for web applications. Index foreign keys and frequently queried columns. Avoid N+1 queries—use JOINs or batch loading. For large tables, consider partitioning by date. Always use parameterized queries to prevent SQL injection. ## Redis Caching Patterns Use Redis for session storage, rate limiting, and cache-aside patterns. Set TTLs on cached data to prevent stale reads. Consider Redis Cluster for high availability. Monitor memory usage—Redis holds everything in RAM. ## HubSpot CRM Integration HubSpot offers a REST API and webhooks for real-time sync. Authentication uses private apps (access token) or OAuth for public apps. The CRM API covers contacts, companies, deals, and tickets. Use the Search API for complex queries. Webhook subscriptions require a valid endpoint that responds to verification challenges. ## Xero Accounting Integration Xero uses OAuth 2.0. The API base is https://api.xero.com/api.xro/2.0/. Endpoints include Invoices, Contacts, Payments, and BankTransactions. Connections are tenant-specific—multi-tenant apps must handle organization switching. Rate limits: 60 calls per minute per organization. ## PostgreSQL Best Practices Use connection pooling (PgBouncer) for web applications. Index foreign keys and frequently queried columns. Avoid N+1 queries—use JOINs or batch loading. For large tables, consider partitioning by date. Always use parameterized queries to prevent SQL injection. ## Redis Caching Patterns Use Redis for session storage, rate limiting, and cache-aside patterns. Set TTLs on cached data to prevent stale reads. Consider Redis Cluster for high availability. Monitor memory usage—Redis holds everything in RAM. ## HubSpot CRM Integration HubSpot offers a REST API and webhooks for real-time sync. Authentication uses private apps (access token) or OAuth for public apps. The CRM API covers contacts, companies, deals, and tickets. Use the Search API for complex queries. Webhook subscriptions require a valid endpoint that responds to verification challenges. ## Xero Accounting Integration Xero uses OAuth 2.0. The API base is https://api.xero.com/api.xro/2.0/. Endpoints include Invoices, Contacts, Payments, and BankTransactions. Connections are tenant-specific—multi-tenant apps must handle organization switching. Rate limits: 60 calls per minute per organization. ## PostgreSQL Best Practices Use connection pooling (PgBouncer) for web applications. Index foreign keys and frequently queried columns. Avoid N+1 queries—use JOINs or batch loading. For large tables, consider partitioning by date. Always use parameterized queries to prevent SQL injection. ## Redis Caching Patterns Use Redis for session storage, rate limiting, and cache-aside patterns. Set TTLs on cached data to prevent stale reads. Consider Redis Cluster for high availability. Monitor memory usage—Redis holds everything in RAM. ## HubSpot CRM Integration HubSpot offers a REST API and webhooks for real-time sync. Authentication uses private apps (access token) or OAuth for public apps. The CRM API covers contacts, companies, deals, and tickets. Use the Search API for complex queries. Webhook subscriptions require a valid endpoint that responds to verification challenges. ## Xero Accounting Integration Xero uses OAuth 2.0. The API base is https://api.xero.com/api.xro/2.0/. Endpoints include Invoices, Contacts, Payments, and BankTransactions. Connections are tenant-specific—multi-tenant apps must handle organization switching. Rate limits: 60 calls per minute per organization. ## PostgreSQL Best Practices Use connection pooling (PgBouncer) for web applications. Index foreign keys and frequently queried columns. Avoid N+1 queries—use JOINs or batch loading. For large tables, consider partitioning by date. Always use parameterized queries to prevent SQL injection. ## Redis Caching Patterns Use Redis for session storage, rate limiting, and cache-aside patterns. Set TTLs on cached data to prevent stale reads. Consider Redis Cluster for high availability. Monitor memory usage—Redis holds everything in RAM. ## HubSpot CRM Integration HubSpot offers a REST API and webhooks for real-time sync. Authentication uses private apps (access token) or OAuth for public apps. The CRM API covers contacts, companies, deals, and tickets. Use the Search API for complex queries. Webhook subscriptions require a valid endpoint that responds to verification challenges. ## Xero Accounting Integration Xero uses OAuth 2.0. The API base is https://api.xero.com/api.xro/2.0/. Endpoints include Invoices, Contacts, Payments, and BankTransactions. Connections are tenant-specific—multi-tenant apps must handle organization switching. Rate limits: 60 calls per minute per organization. ## PostgreSQL Best Practices Use connection pooling (PgBouncer) for web applications. Index foreign keys and frequently queried columns. Avoid N+1 queries—use JOINs or batch loading. For large tables, consider partitioning by date. Always use parameterized queries to prevent SQL injection. ## Redis Caching Patterns Use Redis for session storage, rate limiting, and cache-aside patterns. Set TTLs on cached data to prevent stale reads. Consider Redis Cluster for high availability. Monitor memory usage—Redis holds everything in RAM. ## HubSpot CRM Integration HubSpot offers a REST API and webhooks for real-time sync. Authentication uses private apps (access token) or OAuth for public apps. The CRM API covers contacts, companies, deals, and tickets. Use the Search API for complex queries. Webhook subscriptions require a valid endpoint that responds to verification challenges. ## Xero Accounting Integration Xero uses OAuth 2.0. The API base is https://api.xero.com/api.xro/2.0/. Endpoints include Invoices, Contacts, Payments, and BankTransactions. Connections are tenant-specific—multi-tenant apps must handle organization switching. Rate limits: 60 calls per minute per organization. ## PostgreSQL Best Practices Use connection pooling (PgBouncer) for web applications. Index foreign keys and frequently queried columns. Avoid N+1 queries—use JOINs or batch loading. For large tables, consider partitioning by date. Always use parameterized queries to prevent SQL injection. ## Redis Caching Patterns Use Redis for session storage, rate limiting, and cache-aside patterns. Set TTLs on cached data to prevent stale reads. Consider Redis Cluster for high availability. Monitor memory usage—Redis holds everything in RAM. ## HubSpot CRM Integration HubSpot offers a REST API and webhooks for real-time sync. Authentication uses private apps (access token) or OAuth for public apps. The CRM API covers contacts, companies, deals, and tickets. Use the Search API for complex queries. Webhook subscriptions require a valid endpoint that responds to verification challenges. ## Xero Accounting Integration Xero uses OAuth 2.0. The API base is https://api.xero.com/api.xro/2.0/. Endpoints include Invoices, Contacts, Payments, and BankTransactions. Connections are tenant-specific—multi-tenant apps must handle organization switching. Rate limits: 60 calls per minute per organization. ## PostgreSQL Best Practices Use connection pooling (PgBouncer) for web applications. Index foreign keys and frequently queried columns. Avoid N+1 queries—use JOINs or batch loading. For large tables, consider partitioning by date. Always use parameterized queries to prevent SQL injection. ## Redis Caching Patterns Use Redis for session storage, rate limiting, and cache-aside patterns. Set TTLs on cached data to prevent stale reads. Consider Redis Cluster for high availability. Monitor memory usage—Redis holds everything in RAM. ## HubSpot CRM Integration HubSpot offers a REST API and webhooks for real-time sync. Authentication uses private apps (access token) or OAuth for public apps. The CRM API covers contacts, companies, deals, and tickets. Use the Search API for complex queries. Webhook subscriptions require a valid endpoint that responds to verification challenges. ## Xero Accounting Integration Xero uses OAuth 2.0. The API base is https://api.xero.com/api.xro/2.0/. Endpoints include Invoices, Contacts, Payments, and BankTransactions. Connections are tenant-specific—multi-tenant apps must handle organization switching. Rate limits: 60 calls per minute per organization. ## PostgreSQL Best Practices Use connection pooling (PgBouncer) for web applications. Index foreign keys and frequently queried columns. Avoid N+1 queries—use JOINs or batch loading. For large tables, consider partitioning by date. Always use parameterized queries to prevent SQL injection. ## Redis Caching Patterns Use Redis for session storage, rate limiting, and cache-aside patterns. Set TTLs on cached data to prevent stale reads. Consider Redis Cluster for high availability. Monitor memory usage—Redis holds everything in RAM. ## HubSpot CRM Integration HubSpot offers a REST API and webhooks for real-time sync. Authentication uses private apps (access token) or OAuth for public apps. The CRM API covers contacts, companies, deals, and tickets. Use the Search API for complex queries. Webhook subscriptions require a valid endpoint that responds to verification challenges. ## Xero Accounting Integration Xero uses OAuth 2.0. The API base is https://api.xero.com/api.xro/2.0/. Endpoints include Invoices, Contacts, Payments, and BankTransactions. Connections are tenant-specific—multi-tenant apps must handle organization switching. Rate limits: 60 calls per minute per organization. ## PostgreSQL Best Practices Use connection pooling (PgBouncer) for web applications. Index foreign keys and frequently queried columns. Avoid N+1 queries—use JOINs or batch loading. For large tables, consider partitioning by date. Always use parameterized queries to prevent SQL injection. ## Redis Caching Patterns Use Redis for session storage, rate limiting, and cache-aside patterns. Set TTLs on cached data to prevent stale reads. Consider Redis Cluster for high availability. Monitor memory usage—Redis holds everything in RAM. ## HubSpot CRM Integration HubSpot offers a REST API and webhooks for real-time sync. Authentication uses private apps (access token) or OAuth for public apps. The CRM API covers contacts, companies, deals, and tickets. Use the Search API for complex queries. Webhook subscriptions require a valid endpoint that responds to verification challenges. ## Xero Accounting Integration Xero uses OAuth 2.0. The API base is https://api.xero.com/api.xro/2.0/. Endpoints include Invoices, Contacts, Payments, and BankTransactions. Connections are tenant-specific—multi-tenant apps must handle organization switching. Rate limits: 60 calls per minute per organization. ## PostgreSQL Best Practices Use connection pooling (PgBouncer) for web applications. Index foreign keys and frequently queried columns. Avoid N+1 queries—use JOINs or batch loading. For large tables, consider partitioning by date. Always use parameterized queries to prevent SQL injection. ## Redis Caching Patterns Use Redis for session storage, rate limiting, and cache-aside patterns. Set TTLs on cached data to prevent stale reads. Consider Redis Cluster for high availability. Monitor memory usage—Redis holds everything in RAM. ## HubSpot CRM Integration HubSpot offers a REST API and webhooks for real-time sync. Authentication uses private apps (access token) or OAuth for public apps. The CRM API covers contacts, companies, deals, and tickets. Use the Search API for complex queries. Webhook subscriptions require a valid endpoint that responds to verification challenges. ## Xero Accounting Integration Xero uses OAuth 2.0. The API base is https://api.xero.com/api.xro/2.0/. Endpoints include Invoices, Contacts, Payments, and BankTransactions. Connections are tenant-specific—multi-tenant apps must handle organization switching. Rate limits: 60 calls per minute per organization. ## PostgreSQL Best Practices Use connection pooling (PgBouncer) for web applications. Index foreign keys and frequently queried columns. Avoid N+1 queries—use JOINs or batch loading. For large tables, consider partitioning by date. Always use parameterized queries to prevent SQL injection. ## Redis Caching Patterns Use Redis for session storage, rate limiting, and cache-aside patterns. Set TTLs on cached data to prevent stale reads. Consider Redis Cluster for high availability. Monitor memory usage—Redis holds everything in RAM. ## HubSpot CRM Integration HubSpot offers a REST API and webhooks for real-time sync. Authentication uses private apps (access token) or OAuth for public apps. The CRM API covers contacts, companies, deals, and tickets. Use the Search API for complex queries. Webhook subscriptions require a valid endpoint that responds to verification challenges. ## Xero Accounting Integration Xero uses OAuth 2.0. The API base is https://api.xero.com/api.xro/2.0/. Endpoints include Invoices, Contacts, Payments, and BankTransactions. Connections are tenant-specific—multi-tenant apps must handle organization switching. Rate limits: 60 calls per minute per organization. ## PostgreSQL Best Practices Use connection pooling (PgBouncer) for web applications. Index foreign keys and frequently queried columns. Avoid N+1 queries—use JOINs or batch loading. For large tables, consider partitioning by date. Always use parameterized queries to prevent SQL injection. ## Redis Caching Patterns Use Redis for session storage, rate limiting, and cache-aside patterns. Set TTLs on cached data to prevent stale reads. Consider Redis Cluster for high availability. Monitor memory usage—Redis holds everything in RAM. ## HubSpot CRM Integration HubSpot offers a REST API and webhooks for real-time sync. Authentication uses private apps (access token) or OAuth for public apps. The CRM API covers contacts, companies, deals, and tickets. Use the Search API for complex queries. Webhook subscriptions require a valid endpoint that responds to verification challenges. ## Xero Accounting Integration Xero uses OAuth 2.0. The API base is https://api.xero.com/api.xro/2.0/. Endpoints include Invoices, Contacts, Payments, and BankTransactions. Connections are tenant-specific—multi-tenant apps must handle organization switching. Rate limits: 60 calls per minute per organization. ## PostgreSQL Best Practices Use connection pooling (PgBouncer) for web applications. Index foreign keys and frequently queried columns. Avoid N+1 queries—use JOINs or batch loading. For large tables, consider partitioning by date. Always use parameterized queries to prevent SQL injection. ## Redis Caching Patterns Use Redis for session storage, rate limiting, and cache-aside patterns. Set TTLs on cached data to prevent stale reads. Consider Redis Cluster for high availability. Monitor memory usage—Redis holds everything in RAM. ## HubSpot CRM Integration HubSpot offers a REST API and webhooks for real-time sync. Authentication uses private apps (access token) or OAuth for public apps. The CRM API covers contacts, companies, deals, and tickets. Use the Search API for complex queries. Webhook subscriptions require a valid endpoint that responds to verification challenges. ## Xero Accounting Integration Xero uses OAuth 2.0. The API base is https://api.xero.com/api.xro/2.0/. Endpoints include Invoices, Contacts, Payments, and BankTransactions. Connections are tenant-specific—multi-tenant apps must handle organization switching. Rate limits: 60 calls per minute per organization. ## PostgreSQL Best Practices Use connection pooling (PgBouncer) for web applications. Index foreign keys and frequently queried columns. Avoid N+1 queries—use JOINs or batch loading. For large tables, consider partitioning by date. Always use parameterized queries to prevent SQL injection. ## Redis Caching Patterns Use Redis for session storage, rate limiting, and cache-aside patterns. Set TTLs on cached data to prevent stale reads. Consider Redis Cluster for high availability. Monitor memory usage—Redis holds everything in RAM. ## HubSpot CRM Integration HubSpot offers a REST API and webhooks for real-time sync. Authentication uses private apps (access token) or OAuth for public apps. The CRM API covers contacts, companies, deals, and tickets. Use the Search API for complex queries. Webhook subscriptions require a valid endpoint that responds to verification challenges. ## Xero Accounting Integration Xero uses OAuth 2.0. The API base is https://api.xero.com/api.xro/2.0/. Endpoints include Invoices, Contacts, Payments, and BankTransactions. Connections are tenant-specific—multi-tenant apps must handle organization switching. Rate limits: 60 calls per minute per organization. ## PostgreSQL Best Practices Use connection pooling (PgBouncer) for web applications. Index foreign keys and frequently queried columns. Avoid N+1 queries—use JOINs or batch loading. For large tables, consider partitioning by date. Always use parameterized queries to prevent SQL injection. ## Redis Caching Patterns Use Redis for session storage, rate limiting, and cache-aside patterns. Set TTLs on cached data to prevent stale reads. Consider Redis Cluster for high availability. Monitor memory usage—Redis holds everything in RAM. ## HubSpot CRM Integration HubSpot offers a REST API and webhooks for real-time sync. Authentication uses private apps (access token) or OAuth for public apps. The CRM API covers contacts, companies, deals, and tickets. Use the Search API for complex queries. Webhook subscriptions require a valid endpoint that responds to verification challenges. ## Xero Accounting Integration Xero uses OAuth 2.0. The API base is https://api.xero.com/api.xro/2.0/. Endpoints include Invoices, Contacts, Payments, and BankTransactions. Connections are tenant-specific—multi-tenant apps must handle organization switching. Rate limits: 60 calls per minute per organization. ## PostgreSQL Best Practices Use connection pooling (PgBouncer) for web applications. Index foreign keys and frequently queried columns. Avoid N+1 queries—use JOINs or batch loading. For large tables, consider partitioning by date. Always use parameterized queries to prevent SQL injection. ## Redis Caching Patterns Use Redis for session storage, rate limiting, and cache-aside patterns. Set TTLs on cached data to prevent stale reads. Consider Redis Cluster for high availability. Monitor memory usage—Redis holds everything in RAM. ## HubSpot CRM Integration HubSpot offers a REST API and webhooks for real-time sync. Authentication uses private apps (access token) or OAuth for public apps. The CRM API covers contacts, companies, deals, and tickets. Use the Search API for complex queries. Webhook subscriptions require a valid endpoint that responds to verification challenges. ## Xero Accounting Integration Xero uses OAuth 2.0. The API base is https://api.xero.com/api.xro/2.0/. Endpoints include Invoices, Contacts, Payments, and BankTransactions. Connections are tenant-specific—multi-tenant apps must handle organization switching. Rate limits: 60 calls per minute per organization. ## PostgreSQL Best Practices Use connection pooling (PgBouncer) for web applications. Index foreign keys and frequently queried columns. Avoid N+1 queries—use JOINs or batch loading. For large tables, consider partitioning by date. Always use parameterized queries to prevent SQL injection. ## Redis Caching Patterns Use Redis for session storage, rate limiting, and cache-aside patterns. Set TTLs on cached data to prevent stale reads. Consider Redis Cluster for high availability. Monitor memory usage—Redis holds everything in RAM. ## HubSpot CRM Integration HubSpot offers a REST API and webhooks for real-time sync. Authentication uses private apps (access token) or OAuth for public apps. The CRM API covers contacts, companies, deals, and tickets. Use the Search API for complex queries. Webhook subscriptions require a valid endpoint that responds to verification challenges. ## Xero Accounting Integration Xero uses OAuth 2.0. The API base is https://api.xero.com/api.xro/2.0/. Endpoints include Invoices, Contacts, Payments, and BankTransactions. Connections are tenant-specific—multi-tenant apps must handle organization switching. Rate limits: 60 calls per minute per organization. ## PostgreSQL Best Practices Use connection pooling (PgBouncer) for web applications. Index foreign keys and frequently queried columns. Avoid N+1 queries—use JOINs or batch loading. For large tables, consider partitioning by date. Always use parameterized queries to prevent SQL injection. ## Redis Caching Patterns Use Redis for session storage, rate limiting, and cache-aside patterns. Set TTLs on cached data to prevent stale reads. Consider Redis Cluster for high availability. Monitor memory usage—Redis holds everything in RAM. ## HubSpot CRM Integration HubSpot offers a REST API and webhooks for real-time sync. Authentication uses private apps (access token) or OAuth for public apps. The CRM API covers contacts, companies, deals, and tickets. Use the Search API for complex queries. Webhook subscriptions require a valid endpoint that responds to verification challenges. ## Xero Accounting Integration Xero uses OAuth 2.0. The API base is https://api.xero.com/api.xro/2.0/. Endpoints include Invoices, Contacts, Payments, and BankTransactions. Connections are tenant-specific—multi-tenant apps must handle organization switching. Rate limits: 60 calls per minute per organization. ## PostgreSQL Best Practices Use connection pooling (PgBouncer) for web applications. Index foreign keys and frequently queried columns. Avoid N+1 queries—use JOINs or batch loading. For large tables, consider partitioning by date. Always use parameterized queries to prevent SQL injection. ## Redis Caching Patterns Use Redis for session storage, rate limiting, and cache-aside patterns. Set TTLs on cached data to prevent stale reads. Consider Redis Cluster for high availability. Monitor memory usage—Redis holds everything in RAM. ## HubSpot CRM Integration HubSpot offers a REST API and webhooks for real-time sync. Authentication uses private apps (access token) or OAuth for public apps. The CRM API covers contacts, companies, deals, and tickets. Use the Search API for complex queries. Webhook subscriptions require a valid endpoint that responds to verification challenges. ## Xero Accounting Integration Xero uses OAuth 2.0. The API base is https://api.xero.com/api.xro/2.0/. Endpoints include Invoices, Contacts, Payments, and BankTransactions. Connections are tenant-specific—multi-tenant apps must handle organization switching. Rate limits: 60 calls per minute per organization. ## PostgreSQL Best Practices Use connection pooling (PgBouncer) for web applications. Index foreign keys and frequently queried columns. Avoid N+1 queries—use JOINs or batch loading. For large tables, consider partitioning by date. Always use parameterized queries to prevent SQL injection. ## Redis Caching Patterns Use Redis for session storage, rate limiting, and cache-aside patterns. Set TTLs on cached data to prevent stale reads. Consider Redis Cluster for high availability. Monitor memory usage—Redis holds everything in RAM. ## HubSpot CRM Integration HubSpot offers a REST API and webhooks for real-time sync. Authentication uses private apps (access token) or OAuth for public apps. The CRM API covers contacts, companies, deals, and tickets. Use the Search API for complex queries. Webhook subscriptions require a valid endpoint that responds to verification challenges. ## Xero Accounting Integration Xero uses OAuth 2.0. The API base is https://api.xero.com/api.xro/2.0/. Endpoints include Invoices, Contacts, Payments, and BankTransactions. Connections are tenant-specific—multi-tenant apps must handle organization switching. Rate limits: 60 calls per minute per organization. ## PostgreSQL Best Practices Use connection pooling (PgBouncer) for web applications. Index foreign keys and frequently queried columns. Avoid N+1 queries—use JOINs or batch loading. For large tables, consider partitioning by date. Always use parameterized queries to prevent SQL injection. ## Redis Caching Patterns Use Redis for session storage, rate limiting, and cache-aside patterns. Set TTLs on cached data to prevent stale reads. Consider Redis Cluster for high availability. Monitor memory usage—Redis holds everything in RAM. ## HubSpot CRM Integration HubSpot offers a REST API and webhooks for real-time sync. Authentication uses private apps (access token) or OAuth for public apps. The CRM API covers contacts, companies, deals, and tickets. Use the Search API for complex queries. Webhook subscriptions require a valid endpoint that responds to verification challenges. ## Xero Accounting Integration Xero uses OAuth 2.0. The API base is https://api.xero.com/api.xro/2.0/. Endpoints include Invoices, Contacts, Payments, and BankTransactions. Connections are tenant-specific—multi-tenant apps must handle organization switching. Rate limits: 60 calls per minute per organization. ## PostgreSQL Best Practices Use connection pooling (PgBouncer) for web applications. Index foreign keys and frequently queried columns. Avoid N+1 queries—use JOINs or batch loading. For large tables, consider partitioning by date. Always use parameterized queries to prevent SQL injection. ## Redis Caching Patterns Use Redis for session storage, rate limiting, and cache-aside patterns. Set TTLs on cached data to prevent stale reads. Consider Redis Cluster for high availability. Monitor memory usage—Redis holds everything in RAM. ## HubSpot CRM Integration HubSpot offers a REST API and webhooks for real-time sync. Authentication uses private apps (access token) or OAuth for public apps. The CRM API covers contacts, companies, deals, and tickets. Use the Search API for complex queries. Webhook subscriptions require a valid endpoint that responds to verification challenges. ## Xero Accounting Integration Xero uses OAuth 2.0. The API base is https://api.xero.com/api.xro/2.0/. Endpoints include Invoices, Contacts, Payments, and BankTransactions. Connections are tenant-specific—multi-tenant apps must handle organization switching. Rate limits: 60 calls per minute per organization. ## PostgreSQL Best Practices Use connection pooling (PgBouncer) for web applications. Index foreign keys and frequently queried columns. Avoid N+1 queries—use JOINs or batch loading. For large tables, consider partitioning by date. Always use parameterized queries to prevent SQL injection. ## Redis Caching Patterns Use Redis for session storage, rate limiting, and cache-aside patterns. Set TTLs on cached data to prevent stale reads. Consider Redis Cluster for high availability. Monitor memory usage—Redis holds everything in RAM. ## HubSpot CRM Integration HubSpot offers a REST API and webhooks for real-time sync. Authentication uses private apps (access token) or OAuth for public apps. The CRM API covers contacts, companies, deals, and tickets. Use the Search API for complex queries. Webhook subscriptions require a valid endpoint that responds to verification challenges. ## Xero Accounting Integration Xero uses OAuth 2.0. The API base is https://api.xero.com/api.xro/2.0/. Endpoints include Invoices, Contacts, Payments, and BankTransactions. Connections are tenant-specific—multi-tenant apps must handle organization switching. Rate limits: 60 calls per minute per organization. ## PostgreSQL Best Practices Use connection pooling (PgBouncer) for web applications. Index foreign keys and frequently queried columns. Avoid N+1 queries—use JOINs or batch loading. For large tables, consider partitioning by date. Always use parameterized queries to prevent SQL injection. ## Redis Caching Patterns Use Redis for session storage, rate limiting, and cache-aside patterns. Set TTLs on cached data to prevent stale reads. Consider Redis Cluster for high availability. Monitor memory usage—Redis holds everything in RAM. ## HubSpot CRM Integration HubSpot offers a REST API and webhooks for real-time sync. Authentication uses private apps (access token) or OAuth for public apps. The CRM API covers contacts, companies, deals, and tickets. Use the Search API for complex queries. Webhook subscriptions require a valid endpoint that responds to verification challenges. ## Xero Accounting Integration Xero uses OAuth 2.0. The API base is https://api.xero.com/api.xro/2.0/. Endpoints include Invoices, Contacts, Payments, and BankTransactions. Connections are tenant-specific—multi-tenant apps must handle organization switching. Rate limits: 60 calls per minute per organization. ## PostgreSQL Best Practices Use connection pooling (PgBouncer) for web applications. Index foreign keys and frequently queried columns. Avoid N+1 queries—use JOINs or batch loading. For large tables, consider partitioning by date. Always use parameterized queries to prevent SQL injection. ## Redis Caching Patterns Use Redis for session storage, rate limiting, and cache-aside patterns. Set TTLs on cached data to prevent stale reads. Consider Redis Cluster for high availability. Monitor memory usage—Redis holds everything in RAM. ## HubSpot CRM Integration HubSpot offers a REST API and webhooks for real-time sync. Authentication uses private apps (access token) or OAuth for public apps. The CRM API covers contacts, companies, deals, and tickets. Use the Search API for complex queries. Webhook subscriptions require a valid endpoint that responds to verification challenges. ## Xero Accounting Integration Xero uses OAuth 2.0. The API base is https://api.xero.com/api.xro/2.0/. Endpoints include Invoices, Contacts, Payments, and BankTransactions. Connections are tenant-specific—multi-tenant apps must handle organization switching. Rate limits: 60 calls per minute per organization. ## PostgreSQL Best Practices Use connection pooling (PgBouncer) for web applications. Index foreign keys and frequently queried columns. Avoid N+1 queries—use JOINs or batch loading. For large tables, consider partitioning by date. Always use parameterized queries to prevent SQL injection. ## Redis Caching Patterns Use Redis for session storage, rate limiting, and cache-aside patterns. Set TTLs on cached data to prevent stale reads. Consider Redis Cluster for high availability. Monitor memory usage—Redis holds everything in RAM. ## HubSpot CRM Integration HubSpot offers a REST API and webhooks for real-time sync. Authentication uses private apps (access token) or OAuth for public apps. The CRM API covers contacts, companies, deals, and tickets. Use the Search API for complex queries. Webhook subscriptions require a valid endpoint that responds to verification challenges. ## Xero Accounting Integration Xero uses OAuth 2.0. The API base is https://api.xero.com/api.xro/2.0/. Endpoints include Invoices, Contacts, Payments, and BankTransactions. Connections are tenant-specific—multi-tenant apps must handle organization switching. Rate limits: 60 calls per minute per organization. ## PostgreSQL Best Practices Use connection pooling (PgBouncer) for web applications. Index foreign keys and frequently queried columns. Avoid N+1 queries—use JOINs or batch loading. For large tables, consider partitioning by date. Always use parameterized queries to prevent SQL injection. ## Redis Caching Patterns Use Redis for session storage, rate limiting, and cache-aside patterns. Set TTLs on cached data to prevent stale reads. Consider Redis Cluster for high availability. Monitor memory usage—Redis holds everything in RAM. ## HubSpot CRM Integration HubSpot offers a REST API and webhooks for real-time sync. Authentication uses private apps (access token) or OAuth for public apps. The CRM API covers contacts, companies, deals, and tickets. Use the Search API for complex queries. Webhook subscriptions require a valid endpoint that responds to verification challenges. ## Xero Accounting Integration Xero uses OAuth 2.0. The API base is https://api.xero.com/api.xro/2.0/. Endpoints include Invoices, Contacts, Payments, and BankTransactions. Connections are tenant-specific—multi-tenant apps must handle organization switching. Rate limits: 60 calls per minute per organization. ## PostgreSQL Best Practices Use connection pooling (PgBouncer) for web applications. Index foreign keys and frequently queried columns. Avoid N+1 queries—use JOINs or batch loading. For large tables, consider partitioning by date. Always use parameterized queries to prevent SQL injection. ## Redis Caching Patterns Use Redis for session storage, rate limiting, and cache-aside patterns. Set TTLs on cached data to prevent stale reads. Consider Redis Cluster for high availability. Monitor memory usage—Redis holds everything in RAM. ## HubSpot CRM Integration HubSpot offers a REST API and webhooks for real-time sync. Authentication uses private apps (access token) or OAuth for public apps. The CRM API covers contacts, companies, deals, and tickets. Use the Search API for complex queries. Webhook subscriptions require a valid endpoint that responds to verification challenges. ## Xero Accounting Integration Xero uses OAuth 2.0. The API base is https://api.xero.com/api.xro/2.0/. Endpoints include Invoices, Contacts, Payments, and BankTransactions. Connections are tenant-specific—multi-tenant apps must handle organization switching. Rate limits: 60 calls per minute per organization. ## PostgreSQL Best Practices Use connection pooling (PgBouncer) for web applications. Index foreign keys and frequently queried columns. Avoid N+1 queries—use JOINs or batch loading. For large tables, consider partitioning by date. Always use parameterized queries to prevent SQL injection. ## Redis Caching Patterns Use Redis for session storage, rate limiting, and cache-aside patterns. Set TTLs on cached data to prevent stale reads. Consider Redis Cluster for high availability. Monitor memory usage—Redis holds everything in RAM. ## HubSpot CRM Integration HubSpot offers a REST API and webhooks for real-time sync. Authentication uses private apps (access token) or OAuth for public apps. The CRM API covers contacts, companies, deals, and tickets. Use the Search API for complex queries. Webhook subscriptions require a valid endpoint that responds to verification challenges. ## Xero Accounting Integration Xero uses OAuth 2.0. The API base is https://api.xero.com/api.xro/2.0/. Endpoints include Invoices, Contacts, Payments, and BankTransactions. Connections are tenant-specific—multi-tenant apps must handle organization switching. Rate limits: 60 calls per minute per organization. ## PostgreSQL Best Practices Use connection pooling (PgBouncer) for web applications. Index foreign keys and frequently queried columns. Avoid N+1 queries—use JOINs or batch loading. For large tables, consider partitioning by date. Always use parameterized queries to prevent SQL injection. ## Redis Caching Patterns Use Redis for session storage, rate limiting, and cache-aside patterns. Set TTLs on cached data to prevent stale reads. Consider Redis Cluster for high availability. Monitor memory usage—Redis holds everything in RAM. ## HubSpot CRM Integration HubSpot offers a REST API and webhooks for real-time sync. Authentication uses private apps (access token) or OAuth for public apps. The CRM API covers contacts, companies, deals, and tickets. Use the Search API for complex queries. Webhook subscriptions require a valid endpoint that responds to verification challenges. ## Xero Accounting Integration Xero uses OAuth 2.0. The API base is https://api.xero.com/api.xro/2.0/. Endpoints include Invoices, Contacts, Payments, and BankTransactions. Connections are tenant-specific—multi-tenant apps must handle organization switching. Rate limits: 60 calls per minute per organization. ## PostgreSQL Best Practices Use connection pooling (PgBouncer) for web applications. Index foreign keys and frequently queried columns. Avoid N+1 queries—use JOINs or batch loading. For large tables, consider partitioning by date. Always use parameterized queries to prevent SQL injection. ## Redis Caching Patterns Use Redis for session storage, rate limiting, and cache-aside patterns. Set TTLs on cached data to prevent stale reads. Consider Redis Cluster for high availability. Monitor memory usage—Redis holds everything in RAM. ## HubSpot CRM Integration HubSpot offers a REST API and webhooks for real-time sync. Authentication uses private apps (access token) or OAuth for public apps. The CRM API covers contacts, companies, deals, and tickets. Use the Search API for complex queries. Webhook subscriptions require a valid endpoint that responds to verification challenges. ## Xero Accounting Integration Xero uses OAuth 2.0. The API base is https://api.xero.com/api.xro/2.0/. Endpoints include Invoices, Contacts, Payments, and BankTransactions. Connections are tenant-specific—multi-tenant apps must handle organization switching. Rate limits: 60 calls per minute per organization. ## PostgreSQL Best Practices Use connection pooling (PgBouncer) for web applications. Index foreign keys and frequently queried columns. Avoid N+1 queries—use JOINs or batch loading. For large tables, consider partitioning by date. Always use parameterized queries to prevent SQL injection. ## Redis Caching Patterns Use Redis for session storage, rate limiting, and cache-aside patterns. Set TTLs on cached data to prevent stale reads. Consider Redis Cluster for high availability. Monitor memory usage—Redis holds everything in RAM. ## HubSpot CRM Integration HubSpot offers a REST API and webhooks for real-time sync. Authentication uses private apps (access token) or OAuth for public apps. The CRM API covers contacts, companies, deals, and tickets. Use the Search API for complex queries. Webhook subscriptions require a valid endpoint that responds to verification challenges. ## Xero Accounting Integration Xero uses OAuth 2.0. The API base is https://api.xero.com/api.xro/2.0/. Endpoints include Invoices, Contacts, Payments, and BankTransactions. Connections are tenant-specific—multi-tenant apps must handle organization switching. Rate limits: 60 calls per minute per organization. ## PostgreSQL Best Practices Use connection pooling (PgBouncer) for web applications. Index foreign keys and frequently queried columns. Avoid N+1 queries—use JOINs or batch loading. For large tables, consider partitioning by date. Always use parameterized queries to prevent SQL injection. ## Redis Caching Patterns Use Redis for session storage, rate limiting, and cache-aside patterns. Set TTLs on cached data to prevent stale reads. Consider Redis Cluster for high availability. Monitor memory usage—Redis holds everything in RAM. ## HubSpot CRM Integration HubSpot offers a REST API and webhooks for real-time sync. Authentication uses private apps (access token) or OAuth for public apps. The CRM API covers contacts, companies, deals, and tickets. Use the Search API for complex queries. Webhook subscriptions require a valid endpoint that responds to verification challenges. ## Xero Accounting Integration Xero uses OAuth 2.0. The API base is https://api.xero.com/api.xro/2.0/. Endpoints include Invoices, Contacts, Payments, and BankTransactions. Connections are tenant-specific—multi-tenant apps must handle organization switching. Rate limits: 60 calls per minute per organization. ## PostgreSQL Best Practices Use connection pooling (PgBouncer) for web applications. Index foreign keys and frequently queried columns. Avoid N+1 queries—use JOINs or batch loading. For large tables, consider partitioning by date. Always use parameterized queries to prevent SQL injection. ## Redis Caching Patterns Use Redis for session storage, rate limiting, and cache-aside patterns. Set TTLs on cached data to prevent stale reads. Consider Redis Cluster for high availability. Monitor memory usage—Redis holds everything in RAM. ## HubSpot CRM Integration HubSpot offers a REST API and webhooks for real-time sync. Authentication uses private apps (access token) or OAuth for public apps. The CRM API covers contacts, companies, deals, and tickets. Use the Search API for complex queries. Webhook subscriptions require a valid endpoint that responds to verification challenges. ## Xero Accounting Integration Xero uses OAuth 2.0. The API base is https://api.xero.com/api.xro/2.0/. Endpoints include Invoices, Contacts, Payments, and BankTransactions. Connections are tenant-specific—multi-tenant apps must handle organization switching. Rate limits: 60 calls per minute per organization. ## PostgreSQL Best Practices Use connection pooling (PgBouncer) for web applications. Index foreign keys and frequently queried columns. Avoid N+1 queries—use JOINs or batch loading. For large tables, consider partitioning by date. Always use parameterized queries to prevent SQL injection. ## Redis Caching Patterns Use Redis for session storage, rate limiting, and cache-aside patterns. Set TTLs on cached data to prevent stale reads. Consider Redis Cluster for high availability. Monitor memory usage—Redis holds everything in RAM. ## HubSpot CRM Integration HubSpot offers a REST API and webhooks for real-time sync. Authentication uses private apps (access token) or OAuth for public apps. The CRM API covers contacts, companies, deals, and tickets. Use the Search API for complex queries. Webhook subscriptions require a valid endpoint that responds to verification challenges. ## Xero Accounting Integration Xero uses OAuth 2.0. The API base is https://api.xero.com/api.xro/2.0/. Endpoints include Invoices, Contacts, Payments, and BankTransactions. Connections are tenant-specific—multi-tenant apps must handle organization switching. Rate limits: 60 calls per minute per organization. ## PostgreSQL Best Practices Use connection pooling (PgBouncer) for web applications. Index foreign keys and frequently queried columns. Avoid N+1 queries—use JOINs or batch loading. For large tables, consider partitioning by date. Always use parameterized queries to prevent SQL injection. ## Redis Caching Patterns Use Redis for session storage, rate limiting, and cache-aside patterns. Set TTLs on cached data to prevent stale reads. Consider Redis Cluster for high availability. Monitor memory usage—Redis holds everything in RAM. ## HubSpot CRM Integration HubSpot offers a REST API and webhooks for real-time sync. Authentication uses private apps (access token) or OAuth for public apps. The CRM API covers contacts, companies, deals, and tickets. Use the Search API for complex queries. Webhook subscriptions require a valid endpoint that responds to verification challenges. ## Xero Accounting Integration Xero uses OAuth 2.0. The API base is https://api.xero.com/api.xro/2.0/. Endpoints include Invoices, Contacts, Payments, and BankTransactions. Connections are tenant-specific—multi-tenant apps must handle organization switching. Rate limits: 60 calls per minute per organization. ## PostgreSQL Best Practices Use connection pooling (PgBouncer) for web applications. Index foreign keys and frequently queried columns. Avoid N+1 queries—use JOINs or batch loading. For large tables, consider partitioning by date. Always use parameterized queries to prevent SQL injection. ## Redis Caching Patterns Use Redis for session storage, rate limiting, and cache-aside patterns. Set TTLs on cached data to prevent stale reads. Consider Redis Cluster for high availability. Monitor memory usage—Redis holds everything in RAM. ## HubSpot CRM Integration HubSpot offers a REST API and webhooks for real-time sync. Authentication uses private apps (access token) or OAuth for public apps. The CRM API covers contacts, companies, deals, and tickets. Use the Search API for complex queries. Webhook subscriptions require a valid endpoint that responds to verification challenges. ## Xero Accounting Integration Xero uses OAuth 2.0. The API base is https://api.xero.com/api.xro/2.0/. Endpoints include Invoices, Contacts, Payments, and BankTransactions. Connections are tenant-specific—multi-tenant apps must handle organization switching. Rate limits: 60 calls per minute per organization. ## PostgreSQL Best Practices Use connection pooling (PgBouncer) for web applications. Index foreign keys and frequently queried columns. Avoid N+1 queries—use JOINs or batch loading. For large tables, consider partitioning by date. Always use parameterized queries to prevent SQL injection. ## Redis Caching Patterns Use Redis for session storage, rate limiting, and cache-aside patterns. Set TTLs on cached data to prevent stale reads. Consider Redis Cluster for high availability. Monitor memory usage—Redis holds everything in RAM. ## HubSpot CRM Integration HubSpot offers a REST API and webhooks for real-time sync. Authentication uses private apps (access token) or OAuth for public apps. The CRM API covers contacts, companies, deals, and tickets. Use the Search API for complex queries. Webhook subscriptions require a valid endpoint that responds to verification challenges. ## Xero Accounting Integration Xero uses OAuth 2.0. The API base is https://api.xero.com/api.xro/2.0/. Endpoints include Invoices, Contacts, Payments, and BankTransactions. Connections are tenant-specific—multi-tenant apps must handle organization switching. Rate limits: 60 calls per minute per organization. ## PostgreSQL Best Practices Use connection pooling (PgBouncer) for web applications. Index foreign keys and frequently queried columns. Avoid N+1 queries—use JOINs or batch loading. For large tables, consider partitioning by date. Always use parameterized queries to prevent SQL injection. ## Redis Caching Patterns Use Redis for session storage, rate limiting, and cache-aside patterns. Set TTLs on cached data to prevent stale reads. Consider Redis Cluster for high availability. Monitor memory usage—Redis holds everything in RAM. ## HubSpot CRM Integration HubSpot offers a REST API and webhooks for real-time sync. Authentication uses private apps (access token) or OAuth for public apps. The CRM API covers contacts, companies, deals, and tickets. Use the Search API for complex queries. Webhook subscriptions require a valid endpoint that responds to verification challenges. ## Xero Accounting Integration Xero uses OAuth 2.0. The API base is https://api.xero.com/api.xro/2.0/. Endpoints include Invoices, Contacts, Payments, and BankTransactions. Connections are tenant-specific—multi-tenant apps must handle organization switching. Rate limits: 60 calls per minute per organization. ## PostgreSQL Best Practices Use connection pooling (PgBouncer) for web applications. Index foreign keys and frequently queried columns. Avoid N+1 queries—use JOINs or batch loading. For large tables, consider partitioning by date. Always use parameterized queries to prevent SQL injection. ## Redis Caching Patterns Use Redis for session storage, rate limiting, and cache-aside patterns. Set TTLs on cached data to prevent stale reads. Consider Redis Cluster for high availability. Monitor memory usage—Redis holds everything in RAM. ## HubSpot CRM Integration HubSpot offers a REST API and webhooks for real-time sync. Authentication uses private apps (access token) or OAuth for public apps. The CRM API covers contacts, companies, deals, and tickets. Use the Search API for complex queries. Webhook subscriptions require a valid endpoint that responds to verification challenges. ## Xero Accounting Integration Xero uses OAuth 2.0. The API base is https://api.xero.com/api.xro/2.0/. Endpoints include Invoices, Contacts, Payments, and BankTransactions. Connections are tenant-specific—multi-tenant apps must handle organization switching. Rate limits: 60 calls per minute per organization. ## PostgreSQL Best Practices Use connection pooling (PgBouncer) for web applications. Index foreign keys and frequently queried columns. Avoid N+1 queries—use JOINs or batch loading. For large tables, consider partitioning by date. Always use parameterized queries to prevent SQL injection. ## Redis Caching Patterns Use Redis for session storage, rate limiting, and cache-aside patterns. Set TTLs on cached data to prevent stale reads. Consider Redis Cluster for high availability. Monitor memory usage—Redis holds everything in RAM. ## HubSpot CRM Integration HubSpot offers a REST API and webhooks for real-time sync. Authentication uses private apps (access token) or OAuth for public apps. The CRM API covers contacts, companies, deals, and tickets. Use the Search API for complex queries. Webhook subscriptions require a valid endpoint that responds to verification challenges. ## Xero Accounting Integration Xero uses OAuth 2.0. The API base is https://api.xero.com/api.xro/2.0/. Endpoints include Invoices, Contacts, Payments, and BankTransactions. Connections are tenant-specific—multi-tenant apps must handle organization switching. Rate limits: 60 calls per minute per organization. ## PostgreSQL Best Practices Use connection pooling (PgBouncer) for web applications. Index foreign keys and frequently queried columns. Avoid N+1 queries—use JOINs or batch loading. For large tables, consider partitioning by date. Always use parameterized queries to prevent SQL injection. ## Redis Caching Patterns Use Redis for session storage, rate limiting, and cache-aside patterns. Set TTLs on cached data to prevent stale reads. Consider Redis Cluster for high availability. Monitor memory usage—Redis holds everything in RAM. ## HubSpot CRM Integration HubSpot offers a REST API and webhooks for real-time sync. Authentication uses private apps (access token) or OAuth for public apps. The CRM API covers contacts, companies, deals, and tickets. Use the Search API for complex queries. Webhook subscriptions require a valid endpoint that responds to verification challenges. ## Xero Accounting Integration Xero uses OAuth 2.0. The API base is https://api.xero.com/api.xro/2.0/. Endpoints include Invoices, Contacts, Payments, and BankTransactions. Connections are tenant-specific—multi-tenant apps must handle organization switching. Rate limits: 60 calls per minute per organization. ## PostgreSQL Best Practices Use connection pooling (PgBouncer) for web applications. Index foreign keys and frequently queried columns. Avoid N+1 queries—use JOINs or batch loading. For large tables, consider partitioning by date. Always use parameterized queries to prevent SQL injection. ## Redis Caching Patterns Use Redis for session storage, rate limiting, and cache-aside patterns. Set TTLs on cached data to prevent stale reads. Consider Redis Cluster for high availability. Monitor memory usage—Redis holds everything in RAM. ## HubSpot CRM Integration HubSpot offers a REST API and webhooks for real-time sync. Authentication uses private apps (access token) or OAuth for public apps. The CRM API covers contacts, companies, deals, and tickets. Use the Search API for complex queries. Webhook subscriptions require a valid endpoint that responds to verification challenges. ## Xero Accounting Integration Xero uses OAuth 2.0. The API base is https://api.xero.com/api.xro/2.0/. Endpoints include Invoices, Contacts, Payments, and BankTransactions. Connections are tenant-specific—multi-tenant apps must handle organization switching. Rate limits: 60 calls per minute per organization. ## PostgreSQL Best Practices Use connection pooling (PgBouncer) for web applications. Index foreign keys and frequently queried columns. Avoid N+1 queries—use JOINs or batch loading. For large tables, consider partitioning by date. Always use parameterized queries to prevent SQL injection. ## Redis Caching Patterns Use Redis for session storage, rate limiting, and cache-aside patterns. Set TTLs on cached data to prevent stale reads. Consider Redis Cluster for high availability. Monitor memory usage—Redis holds everything in RAM. ## HubSpot CRM Integration HubSpot offers a REST API and webhooks for real-time sync. Authentication uses private apps (access token) or OAuth for public apps. The CRM API covers contacts, companies, deals, and tickets. Use the Search API for complex queries. Webhook subscriptions require a valid endpoint that responds to verification challenges. ## Xero Accounting Integration Xero uses OAuth 2.0. The API base is https://api.xero.com/api.xro/2.0/. Endpoints include Invoices, Contacts, Payments, and BankTransactions. Connections are tenant-specific—multi-tenant apps must handle organization switching. Rate limits: 60 calls per minute per organization. ## PostgreSQL Best Practices Use connection pooling (PgBouncer) for web applications. Index foreign keys and frequently queried columns. Avoid N+1 queries—use JOINs or batch loading. For large tables, consider partitioning by date. Always use parameterized queries to prevent SQL injection. ## Redis Caching Patterns Use Redis for session storage, rate limiting, and cache-aside patterns. Set TTLs on cached data to prevent stale reads. Consider Redis Cluster for high availability. Monitor memory usage—Redis holds everything in RAM. ## HubSpot CRM Integration HubSpot offers a REST API and webhooks for real-time sync. Authentication uses private apps (access token) or OAuth for public apps. The CRM API covers contacts, companies, deals, and tickets. Use the Search API for complex queries. Webhook subscriptions require a valid endpoint that responds to verification challenges. ## Xero Accounting Integration Xero uses OAuth 2.0. The API base is https://api.xero.com/api.xro/2.0/. Endpoints include Invoices, Contacts, Payments, and BankTransactions. Connections are tenant-specific—multi-tenant apps must handle organization switching. Rate limits: 60 calls per minute per organization. ## PostgreSQL Best Practices Use connection pooling (PgBouncer) for web applications. Index foreign keys and frequently queried columns. Avoid N+1 queries—use JOINs or batch loading. For large tables, consider partitioning by date. Always use parameterized queries to prevent SQL injection. ## Redis Caching Patterns Use Redis for session storage, rate limiting, and cache-aside patterns. Set TTLs on cached data to prevent stale reads. Consider Redis Cluster for high availability. Monitor memory usage—Redis holds everything in RAM. ## HubSpot CRM Integration HubSpot offers a REST API and webhooks for real-time sync. Authentication uses private apps (access token) or OAuth for public apps. The CRM API covers contacts, companies, deals, and tickets. Use the Search API for complex queries. Webhook subscriptions require a valid endpoint that responds to verification challenges. ## Xero Accounting Integration Xero uses OAuth 2.0. The API base is https://api.xero.com/api.xro/2.0/. Endpoints include Invoices, Contacts, Payments, and BankTransactions. Connections are tenant-specific—multi-tenant apps must handle organization switching. Rate limits: 60 calls per minute per organization. ## PostgreSQL Best Practices Use connection pooling (PgBouncer) for web applications. Index foreign keys and frequently queried columns. Avoid N+1 queries—use JOINs or batch loading. For large tables, consider partitioning by date. Always use parameterized queries to prevent SQL injection. ## Redis Caching Patterns Use Redis for session storage, rate limiting, and cache-aside patterns. Set TTLs on cached data to prevent stale reads. Consider Redis Cluster for high availability. Monitor memory usage—Redis holds everything in RAM. ## HubSpot CRM Integration HubSpot offers a REST API and webhooks for real-time sync. Authentication uses private apps (access token) or OAuth for public apps. The CRM API covers contacts, companies, deals, and tickets. Use the Search API for complex queries. Webhook subscriptions require a valid endpoint that responds to verification challenges. ## Xero Accounting Integration Xero uses OAuth 2.0. The API base is https://api.xero.com/api.xro/2.0/. Endpoints include Invoices, Contacts, Payments, and BankTransactions. Connections are tenant-specific—multi-tenant apps must handle organization switching. Rate limits: 60 calls per minute per organization. ## PostgreSQL Best Practices Use connection pooling (PgBouncer) for web applications. Index foreign keys and frequently queried columns. Avoid N+1 queries—use JOINs or batch loading. For large tables, consider partitioning by date. Always use parameterized queries to prevent SQL injection. ## Redis Caching Patterns Use Redis for session storage, rate limiting, and cache-aside patterns. Set TTLs on cached data to prevent stale reads. Consider Redis Cluster for high availability. Monitor memory usage—Redis holds everything in RAM. ## HubSpot CRM Integration HubSpot offers a REST API and webhooks for real-time sync. Authentication uses private apps (access token) or OAuth for public apps. The CRM API covers contacts, companies, deals, and tickets. Use the Search API for complex queries. Webhook subscriptions require a valid endpoint that responds to verification challenges. ## Xero Accounting Integration Xero uses OAuth 2.0. The API base is https://api.xero.com/api.xro/2.0/. Endpoints include Invoices, Contacts, Payments, and BankTransactions. Connections are tenant-specific—multi-tenant apps must handle organization switching. Rate limits: 60 calls per minute per organization. ## PostgreSQL Best Practices Use connection pooling (PgBouncer) for web applications. Index foreign keys and frequently queried columns. Avoid N+1 queries—use JOINs or batch loading. For large tables, consider partitioning by date. Always use parameterized queries to prevent SQL injection. ## Redis Caching Patterns Use Redis for session storage, rate limiting, and cache-aside patterns. Set TTLs on cached data to prevent stale reads. Consider Redis Cluster for high availability. Monitor memory usage—Redis holds everything in RAM. ## HubSpot CRM Integration HubSpot offers a REST API and webhooks for real-time sync. Authentication uses private apps (access token) or OAuth for public apps. The CRM API covers contacts, companies, deals, and tickets. Use the Search API for complex queries. Webhook subscriptions require a valid endpoint that responds to verification challenges. ## Xero Accounting Integration Xero uses OAuth 2.0. The API base is https://api.xero.com/api.xro/2.0/. Endpoints include Invoices, Contacts, Payments, and BankTransactions. Connections are tenant-specific—multi-tenant apps must handle organization switching. Rate limits: 60 calls per minute per organization. ## PostgreSQL Best Practices Use connection pooling (PgBouncer) for web applications. Index foreign keys and frequently queried columns. Avoid N+1 queries—use JOINs or batch loading. For large tables, consider partitioning by date. Always use parameterized queries to prevent SQL injection. ## Redis Caching Patterns Use Redis for session storage, rate limiting, and cache-aside patterns. Set TTLs on cached data to prevent stale reads. Consider Redis Cluster for high availability. Monitor memory usage—Redis holds everything in RAM. ## HubSpot CRM Integration HubSpot offers a REST API and webhooks for real-time sync. Authentication uses private apps (access token) or OAuth for public apps. The CRM API covers contacts, companies, deals, and tickets. Use the Search API for complex queries. Webhook subscriptions require a valid endpoint that responds to verification challenges. ## Xero Accounting Integration Xero uses OAuth 2.0. The API base is https://api.xero.com/api.xro/2.0/. Endpoints include Invoices, Contacts, Payments, and BankTransactions. Connections are tenant-specific—multi-tenant apps must handle organization switching. Rate limits: 60 calls per minute per organization. ## PostgreSQL Best Practices Use connection pooling (PgBouncer) for web applications. Index foreign keys and frequently queried columns. Avoid N+1 queries—use JOINs or batch loading. For large tables, consider partitioning by date. Always use parameterized queries to prevent SQL injection. ## Redis Caching Patterns Use Redis for session storage, rate limiting, and cache-aside patterns. Set TTLs on cached data to prevent stale reads. Consider Redis Cluster for high availability. Monitor memory usage—Redis holds everything in RAM. ## HubSpot CRM Integration HubSpot offers a REST API and webhooks for real-time sync. Authentication uses private apps (access token) or OAuth for public apps. The CRM API covers contacts, companies, deals, and tickets. Use the Search API for complex queries. Webhook subscriptions require a valid endpoint that responds to verification challenges. ## Xero Accounting Integration Xero uses OAuth 2.0. The API base is https://api.xero.com/api.xro/2.0/. Endpoints include Invoices, Contacts, Payments, and BankTransactions. Connections are tenant-specific—multi-tenant apps must handle organization switching. Rate limits: 60 calls per minute per organization. ## PostgreSQL Best Practices Use connection pooling (PgBouncer) for web applications. Index foreign keys and frequently queried columns. Avoid N+1 queries—use JOINs or batch loading. For large tables, consider partitioning by date. Always use parameterized queries to prevent SQL injection. ## Redis Caching Patterns Use Redis for session storage, rate limiting, and cache-aside patterns. Set TTLs on cached data to prevent stale reads. Consider Redis Cluster for high availability. Monitor memory usage—Redis holds everything in RAM. ## HubSpot CRM Integration HubSpot offers a REST API and webhooks for real-time sync. Authentication uses private apps (access token) or OAuth for public apps. The CRM API covers contacts, companies, deals, and tickets. Use the Search API for complex queries. Webhook subscriptions require a valid endpoint that responds to verification challenges. ## Xero Accounting Integration Xero uses OAuth 2.0. The API base is https://api.xero.com/api.xro/2.0/. Endpoints include Invoices, Contacts, Payments, and BankTransactions. Connections are tenant-specific—multi-tenant apps must handle organization switching. Rate limits: 60 calls per minute per organization. ## PostgreSQL Best Practices Use connection pooling (PgBouncer) for web applications. Index foreign keys and frequently queried columns. Avoid N+1 queries—use JOINs or batch loading. For large tables, consider partitioning by date. Always use parameterized queries to prevent SQL injection. ## Redis Caching Patterns Use Redis for session storage, rate limiting, and cache-aside patterns. Set TTLs on cached data to prevent stale reads. Consider Redis Cluster for high availability. Monitor memory usage—Redis holds everything in RAM. ## HubSpot CRM Integration HubSpot offers a REST API and webhooks for real-time sync. Authentication uses private apps (access token) or OAuth for public apps. The CRM API covers contacts, companies, deals, and tickets. Use the Search API for complex queries. Webhook subscriptions require a valid endpoint that responds to verification challenges. ## Xero Accounting Integration Xero uses OAuth 2.0. The API base is https://api.xero.com/api.xro/2.0/. Endpoints include Invoices, Contacts, Payments, and BankTransactions. Connections are tenant-specific—multi-tenant apps must handle organization switching. Rate limits: 60 calls per minute per organization. ## PostgreSQL Best Practices Use connection pooling (PgBouncer) for web applications. Index foreign keys and frequently queried columns. Avoid N+1 queries—use JOINs or batch loading. For large tables, consider partitioning by date. Always use parameterized queries to prevent SQL injection. ## Redis Caching Patterns Use Redis for session storage, rate limiting, and cache-aside patterns. Set TTLs on cached data to prevent stale reads. Consider Redis Cluster for high availability. Monitor memory usage—Redis holds everything in RAM. ## HubSpot CRM Integration HubSpot offers a REST API and webhooks for real-time sync. Authentication uses private apps (access token) or OAuth for public apps. The CRM API covers contacts, companies, deals, and tickets. Use the Search API for complex queries. Webhook subscriptions require a valid endpoint that responds to verification challenges. ## Xero Accounting Integration Xero uses OAuth 2.0. The API base is https://api.xero.com/api.xro/2.0/. Endpoints include Invoices, Contacts, Payments, and BankTransactions. Connections are tenant-specific—multi-tenant apps must handle organization switching. Rate limits: 60 calls per minute per organization. ## PostgreSQL Best Practices Use connection pooling (PgBouncer) for web applications. Index foreign keys and frequently queried columns. Avoid N+1 queries—use JOINs or batch loading. For large tables, consider partitioning by date. Always use parameterized queries to prevent SQL injection. ## Redis Caching Patterns Use Redis for session storage, rate limiting, and cache-aside patterns. Set TTLs on cached data to prevent stale reads. Consider Redis Cluster for high availability. Monitor memory usage—Redis holds everything in RAM. ## HubSpot CRM Integration HubSpot offers a REST API and webhooks for real-time sync. Authentication uses private apps (access token) or OAuth for public apps. The CRM API covers contacts, companies, deals, and tickets. Use the Search API for complex queries. Webhook subscriptions require a valid endpoint that responds to verification challenges. ## Xero Accounting Integration Xero uses OAuth 2.0. The API base is https://api.xero.com/api.xro/2.0/. Endpoints include Invoices, Contacts, Payments, and BankTransactions. Connections are tenant-specific—multi-tenant apps must handle organization switching. Rate limits: 60 calls per minute per organization. ## PostgreSQL Best Practices Use connection pooling (PgBouncer) for web applications. Index foreign keys and frequently queried columns. Avoid N+1 queries—use JOINs or batch loading. For large tables, consider partitioning by date. Always use parameterized queries to prevent SQL injection. ## Redis Caching Patterns Use Redis for session storage, rate limiting, and cache-aside patterns. Set TTLs on cached data to prevent stale reads. Consider Redis Cluster for high availability. Monitor memory usage—Redis holds everything in RAM. ## HubSpot CRM Integration HubSpot offers a REST API and webhooks for real-time sync. Authentication uses private apps (access token) or OAuth for public apps. The CRM API covers contacts, companies, deals, and tickets. Use the Search API for complex queries. Webhook subscriptions require a valid endpoint that responds to verification challenges. ## Xero Accounting Integration Xero uses OAuth 2.0. The API base is https://api.xero.com/api.xro/2.0/. Endpoints include Invoices, Contacts, Payments, and BankTransactions. Connections are tenant-specific—multi-tenant apps must handle organization switching. Rate limits: 60 calls per minute per organization. ## PostgreSQL Best Practices Use connection pooling (PgBouncer) for web applications. Index foreign keys and frequently queried columns. Avoid N+1 queries—use JOINs or batch loading. For large tables, consider partitioning by date. Always use parameterized queries to prevent SQL injection. ## Redis Caching Patterns Use Redis for session storage, rate limiting, and cache-aside patterns. Set TTLs on cached data to prevent stale reads. Consider Redis Cluster for high availability. Monitor memory usage—Redis holds everything in RAM. ## HubSpot CRM Integration HubSpot offers a REST API and webhooks for real-time sync. Authentication uses private apps (access token) or OAuth for public apps. The CRM API covers contacts, companies, deals, and tickets. Use the Search API for complex queries. Webhook subscriptions require a valid endpoint that responds to verification challenges. ## Xero Accounting Integration Xero uses OAuth 2.0. The API base is https://api.xero.com/api.xro/2.0/. Endpoints include Invoices, Contacts, Payments, and BankTransactions. Connections are tenant-specific—multi-tenant apps must handle organization switching. Rate limits: 60 calls per minute per organization. ## PostgreSQL Best Practices Use connection pooling (PgBouncer) for web applications. Index foreign keys and frequently queried columns. Avoid N+1 queries—use JOINs or batch loading. For large tables, consider partitioning by date. Always use parameterized queries to prevent SQL injection. ## Redis Caching Patterns Use Redis for session storage, rate limiting, and cache-aside patterns. Set TTLs on cached data to prevent stale reads. Consider Redis Cluster for high availability. Monitor memory usage—Redis holds everything in RAM. ## HubSpot CRM Integration HubSpot offers a REST API and webhooks for real-time sync. Authentication uses private apps (access token) or OAuth for public apps. The CRM API covers contacts, companies, deals, and tickets. Use the Search API for complex queries. Webhook subscriptions require a valid endpoint that responds to verification challenges. ## Xero Accounting Integration Xero uses OAuth 2.0. The API base is https://api.xero.com/api.xro/2.0/. Endpoints include Invoices, Contacts, Payments, and BankTransactions. Connections are tenant-specific—multi-tenant apps must handle organization switching. Rate limits: 60 calls per minute per organization. ## PostgreSQL Best Practices Use connection pooling (PgBouncer) for web applications. Index foreign keys and frequently queried columns. Avoid N+1 queries—use JOINs or batch loading. For large tables, consider partitioning by date. Always use parameterized queries to prevent SQL injection. ## Redis Caching Patterns Use Redis for session storage, rate limiting, and cache-aside patterns. Set TTLs on cached data to prevent stale reads. Consider Redis Cluster for high availability. Monitor memory usage—Redis holds everything in RAM. ## HubSpot CRM Integration HubSpot offers a REST API and webhooks for real-time sync. Authentication uses private apps (access token) or OAuth for public apps. The CRM API covers contacts, companies, deals, and tickets. Use the Search API for complex queries. Webhook subscriptions require a valid endpoint that responds to verification challenges. ## Xero Accounting Integration Xero uses OAuth 2.0. The API base is https://api.xero.com/api.xro/2.0/. Endpoints include Invoices, Contacts, Payments, and BankTransactions. Connections are tenant-specific—multi-tenant apps must handle organization switching. Rate limits: 60 calls per minute per organization. ## PostgreSQL Best Practices Use connection pooling (PgBouncer) for web applications. Index foreign keys and frequently queried columns. Avoid N+1 queries—use JOINs or batch loading. For large tables, consider partitioning by date. Always use parameterized queries to prevent SQL injection. ## Redis Caching Patterns Use Redis for session storage, rate limiting, and cache-aside patterns. Set TTLs on cached data to prevent stale reads. Consider Redis Cluster for high availability. Monitor memory usage—Redis holds everything in RAM. ## HubSpot CRM Integration HubSpot offers a REST API and webhooks for real-time sync. Authentication uses private apps (access token) or OAuth for public apps. The CRM API covers contacts, companies, deals, and tickets. Use the Search API for complex queries. Webhook subscriptions require a valid endpoint that responds to verification challenges. ## Xero Accounting Integration Xero uses OAuth 2.0. The API base is https://api.xero.com/api.xro/2.0/. Endpoints include Invoices, Contacts, Payments, and BankTransactions. Connections are tenant-specific—multi-tenant apps must handle organization switching. Rate limits: 60 calls per minute per organization. ## PostgreSQL Best Practices Use connection pooling (PgBouncer) for web applications. Index foreign keys and frequently queried columns. Avoid N+1 queries—use JOINs or batch loading. For large tables, consider partitioning by date. Always use parameterized queries to prevent SQL injection. ## Redis Caching Patterns Use Redis for session storage, rate limiting, and cache-aside patterns. Set TTLs on cached data to prevent stale reads. Consider Redis Cluster for high availability. Monitor memory usage—Redis holds everything in RAM. ## HubSpot CRM Integration HubSpot offers a REST API and webhooks for real-time sync. Authentication uses private apps (access token) or OAuth for public apps. The CRM API covers contacts, companies, deals, and tickets. Use the Search API for complex queries. Webhook subscriptions require a valid endpoint that responds to verification challenges. ## Xero Accounting Integration Xero uses OAuth 2.0. The API base is https://api.xero.com/api.xro/2.0/. Endpoints include Invoices, Contacts, Payments, and BankTransactions. Connections are tenant-specific—multi-tenant apps must handle organization switching. Rate limits: 60 calls per minute per organization. ## PostgreSQL Best Practices Use connection pooling (PgBouncer) for web applications. Index foreign keys and frequently queried columns. Avoid N+1 queries—use JOINs or batch loading. For large tables, consider partitioning by date. Always use parameterized queries to prevent SQL injection. ## Redis Caching Patterns Use Redis for session storage, rate limiting, and cache-aside patterns. Set TTLs on cached data to prevent stale reads. Consider Redis Cluster for high availability. Monitor memory usage—Redis holds everything in RAM. ## HubSpot CRM Integration HubSpot offers a REST API and webhooks for real-time sync. Authentication uses private apps (access token) or OAuth for public apps. The CRM API covers contacts, companies, deals, and tickets. Use the Search API for complex queries. Webhook subscriptions require a valid endpoint that responds to verification challenges. ## Xero Accounting Integration Xero uses OAuth 2.0. The API base is https://api.xero.com/api.xro/2.0/. Endpoints include Invoices, Contacts, Payments, and BankTransactions. Connections are tenant-specific—multi-tenant apps must handle organization switching. Rate limits: 60 calls per minute per organization. ## PostgreSQL Best Practices Use connection pooling (PgBouncer) for web applications. Index foreign keys and frequently queried columns. Avoid N+1 queries—use JOINs or batch loading. For large tables, consider partitioning by date. Always use parameterized queries to prevent SQL injection. ## Redis Caching Patterns Use Redis for session storage, rate limiting, and cache-aside patterns. Set TTLs on cached data to prevent stale reads. Consider Redis Cluster for high availability. Monitor memory usage—Redis holds everything in RAM. ## HubSpot CRM Integration HubSpot offers a REST API and webhooks for real-time sync. Authentication uses private apps (access token) or OAuth for public apps. The CRM API covers contacts, companies, deals, and tickets. Use the Search API for complex queries. Webhook subscriptions require a valid endpoint that responds to verification challenges. ## Xero Accounting Integration Xero uses OAuth 2.0. The API base is https://api.xero.com/api.xro/2.0/. Endpoints include Invoices, Contacts, Payments, and BankTransactions. Connections are tenant-specific—multi-tenant apps must handle organization switching. Rate limits: 60 calls per minute per organization. ## PostgreSQL Best Practices Use connection pooling (PgBouncer) for web applications. Index foreign keys and frequently queried columns. Avoid N+1 queries—use JOINs or batch loading. For large tables, consider partitioning by date. Always use parameterized queries to prevent SQL injection. ## Redis Caching Patterns Use Redis for session storage, rate limiting, and cache-aside patterns. Set TTLs on cached data to prevent stale reads. Consider Redis Cluster for high availability. Monitor memory usage—Redis holds everything in RAM. ## HubSpot CRM Integration HubSpot offers a REST API and webhooks for real-time sync. Authentication uses private apps (access token) or OAuth for public apps. The CRM API covers contacts, companies, deals, and tickets. Use the Search API for complex queries. Webhook subscriptions require a valid endpoint that responds to verification challenges. ## Xero Accounting Integration Xero uses OAuth 2.0. The API base is https://api.xero.com/api.xro/2.0/. Endpoints include Invoices, Contacts, Payments, and BankTransactions. Connections are tenant-specific—multi-tenant apps must handle organization switching. Rate limits: 60 calls per minute per organization. ## PostgreSQL Best Practices Use connection pooling (PgBouncer) for web applications. Index foreign keys and frequently queried columns. Avoid N+1 queries—use JOINs or batch loading. For large tables, consider partitioning by date. Always use parameterized queries to prevent SQL injection. ## Redis Caching Patterns Use Redis for session storage, rate limiting, and cache-aside patterns. Set TTLs on cached data to prevent stale reads. Consider Redis Cluster for high availability. Monitor memory usage—Redis holds everything in RAM. ## HubSpot CRM Integration HubSpot offers a REST API and webhooks for real-time sync. Authentication uses private apps (access token) or OAuth for public apps. The CRM API covers contacts, companies, deals, and tickets. Use the Search API for complex queries. Webhook subscriptions require a valid endpoint that responds to verification challenges. ## Xero Accounting Integration Xero uses OAuth 2.0. The API base is https://api.xero.com/api.xro/2.0/. Endpoints include Invoices, Contacts, Payments, and BankTransactions. Connections are tenant-specific—multi-tenant apps must handle organization switching. Rate limits: 60 calls per minute per organization. ## PostgreSQL Best Practices Use connection pooling (PgBouncer) for web applications. Index foreign keys and frequently queried columns. Avoid N+1 queries—use JOINs or batch loading. For large tables, consider partitioning by date. Always use parameterized queries to prevent SQL injection. ## Redis Caching Patterns Use Redis for session storage, rate limiting, and cache-aside patterns. Set TTLs on cached data to prevent stale reads. Consider Redis Cluster for high availability. Monitor memory usage—Redis holds everything in RAM. ## HubSpot CRM Integration HubSpot offers a REST API and webhooks for real-time sync. Authentication uses private apps (access token) or OAuth for public apps. The CRM API covers contacts, companies, deals, and tickets. Use the Search API for complex queries. Webhook subscriptions require a valid endpoint that responds to verification challenges. ## Xero Accounting Integration Xero uses OAuth 2.0. The API base is https://api.xero.com/api.xro/2.0/. Endpoints include Invoices, Contacts, Payments, and BankTransactions. Connections are tenant-specific—multi-tenant apps must handle organization switching. Rate limits: 60 calls per minute per organization. ## PostgreSQL Best Practices Use connection pooling (PgBouncer) for web applications. Index foreign keys and frequently queried columns. Avoid N+1 queries—use JOINs or batch loading. For large tables, consider partitioning by date. Always use parameterized queries to prevent SQL injection. ## Redis Caching Patterns Use Redis for session storage, rate limiting, and cache-aside patterns. Set TTLs on cached data to prevent stale reads. Consider Redis Cluster for high availability. Monitor memory usage—Redis holds everything in RAM. ## HubSpot CRM Integration HubSpot offers a REST API and webhooks for real-time sync. Authentication uses private apps (access token) or OAuth for public apps. The CRM API covers contacts, companies, deals, and tickets. Use the Search API for complex queries. Webhook subscriptions require a valid endpoint that responds to verification challenges. ## Xero Accounting Integration Xero uses OAuth 2.0. The API base is https://api.xero.com/api.xro/2.0/. Endpoints include Invoices, Contacts, Payments, and BankTransactions. Connections are tenant-specific—multi-tenant apps must handle organization switching. Rate limits: 60 calls per minute per organization. ## PostgreSQL Best Practices Use connection pooling (PgBouncer) for web applications. Index foreign keys and frequently queried columns. Avoid N+1 queries—use JOINs or batch loading. For large tables, consider partitioning by date. Always use parameterized queries to prevent SQL injection. ## Redis Caching Patterns Use Redis for session storage, rate limiting, and cache-aside patterns. Set TTLs on cached data to prevent stale reads. Consider Redis Cluster for high availability. Monitor memory usage—Redis holds everything in RAM. ## HubSpot CRM Integration HubSpot offers a REST API and webhooks for real-time sync. Authentication uses private apps (access token) or OAuth for public apps. The CRM API covers contacts, companies, deals, and tickets. Use the Search API for complex queries. Webhook subscriptions require a valid endpoint that responds to verification challenges. ## Xero Accounting Integration Xero uses OAuth 2.0. The API base is https://api.xero.com/api.xro/2.0/. Endpoints include Invoices, Contacts, Payments, and BankTransactions. Connections are tenant-specific—multi-tenant apps must handle organization switching. Rate limits: 60 calls per minute per organization. ## PostgreSQL Best Practices Use connection pooling (PgBouncer) for web applications. Index foreign keys and frequently queried columns. Avoid N+1 queries—use JOINs or batch loading. For large tables, consider partitioning by date. Always use parameterized queries to prevent SQL injection. ## Redis Caching Patterns Use Redis for session storage, rate limiting, and cache-aside patterns. Set TTLs on cached data to prevent stale reads. Consider Redis Cluster for high availability. Monitor memory usage—Redis holds everything in RAM. ## HubSpot CRM Integration HubSpot offers a REST API and webhooks for real-time sync. Authentication uses private apps (access token) or OAuth for public apps. The CRM API covers contacts, companies, deals, and tickets. Use the Search API for complex queries. Webhook subscriptions require a valid endpoint that responds to verification challenges. ## Xero Accounting Integration Xero uses OAuth 2.0. The API base is https://api.xero.com/api.xro/2.0/. Endpoints include Invoices, Contacts, Payments, and BankTransactions. Connections are tenant-specific—multi-tenant apps must handle organization switching. Rate limits: 60 calls per minute per organization. ## PostgreSQL Best Practices Use connection pooling (PgBouncer) for web applications. Index foreign keys and frequently queried columns. Avoid N+1 queries—use JOINs or batch loading. For large tables, consider partitioning by date. Always use parameterized queries to prevent SQL injection. ## Redis Caching Patterns Use Redis for session storage, rate limiting, and cache-aside patterns. Set TTLs on cached data to prevent stale reads. Consider Redis Cluster for high availability. Monitor memory usage—Redis holds everything in RAM. ## HubSpot CRM Integration HubSpot offers a REST API and webhooks for real-time sync. Authentication uses private apps (access token) or OAuth for public apps. The CRM API covers contacts, companies, deals, and tickets. Use the Search API for complex queries. Webhook subscriptions require a valid endpoint that responds to verification challenges. ## Xero Accounting Integration Xero uses OAuth 2.0. The API base is https://api.xero.com/api.xro/2.0/. Endpoints include Invoices, Contacts, Payments, and BankTransactions. Connections are tenant-specific—multi-tenant apps must handle organization switching. Rate limits: 60 calls per minute per organization. ## PostgreSQL Best Practices Use connection pooling (PgBouncer) for web applications. Index foreign keys and frequently queried columns. Avoid N+1 queries—use JOINs or batch loading. For large tables, consider partitioning by date. Always use parameterized queries to prevent SQL injection. ## Redis Caching Patterns Use Redis for session storage, rate limiting, and cache-aside patterns. Set TTLs on cached data to prevent stale reads. Consider Redis Cluster for high availability. Monitor memory usage—Redis holds everything in RAM. ## HubSpot CRM Integration HubSpot offers a REST API and webhooks for real-time sync. Authentication uses private apps (access token) or OAuth for public apps. The CRM API covers contacts, companies, deals, and tickets. Use the Search API for complex queries. Webhook subscriptions require a valid endpoint that responds to verification challenges. ## Xero Accounting Integration Xero uses OAuth 2.0. The API base is https://api.xero.com/api.xro/2.0/. Endpoints include Invoices, Contacts, Payments, and BankTransactions. Connections are tenant-specific—multi-tenant apps must handle organization switching. Rate limits: 60 calls per minute per organization. ## PostgreSQL Best Practices Use connection pooling (PgBouncer) for web applications. Index foreign keys and frequently queried columns. Avoid N+1 queries—use JOINs or batch loading. For large tables, consider partitioning by date. Always use parameterized queries to prevent SQL injection. ## Redis Caching Patterns Use Redis for session storage, rate limiting, and cache-aside patterns. Set TTLs on cached data to prevent stale reads. Consider Redis Cluster for high availability. Monitor memory usage—Redis holds everything in RAM. ## HubSpot CRM Integration HubSpot offers a REST API and webhooks for real-time sync. Authentication uses private apps (access token) or OAuth for public apps. The CRM API covers contacts, companies, deals, and tickets. Use the Search API for complex queries. Webhook subscriptions require a valid endpoint that responds to verification challenges. ## Xero Accounting Integration Xero uses OAuth 2.0. The API base is https://api.xero.com/api.xro/2.0/. Endpoints include Invoices, Contacts, Payments, and BankTransactions. Connections are tenant-specific—multi-tenant apps must handle organization switching. Rate limits: 60 calls per minute per organization. ## PostgreSQL Best Practices Use connection pooling (PgBouncer) for web applications. Index foreign keys and frequently queried columns. Avoid N+1 queries—use JOINs or batch loading. For large tables, consider partitioning by date. Always use parameterized queries to prevent SQL injection. ## Redis Caching Patterns Use Redis for session storage, rate limiting, and cache-aside patterns. Set TTLs on cached data to prevent stale reads. Consider Redis Cluster for high availability. Monitor memory usage—Redis holds everything in RAM. ## HubSpot CRM Integration HubSpot offers a REST API and webhooks for real-time sync. Authentication uses private apps (access token) or OAuth for public apps. The CRM API covers contacts, companies, deals, and tickets. Use the Search API for complex queries. Webhook subscriptions require a valid endpoint that responds to verification challenges. ## Xero Accounting Integration Xero uses OAuth 2.0. The API base is https://api.xero.com/api.xro/2.0/. Endpoints include Invoices, Contacts, Payments, and BankTransactions. Connections are tenant-specific—multi-tenant apps must handle organization switching. Rate limits: 60 calls per minute per organization. ## PostgreSQL Best Practices Use connection pooling (PgBouncer) for web applications. Index foreign keys and frequently queried columns. Avoid N+1 queries—use JOINs or batch loading. For large tables, consider partitioning by date. Always use parameterized queries to prevent SQL injection. ## Redis Caching Patterns Use Redis for session storage, rate limiting, and cache-aside patterns. Set TTLs on cached data to prevent stale reads. Consider Redis Cluster for high availability. Monitor memory usage—Redis holds everything in RAM. ## HubSpot CRM Integration HubSpot offers a REST API and webhooks for real-time sync. Authentication uses private apps (access token) or OAuth for public apps. The CRM API covers contacts, companies, deals, and tickets. Use the Search API for complex queries. Webhook subscriptions require a valid endpoint that responds to verification challenges. ## Xero Accounting Integration Xero uses OAuth 2.0. The API base is https://api.xero.com/api.xro/2.0/. Endpoints include Invoices, Contacts, Payments, and BankTransactions. Connections are tenant-specific—multi-tenant apps must handle organization switching. Rate limits: 60 calls per minute per organization. ## PostgreSQL Best Practices Use connection pooling (PgBouncer) for web applications. Index foreign keys and frequently queried columns. Avoid N+1 queries—use JOINs or batch loading. For large tables, consider partitioning by date. Always use parameterized queries to prevent SQL injection. ## Redis Caching Patterns Use Redis for session storage, rate limiting, and cache-aside patterns. Set TTLs on cached data to prevent stale reads. Consider Redis Cluster for high availability. Monitor memory usage—Redis holds everything in RAM. ## HubSpot CRM Integration HubSpot offers a REST API and webhooks for real-time sync. Authentication uses private apps (access token) or OAuth for public apps. The CRM API covers contacts, companies, deals, and tickets. Use the Search API for complex queries. Webhook subscriptions require a valid endpoint that responds to verification challenges. ## Xero Accounting Integration Xero uses OAuth 2.0. The API base is https://api.xero.com/api.xro/2.0/. Endpoints include Invoices, Contacts, Payments, and BankTransactions. Connections are tenant-specific—multi-tenant apps must handle organization switching. Rate limits: 60 calls per minute per organization. ## PostgreSQL Best Practices Use connection pooling (PgBouncer) for web applications. Index foreign keys and frequently queried columns. Avoid N+1 queries—use JOINs or batch loading. For large tables, consider partitioning by date. Always use parameterized queries to prevent SQL injection. ## Redis Caching Patterns Use Redis for session storage, rate limiting, and cache-aside patterns. Set TTLs on cached data to prevent stale reads. Consider Redis Cluster for high availability. Monitor memory usage—Redis holds everything in RAM. ## HubSpot CRM Integration HubSpot offers a REST API and webhooks for real-time sync. Authentication uses private apps (access token) or OAuth for public apps. The CRM API covers contacts, companies, deals, and tickets. Use the Search API for complex queries. Webhook subscriptions require a valid endpoint that responds to verification challenges. ## Xero Accounting Integration Xero uses OAuth 2.0. The API base is https://api.xero.com/api.xro/2.0/. Endpoints include Invoices, Contacts, Payments, and BankTransactions. Connections are tenant-specific—multi-tenant apps must handle organization switching. Rate limits: 60 calls per minute per organization. ## PostgreSQL Best Practices Use connection pooling (PgBouncer) for web applications. Index foreign keys and frequently queried columns. Avoid N+1 queries—use JOINs or batch loading. For large tables, consider partitioning by date. Always use parameterized queries to prevent SQL injection. ## Redis Caching Patterns Use Redis for session storage, rate limiting, and cache-aside patterns. Set TTLs on cached data to prevent stale reads. Consider Redis Cluster for high availability. Monitor memory usage—Redis holds everything in RAM. ## HubSpot CRM Integration HubSpot offers a REST API and webhooks for real-time sync. Authentication uses private apps (access token) or OAuth for public apps. The CRM API covers contacts, companies, deals, and tickets. Use the Search API for complex queries. Webhook subscriptions require a valid endpoint that responds to verification challenges. ## Xero Accounting Integration Xero uses OAuth 2.0. The API base is https://api.xero.com/api.xro/2.0/. Endpoints include Invoices, Contacts, Payments, and BankTransactions. Connections are tenant-specific—multi-tenant apps must handle organization switching. Rate limits: 60 calls per minute per organization. ## PostgreSQL Best Practices Use connection pooling (PgBouncer) for web applications. Index foreign keys and frequently queried columns. Avoid N+1 queries—use JOINs or batch loading. For large tables, consider partitioning by date. Always use parameterized queries to prevent SQL injection. ## Redis Caching Patterns Use Redis for session storage, rate limiting, and cache-aside patterns. Set TTLs on cached data to prevent stale reads. Consider Redis Cluster for high availability. Monitor memory usage—Redis holds everything in RAM. ## HubSpot CRM Integration HubSpot offers a REST API and webhooks for real-time sync. Authentication uses private apps (access token) or OAuth for public apps. The CRM API covers contacts, companies, deals, and tickets. Use the Search API for complex queries. Webhook subscriptions require a valid endpoint that responds to verification challenges. ## Xero Accounting Integration Xero uses OAuth 2.0. The API base is https://api.xero.com/api.xro/2.0/. Endpoints include Invoices, Contacts, Payments, and BankTransactions. Connections are tenant-specific—multi-tenant apps must handle organization switching. Rate limits: 60 calls per minute per organization. ## PostgreSQL Best Practices Use connection pooling (PgBouncer) for web applications. Index foreign keys and frequently queried columns. Avoid N+1 queries—use JOINs or batch loading. For large tables, consider partitioning by date. Always use parameterized queries to prevent SQL injection. ## Redis Caching Patterns Use Redis for session storage, rate limiting, and cache-aside patterns. Set TTLs on cached data to prevent stale reads. Consider Redis Cluster for high availability. Monitor memory usage—Redis holds everything in RAM. ## HubSpot CRM Integration HubSpot offers a REST API and webhooks for real-time sync. Authentication uses private apps (access token) or OAuth for public apps. The CRM API covers contacts, companies, deals, and tickets. Use the Search API for complex queries. Webhook subscriptions require a valid endpoint that responds to verification challenges. ## Xero Accounting Integration Xero uses OAuth 2.0. The API base is https://api.xero.com/api.xro/2.0/. Endpoints include Invoices, Contacts, Payments, and BankTransactions. Connections are tenant-specific—multi-tenant apps must handle organization switching. Rate limits: 60 calls per minute per organization. ## PostgreSQL Best Practices Use connection pooling (PgBouncer) for web applications. Index foreign keys and frequently queried columns. Avoid N+1 queries—use JOINs or batch loading. For large tables, consider partitioning by date. Always use parameterized queries to prevent SQL injection. ## Redis Caching Patterns Use Redis for session storage, rate limiting, and cache-aside patterns. Set TTLs on cached data to prevent stale reads. Consider Redis Cluster for high availability. Monitor memory usage—Redis holds everything in RAM. ## HubSpot CRM Integration HubSpot offers a REST API and webhooks for real-time sync. Authentication uses private apps (access token) or OAuth for public apps. The CRM API covers contacts, companies, deals, and tickets. Use the Search API for complex queries. Webhook subscriptions require a valid endpoint that responds to verification challenges. ## Xero Accounting Integration Xero uses OAuth 2.0. The API base is https://api.xero.com/api.xro/2.0/. Endpoints include Invoices, Contacts, Payments, and BankTransactions. Connections are tenant-specific—multi-tenant apps must handle organization switching. Rate limits: 60 calls per minute per organization. ## PostgreSQL Best Practices Use connection pooling (PgBouncer) for web applications. Index foreign keys and frequently queried columns. Avoid N+1 queries—use JOINs or batch loading. For large tables, consider partitioning by date. Always use parameterized queries to prevent SQL injection. ## Redis Caching Patterns Use Redis for session storage, rate limiting, and cache-aside patterns. Set TTLs on cached data to prevent stale reads. Consider Redis Cluster for high availability. Monitor memory usage—Redis holds everything in RAM. ## HubSpot CRM Integration HubSpot offers a REST API and webhooks for real-time sync. Authentication uses private apps (access token) or OAuth for public apps. The CRM API covers contacts, companies, deals, and tickets. Use the Search API for complex queries. Webhook subscriptions require a valid endpoint that responds to verification challenges. ## Xero Accounting Integration Xero uses OAuth 2.0. The API base is https://api.xero.com/api.xro/2.0/. Endpoints include Invoices, Contacts, Payments, and BankTransactions. Connections are tenant-specific—multi-tenant apps must handle organization switching. Rate limits: 60 calls per minute per organization. ## PostgreSQL Best Practices Use connection pooling (PgBouncer) for web applications. Index foreign keys and frequently queried columns. Avoid N+1 queries—use JOINs or batch loading. For large tables, consider partitioning by date. Always use parameterized queries to prevent SQL injection. ## Redis Caching Patterns Use Redis for session storage, rate limiting, and cache-aside patterns. Set TTLs on cached data to prevent stale reads. Consider Redis Cluster for high availability. Monitor memory usage—Redis holds everything in RAM. ## HubSpot CRM Integration HubSpot offers a REST API and webhooks for real-time sync. Authentication uses private apps (access token) or OAuth for public apps. The CRM API covers contacts, companies, deals, and tickets. Use the Search API for complex queries. Webhook subscriptions require a valid endpoint that responds to verification challenges. ## Xero Accounting Integration Xero uses OAuth 2.0. The API base is https://api.xero.com/api.xro/2.0/. Endpoints include Invoices, Contacts, Payments, and BankTransactions. Connections are tenant-specific—multi-tenant apps must handle organization switching. Rate limits: 60 calls per minute per organization. ## PostgreSQL Best Practices Use connection pooling (PgBouncer) for web applications. Index foreign keys and frequently queried columns. Avoid N+1 queries—use JOINs or batch loading. For large tables, consider partitioning by date. Always use parameterized queries to prevent SQL injection. ## Redis Caching Patterns Use Redis for session storage, rate limiting, and cache-aside patterns. Set TTLs on cached data to prevent stale reads. Consider Redis Cluster for high availability. Monitor memory usage—Redis holds everything in RAM. ## HubSpot CRM Integration HubSpot offers a REST API and webhooks for real-time sync. Authentication uses private apps (access token) or OAuth for public apps. The CRM API covers contacts, companies, deals, and tickets. Use the Search API for complex queries. Webhook subscriptions require a valid endpoint that responds to verification challenges. ## Xero Accounting Integration Xero uses OAuth 2.0. The API base is https://api.xero.com/api.xro/2.0/. Endpoints include Invoices, Contacts, Payments, and BankTransactions. Connections are tenant-specific—multi-tenant apps must handle organization switching. Rate limits: 60 calls per minute per organization. ## PostgreSQL Best Practices Use connection pooling (PgBouncer) for web applications. Index foreign keys and frequently queried columns. Avoid N+1 queries—use JOINs or batch loading. For large tables, consider partitioning by date. Always use parameterized queries to prevent SQL injection. ## Redis Caching Patterns Use Redis for session storage, rate limiting, and cache-aside patterns. Set TTLs on cached data to prevent stale reads. Consider Redis Cluster for high availability. Monitor memory usage—Redis holds everything in RAM. ## HubSpot CRM Integration HubSpot offers a REST API and webhooks for real-time sync. Authentication uses private apps (access token) or OAuth for public apps. The CRM API covers contacts, companies, deals, and tickets. Use the Search API for complex queries. Webhook subscriptions require a valid endpoint that responds to verification challenges. ## Xero Accounting Integration Xero uses OAuth 2.0. The API base is https://api.xero.com/api.xro/2.0/. Endpoints include Invoices, Contacts, Payments, and BankTransactions. Connections are tenant-specific—multi-tenant apps must handle organization switching. Rate limits: 60 calls per minute per organization. ## PostgreSQL Best Practices Use connection pooling (PgBouncer) for web applications. Index foreign keys and frequently queried columns. Avoid N+1 queries—use JOINs or batch loading. For large tables, consider partitioning by date. Always use parameterized queries to prevent SQL injection. ## Redis Caching Patterns Use Redis for session storage, rate limiting, and cache-aside patterns. Set TTLs on cached data to prevent stale reads. Consider Redis Cluster for high availability. Monitor memory usage—Redis holds everything in RAM. ## HubSpot CRM Integration HubSpot offers a REST API and webhooks for real-time sync. Authentication uses private apps (access token) or OAuth for public apps. The CRM API covers contacts, companies, deals, and tickets. Use the Search API for complex queries. Webhook subscriptions require a valid endpoint that responds to verification challenges. ## Xero Accounting Integration Xero uses OAuth 2.0. The API base is https://api.xero.com/api.xro/2.0/. Endpoints include Invoices, Contacts, Payments, and BankTransactions. Connections are tenant-specific—multi-tenant apps must handle organization switching. Rate limits: 60 calls per minute per organization. ## PostgreSQL Best Practices Use connection pooling (PgBouncer) for web applications. Index foreign keys and frequently queried columns. Avoid N+1 queries—use JOINs or batch loading. For large tables, consider partitioning by date. Always use parameterized queries to prevent SQL injection. ## Redis Caching Patterns Use Redis for session storage, rate limiting, and cache-aside patterns. Set TTLs on cached data to prevent stale reads. Consider Redis Cluster for high availability. Monitor memory usage—Redis holds everything in RAM. ## HubSpot CRM Integration HubSpot offers a REST API and webhooks for real-time sync. Authentication uses private apps (access token) or OAuth for public apps. The CRM API covers contacts, companies, deals, and tickets. Use the Search API for complex queries. Webhook subscriptions require a valid endpoint that responds to verification challenges. ## Xero Accounting Integration Xero uses OAuth 2.0. The API base is https://api.xero.com/api.xro/2.0/. Endpoints include Invoices, Contacts, Payments, and BankTransactions. Connections are tenant-specific—multi-tenant apps must handle organization switching. Rate limits: 60 calls per minute per organization. ## PostgreSQL Best Practices Use connection pooling (PgBouncer) for web applications. Index foreign keys and frequently queried columns. Avoid N+1 queries—use JOINs or batch loading. For large tables, consider partitioning by date. Always use parameterized queries to prevent SQL injection. ## Redis Caching Patterns Use Redis for session storage, rate limiting, and cache-aside patterns. Set TTLs on cached data to prevent stale reads. Consider Redis Cluster for high availability. Monitor memory usage—Redis holds everything in RAM. ## HubSpot CRM Integration HubSpot offers a REST API and webhooks for real-time sync. Authentication uses private apps (access token) or OAuth for public apps. The CRM API covers contacts, companies, deals, and tickets. Use the Search API for complex queries. Webhook subscriptions require a valid endpoint that responds to verification challenges. ## Xero Accounting Integration Xero uses OAuth 2.0. The API base is https://api.xero.com/api.xro/2.0/. Endpoints include Invoices, Contacts, Payments, and BankTransactions. Connections are tenant-specific—multi-tenant apps must handle organization switching. Rate limits: 60 calls per minute per organization. ## PostgreSQL Best Practices Use connection pooling (PgBouncer) for web applications. Index foreign keys and frequently queried columns. Avoid N+1 queries—use JOINs or batch loading. For large tables, consider partitioning by date. Always use parameterized queries to prevent SQL injection. ## Redis Caching Patterns Use Redis for session storage, rate limiting, and cache-aside patterns. Set TTLs on cached data to prevent stale reads. Consider Redis Cluster for high availability. Monitor memory usage—Redis holds everything in RAM. ## HubSpot CRM Integration HubSpot offers a REST API and webhooks for real-time sync. Authentication uses private apps (access token) or OAuth for public apps. The CRM API covers contacts, companies, deals, and tickets. Use the Search API for complex queries. Webhook subscriptions require a valid endpoint that responds to verification challenges. ## Xero Accounting Integration Xero uses OAuth 2.0. The API base is https://api.xero.com/api.xro/2.0/. Endpoints include Invoices, Contacts, Payments, and BankTransactions. Connections are tenant-specific—multi-tenant apps must handle organization switching. Rate limits: 60 calls per minute per organization. ## PostgreSQL Best Practices Use connection pooling (PgBouncer) for web applications. Index foreign keys and frequently queried columns. Avoid N+1 queries—use JOINs or batch loading. For large tables, consider partitioning by date. Always use parameterized queries to prevent SQL injection. ## Redis Caching Patterns Use Redis for session storage, rate limiting, and cache-aside patterns. Set TTLs on cached data to prevent stale reads. Consider Redis Cluster for high availability. Monitor memory usage—Redis holds everything in RAM. ## HubSpot CRM Integration HubSpot offers a REST API and webhooks for real-time sync. Authentication uses private apps (access token) or OAuth for public apps. The CRM API covers contacts, companies, deals, and tickets. Use the Search API for complex queries. Webhook subscriptions require a valid endpoint that responds to verification challenges. ## Xero Accounting Integration Xero uses OAuth 2.0. The API base is https://api.xero.com/api.xro/2.0/. Endpoints include Invoices, Contacts, Payments, and BankTransactions. Connections are tenant-specific—multi-tenant apps must handle organization switching. Rate limits: 60 calls per minute per organization. ## PostgreSQL Best Practices Use connection pooling (PgBouncer) for web applications. Index foreign keys and frequently queried columns. Avoid N+1 queries—use JOINs or batch loading. For large tables, consider partitioning by date. Always use parameterized queries to prevent SQL injection. ## Redis Caching Patterns Use Redis for session storage, rate limiting, and cache-aside patterns. Set TTLs on cached data to prevent stale reads. Consider Redis Cluster for high availability. Monitor memory usage—Redis holds everything in RAM. ## HubSpot CRM Integration HubSpot offers a REST API and webhooks for real-time sync. Authentication uses private apps (access token) or OAuth for public apps. The CRM API covers contacts, companies, deals, and tickets. Use the Search API for complex queries. Webhook subscriptions require a valid endpoint that responds to verification challenges. ## Xero Accounting Integration Xero uses OAuth 2.0. The API base is https://api.xero.com/api.xro/2.0/. Endpoints include Invoices, Contacts, Payments, and BankTransactions. Connections are tenant-specific—multi-tenant apps must handle organization switching. Rate limits: 60 calls per minute per organization. ## PostgreSQL Best Practices Use connection pooling (PgBouncer) for web applications. Index foreign keys and frequently queried columns. Avoid N+1 queries—use JOINs or batch loading. For large tables, consider partitioning by date. Always use parameterized queries to prevent SQL injection. ## Redis Caching Patterns Use Redis for session storage, rate limiting, and cache-aside patterns. Set TTLs on cached data to prevent stale reads. Consider Redis Cluster for high availability. Monitor memory usage—Redis holds everything in RAM. ## HubSpot CRM Integration HubSpot offers a REST API and webhooks for real-time sync. Authentication uses private apps (access token) or OAuth for public apps. The CRM API covers contacts, companies, deals, and tickets. Use the Search API for complex queries. Webhook subscriptions require a valid endpoint that responds to verification challenges. ## Xero Accounting Integration Xero uses OAuth 2.0. The API base is https://api.xero.com/api.xro/2.0/. Endpoints include Invoices, Contacts, Payments, and BankTransactions. Connections are tenant-specific—multi-tenant apps must handle organization switching. Rate limits: 60 calls per minute per organization. ## PostgreSQL Best Practices Use connection pooling (PgBouncer) for web applications. Index foreign keys and frequently queried columns. Avoid N+1 queries—use JOINs or batch loading. For large tables, consider partitioning by date. Always use parameterized queries to prevent SQL injection. ## Redis Caching Patterns Use Redis for session storage, rate limiting, and cache-aside patterns. Set TTLs on cached data to prevent stale reads. Consider Redis Cluster for high availability. Monitor memory usage—Redis holds everything in RAM. ## HubSpot CRM Integration HubSpot offers a REST API and webhooks for real-time sync. Authentication uses private apps (access token) or OAuth for public apps. The CRM API covers contacts, companies, deals, and tickets. Use the Search API for complex queries. Webhook subscriptions require a valid endpoint that responds to verification challenges. ## Xero Accounting Integration Xero uses OAuth 2.0. The API base is https://api.xero.com/api.xro/2.0/. Endpoints include Invoices, Contacts, Payments, and BankTransactions. Connections are tenant-specific—multi-tenant apps must handle organization switching. Rate limits: 60 calls per minute per organization. ## PostgreSQL Best Practices Use connection pooling (PgBouncer) for web applications. Index foreign keys and frequently queried columns. Avoid N+1 queries—use JOINs or batch loading. For large tables, consider partitioning by date. Always use parameterized queries to prevent SQL injection. ## Redis Caching Patterns Use Redis for session storage, rate limiting, and cache-aside patterns. Set TTLs on cached data to prevent stale reads. Consider Redis Cluster for high availability. Monitor memory usage—Redis holds everything in RAM. ## HubSpot CRM Integration HubSpot offers a REST API and webhooks for real-time sync. Authentication uses private apps (access token) or OAuth for public apps. The CRM API covers contacts, companies, deals, and tickets. Use the Search API for complex queries. Webhook subscriptions require a valid endpoint that responds to verification challenges. ## Xero Accounting Integration Xero uses OAuth 2.0. The API base is https://api.xero.com/api.xro/2.0/. Endpoints include Invoices, Contacts, Payments, and BankTransactions. Connections are tenant-specific—multi-tenant apps must handle organization switching. Rate limits: 60 calls per minute per organization. ## PostgreSQL Best Practices Use connection pooling (PgBouncer) for web applications. Index foreign keys and frequently queried columns. Avoid N+1 queries—use JOINs or batch loading. For large tables, consider partitioning by date. Always use parameterized queries to prevent SQL injection. ## Redis Caching Patterns Use Redis for session storage, rate limiting, and cache-aside patterns. Set TTLs on cached data to prevent stale reads. Consider Redis Cluster for high availability. Monitor memory usage—Redis holds everything in RAM. ## HubSpot CRM Integration HubSpot offers a REST API and webhooks for real-time sync. Authentication uses private apps (access token) or OAuth for public apps. The CRM API covers contacts, companies, deals, and tickets. Use the Search API for complex queries. Webhook subscriptions require a valid endpoint that responds to verification challenges. ## Xero Accounting Integration Xero uses OAuth 2.0. The API base is https://api.xero.com/api.xro/2.0/. Endpoints include Invoices, Contacts, Payments, and BankTransactions. Connections are tenant-specific—multi-tenant apps must handle organization switching. Rate limits: 60 calls per minute per organization. ## PostgreSQL Best Practices Use connection pooling (PgBouncer) for web applications. Index foreign keys and frequently queried columns. Avoid N+1 queries—use JOINs or batch loading. For large tables, consider partitioning by date. Always use parameterized queries to prevent SQL injection. ## Redis Caching Patterns Use Redis for session storage, rate limiting, and cache-aside patterns. Set TTLs on cached data to prevent stale reads. Consider Redis Cluster for high availability. Monitor memory usage—Redis holds everything in RAM. ## HubSpot CRM Integration HubSpot offers a REST API and webhooks for real-time sync. Authentication uses private apps (access token) or OAuth for public apps. The CRM API covers contacts, companies, deals, and tickets. Use the Search API for complex queries. Webhook subscriptions require a valid endpoint that responds to verification challenges. ## Xero Accounting Integration Xero uses OAuth 2.0. The API base is https://api.xero.com/api.xro/2.0/. Endpoints include Invoices, Contacts, Payments, and BankTransactions. Connections are tenant-specific—multi-tenant apps must handle organization switching. Rate limits: 60 calls per minute per organization. ## PostgreSQL Best Practices Use connection pooling (PgBouncer) for web applications. Index foreign keys and frequently queried columns. Avoid N+1 queries—use JOINs or batch loading. For large tables, consider partitioning by date. Always use parameterized queries to prevent SQL injection. ## Redis Caching Patterns Use Redis for session storage, rate limiting, and cache-aside patterns. Set TTLs on cached data to prevent stale reads. Consider Redis Cluster for high availability. Monitor memory usage—Redis holds everything in RAM. ## HubSpot CRM Integration HubSpot offers a REST API and webhooks for real-time sync. Authentication uses private apps (access token) or OAuth for public apps. The CRM API covers contacts, companies, deals, and tickets. Use the Search API for complex queries. Webhook subscriptions require a valid endpoint that responds to verification challenges. ## Xero Accounting Integration Xero uses OAuth 2.0. The API base is https://api.xero.com/api.xro/2.0/. Endpoints include Invoices, Contacts, Payments, and BankTransactions. Connections are tenant-specific—multi-tenant apps must handle organization switching. Rate limits: 60 calls per minute per organization. ## PostgreSQL Best Practices Use connection pooling (PgBouncer) for web applications. Index foreign keys and frequently queried columns. Avoid N+1 queries—use JOINs or batch loading. For large tables, consider partitioning by date. Always use parameterized queries to prevent SQL injection. ## Redis Caching Patterns Use Redis for session storage, rate limiting, and cache-aside patterns. Set TTLs on cached data to prevent stale reads. Consider Redis Cluster for high availability. Monitor memory usage—Redis holds everything in RAM. ## HubSpot CRM Integration HubSpot offers a REST API and webhooks for real-time sync. Authentication uses private apps (access token) or OAuth for public apps. The CRM API covers contacts, companies, deals, and tickets. Use the Search API for complex queries. Webhook subscriptions require a valid endpoint that responds to verification challenges. ## Xero Accounting Integration Xero uses OAuth 2.0. The API base is https://api.xero.com/api.xro/2.0/. Endpoints include Invoices, Contacts, Payments, and BankTransactions. Connections are tenant-specific—multi-tenant apps must handle organization switching. Rate limits: 60 calls per minute per organization. ## PostgreSQL Best Practices Use connection pooling (PgBouncer) for web applications. Index foreign keys and frequently queried columns. Avoid N+1 queries—use JOINs or batch loading. For large tables, consider partitioning by date. Always use parameterized queries to prevent SQL injection. ## Redis Caching Patterns Use Redis for session storage, rate limiting, and cache-aside patterns. Set TTLs on cached data to prevent stale reads. Consider Redis Cluster for high availability. Monitor memory usage—Redis holds everything in RAM. ## HubSpot CRM Integration HubSpot offers a REST API and webhooks for real-time sync. Authentication uses private apps (access token) or OAuth for public apps. The CRM API covers contacts, companies, deals, and tickets. Use the Search API for complex queries. Webhook subscriptions require a valid endpoint that responds to verification challenges. ## Xero Accounting Integration Xero uses OAuth 2.0. The API base is https://api.xero.com/api.xro/2.0/. Endpoints include Invoices, Contacts, Payments, and BankTransactions. Connections are tenant-specific—multi-tenant apps must handle organization switching. Rate limits: 60 calls per minute per organization. ## PostgreSQL Best Practices Use connection pooling (PgBouncer) for web applications. Index foreign keys and frequently queried columns. Avoid N+1 queries—use JOINs or batch loading. For large tables, consider partitioning by date. Always use parameterized queries to prevent SQL injection. ## Redis Caching Patterns Use Redis for session storage, rate limiting, and cache-aside patterns. Set TTLs on cached data to prevent stale reads. Consider Redis Cluster for high availability. Monitor memory usage—Redis holds everything in RAM. ## HubSpot CRM Integration HubSpot offers a REST API and webhooks for real-time sync. Authentication uses private apps (access token) or OAuth for public apps. The CRM API covers contacts, companies, deals, and tickets. Use the Search API for complex queries. Webhook subscriptions require a valid endpoint that responds to verification challenges. ## Xero Accounting Integration Xero uses OAuth 2.0. The API base is https://api.xero.com/api.xro/2.0/. Endpoints include Invoices, Contacts, Payments, and BankTransactions. Connections are tenant-specific—multi-tenant apps must handle organization switching. Rate limits: 60 calls per minute per organization. ## PostgreSQL Best Practices Use connection pooling (PgBouncer) for web applications. Index foreign keys and frequently queried columns. Avoid N+1 queries—use JOINs or batch loading. For large tables, consider partitioning by date. Always use parameterized queries to prevent SQL injection. ## Redis Caching Patterns Use Redis for session storage, rate limiting, and cache-aside patterns. Set TTLs on cached data to prevent stale reads. Consider Redis Cluster for high availability. Monitor memory usage—Redis holds everything in RAM. ## HubSpot CRM Integration HubSpot offers a REST API and webhooks for real-time sync. Authentication uses private apps (access token) or OAuth for public apps. The CRM API covers contacts, companies, deals, and tickets. Use the Search API for complex queries. Webhook subscriptions require a valid endpoint that responds to verification challenges. ## Xero Accounting Integration Xero uses OAuth 2.0. The API base is https://api.xero.com/api.xro/2.0/. Endpoints include Invoices, Contacts, Payments, and BankTransactions. Connections are tenant-specific—multi-tenant apps must handle organization switching. Rate limits: 60 calls per minute per organization. ## PostgreSQL Best Practices Use connection pooling (PgBouncer) for web applications. Index foreign keys and frequently queried columns. Avoid N+1 queries—use JOINs or batch loading. For large tables, consider partitioning by date. Always use parameterized queries to prevent SQL injection. ## Redis Caching Patterns Use Redis for session storage, rate limiting, and cache-aside patterns. Set TTLs on cached data to prevent stale reads. Consider Redis Cluster for high availability. Monitor memory usage—Redis holds everything in RAM. ## HubSpot CRM Integration HubSpot offers a REST API and webhooks for real-time sync. Authentication uses private apps (access token) or OAuth for public apps. The CRM API covers contacts, companies, deals, and tickets. Use the Search API for complex queries. Webhook subscriptions require a valid endpoint that responds to verification challenges. ## Xero Accounting Integration Xero uses OAuth 2.0. The API base is https://api.xero.com/api.xro/2.0/. Endpoints include Invoices, Contacts, Payments, and BankTransactions. Connections are tenant-specific—multi-tenant apps must handle organization switching. Rate limits: 60 calls per minute per organization. ## PostgreSQL Best Practices Use connection pooling (PgBouncer) for web applications. Index foreign keys and frequently queried columns. Avoid N+1 queries—use JOINs or batch loading. For large tables, consider partitioning by date. Always use parameterized queries to prevent SQL injection. ## Redis Caching Patterns Use Redis for session storage, rate limiting, and cache-aside patterns. Set TTLs on cached data to prevent stale reads. Consider Redis Cluster for high availability. Monitor memory usage—Redis holds everything in RAM. ## HubSpot CRM Integration HubSpot offers a REST API and webhooks for real-time sync. Authentication uses private apps (access token) or OAuth for public apps. The CRM API covers contacts, companies, deals, and tickets. Use the Search API for complex queries. Webhook subscriptions require a valid endpoint that responds to verification challenges. ## Xero Accounting Integration Xero uses OAuth 2.0. The API base is https://api.xero.com/api.xro/2.0/. Endpoints include Invoices, Contacts, Payments, and BankTransactions. Connections are tenant-specific—multi-tenant apps must handle organization switching. Rate limits: 60 calls per minute per organization. ## PostgreSQL Best Practices Use connection pooling (PgBouncer) for web applications. Index foreign keys and frequently queried columns. Avoid N+1 queries—use JOINs or batch loading. For large tables, consider partitioning by date. Always use parameterized queries to prevent SQL injection. ## Redis Caching Patterns Use Redis for session storage, rate limiting, and cache-aside patterns. Set TTLs on cached data to prevent stale reads. Consider Redis Cluster for high availability. Monitor memory usage—Redis holds everything in RAM. ## HubSpot CRM Integration HubSpot offers a REST API and webhooks for real-time sync. Authentication uses private apps (access token) or OAuth for public apps. The CRM API covers contacts, companies, deals, and tickets. Use the Search API for complex queries. Webhook subscriptions require a valid endpoint that responds to verification challenges. ## Xero Accounting Integration Xero uses OAuth 2.0. The API base is https://api.xero.com/api.xro/2.0/. Endpoints include Invoices, Contacts, Payments, and BankTransactions. Connections are tenant-specific—multi-tenant apps must handle organization switching. Rate limits: 60 calls per minute per organization. ## PostgreSQL Best Practices Use connection pooling (PgBouncer) for web applications. Index foreign keys and frequently queried columns. Avoid N+1 queries—use JOINs or batch loading. For large tables, consider partitioning by date. Always use parameterized queries to prevent SQL injection. ## Redis Caching Patterns Use Redis for session storage, rate limiting, and cache-aside patterns. Set TTLs on cached data to prevent stale reads. Consider Redis Cluster for high availability. Monitor memory usage—Redis holds everything in RAM. ## HubSpot CRM Integration HubSpot offers a REST API and webhooks for real-time sync. Authentication uses private apps (access token) or OAuth for public apps. The CRM API covers contacts, companies, deals, and tickets. Use the Search API for complex queries. Webhook subscriptions require a valid endpoint that responds to verification challenges. ## Xero Accounting Integration Xero uses OAuth 2.0. The API base is https://api.xero.com/api.xro/2.0/. Endpoints include Invoices, Contacts, Payments, and BankTransactions. Connections are tenant-specific—multi-tenant apps must handle organization switching. Rate limits: 60 calls per minute per organization. ## PostgreSQL Best Practices Use connection pooling (PgBouncer) for web applications. Index foreign keys and frequently queried columns. Avoid N+1 queries—use JOINs or batch loading. For large tables, consider partitioning by date. Always use parameterized queries to prevent SQL injection. ## Redis Caching Patterns Use Redis for session storage, rate limiting, and cache-aside patterns. Set TTLs on cached data to prevent stale reads. Consider Redis Cluster for high availability. Monitor memory usage—Redis holds everything in RAM. ## HubSpot CRM Integration HubSpot offers a REST API and webhooks for real-time sync. Authentication uses private apps (access token) or OAuth for public apps. The CRM API covers contacts, companies, deals, and tickets. Use the Search API for complex queries. Webhook subscriptions require a valid endpoint that responds to verification challenges. ## Xero Accounting Integration Xero uses OAuth 2.0. The API base is https://api.xero.com/api.xro/2.0/. Endpoints include Invoices, Contacts, Payments, and BankTransactions. Connections are tenant-specific—multi-tenant apps must handle organization switching. Rate limits: 60 calls per minute per organization. ## PostgreSQL Best Practices Use connection pooling (PgBouncer) for web applications. Index foreign keys and frequently queried columns. Avoid N+1 queries—use JOINs or batch loading. For large tables, consider partitioning by date. Always use parameterized queries to prevent SQL injection. ## Redis Caching Patterns Use Redis for session storage, rate limiting, and cache-aside patterns. Set TTLs on cached data to prevent stale reads. Consider Redis Cluster for high availability. Monitor memory usage—Redis holds everything in RAM. ## HubSpot CRM Integration HubSpot offers a REST API and webhooks for real-time sync. Authentication uses private apps (access token) or OAuth for public apps. The CRM API covers contacts, companies, deals, and tickets. Use the Search API for complex queries. Webhook subscriptions require a valid endpoint that responds to verification challenges. ## Xero Accounting Integration Xero uses OAuth 2.0. The API base is https://api.xero.com/api.xro/2.0/. Endpoints include Invoices, Contacts, Payments, and BankTransactions. Connections are tenant-specific—multi-tenant apps must handle organization switching. Rate limits: 60 calls per minute per organization. ## PostgreSQL Best Practices Use connection pooling (PgBouncer) for web applications. Index foreign keys and frequently queried columns. Avoid N+1 queries—use JOINs or batch loading. For large tables, consider partitioning by date. Always use parameterized queries to prevent SQL injection. ## Redis Caching Patterns Use Redis for session storage, rate limiting, and cache-aside patterns. Set TTLs on cached data to prevent stale reads. Consider Redis Cluster for high availability. Monitor memory usage—Redis holds everything in RAM. ## HubSpot CRM Integration HubSpot offers a REST API and webhooks for real-time sync. Authentication uses private apps (access token) or OAuth for public apps. The CRM API covers contacts, companies, deals, and tickets. Use the Search API for complex queries. Webhook subscriptions require a valid endpoint that responds to verification challenges. ## Xero Accounting Integration Xero uses OAuth 2.0. The API base is https://api.xero.com/api.xro/2.0/. Endpoints include Invoices, Contacts, Payments, and BankTransactions. Connections are tenant-specific—multi-tenant apps must handle organization switching. Rate limits: 60 calls per minute per organization. ## PostgreSQL Best Practices Use connection pooling (PgBouncer) for web applications. Index foreign keys and frequently queried columns. Avoid N+1 queries—use JOINs or batch loading. For large tables, consider partitioning by date. Always use parameterized queries to prevent SQL injection. ## Redis Caching Patterns Use Redis for session storage, rate limiting, and cache-aside patterns. Set TTLs on cached data to prevent stale reads. Consider Redis Cluster for high availability. Monitor memory usage—Redis holds everything in RAM. ## HubSpot CRM Integration HubSpot offers a REST API and webhooks for real-time sync. Authentication uses private apps (access token) or OAuth for public apps. The CRM API covers contacts, companies, deals, and tickets. Use the Search API for complex queries. Webhook subscriptions require a valid endpoint that responds to verification challenges. ## Xero Accounting Integration Xero uses OAuth 2.0. The API base is https://api.xero.com/api.xro/2.0/. Endpoints include Invoices, Contacts, Payments, and BankTransactions. Connections are tenant-specific—multi-tenant apps must handle organization switching. Rate limits: 60 calls per minute per organization. ## PostgreSQL Best Practices Use connection pooling (PgBouncer) for web applications. Index foreign keys and frequently queried columns. Avoid N+1 queries—use JOINs or batch loading. For large tables, consider partitioning by date. Always use parameterized queries to prevent SQL injection. ## Redis Caching Patterns Use Redis for session storage, rate limiting, and cache-aside patterns. Set TTLs on cached data to prevent stale reads. Consider Redis Cluster for high availability. Monitor memory usage—Redis holds everything in RAM. ## HubSpot CRM Integration HubSpot offers a REST API and webhooks for real-time sync. Authentication uses private apps (access token) or OAuth for public apps. The CRM API covers contacts, companies, deals, and tickets. Use the Search API for complex queries. Webhook subscriptions require a valid endpoint that responds to verification challenges. ## Xero Accounting Integration Xero uses OAuth 2.0. The API base is https://api.xero.com/api.xro/2.0/. Endpoints include Invoices, Contacts, Payments, and BankTransactions. Connections are tenant-specific—multi-tenant apps must handle organization switching. Rate limits: 60 calls per minute per organization. ## PostgreSQL Best Practices Use connection pooling (PgBouncer) for web applications. Index foreign keys and frequently queried columns. Avoid N+1 queries—use JOINs or batch loading. For large tables, consider partitioning by date. Always use parameterized queries to prevent SQL injection. ## Redis Caching Patterns Use Redis for session storage, rate limiting, and cache-aside patterns. Set TTLs on cached data to prevent stale reads. Consider Redis Cluster for high availability. Monitor memory usage—Redis holds everything in RAM. ## HubSpot CRM Integration HubSpot offers a REST API and webhooks for real-time sync. Authentication uses private apps (access token) or OAuth for public apps. The CRM API covers contacts, companies, deals, and tickets. Use the Search API for complex queries. Webhook subscriptions require a valid endpoint that responds to verification challenges. ## Xero Accounting Integration Xero uses OAuth 2.0. The API base is https://api.xero.com/api.xro/2.0/. Endpoints include Invoices, Contacts, Payments, and BankTransactions. Connections are tenant-specific—multi-tenant apps must handle organization switching. Rate limits: 60 calls per minute per organization. ## PostgreSQL Best Practices Use connection pooling (PgBouncer) for web applications. Index foreign keys and frequently queried columns. Avoid N+1 queries—use JOINs or batch loading. For large tables, consider partitioning by date. Always use parameterized queries to prevent SQL injection. ## Redis Caching Patterns Use Redis for session storage, rate limiting, and cache-aside patterns. Set TTLs on cached data to prevent stale reads. Consider Redis Cluster for high availability. Monitor memory usage—Redis holds everything in RAM. ## HubSpot CRM Integration HubSpot offers a REST API and webhooks for real-time sync. Authentication uses private apps (access token) or OAuth for public apps. The CRM API covers contacts, companies, deals, and tickets. Use the Search API for complex queries. Webhook subscriptions require a valid endpoint that responds to verification challenges. ## Xero Accounting Integration Xero uses OAuth 2.0. The API base is https://api.xero.com/api.xro/2.0/. Endpoints include Invoices, Contacts, Payments, and BankTransactions. Connections are tenant-specific—multi-tenant apps must handle organization switching. Rate limits: 60 calls per minute per organization. ## PostgreSQL Best Practices Use connection pooling (PgBouncer) for web applications. Index foreign keys and frequently queried columns. Avoid N+1 queries—use JOINs or batch loading. For large tables, consider partitioning by date. Always use parameterized queries to prevent SQL injection. ## Redis Caching Patterns Use Redis for session storage, rate limiting, and cache-aside patterns. Set TTLs on cached data to prevent stale reads. Consider Redis Cluster for high availability. Monitor memory usage—Redis holds everything in RAM. ## HubSpot CRM Integration HubSpot offers a REST API and webhooks for real-time sync. Authentication uses private apps (access token) or OAuth for public apps. The CRM API covers contacts, companies, deals, and tickets. Use the Search API for complex queries. Webhook subscriptions require a valid endpoint that responds to verification challenges. ## Xero Accounting Integration Xero uses OAuth 2.0. The API base is https://api.xero.com/api.xro/2.0/. Endpoints include Invoices, Contacts, Payments, and BankTransactions. Connections are tenant-specific—multi-tenant apps must handle organization switching. Rate limits: 60 calls per minute per organization. ## PostgreSQL Best Practices Use connection pooling (PgBouncer) for web applications. Index foreign keys and frequently queried columns. Avoid N+1 queries—use JOINs or batch loading. For large tables, consider partitioning by date. Always use parameterized queries to prevent SQL injection. ## Redis Caching Patterns Use Redis for session storage, rate limiting, and cache-aside patterns. Set TTLs on cached data to prevent stale reads. Consider Redis Cluster for high availability. Monitor memory usage—Redis holds everything in RAM. ## HubSpot CRM Integration HubSpot offers a REST API and webhooks for real-time sync. Authentication uses private apps (access token) or OAuth for public apps. The CRM API covers contacts, companies, deals, and tickets. Use the Search API for complex queries. Webhook subscriptions require a valid endpoint that responds to verification challenges. ## Xero Accounting Integration Xero uses OAuth 2.0. The API base is https://api.xero.com/api.xro/2.0/. Endpoints include Invoices, Contacts, Payments, and BankTransactions. Connections are tenant-specific—multi-tenant apps must handle organization switching. Rate limits: 60 calls per minute per organization. ## PostgreSQL Best Practices Use connection pooling (PgBouncer) for web applications. Index foreign keys and frequently queried columns. Avoid N+1 queries—use JOINs or batch loading. For large tables, consider partitioning by date. Always use parameterized queries to prevent SQL injection. ## Redis Caching Patterns Use Redis for session storage, rate limiting, and cache-aside patterns. Set TTLs on cached data to prevent stale reads. Consider Redis Cluster for high availability. Monitor memory usage—Redis holds everything in RAM. ## HubSpot CRM Integration HubSpot offers a REST API and webhooks for real-time sync. Authentication uses private apps (access token) or OAuth for public apps. The CRM API covers contacts, companies, deals, and tickets. Use the Search API for complex queries. Webhook subscriptions require a valid endpoint that responds to verification challenges. ## Xero Accounting Integration Xero uses OAuth 2.0. The API base is https://api.xero.com/api.xro/2.0/. Endpoints include Invoices, Contacts, Payments, and BankTransactions. Connections are tenant-specific—multi-tenant apps must handle organization switching. Rate limits: 60 calls per minute per organization. ## PostgreSQL Best Practices Use connection pooling (PgBouncer) for web applications. Index foreign keys and frequently queried columns. Avoid N+1 queries—use JOINs or batch loading. For large tables, consider partitioning by date. Always use parameterized queries to prevent SQL injection. ## Redis Caching Patterns Use Redis for session storage, rate limiting, and cache-aside patterns. Set TTLs on cached data to prevent stale reads. Consider Redis Cluster for high availability. Monitor memory usage—Redis holds everything in RAM. ## HubSpot CRM Integration HubSpot offers a REST API and webhooks for real-time sync. Authentication uses private apps (access token) or OAuth for public apps. The CRM API covers contacts, companies, deals, and tickets. Use the Search API for complex queries. Webhook subscriptions require a valid endpoint that responds to verification challenges. ## Xero Accounting Integration Xero uses OAuth 2.0. The API base is https://api.xero.com/api.xro/2.0/. Endpoints include Invoices, Contacts, Payments, and BankTransactions. Connections are tenant-specific—multi-tenant apps must handle organization switching. Rate limits: 60 calls per minute per organization. ## PostgreSQL Best Practices Use connection pooling (PgBouncer) for web applications. Index foreign keys and frequently queried columns. Avoid N+1 queries—use JOINs or batch loading. For large tables, consider partitioning by date. Always use parameterized queries to prevent SQL injection. ## Redis Caching Patterns Use Redis for session storage, rate limiting, and cache-aside patterns. Set TTLs on cached data to prevent stale reads. Consider Redis Cluster for high availability. Monitor memory usage—Redis holds everything in RAM. ## HubSpot CRM Integration HubSpot offers a REST API and webhooks for real-time sync. Authentication uses private apps (access token) or OAuth for public apps. The CRM API covers contacts, companies, deals, and tickets. Use the Search API for complex queries. Webhook subscriptions require a valid endpoint that responds to verification challenges. ## Xero Accounting Integration Xero uses OAuth 2.0. The API base is https://api.xero.com/api.xro/2.0/. Endpoints include Invoices, Contacts, Payments, and BankTransactions. Connections are tenant-specific—multi-tenant apps must handle organization switching. Rate limits: 60 calls per minute per organization. ## PostgreSQL Best Practices Use connection pooling (PgBouncer) for web applications. Index foreign keys and frequently queried columns. Avoid N+1 queries—use JOINs or batch loading. For large tables, consider partitioning by date. Always use parameterized queries to prevent SQL injection. ## Redis Caching Patterns Use Redis for session storage, rate limiting, and cache-aside patterns. Set TTLs on cached data to prevent stale reads. Consider Redis Cluster for high availability. Monitor memory usage—Redis holds everything in RAM. ## HubSpot CRM Integration HubSpot offers a REST API and webhooks for real-time sync. Authentication uses private apps (access token) or OAuth for public apps. The CRM API covers contacts, companies, deals, and tickets. Use the Search API for complex queries. Webhook subscriptions require a valid endpoint that responds to verification challenges. ## Xero Accounting Integration Xero uses OAuth 2.0. The API base is https://api.xero.com/api.xro/2.0/. Endpoints include Invoices, Contacts, Payments, and BankTransactions. Connections are tenant-specific—multi-tenant apps must handle organization switching. Rate limits: 60 calls per minute per organization. ## PostgreSQL Best Practices Use connection pooling (PgBouncer) for web applications. Index foreign keys and frequently queried columns. Avoid N+1 queries—use JOINs or batch loading. For large tables, consider partitioning by date. Always use parameterized queries to prevent SQL injection. ## Redis Caching Patterns Use Redis for session storage, rate limiting, and cache-aside patterns. Set TTLs on cached data to prevent stale reads. Consider Redis Cluster for high availability. Monitor memory usage—Redis holds everything in RAM. ## HubSpot CRM Integration HubSpot offers a REST API and webhooks for real-time sync. Authentication uses private apps (access token) or OAuth for public apps. The CRM API covers contacts, companies, deals, and tickets. Use the Search API for complex queries. Webhook subscriptions require a valid endpoint that responds to verification challenges. ## Xero Accounting Integration Xero uses OAuth 2.0. The API base is https://api.xero.com/api.xro/2.0/. Endpoints include Invoices, Contacts, Payments, and BankTransactions. Connections are tenant-specific—multi-tenant apps must handle organization switching. Rate limits: 60 calls per minute per organization. ## PostgreSQL Best Practices Use connection pooling (PgBouncer) for web applications. Index foreign keys and frequently queried columns. Avoid N+1 queries—use JOINs or batch loading. For large tables, consider partitioning by date. Always use parameterized queries to prevent SQL injection. ## Redis Caching Patterns Use Redis for session storage, rate limiting, and cache-aside patterns. Set TTLs on cached data to prevent stale reads. Consider Redis Cluster for high availability. Monitor memory usage—Redis holds everything in RAM. ## HubSpot CRM Integration HubSpot offers a REST API and webhooks for real-time sync. Authentication uses private apps (access token) or OAuth for public apps. The CRM API covers contacts, companies, deals, and tickets. Use the Search API for complex queries. Webhook subscriptions require a valid endpoint that responds to verification challenges. ## Xero Accounting Integration Xero uses OAuth 2.0. The API base is https://api.xero.com/api.xro/2.0/. Endpoints include Invoices, Contacts, Payments, and BankTransactions. Connections are tenant-specific—multi-tenant apps must handle organization switching. Rate limits: 60 calls per minute per organization. ## PostgreSQL Best Practices Use connection pooling (PgBouncer) for web applications. Index foreign keys and frequently queried columns. Avoid N+1 queries—use JOINs or batch loading. For large tables, consider partitioning by date. Always use parameterized queries to prevent SQL injection. ## Redis Caching Patterns Use Redis for session storage, rate limiting, and cache-aside patterns. Set TTLs on cached data to prevent stale reads. Consider Redis Cluster for high availability. Monitor memory usage—Redis holds everything in RAM. ## HubSpot CRM Integration HubSpot offers a REST API and webhooks for real-time sync. Authentication uses private apps (access token) or OAuth for public apps. The CRM API covers contacts, companies, deals, and tickets. Use the Search API for complex queries. Webhook subscriptions require a valid endpoint that responds to verification challenges. ## Xero Accounting Integration Xero uses OAuth 2.0. The API base is https://api.xero.com/api.xro/2.0/. Endpoints include Invoices, Contacts, Payments, and BankTransactions. Connections are tenant-specific—multi-tenant apps must handle organization switching. Rate limits: 60 calls per minute per organization. ## PostgreSQL Best Practices Use connection pooling (PgBouncer) for web applications. Index foreign keys and frequently queried columns. Avoid N+1 queries—use JOINs or batch loading. For large tables, consider partitioning by date. Always use parameterized queries to prevent SQL injection. ## Redis Caching Patterns Use Redis for session storage, rate limiting, and cache-aside patterns. Set TTLs on cached data to prevent stale reads. Consider Redis Cluster for high availability. Monitor memory usage—Redis holds everything in RAM. ## HubSpot CRM Integration HubSpot offers a REST API and webhooks for real-time sync. Authentication uses private apps (access token) or OAuth for public apps. The CRM API covers contacts, companies, deals, and tickets. Use the Search API for complex queries. Webhook subscriptions require a valid endpoint that responds to verification challenges. ## Xero Accounting Integration Xero uses OAuth 2.0. The API base is https://api.xero.com/api.xro/2.0/. Endpoints include Invoices, Contacts, Payments, and BankTransactions. Connections are tenant-specific—multi-tenant apps must handle organization switching. Rate limits: 60 calls per minute per organization. ## PostgreSQL Best Practices Use connection pooling (PgBouncer) for web applications. Index foreign keys and frequently queried columns. Avoid N+1 queries—use JOINs or batch loading. For large tables, consider partitioning by date. Always use parameterized queries to prevent SQL injection. ## Redis Caching Patterns Use Redis for session storage, rate limiting, and cache-aside patterns. Set TTLs on cached data to prevent stale reads. Consider Redis Cluster for high availability. Monitor memory usage—Redis holds everything in RAM. ## HubSpot CRM Integration HubSpot offers a REST API and webhooks for real-time sync. Authentication uses private apps (access token) or OAuth for public apps. The CRM API covers contacts, companies, deals, and tickets. Use the Search API for complex queries. Webhook subscriptions require a valid endpoint that responds to verification challenges. ## Xero Accounting Integration Xero uses OAuth 2.0. The API base is https://api.xero.com/api.xro/2.0/. Endpoints include Invoices, Contacts, Payments, and BankTransactions. Connections are tenant-specific—multi-tenant apps must handle organization switching. Rate limits: 60 calls per minute per organization. ## PostgreSQL Best Practices Use connection pooling (PgBouncer) for web applications. Index foreign keys and frequently queried columns. Avoid N+1 queries—use JOINs or batch loading. For large tables, consider partitioning by date. Always use parameterized queries to prevent SQL injection. ## Redis Caching Patterns Use Redis for session storage, rate limiting, and cache-aside patterns. Set TTLs on cached data to prevent stale reads. Consider Redis Cluster for high availability. Monitor memory usage—Redis holds everything in RAM. ## HubSpot CRM Integration HubSpot offers a REST API and webhooks for real-time sync. Authentication uses private apps (access token) or OAuth for public apps. The CRM API covers contacts, companies, deals, and tickets. Use the Search API for complex queries. Webhook subscriptions require a valid endpoint that responds to verification challenges. ## Xero Accounting Integration Xero uses OAuth 2.0. The API base is https://api.xero.com/api.xro/2.0/. Endpoints include Invoices, Contacts, Payments, and BankTransactions. Connections are tenant-specific—multi-tenant apps must handle organization switching. Rate limits: 60 calls per minute per organization. ## PostgreSQL Best Practices Use connection pooling (PgBouncer) for web applications. Index foreign keys and frequently queried columns. Avoid N+1 queries—use JOINs or batch loading. For large tables, consider partitioning by date. Always use parameterized queries to prevent SQL injection. ## Redis Caching Patterns Use Redis for session storage, rate limiting, and cache-aside patterns. Set TTLs on cached data to prevent stale reads. Consider Redis Cluster for high availability. Monitor memory usage—Redis holds everything in RAM. ## HubSpot CRM Integration HubSpot offers a REST API and webhooks for real-time sync. Authentication uses private apps (access token) or OAuth for public apps. The CRM API covers contacts, companies, deals, and tickets. Use the Search API for complex queries. Webhook subscriptions require a valid endpoint that responds to verification challenges. ## Xero Accounting Integration Xero uses OAuth 2.0. The API base is https://api.xero.com/api.xro/2.0/. Endpoints include Invoices, Contacts, Payments, and BankTransactions. Connections are tenant-specific—multi-tenant apps must handle organization switching. Rate limits: 60 calls per minute per organization. ## PostgreSQL Best Practices Use connection pooling (PgBouncer) for web applications. Index foreign keys and frequently queried columns. Avoid N+1 queries—use JOINs or batch loading. For large tables, consider partitioning by date. Always use parameterized queries to prevent SQL injection. ## Redis Caching Patterns Use Redis for session storage, rate limiting, and cache-aside patterns. Set TTLs on cached data to prevent stale reads. Consider Redis Cluster for high availability. Monitor memory usage—Redis holds everything in RAM. ## HubSpot CRM Integration HubSpot offers a REST API and webhooks for real-time sync. Authentication uses private apps (access token) or OAuth for public apps. The CRM API covers contacts, companies, deals, and tickets. Use the Search API for complex queries. Webhook subscriptions require a valid endpoint that responds to verification challenges. ## Xero Accounting Integration Xero uses OAuth 2.0. The API base is https://api.xero.com/api.xro/2.0/. Endpoints include Invoices, Contacts, Payments, and BankTransactions. Connections are tenant-specific—multi-tenant apps must handle organization switching. Rate limits: 60 calls per minute per organization. ## PostgreSQL Best Practices Use connection pooling (PgBouncer) for web applications. Index foreign keys and frequently queried columns. Avoid N+1 queries—use JOINs or batch loading. For large tables, consider partitioning by date. Always use parameterized queries to prevent SQL injection. ## Redis Caching Patterns Use Redis for session storage, rate limiting, and cache-aside patterns. Set TTLs on cached data to prevent stale reads. Consider Redis Cluster for high availability. Monitor memory usage—Redis holds everything in RAM. ## HubSpot CRM Integration HubSpot offers a REST API and webhooks for real-time sync. Authentication uses private apps (access token) or OAuth for public apps. The CRM API covers contacts, companies, deals, and tickets. Use the Search API for complex queries. Webhook subscriptions require a valid endpoint that responds to verification challenges. ## Xero Accounting Integration Xero uses OAuth 2.0. The API base is https://api.xero.com/api.xro/2.0/. Endpoints include Invoices, Contacts, Payments, and BankTransactions. Connections are tenant-specific—multi-tenant apps must handle organization switching. Rate limits: 60 calls per minute per organization. ## PostgreSQL Best Practices Use connection pooling (PgBouncer) for web applications. Index foreign keys and frequently queried columns. Avoid N+1 queries—use JOINs or batch loading. For large tables, consider partitioning by date. Always use parameterized queries to prevent SQL injection. ## Redis Caching Patterns Use Redis for session storage, rate limiting, and cache-aside patterns. Set TTLs on cached data to prevent stale reads. Consider Redis Cluster for high availability. Monitor memory usage—Redis holds everything in RAM. ## HubSpot CRM Integration HubSpot offers a REST API and webhooks for real-time sync. Authentication uses private apps (access token) or OAuth for public apps. The CRM API covers contacts, companies, deals, and tickets. Use the Search API for complex queries. Webhook subscriptions require a valid endpoint that responds to verification challenges. ## Xero Accounting Integration Xero uses OAuth 2.0. The API base is https://api.xero.com/api.xro/2.0/. Endpoints include Invoices, Contacts, Payments, and BankTransactions. Connections are tenant-specific—multi-tenant apps must handle organization switching. Rate limits: 60 calls per minute per organization. ## PostgreSQL Best Practices Use connection pooling (PgBouncer) for web applications. Index foreign keys and frequently queried columns. Avoid N+1 queries—use JOINs or batch loading. For large tables, consider partitioning by date. Always use parameterized queries to prevent SQL injection. ## Redis Caching Patterns Use Redis for session storage, rate limiting, and cache-aside patterns. Set TTLs on cached data to prevent stale reads. Consider Redis Cluster for high availability. Monitor memory usage—Redis holds everything in RAM. ## HubSpot CRM Integration HubSpot offers a REST API and webhooks for real-time sync. Authentication uses private apps (access token) or OAuth for public apps. The CRM API covers contacts, companies, deals, and tickets. Use the Search API for complex queries. Webhook subscriptions require a valid endpoint that responds to verification challenges. ## Xero Accounting Integration Xero uses OAuth 2.0. The API base is https://api.xero.com/api.xro/2.0/. Endpoints include Invoices, Contacts, Payments, and BankTransactions. Connections are tenant-specific—multi-tenant apps must handle organization switching. Rate limits: 60 calls per minute per organization. ## PostgreSQL Best Practices Use connection pooling (PgBouncer) for web applications. Index foreign keys and frequently queried columns. Avoid N+1 queries—use JOINs or batch loading. For large tables, consider partitioning by date. Always use parameterized queries to prevent SQL injection. ## Redis Caching Patterns Use Redis for session storage, rate limiting, and cache-aside patterns. Set TTLs on cached data to prevent stale reads. Consider Redis Cluster for high availability. Monitor memory usage—Redis holds everything in RAM. ## HubSpot CRM Integration HubSpot offers a REST API and webhooks for real-time sync. Authentication uses private apps (access token) or OAuth for public apps. The CRM API covers contacts, companies, deals, and tickets. Use the Search API for complex queries. Webhook subscriptions require a valid endpoint that responds to verification challenges. ## Xero Accounting Integration Xero uses OAuth 2.0. The API base is https://api.xero.com/api.xro/2.0/. Endpoints include Invoices, Contacts, Payments, and BankTransactions. Connections are tenant-specific—multi-tenant apps must handle organization switching. Rate limits: 60 calls per minute per organization. ## PostgreSQL Best Practices Use connection pooling (PgBouncer) for web applications. Index foreign keys and frequently queried columns. Avoid N+1 queries—use JOINs or batch loading. For large tables, consider partitioning by date. Always use parameterized queries to prevent SQL injection. ## Redis Caching Patterns Use Redis for session storage, rate limiting, and cache-aside patterns. Set TTLs on cached data to prevent stale reads. Consider Redis Cluster for high availability. Monitor memory usage—Redis holds everything in RAM. ## HubSpot CRM Integration HubSpot offers a REST API and webhooks for real-time sync. Authentication uses private apps (access token) or OAuth for public apps. The CRM API covers contacts, companies, deals, and tickets. Use the Search API for complex queries. Webhook subscriptions require a valid endpoint that responds to verification challenges. ## Xero Accounting Integration Xero uses OAuth 2.0. The API base is https://api.xero.com/api.xro/2.0/. Endpoints include Invoices, Contacts, Payments, and BankTransactions. Connections are tenant-specific—multi-tenant apps must handle organization switching. Rate limits: 60 calls per minute per organization. ## PostgreSQL Best Practices Use connection pooling (PgBouncer) for web applications. Index foreign keys and frequently queried columns. Avoid N+1 queries—use JOINs or batch loading. For large tables, consider partitioning by date. Always use parameterized queries to prevent SQL injection. ## Redis Caching Patterns Use Redis for session storage, rate limiting, and cache-aside patterns. Set TTLs on cached data to prevent stale reads. Consider Redis Cluster for high availability. Monitor memory usage—Redis holds everything in RAM. ## HubSpot CRM Integration HubSpot offers a REST API and webhooks for real-time sync. Authentication uses private apps (access token) or OAuth for public apps. The CRM API covers contacts, companies, deals, and tickets. Use the Search API for complex queries. Webhook subscriptions require a valid endpoint that responds to verification challenges. ## Xero Accounting Integration Xero uses OAuth 2.0. The API base is https://api.xero.com/api.xro/2.0/. Endpoints include Invoices, Contacts, Payments, and BankTransactions. Connections are tenant-specific—multi-tenant apps must handle organization switching. Rate limits: 60 calls per minute per organization. ## PostgreSQL Best Practices Use connection pooling (PgBouncer) for web applications. Index foreign keys and frequently queried columns. Avoid N+1 queries—use JOINs or batch loading. For large tables, consider partitioning by date. Always use parameterized queries to prevent SQL injection. ## Redis Caching Patterns Use Redis for session storage, rate limiting, and cache-aside patterns. Set TTLs on cached data to prevent stale reads. Consider Redis Cluster for high availability. Monitor memory usage—Redis holds everything in RAM. ## HubSpot CRM Integration HubSpot offers a REST API and webhooks for real-time sync. Authentication uses private apps (access token) or OAuth for public apps. The CRM API covers contacts, companies, deals, and tickets. Use the Search API for complex queries. Webhook subscriptions require a valid endpoint that responds to verification challenges. ## Xero Accounting Integration Xero uses OAuth 2.0. The API base is https://api.xero.com/api.xro/2.0/. Endpoints include Invoices, Contacts, Payments, and BankTransactions. Connections are tenant-specific—multi-tenant apps must handle organization switching. Rate limits: 60 calls per minute per organization. ## PostgreSQL Best Practices Use connection pooling (PgBouncer) for web applications. Index foreign keys and frequently queried columns. Avoid N+1 queries—use JOINs or batch loading. For large tables, consider partitioning by date. Always use parameterized queries to prevent SQL injection. ## Redis Caching Patterns Use Redis for session storage, rate limiting, and cache-aside patterns. Set TTLs on cached data to prevent stale reads. Consider Redis Cluster for high availability. Monitor memory usage—Redis holds everything in RAM. ## HubSpot CRM Integration HubSpot offers a REST API and webhooks for real-time sync. Authentication uses private apps (access token) or OAuth for public apps. The CRM API covers contacts, companies, deals, and tickets. Use the Search API for complex queries. Webhook subscriptions require a valid endpoint that responds to verification challenges. ## Xero Accounting Integration Xero uses OAuth 2.0. The API base is https://api.xero.com/api.xro/2.0/. Endpoints include Invoices, Contacts, Payments, and BankTransactions. Connections are tenant-specific—multi-tenant apps must handle organization switching. Rate limits: 60 calls per minute per organization. ## PostgreSQL Best Practices Use connection pooling (PgBouncer) for web applications. Index foreign keys and frequently queried columns. Avoid N+1 queries—use JOINs or batch loading. For large tables, consider partitioning by date. Always use parameterized queries to prevent SQL injection. ## Redis Caching Patterns Use Redis for session storage, rate limiting, and cache-aside patterns. Set TTLs on cached data to prevent stale reads. Consider Redis Cluster for high availability. Monitor memory usage—Redis holds everything in RAM. ## HubSpot CRM Integration HubSpot offers a REST API and webhooks for real-time sync. Authentication uses private apps (access token) or OAuth for public apps. The CRM API covers contacts, companies, deals, and tickets. Use the Search API for complex queries. Webhook subscriptions require a valid endpoint that responds to verification challenges. ## Xero Accounting Integration Xero uses OAuth 2.0. The API base is https://api.xero.com/api.xro/2.0/. Endpoints include Invoices, Contacts, Payments, and BankTransactions. Connections are tenant-specific—multi-tenant apps must handle organization switching. Rate limits: 60 calls per minute per organization. ## PostgreSQL Best Practices Use connection pooling (PgBouncer) for web applications. Index foreign keys and frequently queried columns. Avoid N+1 queries—use JOINs or batch loading. For large tables, consider partitioning by date. Always use parameterized queries to prevent SQL injection. ## Redis Caching Patterns Use Redis for session storage, rate limiting, and cache-aside patterns. Set TTLs on cached data to prevent stale reads. Consider Redis Cluster for high availability. Monitor memory usage—Redis holds everything in RAM. ## HubSpot CRM Integration HubSpot offers a REST API and webhooks for real-time sync. Authentication uses private apps (access token) or OAuth for public apps. The CRM API covers contacts, companies, deals, and tickets. Use the Search API for complex queries. Webhook subscriptions require a valid endpoint that responds to verification challenges. ## Xero Accounting Integration Xero uses OAuth 2.0. The API base is https://api.xero.com/api.xro/2.0/. Endpoints include Invoices, Contacts, Payments, and BankTransactions. Connections are tenant-specific—multi-tenant apps must handle organization switching. Rate limits: 60 calls per minute per organization. ## PostgreSQL Best Practices Use connection pooling (PgBouncer) for web applications. Index foreign keys and frequently queried columns. Avoid N+1 queries—use JOINs or batch loading. For large tables, consider partitioning by date. Always use parameterized queries to prevent SQL injection. ## Redis Caching Patterns Use Redis for session storage, rate limiting, and cache-aside patterns. Set TTLs on cached data to prevent stale reads. Consider Redis Cluster for high availability. Monitor memory usage—Redis holds everything in RAM. ## HubSpot CRM Integration HubSpot offers a REST API and webhooks for real-time sync. Authentication uses private apps (access token) or OAuth for public apps. The CRM API covers contacts, companies, deals, and tickets. Use the Search API for complex queries. Webhook subscriptions require a valid endpoint that responds to verification challenges. ## Xero Accounting Integration Xero uses OAuth 2.0. The API base is https://api.xero.com/api.xro/2.0/. Endpoints include Invoices, Contacts, Payments, and BankTransactions. Connections are tenant-specific—multi-tenant apps must handle organization switching. Rate limits: 60 calls per minute per organization. ## PostgreSQL Best Practices Use connection pooling (PgBouncer) for web applications. Index foreign keys and frequently queried columns. Avoid N+1 queries—use JOINs or batch loading. For large tables, consider partitioning by date. Always use parameterized queries to prevent SQL injection. ## Redis Caching Patterns Use Redis for session storage, rate limiting, and cache-aside patterns. Set TTLs on cached data to prevent stale reads. Consider Redis Cluster for high availability. Monitor memory usage—Redis holds everything in RAM. ## HubSpot CRM Integration HubSpot offers a REST API and webhooks for real-time sync. Authentication uses private apps (access token) or OAuth for public apps. The CRM API covers contacts, companies, deals, and tickets. Use the Search API for complex queries. Webhook subscriptions require a valid endpoint that responds to verification challenges. ## Xero Accounting Integration Xero uses OAuth 2.0. The API base is https://api.xero.com/api.xro/2.0/. Endpoints include Invoices, Contacts, Payments, and BankTransactions. Connections are tenant-specific—multi-tenant apps must handle organization switching. Rate limits: 60 calls per minute per organization. ## PostgreSQL Best Practices Use connection pooling (PgBouncer) for web applications. Index foreign keys and frequently queried columns. Avoid N+1 queries—use JOINs or batch loading. For large tables, consider partitioning by date. Always use parameterized queries to prevent SQL injection. ## Redis Caching Patterns Use Redis for session storage, rate limiting, and cache-aside patterns. Set TTLs on cached data to prevent stale reads. Consider Redis Cluster for high availability. Monitor memory usage—Redis holds everything in RAM. ## HubSpot CRM Integration HubSpot offers a REST API and webhooks for real-time sync. Authentication uses private apps (access token) or OAuth for public apps. The CRM API covers contacts, companies, deals, and tickets. Use the Search API for complex queries. Webhook subscriptions require a valid endpoint that responds to verification challenges. ## Xero Accounting Integration Xero uses OAuth 2.0. The API base is https://api.xero.com/api.xro/2.0/. Endpoints include Invoices, Contacts, Payments, and BankTransactions. Connections are tenant-specific—multi-tenant apps must handle organization switching. Rate limits: 60 calls per minute per organization. ## PostgreSQL Best Practices Use connection pooling (PgBouncer) for web applications. Index foreign keys and frequently queried columns. Avoid N+1 queries—use JOINs or batch loading. For large tables, consider partitioning by date. Always use parameterized queries to prevent SQL injection. ## Redis Caching Patterns Use Redis for session storage, rate limiting, and cache-aside patterns. Set TTLs on cached data to prevent stale reads. Consider Redis Cluster for high availability. Monitor memory usage—Redis holds everything in RAM. ## HubSpot CRM Integration HubSpot offers a REST API and webhooks for real-time sync. Authentication uses private apps (access token) or OAuth for public apps. The CRM API covers contacts, companies, deals, and tickets. Use the Search API for complex queries. Webhook subscriptions require a valid endpoint that responds to verification challenges. ## Xero Accounting Integration Xero uses OAuth 2.0. The API base is https://api.xero.com/api.xro/2.0/. Endpoints include Invoices, Contacts, Payments, and BankTransactions. Connections are tenant-specific—multi-tenant apps must handle organization switching. Rate limits: 60 calls per minute per organization. ## PostgreSQL Best Practices Use connection pooling (PgBouncer) for web applications. Index foreign keys and frequently queried columns. Avoid N+1 queries—use JOINs or batch loading. For large tables, consider partitioning by date. Always use parameterized queries to prevent SQL injection. ## Redis Caching Patterns Use Redis for session storage, rate limiting, and cache-aside patterns. Set TTLs on cached data to prevent stale reads. Consider Redis Cluster for high availability. Monitor memory usage—Redis holds everything in RAM. ## HubSpot CRM Integration HubSpot offers a REST API and webhooks for real-time sync. Authentication uses private apps (access token) or OAuth for public apps. The CRM API covers contacts, companies, deals, and tickets. Use the Search API for complex queries. Webhook subscriptions require a valid endpoint that responds to verification challenges. ## Xero Accounting Integration Xero uses OAuth 2.0. The API base is https://api.xero.com/api.xro/2.0/. Endpoints include Invoices, Contacts, Payments, and BankTransactions. Connections are tenant-specific—multi-tenant apps must handle organization switching. Rate limits: 60 calls per minute per organization. ## PostgreSQL Best Practices Use connection pooling (PgBouncer) for web applications. Index foreign keys and frequently queried columns. Avoid N+1 queries—use JOINs or batch loading. For large tables, consider partitioning by date. Always use parameterized queries to prevent SQL injection. ## Redis Caching Patterns Use Redis for session storage, rate limiting, and cache-aside patterns. Set TTLs on cached data to prevent stale reads. Consider Redis Cluster for high availability. Monitor memory usage—Redis holds everything in RAM. ## HubSpot CRM Integration HubSpot offers a REST API and webhooks for real-time sync. Authentication uses private apps (access token) or OAuth for public apps. The CRM API covers contacts, companies, deals, and tickets. Use the Search API for complex queries. Webhook subscriptions require a valid endpoint that responds to verification challenges. ## Xero Accounting Integration Xero uses OAuth 2.0. The API base is https://api.xero.com/api.xro/2.0/. Endpoints include Invoices, Contacts, Payments, and BankTransactions. Connections are tenant-specific—multi-tenant apps must handle organization switching. Rate limits: 60 calls per minute per organization. ## PostgreSQL Best Practices Use connection pooling (PgBouncer) for web applications. Index foreign keys and frequently queried columns. Avoid N+1 queries—use JOINs or batch loading. For large tables, consider partitioning by date. Always use parameterized queries to prevent SQL injection. ## Redis Caching Patterns Use Redis for session storage, rate limiting, and cache-aside patterns. Set TTLs on cached data to prevent stale reads. Consider Redis Cluster for high availability. Monitor memory usage—Redis holds everything in RAM. ## HubSpot CRM Integration HubSpot offers a REST API and webhooks for real-time sync. Authentication uses private apps (access token) or OAuth for public apps. The CRM API covers contacts, companies, deals, and tickets. Use the Search API for complex queries. Webhook subscriptions require a valid endpoint that responds to verification challenges. ## Xero Accounting Integration Xero uses OAuth 2.0. The API base is https://api.xero.com/api.xro/2.0/. Endpoints include Invoices, Contacts, Payments, and BankTransactions. Connections are tenant-specific—multi-tenant apps must handle organization switching. Rate limits: 60 calls per minute per organization. ## PostgreSQL Best Practices Use connection pooling (PgBouncer) for web applications. Index foreign keys and frequently queried columns. Avoid N+1 queries—use JOINs or batch loading. For large tables, consider partitioning by date. Always use parameterized queries to prevent SQL injection. ## Redis Caching Patterns Use Redis for session storage, rate limiting, and cache-aside patterns. Set TTLs on cached data to prevent stale reads. Consider Redis Cluster for high availability. Monitor memory usage—Redis holds everything in RAM. ## HubSpot CRM Integration HubSpot offers a REST API and webhooks for real-time sync. Authentication uses private apps (access token) or OAuth for public apps. The CRM API covers contacts, companies, deals, and tickets. Use the Search API for complex queries. Webhook subscriptions require a valid endpoint that responds to verification challenges. ## Xero Accounting Integration Xero uses OAuth 2.0. The API base is https://api.xero.com/api.xro/2.0/. Endpoints include Invoices, Contacts, Payments, and BankTransactions. Connections are tenant-specific—multi-tenant apps must handle organization switching. Rate limits: 60 calls per minute per organization. ## PostgreSQL Best Practices Use connection pooling (PgBouncer) for web applications. Index foreign keys and frequently queried columns. Avoid N+1 queries—use JOINs or batch loading. For large tables, consider partitioning by date. Always use parameterized queries to prevent SQL injection. ## Redis Caching Patterns Use Redis for session storage, rate limiting, and cache-aside patterns. Set TTLs on cached data to prevent stale reads. Consider Redis Cluster for high availability. Monitor memory usage—Redis holds everything in RAM. ## HubSpot CRM Integration HubSpot offers a REST API and webhooks for real-time sync. Authentication uses private apps (access token) or OAuth for public apps. The CRM API covers contacts, companies, deals, and tickets. Use the Search API for complex queries. Webhook subscriptions require a valid endpoint that responds to verification challenges. ## Xero Accounting Integration Xero uses OAuth 2.0. The API base is https://api.xero.com/api.xro/2.0/. Endpoints include Invoices, Contacts, Payments, and BankTransactions. Connections are tenant-specific—multi-tenant apps must handle organization switching. Rate limits: 60 calls per minute per organization. ## PostgreSQL Best Practices Use connection pooling (PgBouncer) for web applications. Index foreign keys and frequently queried columns. Avoid N+1 queries—use JOINs or batch loading. For large tables, consider partitioning by date. Always use parameterized queries to prevent SQL injection. ## Redis Caching Patterns Use Redis for session storage, rate limiting, and cache-aside patterns. Set TTLs on cached data to prevent stale reads. Consider Redis Cluster for high availability. Monitor memory usage—Redis holds everything in RAM. ## HubSpot CRM Integration HubSpot offers a REST API and webhooks for real-time sync. Authentication uses private apps (access token) or OAuth for public apps. The CRM API covers contacts, companies, deals, and tickets. Use the Search API for complex queries. Webhook subscriptions require a valid endpoint that responds to verification challenges. ## Xero Accounting Integration Xero uses OAuth 2.0. The API base is https://api.xero.com/api.xro/2.0/. Endpoints include Invoices, Contacts, Payments, and BankTransactions. Connections are tenant-specific—multi-tenant apps must handle organization switching. Rate limits: 60 calls per minute per organization. ## PostgreSQL Best Practices Use connection pooling (PgBouncer) for web applications. Index foreign keys and frequently queried columns. Avoid N+1 queries—use JOINs or batch loading. For large tables, consider partitioning by date. Always use parameterized queries to prevent SQL injection. ## Redis Caching Patterns Use Redis for session storage, rate limiting, and cache-aside patterns. Set TTLs on cached data to prevent stale reads. Consider Redis Cluster for high availability. Monitor memory usage—Redis holds everything in RAM. ## HubSpot CRM Integration HubSpot offers a REST API and webhooks for real-time sync. Authentication uses private apps (access token) or OAuth for public apps. The CRM API covers contacts, companies, deals, and tickets. Use the Search API for complex queries. Webhook subscriptions require a valid endpoint that responds to verification challenges. ## Xero Accounting Integration Xero uses OAuth 2.0. The API base is https://api.xero.com/api.xro/2.0/. Endpoints include Invoices, Contacts, Payments, and BankTransactions. Connections are tenant-specific—multi-tenant apps must handle organization switching. Rate limits: 60 calls per minute per organization. ## PostgreSQL Best Practices Use connection pooling (PgBouncer) for web applications. Index foreign keys and frequently queried columns. Avoid N+1 queries—use JOINs or batch loading. For large tables, consider partitioning by date. Always use parameterized queries to prevent SQL injection. ## Redis Caching Patterns Use Redis for session storage, rate limiting, and cache-aside patterns. Set TTLs on cached data to prevent stale reads. Consider Redis Cluster for high availability. Monitor memory usage—Redis holds everything in RAM. ## HubSpot CRM Integration HubSpot offers a REST API and webhooks for real-time sync. Authentication uses private apps (access token) or OAuth for public apps. The CRM API covers contacts, companies, deals, and tickets. Use the Search API for complex queries. Webhook subscriptions require a valid endpoint that responds to verification challenges. ## Xero Accounting Integration Xero uses OAuth 2.0. The API base is https://api.xero.com/api.xro/2.0/. Endpoints include Invoices, Contacts, Payments, and BankTransactions. Connections are tenant-specific—multi-tenant apps must handle organization switching. Rate limits: 60 calls per minute per organization. ## PostgreSQL Best Practices Use connection pooling (PgBouncer) for web applications. Index foreign keys and frequently queried columns. Avoid N+1 queries—use JOINs or batch loading. For large tables, consider partitioning by date. Always use parameterized queries to prevent SQL injection. ## Redis Caching Patterns Use Redis for session storage, rate limiting, and cache-aside patterns. Set TTLs on cached data to prevent stale reads. Consider Redis Cluster for high availability. Monitor memory usage—Redis holds everything in RAM. ## HubSpot CRM Integration HubSpot offers a REST API and webhooks for real-time sync. Authentication uses private apps (access token) or OAuth for public apps. The CRM API covers contacts, companies, deals, and tickets. Use the Search API for complex queries. Webhook subscriptions require a valid endpoint that responds to verification challenges. ## Xero Accounting Integration Xero uses OAuth 2.0. The API base is https://api.xero.com/api.xro/2.0/. Endpoints include Invoices, Contacts, Payments, and BankTransactions. Connections are tenant-specific—multi-tenant apps must handle organization switching. Rate limits: 60 calls per minute per organization. ## PostgreSQL Best Practices Use connection pooling (PgBouncer) for web applications. Index foreign keys and frequently queried columns. Avoid N+1 queries—use JOINs or batch loading. For large tables, consider partitioning by date. Always use parameterized queries to prevent SQL injection. ## Redis Caching Patterns Use Redis for session storage, rate limiting, and cache-aside patterns. Set TTLs on cached data to prevent stale reads. Consider Redis Cluster for high availability. Monitor memory usage—Redis holds everything in RAM. ## HubSpot CRM Integration HubSpot offers a REST API and webhooks for real-time sync. Authentication uses private apps (access token) or OAuth for public apps. The CRM API covers contacts, companies, deals, and tickets. Use the Search API for complex queries. Webhook subscriptions require a valid endpoint that responds to verification challenges. ## Xero Accounting Integration Xero uses OAuth 2.0. The API base is https://api.xero.com/api.xro/2.0/. Endpoints include Invoices, Contacts, Payments, and BankTransactions. Connections are tenant-specific—multi-tenant apps must handle organization switching. Rate limits: 60 calls per minute per organization. ## PostgreSQL Best Practices Use connection pooling (PgBouncer) for web applications. Index foreign keys and frequently queried columns. Avoid N+1 queries—use JOINs or batch loading. For large tables, consider partitioning by date. Always use parameterized queries to prevent SQL injection. ## Redis Caching Patterns Use Redis for session storage, rate limiting, and cache-aside patterns. Set TTLs on cached data to prevent stale reads. Consider Redis Cluster for high availability. Monitor memory usage—Redis holds everything in RAM. ## HubSpot CRM Integration HubSpot offers a REST API and webhooks for real-time sync. Authentication uses private apps (access token) or OAuth for public apps. The CRM API covers contacts, companies, deals, and tickets. Use the Search API for complex queries. Webhook subscriptions require a valid endpoint that responds to verification challenges. ## Xero Accounting Integration Xero uses OAuth 2.0. The API base is https://api.xero.com/api.xro/2.0/. Endpoints include Invoices, Contacts, Payments, and BankTransactions. Connections are tenant-specific—multi-tenant apps must handle organization switching. Rate limits: 60 calls per minute per organization. ## PostgreSQL Best Practices Use connection pooling (PgBouncer) for web applications. Index foreign keys and frequently queried columns. Avoid N+1 queries—use JOINs or batch loading. For large tables, consider partitioning by date. Always use parameterized queries to prevent SQL injection. ## Redis Caching Patterns Use Redis for session storage, rate limiting, and cache-aside patterns. Set TTLs on cached data to prevent stale reads. Consider Redis Cluster for high availability. Monitor memory usage—Redis holds everything in RAM. ## HubSpot CRM Integration HubSpot offers a REST API and webhooks for real-time sync. Authentication uses private apps (access token) or OAuth for public apps. The CRM API covers contacts, companies, deals, and tickets. Use the Search API for complex queries. Webhook subscriptions require a valid endpoint that responds to verification challenges. ## Xero Accounting Integration Xero uses OAuth 2.0. The API base is https://api.xero.com/api.xro/2.0/. Endpoints include Invoices, Contacts, Payments, and BankTransactions. Connections are tenant-specific—multi-tenant apps must handle organization switching. Rate limits: 60 calls per minute per organization. ## PostgreSQL Best Practices Use connection pooling (PgBouncer) for web applications. Index foreign keys and frequently queried columns. Avoid N+1 queries—use JOINs or batch loading. For large tables, consider partitioning by date. Always use parameterized queries to prevent SQL injection. ## Redis Caching Patterns Use Redis for session storage, rate limiting, and cache-aside patterns. Set TTLs on cached data to prevent stale reads. Consider Redis Cluster for high availability. Monitor memory usage—Redis holds everything in RAM. ## HubSpot CRM Integration HubSpot offers a REST API and webhooks for real-time sync. Authentication uses private apps (access token) or OAuth for public apps. The CRM API covers contacts, companies, deals, and tickets. Use the Search API for complex queries. Webhook subscriptions require a valid endpoint that responds to verification challenges. ## Xero Accounting Integration Xero uses OAuth 2.0. The API base is https://api.xero.com/api.xro/2.0/. Endpoints include Invoices, Contacts, Payments, and BankTransactions. Connections are tenant-specific—multi-tenant apps must handle organization switching. Rate limits: 60 calls per minute per organization. ## PostgreSQL Best Practices Use connection pooling (PgBouncer) for web applications. Index foreign keys and frequently queried columns. Avoid N+1 queries—use JOINs or batch loading. For large tables, consider partitioning by date. Always use parameterized queries to prevent SQL injection. ## Redis Caching Patterns Use Redis for session storage, rate limiting, and cache-aside patterns. Set TTLs on cached data to prevent stale reads. Consider Redis Cluster for high availability. Monitor memory usage—Redis holds everything in RAM. ## HubSpot CRM Integration HubSpot offers a REST API and webhooks for real-time sync. Authentication uses private apps (access token) or OAuth for public apps. The CRM API covers contacts, companies, deals, and tickets. Use the Search API for complex queries. Webhook subscriptions require a valid endpoint that responds to verification challenges. ## Xero Accounting Integration Xero uses OAuth 2.0. The API base is https://api.xero.com/api.xro/2.0/. Endpoints include Invoices, Contacts, Payments, and BankTransactions. Connections are tenant-specific—multi-tenant apps must handle organization switching. Rate limits: 60 calls per minute per organization. ## PostgreSQL Best Practices Use connection pooling (PgBouncer) for web applications. Index foreign keys and frequently queried columns. Avoid N+1 queries—use JOINs or batch loading. For large tables, consider partitioning by date. Always use parameterized queries to prevent SQL injection. ## Redis Caching Patterns Use Redis for session storage, rate limiting, and cache-aside patterns. Set TTLs on cached data to prevent stale reads. Consider Redis Cluster for high availability. Monitor memory usage—Redis holds everything in RAM. ## HubSpot CRM Integration HubSpot offers a REST API and webhooks for real-time sync. Authentication uses private apps (access token) or OAuth for public apps. The CRM API covers contacts, companies, deals, and tickets. Use the Search API for complex queries. Webhook subscriptions require a valid endpoint that responds to verification challenges. ## Xero Accounting Integration Xero uses OAuth 2.0. The API base is https://api.xero.com/api.xro/2.0/. Endpoints include Invoices, Contacts, Payments, and BankTransactions. Connections are tenant-specific—multi-tenant apps must handle organization switching. Rate limits: 60 calls per minute per organization. ## PostgreSQL Best Practices Use connection pooling (PgBouncer) for web applications. Index foreign keys and frequently queried columns. Avoid N+1 queries—use JOINs or batch loading. For large tables, consider partitioning by date. Always use parameterized queries to prevent SQL injection. ## Redis Caching Patterns Use Redis for session storage, rate limiting, and cache-aside patterns. Set TTLs on cached data to prevent stale reads. Consider Redis Cluster for high availability. Monitor memory usage—Redis holds everything in RAM. ## HubSpot CRM Integration HubSpot offers a REST API and webhooks for real-time sync. Authentication uses private apps (access token) or OAuth for public apps. The CRM API covers contacts, companies, deals, and tickets. Use the Search API for complex queries. Webhook subscriptions require a valid endpoint that responds to verification challenges. ## Xero Accounting Integration Xero uses OAuth 2.0. The API base is https://api.xero.com/api.xro/2.0/. Endpoints include Invoices, Contacts, Payments, and BankTransactions. Connections are tenant-specific—multi-tenant apps must handle organization switching. Rate limits: 60 calls per minute per organization. ## PostgreSQL Best Practices Use connection pooling (PgBouncer) for web applications. Index foreign keys and frequently queried columns. Avoid N+1 queries—use JOINs or batch loading. For large tables, consider partitioning by date. Always use parameterized queries to prevent SQL injection. ## Redis Caching Patterns Use Redis for session storage, rate limiting, and cache-aside patterns. Set TTLs on cached data to prevent stale reads. Consider Redis Cluster for high availability. Monitor memory usage—Redis holds everything in RAM. ## HubSpot CRM Integration HubSpot offers a REST API and webhooks for real-time sync. Authentication uses private apps (access token) or OAuth for public apps. The CRM API covers contacts, companies, deals, and tickets. Use the Search API for complex queries. Webhook subscriptions require a valid endpoint that responds to verification challenges. ## Xero Accounting Integration Xero uses OAuth 2.0. The API base is https://api.xero.com/api.xro/2.0/. Endpoints include Invoices, Contacts, Payments, and BankTransactions. Connections are tenant-specific—multi-tenant apps must handle organization switching. Rate limits: 60 calls per minute per organization. ## PostgreSQL Best Practices Use connection pooling (PgBouncer) for web applications. Index foreign keys and frequently queried columns. Avoid N+1 queries—use JOINs or batch loading. For large tables, consider partitioning by date. Always use parameterized queries to prevent SQL injection. ## Redis Caching Patterns Use Redis for session storage, rate limiting, and cache-aside patterns. Set TTLs on cached data to prevent stale reads. Consider Redis Cluster for high availability. Monitor memory usage—Redis holds everything in RAM. ## HubSpot CRM Integration HubSpot offers a REST API and webhooks for real-time sync. Authentication uses private apps (access token) or OAuth for public apps. The CRM API covers contacts, companies, deals, and tickets. Use the Search API for complex queries. Webhook subscriptions require a valid endpoint that responds to verification challenges. ## Xero Accounting Integration Xero uses OAuth 2.0. The API base is https://api.xero.com/api.xro/2.0/. Endpoints include Invoices, Contacts, Payments, and BankTransactions. Connections are tenant-specific—multi-tenant apps must handle organization switching. Rate limits: 60 calls per minute per organization. ## PostgreSQL Best Practices Use connection pooling (PgBouncer) for web applications. Index foreign keys and frequently queried columns. Avoid N+1 queries—use JOINs or batch loading. For large tables, consider partitioning by date. Always use parameterized queries to prevent SQL injection. ## Redis Caching Patterns Use Redis for session storage, rate limiting, and cache-aside patterns. Set TTLs on cached data to prevent stale reads. Consider Redis Cluster for high availability. Monitor memory usage—Redis holds everything in RAM. ## HubSpot CRM Integration HubSpot offers a REST API and webhooks for real-time sync. Authentication uses private apps (access token) or OAuth for public apps. The CRM API covers contacts, companies, deals, and tickets. Use the Search API for complex queries. Webhook subscriptions require a valid endpoint that responds to verification challenges. ## Xero Accounting Integration Xero uses OAuth 2.0. The API base is https://api.xero.com/api.xro/2.0/. Endpoints include Invoices, Contacts, Payments, and BankTransactions. Connections are tenant-specific—multi-tenant apps must handle organization switching. Rate limits: 60 calls per minute per organization. ## PostgreSQL Best Practices Use connection pooling (PgBouncer) for web applications. Index foreign keys and frequently queried columns. Avoid N+1 queries—use JOINs or batch loading. For large tables, consider partitioning by date. Always use parameterized queries to prevent SQL injection. ## Redis Caching Patterns Use Redis for session storage, rate limiting, and cache-aside patterns. Set TTLs on cached data to prevent stale reads. Consider Redis Cluster for high availability. Monitor memory usage—Redis holds everything in RAM. ## HubSpot CRM Integration HubSpot offers a REST API and webhooks for real-time sync. Authentication uses private apps (access token) or OAuth for public apps. The CRM API covers contacts, companies, deals, and tickets. Use the Search API for complex queries. Webhook subscriptions require a valid endpoint that responds to verification challenges. ## Xero Accounting Integration Xero uses OAuth 2.0. The API base is https://api.xero.com/api.xro/2.0/. Endpoints include Invoices, Contacts, Payments, and BankTransactions. Connections are tenant-specific—multi-tenant apps must handle organization switching. Rate limits: 60 calls per minute per organization. ## PostgreSQL Best Practices Use connection pooling (PgBouncer) for web applications. Index foreign keys and frequently queried columns. Avoid N+1 queries—use JOINs or batch loading. For large tables, consider partitioning by date. Always use parameterized queries to prevent SQL injection. ## Redis Caching Patterns Use Redis for session storage, rate limiting, and cache-aside patterns. Set TTLs on cached data to prevent stale reads. Consider Redis Cluster for high availability. Monitor memory usage—Redis holds everything in RAM. ## HubSpot CRM Integration HubSpot offers a REST API and webhooks for real-time sync. Authentication uses private apps (access token) or OAuth for public apps. The CRM API covers contacts, companies, deals, and tickets. Use the Search API for complex queries. Webhook subscriptions require a valid endpoint that responds to verification challenges. ## Xero Accounting Integration Xero uses OAuth 2.0. The API base is https://api.xero.com/api.xro/2.0/. Endpoints include Invoices, Contacts, Payments, and BankTransactions. Connections are tenant-specific—multi-tenant apps must handle organization switching. Rate limits: 60 calls per minute per organization. ## PostgreSQL Best Practices Use connection pooling (PgBouncer) for web applications. Index foreign keys and frequently queried columns. Avoid N+1 queries—use JOINs or batch loading. For large tables, consider partitioning by date. Always use parameterized queries to prevent SQL injection. ## Redis Caching Patterns Use Redis for session storage, rate limiting, and cache-aside patterns. Set TTLs on cached data to prevent stale reads. Consider Redis Cluster for high availability. Monitor memory usage—Redis holds everything in RAM. ## HubSpot CRM Integration HubSpot offers a REST API and webhooks for real-time sync. Authentication uses private apps (access token) or OAuth for public apps. The CRM API covers contacts, companies, deals, and tickets. Use the Search API for complex queries. Webhook subscriptions require a valid endpoint that responds to verification challenges. ## Xero Accounting Integration Xero uses OAuth 2.0. The API base is https://api.xero.com/api.xro/2.0/. Endpoints include Invoices, Contacts, Payments, and BankTransactions. Connections are tenant-specific—multi-tenant apps must handle organization switching. Rate limits: 60 calls per minute per organization. ## PostgreSQL Best Practices Use connection pooling (PgBouncer) for web applications. Index foreign keys and frequently queried columns. Avoid N+1 queries—use JOINs or batch loading. For large tables, consider partitioning by date. Always use parameterized queries to prevent SQL injection. ## Redis Caching Patterns Use Redis for session storage, rate limiting, and cache-aside patterns. Set TTLs on cached data to prevent stale reads. Consider Redis Cluster for high availability. Monitor memory usage—Redis holds everything in RAM. ## HubSpot CRM Integration HubSpot offers a REST API and webhooks for real-time sync. Authentication uses private apps (access token) or OAuth for public apps. The CRM API covers contacts, companies, deals, and tickets. Use the Search API for complex queries. Webhook subscriptions require a valid endpoint that responds to verification challenges. ## Xero Accounting Integration Xero uses OAuth 2.0. The API base is https://api.xero.com/api.xro/2.0/. Endpoints include Invoices, Contacts, Payments, and BankTransactions. Connections are tenant-specific—multi-tenant apps must handle organization switching. Rate limits: 60 calls per minute per organization. ## PostgreSQL Best Practices Use connection pooling (PgBouncer) for web applications. Index foreign keys and frequently queried columns. Avoid N+1 queries—use JOINs or batch loading. For large tables, consider partitioning by date. Always use parameterized queries to prevent SQL injection. ## Redis Caching Patterns Use Redis for session storage, rate limiting, and cache-aside patterns. Set TTLs on cached data to prevent stale reads. Consider Redis Cluster for high availability. Monitor memory usage—Redis holds everything in RAM. ## HubSpot CRM Integration HubSpot offers a REST API and webhooks for real-time sync. Authentication uses private apps (access token) or OAuth for public apps. The CRM API covers contacts, companies, deals, and tickets. Use the Search API for complex queries. Webhook subscriptions require a valid endpoint that responds to verification challenges. ## Xero Accounting Integration Xero uses OAuth 2.0. The API base is https://api.xero.com/api.xro/2.0/. Endpoints include Invoices, Contacts, Payments, and BankTransactions. Connections are tenant-specific—multi-tenant apps must handle organization switching. Rate limits: 60 calls per minute per organization. ## PostgreSQL Best Practices Use connection pooling (PgBouncer) for web applications. Index foreign keys and frequently queried columns. Avoid N+1 queries—use JOINs or batch loading. For large tables, consider partitioning by date. Always use parameterized queries to prevent SQL injection. ## Redis Caching Patterns Use Redis for session storage, rate limiting, and cache-aside patterns. Set TTLs on cached data to prevent stale reads. Consider Redis Cluster for high availability. Monitor memory usage—Redis holds everything in RAM. ## HubSpot CRM Integration HubSpot offers a REST API and webhooks for real-time sync. Authentication uses private apps (access token) or OAuth for public apps. The CRM API covers contacts, companies, deals, and tickets. Use the Search API for complex queries. Webhook subscriptions require a valid endpoint that responds to verification challenges. ## Xero Accounting Integration Xero uses OAuth 2.0. The API base is https://api.xero.com/api.xro/2.0/. Endpoints include Invoices, Contacts, Payments, and BankTransactions. Connections are tenant-specific—multi-tenant apps must handle organization switching. Rate limits: 60 calls per minute per organization. ## PostgreSQL Best Practices Use connection pooling (PgBouncer) for web applications. Index foreign keys and frequently queried columns. Avoid N+1 queries—use JOINs or batch loading. For large tables, consider partitioning by date. Always use parameterized queries to prevent SQL injection. ## Redis Caching Patterns Use Redis for session storage, rate limiting, and cache-aside patterns. Set TTLs on cached data to prevent stale reads. Consider Redis Cluster for high availability. Monitor memory usage—Redis holds everything in RAM. ## HubSpot CRM Integration HubSpot offers a REST API and webhooks for real-time sync. Authentication uses private apps (access token) or OAuth for public apps. The CRM API covers contacts, companies, deals, and tickets. Use the Search API for complex queries. Webhook subscriptions require a valid endpoint that responds to verification challenges. ## Xero Accounting Integration Xero uses OAuth 2.0. The API base is https://api.xero.com/api.xro/2.0/. Endpoints include Invoices, Contacts, Payments, and BankTransactions. Connections are tenant-specific—multi-tenant apps must handle organization switching. Rate limits: 60 calls per minute per organization. ## PostgreSQL Best Practices Use connection pooling (PgBouncer) for web applications. Index foreign keys and frequently queried columns. Avoid N+1 queries—use JOINs or batch loading. For large tables, consider partitioning by date. Always use parameterized queries to prevent SQL injection. ## Redis Caching Patterns Use Redis for session storage, rate limiting, and cache-aside patterns. Set TTLs on cached data to prevent stale reads. Consider Redis Cluster for high availability. Monitor memory usage—Redis holds everything in RAM. ## HubSpot CRM Integration HubSpot offers a REST API and webhooks for real-time sync. Authentication uses private apps (access token) or OAuth for public apps. The CRM API covers contacts, companies, deals, and tickets. Use the Search API for complex queries. Webhook subscriptions require a valid endpoint that responds to verification challenges. ## Xero Accounting Integration Xero uses OAuth 2.0. The API base is https://api.xero.com/api.xro/2.0/. Endpoints include Invoices, Contacts, Payments, and BankTransactions. Connections are tenant-specific—multi-tenant apps must handle organization switching. Rate limits: 60 calls per minute per organization. ## PostgreSQL Best Practices Use connection pooling (PgBouncer) for web applications. Index foreign keys and frequently queried columns. Avoid N+1 queries—use JOINs or batch loading. For large tables, consider partitioning by date. Always use parameterized queries to prevent SQL injection. ## Redis Caching Patterns Use Redis for session storage, rate limiting, and cache-aside patterns. Set TTLs on cached data to prevent stale reads. Consider Redis Cluster for high availability. Monitor memory usage—Redis holds everything in RAM. ## HubSpot CRM Integration HubSpot offers a REST API and webhooks for real-time sync. Authentication uses private apps (access token) or OAuth for public apps. The CRM API covers contacts, companies, deals, and tickets. Use the Search API for complex queries. Webhook subscriptions require a valid endpoint that responds to verification challenges. ## Xero Accounting Integration Xero uses OAuth 2.0. The API base is https://api.xero.com/api.xro/2.0/. Endpoints include Invoices, Contacts, Payments, and BankTransactions. Connections are tenant-specific—multi-tenant apps must handle organization switching. Rate limits: 60 calls per minute per organization. ## PostgreSQL Best Practices Use connection pooling (PgBouncer) for web applications. Index foreign keys and frequently queried columns. Avoid N+1 queries—use JOINs or batch loading. For large tables, consider partitioning by date. Always use parameterized queries to prevent SQL injection. ## Redis Caching Patterns Use Redis for session storage, rate limiting, and cache-aside patterns. Set TTLs on cached data to prevent stale reads. Consider Redis Cluster for high availability. Monitor memory usage—Redis holds everything in RAM. ## HubSpot CRM Integration HubSpot offers a REST API and webhooks for real-time sync. Authentication uses private apps (access token) or OAuth for public apps. The CRM API covers contacts, companies, deals, and tickets. Use the Search API for complex queries. Webhook subscriptions require a valid endpoint that responds to verification challenges. ## Xero Accounting Integration Xero uses OAuth 2.0. The API base is https://api.xero.com/api.xro/2.0/. Endpoints include Invoices, Contacts, Payments, and BankTransactions. Connections are tenant-specific—multi-tenant apps must handle organization switching. Rate limits: 60 calls per minute per organization. ## PostgreSQL Best Practices Use connection pooling (PgBouncer) for web applications. Index foreign keys and frequently queried columns. Avoid N+1 queries—use JOINs or batch loading. For large tables, consider partitioning by date. Always use parameterized queries to prevent SQL injection. ## Redis Caching Patterns Use Redis for session storage, rate limiting, and cache-aside patterns. Set TTLs on cached data to prevent stale reads. Consider Redis Cluster for high availability. Monitor memory usage—Redis holds everything in RAM. ## HubSpot CRM Integration HubSpot offers a REST API and webhooks for real-time sync. Authentication uses private apps (access token) or OAuth for public apps. The CRM API covers contacts, companies, deals, and tickets. Use the Search API for complex queries. Webhook subscriptions require a valid endpoint that responds to verification challenges. ## Xero Accounting Integration Xero uses OAuth 2.0. The API base is https://api.xero.com/api.xro/2.0/. Endpoints include Invoices, Contacts, Payments, and BankTransactions. Connections are tenant-specific—multi-tenant apps must handle organization switching. Rate limits: 60 calls per minute per organization. ## PostgreSQL Best Practices Use connection pooling (PgBouncer) for web applications. Index foreign keys and frequently queried columns. Avoid N+1 queries—use JOINs or batch loading. For large tables, consider partitioning by date. Always use parameterized queries to prevent SQL injection. ## Redis Caching Patterns Use Redis for session storage, rate limiting, and cache-aside patterns. Set TTLs on cached data to prevent stale reads. Consider Redis Cluster for high availability. Monitor memory usage—Redis holds everything in RAM. ## HubSpot CRM Integration HubSpot offers a REST API and webhooks for real-time sync. Authentication uses private apps (access token) or OAuth for public apps. The CRM API covers contacts, companies, deals, and tickets. Use the Search API for complex queries. Webhook subscriptions require a valid endpoint that responds to verification challenges. ## Xero Accounting Integration Xero uses OAuth 2.0. The API base is https://api.xero.com/api.xro/2.0/. Endpoints include Invoices, Contacts, Payments, and BankTransactions. Connections are tenant-specific—multi-tenant apps must handle organization switching. Rate limits: 60 calls per minute per organization. ## PostgreSQL Best Practices Use connection pooling (PgBouncer) for web applications. Index foreign keys and frequently queried columns. Avoid N+1 queries—use JOINs or batch loading. For large tables, consider partitioning by date. Always use parameterized queries to prevent SQL injection. ## Redis Caching Patterns Use Redis for session storage, rate limiting, and cache-aside patterns. Set TTLs on cached data to prevent stale reads. Consider Redis Cluster for high availability. Monitor memory usage—Redis holds everything in RAM. ## HubSpot CRM Integration HubSpot offers a REST API and webhooks for real-time sync. Authentication uses private apps (access token) or OAuth for public apps. The CRM API covers contacts, companies, deals, and tickets. Use the Search API for complex queries. Webhook subscriptions require a valid endpoint that responds to verification challenges. ## Xero Accounting Integration Xero uses OAuth 2.0. The API base is https://api.xero.com/api.xro/2.0/. Endpoints include Invoices, Contacts, Payments, and BankTransactions. Connections are tenant-specific—multi-tenant apps must handle organization switching. Rate limits: 60 calls per minute per organization. ## PostgreSQL Best Practices Use connection pooling (PgBouncer) for web applications. Index foreign keys and frequently queried columns. Avoid N+1 queries—use JOINs or batch loading. For large tables, consider partitioning by date. Always use parameterized queries to prevent SQL injection. ## Redis Caching Patterns Use Redis for session storage, rate limiting, and cache-aside patterns. Set TTLs on cached data to prevent stale reads. Consider Redis Cluster for high availability. Monitor memory usage—Redis holds everything in RAM. ## HubSpot CRM Integration HubSpot offers a REST API and webhooks for real-time sync. Authentication uses private apps (access token) or OAuth for public apps. The CRM API covers contacts, companies, deals, and tickets. Use the Search API for complex queries. Webhook subscriptions require a valid endpoint that responds to verification challenges. ## Xero Accounting Integration Xero uses OAuth 2.0. The API base is https://api.xero.com/api.xro/2.0/. Endpoints include Invoices, Contacts, Payments, and BankTransactions. Connections are tenant-specific—multi-tenant apps must handle organization switching. Rate limits: 60 calls per minute per organization. ## PostgreSQL Best Practices Use connection pooling (PgBouncer) for web applications. Index foreign keys and frequently queried columns. Avoid N+1 queries—use JOINs or batch loading. For large tables, consider partitioning by date. Always use parameterized queries to prevent SQL injection. ## Redis Caching Patterns Use Redis for session storage, rate limiting, and cache-aside patterns. Set TTLs on cached data to prevent stale reads. Consider Redis Cluster for high availability. Monitor memory usage—Redis holds everything in RAM. ## HubSpot CRM Integration HubSpot offers a REST API and webhooks for real-time sync. Authentication uses private apps (access token) or OAuth for public apps. The CRM API covers contacts, companies, deals, and tickets. Use the Search API for complex queries. Webhook subscriptions require a valid endpoint that responds to verification challenges. ## Xero Accounting Integration Xero uses OAuth 2.0. The API base is https://api.xero.com/api.xro/2.0/. Endpoints include Invoices, Contacts, Payments, and BankTransactions. Connections are tenant-specific—multi-tenant apps must handle organization switching. Rate limits: 60 calls per minute per organization. ## PostgreSQL Best Practices Use connection pooling (PgBouncer) for web applications. Index foreign keys and frequently queried columns. Avoid N+1 queries—use JOINs or batch loading. For large tables, consider partitioning by date. Always use parameterized queries to prevent SQL injection. ## Redis Caching Patterns Use Redis for session storage, rate limiting, and cache-aside patterns. Set TTLs on cached data to prevent stale reads. Consider Redis Cluster for high availability. Monitor memory usage—Redis holds everything in RAM. ## HubSpot CRM Integration HubSpot offers a REST API and webhooks for real-time sync. Authentication uses private apps (access token) or OAuth for public apps. The CRM API covers contacts, companies, deals, and tickets. Use the Search API for complex queries. Webhook subscriptions require a valid endpoint that responds to verification challenges. ## Xero Accounting Integration Xero uses OAuth 2.0. The API base is https://api.xero.com/api.xro/2.0/. Endpoints include Invoices, Contacts, Payments, and BankTransactions. Connections are tenant-specific—multi-tenant apps must handle organization switching. Rate limits: 60 calls per minute per organization. ## PostgreSQL Best Practices Use connection pooling (PgBouncer) for web applications. Index foreign keys and frequently queried columns. Avoid N+1 queries—use JOINs or batch loading. For large tables, consider partitioning by date. Always use parameterized queries to prevent SQL injection. ## Redis Caching Patterns Use Redis for session storage, rate limiting, and cache-aside patterns. Set TTLs on cached data to prevent stale reads. Consider Redis Cluster for high availability. Monitor memory usage—Redis holds everything in RAM. ## HubSpot CRM Integration HubSpot offers a REST API and webhooks for real-time sync. Authentication uses private apps (access token) or OAuth for public apps. The CRM API covers contacts, companies, deals, and tickets. Use the Search API for complex queries. Webhook subscriptions require a valid endpoint that responds to verification challenges. ## Xero Accounting Integration Xero uses OAuth 2.0. The API base is https://api.xero.com/api.xro/2.0/. Endpoints include Invoices, Contacts, Payments, and BankTransactions. Connections are tenant-specific—multi-tenant apps must handle organization switching. Rate limits: 60 calls per minute per organization. ## PostgreSQL Best Practices Use connection pooling (PgBouncer) for web applications. Index foreign keys and frequently queried columns. Avoid N+1 queries—use JOINs or batch loading. For large tables, consider partitioning by date. Always use parameterized queries to prevent SQL injection. ## Redis Caching Patterns Use Redis for session storage, rate limiting, and cache-aside patterns. Set TTLs on cached data to prevent stale reads. Consider Redis Cluster for high availability. Monitor memory usage—Redis holds everything in RAM. ## HubSpot CRM Integration HubSpot offers a REST API and webhooks for real-time sync. Authentication uses private apps (access token) or OAuth for public apps. The CRM API covers contacts, companies, deals, and tickets. Use the Search API for complex queries. Webhook subscriptions require a valid endpoint that responds to verification challenges. ## Xero Accounting Integration Xero uses OAuth 2.0. The API base is https://api.xero.com/api.xro/2.0/. Endpoints include Invoices, Contacts, Payments, and BankTransactions. Connections are tenant-specific—multi-tenant apps must handle organization switching. Rate limits: 60 calls per minute per organization. ## PostgreSQL Best Practices Use connection pooling (PgBouncer) for web applications. Index foreign keys and frequently queried columns. Avoid N+1 queries—use JOINs or batch loading. For large tables, consider partitioning by date. Always use parameterized queries to prevent SQL injection. ## Redis Caching Patterns Use Redis for session storage, rate limiting, and cache-aside patterns. Set TTLs on cached data to prevent stale reads. Consider Redis Cluster for high availability. Monitor memory usage—Redis holds everything in RAM. ## HubSpot CRM Integration HubSpot offers a REST API and webhooks for real-time sync. Authentication uses private apps (access token) or OAuth for public apps. The CRM API covers contacts, companies, deals, and tickets. Use the Search API for complex queries. Webhook subscriptions require a valid endpoint that responds to verification challenges. ## Xero Accounting Integration Xero uses OAuth 2.0. The API base is https://api.xero.com/api.xro/2.0/. Endpoints include Invoices, Contacts, Payments, and BankTransactions. Connections are tenant-specific—multi-tenant apps must handle organization switching. Rate limits: 60 calls per minute per organization. ## PostgreSQL Best Practices Use connection pooling (PgBouncer) for web applications. Index foreign keys and frequently queried columns. Avoid N+1 queries—use JOINs or batch loading. For large tables, consider partitioning by date. Always use parameterized queries to prevent SQL injection. ## Redis Caching Patterns Use Redis for session storage, rate limiting, and cache-aside patterns. Set TTLs on cached data to prevent stale reads. Consider Redis Cluster for high availability. Monitor memory usage—Redis holds everything in RAM. ## HubSpot CRM Integration HubSpot offers a REST API and webhooks for real-time sync. Authentication uses private apps (access token) or OAuth for public apps. The CRM API covers contacts, companies, deals, and tickets. Use the Search API for complex queries. Webhook subscriptions require a valid endpoint that responds to verification challenges. ## Xero Accounting Integration Xero uses OAuth 2.0. The API base is https://api.xero.com/api.xro/2.0/. Endpoints include Invoices, Contacts, Payments, and BankTransactions. Connections are tenant-specific—multi-tenant apps must handle organization switching. Rate limits: 60 calls per minute per organization. ## PostgreSQL Best Practices Use connection pooling (PgBouncer) for web applications. Index foreign keys and frequently queried columns. Avoid N+1 queries—use JOINs or batch loading. For large tables, consider partitioning by date. Always use parameterized queries to prevent SQL injection. ## Redis Caching Patterns Use Redis for session storage, rate limiting, and cache-aside patterns. Set TTLs on cached data to prevent stale reads. Consider Redis Cluster for high availability. Monitor memory usage—Redis holds everything in RAM. ## HubSpot CRM Integration HubSpot offers a REST API and webhooks for real-time sync. Authentication uses private apps (access token) or OAuth for public apps. The CRM API covers contacts, companies, deals, and tickets. Use the Search API for complex queries. Webhook subscriptions require a valid endpoint that responds to verification challenges. ## Xero Accounting Integration Xero uses OAuth 2.0. The API base is https://api.xero.com/api.xro/2.0/. Endpoints include Invoices, Contacts, Payments, and BankTransactions. Connections are tenant-specific—multi-tenant apps must handle organization switching. Rate limits: 60 calls per minute per organization. ## PostgreSQL Best Practices Use connection pooling (PgBouncer) for web applications. Index foreign keys and frequently queried columns. Avoid N+1 queries—use JOINs or batch loading. For large tables, consider partitioning by date. Always use parameterized queries to prevent SQL injection. ## Redis Caching Patterns Use Redis for session storage, rate limiting, and cache-aside patterns. Set TTLs on cached data to prevent stale reads. Consider Redis Cluster for high availability. Monitor memory usage—Redis holds everything in RAM. ## HubSpot CRM Integration HubSpot offers a REST API and webhooks for real-time sync. Authentication uses private apps (access token) or OAuth for public apps. The CRM API covers contacts, companies, deals, and tickets. Use the Search API for complex queries. Webhook subscriptions require a valid endpoint that responds to verification challenges. ## Xero Accounting Integration Xero uses OAuth 2.0. The API base is https://api.xero.com/api.xro/2.0/. Endpoints include Invoices, Contacts, Payments, and BankTransactions. Connections are tenant-specific—multi-tenant apps must handle organization switching. Rate limits: 60 calls per minute per organization. ## PostgreSQL Best Practices Use connection pooling (PgBouncer) for web applications. Index foreign keys and frequently queried columns. Avoid N+1 queries—use JOINs or batch loading. For large tables, consider partitioning by date. Always use parameterized queries to prevent SQL injection. ## Redis Caching Patterns Use Redis for session storage, rate limiting, and cache-aside patterns. Set TTLs on cached data to prevent stale reads. Consider Redis Cluster for high availability. Monitor memory usage—Redis holds everything in RAM. ## HubSpot CRM Integration HubSpot offers a REST API and webhooks for real-time sync. Authentication uses private apps (access token) or OAuth for public apps. The CRM API covers contacts, companies, deals, and tickets. Use the Search API for complex queries. Webhook subscriptions require a valid endpoint that responds to verification challenges. ## Xero Accounting Integration Xero uses OAuth 2.0. The API base is https://api.xero.com/api.xro/2.0/. Endpoints include Invoices, Contacts, Payments, and BankTransactions. Connections are tenant-specific—multi-tenant apps must handle organization switching. Rate limits: 60 calls per minute per organization. ## PostgreSQL Best Practices Use connection pooling (PgBouncer) for web applications. Index foreign keys and frequently queried columns. Avoid N+1 queries—use JOINs or batch loading. For large tables, consider partitioning by date. Always use parameterized queries to prevent SQL injection. ## Redis Caching Patterns Use Redis for session storage, rate limiting, and cache-aside patterns. Set TTLs on cached data to prevent stale reads. Consider Redis Cluster for high availability. Monitor memory usage—Redis holds everything in RAM. ## HubSpot CRM Integration HubSpot offers a REST API and webhooks for real-time sync. Authentication uses private apps (access token) or OAuth for public apps. The CRM API covers contacts, companies, deals, and tickets. Use the Search API for complex queries. Webhook subscriptions require a valid endpoint that responds to verification challenges. ## Xero Accounting Integration Xero uses OAuth 2.0. The API base is https://api.xero.com/api.xro/2.0/. Endpoints include Invoices, Contacts, Payments, and BankTransactions. Connections are tenant-specific—multi-tenant apps must handle organization switching. Rate limits: 60 calls per minute per organization. ## PostgreSQL Best Practices Use connection pooling (PgBouncer) for web applications. Index foreign keys and frequently queried columns. Avoid N+1 queries—use JOINs or batch loading. For large tables, consider partitioning by date. Always use parameterized queries to prevent SQL injection. ## Redis Caching Patterns Use Redis for session storage, rate limiting, and cache-aside patterns. Set TTLs on cached data to prevent stale reads. Consider Redis Cluster for high availability. Monitor memory usage—Redis holds everything in RAM. ## HubSpot CRM Integration HubSpot offers a REST API and webhooks for real-time sync. Authentication uses private apps (access token) or OAuth for public apps. The CRM API covers contacts, companies, deals, and tickets. Use the Search API for complex queries. Webhook subscriptions require a valid endpoint that responds to verification challenges. ## Xero Accounting Integration Xero uses OAuth 2.0. The API base is https://api.xero.com/api.xro/2.0/. Endpoints include Invoices, Contacts, Payments, and BankTransactions. Connections are tenant-specific—multi-tenant apps must handle organization switching. Rate limits: 60 calls per minute per organization. ## PostgreSQL Best Practices Use connection pooling (PgBouncer) for web applications. Index foreign keys and frequently queried columns. Avoid N+1 queries—use JOINs or batch loading. For large tables, consider partitioning by date. Always use parameterized queries to prevent SQL injection. ## Redis Caching Patterns Use Redis for session storage, rate limiting, and cache-aside patterns. Set TTLs on cached data to prevent stale reads. Consider Redis Cluster for high availability. Monitor memory usage—Redis holds everything in RAM. ## HubSpot CRM Integration HubSpot offers a REST API and webhooks for real-time sync. Authentication uses private apps (access token) or OAuth for public apps. The CRM API covers contacts, companies, deals, and tickets. Use the Search API for complex queries. Webhook subscriptions require a valid endpoint that responds to verification challenges. ## Xero Accounting Integration Xero uses OAuth 2.0. The API base is https://api.xero.com/api.xro/2.0/. Endpoints include Invoices, Contacts, Payments, and BankTransactions. Connections are tenant-specific—multi-tenant apps must handle organization switching. Rate limits: 60 calls per minute per organization. ## PostgreSQL Best Practices Use connection pooling (PgBouncer) for web applications. Index foreign keys and frequently queried columns. Avoid N+1 queries—use JOINs or batch loading. For large tables, consider partitioning by date. Always use parameterized queries to prevent SQL injection. ## Redis Caching Patterns Use Redis for session storage, rate limiting, and cache-aside patterns. Set TTLs on cached data to prevent stale reads. Consider Redis Cluster for high availability. Monitor memory usage—Redis holds everything in RAM. ## HubSpot CRM Integration HubSpot offers a REST API and webhooks for real-time sync. Authentication uses private apps (access token) or OAuth for public apps. The CRM API covers contacts, companies, deals, and tickets. Use the Search API for complex queries. Webhook subscriptions require a valid endpoint that responds to verification challenges. ## Xero Accounting Integration Xero uses OAuth 2.0. The API base is https://api.xero.com/api.xro/2.0/. Endpoints include Invoices, Contacts, Payments, and BankTransactions. Connections are tenant-specific—multi-tenant apps must handle organization switching. Rate limits: 60 calls per minute per organization. ## PostgreSQL Best Practices Use connection pooling (PgBouncer) for web applications. Index foreign keys and frequently queried columns. Avoid N+1 queries—use JOINs or batch loading. For large tables, consider partitioning by date. Always use parameterized queries to prevent SQL injection. ## Redis Caching Patterns Use Redis for session storage, rate limiting, and cache-aside patterns. Set TTLs on cached data to prevent stale reads. Consider Redis Cluster for high availability. Monitor memory usage—Redis holds everything in RAM. ## HubSpot CRM Integration HubSpot offers a REST API and webhooks for real-time sync. Authentication uses private apps (access token) or OAuth for public apps. The CRM API covers contacts, companies, deals, and tickets. Use the Search API for complex queries. Webhook subscriptions require a valid endpoint that responds to verification challenges. ## Xero Accounting Integration Xero uses OAuth 2.0. The API base is https://api.xero.com/api.xro/2.0/. Endpoints include Invoices, Contacts, Payments, and BankTransactions. Connections are tenant-specific—multi-tenant apps must handle organization switching. Rate limits: 60 calls per minute per organization. ## PostgreSQL Best Practices Use connection pooling (PgBouncer) for web applications. Index foreign keys and frequently queried columns. Avoid N+1 queries—use JOINs or batch loading. For large tables, consider partitioning by date. Always use parameterized queries to prevent SQL injection. ## Redis Caching Patterns Use Redis for session storage, rate limiting, and cache-aside patterns. Set TTLs on cached data to prevent stale reads. Consider Redis Cluster for high availability. Monitor memory usage—Redis holds everything in RAM. ## HubSpot CRM Integration HubSpot offers a REST API and webhooks for real-time sync. Authentication uses private apps (access token) or OAuth for public apps. The CRM API covers contacts, companies, deals, and tickets. Use the Search API for complex queries. Webhook subscriptions require a valid endpoint that responds to verification challenges. ## Xero Accounting Integration Xero uses OAuth 2.0. The API base is https://api.xero.com/api.xro/2.0/. Endpoints include Invoices, Contacts, Payments, and BankTransactions. Connections are tenant-specific—multi-tenant apps must handle organization switching. Rate limits: 60 calls per minute per organization. ## PostgreSQL Best Practices Use connection pooling (PgBouncer) for web applications. Index foreign keys and frequently queried columns. Avoid N+1 queries—use JOINs or batch loading. For large tables, consider partitioning by date. Always use parameterized queries to prevent SQL injection. ## Redis Caching Patterns Use Redis for session storage, rate limiting, and cache-aside patterns. Set TTLs on cached data to prevent stale reads. Consider Redis Cluster for high availability. Monitor memory usage—Redis holds everything in RAM. ## HubSpot CRM Integration HubSpot offers a REST API and webhooks for real-time sync. Authentication uses private apps (access token) or OAuth for public apps. The CRM API covers contacts, companies, deals, and tickets. Use the Search API for complex queries. Webhook subscriptions require a valid endpoint that responds to verification challenges. ## Xero Accounting Integration Xero uses OAuth 2.0. The API base is https://api.xero.com/api.xro/2.0/. Endpoints include Invoices, Contacts, Payments, and BankTransactions. Connections are tenant-specific—multi-tenant apps must handle organization switching. Rate limits: 60 calls per minute per organization. ## PostgreSQL Best Practices Use connection pooling (PgBouncer) for web applications. Index foreign keys and frequently queried columns. Avoid N+1 queries—use JOINs or batch loading. For large tables, consider partitioning by date. Always use parameterized queries to prevent SQL injection. ## Redis Caching Patterns Use Redis for session storage, rate limiting, and cache-aside patterns. Set TTLs on cached data to prevent stale reads. Consider Redis Cluster for high availability. Monitor memory usage—Redis holds everything in RAM. ## HubSpot CRM Integration HubSpot offers a REST API and webhooks for real-time sync. Authentication uses private apps (access token) or OAuth for public apps. The CRM API covers contacts, companies, deals, and tickets. Use the Search API for complex queries. Webhook subscriptions require a valid endpoint that responds to verification challenges. ## Xero Accounting Integration Xero uses OAuth 2.0. The API base is https://api.xero.com/api.xro/2.0/. Endpoints include Invoices, Contacts, Payments, and BankTransactions. Connections are tenant-specific—multi-tenant apps must handle organization switching. Rate limits: 60 calls per minute per organization. ## PostgreSQL Best Practices Use connection pooling (PgBouncer) for web applications. Index foreign keys and frequently queried columns. Avoid N+1 queries—use JOINs or batch loading. For large tables, consider partitioning by date. Always use parameterized queries to prevent SQL injection. ## Redis Caching Patterns Use Redis for session storage, rate limiting, and cache-aside patterns. Set TTLs on cached data to prevent stale reads. Consider Redis Cluster for high availability. Monitor memory usage—Redis holds everything in RAM. ## HubSpot CRM Integration HubSpot offers a REST API and webhooks for real-time sync. Authentication uses private apps (access token) or OAuth for public apps. The CRM API covers contacts, companies, deals, and tickets. Use the Search API for complex queries. Webhook subscriptions require a valid endpoint that responds to verification challenges. ## Xero Accounting Integration Xero uses OAuth 2.0. The API base is https://api.xero.com/api.xro/2.0/. Endpoints include Invoices, Contacts, Payments, and BankTransactions. Connections are tenant-specific—multi-tenant apps must handle organization switching. Rate limits: 60 calls per minute per organization. ## PostgreSQL Best Practices Use connection pooling (PgBouncer) for web applications. Index foreign keys and frequently queried columns. Avoid N+1 queries—use JOINs or batch loading. For large tables, consider partitioning by date. Always use parameterized queries to prevent SQL injection. ## Redis Caching Patterns Use Redis for session storage, rate limiting, and cache-aside patterns. Set TTLs on cached data to prevent stale reads. Consider Redis Cluster for high availability. Monitor memory usage—Redis holds everything in RAM. ## HubSpot CRM Integration HubSpot offers a REST API and webhooks for real-time sync. Authentication uses private apps (access token) or OAuth for public apps. The CRM API covers contacts, companies, deals, and tickets. Use the Search API for complex queries. Webhook subscriptions require a valid endpoint that responds to verification challenges. ## Xero Accounting Integration Xero uses OAuth 2.0. The API base is https://api.xero.com/api.xro/2.0/. Endpoints include Invoices, Contacts, Payments, and BankTransactions. Connections are tenant-specific—multi-tenant apps must handle organization switching. Rate limits: 60 calls per minute per organization. ## PostgreSQL Best Practices Use connection pooling (PgBouncer) for web applications. Index foreign keys and frequently queried columns. Avoid N+1 queries—use JOINs or batch loading. For large tables, consider partitioning by date. Always use parameterized queries to prevent SQL injection. ## Redis Caching Patterns Use Redis for session storage, rate limiting, and cache-aside patterns. Set TTLs on cached data to prevent stale reads. Consider Redis Cluster for high availability. Monitor memory usage—Redis holds everything in RAM. ## HubSpot CRM Integration HubSpot offers a REST API and webhooks for real-time sync. Authentication uses private apps (access token) or OAuth for public apps. The CRM API covers contacts, companies, deals, and tickets. Use the Search API for complex queries. Webhook subscriptions require a valid endpoint that responds to verification challenges. ## Xero Accounting Integration Xero uses OAuth 2.0. The API base is https://api.xero.com/api.xro/2.0/. Endpoints include Invoices, Contacts, Payments, and BankTransactions. Connections are tenant-specific—multi-tenant apps must handle organization switching. Rate limits: 60 calls per minute per organization. ## PostgreSQL Best Practices Use connection pooling (PgBouncer) for web applications. Index foreign keys and frequently queried columns. Avoid N+1 queries—use JOINs or batch loading. For large tables, consider partitioning by date. Always use parameterized queries to prevent SQL injection. ## Redis Caching Patterns Use Redis for session storage, rate limiting, and cache-aside patterns. Set TTLs on cached data to prevent stale reads. Consider Redis Cluster for high availability. Monitor memory usage—Redis holds everything in RAM. ## HubSpot CRM Integration HubSpot offers a REST API and webhooks for real-time sync. Authentication uses private apps (access token) or OAuth for public apps. The CRM API covers contacts, companies, deals, and tickets. Use the Search API for complex queries. Webhook subscriptions require a valid endpoint that responds to verification challenges. ## Xero Accounting Integration Xero uses OAuth 2.0. The API base is https://api.xero.com/api.xro/2.0/. Endpoints include Invoices, Contacts, Payments, and BankTransactions. Connections are tenant-specific—multi-tenant apps must handle organization switching. Rate limits: 60 calls per minute per organization. ## PostgreSQL Best Practices Use connection pooling (PgBouncer) for web applications. Index foreign keys and frequently queried columns. Avoid N+1 queries—use JOINs or batch loading. For large tables, consider partitioning by date. Always use parameterized queries to prevent SQL injection. ## Redis Caching Patterns Use Redis for session storage, rate limiting, and cache-aside patterns. Set TTLs on cached data to prevent stale reads. Consider Redis Cluster for high availability. Monitor memory usage—Redis holds everything in RAM. ## HubSpot CRM Integration HubSpot offers a REST API and webhooks for real-time sync. Authentication uses private apps (access token) or OAuth for public apps. The CRM API covers contacts, companies, deals, and tickets. Use the Search API for complex queries. Webhook subscriptions require a valid endpoint that responds to verification challenges. ## Xero Accounting Integration Xero uses OAuth 2.0. The API base is https://api.xero.com/api.xro/2.0/. Endpoints include Invoices, Contacts, Payments, and BankTransactions. Connections are tenant-specific—multi-tenant apps must handle organization switching. Rate limits: 60 calls per minute per organization. ## PostgreSQL Best Practices Use connection pooling (PgBouncer) for web applications. Index foreign keys and frequently queried columns. Avoid N+1 queries—use JOINs or batch loading. For large tables, consider partitioning by date. Always use parameterized queries to prevent SQL injection. ## Redis Caching Patterns Use Redis for session storage, rate limiting, and cache-aside patterns. Set TTLs on cached data to prevent stale reads. Consider Redis Cluster for high availability. Monitor memory usage—Redis holds everything in RAM. ## HubSpot CRM Integration HubSpot offers a REST API and webhooks for real-time sync. Authentication uses private apps (access token) or OAuth for public apps. The CRM API covers contacts, companies, deals, and tickets. Use the Search API for complex queries. Webhook subscriptions require a valid endpoint that responds to verification challenges. ## Xero Accounting Integration Xero uses OAuth 2.0. The API base is https://api.xero.com/api.xro/2.0/. Endpoints include Invoices, Contacts, Payments, and BankTransactions. Connections are tenant-specific—multi-tenant apps must handle organization switching. Rate limits: 60 calls per minute per organization. ## PostgreSQL Best Practices Use connection pooling (PgBouncer) for web applications. Index foreign keys and frequently queried columns. Avoid N+1 queries—use JOINs or batch loading. For large tables, consider partitioning by date. Always use parameterized queries to prevent SQL injection. ## Redis Caching Patterns Use Redis for session storage, rate limiting, and cache-aside patterns. Set TTLs on cached data to prevent stale reads. Consider Redis Cluster for high availability. Monitor memory usage—Redis holds everything in RAM. ## HubSpot CRM Integration HubSpot offers a REST API and webhooks for real-time sync. Authentication uses private apps (access token) or OAuth for public apps. The CRM API covers contacts, companies, deals, and tickets. Use the Search API for complex queries. Webhook subscriptions require a valid endpoint that responds to verification challenges. ## Xero Accounting Integration Xero uses OAuth 2.0. The API base is https://api.xero.com/api.xro/2.0/. Endpoints include Invoices, Contacts, Payments, and BankTransactions. Connections are tenant-specific—multi-tenant apps must handle organization switching. Rate limits: 60 calls per minute per organization. ## PostgreSQL Best Practices Use connection pooling (PgBouncer) for web applications. Index foreign keys and frequently queried columns. Avoid N+1 queries—use JOINs or batch loading. For large tables, consider partitioning by date. Always use parameterized queries to prevent SQL injection. ## Redis Caching Patterns Use Redis for session storage, rate limiting, and cache-aside patterns. Set TTLs on cached data to prevent stale reads. Consider Redis Cluster for high availability. Monitor memory usage—Redis holds everything in RAM. ## HubSpot CRM Integration HubSpot offers a REST API and webhooks for real-time sync. Authentication uses private apps (access token) or OAuth for public apps. The CRM API covers contacts, companies, deals, and tickets. Use the Search API for complex queries. Webhook subscriptions require a valid endpoint that responds to verification challenges. ## Xero Accounting Integration Xero uses OAuth 2.0. The API base is https://api.xero.com/api.xro/2.0/. Endpoints include Invoices, Contacts, Payments, and BankTransactions. Connections are tenant-specific—multi-tenant apps must handle organization switching. Rate limits: 60 calls per minute per organization. ## PostgreSQL Best Practices Use connection pooling (PgBouncer) for web applications. Index foreign keys and frequently queried columns. Avoid N+1 queries—use JOINs or batch loading. For large tables, consider partitioning by date. Always use parameterized queries to prevent SQL injection. ## Redis Caching Patterns Use Redis for session storage, rate limiting, and cache-aside patterns. Set TTLs on cached data to prevent stale reads. Consider Redis Cluster for high availability. Monitor memory usage—Redis holds everything in RAM. ## HubSpot CRM Integration HubSpot offers a REST API and webhooks for real-time sync. Authentication uses private apps (access token) or OAuth for public apps. The CRM API covers contacts, companies, deals, and tickets. Use the Search API for complex queries. Webhook subscriptions require a valid endpoint that responds to verification challenges. ## Xero Accounting Integration Xero uses OAuth 2.0. The API base is https://api.xero.com/api.xro/2.0/. Endpoints include Invoices, Contacts, Payments, and BankTransactions. Connections are tenant-specific—multi-tenant apps must handle organization switching. Rate limits: 60 calls per minute per organization. ## PostgreSQL Best Practices Use connection pooling (PgBouncer) for web applications. Index foreign keys and frequently queried columns. Avoid N+1 queries—use JOINs or batch loading. For large tables, consider partitioning by date. Always use parameterized queries to prevent SQL injection. ## Redis Caching Patterns Use Redis for session storage, rate limiting, and cache-aside patterns. Set TTLs on cached data to prevent stale reads. Consider Redis Cluster for high availability. Monitor memory usage—Redis holds everything in RAM. ## HubSpot CRM Integration HubSpot offers a REST API and webhooks for real-time sync. Authentication uses private apps (access token) or OAuth for public apps. The CRM API covers contacts, companies, deals, and tickets. Use the Search API for complex queries. Webhook subscriptions require a valid endpoint that responds to verification challenges. ## Xero Accounting Integration Xero uses OAuth 2.0. The API base is https://api.xero.com/api.xro/2.0/. Endpoints include Invoices, Contacts, Payments, and BankTransactions. Connections are tenant-specific—multi-tenant apps must handle organization switching. Rate limits: 60 calls per minute per organization. ## PostgreSQL Best Practices Use connection pooling (PgBouncer) for web applications. Index foreign keys and frequently queried columns. Avoid N+1 queries—use JOINs or batch loading. For large tables, consider partitioning by date. Always use parameterized queries to prevent SQL injection. ## Redis Caching Patterns Use Redis for session storage, rate limiting, and cache-aside patterns. Set TTLs on cached data to prevent stale reads. Consider Redis Cluster for high availability. Monitor memory usage—Redis holds everything in RAM. ## HubSpot CRM Integration HubSpot offers a REST API and webhooks for real-time sync. Authentication uses private apps (access token) or OAuth for public apps. The CRM API covers contacts, companies, deals, and tickets. Use the Search API for complex queries. Webhook subscriptions require a valid endpoint that responds to verification challenges. ## Xero Accounting Integration Xero uses OAuth 2.0. The API base is https://api.xero.com/api.xro/2.0/. Endpoints include Invoices, Contacts, Payments, and BankTransactions. Connections are tenant-specific—multi-tenant apps must handle organization switching. Rate limits: 60 calls per minute per organization. ## PostgreSQL Best Practices Use connection pooling (PgBouncer) for web applications. Index foreign keys and frequently queried columns. Avoid N+1 queries—use JOINs or batch loading. For large tables, consider partitioning by date. Always use parameterized queries to prevent SQL injection. ## Redis Caching Patterns Use Redis for session storage, rate limiting, and cache-aside patterns. Set TTLs on cached data to prevent stale reads. Consider Redis Cluster for high availability. Monitor memory usage—Redis holds everything in RAM. ## HubSpot CRM Integration HubSpot offers a REST API and webhooks for real-time sync. Authentication uses private apps (access token) or OAuth for public apps. The CRM API covers contacts, companies, deals, and tickets. Use the Search API for complex queries. Webhook subscriptions require a valid endpoint that responds to verification challenges. ## Xero Accounting Integration Xero uses OAuth 2.0. The API base is https://api.xero.com/api.xro/2.0/. Endpoints include Invoices, Contacts, Payments, and BankTransactions. Connections are tenant-specific—multi-tenant apps must handle organization switching. Rate limits: 60 calls per minute per organization. ## PostgreSQL Best Practices Use connection pooling (PgBouncer) for web applications. Index foreign keys and frequently queried columns. Avoid N+1 queries—use JOINs or batch loading. For large tables, consider partitioning by date. Always use parameterized queries to prevent SQL injection. ## Redis Caching Patterns Use Redis for session storage, rate limiting, and cache-aside patterns. Set TTLs on cached data to prevent stale reads. Consider Redis Cluster for high availability. Monitor memory usage—Redis holds everything in RAM. ## HubSpot CRM Integration HubSpot offers a REST API and webhooks for real-time sync. Authentication uses private apps (access token) or OAuth for public apps. The CRM API covers contacts, companies, deals, and tickets. Use the Search API for complex queries. Webhook subscriptions require a valid endpoint that responds to verification challenges. ## Xero Accounting Integration Xero uses OAuth 2.0. The API base is https://api.xero.com/api.xro/2.0/. Endpoints include Invoices, Contacts, Payments, and BankTransactions. Connections are tenant-specific—multi-tenant apps must handle organization switching. Rate limits: 60 calls per minute per organization. ## PostgreSQL Best Practices Use connection pooling (PgBouncer) for web applications. Index foreign keys and frequently queried columns. Avoid N+1 queries—use JOINs or batch loading. For large tables, consider partitioning by date. Always use parameterized queries to prevent SQL injection. ## Redis Caching Patterns Use Redis for session storage, rate limiting, and cache-aside patterns. Set TTLs on cached data to prevent stale reads. Consider Redis Cluster for high availability. Monitor memory usage—Redis holds everything in RAM. ## HubSpot CRM Integration HubSpot offers a REST API and webhooks for real-time sync. Authentication uses private apps (access token) or OAuth for public apps. The CRM API covers contacts, companies, deals, and tickets. Use the Search API for complex queries. Webhook subscriptions require a valid endpoint that responds to verification challenges. ## Xero Accounting Integration Xero uses OAuth 2.0. The API base is https://api.xero.com/api.xro/2.0/. Endpoints include Invoices, Contacts, Payments, and BankTransactions. Connections are tenant-specific—multi-tenant apps must handle organization switching. Rate limits: 60 calls per minute per organization. ## PostgreSQL Best Practices Use connection pooling (PgBouncer) for web applications. Index foreign keys and frequently queried columns. Avoid N+1 queries—use JOINs or batch loading. For large tables, consider partitioning by date. Always use parameterized queries to prevent SQL injection. ## Redis Caching Patterns Use Redis for session storage, rate limiting, and cache-aside patterns. Set TTLs on cached data to prevent stale reads. Consider Redis Cluster for high availability. Monitor memory usage—Redis holds everything in RAM. ## HubSpot CRM Integration HubSpot offers a REST API and webhooks for real-time sync. Authentication uses private apps (access token) or OAuth for public apps. The CRM API covers contacts, companies, deals, and tickets. Use the Search API for complex queries. Webhook subscriptions require a valid endpoint that responds to verification challenges. ## Xero Accounting Integration Xero uses OAuth 2.0. The API base is https://api.xero.com/api.xro/2.0/. Endpoints include Invoices, Contacts, Payments, and BankTransactions. Connections are tenant-specific—multi-tenant apps must handle organization switching. Rate limits: 60 calls per minute per organization. ## PostgreSQL Best Practices Use connection pooling (PgBouncer) for web applications. Index foreign keys and frequently queried columns. Avoid N+1 queries—use JOINs or batch loading. For large tables, consider partitioning by date. Always use parameterized queries to prevent SQL injection. ## Redis Caching Patterns Use Redis for session storage, rate limiting, and cache-aside patterns. Set TTLs on cached data to prevent stale reads. Consider Redis Cluster for high availability. Monitor memory usage—Redis holds everything in RAM. ## HubSpot CRM Integration HubSpot offers a REST API and webhooks for real-time sync. Authentication uses private apps (access token) or OAuth for public apps. The CRM API covers contacts, companies, deals, and tickets. Use the Search API for complex queries. Webhook subscriptions require a valid endpoint that responds to verification challenges. ## Xero Accounting Integration Xero uses OAuth 2.0. The API base is https://api.xero.com/api.xro/2.0/. Endpoints include Invoices, Contacts, Payments, and BankTransactions. Connections are tenant-specific—multi-tenant apps must handle organization switching. Rate limits: 60 calls per minute per organization. ## PostgreSQL Best Practices Use connection pooling (PgBouncer) for web applications. Index foreign keys and frequently queried columns. Avoid N+1 queries—use JOINs or batch loading. For large tables, consider partitioning by date. Always use parameterized queries to prevent SQL injection. ## Redis Caching Patterns Use Redis for session storage, rate limiting, and cache-aside patterns. Set TTLs on cached data to prevent stale reads. Consider Redis Cluster for high availability. Monitor memory usage—Redis holds everything in RAM. ## HubSpot CRM Integration HubSpot offers a REST API and webhooks for real-time sync. Authentication uses private apps (access token) or OAuth for public apps. The CRM API covers contacts, companies, deals, and tickets. Use the Search API for complex queries. Webhook subscriptions require a valid endpoint that responds to verification challenges. ## Xero Accounting Integration Xero uses OAuth 2.0. The API base is https://api.xero.com/api.xro/2.0/. Endpoints include Invoices, Contacts, Payments, and BankTransactions. Connections are tenant-specific—multi-tenant apps must handle organization switching. Rate limits: 60 calls per minute per organization. ## PostgreSQL Best Practices Use connection pooling (PgBouncer) for web applications. Index foreign keys and frequently queried columns. Avoid N+1 queries—use JOINs or batch loading. For large tables, consider partitioning by date. Always use parameterized queries to prevent SQL injection. ## Redis Caching Patterns Use Redis for session storage, rate limiting, and cache-aside patterns. Set TTLs on cached data to prevent stale reads. Consider Redis Cluster for high availability. Monitor memory usage—Redis holds everything in RAM. ## HubSpot CRM Integration HubSpot offers a REST API and webhooks for real-time sync. Authentication uses private apps (access token) or OAuth for public apps. The CRM API covers contacts, companies, deals, and tickets. Use the Search API for complex queries. Webhook subscriptions require a valid endpoint that responds to verification challenges. ## Xero Accounting Integration Xero uses OAuth 2.0. The API base is https://api.xero.com/api.xro/2.0/. Endpoints include Invoices, Contacts, Payments, and BankTransactions. Connections are tenant-specific—multi-tenant apps must handle organization switching. Rate limits: 60 calls per minute per organization. ## PostgreSQL Best Practices Use connection pooling (PgBouncer) for web applications. Index foreign keys and frequently queried columns. Avoid N+1 queries—use JOINs or batch loading. For large tables, consider partitioning by date. Always use parameterized queries to prevent SQL injection. ## Redis Caching Patterns Use Redis for session storage, rate limiting, and cache-aside patterns. Set TTLs on cached data to prevent stale reads. Consider Redis Cluster for high availability. Monitor memory usage—Redis holds everything in RAM. ## HubSpot CRM Integration HubSpot offers a REST API and webhooks for real-time sync. Authentication uses private apps (access token) or OAuth for public apps. The CRM API covers contacts, companies, deals, and tickets. Use the Search API for complex queries. Webhook subscriptions require a valid endpoint that responds to verification challenges. ## Xero Accounting Integration Xero uses OAuth 2.0. The API base is https://api.xero.com/api.xro/2.0/. Endpoints include Invoices, Contacts, Payments, and BankTransactions. Connections are tenant-specific—multi-tenant apps must handle organization switching. Rate limits: 60 calls per minute per organization. ## PostgreSQL Best Practices Use connection pooling (PgBouncer) for web applications. Index foreign keys and frequently queried columns. Avoid N+1 queries—use JOINs or batch loading. For large tables, consider partitioning by date. Always use parameterized queries to prevent SQL injection. ## Redis Caching Patterns Use Redis for session storage, rate limiting, and cache-aside patterns. Set TTLs on cached data to prevent stale reads. Consider Redis Cluster for high availability. Monitor memory usage—Redis holds everything in RAM. ## HubSpot CRM Integration HubSpot offers a REST API and webhooks for real-time sync. Authentication uses private apps (access token) or OAuth for public apps. The CRM API covers contacts, companies, deals, and tickets. Use the Search API for complex queries. Webhook subscriptions require a valid endpoint that responds to verification challenges. ## Xero Accounting Integration Xero uses OAuth 2.0. The API base is https://api.xero.com/api.xro/2.0/. Endpoints include Invoices, Contacts, Payments, and BankTransactions. Connections are tenant-specific—multi-tenant apps must handle organization switching. Rate limits: 60 calls per minute per organization. ## PostgreSQL Best Practices Use connection pooling (PgBouncer) for web applications. Index foreign keys and frequently queried columns. Avoid N+1 queries—use JOINs or batch loading. For large tables, consider partitioning by date. Always use parameterized queries to prevent SQL injection. ## Redis Caching Patterns Use Redis for session storage, rate limiting, and cache-aside patterns. Set TTLs on cached data to prevent stale reads. Consider Redis Cluster for high availability. Monitor memory usage—Redis holds everything in RAM. ## HubSpot CRM Integration HubSpot offers a REST API and webhooks for real-time sync. Authentication uses private apps (access token) or OAuth for public apps. The CRM API covers contacts, companies, deals, and tickets. Use the Search API for complex queries. Webhook subscriptions require a valid endpoint that responds to verification challenges. ## Xero Accounting Integration Xero uses OAuth 2.0. The API base is https://api.xero.com/api.xro/2.0/. Endpoints include Invoices, Contacts, Payments, and BankTransactions. Connections are tenant-specific—multi-tenant apps must handle organization switching. Rate limits: 60 calls per minute per organization. ## PostgreSQL Best Practices Use connection pooling (PgBouncer) for web applications. Index foreign keys and frequently queried columns. Avoid N+1 queries—use JOINs or batch loading. For large tables, consider partitioning by date. Always use parameterized queries to prevent SQL injection. ## Redis Caching Patterns Use Redis for session storage, rate limiting, and cache-aside patterns. Set TTLs on cached data to prevent stale reads. Consider Redis Cluster for high availability. Monitor memory usage—Redis holds everything in RAM. ## HubSpot CRM Integration HubSpot offers a REST API and webhooks for real-time sync. Authentication uses private apps (access token) or OAuth for public apps. The CRM API covers contacts, companies, deals, and tickets. Use the Search API for complex queries. Webhook subscriptions require a valid endpoint that responds to verification challenges. ## Xero Accounting Integration Xero uses OAuth 2.0. The API base is https://api.xero.com/api.xro/2.0/. Endpoints include Invoices, Contacts, Payments, and BankTransactions. Connections are tenant-specific—multi-tenant apps must handle organization switching. Rate limits: 60 calls per minute per organization. ## PostgreSQL Best Practices Use connection pooling (PgBouncer) for web applications. Index foreign keys and frequently queried columns. Avoid N+1 queries—use JOINs or batch loading. For large tables, consider partitioning by date. Always use parameterized queries to prevent SQL injection. ## Redis Caching Patterns Use Redis for session storage, rate limiting, and cache-aside patterns. Set TTLs on cached data to prevent stale reads. Consider Redis Cluster for high availability. Monitor memory usage—Redis holds everything in RAM. ## HubSpot CRM Integration HubSpot offers a REST API and webhooks for real-time sync. Authentication uses private apps (access token) or OAuth for public apps. The CRM API covers contacts, companies, deals, and tickets. Use the Search API for complex queries. Webhook subscriptions require a valid endpoint that responds to verification challenges. ## Xero Accounting Integration Xero uses OAuth 2.0. The API base is https://api.xero.com/api.xro/2.0/. Endpoints include Invoices, Contacts, Payments, and BankTransactions. Connections are tenant-specific—multi-tenant apps must handle organization switching. Rate limits: 60 calls per minute per organization. ## PostgreSQL Best Practices Use connection pooling (PgBouncer) for web applications. Index foreign keys and frequently queried columns. Avoid N+1 queries—use JOINs or batch loading. For large tables, consider partitioning by date. Always use parameterized queries to prevent SQL injection. ## Redis Caching Patterns Use Redis for session storage, rate limiting, and cache-aside patterns. Set TTLs on cached data to prevent stale reads. Consider Redis Cluster for high availability. Monitor memory usage—Redis holds everything in RAM. ## HubSpot CRM Integration HubSpot offers a REST API and webhooks for real-time sync. Authentication uses private apps (access token) or OAuth for public apps. The CRM API covers contacts, companies, deals, and tickets. Use the Search API for complex queries. Webhook subscriptions require a valid endpoint that responds to verification challenges. ## Xero Accounting Integration Xero uses OAuth 2.0. The API base is https://api.xero.com/api.xro/2.0/. Endpoints include Invoices, Contacts, Payments, and BankTransactions. Connections are tenant-specific—multi-tenant apps must handle organization switching. Rate limits: 60 calls per minute per organization. ## PostgreSQL Best Practices Use connection pooling (PgBouncer) for web applications. Index foreign keys and frequently queried columns. Avoid N+1 queries—use JOINs or batch loading. For large tables, consider partitioning by date. Always use parameterized queries to prevent SQL injection. ## Redis Caching Patterns Use Redis for session storage, rate limiting, and cache-aside patterns. Set TTLs on cached data to prevent stale reads. Consider Redis Cluster for high availability. Monitor memory usage—Redis holds everything in RAM. ## HubSpot CRM Integration HubSpot offers a REST API and webhooks for real-time sync. Authentication uses private apps (access token) or OAuth for public apps. The CRM API covers contacts, companies, deals, and tickets. Use the Search API for complex queries. Webhook subscriptions require a valid endpoint that responds to verification challenges. ## Xero Accounting Integration Xero uses OAuth 2.0. The API base is https://api.xero.com/api.xro/2.0/. Endpoints include Invoices, Contacts, Payments, and BankTransactions. Connections are tenant-specific—multi-tenant apps must handle organization switching. Rate limits: 60 calls per minute per organization. ## PostgreSQL Best Practices Use connection pooling (PgBouncer) for web applications. Index foreign keys and frequently queried columns. Avoid N+1 queries—use JOINs or batch loading. For large tables, consider partitioning by date. Always use parameterized queries to prevent SQL injection. ## Redis Caching Patterns Use Redis for session storage, rate limiting, and cache-aside patterns. Set TTLs on cached data to prevent stale reads. Consider Redis Cluster for high availability. Monitor memory usage—Redis holds everything in RAM. ## HubSpot CRM Integration HubSpot offers a REST API and webhooks for real-time sync. Authentication uses private apps (access token) or OAuth for public apps. The CRM API covers contacts, companies, deals, and tickets. Use the Search API for complex queries. Webhook subscriptions require a valid endpoint that responds to verification challenges. ## Xero Accounting Integration Xero uses OAuth 2.0. The API base is https://api.xero.com/api.xro/2.0/. Endpoints include Invoices, Contacts, Payments, and BankTransactions. Connections are tenant-specific—multi-tenant apps must handle organization switching. Rate limits: 60 calls per minute per organization. ## PostgreSQL Best Practices Use connection pooling (PgBouncer) for web applications. Index foreign keys and frequently queried columns. Avoid N+1 queries—use JOINs or batch loading. For large tables, consider partitioning by date. Always use parameterized queries to prevent SQL injection. ## Redis Caching Patterns Use Redis for session storage, rate limiting, and cache-aside patterns. Set TTLs on cached data to prevent stale reads. Consider Redis Cluster for high availability. Monitor memory usage—Redis holds everything in RAM. ## HubSpot CRM Integration HubSpot offers a REST API and webhooks for real-time sync. Authentication uses private apps (access token) or OAuth for public apps. The CRM API covers contacts, companies, deals, and tickets. Use the Search API for complex queries. Webhook subscriptions require a valid endpoint that responds to verification challenges. ## Xero Accounting Integration Xero uses OAuth 2.0. The API base is https://api.xero.com/api.xro/2.0/. Endpoints include Invoices, Contacts, Payments, and BankTransactions. Connections are tenant-specific—multi-tenant apps must handle organization switching. Rate limits: 60 calls per minute per organization. ## PostgreSQL Best Practices Use connection pooling (PgBouncer) for web applications. Index foreign keys and frequently queried columns. Avoid N+1 queries—use JOINs or batch loading. For large tables, consider partitioning by date. Always use parameterized queries to prevent SQL injection. ## Redis Caching Patterns Use Redis for session storage, rate limiting, and cache-aside patterns. Set TTLs on cached data to prevent stale reads. Consider Redis Cluster for high availability. Monitor memory usage—Redis holds everything in RAM. ## HubSpot CRM Integration HubSpot offers a REST API and webhooks for real-time sync. Authentication uses private apps (access token) or OAuth for public apps. The CRM API covers contacts, companies, deals, and tickets. Use the Search API for complex queries. Webhook subscriptions require a valid endpoint that responds to verification challenges. ## Xero Accounting Integration Xero uses OAuth 2.0. The API base is https://api.xero.com/api.xro/2.0/. Endpoints include Invoices, Contacts, Payments, and BankTransactions. Connections are tenant-specific—multi-tenant apps must handle organization switching. Rate limits: 60 calls per minute per organization. ## PostgreSQL Best Practices Use connection pooling (PgBouncer) for web applications. Index foreign keys and frequently queried columns. Avoid N+1 queries—use JOINs or batch loading. For large tables, consider partitioning by date. Always use parameterized queries to prevent SQL injection. ## Redis Caching Patterns Use Redis for session storage, rate limiting, and cache-aside patterns. Set TTLs on cached data to prevent stale reads. Consider Redis Cluster for high availability. Monitor memory usage—Redis holds everything in RAM. ## HubSpot CRM Integration HubSpot offers a REST API and webhooks for real-time sync. Authentication uses private apps (access token) or OAuth for public apps. The CRM API covers contacts, companies, deals, and tickets. Use the Search API for complex queries. Webhook subscriptions require a valid endpoint that responds to verification challenges. ## Xero Accounting Integration Xero uses OAuth 2.0. The API base is https://api.xero.com/api.xro/2.0/. Endpoints include Invoices, Contacts, Payments, and BankTransactions. Connections are tenant-specific—multi-tenant apps must handle organization switching. Rate limits: 60 calls per minute per organization. ## PostgreSQL Best Practices Use connection pooling (PgBouncer) for web applications. Index foreign keys and frequently queried columns. Avoid N+1 queries—use JOINs or batch loading. For large tables, consider partitioning by date. Always use parameterized queries to prevent SQL injection. ## Redis Caching Patterns Use Redis for session storage, rate limiting, and cache-aside patterns. Set TTLs on cached data to prevent stale reads. Consider Redis Cluster for high availability. Monitor memory usage—Redis holds everything in RAM. ## HubSpot CRM Integration HubSpot offers a REST API and webhooks for real-time sync. Authentication uses private apps (access token) or OAuth for public apps. The CRM API covers contacts, companies, deals, and tickets. Use the Search API for complex queries. Webhook subscriptions require a valid endpoint that responds to verification challenges. ## Xero Accounting Integration Xero uses OAuth 2.0. The API base is https://api.xero.com/api.xro/2.0/. Endpoints include Invoices, Contacts, Payments, and BankTransactions. Connections are tenant-specific—multi-tenant apps must handle organization switching. Rate limits: 60 calls per minute per organization. ## PostgreSQL Best Practices Use connection pooling (PgBouncer) for web applications. Index foreign keys and frequently queried columns. Avoid N+1 queries—use JOINs or batch loading. For large tables, consider partitioning by date. Always use parameterized queries to prevent SQL injection. ## Redis Caching Patterns Use Redis for session storage, rate limiting, and cache-aside patterns. Set TTLs on cached data to prevent stale reads. Consider Redis Cluster for high availability. Monitor memory usage—Redis holds everything in RAM. ## HubSpot CRM Integration HubSpot offers a REST API and webhooks for real-time sync. Authentication uses private apps (access token) or OAuth for public apps. The CRM API covers contacts, companies, deals, and tickets. Use the Search API for complex queries. Webhook subscriptions require a valid endpoint that responds to verification challenges. ## Xero Accounting Integration Xero uses OAuth 2.0. The API base is https://api.xero.com/api.xro/2.0/. Endpoints include Invoices, Contacts, Payments, and BankTransactions. Connections are tenant-specific—multi-tenant apps must handle organization switching. Rate limits: 60 calls per minute per organization. ## PostgreSQL Best Practices Use connection pooling (PgBouncer) for web applications. Index foreign keys and frequently queried columns. Avoid N+1 queries—use JOINs or batch loading. For large tables, consider partitioning by date. Always use parameterized queries to prevent SQL injection. ## Redis Caching Patterns Use Redis for session storage, rate limiting, and cache-aside patterns. Set TTLs on cached data to prevent stale reads. Consider Redis Cluster for high availability. Monitor memory usage—Redis holds everything in RAM. ## HubSpot CRM Integration HubSpot offers a REST API and webhooks for real-time sync. Authentication uses private apps (access token) or OAuth for public apps. The CRM API covers contacts, companies, deals, and tickets. Use the Search API for complex queries. Webhook subscriptions require a valid endpoint that responds to verification challenges. ## Xero Accounting Integration Xero uses OAuth 2.0. The API base is https://api.xero.com/api.xro/2.0/. Endpoints include Invoices, Contacts, Payments, and BankTransactions. Connections are tenant-specific—multi-tenant apps must handle organization switching. Rate limits: 60 calls per minute per organization. ## PostgreSQL Best Practices Use connection pooling (PgBouncer) for web applications. Index foreign keys and frequently queried columns. Avoid N+1 queries—use JOINs or batch loading. For large tables, consider partitioning by date. Always use parameterized queries to prevent SQL injection. ## Redis Caching Patterns Use Redis for session storage, rate limiting, and cache-aside patterns. Set TTLs on cached data to prevent stale reads. Consider Redis Cluster for high availability. Monitor memory usage—Redis holds everything in RAM. ## HubSpot CRM Integration HubSpot offers a REST API and webhooks for real-time sync. Authentication uses private apps (access token) or OAuth for public apps. The CRM API covers contacts, companies, deals, and tickets. Use the Search API for complex queries. Webhook subscriptions require a valid endpoint that responds to verification challenges. ## Xero Accounting Integration Xero uses OAuth 2.0. The API base is https://api.xero.com/api.xro/2.0/. Endpoints include Invoices, Contacts, Payments, and BankTransactions. Connections are tenant-specific—multi-tenant apps must handle organization switching. Rate limits: 60 calls per minute per organization. ## PostgreSQL Best Practices Use connection pooling (PgBouncer) for web applications. Index foreign keys and frequently queried columns. Avoid N+1 queries—use JOINs or batch loading. For large tables, consider partitioning by date. Always use parameterized queries to prevent SQL injection. ## Redis Caching Patterns Use Redis for session storage, rate limiting, and cache-aside patterns. Set TTLs on cached data to prevent stale reads. Consider Redis Cluster for high availability. Monitor memory usage—Redis holds everything in RAM. ## HubSpot CRM Integration HubSpot offers a REST API and webhooks for real-time sync. Authentication uses private apps (access token) or OAuth for public apps. The CRM API covers contacts, companies, deals, and tickets. Use the Search API for complex queries. Webhook subscriptions require a valid endpoint that responds to verification challenges. ## Xero Accounting Integration Xero uses OAuth 2.0. The API base is https://api.xero.com/api.xro/2.0/. Endpoints include Invoices, Contacts, Payments, and BankTransactions. Connections are tenant-specific—multi-tenant apps must handle organization switching. Rate limits: 60 calls per minute per organization. ## PostgreSQL Best Practices Use connection pooling (PgBouncer) for web applications. Index foreign keys and frequently queried columns. Avoid N+1 queries—use JOINs or batch loading. For large tables, consider partitioning by date. Always use parameterized queries to prevent SQL injection. ## Redis Caching Patterns Use Redis for session storage, rate limiting, and cache-aside patterns. Set TTLs on cached data to prevent stale reads. Consider Redis Cluster for high availability. Monitor memory usage—Redis holds everything in RAM. ## HubSpot CRM Integration HubSpot offers a REST API and webhooks for real-time sync. Authentication uses private apps (access token) or OAuth for public apps. The CRM API covers contacts, companies, deals, and tickets. Use the Search API for complex queries. Webhook subscriptions require a valid endpoint that responds to verification challenges. ## Xero Accounting Integration Xero uses OAuth 2.0. The API base is https://api.xero.com/api.xro/2.0/. Endpoints include Invoices, Contacts, Payments, and BankTransactions. Connections are tenant-specific—multi-tenant apps must handle organization switching. Rate limits: 60 calls per minute per organization. ## PostgreSQL Best Practices Use connection pooling (PgBouncer) for web applications. Index foreign keys and frequently queried columns. Avoid N+1 queries—use JOINs or batch loading. For large tables, consider partitioning by date. Always use parameterized queries to prevent SQL injection. ## Redis Caching Patterns Use Redis for session storage, rate limiting, and cache-aside patterns. Set TTLs on cached data to prevent stale reads. Consider Redis Cluster for high availability. Monitor memory usage—Redis holds everything in RAM. ## HubSpot CRM Integration HubSpot offers a REST API and webhooks for real-time sync. Authentication uses private apps (access token) or OAuth for public apps. The CRM API covers contacts, companies, deals, and tickets. Use the Search API for complex queries. Webhook subscriptions require a valid endpoint that responds to verification challenges. ## Xero Accounting Integration Xero uses OAuth 2.0. The API base is https://api.xero.com/api.xro/2.0/. Endpoints include Invoices, Contacts, Payments, and BankTransactions. Connections are tenant-specific—multi-tenant apps must handle organization switching. Rate limits: 60 calls per minute per organization. ## PostgreSQL Best Practices Use connection pooling (PgBouncer) for web applications. Index foreign keys and frequently queried columns. Avoid N+1 queries—use JOINs or batch loading. For large tables, consider partitioning by date. Always use parameterized queries to prevent SQL injection. ## Redis Caching Patterns Use Redis for session storage, rate limiting, and cache-aside patterns. Set TTLs on cached data to prevent stale reads. Consider Redis Cluster for high availability. Monitor memory usage—Redis holds everything in RAM. ## HubSpot CRM Integration HubSpot offers a REST API and webhooks for real-time sync. Authentication uses private apps (access token) or OAuth for public apps. The CRM API covers contacts, companies, deals, and tickets. Use the Search API for complex queries. Webhook subscriptions require a valid endpoint that responds to verification challenges. ## Xero Accounting Integration Xero uses OAuth 2.0. The API base is https://api.xero.com/api.xro/2.0/. Endpoints include Invoices, Contacts, Payments, and BankTransactions. Connections are tenant-specific—multi-tenant apps must handle organization switching. Rate limits: 60 calls per minute per organization. ## PostgreSQL Best Practices Use connection pooling (PgBouncer) for web applications. Index foreign keys and frequently queried columns. Avoid N+1 queries—use JOINs or batch loading. For large tables, consider partitioning by date. Always use parameterized queries to prevent SQL injection. ## Redis Caching Patterns Use Redis for session storage, rate limiting, and cache-aside patterns. Set TTLs on cached data to prevent stale reads. Consider Redis Cluster for high availability. Monitor memory usage—Redis holds everything in RAM. ## HubSpot CRM Integration HubSpot offers a REST API and webhooks for real-time sync. Authentication uses private apps (access token) or OAuth for public apps. The CRM API covers contacts, companies, deals, and tickets. Use the Search API for complex queries. Webhook subscriptions require a valid endpoint that responds to verification challenges. ## Xero Accounting Integration Xero uses OAuth 2.0. The API base is https://api.xero.com/api.xro/2.0/. Endpoints include Invoices, Contacts, Payments, and BankTransactions. Connections are tenant-specific—multi-tenant apps must handle organization switching. Rate limits: 60 calls per minute per organization. ## PostgreSQL Best Practices Use connection pooling (PgBouncer) for web applications. Index foreign keys and frequently queried columns. Avoid N+1 queries—use JOINs or batch loading. For large tables, consider partitioning by date. Always use parameterized queries to prevent SQL injection. ## Redis Caching Patterns Use Redis for session storage, rate limiting, and cache-aside patterns. Set TTLs on cached data to prevent stale reads. Consider Redis Cluster for high availability. Monitor memory usage—Redis holds everything in RAM. ## HubSpot CRM Integration HubSpot offers a REST API and webhooks for real-time sync. Authentication uses private apps (access token) or OAuth for public apps. The CRM API covers contacts, companies, deals, and tickets. Use the Search API for complex queries. Webhook subscriptions require a valid endpoint that responds to verification challenges. ## Xero Accounting Integration Xero uses OAuth 2.0. The API base is https://api.xero.com/api.xro/2.0/. Endpoints include Invoices, Contacts, Payments, and BankTransactions. Connections are tenant-specific—multi-tenant apps must handle organization switching. Rate limits: 60 calls per minute per organization. ## PostgreSQL Best Practices Use connection pooling (PgBouncer) for web applications. Index foreign keys and frequently queried columns. Avoid N+1 queries—use JOINs or batch loading. For large tables, consider partitioning by date. Always use parameterized queries to prevent SQL injection. ## Redis Caching Patterns Use Redis for session storage, rate limiting, and cache-aside patterns. Set TTLs on cached data to prevent stale reads. Consider Redis Cluster for high availability. Monitor memory usage—Redis holds everything in RAM. ## HubSpot CRM Integration HubSpot offers a REST API and webhooks for real-time sync. Authentication uses private apps (access token) or OAuth for public apps. The CRM API covers contacts, companies, deals, and tickets. Use the Search API for complex queries. Webhook subscriptions require a valid endpoint that responds to verification challenges. ## Xero Accounting Integration Xero uses OAuth 2.0. The API base is https://api.xero.com/api.xro/2.0/. Endpoints include Invoices, Contacts, Payments, and BankTransactions. Connections are tenant-specific—multi-tenant apps must handle organization switching. Rate limits: 60 calls per minute per organization. ## PostgreSQL Best Practices Use connection pooling (PgBouncer) for web applications. Index foreign keys and frequently queried columns. Avoid N+1 queries—use JOINs or batch loading. For large tables, consider partitioning by date. Always use parameterized queries to prevent SQL injection. ## Redis Caching Patterns Use Redis for session storage, rate limiting, and cache-aside patterns. Set TTLs on cached data to prevent stale reads. Consider Redis Cluster for high availability. Monitor memory usage—Redis holds everything in RAM. ## HubSpot CRM Integration HubSpot offers a REST API and webhooks for real-time sync. Authentication uses private apps (access token) or OAuth for public apps. The CRM API covers contacts, companies, deals, and tickets. Use the Search API for complex queries. Webhook subscriptions require a valid endpoint that responds to verification challenges. ## Xero Accounting Integration Xero uses OAuth 2.0. The API base is https://api.xero.com/api.xro/2.0/. Endpoints include Invoices, Contacts, Payments, and BankTransactions. Connections are tenant-specific—multi-tenant apps must handle organization switching. Rate limits: 60 calls per minute per organization. ## PostgreSQL Best Practices Use connection pooling (PgBouncer) for web applications. Index foreign keys and frequently queried columns. Avoid N+1 queries—use JOINs or batch loading. For large tables, consider partitioning by date. Always use parameterized queries to prevent SQL injection. ## Redis Caching Patterns Use Redis for session storage, rate limiting, and cache-aside patterns. Set TTLs on cached data to prevent stale reads. Consider Redis Cluster for high availability. Monitor memory usage—Redis holds everything in RAM. ## HubSpot CRM Integration HubSpot offers a REST API and webhooks for real-time sync. Authentication uses private apps (access token) or OAuth for public apps. The CRM API covers contacts, companies, deals, and tickets. Use the Search API for complex queries. Webhook subscriptions require a valid endpoint that responds to verification challenges. ## Xero Accounting Integration Xero uses OAuth 2.0. The API base is https://api.xero.com/api.xro/2.0/. Endpoints include Invoices, Contacts, Payments, and BankTransactions. Connections are tenant-specific—multi-tenant apps must handle organization switching. Rate limits: 60 calls per minute per organization. ## PostgreSQL Best Practices Use connection pooling (PgBouncer) for web applications. Index foreign keys and frequently queried columns. Avoid N+1 queries—use JOINs or batch loading. For large tables, consider partitioning by date. Always use parameterized queries to prevent SQL injection. ## Redis Caching Patterns Use Redis for session storage, rate limiting, and cache-aside patterns. Set TTLs on cached data to prevent stale reads. Consider Redis Cluster for high availability. Monitor memory usage—Redis holds everything in RAM. ## HubSpot CRM Integration HubSpot offers a REST API and webhooks for real-time sync. Authentication uses private apps (access token) or OAuth for public apps. The CRM API covers contacts, companies, deals, and tickets. Use the Search API for complex queries. Webhook subscriptions require a valid endpoint that responds to verification challenges. ## Xero Accounting Integration Xero uses OAuth 2.0. The API base is https://api.xero.com/api.xro/2.0/. Endpoints include Invoices, Contacts, Payments, and BankTransactions. Connections are tenant-specific—multi-tenant apps must handle organization switching. Rate limits: 60 calls per minute per organization. ## PostgreSQL Best Practices Use connection pooling (PgBouncer) for web applications. Index foreign keys and frequently queried columns. Avoid N+1 queries—use JOINs or batch loading. For large tables, consider partitioning by date. Always use parameterized queries to prevent SQL injection. ## Redis Caching Patterns Use Redis for session storage, rate limiting, and cache-aside patterns. Set TTLs on cached data to prevent stale reads. Consider Redis Cluster for high availability. Monitor memory usage—Redis holds everything in RAM. ## HubSpot CRM Integration HubSpot offers a REST API and webhooks for real-time sync. Authentication uses private apps (access token) or OAuth for public apps. The CRM API covers contacts, companies, deals, and tickets. Use the Search API for complex queries. Webhook subscriptions require a valid endpoint that responds to verification challenges. ## Xero Accounting Integration Xero uses OAuth 2.0. The API base is https://api.xero.com/api.xro/2.0/. Endpoints include Invoices, Contacts, Payments, and BankTransactions. Connections are tenant-specific—multi-tenant apps must handle organization switching. Rate limits: 60 calls per minute per organization. ## PostgreSQL Best Practices Use connection pooling (PgBouncer) for web applications. Index foreign keys and frequently queried columns. Avoid N+1 queries—use JOINs or batch loading. For large tables, consider partitioning by date. Always use parameterized queries to prevent SQL injection. ## Redis Caching Patterns Use Redis for session storage, rate limiting, and cache-aside patterns. Set TTLs on cached data to prevent stale reads. Consider Redis Cluster for high availability. Monitor memory usage—Redis holds everything in RAM. ## HubSpot CRM Integration HubSpot offers a REST API and webhooks for real-time sync. Authentication uses private apps (access token) or OAuth for public apps. The CRM API covers contacts, companies, deals, and tickets. Use the Search API for complex queries. Webhook subscriptions require a valid endpoint that responds to verification challenges. ## Xero Accounting Integration Xero uses OAuth 2.0. The API base is https://api.xero.com/api.xro/2.0/. Endpoints include Invoices, Contacts, Payments, and BankTransactions. Connections are tenant-specific—multi-tenant apps must handle organization switching. Rate limits: 60 calls per minute per organization. ## PostgreSQL Best Practices Use connection pooling (PgBouncer) for web applications. Index foreign keys and frequently queried columns. Avoid N+1 queries—use JOINs or batch loading. For large tables, consider partitioning by date. Always use parameterized queries to prevent SQL injection. ## Redis Caching Patterns Use Redis for session storage, rate limiting, and cache-aside patterns. Set TTLs on cached data to prevent stale reads. Consider Redis Cluster for high availability. Monitor memory usage—Redis holds everything in RAM. ## HubSpot CRM Integration HubSpot offers a REST API and webhooks for real-time sync. Authentication uses private apps (access token) or OAuth for public apps. The CRM API covers contacts, companies, deals, and tickets. Use the Search API for complex queries. Webhook subscriptions require a valid endpoint that responds to verification challenges. ## Xero Accounting Integration Xero uses OAuth 2.0. The API base is https://api.xero.com/api.xro/2.0/. Endpoints include Invoices, Contacts, Payments, and BankTransactions. Connections are tenant-specific—multi-tenant apps must handle organization switching. Rate limits: 60 calls per minute per organization. ## PostgreSQL Best Practices Use connection pooling (PgBouncer) for web applications. Index foreign keys and frequently queried columns. Avoid N+1 queries—use JOINs or batch loading. For large tables, consider partitioning by date. Always use parameterized queries to prevent SQL injection. ## Redis Caching Patterns Use Redis for session storage, rate limiting, and cache-aside patterns. Set TTLs on cached data to prevent stale reads. Consider Redis Cluster for high availability. Monitor memory usage—Redis holds everything in RAM. ## HubSpot CRM Integration HubSpot offers a REST API and webhooks for real-time sync. Authentication uses private apps (access token) or OAuth for public apps. The CRM API covers contacts, companies, deals, and tickets. Use the Search API for complex queries. Webhook subscriptions require a valid endpoint that responds to verification challenges. ## Xero Accounting Integration Xero uses OAuth 2.0. The API base is https://api.xero.com/api.xro/2.0/. Endpoints include Invoices, Contacts, Payments, and BankTransactions. Connections are tenant-specific—multi-tenant apps must handle organization switching. Rate limits: 60 calls per minute per organization. ## PostgreSQL Best Practices Use connection pooling (PgBouncer) for web applications. Index foreign keys and frequently queried columns. Avoid N+1 queries—use JOINs or batch loading. For large tables, consider partitioning by date. Always use parameterized queries to prevent SQL injection. ## Redis Caching Patterns Use Redis for session storage, rate limiting, and cache-aside patterns. Set TTLs on cached data to prevent stale reads. Consider Redis Cluster for high availability. Monitor memory usage—Redis holds everything in RAM. ## HubSpot CRM Integration HubSpot offers a REST API and webhooks for real-time sync. Authentication uses private apps (access token) or OAuth for public apps. The CRM API covers contacts, companies, deals, and tickets. Use the Search API for complex queries. Webhook subscriptions require a valid endpoint that responds to verification challenges. ## Xero Accounting Integration Xero uses OAuth 2.0. The API base is https://api.xero.com/api.xro/2.0/. Endpoints include Invoices, Contacts, Payments, and BankTransactions. Connections are tenant-specific—multi-tenant apps must handle organization switching. Rate limits: 60 calls per minute per organization. ## PostgreSQL Best Practices Use connection pooling (PgBouncer) for web applications. Index foreign keys and frequently queried columns. Avoid N+1 queries—use JOINs or batch loading. For large tables, consider partitioning by date. Always use parameterized queries to prevent SQL injection. ## Redis Caching Patterns Use Redis for session storage, rate limiting, and cache-aside patterns. Set TTLs on cached data to prevent stale reads. Consider Redis Cluster for high availability. Monitor memory usage—Redis holds everything in RAM. ## HubSpot CRM Integration HubSpot offers a REST API and webhooks for real-time sync. Authentication uses private apps (access token) or OAuth for public apps. The CRM API covers contacts, companies, deals, and tickets. Use the Search API for complex queries. Webhook subscriptions require a valid endpoint that responds to verification challenges. ## Xero Accounting Integration Xero uses OAuth 2.0. The API base is https://api.xero.com/api.xro/2.0/. Endpoints include Invoices, Contacts, Payments, and BankTransactions. Connections are tenant-specific—multi-tenant apps must handle organization switching. Rate limits: 60 calls per minute per organization. ## PostgreSQL Best Practices Use connection pooling (PgBouncer) for web applications. Index foreign keys and frequently queried columns. Avoid N+1 queries—use JOINs or batch loading. For large tables, consider partitioning by date. Always use parameterized queries to prevent SQL injection. ## Redis Caching Patterns Use Redis for session storage, rate limiting, and cache-aside patterns. Set TTLs on cached data to prevent stale reads. Consider Redis Cluster for high availability. Monitor memory usage—Redis holds everything in RAM. ## HubSpot CRM Integration HubSpot offers a REST API and webhooks for real-time sync. Authentication uses private apps (access token) or OAuth for public apps. The CRM API covers contacts, companies, deals, and tickets. Use the Search API for complex queries. Webhook subscriptions require a valid endpoint that responds to verification challenges. ## Xero Accounting Integration Xero uses OAuth 2.0. The API base is https://api.xero.com/api.xro/2.0/. Endpoints include Invoices, Contacts, Payments, and BankTransactions. Connections are tenant-specific—multi-tenant apps must handle organization switching. Rate limits: 60 calls per minute per organization. ## PostgreSQL Best Practices Use connection pooling (PgBouncer) for web applications. Index foreign keys and frequently queried columns. Avoid N+1 queries—use JOINs or batch loading. For large tables, consider partitioning by date. Always use parameterized queries to prevent SQL injection. ## Redis Caching Patterns Use Redis for session storage, rate limiting, and cache-aside patterns. Set TTLs on cached data to prevent stale reads. Consider Redis Cluster for high availability. Monitor memory usage—Redis holds everything in RAM. ## HubSpot CRM Integration HubSpot offers a REST API and webhooks for real-time sync. Authentication uses private apps (access token) or OAuth for public apps. The CRM API covers contacts, companies, deals, and tickets. Use the Search API for complex queries. Webhook subscriptions require a valid endpoint that responds to verification challenges. ## Xero Accounting Integration Xero uses OAuth 2.0. The API base is https://api.xero.com/api.xro/2.0/. Endpoints include Invoices, Contacts, Payments, and BankTransactions. Connections are tenant-specific—multi-tenant apps must handle organization switching. Rate limits: 60 calls per minute per organization. ## PostgreSQL Best Practices Use connection pooling (PgBouncer) for web applications. Index foreign keys and frequently queried columns. Avoid N+1 queries—use JOINs or batch loading. For large tables, consider partitioning by date. Always use parameterized queries to prevent SQL injection. ## Redis Caching Patterns Use Redis for session storage, rate limiting, and cache-aside patterns. Set TTLs on cached data to prevent stale reads. Consider Redis Cluster for high availability. Monitor memory usage—Redis holds everything in RAM. ## HubSpot CRM Integration HubSpot offers a REST API and webhooks for real-time sync. Authentication uses private apps (access token) or OAuth for public apps. The CRM API covers contacts, companies, deals, and tickets. Use the Search API for complex queries. Webhook subscriptions require a valid endpoint that responds to verification challenges. ## Xero Accounting Integration Xero uses OAuth 2.0. The API base is https://api.xero.com/api.xro/2.0/. Endpoints include Invoices, Contacts, Payments, and BankTransactions. Connections are tenant-specific—multi-tenant apps must handle organization switching. Rate limits: 60 calls per minute per organization. ## PostgreSQL Best Practices Use connection pooling (PgBouncer) for web applications. Index foreign keys and frequently queried columns. Avoid N+1 queries—use JOINs or batch loading. For large tables, consider partitioning by date. Always use parameterized queries to prevent SQL injection. ## Redis Caching Patterns Use Redis for session storage, rate limiting, and cache-aside patterns. Set TTLs on cached data to prevent stale reads. Consider Redis Cluster for high availability. Monitor memory usage—Redis holds everything in RAM. ## HubSpot CRM Integration HubSpot offers a REST API and webhooks for real-time sync. Authentication uses private apps (access token) or OAuth for public apps. The CRM API covers contacts, companies, deals, and tickets. Use the Search API for complex queries. Webhook subscriptions require a valid endpoint that responds to verification challenges. ## Xero Accounting Integration Xero uses OAuth 2.0. The API base is https://api.xero.com/api.xro/2.0/. Endpoints include Invoices, Contacts, Payments, and BankTransactions. Connections are tenant-specific—multi-tenant apps must handle organization switching. Rate limits: 60 calls per minute per organization. ## PostgreSQL Best Practices Use connection pooling (PgBouncer) for web applications. Index foreign keys and frequently queried columns. Avoid N+1 queries—use JOINs or batch loading. For large tables, consider partitioning by date. Always use parameterized queries to prevent SQL injection. ## Redis Caching Patterns Use Redis for session storage, rate limiting, and cache-aside patterns. Set TTLs on cached data to prevent stale reads. Consider Redis Cluster for high availability. Monitor memory usage—Redis holds everything in RAM. ## HubSpot CRM Integration HubSpot offers a REST API and webhooks for real-time sync. Authentication uses private apps (access token) or OAuth for public apps. The CRM API covers contacts, companies, deals, and tickets. Use the Search API for complex queries. Webhook subscriptions require a valid endpoint that responds to verification challenges. ## Xero Accounting Integration Xero uses OAuth 2.0. The API base is https://api.xero.com/api.xro/2.0/. Endpoints include Invoices, Contacts, Payments, and BankTransactions. Connections are tenant-specific—multi-tenant apps must handle organization switching. Rate limits: 60 calls per minute per organization. ## PostgreSQL Best Practices Use connection pooling (PgBouncer) for web applications. Index foreign keys and frequently queried columns. Avoid N+1 queries—use JOINs or batch loading. For large tables, consider partitioning by date. Always use parameterized queries to prevent SQL injection. ## Redis Caching Patterns Use Redis for session storage, rate limiting, and cache-aside patterns. Set TTLs on cached data to prevent stale reads. Consider Redis Cluster for high availability. Monitor memory usage—Redis holds everything in RAM. ## HubSpot CRM Integration HubSpot offers a REST API and webhooks for real-time sync. Authentication uses private apps (access token) or OAuth for public apps. The CRM API covers contacts, companies, deals, and tickets. Use the Search API for complex queries. Webhook subscriptions require a valid endpoint that responds to verification challenges. ## Xero Accounting Integration Xero uses OAuth 2.0. The API base is https://api.xero.com/api.xro/2.0/. Endpoints include Invoices, Contacts, Payments, and BankTransactions. Connections are tenant-specific—multi-tenant apps must handle organization switching. Rate limits: 60 calls per minute per organization. ## PostgreSQL Best Practices Use connection pooling (PgBouncer) for web applications. Index foreign keys and frequently queried columns. Avoid N+1 queries—use JOINs or batch loading. For large tables, consider partitioning by date. Always use parameterized queries to prevent SQL injection. ## Redis Caching Patterns Use Redis for session storage, rate limiting, and cache-aside patterns. Set TTLs on cached data to prevent stale reads. Consider Redis Cluster for high availability. Monitor memory usage—Redis holds everything in RAM. ## HubSpot CRM Integration HubSpot offers a REST API and webhooks for real-time sync. Authentication uses private apps (access token) or OAuth for public apps. The CRM API covers contacts, companies, deals, and tickets. Use the Search API for complex queries. Webhook subscriptions require a valid endpoint that responds to verification challenges. ## Xero Accounting Integration Xero uses OAuth 2.0. The API base is https://api.xero.com/api.xro/2.0/. Endpoints include Invoices, Contacts, Payments, and BankTransactions. Connections are tenant-specific—multi-tenant apps must handle organization switching. Rate limits: 60 calls per minute per organization. ## PostgreSQL Best Practices Use connection pooling (PgBouncer) for web applications. Index foreign keys and frequently queried columns. Avoid N+1 queries—use JOINs or batch loading. For large tables, consider partitioning by date. Always use parameterized queries to prevent SQL injection. ## Redis Caching Patterns Use Redis for session storage, rate limiting, and cache-aside patterns. Set TTLs on cached data to prevent stale reads. Consider Redis Cluster for high availability. Monitor memory usage—Redis holds everything in RAM. ## HubSpot CRM Integration HubSpot offers a REST API and webhooks for real-time sync. Authentication uses private apps (access token) or OAuth for public apps. The CRM API covers contacts, companies, deals, and tickets. Use the Search API for complex queries. Webhook subscriptions require a valid endpoint that responds to verification challenges. ## Xero Accounting Integration Xero uses OAuth 2.0. The API base is https://api.xero.com/api.xro/2.0/. Endpoints include Invoices, Contacts, Payments, and BankTransactions. Connections are tenant-specific—multi-tenant apps must handle organization switching. Rate limits: 60 calls per minute per organization. ## PostgreSQL Best Practices Use connection pooling (PgBouncer) for web applications. Index foreign keys and frequently queried columns. Avoid N+1 queries—use JOINs or batch loading. For large tables, consider partitioning by date. Always use parameterized queries to prevent SQL injection. ## Redis Caching Patterns Use Redis for session storage, rate limiting, and cache-aside patterns. Set TTLs on cached data to prevent stale reads. Consider Redis Cluster for high availability. Monitor memory usage—Redis holds everything in RAM. ## HubSpot CRM Integration HubSpot offers a REST API and webhooks for real-time sync. Authentication uses private apps (access token) or OAuth for public apps. The CRM API covers contacts, companies, deals, and tickets. Use the Search API for complex queries. Webhook subscriptions require a valid endpoint that responds to verification challenges. ## Xero Accounting Integration Xero uses OAuth 2.0. The API base is https://api.xero.com/api.xro/2.0/. Endpoints include Invoices, Contacts, Payments, and BankTransactions. Connections are tenant-specific—multi-tenant apps must handle organization switching. Rate limits: 60 calls per minute per organization. ## PostgreSQL Best Practices Use connection pooling (PgBouncer) for web applications. Index foreign keys and frequently queried columns. Avoid N+1 queries—use JOINs or batch loading. For large tables, consider partitioning by date. Always use parameterized queries to prevent SQL injection. ## Redis Caching Patterns Use Redis for session storage, rate limiting, and cache-aside patterns. Set TTLs on cached data to prevent stale reads. Consider Redis Cluster for high availability. Monitor memory usage—Redis holds everything in RAM. ## HubSpot CRM Integration HubSpot offers a REST API and webhooks for real-time sync. Authentication uses private apps (access token) or OAuth for public apps. The CRM API covers contacts, companies, deals, and tickets. Use the Search API for complex queries. Webhook subscriptions require a valid endpoint that responds to verification challenges. ## Xero Accounting Integration Xero uses OAuth 2.0. The API base is https://api.xero.com/api.xro/2.0/. Endpoints include Invoices, Contacts, Payments, and BankTransactions. Connections are tenant-specific—multi-tenant apps must handle organization switching. Rate limits: 60 calls per minute per organization. ## PostgreSQL Best Practices Use connection pooling (PgBouncer) for web applications. Index foreign keys and frequently queried columns. Avoid N+1 queries—use JOINs or batch loading. For large tables, consider partitioning by date. Always use parameterized queries to prevent SQL injection. ## Redis Caching Patterns Use Redis for session storage, rate limiting, and cache-aside patterns. Set TTLs on cached data to prevent stale reads. Consider Redis Cluster for high availability. Monitor memory usage—Redis holds everything in RAM. ## HubSpot CRM Integration HubSpot offers a REST API and webhooks for real-time sync. Authentication uses private apps (access token) or OAuth for public apps. The CRM API covers contacts, companies, deals, and tickets. Use the Search API for complex queries. Webhook subscriptions require a valid endpoint that responds to verification challenges. ## Xero Accounting Integration Xero uses OAuth 2.0. The API base is https://api.xero.com/api.xro/2.0/. Endpoints include Invoices, Contacts, Payments, and BankTransactions. Connections are tenant-specific—multi-tenant apps must handle organization switching. Rate limits: 60 calls per minute per organization. ## PostgreSQL Best Practices Use connection pooling (PgBouncer) for web applications. Index foreign keys and frequently queried columns. Avoid N+1 queries—use JOINs or batch loading. For large tables, consider partitioning by date. Always use parameterized queries to prevent SQL injection. ## Redis Caching Patterns Use Redis for session storage, rate limiting, and cache-aside patterns. Set TTLs on cached data to prevent stale reads. Consider Redis Cluster for high availability. Monitor memory usage—Redis holds everything in RAM. ## HubSpot CRM Integration HubSpot offers a REST API and webhooks for real-time sync. Authentication uses private apps (access token) or OAuth for public apps. The CRM API covers contacts, companies, deals, and tickets. Use the Search API for complex queries. Webhook subscriptions require a valid endpoint that responds to verification challenges. ## Xero Accounting Integration Xero uses OAuth 2.0. The API base is https://api.xero.com/api.xro/2.0/. Endpoints include Invoices, Contacts, Payments, and BankTransactions. Connections are tenant-specific—multi-tenant apps must handle organization switching. Rate limits: 60 calls per minute per organization. ## PostgreSQL Best Practices Use connection pooling (PgBouncer) for web applications. Index foreign keys and frequently queried columns. Avoid N+1 queries—use JOINs or batch loading. For large tables, consider partitioning by date. Always use parameterized queries to prevent SQL injection. ## Redis Caching Patterns Use Redis for session storage, rate limiting, and cache-aside patterns. Set TTLs on cached data to prevent stale reads. Consider Redis Cluster for high availability. Monitor memory usage—Redis holds everything in RAM. ## HubSpot CRM Integration HubSpot offers a REST API and webhooks for real-time sync. Authentication uses private apps (access token) or OAuth for public apps. The CRM API covers contacts, companies, deals, and tickets. Use the Search API for complex queries. Webhook subscriptions require a valid endpoint that responds to verification challenges. ## Xero Accounting Integration Xero uses OAuth 2.0. The API base is https://api.xero.com/api.xro/2.0/. Endpoints include Invoices, Contacts, Payments, and BankTransactions. Connections are tenant-specific—multi-tenant apps must handle organization switching. Rate limits: 60 calls per minute per organization. ## PostgreSQL Best Practices Use connection pooling (PgBouncer) for web applications. Index foreign keys and frequently queried columns. Avoid N+1 queries—use JOINs or batch loading. For large tables, consider partitioning by date. Always use parameterized queries to prevent SQL injection. ## Redis Caching Patterns Use Redis for session storage, rate limiting, and cache-aside patterns. Set TTLs on cached data to prevent stale reads. Consider Redis Cluster for high availability. Monitor memory usage—Redis holds everything in RAM. ## HubSpot CRM Integration HubSpot offers a REST API and webhooks for real-time sync. Authentication uses private apps (access token) or OAuth for public apps. The CRM API covers contacts, companies, deals, and tickets. Use the Search API for complex queries. Webhook subscriptions require a valid endpoint that responds to verification challenges. ## Xero Accounting Integration Xero uses OAuth 2.0. The API base is https://api.xero.com/api.xro/2.0/. Endpoints include Invoices, Contacts, Payments, and BankTransactions. Connections are tenant-specific—multi-tenant apps must handle organization switching. Rate limits: 60 calls per minute per organization. ## PostgreSQL Best Practices Use connection pooling (PgBouncer) for web applications. Index foreign keys and frequently queried columns. Avoid N+1 queries—use JOINs or batch loading. For large tables, consider partitioning by date. Always use parameterized queries to prevent SQL injection. ## Redis Caching Patterns Use Redis for session storage, rate limiting, and cache-aside patterns. Set TTLs on cached data to prevent stale reads. Consider Redis Cluster for high availability. Monitor memory usage—Redis holds everything in RAM. ## HubSpot CRM Integration HubSpot offers a REST API and webhooks for real-time sync. Authentication uses private apps (access token) or OAuth for public apps. The CRM API covers contacts, companies, deals, and tickets. Use the Search API for complex queries. Webhook subscriptions require a valid endpoint that responds to verification challenges. ## Xero Accounting Integration Xero uses OAuth 2.0. The API base is https://api.xero.com/api.xro/2.0/. Endpoints include Invoices, Contacts, Payments, and BankTransactions. Connections are tenant-specific—multi-tenant apps must handle organization switching. Rate limits: 60 calls per minute per organization. ## PostgreSQL Best Practices Use connection pooling (PgBouncer) for web applications. Index foreign keys and frequently queried columns. Avoid N+1 queries—use JOINs or batch loading. For large tables, consider partitioning by date. Always use parameterized queries to prevent SQL injection. ## Redis Caching Patterns Use Redis for session storage, rate limiting, and cache-aside patterns. Set TTLs on cached data to prevent stale reads. Consider Redis Cluster for high availability. Monitor memory usage—Redis holds everything in RAM. ## HubSpot CRM Integration HubSpot offers a REST API and webhooks for real-time sync. Authentication uses private apps (access token) or OAuth for public apps. The CRM API covers contacts, companies, deals, and tickets. Use the Search API for complex queries. Webhook subscriptions require a valid endpoint that responds to verification challenges. ## Xero Accounting Integration Xero uses OAuth 2.0. The API base is https://api.xero.com/api.xro/2.0/. Endpoints include Invoices, Contacts, Payments, and BankTransactions. Connections are tenant-specific—multi-tenant apps must handle organization switching. Rate limits: 60 calls per minute per organization. ## PostgreSQL Best Practices Use connection pooling (PgBouncer) for web applications. Index foreign keys and frequently queried columns. Avoid N+1 queries—use JOINs or batch loading. For large tables, consider partitioning by date. Always use parameterized queries to prevent SQL injection. ## Redis Caching Patterns Use Redis for session storage, rate limiting, and cache-aside patterns. Set TTLs on cached data to prevent stale reads. Consider Redis Cluster for high availability. Monitor memory usage—Redis holds everything in RAM. ## HubSpot CRM Integration HubSpot offers a REST API and webhooks for real-time sync. Authentication uses private apps (access token) or OAuth for public apps. The CRM API covers contacts, companies, deals, and tickets. Use the Search API for complex queries. Webhook subscriptions require a valid endpoint that responds to verification challenges. ## Xero Accounting Integration Xero uses OAuth 2.0. The API base is https://api.xero.com/api.xro/2.0/. Endpoints include Invoices, Contacts, Payments, and BankTransactions. Connections are tenant-specific—multi-tenant apps must handle organization switching. Rate limits: 60 calls per minute per organization. ## PostgreSQL Best Practices Use connection pooling (PgBouncer) for web applications. Index foreign keys and frequently queried columns. Avoid N+1 queries—use JOINs or batch loading. For large tables, consider partitioning by date. Always use parameterized queries to prevent SQL injection. ## Redis Caching Patterns Use Redis for session storage, rate limiting, and cache-aside patterns. Set TTLs on cached data to prevent stale reads. Consider Redis Cluster for high availability. Monitor memory usage—Redis holds everything in RAM. ## HubSpot CRM Integration HubSpot offers a REST API and webhooks for real-time sync. Authentication uses private apps (access token) or OAuth for public apps. The CRM API covers contacts, companies, deals, and tickets. Use the Search API for complex queries. Webhook subscriptions require a valid endpoint that responds to verification challenges. ## Xero Accounting Integration Xero uses OAuth 2.0. The API base is https://api.xero.com/api.xro/2.0/. Endpoints include Invoices, Contacts, Payments, and BankTransactions. Connections are tenant-specific—multi-tenant apps must handle organization switching. Rate limits: 60 calls per minute per organization. ## PostgreSQL Best Practices Use connection pooling (PgBouncer) for web applications. Index foreign keys and frequently queried columns. Avoid N+1 queries—use JOINs or batch loading. For large tables, consider partitioning by date. Always use parameterized queries to prevent SQL injection. ## Redis Caching Patterns Use Redis for session storage, rate limiting, and cache-aside patterns. Set TTLs on cached data to prevent stale reads. Consider Redis Cluster for high availability. Monitor memory usage—Redis holds everything in RAM. ## HubSpot CRM Integration HubSpot offers a REST API and webhooks for real-time sync. Authentication uses private apps (access token) or OAuth for public apps. The CRM API covers contacts, companies, deals, and tickets. Use the Search API for complex queries. Webhook subscriptions require a valid endpoint that responds to verification challenges. ## Xero Accounting Integration Xero uses OAuth 2.0. The API base is https://api.xero.com/api.xro/2.0/. Endpoints include Invoices, Contacts, Payments, and BankTransactions. Connections are tenant-specific—multi-tenant apps must handle organization switching. Rate limits: 60 calls per minute per organization. ## PostgreSQL Best Practices Use connection pooling (PgBouncer) for web applications. Index foreign keys and frequently queried columns. Avoid N+1 queries—use JOINs or batch loading. For large tables, consider partitioning by date. Always use parameterized queries to prevent SQL injection. ## Redis Caching Patterns Use Redis for session storage, rate limiting, and cache-aside patterns. Set TTLs on cached data to prevent stale reads. Consider Redis Cluster for high availability. Monitor memory usage—Redis holds everything in RAM. ## HubSpot CRM Integration HubSpot offers a REST API and webhooks for real-time sync. Authentication uses private apps (access token) or OAuth for public apps. The CRM API covers contacts, companies, deals, and tickets. Use the Search API for complex queries. Webhook subscriptions require a valid endpoint that responds to verification challenges. ## Xero Accounting Integration Xero uses OAuth 2.0. The API base is https://api.xero.com/api.xro/2.0/. Endpoints include Invoices, Contacts, Payments, and BankTransactions. Connections are tenant-specific—multi-tenant apps must handle organization switching. Rate limits: 60 calls per minute per organization. ## PostgreSQL Best Practices Use connection pooling (PgBouncer) for web applications. Index foreign keys and frequently queried columns. Avoid N+1 queries—use JOINs or batch loading. For large tables, consider partitioning by date. Always use parameterized queries to prevent SQL injection. ## Redis Caching Patterns Use Redis for session storage, rate limiting, and cache-aside patterns. Set TTLs on cached data to prevent stale reads. Consider Redis Cluster for high availability. Monitor memory usage—Redis holds everything in RAM. ## HubSpot CRM Integration HubSpot offers a REST API and webhooks for real-time sync. Authentication uses private apps (access token) or OAuth for public apps. The CRM API covers contacts, companies, deals, and tickets. Use the Search API for complex queries. Webhook subscriptions require a valid endpoint that responds to verification challenges. ## Xero Accounting Integration Xero uses OAuth 2.0. The API base is https://api.xero.com/api.xro/2.0/. Endpoints include Invoices, Contacts, Payments, and BankTransactions. Connections are tenant-specific—multi-tenant apps must handle organization switching. Rate limits: 60 calls per minute per organization. ## PostgreSQL Best Practices Use connection pooling (PgBouncer) for web applications. Index foreign keys and frequently queried columns. Avoid N+1 queries—use JOINs or batch loading. For large tables, consider partitioning by date. Always use parameterized queries to prevent SQL injection. ## Redis Caching Patterns Use Redis for session storage, rate limiting, and cache-aside patterns. Set TTLs on cached data to prevent stale reads. Consider Redis Cluster for high availability. Monitor memory usage—Redis holds everything in RAM. ## HubSpot CRM Integration HubSpot offers a REST API and webhooks for real-time sync. Authentication uses private apps (access token) or OAuth for public apps. The CRM API covers contacts, companies, deals, and tickets. Use the Search API for complex queries. Webhook subscriptions require a valid endpoint that responds to verification challenges. ## Xero Accounting Integration Xero uses OAuth 2.0. The API base is https://api.xero.com/api.xro/2.0/. Endpoints include Invoices, Contacts, Payments, and BankTransactions. Connections are tenant-specific—multi-tenant apps must handle organization switching. Rate limits: 60 calls per minute per organization. ## PostgreSQL Best Practices Use connection pooling (PgBouncer) for web applications. Index foreign keys and frequently queried columns. Avoid N+1 queries—use JOINs or batch loading. For large tables, consider partitioning by date. Always use parameterized queries to prevent SQL injection. ## Redis Caching Patterns Use Redis for session storage, rate limiting, and cache-aside patterns. Set TTLs on cached data to prevent stale reads. Consider Redis Cluster for high availability. Monitor memory usage—Redis holds everything in RAM. ## HubSpot CRM Integration HubSpot offers a REST API and webhooks for real-time sync. Authentication uses private apps (access token) or OAuth for public apps. The CRM API covers contacts, companies, deals, and tickets. Use the Search API for complex queries. Webhook subscriptions require a valid endpoint that responds to verification challenges. ## Xero Accounting Integration Xero uses OAuth 2.0. The API base is https://api.xero.com/api.xro/2.0/. Endpoints include Invoices, Contacts, Payments, and BankTransactions. Connections are tenant-specific—multi-tenant apps must handle organization switching. Rate limits: 60 calls per minute per organization. ## PostgreSQL Best Practices Use connection pooling (PgBouncer) for web applications. Index foreign keys and frequently queried columns. Avoid N+1 queries—use JOINs or batch loading. For large tables, consider partitioning by date. Always use parameterized queries to prevent SQL injection. ## Redis Caching Patterns Use Redis for session storage, rate limiting, and cache-aside patterns. Set TTLs on cached data to prevent stale reads. Consider Redis Cluster for high availability. Monitor memory usage—Redis holds everything in RAM. ## HubSpot CRM Integration HubSpot offers a REST API and webhooks for real-time sync. Authentication uses private apps (access token) or OAuth for public apps. The CRM API covers contacts, companies, deals, and tickets. Use the Search API for complex queries. Webhook subscriptions require a valid endpoint that responds to verification challenges. ## Xero Accounting Integration Xero uses OAuth 2.0. The API base is https://api.xero.com/api.xro/2.0/. Endpoints include Invoices, Contacts, Payments, and BankTransactions. Connections are tenant-specific—multi-tenant apps must handle organization switching. Rate limits: 60 calls per minute per organization. ## PostgreSQL Best Practices Use connection pooling (PgBouncer) for web applications. Index foreign keys and frequently queried columns. Avoid N+1 queries—use JOINs or batch loading. For large tables, consider partitioning by date. Always use parameterized queries to prevent SQL injection. ## Redis Caching Patterns Use Redis for session storage, rate limiting, and cache-aside patterns. Set TTLs on cached data to prevent stale reads. Consider Redis Cluster for high availability. Monitor memory usage—Redis holds everything in RAM. ## HubSpot CRM Integration HubSpot offers a REST API and webhooks for real-time sync. Authentication uses private apps (access token) or OAuth for public apps. The CRM API covers contacts, companies, deals, and tickets. Use the Search API for complex queries. Webhook subscriptions require a valid endpoint that responds to verification challenges. ## Xero Accounting Integration Xero uses OAuth 2.0. The API base is https://api.xero.com/api.xro/2.0/. Endpoints include Invoices, Contacts, Payments, and BankTransactions. Connections are tenant-specific—multi-tenant apps must handle organization switching. Rate limits: 60 calls per minute per organization. ## PostgreSQL Best Practices Use connection pooling (PgBouncer) for web applications. Index foreign keys and frequently queried columns. Avoid N+1 queries—use JOINs or batch loading. For large tables, consider partitioning by date. Always use parameterized queries to prevent SQL injection. ## Redis Caching Patterns Use Redis for session storage, rate limiting, and cache-aside patterns. Set TTLs on cached data to prevent stale reads. Consider Redis Cluster for high availability. Monitor memory usage—Redis holds everything in RAM. ## HubSpot CRM Integration HubSpot offers a REST API and webhooks for real-time sync. Authentication uses private apps (access token) or OAuth for public apps. The CRM API covers contacts, companies, deals, and tickets. Use the Search API for complex queries. Webhook subscriptions require a valid endpoint that responds to verification challenges. ## Xero Accounting Integration Xero uses OAuth 2.0. The API base is https://api.xero.com/api.xro/2.0/. Endpoints include Invoices, Contacts, Payments, and BankTransactions. Connections are tenant-specific—multi-tenant apps must handle organization switching. Rate limits: 60 calls per minute per organization. ## PostgreSQL Best Practices Use connection pooling (PgBouncer) for web applications. Index foreign keys and frequently queried columns. Avoid N+1 queries—use JOINs or batch loading. For large tables, consider partitioning by date. Always use parameterized queries to prevent SQL injection. ## Redis Caching Patterns Use Redis for session storage, rate limiting, and cache-aside patterns. Set TTLs on cached data to prevent stale reads. Consider Redis Cluster for high availability. Monitor memory usage—Redis holds everything in RAM. ## HubSpot CRM Integration HubSpot offers a REST API and webhooks for real-time sync. Authentication uses private apps (access token) or OAuth for public apps. The CRM API covers contacts, companies, deals, and tickets. Use the Search API for complex queries. Webhook subscriptions require a valid endpoint that responds to verification challenges. ## Xero Accounting Integration Xero uses OAuth 2.0. The API base is https://api.xero.com/api.xro/2.0/. Endpoints include Invoices, Contacts, Payments, and BankTransactions. Connections are tenant-specific—multi-tenant apps must handle organization switching. Rate limits: 60 calls per minute per organization. ## PostgreSQL Best Practices Use connection pooling (PgBouncer) for web applications. Index foreign keys and frequently queried columns. Avoid N+1 queries—use JOINs or batch loading. For large tables, consider partitioning by date. Always use parameterized queries to prevent SQL injection. ## Redis Caching Patterns Use Redis for session storage, rate limiting, and cache-aside patterns. Set TTLs on cached data to prevent stale reads. Consider Redis Cluster for high availability. Monitor memory usage—Redis holds everything in RAM. ## HubSpot CRM Integration HubSpot offers a REST API and webhooks for real-time sync. Authentication uses private apps (access token) or OAuth for public apps. The CRM API covers contacts, companies, deals, and tickets. Use the Search API for complex queries. Webhook subscriptions require a valid endpoint that responds to verification challenges. ## Xero Accounting Integration Xero uses OAuth 2.0. The API base is https://api.xero.com/api.xro/2.0/. Endpoints include Invoices, Contacts, Payments, and BankTransactions. Connections are tenant-specific—multi-tenant apps must handle organization switching. Rate limits: 60 calls per minute per organization. ## PostgreSQL Best Practices Use connection pooling (PgBouncer) for web applications. Index foreign keys and frequently queried columns. Avoid N+1 queries—use JOINs or batch loading. For large tables, consider partitioning by date. Always use parameterized queries to prevent SQL injection. ## Redis Caching Patterns Use Redis for session storage, rate limiting, and cache-aside patterns. Set TTLs on cached data to prevent stale reads. Consider Redis Cluster for high availability. Monitor memory usage—Redis holds everything in RAM. ## HubSpot CRM Integration HubSpot offers a REST API and webhooks for real-time sync. Authentication uses private apps (access token) or OAuth for public apps. The CRM API covers contacts, companies, deals, and tickets. Use the Search API for complex queries. Webhook subscriptions require a valid endpoint that responds to verification challenges. ## Xero Accounting Integration Xero uses OAuth 2.0. The API base is https://api.xero.com/api.xro/2.0/. Endpoints include Invoices, Contacts, Payments, and BankTransactions. Connections are tenant-specific—multi-tenant apps must handle organization switching. Rate limits: 60 calls per minute per organization. ## PostgreSQL Best Practices Use connection pooling (PgBouncer) for web applications. Index foreign keys and frequently queried columns. Avoid N+1 queries—use JOINs or batch loading. For large tables, consider partitioning by date. Always use parameterized queries to prevent SQL injection. ## Redis Caching Patterns Use Redis for session storage, rate limiting, and cache-aside patterns. Set TTLs on cached data to prevent stale reads. Consider Redis Cluster for high availability. Monitor memory usage—Redis holds everything in RAM. ## HubSpot CRM Integration HubSpot offers a REST API and webhooks for real-time sync. Authentication uses private apps (access token) or OAuth for public apps. The CRM API covers contacts, companies, deals, and tickets. Use the Search API for complex queries. Webhook subscriptions require a valid endpoint that responds to verification challenges. ## Xero Accounting Integration Xero uses OAuth 2.0. The API base is https://api.xero.com/api.xro/2.0/. Endpoints include Invoices, Contacts, Payments, and BankTransactions. Connections are tenant-specific—multi-tenant apps must handle organization switching. Rate limits: 60 calls per minute per organization. ## PostgreSQL Best Practices Use connection pooling (PgBouncer) for web applications. Index foreign keys and frequently queried columns. Avoid N+1 queries—use JOINs or batch loading. For large tables, consider partitioning by date. Always use parameterized queries to prevent SQL injection. ## Redis Caching Patterns Use Redis for session storage, rate limiting, and cache-aside patterns. Set TTLs on cached data to prevent stale reads. Consider Redis Cluster for high availability. Monitor memory usage—Redis holds everything in RAM. ## HubSpot CRM Integration HubSpot offers a REST API and webhooks for real-time sync. Authentication uses private apps (access token) or OAuth for public apps. The CRM API covers contacts, companies, deals, and tickets. Use the Search API for complex queries. Webhook subscriptions require a valid endpoint that responds to verification challenges. ## Xero Accounting Integration Xero uses OAuth 2.0. The API base is https://api.xero.com/api.xro/2.0/. Endpoints include Invoices, Contacts, Payments, and BankTransactions. Connections are tenant-specific—multi-tenant apps must handle organization switching. Rate limits: 60 calls per minute per organization. ## PostgreSQL Best Practices Use connection pooling (PgBouncer) for web applications. Index foreign keys and frequently queried columns. Avoid N+1 queries—use JOINs or batch loading. For large tables, consider partitioning by date. Always use parameterized queries to prevent SQL injection. ## Redis Caching Patterns Use Redis for session storage, rate limiting, and cache-aside patterns. Set TTLs on cached data to prevent stale reads. Consider Redis Cluster for high availability. Monitor memory usage—Redis holds everything in RAM. ## HubSpot CRM Integration HubSpot offers a REST API and webhooks for real-time sync. Authentication uses private apps (access token) or OAuth for public apps. The CRM API covers contacts, companies, deals, and tickets. Use the Search API for complex queries. Webhook subscriptions require a valid endpoint that responds to verification challenges. ## Xero Accounting Integration Xero uses OAuth 2.0. The API base is https://api.xero.com/api.xro/2.0/. Endpoints include Invoices, Contacts, Payments, and BankTransactions. Connections are tenant-specific—multi-tenant apps must handle organization switching. Rate limits: 60 calls per minute per organization. ## PostgreSQL Best Practices Use connection pooling (PgBouncer) for web applications. Index foreign keys and frequently queried columns. Avoid N+1 queries—use JOINs or batch loading. For large tables, consider partitioning by date. Always use parameterized queries to prevent SQL injection. ## Redis Caching Patterns Use Redis for session storage, rate limiting, and cache-aside patterns. Set TTLs on cached data to prevent stale reads. Consider Redis Cluster for high availability. Monitor memory usage—Redis holds everything in RAM. ## HubSpot CRM Integration HubSpot offers a REST API and webhooks for real-time sync. Authentication uses private apps (access token) or OAuth for public apps. The CRM API covers contacts, companies, deals, and tickets. Use the Search API for complex queries. Webhook subscriptions require a valid endpoint that responds to verification challenges. ## Xero Accounting Integration Xero uses OAuth 2.0. The API base is https://api.xero.com/api.xro/2.0/. Endpoints include Invoices, Contacts, Payments, and BankTransactions. Connections are tenant-specific—multi-tenant apps must handle organization switching. Rate limits: 60 calls per minute per organization. ## PostgreSQL Best Practices Use connection pooling (PgBouncer) for web applications. Index foreign keys and frequently queried columns. Avoid N+1 queries—use JOINs or batch loading. For large tables, consider partitioning by date. Always use parameterized queries to prevent SQL injection. ## Redis Caching Patterns Use Redis for session storage, rate limiting, and cache-aside patterns. Set TTLs on cached data to prevent stale reads. Consider Redis Cluster for high availability. Monitor memory usage—Redis holds everything in RAM. ## HubSpot CRM Integration HubSpot offers a REST API and webhooks for real-time sync. Authentication uses private apps (access token) or OAuth for public apps. The CRM API covers contacts, companies, deals, and tickets. Use the Search API for complex queries. Webhook subscriptions require a valid endpoint that responds to verification challenges. ## Xero Accounting Integration Xero uses OAuth 2.0. The API base is https://api.xero.com/api.xro/2.0/. Endpoints include Invoices, Contacts, Payments, and BankTransactions. Connections are tenant-specific—multi-tenant apps must handle organization switching. Rate limits: 60 calls per minute per organization. ## PostgreSQL Best Practices Use connection pooling (PgBouncer) for web applications. Index foreign keys and frequently queried columns. Avoid N+1 queries—use JOINs or batch loading. For large tables, consider partitioning by date. Always use parameterized queries to prevent SQL injection. ## Redis Caching Patterns Use Redis for session storage, rate limiting, and cache-aside patterns. Set TTLs on cached data to prevent stale reads. Consider Redis Cluster for high availability. Monitor memory usage—Redis holds everything in RAM. ## HubSpot CRM Integration HubSpot offers a REST API and webhooks for real-time sync. Authentication uses private apps (access token) or OAuth for public apps. The CRM API covers contacts, companies, deals, and tickets. Use the Search API for complex queries. Webhook subscriptions require a valid endpoint that responds to verification challenges. ## Xero Accounting Integration Xero uses OAuth 2.0. The API base is https://api.xero.com/api.xro/2.0/. Endpoints include Invoices, Contacts, Payments, and BankTransactions. Connections are tenant-specific—multi-tenant apps must handle organization switching. Rate limits: 60 calls per minute per organization. ## PostgreSQL Best Practices Use connection pooling (PgBouncer) for web applications. Index foreign keys and frequently queried columns. Avoid N+1 queries—use JOINs or batch loading. For large tables, consider partitioning by date. Always use parameterized queries to prevent SQL injection. ## Redis Caching Patterns Use Redis for session storage, rate limiting, and cache-aside patterns. Set TTLs on cached data to prevent stale reads. Consider Redis Cluster for high availability. Monitor memory usage—Redis holds everything in RAM. ## HubSpot CRM Integration HubSpot offers a REST API and webhooks for real-time sync. Authentication uses private apps (access token) or OAuth for public apps. The CRM API covers contacts, companies, deals, and tickets. Use the Search API for complex queries. Webhook subscriptions require a valid endpoint that responds to verification challenges. ## Xero Accounting Integration Xero uses OAuth 2.0. The API base is https://api.xero.com/api.xro/2.0/. Endpoints include Invoices, Contacts, Payments, and BankTransactions. Connections are tenant-specific—multi-tenant apps must handle organization switching. Rate limits: 60 calls per minute per organization. ## PostgreSQL Best Practices Use connection pooling (PgBouncer) for web applications. Index foreign keys and frequently queried columns. Avoid N+1 queries—use JOINs or batch loading. For large tables, consider partitioning by date. Always use parameterized queries to prevent SQL injection. ## Redis Caching Patterns Use Redis for session storage, rate limiting, and cache-aside patterns. Set TTLs on cached data to prevent stale reads. Consider Redis Cluster for high availability. Monitor memory usage—Redis holds everything in RAM. ## HubSpot CRM Integration HubSpot offers a REST API and webhooks for real-time sync. Authentication uses private apps (access token) or OAuth for public apps. The CRM API covers contacts, companies, deals, and tickets. Use the Search API for complex queries. Webhook subscriptions require a valid endpoint that responds to verification challenges. ## Xero Accounting Integration Xero uses OAuth 2.0. The API base is https://api.xero.com/api.xro/2.0/. Endpoints include Invoices, Contacts, Payments, and BankTransactions. Connections are tenant-specific—multi-tenant apps must handle organization switching. Rate limits: 60 calls per minute per organization. ## PostgreSQL Best Practices Use connection pooling (PgBouncer) for web applications. Index foreign keys and frequently queried columns. Avoid N+1 queries—use JOINs or batch loading. For large tables, consider partitioning by date. Always use parameterized queries to prevent SQL injection. ## Redis Caching Patterns Use Redis for session storage, rate limiting, and cache-aside patterns. Set TTLs on cached data to prevent stale reads. Consider Redis Cluster for high availability. Monitor memory usage—Redis holds everything in RAM. ## HubSpot CRM Integration HubSpot offers a REST API and webhooks for real-time sync. Authentication uses private apps (access token) or OAuth for public apps. The CRM API covers contacts, companies, deals, and tickets. Use the Search API for complex queries. Webhook subscriptions require a valid endpoint that responds to verification challenges. ## Xero Accounting Integration Xero uses OAuth 2.0. The API base is https://api.xero.com/api.xro/2.0/. Endpoints include Invoices, Contacts, Payments, and BankTransactions. Connections are tenant-specific—multi-tenant apps must handle organization switching. Rate limits: 60 calls per minute per organization. ## PostgreSQL Best Practices Use connection pooling (PgBouncer) for web applications. Index foreign keys and frequently queried columns. Avoid N+1 queries—use JOINs or batch loading. For large tables, consider partitioning by date. Always use parameterized queries to prevent SQL injection. ## Redis Caching Patterns Use Redis for session storage, rate limiting, and cache-aside patterns. Set TTLs on cached data to prevent stale reads. Consider Redis Cluster for high availability. Monitor memory usage—Redis holds everything in RAM. ## HubSpot CRM Integration HubSpot offers a REST API and webhooks for real-time sync. Authentication uses private apps (access token) or OAuth for public apps. The CRM API covers contacts, companies, deals, and tickets. Use the Search API for complex queries. Webhook subscriptions require a valid endpoint that responds to verification challenges. ## Xero Accounting Integration Xero uses OAuth 2.0. The API base is https://api.xero.com/api.xro/2.0/. Endpoints include Invoices, Contacts, Payments, and BankTransactions. Connections are tenant-specific—multi-tenant apps must handle organization switching. Rate limits: 60 calls per minute per organization. ## PostgreSQL Best Practices Use connection pooling (PgBouncer) for web applications. Index foreign keys and frequently queried columns. Avoid N+1 queries—use JOINs or batch loading. For large tables, consider partitioning by date. Always use parameterized queries to prevent SQL injection. ## Redis Caching Patterns Use Redis for session storage, rate limiting, and cache-aside patterns. Set TTLs on cached data to prevent stale reads. Consider Redis Cluster for high availability. Monitor memory usage—Redis holds everything in RAM. ## HubSpot CRM Integration HubSpot offers a REST API and webhooks for real-time sync. Authentication uses private apps (access token) or OAuth for public apps. The CRM API covers contacts, companies, deals, and tickets. Use the Search API for complex queries. Webhook subscriptions require a valid endpoint that responds to verification challenges. ## Xero Accounting Integration Xero uses OAuth 2.0. The API base is https://api.xero.com/api.xro/2.0/. Endpoints include Invoices, Contacts, Payments, and BankTransactions. Connections are tenant-specific—multi-tenant apps must handle organization switching. Rate limits: 60 calls per minute per organization. ## PostgreSQL Best Practices Use connection pooling (PgBouncer) for web applications. Index foreign keys and frequently queried columns. Avoid N+1 queries—use JOINs or batch loading. For large tables, consider partitioning by date. Always use parameterized queries to prevent SQL injection. ## Redis Caching Patterns Use Redis for session storage, rate limiting, and cache-aside patterns. Set TTLs on cached data to prevent stale reads. Consider Redis Cluster for high availability. Monitor memory usage—Redis holds everything in RAM. ## HubSpot CRM Integration HubSpot offers a REST API and webhooks for real-time sync. Authentication uses private apps (access token) or OAuth for public apps. The CRM API covers contacts, companies, deals, and tickets. Use the Search API for complex queries. Webhook subscriptions require a valid endpoint that responds to verification challenges. ## Xero Accounting Integration Xero uses OAuth 2.0. The API base is https://api.xero.com/api.xro/2.0/. Endpoints include Invoices, Contacts, Payments, and BankTransactions. Connections are tenant-specific—multi-tenant apps must handle organization switching. Rate limits: 60 calls per minute per organization. ## PostgreSQL Best Practices Use connection pooling (PgBouncer) for web applications. Index foreign keys and frequently queried columns. Avoid N+1 queries—use JOINs or batch loading. For large tables, consider partitioning by date. Always use parameterized queries to prevent SQL injection. ## Redis Caching Patterns Use Redis for session storage, rate limiting, and cache-aside patterns. Set TTLs on cached data to prevent stale reads. Consider Redis Cluster for high availability. Monitor memory usage—Redis holds everything in RAM. ## HubSpot CRM Integration HubSpot offers a REST API and webhooks for real-time sync. Authentication uses private apps (access token) or OAuth for public apps. The CRM API covers contacts, companies, deals, and tickets. Use the Search API for complex queries. Webhook subscriptions require a valid endpoint that responds to verification challenges. ## Xero Accounting Integration Xero uses OAuth 2.0. The API base is https://api.xero.com/api.xro/2.0/. Endpoints include Invoices, Contacts, Payments, and BankTransactions. Connections are tenant-specific—multi-tenant apps must handle organization switching. Rate limits: 60 calls per minute per organization. ## PostgreSQL Best Practices Use connection pooling (PgBouncer) for web applications. Index foreign keys and frequently queried columns. Avoid N+1 queries—use JOINs or batch loading. For large tables, consider partitioning by date. Always use parameterized queries to prevent SQL injection. ## Redis Caching Patterns Use Redis for session storage, rate limiting, and cache-aside patterns. Set TTLs on cached data to prevent stale reads. Consider Redis Cluster for high availability. Monitor memory usage—Redis holds everything in RAM. ## HubSpot CRM Integration HubSpot offers a REST API and webhooks for real-time sync. Authentication uses private apps (access token) or OAuth for public apps. The CRM API covers contacts, companies, deals, and tickets. Use the Search API for complex queries. Webhook subscriptions require a valid endpoint that responds to verification challenges. ## Xero Accounting Integration Xero uses OAuth 2.0. The API base is https://api.xero.com/api.xro/2.0/. Endpoints include Invoices, Contacts, Payments, and BankTransactions. Connections are tenant-specific—multi-tenant apps must handle organization switching. Rate limits: 60 calls per minute per organization. ## PostgreSQL Best Practices Use connection pooling (PgBouncer) for web applications. Index foreign keys and frequently queried columns. Avoid N+1 queries—use JOINs or batch loading. For large tables, consider partitioning by date. Always use parameterized queries to prevent SQL injection. ## Redis Caching Patterns Use Redis for session storage, rate limiting, and cache-aside patterns. Set TTLs on cached data to prevent stale reads. Consider Redis Cluster for high availability. Monitor memory usage—Redis holds everything in RAM. ## HubSpot CRM Integration HubSpot offers a REST API and webhooks for real-time sync. Authentication uses private apps (access token) or OAuth for public apps. The CRM API covers contacts, companies, deals, and tickets. Use the Search API for complex queries. Webhook subscriptions require a valid endpoint that responds to verification challenges. ## Xero Accounting Integration Xero uses OAuth 2.0. The API base is https://api.xero.com/api.xro/2.0/. Endpoints include Invoices, Contacts, Payments, and BankTransactions. Connections are tenant-specific—multi-tenant apps must handle organization switching. Rate limits: 60 calls per minute per organization. ## PostgreSQL Best Practices Use connection pooling (PgBouncer) for web applications. Index foreign keys and frequently queried columns. Avoid N+1 queries—use JOINs or batch loading. For large tables, consider partitioning by date. Always use parameterized queries to prevent SQL injection. ## Redis Caching Patterns Use Redis for session storage, rate limiting, and cache-aside patterns. Set TTLs on cached data to prevent stale reads. Consider Redis Cluster for high availability. Monitor memory usage—Redis holds everything in RAM. ## HubSpot CRM Integration HubSpot offers a REST API and webhooks for real-time sync. Authentication uses private apps (access token) or OAuth for public apps. The CRM API covers contacts, companies, deals, and tickets. Use the Search API for complex queries. Webhook subscriptions require a valid endpoint that responds to verification challenges. ## Xero Accounting Integration Xero uses OAuth 2.0. The API base is https://api.xero.com/api.xro/2.0/. Endpoints include Invoices, Contacts, Payments, and BankTransactions. Connections are tenant-specific—multi-tenant apps must handle organization switching. Rate limits: 60 calls per minute per organization. ## PostgreSQL Best Practices Use connection pooling (PgBouncer) for web applications. Index foreign keys and frequently queried columns. Avoid N+1 queries—use JOINs or batch loading. For large tables, consider partitioning by date. Always use parameterized queries to prevent SQL injection. ## Redis Caching Patterns Use Redis for session storage, rate limiting, and cache-aside patterns. Set TTLs on cached data to prevent stale reads. Consider Redis Cluster for high availability. Monitor memory usage—Redis holds everything in RAM. ## HubSpot CRM Integration HubSpot offers a REST API and webhooks for real-time sync. Authentication uses private apps (access token) or OAuth for public apps. The CRM API covers contacts, companies, deals, and tickets. Use the Search API for complex queries. Webhook subscriptions require a valid endpoint that responds to verification challenges. ## Xero Accounting Integration Xero uses OAuth 2.0. The API base is https://api.xero.com/api.xro/2.0/. Endpoints include Invoices, Contacts, Payments, and BankTransactions. Connections are tenant-specific—multi-tenant apps must handle organization switching. Rate limits: 60 calls per minute per organization. ## PostgreSQL Best Practices Use connection pooling (PgBouncer) for web applications. Index foreign keys and frequently queried columns. Avoid N+1 queries—use JOINs or batch loading. For large tables, consider partitioning by date. Always use parameterized queries to prevent SQL injection. ## Redis Caching Patterns Use Redis for session storage, rate limiting, and cache-aside patterns. Set TTLs on cached data to prevent stale reads. Consider Redis Cluster for high availability. Monitor memory usage—Redis holds everything in RAM. ## HubSpot CRM Integration HubSpot offers a REST API and webhooks for real-time sync. Authentication uses private apps (access token) or OAuth for public apps. The CRM API covers contacts, companies, deals, and tickets. Use the Search API for complex queries. Webhook subscriptions require a valid endpoint that responds to verification challenges. ## Xero Accounting Integration Xero uses OAuth 2.0. The API base is https://api.xero.com/api.xro/2.0/. Endpoints include Invoices, Contacts, Payments, and BankTransactions. Connections are tenant-specific—multi-tenant apps must handle organization switching. Rate limits: 60 calls per minute per organization. ## PostgreSQL Best Practices Use connection pooling (PgBouncer) for web applications. Index foreign keys and frequently queried columns. Avoid N+1 queries—use JOINs or batch loading. For large tables, consider partitioning by date. Always use parameterized queries to prevent SQL injection. ## Redis Caching Patterns Use Redis for session storage, rate limiting, and cache-aside patterns. Set TTLs on cached data to prevent stale reads. Consider Redis Cluster for high availability. Monitor memory usage—Redis holds everything in RAM. ## HubSpot CRM Integration HubSpot offers a REST API and webhooks for real-time sync. Authentication uses private apps (access token) or OAuth for public apps. The CRM API covers contacts, companies, deals, and tickets. Use the Search API for complex queries. Webhook subscriptions require a valid endpoint that responds to verification challenges. ## Xero Accounting Integration Xero uses OAuth 2.0. The API base is https://api.xero.com/api.xro/2.0/. Endpoints include Invoices, Contacts, Payments, and BankTransactions. Connections are tenant-specific—multi-tenant apps must handle organization switching. Rate limits: 60 calls per minute per organization. ## PostgreSQL Best Practices Use connection pooling (PgBouncer) for web applications. Index foreign keys and frequently queried columns. Avoid N+1 queries—use JOINs or batch loading. For large tables, consider partitioning by date. Always use parameterized queries to prevent SQL injection. ## Redis Caching Patterns Use Redis for session storage, rate limiting, and cache-aside patterns. Set TTLs on cached data to prevent stale reads. Consider Redis Cluster for high availability. Monitor memory usage—Redis holds everything in RAM. ## HubSpot CRM Integration HubSpot offers a REST API and webhooks for real-time sync. Authentication uses private apps (access token) or OAuth for public apps. The CRM API covers contacts, companies, deals, and tickets. Use the Search API for complex queries. Webhook subscriptions require a valid endpoint that responds to verification challenges. ## Xero Accounting Integration Xero uses OAuth 2.0. The API base is https://api.xero.com/api.xro/2.0/. Endpoints include Invoices, Contacts, Payments, and BankTransactions. Connections are tenant-specific—multi-tenant apps must handle organization switching. Rate limits: 60 calls per minute per organization. ## PostgreSQL Best Practices Use connection pooling (PgBouncer) for web applications. Index foreign keys and frequently queried columns. Avoid N+1 queries—use JOINs or batch loading. For large tables, consider partitioning by date. Always use parameterized queries to prevent SQL injection. ## Redis Caching Patterns Use Redis for session storage, rate limiting, and cache-aside patterns. Set TTLs on cached data to prevent stale reads. Consider Redis Cluster for high availability. Monitor memory usage—Redis holds everything in RAM. ## HubSpot CRM Integration HubSpot offers a REST API and webhooks for real-time sync. Authentication uses private apps (access token) or OAuth for public apps. The CRM API covers contacts, companies, deals, and tickets. Use the Search API for complex queries. Webhook subscriptions require a valid endpoint that responds to verification challenges. ## Xero Accounting Integration Xero uses OAuth 2.0. The API base is https://api.xero.com/api.xro/2.0/. Endpoints include Invoices, Contacts, Payments, and BankTransactions. Connections are tenant-specific—multi-tenant apps must handle organization switching. Rate limits: 60 calls per minute per organization. ## PostgreSQL Best Practices Use connection pooling (PgBouncer) for web applications. Index foreign keys and frequently queried columns. Avoid N+1 queries—use JOINs or batch loading. For large tables, consider partitioning by date. Always use parameterized queries to prevent SQL injection. ## Redis Caching Patterns Use Redis for session storage, rate limiting, and cache-aside patterns. Set TTLs on cached data to prevent stale reads. Consider Redis Cluster for high availability. Monitor memory usage—Redis holds everything in RAM.