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third-party-integration

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Integrate external APIs and services with error handling, retry logic, and data transformation. Use when connecting to payment processors, messaging services, analytics platforms, or other third-party providers.

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Third-Party Integration

Table of Contents

Overview

Build robust integrations with external services using standardized patterns for API calls, error handling, authentication, and data transformation.

When to Use

  • Integrating payment processors (Stripe, PayPal)
  • Using messaging services (SendGrid, Twilio)
  • Connecting to analytics platforms (Mixpanel, Segment)
  • Syncing with storage services (AWS S3, Google Cloud)
  • Integrating CRM systems (Salesforce, HubSpot)
  • Building multi-service architectures

Quick Start

Minimal working example:

const axios = require("axios");

class ThirdPartyClient {
  constructor(config) {
    this.apiKey = config.apiKey;
    this.baseUrl = config.baseUrl;
    this.timeout = config.timeout || 30000;
    this.retryAttempts = config.retryAttempts || 3;
    this.retryDelay = config.retryDelay || 1000;
    this.client = axios.create({
      baseURL: this.baseUrl,
      timeout: this.timeout,
      headers: {
        Authorization: `Bearer ${this.apiKey}`,
        "Content-Type": "application/json",
      },
    });
  }

  async request(method, endpoint, data = null, options = {}) {
    let lastError;

    for (let attempt = 0; attempt < this.retryAttempts; attempt++) {
      try {
        const response = await this.client({
// ... (see reference guides for full implementation)

Reference Guides

Detailed implementations in the references/ directory:

GuideContents
Third-Party Client WrapperThird-Party Client Wrapper
Payment Processor Integration (Stripe)Payment Processor Integration (Stripe)
Email Service Integration (SendGrid)Email Service Integration (SendGrid)
Python Third-Party IntegrationPython Third-Party Integration
Data TransformationData Transformation

Best Practices

✅ DO

  • Implement retry logic with exponential backoff
  • Validate webhook signatures
  • Log all API interactions
  • Use environment variables for secrets
  • Transform API responses to internal models
  • Implement circuit breakers for critical services
  • Monitor API quota and rate limits
  • Add proper error handling
  • Use timeouts appropriately
  • Test with sandbox/test API keys

❌ DON'T

  • Hardcode API keys
  • Retry all errors indefinitely
  • Log sensitive data
  • Trust unvalidated webhook data
  • Ignore rate limits
  • Make synchronous blocking calls
  • Expose vendor-specific details to clients
  • Skip error handling
  • Use production keys in tests