How I Built a Stripe Webhook in Node.js (Full Guide) Webhooks are essential for modern payment processing systems, and Stripe's implementation is particularly elegant. In this deep dive, I'll walk through building a production-grade Stripe webhook handler in Node.js with proper security, error handling, and queue processing. Understanding Stripe Webhook Architecture Stripe webhooks operate via HTTP POST requests to your endpoint when events occur in your Stripe account. The critical components: Event Object : JSON payload containing event metadata and relevant object data Signature Verification : HMAC-based security using your webhook secret Idempotency : Handling duplicate events safely Retry Logic : Built-in exponential backoff from Stripe Initial Setup First, install the Stripe Node.js library: npm install stripe @types/stripe Enter fullscreen mode Exit fullscreen mode Configure your environment variables (I recommend using dotenv ): STRIPE_SECRET_KEY=sk_test_... STRIPE_WEBHOOK_SECRET=whsec_...…