Building a Production-Grade Webhook Relay

SOUMABRATA GHOSH — Thu, 28 May 2026 15:23:29 +0000

The Problem
Webhooks are the glue of modern SaaS — Stripe sends payment events, GitHub pushes repository notifications, and Slack fires interactions. But each provider speaks a different dialect: different signature schemes, payload shapes, and delivery guarantees.

Every webhook integration is bespoke. You write a handler for Stripe, another for GitHub, a third for Slack. The handler must validate the signature, deduplicate retries, transform the payload to your internal schema, make an HTTP request to your backend, and retry if that request fails. Do this for N providers and you've written the same boilerplate N times.

A webhook relay service centralizes this:

Provider → Webhook Relay → Transform Pipeline → Delivery to N Destinations

The solutions

one ingestion endpoint for all providers. HMAC verification, idempotency dedup, and payload normalization are handled once, not N times. A transform pipeline (JMESPath + templates) converts each provider's format into your internal schema per route. Delivery to multiple destinations fans out automatically with circuit breakers, rate limiting, and exponential backoff — all configurable per route without writing a single line of handler code.
Provider A ─┐
Provider B ─┤ → /hooks/:endpoint_id → Transform → Destination 1
Provider C ─┘ │ → Destination 2
│ → Destination 3
└→ DLQ (if all retries fail)
Instead of N handlers, you get one endpoint, zero boilerplate, and built-in resilience.

DEV Community: SOUMABRATA GHOSH

Building a Production-Grade Webhook Relay