Stripe Integration for Express.js APIs
Clean middleware patterns for Stripe routes, webhook verification, and error handling.
Express's middleware model needs specific handling for Stripe webhooks: the raw request body must bypass JSON body-parsing middleware for signature verification to work, a detail commonly missed.
Express's middleware model has one specific interaction with Stripe that breaks almost every first webhook implementation: `express.json()` (or any global body-parser middleware) consumes and parses the raw request body before your handler ever sees it, and Stripe's signature verification requires the exact, unparsed raw bytes to validate correctly.
The Raw-Body Webhook Fix, and What Else Matters
- Apply `express.raw()` scoped to just the webhook route, before any global JSON body-parser middleware runs against it
- Verify the signature against that raw buffer using the Stripe SDK's `webhooks.constructEvent`, not a manually parsed body
- Rate-limit Stripe-facing routes to prevent abuse, while still accepting Stripe's legitimate webhook retries
- Return a 2xx response quickly, then process the event: a slow synchronous handler risks Stripe's delivery timeout and triggering unnecessary retries
This single body-parsing detail accounts for a large share of "webhooks work locally but fail in production" reports we see: it's an easy fix once diagnosed, and a genuinely confusing failure mode if you don't already know to look for it.
Frequently Asked Questions
Related Reading
Stripe Webhooks in Express: The express.json() Trap
One line of body-parser middleware silently breaks every signature check. Here's the correct route ordering.
Subscriptions in Django with Stripe Billing
Let Stripe own the billing state and Django own the entitlement. Mixing the two is where it goes wrong.
Stripe in PHP: Checkout Sessions and Webhook Verification Done Right
The raw-body problem bites PHP integrations harder than most. Here's the correct shape.
Get Stripe Integrated Into Your Express Project
Get a scoped estimate within 24 hours, no obligation to proceed.