How to debug Stripe webhooks without re-triggering payments

Stripe makes it easy to create test events, but the painful bugs usually show up in the exact request your app received: the raw body, the signature header, the endpoint secret, and the response your handler returned.

If every fix requires another checkout, invoice, or subscription state change, the feedback loop becomes slow and noisy. You want to preserve one real failing delivery, then replay that exact request until the handler behaves correctly.

Before editing your Stripe handler, capture the full incoming delivery. The raw request matters because Stripe signature validation depends on the exact body bytes, not a parsed-and-reformatted JSON object.

Save the headers, body, method, response code, and response body in one place. That gives you a stable debugging artifact instead of a memory of what appeared in three different logs.

Many Stripe webhook bugs are not business-logic bugs at all. They are raw-body parsing issues, timestamp tolerance mismatches, or endpoint-secret mixups between local, staging, and production.

Debug those assumptions separately from the handler. Confirm which secret belongs to the endpoint, verify your framework is exposing the raw request body, and only then move on to business logic.

Once the request is captured, replay it to localhost or staging after every handler change. This is the shortest path from “I think I fixed it” to “the exact failing event now succeeds.”

A replay loop also keeps your Stripe account clean. You do not need to create another payment, subscription, or invoice just to retest one branch in your handler.

After the handler succeeds, test the unhappy paths too. Return a 500, a timeout-like response, or a malformed body in a controlled environment so you know how your integration behaves when Stripe retries.

That final step turns webhook debugging from a one-off scramble into a repeatable workflow your team can use for the next integration incident.