Guides

Webhook reliability, written up one failure mode at a time.

Most "webhook testing" content is about receiving webhooks during local development — tunneling a URL to your laptop. These guides are about a different question: once your receiver is live, does it actually behave correctly under retries, duplicates, out-of-order delivery, and forged requests? That's what these cover.

• Webhook Idempotency: How to Actually Verify It Works

  Implementing an idempotency key is the easy part. Here's a concrete way to test whether it actually prevents duplicate processing — including the failure mode that passes a naive test and still double-charges in production.