I Built a Webhook Debugger with Replay — No Install, No CLI (FastAPI + AWS Lambda)

The Problem Every Developer Hits You're integrating with Stripe. You set up a webhook endpoint. A payment comes in and... your handler crashes. Now you need to: See what Stripe actually sent Fix your code Trigger the same webhook again to test But you can't make another real payment just to test. And Stripe's webhook logs only show you the last few attempts. This happens with every webhook-based API — GitHub, Shopify, Twilio, SendGrid, Slack. What I Built HookCatcher — a webhook debugger with on