I've been building HookLens, a webhook debugging tool for inspecting, replaying, and diagnosing webhook deliveries in real time.
Built with Next.js, TypeScript, PostgreSQL, and Prisma.
Live: hooklens-app.vercel.app
A useful webhook debugger should make failure diagnosis repeatable. HookLens captures requests, supports replay, and compares failed deliveries with successful ones to surface likely differences.