Lesson 4 · plug APIs, Auth & Webhooks

Webhooks & Signature Verification

Receive events securely and handle them idempotently.

Before you start

Polling asks 'anything new?' a thousand times for one yes. A webhook is the platform calling you. Which means your endpoint is public, so every delivery must be cryptographically verified before you act on it.

5 exercises·up to 74 XP·5/5 hearts