Webhook Handler Patterns

This is the foundational skill you want before implementing any webhook endpoint. It teaches the critical three-step sequence: verify the signature first using the raw body, parse the payload second, then handle it idempotently third. Most developers get this order wrong and end up with security holes or duplicate processing. Built by Hookdeck, it covers practical patterns for idempotency checks, proper HTTP status codes for retry behavior, and framework-specific gotchas in Express, Next.js, and FastAPI. The quick reference tables are genuinely helpful. If you're writing webhook handlers in production, start here before jumping to provider-specific skills.