Webhook Architecture Overview Webhooks are HTTP callbacks used by commerce platforms (Shopify, Stripe) to push real-time event notifications to your application. Reliable webhook infrastructure requires: HMAC signature verification to prevent spoofed events, idempotent handlers that tolerate duplicate delivery, exponential backoff retry logic, and a dead-letter queue for events that exhaust all retries. This skill covers building a reliable webhook receiver and, for custom platforms, a webhook sender using the Outbox Pattern. When to Use This Skill - When receiving webhooks from Shopify, Stri…