Guides
Practical webhook guides
Short, practical walkthroughs for the webhook problems that page you: a failed delivery, a risky replay, a 500 from your handler, a 429 from a burst.
Debug a failed webhook Practical steps to debug a failed webhook: inspect status and response body, verify signatures, rule out timeouts and idempotency, then replay with context. Read →Replay safely How to replay a failed webhook safely: when replay is safe vs risky, idempotency keys, duplicate side effects, verification, and a pre-replay checklist. Read →Webhook 500 errors Diagnose webhook 500 errors: what a 500 means, common backend causes, provider retry behaviour, inspecting the failed response, and safe replay. Read →Webhook rate limits Handle webhook rate limits and 429s: what 429 means, provider retry behaviour, endpoint rate limits, retry vs drop, and keeping throttled deliveries visible. Read →
Receiver guides
Build a webhook receiver by stack
Minimal, correct receivers that capture the raw body, verify the signature, and acknowledge fast — then point at HookWatch to capture and replay the real deliveries.
Node / Express Build a webhook receiver in Node.js/Express: raw-body capture, HMAC verification, fast 2xx acknowledgement, async processing. Read →Next.js Build a webhook handler in Next.js (App Router route handler): raw body access, signature verification, fast acknowledgement. Read →Go Build a webhook receiver in Go (net/http): raw-body read, constant-time HMAC verification with hmac.Equal, fast acknowledgement. Read →FastAPI Build a webhook receiver in FastAPI (Python): raw body access, hmac.compare_digest verification, BackgroundTasks for async processing. Read →
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