Errors
Webhook error troubleshooting
The webhook errors developers hit most — what each one means, the usual causes, and how to confirm the fix and recover the delivery.
Webhook 500 error What a webhook 500 error means, its common backend causes, how to inspect the failed response, and how to replay the delivery once the handler is fixed. Read →Webhook timeout Why webhook deliveries time out, how to acknowledge fast and process asynchronously, and how to replay timed-out deliveries. Read →Signature mismatch Why webhook signature verification fails (raw vs parsed body, wrong secret, encoding, timestamp tolerance) and how to confirm the fix. Read →429 rate limit What a webhook 429 means, how providers retry rate-limited deliveries, retry vs drop trade-offs, and keeping throttled deliveries visible. Read →Webhook not received Why a webhook is never received: wrong URL, unsubscribed event type, firewall/IP block, or an exhausted provider retry window — and how to confirm with a capture URL. Read →Webhook 404 Not Found Why webhook deliveries return 404: route prefix mismatches, trailing slash redirects, wrong HTTP method, or missing reverse proxy rules. Read →Webhook 401 Unauthorized Diagnose webhook 401 Unauthorized errors: global auth middleware blocking webhooks, stale API tokens, and missing Authorization headers. Read →Webhook SSL / TLS error Fix webhook TLS/SSL errors: expired certificates, missing intermediate CA certs, SNI issues, and secure tunneling for local dev. Read →
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