2026.10.3
Webhooks following Standard Webhooks
Webhooks can now be verified with any Standard Webhooks library.
New
Every webhook now carries the headers
webhook-id,webhook-timestampandwebhook-signature.X-Signature-256stays.LIVCK now generates the secret and shows it to you once. Webhooks without a secret get one automatically. When you renew it, the old one keeps signing
webhook-signaturefor 24 hours.X-Signature-256switches right away.Every delivery shows its event ID and, on failure, the reason, such as timeout or DNS. Retries carry the same ID, so you can spot duplicate deliveries. Webhooks of your subscribers are now retried on failure too.
Fixed
A webhook now only counts as delivered when your endpoint answers with 2xx. Until now a redirect counted too, although your endpoint never got anything. We no longer follow redirects. If your endpoint redirects, enter the target address directly.
Test now sends a signed sample alert in the real format. Until now it sent an unsigned message that receivers checking the signature rejected.