Webhooks
render.failed
An API render failed: compilation error, storage failure, or an async job that exhausted its retries. Same delivery and signature rules as render.completed.
postWebhookrender.failed
Headers
webhook-idstring required
The event id (evt_...). Unique per delivery; use it for idempotency.
webhook-timestampstring required
Unix seconds.
webhook-signaturestring required
v1,<base64 HMAC-SHA256> per the Standard Webhooks spec.
Payload
Response
Acknowledged.
Changes
Webhooks have no change history: a webhook is keyed by its event name rather than a path and method, so no recorded change can name it.