Receive a signed status transition for one organization-scoped upload.
The callback URL and signing secret are configured per tenant through a secure channel. Consumers must deduplicate event_id, enforce immutable sequence ordering, and recover gaps through the canonical status endpoint.
postWebhookuploadStatusChanged
Payload
Response
Event accepted idempotently
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.