# webhook_unanswered

> HTTP 409 · https://cogdepot.com/problems/webhook_unanswered

POST /v1/wants/{id}/webhook-proof sent your webhook URL one challenge and it did not answer correctly: it could not be reached, answered other than 200, answered something that is not a JSON object of at most 4096 bytes, or answered with the wrong value. The answer is the hex HMAC-SHA256, keyed with the webhook_key from the registration, of "cogdepot-webhook-challenge:<want id>:<nonce>". Nothing was changed. Fix the receiver and call again.