Skip to content

Error code · HTTP 401

inference_hook_signature_invalid

Title
Inference hook signature invalid
What happened
The request has no webhook-id/webhook-timestamp/webhook-signature headers, its timestamp is more than 5 minutes off, or no signature matches the organization's signing secret.
How to fix it
Save the secret Claude showed when it last generated or rotated it; check the server clock.
Returned by
Gateway mode
Retry
Retrying the same request fails the same way.
Example response body
{
  "type": "https://maskflare.com/docs/errors/inference_hook_signature_invalid",
  "title": "Inference hook signature invalid",
  "status": 401,
  "code": "inference_hook_signature_invalid",
  "detail": "Save the secret Claude showed when it last generated or rotated it; check the server clock."
}

All error codes