| Status | Meaning |
|---|---|
| 400 / 422 | Invalid request or fail-closed evidence gate |
| 401 | Missing, invalid, revoked, or expired key |
| 402 | Insufficient credits |
| 403 | Missing scope or enterprise connector |
| 404 | The requested serving record is absent |
| 429 | Minute or daily limit exceeded |
| 502 / 503 | Reviewed upstream evidence service unavailable |
Platform guides
Errors
Stable status codes and fail-closed behavior.
All non-success statuses refund reserved credits.