What it means
pre-session /v1/auth/* without a PrintHook marker.
How to handle it
Send the documented X-Requested-With marker from the intended PrintHook client.
Wire contract
| Code | marker_required |
|---|---|
| Class | permission |
| HTTP status | 403 |
| Meta keys | None |
| Raised | Yes |
The response uses the standard {"error": {…}} envelope. Branch on error.code, not the human-readable message. Preserve request_id when reporting a failure.