What this error usually means
Moonshot AI returning 401 / signature invalid should not be judged from the message alone. Cross-check key shape, Base URL, balance, model permission, region/IP, and visible model list.
- Provider: Moonshot AI
- Error type: signature invalid
- Status code: 401
Next action
signature invalid should not only show failed. The console should return the next move: refill balance, change Base URL, switch model, add permission, change egress IP, hold listing, or monitor.
- Read-only check. Detection data burns after 5 minutes.
- China provider route
- Kimi K2 0711 · Kimi K2 0905 · Kimi K2.5