API · problem · HTTP 401
That key is not valid
This page is what the type field of the error points at. Every answer this API refuses carries one, and it is a stable address rather than a version of the docs.
The refusalinvalid-key
- When it happens
- A credential was presented and cannot be read, or is not a key this service knows. Sending an unreadable Authorization header counts: it is never treated as an anonymous request.
- What to do
- Use Authorization: Bearer <key>, or omit the credential entirely for the open tier. ?key= also works and is the weaker form — it travels into logs, history and cache keys.
The shape of the answerRFC 9457
Problem details: type, title, status and detail, plus whatever the individual failure can usefully add. The detail is written for the person reading the log, and names the parameter or the id that caused it.
| type | This page’s address. Stable. |
|---|---|
| title | That key is not valid |
| status | 401 |
| detail | What went wrong, in this request. |
The full list of failures, with the schema, is in the API documentation.