Authorization changedspecification/2025-06-18/basic/authorization
Nearest release: v2.1.284, published 4 hours before upstream edited the page. Shown because the two are within 24 hours of each other. Nothing here says the release caused the edit.
Upstream edited this page at 28 Sep 2026 21:57 UTC, give or take a minute or two: the time comes from Anthropic’s own sitemap rather than from a commit. This site recorded the change at 28 Sep 2026 22:07 UTC.
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Recorded edits3to this page, all time
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277277Servers **MUST** return appropriate HTTP status codes for authorization errors:
278278
279| Status Code | Description | Usage |
280| ----------- | ------------ | ------------------------------------------ |
281| 401 | Unauthorized | Authorization required or token invalid |
282| 403 | Forbidden | Invalid scopes or insufficient permissions |
283| 400 | Bad Request | Malformed authorization request |
279| Status Code | Description | Usage |
280| - | - | - |
281| 401 | Unauthorized | Authorization required or token invalid |
282| 403 | Forbidden | Invalid scopes or insufficient permissions |
283| 400 | Bad Request | Malformed authorization request |
284284
285285## Security Considerations
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