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Sweep 22 Oct 2026 · 21:04Z Build v2.1.309 528 read Stable v2.1.308 Latest v2.1.309 Next v2.1.309 Feeds RSS JSON llms.txt llms-full.txt Unofficial
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OAuth Client Credentials changedextensions/auth/oauth-client-credentials

Upstream edited this page at 28 Jul 2026 15:42 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 22 Oct 2026 20:37 UTC.

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385385> Support for this extension varies by client. Extensions are opt-in and never active by default.
386386 
387Check the [client matrix](/extensions/client-matrix) for current implementation status across MCP clients.
387Check the [client matrix](/extensions/client-matrix.md) for current implementation status across MCP clients.
388388 
389389## Related resources
390390 
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