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Sweep 22 Oct 2026 · 04:32Z Build v2.1.308 527 read Stable v2.1.308 Latest v2.1.308 Next v2.1.308 Feeds RSS JSON llms.txt llms-full.txt Unofficial
HomeDocsModel Context Protocol 18 Oct 2026
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SEP-2640: Skills Extension changedseps/2640-skills-extension

Nearest release: v2.1.303, published 19 hours after 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 18 Oct 2026 02:02 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 18 Oct 2026 02:07 UTC.

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First seen 13 Sep 2026 this site's first read of the page
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653653## References
654654 
655655* [Agent Skills specification](https://agentskills.io/specification)
656* [SEP-2133]: Extensions
657* [SEP-2549]: TTL for list results
658* [SEP-2076]: Agent Skills as first-class primitive (alternative approach)
656* [SEP-2133][]: Extensions
657* [SEP-2549][]: TTL for list results
658* [SEP-2076][]: Agent Skills as first-class primitive (alternative approach)
659659* [Skills Over MCP Working Group charter](https://modelcontextprotocol.io/community/skills-over-mcp/charter)
660660* [Decision Log](https://github.com/modelcontextprotocol/ext-skills/blob/main/docs/decisions.md): Working Group decisions and rationale
661661* [Experimental Findings](https://github.com/modelcontextprotocol/ext-skills/blob/main/docs/archive/experimental-findings.md): results from implementations (WIP)
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