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Sweep 29 Sep 2026 · 18:10Z Build v2.1.285 506 read Stable v2.1.280 Latest v2.1.285 Next v2.1.285 Feeds RSS JSON llms.txt llms-full.txt Unofficial
One change · mcp

File Uploads Charter changedcommunity/working-groups/file-uploads

Nearest release: v2.1.284, published 5 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 22:50 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 23:07 UTC.

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First seen 14 Aug 2026 this site's first read of the page
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4343* **MCP Apps WG** — embedded app UIs may surface their own file pickers; the descriptor format
4444 should be reusable in that context.
4545* **Security WG** — host-side validation requirements for user-supplied file content (the SEP
46 references [OWASP ASVS V5](https://owasp.org/www-project-application-security-verification-standard/)
46 references [OWASP ASVS V5](https://owasp.org/projects/asvs)
4747 for general upload hygiene).
4848* **Tool Annotations IG** — file input descriptors are a form of input-parameter metadata and should
4949 remain consistent with the broader annotation taxonomy.
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