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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
One change · mcp

Key Changes changedspecification/2025-11-25/changelog

Nearest release: v2.1.305, published under an hour 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 20 Oct 2026 20:02 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 20 Oct 2026 20:07 UTC.

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11# Key Changes
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3<div id="enable-section-numbers" />
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53This document lists changes made to the Model Context Protocol (MCP) specification since
64the previous revision, [2025-06-18](/specification/2025-06-18).
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