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DisclaimerUnofficial, and not affiliated with Anthropic. Nearly all of this is read straight out of what ships: npm bundles, captured prompts, published docs. Anthropic's own notes go in verbatim, marked as theirs. The rest is my reading, and every entry carries the strings behind it. If one looks wrong, vote it down and say why.

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Claude Code v2.1.217 21 Jul 2026

Import Fingerprinting for MCP Servers and Slash Commands

Import proposals for MCP servers, slash commands, and GEMINI.md files now include a fingerprint field. The fingerprint is a stable hash of the entry's configuration, enabling detection of drift when an import item's config has changed since it was last imported.

Evidence

MCP server fingerprint (search for "fingerprint: JSON.stringify")

Strings lifted out of the shipped bundle, so the claim above can be checked against them.

See this entry in the whole of v2.1.217 →