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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 v2.1.221

Managed MCP servers carry discover support and a cached discover response

Under the hood
Useful2 Signal0
MCP

Managed MCP server configs now carry discovery data and strip more server-supplied junk before writing to your config files.

What

Server configs fetched from claude.ai now map two new upstream fields onto the local config, and the sanitizer strips more server-supplied blobs before anything is written to disk.

Details
  • discover_support and cached_discover_response map to discoverSupport and cachedDiscoverResponse.
  • Sanitization before writing config now removes cachedInitResponse, cachedDiscoverResponse, discoverSupport, eligible and ineligibleReason, on top of the existing tools and discoveryCache stripping, so these do not leak into user config files.
Evidence

cachedDiscoverResponse

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

See this entry in the whole of v2.1.221 →