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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.

← All of v2.1.238 Home All releases ←olderv2.1.237 v2.1.239newer→
Claude Code v2.1.238

MCP servers record which agent added them

Under the hood
Useful2 Signal3
MCP

Each MCP server config now records which agent declared it and where.

What

Normalised MCP server config now carries the agent that declared it and where it was declared, and servers created at runtime are stored with a dynamic scope plus that attribution.

Evidence

agentSource

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

See this entry in the whole of v2.1.238 →