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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 v2.1.238 20 Aug 2026

MCP servers can be turned off per project, with clearer failure reasons

Use it now

Useful4 Signal3

MCP

You can disable an MCP server per project, and failures now name the actual reason.

/mcp

What

An MCP server can now be marked disabled for a project and shows "Disabled in /mcp" with its own status badge instead of a generic failure. Connection errors gained three codes: POLICY_BLOCKED for a server blocked by enterprise managed policy, DISABLED for one turned off locally, and IDENTITY_CHANGED for a reconnect that raced an account switch.

Details

The blocked-by-policy row reports "Blocked by enterprise managed policy".
A reconnect cancelled by an account change gets a dedicated message and logs mcp_reconnect_identity_changed.

Evidence

Disabled for this project (re-enable via /mcp)

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 →