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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 v2.1.246

Permission prompts deny cleanly when the MCP server behind --permission-prompt-tool is gone

Use it now
Useful3 Signal2
Permissions

If the server behind --permission-prompt-tool disconnects, checks now deny cleanly instead of using a stale tool.

--permission-prompt-tool
What

If the MCP server that supplied the tool named by --permission-prompt-tool is no longer connected in the session, permission checks are now denied with a message saying so, instead of being resolved against a stale tool.

Details
  • The wrapper checks the server's connection state at check time, and is also constructed in a do-nothing "deny" form up front when the server is already absent at startup.
  • No flag involved; behaviour follows the session's MCP connection state.
Evidence

its MCP server is not connected in this session.

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

Related

Other releases about the same thing. Found by shared names or similar wording; neither means one caused the other.

See this entry in the whole of v2.1.246 →