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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 v2.1.222

MCP server panel explains a rejected claude.ai session token

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Useful4 Signal0
MCP

An MCP server rejecting your login token now tells you to run /login and reconnect.

/login
What

A connected MCP server whose discovery bearer token was rejected now tells you to re-login instead of showing a generic tools-list failure.

Details
  • A dedicated Issue line instructs you to run /login and then reconnect.
  • The generic tools-list error is suppressed in that specific case.
Evidence

claude.ai rejected the session token. Run /login, then reconnect.

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 v2.1.222 →