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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 v2.1.221 Home All releases ←olderv2.1.220 v2.1.222newer→
Claude Code v2.1.221

ReconnectMcp output tells the model cached servers are usable right away

You'll notice
Useful2 Signal0
MCP

Claude's MCP status summary now lists cached servers and notes their tools are callable immediately.

What

The MCP reconnect and status summary the model sees gained a Cached line alongside Connected, Failed and Still connecting.

Details
  • The line explains that those servers' tools can be called now and that the connection is made lazily on first call.
  • Subject to the same discovery-cache gate as the cached state; the list is empty when no cached servers exist.
Evidence

Cached (their tools are available now; connects on first call):

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 →