You'll noticeTier: how much it should matter to you
4Useful: my rating, 1 to 5
2Signal: worth watching, 1 to 5
MCPArea: what it touches
ImprovementsKind: in v2.1.238,
What probably matters to youSection of the release
What
When a tool call reaches an MCP server whose connection failed, the error message now appends the underlying failure text instead of ending at the server name. The suffix appears only when the server is in the failed state with an error recorded, and is suppressed entirely when the MCP subsystem is kill-switched; the stable second argument stays "MCP server not connected".
Details
Applied identically in both copies of the MCP client in the bundle.
Evidence
MCP server not connected
Strings lifted out of the shipped bundle, so the claim above can be checked against them.
