You'll noticeTier: how much it should matter to you
2Useful: my rating, 1 to 5
1Signal: worth watching, 1 to 5
MCPArea: what it touches
ImprovementsKind: in v2.1.323,
ImprovementsSection of the release
What
MCP servers are outside programs that give Claude Code extra tools. Sometimes Claude asks for a tool on a server name that does not exist, for example because of a typo. Claude Code now looks for a likely match in the tools supplied through the SDK, the toolkit for running Claude Code from other software.
It needs exactly one such tool that has the same tool name and a server name no more than two letters different. When it finds one, the error message suggests that tool.
Why
Claude gets a clearer hint about how to recover when it mistypes a server name, so it is less likely to get stuck on the error.
