Under the hoodTier: how much it should matter to you
2Useful: my rating, 1 to 5
2Signal: worth watching, 1 to 5
MCPArea: what it touches
ImprovementsKind: in v2.1.248,
ImprovementsSection of the release
What
Error responses that quote a server or tool name back to the caller now pass that name through a sanitizing helper instead of dropping it in raw, so an odd name cannot alter the message around it.
Details
Covers Server not found:, the enterprise managed-policy block message, Not a fully-qualified MCP tool name:, mcp_call cancelled by client: and MCP server not connected:.
Applies on every one of those paths with no condition. What exactly the helper strips is not visible from this code.
Evidence
MCP server not connected:
Strings lifted out of the shipped bundle, so the claim above can be checked against them.
