Under the hoodTier: how much it should matter to you
1Useful: my rating, 1 to 5
1Signal: worth watching, 1 to 5
MCPArea: what it touches
Internal ChangesKind: in v2.1.224,
Internal ChangesSection of the release
What
The check that the loaded MCP client module matches the MCP version Claude Code expects now reports the expected and observed versions to telemetry before raising the same error as before.
Evidence
MCP runtime accessor tripwire: resolved generation is v2 but the loaded client module does not carry MCP_TREE_ID v2
Strings lifted out of the shipped bundle, so the claim above can be checked against them.
