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 v2.1.323,
Internal ChangesSection of the release
What
An MCP server is an outside program that gives Claude extra tools. Such servers can send progress updates while a tool is working. Claude Code now forwards those updates to the connections registered for that server. The way Claude Code works out a tool result's status and status message has also been rewritten.
Why
This is likely to affect how progress is reported while MCP tools run.
