You'll noticeTier: how much it should matter to you
3Useful: 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 add-ons that give Claude extra tools. Each tool describes the input it expects, and the Anthropic API rejects some of those descriptions. Tools like that are not given to Claude. The detail view for an MCP server now has a panel for them:
It says how many tools Claude was not given, and why.
It names each one.
It tells you to choose Reconnect once the server is fixed.
If the list is long, it is cut short to fit your terminal window.
Why
Before, these tools just did not appear and nothing explained why. Now you can see which ones are missing and what to do once the server is fixed.