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 v2.1.321,
Internal ChangesSection of the release
What
MCP servers are outside programs that give Claude Code extra tools and resources. Resources are files or data a server makes available. The tools that list resources, read a resource folder and read a resource now come back with a follow-up action as well as their data. That action runs once the result has been saved into the conversation, and it is only attached when there are resources or contents to return.
Why
This is groundwork that lets Claude Code do something after an MCP resource result lands. It does not change what the tools return.
