You'll noticeTier: how much it should matter to you
2Useful: my rating, 1 to 5
2Signal: worth watching, 1 to 5
SDKArea: what it touches
ImprovementsKind: in v2.1.311,
ImprovementsSection of the release
What
A tool is an action Claude can take, such as reading a file or running a command. Results now carry a list of the tools that were used, whenever that list is not empty.
The saved record of a session now has a new kind of entry for tools used. When there are several such entries, the most recent one wins.
Why
Session records and results now include data about which tools were used.
