Under the hoodTier: how much it should matter to you
1Useful: my rating, 1 to 5
0Signal: worth watching, 1 to 5
ElsewhereArea: what it touches
Internal ChangesKind: in v2.1.314,
Internal ChangesSection of the release
What
A tool call is a single action Claude Code takes, such as running a command. When you cancel one in the interactive session, the error it returns now says the reason was a cancellation. Before, it carried no such label.
Separately, when auto mode blocks a report from a subagent, the warning no longer uses its own fixed text. A subagent is a helper agent that Claude Code starts to handle part of a task, and auto mode is the mode where Claude Code decides some permission questions itself. The warning now comes from shared wording, so it may read differently than before.
Why
A cancellation can now be told apart from other kinds of refusal, and blocked subagent reports use the same wording as other warnings.