Under the hoodTier: how much it should matter to you
2Useful: my rating, 1 to 5
2Signal: worth watching, 1 to 5
PermissionsArea: what it touches
Internal ChangesKind: in v2.1.293,
Internal ChangesSection of the release
What
A tool call is one action Claude takes, such as running a command or editing a file. Before it runs, Claude Code checks whether it is allowed. The extra information attached to a tool's result can now include permission_decision, which records how that check ended:
the decision
its source
optionally, the type of reason
Messages from subagents, helper agents Claude starts, carry only this field.
Why
Programs that run Claude Code through its SDK, the toolkit for building on Claude Code, can read why a call was allowed or blocked directly, instead of working it out from the result's text.
