You'll noticeTier: how much it should matter to you
2Useful: my rating, 1 to 5
2Signal: worth watching, 1 to 5
PermissionsArea: what it touches
ImprovementsKind: in v2.1.280,
ImprovementsSection of the release
What
Claude Code now shows a specific message when a tool call is cancelled partway through by a safety monitor: "A safety monitor blocked this turn, so this tool call was cancelled. If it had already started, some of its effects may have happened." A new helper also detects this specific type of API error.
Why
This gives users and Claude a clear, specific explanation when a safety monitor interrupts a tool call, including the important warning that some effects of the cancelled call may already have taken place.
