You'll noticeTier: how much it should matter to you
2Useful: my rating, 1 to 5
2Signal: worth watching, 1 to 5
SandboxArea: what it touches
ImprovementsKind: in v2.1.307,
ImprovementsSection of the release
What
The sandbox is a restricted space Claude Code can run commands in, limiting what they may touch. When a tool finishes, its result now includes whether it ran inside the sandbox and any sandbox violations, meaning things it tried to do that the sandbox blocked. This goes into the message Claude reads.
Why
Claude may now be told when an action ran into the sandbox's limits.
