You'll noticeTier: how much it should matter to you
1Useful: my rating, 1 to 5
1Signal: worth watching, 1 to 5
SandboxArea: what it touches
ImprovementsKind: in v2.1.323,
ImprovementsSection of the release
What
The sandbox is the protected area Claude Code can run shell commands in, limiting what they can reach. When a command result carries a sandbox refusal, Claude Code now hands it to Claude prefixed with "For the user, not for you to act on:" and then the refusal text.
Why
Claude can see that the sandbox refused something, but is told to leave the decision to you rather than try to work around it.