You'll noticeTier: how much it should matter to you
1Useful: my rating, 1 to 5
2Signal: worth watching, 1 to 5
SandboxArea: what it touches
ImprovementsKind: in v2.1.323,
ImprovementsSection of the release
What
A sandbox is a restricted environment that limits what a session can reach on the network. When such a session fails to load the skills and plugins from your claude.ai account because of that restriction, Claude Code now shows a warning once. It says the skills and plugins may be missing from this session. It also explains that the session is sandboxed and signed in with a token (a sign-in credential) that is not its own.
Why
In cloud or sandboxed sessions, your account's skills could go missing with no explanation. Now you are told why.
