You'll noticeTier: how much it should matter to you
2Useful: my rating, 1 to 5
1Signal: worth watching, 1 to 5
Remote ControlArea: what it touches
RemovedKind: in v2.1.300,
RemovedSection of the release
What
Remote control is the feature that lets a Claude Code session be driven from elsewhere. It changes in two ways:
A sandbox option is no longer passed to the sessions it starts, and it is no longer included in its start-up log or usage data. A sandbox is a restricted environment that limits what commands can touch.
When renewing the sign-in token fails, Claude Code now takes into account where that token came from. If it cannot tell, it logs the warning "Could not read where the sign-in token came from".
Why
Failed sign-in renewals in remote control are now handled with knowledge of where the token came from. If you relied on remote control forwarding a sandbox option, note that it no longer does.