You'll noticeTier: how much it should matter to you
3Useful: my rating, 1 to 5
3Signal: worth watching, 1 to 5
Agent TeamsArea: what it touches
ImprovementsKind: in v2.1.309,
ImprovementsSection of the release
What
Two changes:
When Claude Code starts a teammate (another Claude session working alongside it), the start command now includes a permissionRules option.
Registering a folder in a workspace that runs in the background is now rejected if the folder is not inside the workspace root, or if any part of its path starts with a dot, such as .git.
Why
Both changes tighten security. They limit which folders a background workspace can take on and pass permission rules on to teammates.