What
The Agent tool's isolation parameter now accepts "remote" in addition to "worktree". This launches the agent in a remote cloud (CCR) environment, always as a background task.
Usage
// In a skill or agent prompt instructing Agent tool use:
isolation: "remote"Details
- Always runs in the background; you are notified when it completes
- Remote agents run against the repository's default branch if the current local branch is not pushed to origin
- Not available in all contexts: if CCR is unavailable, the tool reports
[remote agent] isolation:'remote' is unavailable - A local agent context or no git root causes automatic fallback to other isolation modes
Evidence
Remote agent branch check (search for "[remote agent] local branch '", "isolation:'remote' is unavailable", "CLAUDE_CODE_REMOTE_SESSION_ID")
Strings lifted out of the shipped bundle, so the claim above can be checked against them.