Local Runtime

Local runtime runs the agent directly in your project directory—the same directory you use for development. There's no worktree isolation; the agent works in your actual working copy.

When to Use

• Quick one-off tasks in your current working copy
• Reviewing agent work alongside your own uncommitted changes
• Projects where worktrees don't work well (e.g., some monorepos)

Caveats

⚠️ No isolation: Multiple local workspaces for the same project see and modify the same files. Running them simultaneously can cause conflicts. mux shows a warning when another local workspace is actively streaming.

⚠️ Affects your working copy: Agent changes happen in your actual project directory.

Filesystem

The workspace path is your project directory itself. No additional directories are created.