freeze

You can restrict file edits by setting a boundary that blocks Edit and Write operations outside a designated directory, keeping all session changes scoped to that specific folder.

An edit boundary prevents code drift by acting as a directory lock that intercepts tool inputs, ensuring modifications only happen within the specified folder and blocking accidental edits elsewhere.

To lock a folder in Claude Code, configure a PreToolUse hook that checks target paths against your specified directory, blocking any Edit or Write operations that fall outside the configured boundary.

Yes, directory lock boundaries sync to the brain so multiple agents can respect the same edit scope, maintaining consistent collaboration boundaries during shared sessions.

The edit boundary persists for the entire session after interactive setup, continuously enforcing the directory lock without requiring reconfiguration until the session terminates.

If a tool attempts to modify a file outside the freeze boundary, the PreToolUse hook checks the target path and blocks the Edit or Write operation to prevent scope drift.