Port Detection

Codemux automatically detects TCP ports listening on your machine and displays them in the sidebar.

How It Works

The backend periodically scans for listening TCP ports. Each detected port shows:

• Port number
• Process name — The process that opened the port
• PID — Process ID
• Workspace association — If the port was opened by a process in a specific workspace

Ports appear in the Ports section of the sidebar, grouped by workspace when possible.

Actions

Right-click or hover a port badge to:

• Open in Browser — Opens http://localhost:{port} in the embedded browser pane
• Kill — Terminates the process listening on the port

Runtime Only

Port detection is runtime-only. Detected ports are not persisted — they're rescanned on each app launch and when workspace state changes.