Your cmux terminals,
in your pocket.

Watch and drive your cmux terminals from any Android device.
See every workspace, open a live terminal, type into it, and get notified when a coding agent needs you.

Download the APK View on GitHub

Works with any cmux plan, with no sign-in or cloud required

What it does

A real terminal

A live view of any terminal. Pinch to zoom, scroll back through 2,000 lines of history, select and copy, and type with sticky Ctrl, Option and Shift keys.

Claude Code as a chat

Terminals running Claude Code show up as a conversation, with each tool call you can tap open. Type or dictate a reply, or interrupt Claude.

Notifications

cmux notifications such as "Claude is waiting for your input" reach your phone, even while the app is closed.

How it works

Android

HTTPS + WebSocket
over your private network

muxer

Unix socket

cmux

muxer is a small relay that runs on your Mac. It talks to cmux through its local control socket and listens on 127.0.0.1 only. Your phone reaches it through an HTTPS proxy that only your devices can reach. Tailscale is the easiest way; another VPN, a trusted local network, or a Cloudflare Tunnel behind Cloudflare Access also work.

Set up

You need cmux 0.65 or later on a Mac, and a way for your Android device to reach it over HTTPS.
The steps below use Tailscale, signed in on both.

Install the relay
```
brew install gantoine/tap/muxer
```
Let the relay talk to cmux

In cmux, open Settings › Automation, set socket access to Password, and set a password.

Start it at login and make it reachable

muxer install
tailscale serve --bg --https=8765 http://127.0.0.1:8765
muxer doctor

Pair your phone

Install the APK from the releases page, then scan the QR code this prints:
```
muxer pair
```

Security

The relay listens on 127.0.0.1 and forwards only the cmux commands the app uses.
Each phone gets its own random token. The computer stores only its SHA-256 hash; the phone keeps it encrypted in the Android Keystore.
Pairing codes work once, expire after 10 minutes, and stop after 10 wrong guesses.
The app accepts only HTTPS with certificates from a public authority.
Revoke a lost phone with muxer revoke.

Your cmux terminals,in your pocket.