sombre

For macOS.
Phone in any browser.

Step away. The session comes with you.

Sombre runs Claude Code and Codex on your Mac. Open the same conversation on your phone to answer questions, approve changes, and keep work moving while you're out.

An example session. A developer asks the agent on their Mac to fix a flaky checkout test, then continues on their phone, approves a test run, and gets the fix confirmed.

How it works

From your desk to your pocket in three steps

  1. Start a session on your Mac

    Open a project and pick Claude Code or Codex. The agent runs on your machine, with your files and your tools.

  2. Open it on your phone

    Scan the code on screen or open your sombre.si link. It runs in the browser, so there's nothing to install.

  3. Keep going from anywhere

    Reply, approve commands, and read diffs as they stream in. When you're back at your desk, it's all there.

Session history

Every step, from either screen

One history per session. Scrub through it to replay what the agent did on your Mac and what you did from your phone.

Continued on phone. From your phone at 12:08. Opened the session from sombre.si on the walk to lunch.

Why Sombre

Built for the walk to lunch

  • Your code stays on your Mac

    The agent runs locally. Your phone sends messages and receives updates, nothing more.

  • Approve changes in one tap

    When the agent wants to run a command or edit a file, you decide from wherever you are.

  • One conversation, two screens

    Every search, file read, and step the agent takes streams to both screens as it happens.

  • Bring your own agent

    Use Claude Code or Codex, the agents you already know, with the setup you already have.

Questions

Good to know

Does my Mac need to stay on?

Yes. The agent runs on your Mac, so it needs to be awake and online while you work from your phone.

Do I need to install anything on my phone?

No. Sessions open in your phone's browser. You can add Sombre to your home screen if you want it one tap away.

Which agents does it work with?

Claude Code and Codex at launch, with more to follow.

When can I try it?

Sombre is in early development. Ask for early access and we'll email you when the first build is ready.