Cloud agents. Local tools.

Your coding agents, running in the cloud. Connected to your Mac.
Close your laptop. Come back to the same work.

Get started on macOS See how it works

For macOS · Apple Silicon · Developer preview

Fennec · your cloud workspace

Codex~/repos/acme/website

› codex

Codex cloud session

~/.fen/sunny-spicy

Add a settings page and test the new flow.

I’ll follow the project conventions and verify the changes.

Read project instructions

Created a cloud checkout

Added the settings page

Working in the cloud...

› Your work stays here.

Persistent sessionCodex · sunny-spicy

Interactive preview · sample session, no commands are run.

Your familiar terminal.
A little more freedom.

Keep your agents, your editor, and your way of working.
Give the long-running work a place to stay.

Start as you always do.

Choose Cloud computer in Fennec, then run your agent from your terminal. Your local directory provides the starting context.

Let the cloud keep going.

Agent sessions stay on your cloud computer. Closing a terminal or your Mac doesn’t stop cloud-independent work.

Pick up the same thread.

Attach from your terminal or open the session in a browser. See what happened, add direction, and keep moving.

Your agents.
Room to keep working.

Code in one session. Review in another. One shared cloud computer, with your sessions just a click away.

Try the session preview

Your cloud sessions3 agents

Codex

Shipping the next feature.

Ready for review

Claude Code

Working through the details.

Tests passed

Exploring another approach.

Waiting for you

Your agents share a cloud computer. Each session keeps its place.

BUILT FOR YOUR WORKFLOW

Brain in the cloud.
Hands on your Mac.

Your agent can reach local files and tools through the access you approve.
Prepare a cloud checkout to keep working when your Mac is offline.

Meet the fen CLI Powered by Runta

A few things to know.

What is Fennec?

Fennec is a macOS companion and CLI for running coding agents in persistent cloud sessions. Manage sessions from the menu bar, attach in your terminal, or open a browser terminal.

Which agents does it support?

Cloud execution is currently available for Codex, Claude Code, and Pi. Other integrations shown in the app are coming soon.

What happens when I close my Mac?

The cloud session keeps running while its cloud computer is available. Work that already has its files and dependencies in the cloud can continue. Steps that need your Mac wait until it reconnects.

Are my files automatically mirrored?

No. Your starting directory provides context; it is not permission to copy your entire home folder. The agent selects task-relevant files, works in a cloud checkout, and reconciles changes back to your Mac.

What do I need to get started?

An Apple Silicon Mac, a Runta account, and supported model access. Fennec is currently a developer preview; public download details will be added when a release is available.

Does the website connect to a real agent?

No. The preview is an interactive illustration with sample sessions. It does not run commands, connect to your computer, or send a task to an AI service.

Are cloud and model usage included?

Cloud compute and model usage depend on your Runta account and model provider. They are separate from the macOS companion.

MEET FEN

A short command.
A long-running session.

Once Fennec is installed and signed in, choose an agent to run in the cloud. Your sessions are always one command away.

Developer preview. Source and setup instructions are available on GitHub.

› codex Start a cloud session
› fen Choose a session
› fen attach sunny-spicy Pick up where you left off
› fen stop sunny-spicy Stop when you’re done

Step away. Keep going.

Your work will be right where you left it.

Explore FennecmacOS · Apple Silicon