Build with AI. Stay in control.
Mars is an AI development workspace. Keep the goal, conversation, code and review together while an agent works alongside you.
See an agent team at work.
Explore the graph, inspect a task and trace messages between teams. Pause and restart at your own pace.
Local demonstration data. Drag the graph or open a context book while it runs.
Explore the workspace.
A closer look at the conversation, agent teams and the tools beside them.
A finished run beside the repository and the file it wrote.
The Mars 0.1.9 interface, with demonstration projects and run data.
Common questions.
Is Mars free?
Yes. Mars is free to use. You bring your own API key and pay your model provider for usage. There is no Mars subscription required for the app.
Where does my code go?
The app calls your configured model provider directly. Prompts, selected context and tool results may be sent to that provider. Sessions are saved on your computer; API keys use the OS credential store or environment variables. Connected tools have their own data flows.
What does public alpha mean?
The core workflows are available, and the product is still evolving. Expect rough edges. Keep backups, review changes and start with a project you can recover. Multi-hour reliability is still being evaluated.
Does autonomous mode give the agent admin access?
No. Bypass permissions removes Mars approval prompts; it does not grant additional operating-system or SSH privileges. The agent can use only the access available to its process or remote account.
Is the application open source?
Mars is proprietary software and free to use. Bringing your own key lets you choose the model provider; it does not change the application’s licence.
Which platforms can I use?
The Windows x64 desktop app is available. The CLI and macOS and Linux packages are in development. The download page lists the current version and availability for each platform. Check current availability →
Your next task, in one workspace.
Bring your own model key and keep the work, its evidence and your review in view.