Download MarsAI

15M FREE CREDITS

The coding agent, two shapes: a native desktop app and a terminal CLI. Both run on your machine, both sign in with one MarsAI key. Open source — star us on GitHub.

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MarsAI Desktop

full agent · file edits · git workflows · PRs · self-updating

Grab the installer for your platform from GitHub Releases. File names carry the version, e.g. mars-win-x64-1.0.0.exe.

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Windows

x64 · .exe installer

macOS

Apple Silicon · .dmg

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Linux

x64 & arm64 · deb/rpm/AppImage

• Windows: SmartScreen may warn (not code-signed yet) — More info → Run anyway.

• macOS: not notarized yet — System Settings → Privacy & Security → Open Anyway.

• Linux: deb/rpm/pacman install deps; AppImage needs gtk3/nss/atk-bridge/asound2.

• Updates itself in place — Settings → Updates.

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Mars CLI

terminal agent · device-code sign-in · subagents

Needs Node.js 18+. First run opens a browser to sign in — no key handling.

shell

npm install -g @mars_ai/marscli@latest
mars

Full manual: Mars CLI docs · source: github.com/localhost8083/marscli

Next step: get a key

Create a sk-mars-... key, paste it into the desktop app or run mars and sign in — 15M free AI credits land with it. Any OpenAI-compatible tool works too: just point it at https://marsai.click/v1.

Create free account API keys Read the docs