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aarness.

Open source

Open at the core. Hosted when you want it.

The agent, the terminal app, the desktop app, the server and the SDKs are open source under Apache 2.0 and run free on your computer. Haarness Cloud is the optional hosted service built on the same code.

Source opens soonDownload for LinuxRead the docs

How it fits together

One harness.Yours to run, or ours to host.

Cloud workspaces run the same open-source runtime you can install today. What Cloud adds is everything a laptop cannot do on its own.

Open sourceApache 2.0

Everything you need to run Haarness yourself, free, with your own models.

Source opens soonDownload
Haarness CloudHosted

The same harness, run for you, with what a laptop cannot do on its own.

  • Cloud workspaces that keep working while you are away
  • Prompts that run on a schedule
  • Every model on one account, paid in credits
  • Your own computer, reachable from any browser
  • A private marketplace for your team
Start in the cloudSee plans

Why open

An agent you can trust is one you can read

  • Run it anywhere

    On your computer, on your own servers or in our cloud. The same runtime behaves the same everywhere.

  • Read the code that acts for you

    An agent edits files and runs commands. You can see exactly how it decides, when it asks and what it records.

  • No lock-in

    Bring your own models and keys, and keep your conversations on your machine. Cloud is a choice, not a requirement.

Community

Build it with us

The repositories open soon. Until then, write to us at [email protected].

  • Follow the project

    Star the repository and watch releases.

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  • Report a bug

    Or ask for a feature. Search existing issues first.

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  • Contribute

    Sign off your commits and open a pull request.

    Opens soon

  • Report a security problem

    Privately, never in a public issue.

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The code is licensed under Apache 2.0, and the router under MIT. The Haarness name and logo are trademarks and are not covered by those licenses: you may say your software works with or is built on Haarness, but please ask before you ship a modified build under the Haarness name.