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OpenBitFun is an open-source desktop workspace for AI agents. It brings together a fast, reliable Rust Agent Runtime, a powerful, flexible Agent Harness, and a polished desktop experience to make working with agents straightforward.
Use AI to write code, fix bugs, research a topic, draft reports, create presentations, and build tools for your daily work. You can also create a specialist agent for motion comic production, visual design, or your own field, with a workflow tailored to your needs.
⭐ Star OpenBitFun to follow its progress and help others discover the project.
Download · Mini App Marketplace · Contribute
The Agent Harness shapes how a task gets done. It plans steps, manages context, calls tools, coordinates agents, and brings their results together. Choose the mode that fits the task:
| Mode | When to use it |
|---|---|
| Minimal | Quick collaboration. Start with a clear goal. The agent acts directly, you give feedback, and you refine the work together. |
| Standard | Everyday tasks. For work with several steps: plan the approach, work through it, and check the results. |
| Ultimate | Complex tasks. Dig into demanding problems, divide the work among agents, and bring their results together. |
| Creative | Creation and customization. Build Mini Apps or extend OpenBitFun's interface and capabilities to make the workspace your own. |
Switch devices. Keep the task moving. Start at your desktop, pick up the conversation on your phone, or use a browser to check progress, add instructions, and respond to approval requests. Work continues on the device running the task, wherever you connect from.
On mobile, switch between layouts for one, two, or three screens. Focus on the conversation with a single screen, then unfold your phone to view conversations and files side by side. The interface adapts as the screen layout changes.
We're also building ways to connect from watches and glasses. The device extension protocol lets us bring task updates and simple interactions to more wearables, extending collaboration from your desk to your wrist and beyond.
Connection and deployment details
Use SSH to work on a remote host, through a jump host, or inside a container, with files, commands, and agent execution in the target environment. The desktop app and CLI share core execution capabilities; mobile clients and messaging bots offer more ways to control tasks.
Account login, synchronization, and control between devices on the same account run through a Relay server you deploy. See Remote Connect and remote workspaces for connection options.
Build a Git insights panel for a repository, a workspace for presentations, or a form that brings routine actions together. Mini Apps turn specific needs into tools you can use.
Describe what you need and let the agent build it. Each Mini App pairs a dedicated interface with an agent conversation, so you can use the app for everyday work and keep improving it through chat.
Install and reuse the apps you build, or explore the Mini App Marketplace for tools that fit your work.
Customize the roles, tools, interface, and source code. Start with an agent that fits your work, then extend the workspace around it:
- Build a specialist agent. Choose a model, define its role, and equip it with the tools and workflows it needs for motion comic production, visual design, code review, or your own field.
- Connect tools and workflows. Connect tools through MCP, turn repeatable processes into Skills, and use Hooks to customize how tasks run.
- Change the interface and source. Install skins for a new look, or modify the UI, tools, and runtime source to build your own version of OpenBitFun.
You can ask OpenBitFun's Code Agent to modify and extend OpenBitFun itself.
Learn more about agent management, Hooks and compatibility, and the product architecture.
The Rust Agent Runtime manages session state, context, and tool execution. Persistent sessions, interruption recovery, long-term memory, and support for extended tasks help keep work moving. Context compression and cache reuse help control resource consumption over longer runs.
In this DeepSWE v1.1 evaluation, OpenBitFun achieved:
- GLM-5.3-Flash: 64.6% pass rate, 42.9 minutes median runtime (P50).
- DeepSeek-V4-Flash: 56.6% pass rate, 19.6 minutes median runtime (P50).
These are just some of OpenBitFun's features. Explore more tools, workflows, and extensions as you put it to work on your own tasks.
OpenBitFun is still evolving. Here are three directions we want to explore:
- Lights-Out Factory: Plan and design during the day, let tasks continue on a server, and come back the next morning to review the results.
- Infinite Radius: Extend from desktops and phones to wearables and embedded devices, so work can continue in more places.
- App Evolution: Enable more people to shape software, from personal tools to versions tailored to a profession or industry.
Getting there means making long-running tasks more reliable, the runtime more efficient, and the desktop experience smoother.
Star OpenBitFun to follow along. Share what you build, offer feedback, or contribute code to help shape what comes next.
Share your use cases and experience, contribute agents, Skills, Mini Apps, or skins, or help improve the docs, interface, and runtime. Ideas and questions are welcome in this repository's Issues and Discussions. See the contribution guide for the development workflow.
Download, setup, and running from source
Get the Windows, macOS, or Linux package from the official download page. Install it, configure a model, and open a workspace to get started. See the user guide for usage instructions and download verification for package signature checks.
To run from source, install Node.js 22.12+, pnpm 10.15.0, the Rust toolchain, and the Tauri prerequisites. Clone the repository, then run:
pnpm install
pnpm run desktop:devDesktop development supports frontend hot reload and automatic Rust rebuilds. See the CLI guide for the command-line workflow.
Core code is licensed under the MIT License. Third-party dependencies and assets retain their own licenses. Thanks to the open-source authors and contributors who make this work possible. To report a vulnerability, see the security policy.