os-factory/har
HAR: open agent harness (CLI + MCP) for coding agents. Isolated worktrees, deterministic verify, software factory workflows for Claude Code, Cursor, and Codex.
- Stars
- 127
- Forks
- 15
- Open issues
- 5
- Last push
- 15d ago
About har
har is a free, open-source AI agent tool by os-factory, written mainly in TypeScript. HAR: open agent harness (CLI + MCP) for coding agents. Isolated worktrees, deterministic verify, software factory workflows for Claude Code, Cursor, and Codex. It has 127 GitHub stars and 15 forks, and was last updated 15d ago. It's released under the Apache-2.0 license, a standard open-source license.
- License
- Apache-2.0
- Language
- TypeScript
- Stars
- 127
- Last update
- 15d ago
- Runs on Mac
- Not stated
- GPU
- Not stated
- Paid API key
- Not stated
- Self-hostable
- Yes
Similar free tools
ECC286k stars · The agent harness performance optimization system. Skills, instincts, memory, security, and research-first development for Claude Code, Codex, Opencode, Cursor and beyond.
hermes-agent256k stars · The agent that grows with you
ponytail172k stars · Makes your AI agent think like the laziest senior dev in the room. The best code is the code you never wrote.
claude-code-best-practice68k stars · from vibe coding to agentic engineering - practice makes claude perfect
rea361k stars · Reverse engineer anything with agents, from app behavior down to native binaries.
paperclip106k stars · The open-source app everyone uses to manage agents at work
Discussions
har FAQ
Is har free?
Yes. har is open source and free to use. It's released under the Apache-2.0 license, a standard open-source license.
Does har run on a Mac?
The project doesn't say. Check its installation guide before you start.
Does har need a GPU?
The project doesn't state hardware needs. AI models generally run much faster with a GPU.
Is har still maintained?
Yes. It was last updated 15d ago and has 5 open issues on GitHub.
What are alternatives to har?
Similar free, open-source tools include ECC, hermes-agent, ponytail, claude-code-best-practice.