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openharness

Open-source desktop command center for coding agents across your machines, with tmux sessions and end-to-end encrypted links.

Agent by autonomous-ai

IndexedMIT★ 1,360
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Chalk Labs

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Setup steps are in the repository. Website · Repository

About

The project, called Harness in its README, is a native desktop app and CLI that shows coding agents such as Claude Code, Codex and Cursor side by side across several machines. A daemon on each machine runs agents in tmux, and machines connect directly or through a relay that forwards only ciphertext, sealed with ChaCha20-Poly1305 and X25519 session keys. It also gives each agent its own git worktree and can run local open-weight models through Ollama, MLX-LM and vLLM.

Use cases: coding, other, agent-orchestration, version-control

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Fact sheet

Jobs
coding, otherREADME
Where you use it
Desktop app, TerminalREADME
Hosting
You run itREADME
Models
ollama, vllm, mlx-lmREADME
Open source
YesREADME

Facts extracted by Claude Haiku 5.5 from the linked sources on Oct 24, 2026. Wrong fact? Tell us.

Signals

Stars
1,360
Forks
125
Open issues
25
Contributors
43
Last commit
Oct 24, 2026 (7 days ago)
Last release
Oct 24, 2026 (7 days ago)

From GitHub (fetched Oct 24, 2026).

Details

License
MIT
First seen
Oct 24, 2026
Last checked
Oct 24, 2026

Done for you

Rather not set it up yourself?

Chalk Labs scopes, builds and runs agents for your team: the task audit, the eval harness, the integrations and the weekly ops report. Fixed scope, priced before we start.

See how we build AI agents →Read the case studies

Chalk Labs is a two-founder AI and growth studio. We build AI agents, CRMs and MVPs for Web3 and AI companies, and have shipped 50+ product and token launches.

launches shipped
50+
launches shipped
media placements
500+
media placements
founders on every account
2
founders on every account

Press we've placed: Forbes · CoinDesk · Decrypt · Cointelegraph · The Block

Rahil Jain, Co-founder, Chalk Labs. Ex-Goldman Sachs engineer. You talk to the person who builds it.

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Cite this page

openharness. Agent Mart. https://agentmart.dev/agents/openharness (last updated 2026-10-24)