harnss

[!WARNING] Harnss is in early development and issues are to be expected. Please feel free to report bugs and issues in the Issues section.

<p align="center"> <img width="3168" height="1344" alt="unwatermarked_Gemini_Generated_Image_yb5gjqyb5gjqyb5g (1) (1)" src="https://github.com/user-attachments/assets/f3985b4c-7f8e-4d04-86a6-66529db2af8e" /> </p> <p align="center"> <strong>Harness your AI coding agents.</strong> </p> <p align="center"> <a href="https://github.com/OpenSource03/harnss/releases"><img alt="Latest Release" src="https://img.shields.io/github/v/release/OpenSource03/harnss?style=flat-square&color=blue" /></a> <a href="https://github.com/OpenSource03/harnss/stargazers"><img alt="Stars" src="https://img.shields.io/github/stars/OpenSource03/harnss?style=flat-square" /></a> <img alt="Platform" src="https://img.shields.io/badge/platform-macOS%20%7C%20Windows%20%7C%20Linux-brightgreen?style=flat-square" /> <img alt="Electron" src="https://img.shields.io/badge/electron-40-47848F?style=flat-square&logo=electron&logoColor=white" /> <img alt="License" src="https://img.shields.io/github/license/OpenSource03/harnss?style=flat-square" /> <a href="https://github.com/OpenSource03/harnss/actions"><img alt="Build" src="https://img.shields.io/github/actions/workflow/status/OpenSource03/harnss/build.yml?style=flat-square&label=build" /></a> </p>

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Harnss is a cross-platform desktop app that gives you one interface to run, manage, and switch between AI coding agents — Claude Code, Codex, and any ACP-compatible agent — without losing context, sessions, or tool state.

Why Harnss?

• One app, every agent. Run Claude Code, Codex, and custom ACP agents side by side. No more juggling terminals or losing context when switching tools.
• See what your AI is actually doing. Tool calls render as interactive cards with word-level diffs, syntax highlighting, and inline bash output — not raw JSON.

<p align="center"> <img width="2069" height="1333" alt="CleanShot 2026-03-08 at 05 39 16" src="https://github.com/user-attachments/assets/87f06ec9-e09d-4889-9aa0-6904eb68f30a" /> <br /> <em>Terminal, browser, git, and MCP integrations — all in one window.</em> </p> <p align="center"> <img width="2069" height="1333" alt="CleanShot 2026-03-08 at 05 40 20" src="https://github.com/user-attachments/assets/7dc6b42f-398b-405e-9413-7192b2aaecb6" /> <br /> <em>One UI - all agents. Browse entire ACP registry.</em> </p> <details> <summary>Click to reveal other screenshots</summary> <p align="center"> <br /> <em>Organize your projects in spaces.</em> </p> <p align="center"> <img width="825" height="721" alt="CleanShot 2026-03-02 at 02 43 43" src="https://github.com/user-a...