harnss — Gemini AI Agent
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    harnss

    harnss

    OpenSource03 February 19, 2026
    190 copies 0 downloads

    Open-source, desktop client/UI build to harness Claude Code, Codex and any other Agent accepting Agent Client Protocol. Run multiple AI coding agents side by side with rich tool visualization, MCP integrations, built-in terminal, git, browser and just about anything else you may need.

    [!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>

    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.
    • Your workspace, your way. Built-in terminal,

    Tags

    agent-client-protocolagentclientprotocolaichatgptclaudeclaude-codecodexcopilotgemini

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