Happy — Claude Code Mobile Client
Website: happy.engineering
GitHub: slopus/happy — 21.7K ★, MIT, TypeScript
Install: npm install -g happy
Claude Code Anywhere — spawn and control multiple Claude Codes in parallel. Runs on your hardware, works from your phone and desktop, and costs nothing. Open source.
Overview
Happy is a free, open-source mobile and web client for Claude Code (and Codex, Gemini CLI). It lets you control AI coding agents from your phone with real-time sync, voice input, and full feature parity.
Key Features
- Real-time sync — connect your phone to your dev machine
- Voice coding — speak commands to Claude Code
- Parallel tasks — run multiple Claude Code instances simultaneously
- End-to-end encryption — your code never leaves your devices unencrypted
- Push notifications — get alerted when tasks complete
- Open source (MIT) — audit the code yourself
- Self-hostable — run your own Happy server
Supported Clients
- Claude Code (primary)
- OpenAI Codex CLI
- Google Gemini CLI
Why Happy
“I’ve tried CodeRemote, YoloCode, Omnara, Claudia, Conductor, Cursor Agents… Nothing beats this. Simple, open source, and free.”