Happy CLI (@yongkangc/happy-coder)

Code on the go controlling Claude Code from your mobile device.

Free. Open source. Code anywhere.

This fork includes:

• Claude Code 2.0.55 (latest)
• Claude Opus 4.5 support
• OpenAI Codex support with GPT-5.1-Codex-Max (xhigh/high/medium reasoning)

Installation

npm install -g @yongkangc/happy-coder

Usage

happy

This will:

1. Start a Claude Code session
2. Display a QR code to connect from your mobile device
3. Allow real-time session sharing between Claude Code and your mobile app

Commands

• happy auth – Manage authentication
• happy codex – Start Codex mode
• happy connect – Store AI vendor API keys in Happy cloud
• happy notify – Send a push notification to your devices
• happy daemon – Manage background service
• happy doctor – System diagnostics & troubleshooting

Options

• -h, --help - Show help
• -v, --version - Show version
• -m, --model <model> - Claude model to use (default: sonnet)
• -p, --permission-mode <mode> - Permission mode: auto, default, or plan
• --claude-env KEY=VALUE - Set environment variable for Claude Code (e.g., for claude-code-router)
• --claude-arg ARG - Pass additional argument to Claude CLI

Environment Variables

• HAPPY_SERVER_URL - Custom server URL (default: https://api.cluster-fluster.com)
• HAPPY_WEBAPP_URL - Custom web app URL (default: https://app.happy.engineering)
• HAPPY_HOME_DIR - Custom home directory for Happy data (default: ~/.happy)
• HAPPY_DISABLE_CAFFEINATE - Disable macOS sleep prevention (set to true, 1, or yes)
• HAPPY_EXPERIMENTAL - Enable experimental features (set to true, 1, or yes)

Requirements

• Node.js >= 20.0.0
• Claude CLI installed & logged in (claude command available in PATH)

Related Projects

• happy - Mobile & web client app
• happy-server - Backend server for encrypted sync

License

MIT