Quick Reference

Fast access to Happy Coder commands, shortcuts, and essential information.

Installation

npm install -g happy-coder

Essential Commands

Command	Description
happy	Start Happy Coder (connects to Claude Code)
happy --auth	Show QR code for device pairing
happy --version	Show version information
happy --help	Display help

Mobile App Downloads

Platform	Link
iOS	App Store
Android	Google Play
Web	app.happy.engineering

Architecture Quick View

┌─────────────┐     ┌─────────────┐     ┌─────────────┐
│   Mobile    │────▶│   Relay     │◀────│    CLI      │
│    App      │     │   Server    │     │  (happy)    │
└─────────────┘     └─────────────┘     └─────────────┘
       │                   │                   │
       │         QR Code Pairing              │
       └──────────────────────────────────────┘

Key Features

Feature	Status
Real-Time Sync	✅
Multi-Session	✅
Voice Coding	✅
E2E Encryption	✅
Push Notifications	✅
Self-Hostable	✅
Open Source (MIT)	✅

Environment Variables

Variable	Description
HAPPY_SERVER_URL	Custom relay server URL
HAPPY_SESSION_NAME	Custom session identifier

Quick Links

• CLI Commands Reference
• Troubleshooting Guide
• All SOPs
• All Workflows
• GitHub Repository