Happy - Mobile and Web Client for Claude Code & Codex

2026-05-14 · source · source ↗ · raw capture · wiki page

Cross-platform client enabling users to access Claude Code and Codex from mobile devices and web browsers with end-to-end encryption and seamless device switching.

Key Features

Mobile access: Control Claude Code and Codex from iOS and Android apps
Web interface at app.happy.engineering
Device switching: Instantly transfer control between phone and desktop with a single keypress
End-to-end encryption: Code remains encrypted across all devices
Push notifications: Real-time alerts for permissions and errors
Open source: Fully auditable codebase with no telemetry

Core Components

Happy App - Web UI and mobile client (built with Expo)
Happy CLI - Command-line wrapper for Claude Code and Codex
Happy Agent - Remote session management and monitoring
Happy Server - Backend infrastructure for encrypted synchronization

How It Works

Users run happy instead of claude directly. The wrapper enables remote sessions accessible via mobile apps, allowing monitoring and control of AI coding agents away from desktop computers.

20.6k stars, MIT license, TypeScript (95.3%).