HAPI

HAPI means "哈皮," a Chinese transliteration of Happy. Great credit to the original project.

Run Claude Code / Codex / Gemini sessions locally and control them remotely through a Web / PWA / Telegram Mini App.

Why HAPI? HAPI is a local-first alternative to Happy. See Why Not Happy? for the key differences.

Features

• Seamless Handoff - Work locally with native Claude Code or Codex, switch to remote when needed, switch back anytime.
• Start AI coding sessions from any machine.
• Monitor and control sessions from your phone or browser.
• Approve or deny tool permissions remotely.
• Browse files and view git diffs.
• Track session progress with todo lists.
• Supports multiple AI backends: Claude Code, Codex, and Gemini.

Getting Started

npm install -g @twsxtd/hapi
hapi server

Open http://localhost:3006 and log in with the token.

More options: Quick Start | Installation

Docs

• Quick Start
• Installation
• PWA
• How it Works
• Why HAPI
• FAQ

Requirements

• Claude CLI installed and logged in (claude on PATH) for Claude Code sessions.
• Bun if building from source.

Build from source

bun install
bun run build:single-exe