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- Support both local and remote server deployment - Add direct public IP access option for remote servers - Remove tunnel requirement messaging - Organize remote access options with details sections
7.8 KiB
7.8 KiB
How it Works
HAPI consists of three interconnected components that work together to provide remote AI agent control.
Architecture Overview
┌────────────────────────────────────────────────────────────────────────────┐
│ Your Machine (Local or Server) │
│ │
│ ┌──────────────┐ ┌──────────────┐ ┌──────────────┐ │
│ │ │ │ │ │ │ │
│ │ HAPI CLI │◄───────►│ HAPI Server │◄───────►│ Web App │ │
│ │ │ Socket │ │ SSE │ (embedded) │ │
│ │ + AI Agent │ .IO │ + SQLite │ │ │ │
│ │ │ │ + REST API │ │ │ │
│ └──────────────┘ └──────┬───────┘ └──────────────┘ │
│ │ │
│ │ localhost:3006 │
└───────────────────────────────────┼────────────────────────────────────────┘
│
┌─────────▼─────────┐
│ Tunnel (Optional)│
│ Cloudflare/ngrok │
└─────────┬─────────┘
│
┌───────────────────────────────────┼────────────────────────────────────────┐
│ Public Internet │
│ │ │
│ ┌─────────────────────────┼─────────────────────────┐ │
│ │ ▼ │ │
│ │ ┌──────────────┐ ┌──────────────┐ │ │
│ │ │ │ │ │ │ │
│ │ │ Telegram │ │ PWA / │ │ │
│ │ │ Mini App │ │ Browser │ │ │
│ │ │ │ │ │ │ │
│ │ └──────────────┘ └──────────────┘ │ │
│ │ │ │
│ └───────────────────────────────────────────────────┘ │
│ Your Phone │
└────────────────────────────────────────────────────────────────────────────┘
Note: The server can run on your local desktop or a remote server (VPS, cloud, etc.). If deployed on a server with a public IP, tunneling is not required.
Components
HAPI CLI
The CLI is a wrapper around AI coding agents (Claude Code, Codex, Gemini). It:
- Starts and manages coding sessions
- Registers sessions with the HAPI server
- Relays messages and permission requests
- Provides MCP (Model Context Protocol) tools
Key Commands:
hapi # Start Claude Code session
hapi codex # Start OpenAI Codex session
hapi gemini # Start Google Gemini session
hapi daemon start # Run background service for remote session spawning
HAPI Server
The server is the central hub that connects everything:
- HTTP API - RESTful endpoints for sessions, messages, permissions
- Socket.IO - Real-time bidirectional communication with CLI
- SSE (Server-Sent Events) - Live updates pushed to web clients
- SQLite Database - Persistent storage for sessions and messages
- Telegram Bot - Notifications and Mini App integration
Web App
A React-based PWA that provides the mobile interface:
- Session List - View all active and past sessions
- Chat Interface - Send messages and view agent responses
- Permission Management - Approve or deny tool access
- File Browser - Browse project files and view git diffs
- Remote Spawn - Start new sessions on any connected machine
Data Flow
Starting a Session
1. User runs `hapi` in terminal
│
▼
2. CLI starts Claude Code (or other agent)
│
▼
3. CLI connects to server via Socket.IO
│
▼
4. Server creates session in database
│
▼
5. Web clients receive SSE update
│
▼
6. Session appears in mobile app
Permission Request Flow
1. AI agent requests tool permission (e.g., file edit)
│
▼
2. CLI sends permission request to server
│
▼
3. Server stores request and notifies via SSE + Telegram
│
▼
4. User receives notification on phone
│
▼
5. User approves/denies in web app or Telegram
│
▼
6. Server relays decision to CLI via Socket.IO
│
▼
7. CLI informs AI agent, execution continues
Message Flow
User (Phone) Server CLI
│ │ │
│──── Send message ──────►│ │
│ │─── Socket.IO emit ───►│
│ │ │
│ │ ├── AI processes
│ │ │
│ │◄── Stream response ───│
│◄─────── SSE ────────────│ │
│ │ │
Communication Protocols
CLI ↔ Server: Socket.IO
Real-time bidirectional communication for:
- Session registration and heartbeat
- Message relay (user input → agent)
- Permission requests and responses
- Metadata and state updates
- RPC method invocation
Server ↔ Web: REST + SSE
- REST API for actions (send message, approve permission)
- SSE stream for real-time updates (new messages, status changes)
External Access: Tunnel
For remote access outside your local network:
- Cloudflare Tunnel (recommended) - Free, secure, reliable
- Tailscale - Mesh VPN for private networks
- ngrok - Quick setup for testing