phone-for-ai-agent

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phone-for-ai-agent

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Your AI agent can have an android phone.

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# Phone for AI Agent

> **Experimental** — Give your AI agent direct access to your Android phone, just like a human would use it.

> ⚠️ **WARNING:** This is an experimental project. It gives remote control of your phone over the network. Use it **only on trusted local WiFi networks**. The authors take **no responsibility** for any data loss, privacy breaches, unintended actions, or misuse. Sensitive information (passwords, messages, photos, banking details, etc.) may be exposed to the AI agent or the network. Use at your own risk. Disable the Accessibility Service and uninstall the app when not in use.

This is a native Android app + Node.js server that lets an AI agent (or any laptop-based script) control a phone through WebSocket commands — tapping, swiping, navigating, reading the UI, and more.

Instead of brittle automation frameworks or screen scraping, it uses Android's **AccessibilityService** to interact with apps the same way a human does: by reading the UI tree and dispatching real gestures.

## How it Works

```
┌──────────────┐    WebSocket     ┌───────────────┐
│  Phone App   │ ◄──────────────► │  Server/Laptop│
│  (Android)   │                  │  (Node.js)    │
└──────────────┘                  └───────────────┘
     │                                    │
     │ AccessibilityService               │ Command scripts
     │ (tap, swipe, back, home,           │ (port 8081)
     │  get UI tree, click by text)       │
     │                                    │
     └── Real human-like interaction ─────┘
```

## What It Can Do

- **Tap** anywhere by coordinates
- **Swipe** in any direction
- **Navigate** (back, home)
- **Read the screen** — get the full UI node tree (text, descriptions, bounds, clickable, etc.)
- **Find and click** by visible text or content description
- **Run in background** via foreground service
- **Two-port server** — 8080 for the phone, 8081 for command scripts, with response forwarding

## Why?

AI agents need to interact with real apps, not just APIs. This project gives them a phone. You can:

- Ask your AI to "open YouTube and play a song"
- Have it scroll through Instagram, tap posts, and read comments
- Automate any app with natural language commands
- Let your coding assistant test your mobile app by actually using it

## Setup

### 1. Build & Install

```bash
./gradlew assembleDebug
adb install app/build/outputs/apk/debug/app-debug.apk
```

### 2. Enable Accessibility

1. Open the app → tap **Open Accessibility Settings**
2. Find **PhoneController** in the list
3. Toggle it ON and confirm

### 3. Start the Server

```bash
cd server
npm install
npm start
```

### 4. Connect

1. Find your IP: `ifconfig | grep inet`
2. Enter in the app: `ws://<YOUR_IP>:8080`
3. Tap **Connect**

### 5. Send Commands

In the server terminal, type shorthand commands:

```
home
back
tap center
swipe up
ui tree
```

Or send raw JSON via the command relay (port 8081):

```bash
node send.js '{"id":"1","type":"tap","x":500,"y":1200}'
```

## Supported Commands

| Type | Params | Description |
|---|---|---|
| `tap` | `x`, `y` | Tap at screen coordinates |
| `swipe` | `x1`, `y1`, `x2`, `y2`, `duration` | Swipe gesture |
| `back` | — | Trigger back button |
| `home` | — | Go to home screen |
| `get_ui_tree` | — | Dump current screen's node hierarchy |
| `click_text` | `text` | Click the first node matching visible text |
| `click_description` | `description` | Click the first node matching content description |
| `type` | `text` | Type text into the focused input field |
| `wait` | `ms` | Pause for N milliseconds |
| `long_press` | `x`, `y`, `duration` | Press and hold at coordinates |
| `keyevent` | `key` | Send system key event (1=BACK, 2=HOME, 3=RECENTS, etc.) |
| `get_state` | — | Get current foreground app info |

## Project Structure

```
├── app/src/main/java/com/phonecontroller/
│   ├── MainActivity.kt              # UI, connection, and service control
│   ├── PhoneAccessibilityService.kt # Gesture dispatch, UI tree walking
│   ├── AccessibilityController.kt   # Singleton service reference
│   ├── WebSocketManager.kt          # OkHttp WebSocket client
│   ├── WebSocketService.kt          # Foreground service for persistence
│   ├── CommandParser.kt             # JSON command validation
│   └── models/                      # Data classes (CommandWrapper, Response, UiNode)
├── server/
│   ├── server.js                    # Dual-port WebSocket server
│   └── send.js                      # Command helper script
└── build.gradle.kts
```

## AI Agent Guide

Read `AI_SKILL.md` — a comprehensive skill file that teaches AI agents how to use this tool efficiently, with smart navigation tricks, command reference, and detailed patterns.

## Safety

- Commands only execute while Accessibility Service is enabled
- Only 12 defined command types are accepted — no arbitrary execution
- All gestures and actions are logged
- Foreground service ensures the connection stays alive

## License

MIT

phone-for-ai-agent

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