> ## Documentation Index
> Fetch the complete documentation index at: https://askui-docs-streamline-documentation.mintlify.site/llms.txt
> Use this file to discover all available pages before exploring further.

# Platform Agents

> Desktop, Android, and Web agents.

## VisionAgent (Desktop)

```python theme={null}
from askui import VisionAgent

with VisionAgent() as agent:
    agent.act("Open Chrome and navigate to github.com")
    agent.click("Sign in")
    agent.type("username")
```

## AndroidVisionAgent

Control Android via ADB:

```python theme={null}
from askui import AndroidVisionAgent

with AndroidVisionAgent() as agent:
    agent.act("Open Settings and enable Dark Mode")
    agent.tap("Submit button")
    agent.type("Hello World")
    agent.swipe(100, 500, 100, 100)
    agent.key_tap("HOME")
```

**Setup**: Enable USB debugging, connect via USB/WiFi ADB, verify with `adb devices`.

**Device selection**:

```python theme={null}
with AndroidVisionAgent(device=0) as agent:  # By index
with AndroidVisionAgent(device="SERIAL123") as agent:  # By serial
```

## WebVisionAgent

Playwright-based web automation:

```python theme={null}
from askui import WebVisionAgent

with WebVisionAgent() as agent:
    agent.act("Navigate to github.com, click Sign in, enter credentials")
```

## Data Extraction

All agents support `get()`:

```python theme={null}
url = agent.get("What is the current URL?")
is_logged_in = agent.get("Is user logged in?", response_schema=bool)

# Structured data
class UserInfo(ResponseSchemaBase):
    username: str
    email: str

user = agent.get("Extract user info", response_schema=UserInfo)
```

## Choosing an Agent

| Use Case          | Agent                |
| ----------------- | -------------------- |
| Desktop apps      | `VisionAgent`        |
| Web (via desktop) | `VisionAgent`        |
| Web (headless)    | `WebVisionAgent`     |
| Android           | `AndroidVisionAgent` |