browse/README.md

<p align="center">
  <img src="logo.png" alt="browse" width="120" />
</p>

<h1 align="center">@saiden/browse</h1>

<p align="center">
  <a href="https://www.npmjs.com/package/@saiden/browse"><img src="https://img.shields.io/npm/v/@saiden/browse.svg" alt="npm version"></a>
  <a href="https://github.com/saiden-dev/browse/actions/workflows/ci.yml"><img src="https://github.com/saiden-dev/browse/actions/workflows/ci.yml/badge.svg" alt="CI"></a>
  <a href="https://opensource.org/licenses/MIT"><img src="https://img.shields.io/badge/License-MIT-yellow.svg" alt="License: MIT"></a>
  <a href="https://nodejs.org"><img src="https://img.shields.io/node/v/@saiden/browse.svg" alt="Node.js"></a>
</p>

<p align="center">
  Headless browser automation via MCP using Playwright WebKit.
</p>

## Installation

```bash
npm install @saiden/browse
npx playwright install webkit
```

## CLI Usage

```bash
# Take a screenshot
browse https://example.com

# Custom viewport and output
browse -o page.png -w 1920 -h 1080 https://example.com

# Query elements
browse -q "a[href]" https://example.com
browse -q "img" -j https://example.com  # JSON output

# Click and interact
browse -c "button.submit" https://example.com
browse -t "input[name=q]=hello" -c "button[type=submit]" https://google.com

# Chain actions
browse -c ".cookie-accept" -c "a.nav-link" -q "h1" https://example.com

# Interactive mode (visible browser)
browse -i --headed https://example.com

# Fullscreen mode (macOS native fullscreen)
browse --fullscreen -i https://example.com

# Preview mode (highlights elements before actions)
browse -p -c "button.submit" https://example.com
browse -p --preview-delay 3000 -c ".nav-link" https://example.com
```

## MCP Server

Add to your MCP client config (e.g., `~/.claude/settings.json` or project `.mcp.json`):

```json
{
  "mcpServers": {
    "browse": {
      "command": "npx",
      "args": ["browse-mcp"]
    }
  }
}
```

Or run directly:

```bash
browse-mcp
```

### MCP Tools Reference

**Browser Lifecycle:**
| Tool | Description |
|------|-------------|
| `launch` | Launch browser with options (headed, fullscreen, preview, viewport) |
| `close` | Close the browser and end session |

**Navigation & Interaction:**
| Tool | Description |
|------|-------------|
| `goto` | Navigate to a URL |
| `click` | Click on an element |
| `type` | Type text into an input field |
| `hover` | Hover over an element |
| `select` | Select option(s) in a dropdown |
| `keys` | Send keyboard shortcuts (e.g., "Enter", "Control+a") |
| `scroll` | Scroll page or element into view |
| `upload` | Upload files to a file input |
| `back`, `forward`, `reload` | Browser navigation |
| `wait` | Wait for a specified time |

**Debugging & Inspection:**
| Tool | Description |
|------|-------------|
| `console` | Get captured console messages (log, warn, error, etc.) |
| `errors` | Get page errors (uncaught exceptions) |
| `network` | Get captured network requests/responses |
| `intercept` | Block or mock network requests |
| `metrics` | Get performance metrics and DOM statistics |
| `a11y` | Get accessibility tree snapshot |

**Page Content:**
| Tool | Description |
|------|-------------|
| `query` | Query elements by CSS selector |
| `screenshot` | Take a screenshot |
| `url` | Get current URL and title |
| `html` | Get page HTML content |
| `eval` | Execute JavaScript in browser context |

**Storage & Session:**
| Tool | Description |
|------|-------------|
| `cookies` | Get, set, delete, or clear cookies |
| `storage` | Access localStorage or sessionStorage |
| `dialog` | Configure how browser dialogs are handled |
| `session_save` | Save session state to file |
| `session_restore` | Restore session from file |

**Viewport & Emulation:**
| Tool | Description |
|------|-------------|
| `viewport` | Resize browser viewport |
| `emulate` | Emulate a mobile device |

**Image Processing:**
| Tool | Description |
|------|-------------|
| `favicon` | Generate favicon set from image |
| `convert` | Convert image format |
| `resize` | Resize image |
| `crop` | Crop image |
| `compress` | Compress image |
| `thumbnail` | Create thumbnail |

### MCP Resources

| Resource | Description |
|----------|-------------|
| `browser://state` | Browser state (URL, title, launched) |
| `browser://html` | Page HTML (truncated to 10KB) |
| `browser://html/full` | Complete page HTML |
| `browser://console` | Captured console messages |
| `browser://network` | All network requests |
| `browser://network/failed` | Failed requests only |
| `browser://errors` | Page errors |
| `browser://a11y` | Accessibility tree |
| `browser://screenshot` | Page screenshot as base64 PNG |

## Programmatic Usage

```typescript
import { ClaudeBrowser } from '@saiden/browse';

const browser = new ClaudeBrowser({
  headless: true,      // Set false to show browser window
  width: 1280,
  height: 800,
  fullscreen: false,   // macOS native fullscreen (implies headless: false)
  preview: false,      // Highlight elements before actions
  previewDelay: 2000,  // Preview highlight duration in ms
});

await browser.launch();
await browser.goto('https://example.com');

const elements = await browser.query('a[href]');
console.log(elements);

await browser.click('button.submit');
await browser.type('#input', 'hello');
await browser.screenshot('page.png');

await browser.close();
```

## API

### ClaudeBrowser

**Lifecycle:**
- `launch()` - Launch the browser
- `close()` - Close the browser
- `newPage()` - Open new page

**Navigation:**
- `goto(url)` - Navigate to URL
- `back()` / `forward()` / `reload()` - Browser navigation
- `wait(ms)` - Wait for timeout

**Interaction:**
- `click(selector)` - Click element
- `type(selector, text)` - Type into input
- `hover(selector)` - Hover over element
- `select(selector, value)` - Select dropdown option(s)
- `keys(keys)` - Press keyboard keys
- `scroll(selector?, x?, y?)` - Scroll page or element
- `upload(selector, files)` - Upload files

**Content:**
- `query(selector)` - Query elements, returns attributes
- `screenshot(path?, fullPage?)` - Take screenshot
- `getUrl()` - Get current URL and title
- `getHtml(full?)` - Get page HTML
- `eval(script)` - Execute JavaScript

**Debugging:**
- `getConsole(level?, clear?)` - Get console messages
- `getErrors(clear?)` - Get page errors
- `getNetwork(filter?, clear?)` - Get network requests
- `getMetrics(includeResources?)` - Get performance metrics
- `getA11y(selector?)` - Get accessibility tree

**Storage:**
- `getCookies(name?)` - Get cookies
- `setCookie(name, value, url?)` - Set cookie
- `deleteCookie(name)` / `clearCookies()` - Remove cookies
- `getStorage(type, key?)` - Get localStorage/sessionStorage
- `setStorage(type, key, value)` - Set storage item
- `deleteStorage(type, key)` / `clearStorage(type)` - Remove storage

**Interception:**
- `addIntercept(pattern, action, response?)` - Block or mock requests
- `clearIntercepts()` - Remove all intercepts

**Viewport:**
- `setViewport(width, height)` - Resize viewport
- `emulate(device)` - Emulate device (e.g., 'iPhone 13')

**Commands:**
- `executeCommand(cmd)` - Execute a command object

## License

MIT