Puppeteer Swarm MCP

MCP server for browser automation with tab pool support using Puppeteer.

Features

• Explicit Browser Control: Launch and close browser on demand via launch/close tools
• Tab Pool: Manage multiple browser tabs concurrently
• Auto-release: Automatically release tabs after idle timeout (default: 5 minutes)
• Auto-recovery: Automatically recover crashed tabs
• Configurable: Set tab count and headless mode via CLI arguments

Installation

Option 1: Install from npm

npm install -g puppeteer-swarm-mcp

Or run directly using npx:

npx puppeteer-swarm-mcp

Option 2: Install from source

git clone https://github.com/greatSumini/puppeteer-swarm-mcp.git
cd puppeteer-swarm-mcp
npm install
npm run build

Usage

# Default: 5 tabs, headless=false
puppeteer-swarm-mcp

# Custom tab count
puppeteer-swarm-mcp --tabs=10

# Headless mode
puppeteer-swarm-mcp --headless

# Combined options
puppeteer-swarm-mcp --tabs=10 --headless

Environment Variables

TAB_COUNT=10 HEADLESS=true puppeteer-swarm-mcp

MCP Client Integration

Puppeteer Swarm MCP can be integrated with various AI coding assistants and IDEs that support the Model Context Protocol (MCP).

Requirements

• Node.js >= v18.0.0
• An MCP-compatible client (Claude Code, Cursor, VS Code, Windsurf, etc.)

claude mcp add puppeteer-swarm -- npx -y puppeteer-swarm-mcp --tabs=5 --headless

claude mcp add puppeteer-swarm -- npx -y puppeteer-swarm-mcp --tabs=10

{
  "mcpServers": {
    "puppeteer-swarm": {
      "command": "npx",
      "args": ["-y", "puppeteer-swarm-mcp", "--tabs=5", "--headless"]
    }
  }
}

{
  "mcpServers": {
    "puppeteer-swarm": {
      "command": "npx",
      "args": ["-y", "puppeteer-swarm-mcp", "--tabs=5", "--headless"]
    }
  }
}

"mcp": {
  "servers": {
    "puppeteer-swarm": {
      "type": "stdio",
      "command": "npx",
      "args": ["-y", "puppeteer-swarm-mcp", "--tabs=5", "--headless"]
    }
  }
}

{
  "mcpServers": {
    "puppeteer-swarm": {
      "command": "npx",
      "args": ["-y", "puppeteer-swarm-mcp", "--tabs=5", "--headless"]
    }
  }
}

{
  "mcpServers": {
    "puppeteer-swarm": {
      "command": "npx",
      "args": ["-y", "puppeteer-swarm-mcp", "--tabs=5", "--headless"]
    }
  }
}

{
  "context_servers": {
    "puppeteer-swarm": {
      "source": "custom",
      "command": "npx",
      "args": ["-y", "puppeteer-swarm-mcp", "--tabs=5", "--headless"]
    }
  }
}

Available Tools

launch

Initialize the browser and tab pool. Must be called before using any other browser tools.

Parameters: None

Returns:

{
  "message": "브라우저가 성공적으로 시작되었습니다.",
  "config": {
    "tabCount": 5,
    "headless": false,
    "idleTimeout": 300000
  }
}

close

Close the browser and all tabs.

Parameters: None

Returns:

{
  "message": "브라우저가 종료되었습니다."
}

get_pool_status

Get the current status of the tab pool. Can be called before launch to check initialization status.

Parameters: None

Returns (after launch):

{
  "initialized": true,
  "total": 5,
  "idle": 3,
  "busy": 2
}

Returns (before launch):

{
  "initialized": false,
  "message": "브라우저가 초기화되지 않았습니다. 먼저 'launch' 도구를 호출하세요."
}

navigate

Allocate an idle tab and navigate to a URL.

Parameters:

Returns:

{
  "tabId": "tab-1",
  "url": "https://example.com",
  "title": "Example Domain"
}

get_content

Extract HTML or text content from a page.

Parameters:

Returns:

{
  "content": "..."
}

screenshot

Capture a page screenshot.

Parameters:

Returns: Image content (base64 PNG)

click

Click an element by CSS selector.

Parameters:

Returns:

{
  "success": true
}

type

Type text into an input field.

Parameters:

Returns:

{
  "success": true
}

evaluate

Execute JavaScript in the page context.

Parameters:

Returns:

{
  "result": "..."
}

wait_for_selector

Wait for an element to appear in the DOM.

Parameters:

Returns:

{
  "success": true
}

release_tab

Release a tab back to idle state.

Parameters:

Returns:

{
  "success": true
}

Workflow Example

1. launch()
   -> Initialize browser and tab pool

2. navigate({ url: "https://example.com" })
   -> Returns { tabId: "tab-1", ... }

3. get_content({ tabId: "tab-1", type: "text" })
   -> Returns page content

4. click({ tabId: "tab-1", selector: "button.submit" })
   -> Click a button

5. release_tab({ tabId: "tab-1" })
   -> Release the tab for reuse

6. close()
   -> Close browser when done (optional)

Note: The browser does not start automatically. You must call launch before using any browser tools.

Logging

Logs are stored in the logs/ directory:

• File Pattern: mcp-puppeteer-YYYY-MM-DD.log
• Daily rotation, max 20MB per file
• 14 days retention with auto-compression

License

MIT License - see the LICENSE file for details.

Author

Choi Sumin - GitHub