mcp-undetected-chromedriver Skill

Stealth browser automation using undetected ChromeDriver. Bypasses common bot detection while providing full browser control for scraping, testing, and automation.

Context Efficiency

Traditional MCP approach:

• All 16 tools loaded at startup
• Estimated context: 8000 tokens

This skill approach:

• Metadata only: ~100 tokens
• Full instructions (when used): ~5k tokens
• Tool execution: 0 tokens (runs externally)

How This Works

Instead of loading all MCP tool definitions upfront, this skill:

1. Tells you what tools are available (just names and brief descriptions)
2. You decide which tool to call based on the user's request
3. Generate a JSON command to invoke the tool
4. The executor handles the actual MCP communication

Available Tools

• browser_navigate: Navigate to a URL

  Args: url: The URL to navigate to - required timeout: The timeout for the navigation - optional, default is 30000

• browser_screenshot: Take a screenshot of the current page or a specific element

  Args: name: The name of the screenshot - required, default is "screenshot" storeBase64: Whether to store the screenshot as a base64 string - optional, default is True downloadsDir: The directory to save the screenshot to - optional, default is the user's Downloads directory

• browser_click: Click an element on the page

  Args: selector: The selector of the element to click - required

• browser_iframe_click: Click an element inside an iframe on the page

  Args: iframeSelector: The selector of the iframe - required selector: The selector of the element to click - required

• browser_fill: fill out an input field

  Args: selector: CSS selector for input field - required value: The value to fill - required

• browser_select: Select an element on the page with Select tag

  Args: selector: CSS selector for element to select - required value: The value to select - required

• browser_hover: Hover over an element on the page

  Args: selector: CSS selector for element to hover over - required

• browser_evalute: Evaluate a JavaScript expression in the browser console

  Args: script: The JavaScript expression to evaluate - required

• browser_close: Close the browser and release all resources

• browser_get_visible_text: Get the visible text of the current page

• browser_get_visible_html: Get the HTML of the current page

• browser_go_back: Navigate back in browser history

• browser_go_forward: Navigate forward in browser history

• browser_drag: Drag an element to another element

  Args: sourceSelector: The selector for the element to drag - required targetSelector: The selector for the target location - required

• browser_press_key: Press a key on the keyboard

  Args: key: The key to press - required, (e.g. 'Enter', 'ArrowDown', 'a') selector: Optional CSS selector to focus on before pressing the key - optional

• browser_save_as_pdf: Save the current page as a PDF

  Args: outputPath: The path to save the PDF to - required filename: The name of the PDF file - optional, default is "page.pdf" format: The format of the PDF - optional, default is "A4" (e.g. "A4", "LETTER", "LEGAL", "TABLOID") printBackground: Whether to print the background - optional, default is True margin: The margin of the PDF - optional, default is None (e.g. {"top": "1cm", "right": "1cm", "bottom": "1cm", "left": "1cm"})

Usage Pattern

When the user's request matches this skill's capabilities:

Step 1: Identify the right tool from the list above

Step 2: Generate a tool call in this JSON format:

{
  "tool": "tool_name",
  "arguments": {
    "param1": "value1",
    "param2": "value2"
  }
}

Step 3: Execute via bash:

python .claude/skills/mcp-skills/executor.py --skill mcp-undetected-chromedriver --call 'YOUR_JSON_HERE'

Getting Tool Details

If you need detailed information about a specific tool's parameters:

python .claude/skills/mcp-skills/executor.py --skill mcp-undetected-chromedriver --describe tool_name

This loads ONLY that tool's schema, not all tools.

Examples

Example 1: Simple tool call

User: "Navigate to a website with stealth browser"

Your workflow:

1. Identify tool: browser_navigate
2. Generate call JSON
3. Execute:

python .claude/skills/mcp-skills/executor.py --skill mcp-undetected-chromedriver --call '{"tool": "browser_navigate", "arguments": {"url": "https://example.com"}}'

Example 2: Get tool details first

python .claude/skills/mcp-skills/executor.py --skill mcp-undetected-chromedriver --describe browser_screenshot

Returns the full schema, then you can generate the appropriate call.

Error Handling

If the executor returns an error:

• Check the tool name is correct
• Verify required arguments are provided
• Ensure the MCP server is accessible

Performance Notes

Context usage comparison for this skill:

Savings: ~37% reduction in typical usage

This skill was auto-generated from an MCP server configuration. Generator: mcp_to_skill.py