Chrome Debug MCP Playwright

@robertheadley

Repository

Basic information

About Chrome Debug MCP Playwright

An MCP server to allow you to debug webpages using LLMs

#debugger #debugging #chrome #dom #mcp #cline #llm #mcp-server #roo-code #roocode

Chrome Debug MCP Playwright config

No standard config provided

This server doesn't expose a parseable MCP config block in its README. See the repository for install instructions.

Repository

Chrome Debug MCP Playwright tools

Tool list not available yet

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Overview

What is Chrome Debug MCP Playwright?

Chrome Debug MCP Playwright is a Model Context Protocol (MCP) server that enables browser automation using Playwright, with full Greasemonkey API support. It is designed for developers who need programmatic control over Chromium-based browsers and want to inject userscripts with storage, notification, clipboard, and cross-origin request capabilities.

How to use Chrome Debug MCP Playwright?

Install via npm install chrome-debug-mcp-playwright. Then launch a browser with tool browser launch_browser --url "https://example.com" and use additional tools for page interaction, tab management, Greasemonkey operations, and request interception. A full command reference is available in COMMANDS.md.

Key features of Chrome Debug MCP Playwright

Browser launch and management for Chromium-based browsers
Multi-tab support with create, switch, and close capabilities
Full Greasemonkey API: GM_addStyle, GM_getValue, GM_setValue, GM_deleteValue, GM_notification, GM_setClipboard, GM_xmlhttpRequest
Network request interception with blocking, modification, and logging
Resource type filtering for granular control
Screenshot capture of browser pages
Detailed logging system with timestamped entries in organized log files

Use cases of Chrome Debug MCP Playwright

Automate web interactions across multiple tabs, such as form filling and navigation
Inject and test userscripts with Greasemonkey storage and notification APIs
Debug web applications by intercepting and logging network requests
Capture screenshots of pages for visual regression testing
Block or modify resource loading (e.g., images, CSS) during automated sessions

Frequently asked questions

What Greasemonkey API functions are supported?

Chrome Debug MCP Playwright supports `GM_addStyle`, `GM_getValue`, `GM_setValue`, `GM_deleteValue`, `GM_notification`, `GM_setClipboard`, and `GM_xmlhttpRequest`.

What are the system requirements?

You need Node.js 16 or higher, npm 7 or higher, and the Playwright browser automation library (installed automatically as a dependency).

How do I launch a browser and navigate to a URL?

Use the `launch_browser` tool with the `--url` flag, e.g., `tool browser launch_browser --url "https://example.com" --browserType "chromium"`.

Does this server support multiple browser tabs?

Yes, it includes tools to create, switch, and close tabs, allowing you to manage multiple concurrent pages.

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