Chrome Debug MCP Playwright
@robertheadley
About Chrome Debug MCP Playwright
An MCP server to allow you to debug webpages using LLMs
Basic information
Config
No standard config provided
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RepositoryTools
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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
FAQ from Chrome Debug MCP Playwright
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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