Chrome DevTools MCP is Google's official server that gives the agent the DevTools panels: console, network, performance traces, Lighthouse and device emulation.
Playwright clicks through the app. Chrome DevTools MCP tells you why it's slow or broken. It records traces and pulls out performance insights, shows console messages with source-mapped stack traces, and lists every network request the page made.
A real run
We traced our own design-skills article as a phone on slow 4G. The agent noticed its first trace used cached files and re-ran it in a clean browser. Then it found an LCP of 35.9 seconds and explained why: a 2880px image shown at 415px, downloading alongside 35 others.
Watch out
- It sends usage statistics to Google by default. Add
--no-usage-statisticsto opt out.
- Performance tools may send trace URLs to the Chrome UX Report API for real-user data. Add
--no-performance-cruxto turn that off.
- The browser's content is exposed to the agent. Use
--slimif you only need basic browsing, and avoid pages with data you don't want to share.
Install
Terminal
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claude mcp add chrome-devtools npx chrome-devtools-mcp@latest
Cursor, VS Code, Codex and Antigravity take the same
npx chrome-devtools-mcp@latest command. It officially supports Google Chrome and Chrome for Testing.More in Top MCP servers for development.
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