WebPerf Snippets for Claude Code

io.github.nucliweb/webperf-snippets

Measure Core Web Vitals and debug web performance with 56 snippets in a headless Chromium

client:Claude Code transport:stdio runtime:npm

Install WebPerf Snippets in Claude Code

run in your project directory

claude mcp add webperf-snippets -e CRUX_API_KEY=<CRUX_API_KEY> -- npx -y webperf-snippets

Adds it for this project only. Append --scope user to make it available everywhere. Claude Code docs