MCP server exposing 2 tools for pagespeed-insights.
This URL is a JSON-RPC 2.0 endpoint over HTTP. Issue POST requests with a JSON-RPC body. Browsers and search crawlers land here on GET.
POST https://gateway.pipeworx.io/pagespeed-insights/mcp
Content-Type: application/json
{"jsonrpc":"2.0","id":1,"method":"tools/list"}pagespeed_audit — Run Google's PageSpeed Insights (Lighthouse) against any public URL and get back the performance, accessibility, best-practices and SEO scores, the lab timing metrics behind them, and the RANKED list of specific fixes with the milliseconds or bytes each one would save — render-blocking resources, unused JavaScript and CSS, unoptimised images, missing text compression. AUTHORITATIVE for "why is this page slow and what do I fix first": this is Google's own analyser running the page on Google's infrastructure, which is what no amount of reading a site's HTML can substitute for. Works on any public site, including a competitor's. A call takes 10-40 seconds because the page is genuinely loaded.pagespeed_field_metrics — Real-user Core Web Vitals for a page AND for its whole origin in one call, from Google's Chrome UX Report as PageSpeed Insights serves it — 75th-percentile Largest Contentful Paint, Interaction to Next Paint, Cumulative Layout Shift and Time to First Byte, with the good/needs-improvement/poor split behind each and Google's own pass/fail verdict. AUTHORITATIVE for whether a page passes Core Web Vitals, and it says plainly when a low-traffic page has no data of its own and Google substituted the origin's — a substitution that otherwise reads as page data and misattributes the whole site's performance to one URL.Code samples (curl / TypeScript / one-click client install), schemas, and the live playground are on the pack page:
https://pipeworx.io/packs/pagespeed-insights/
Pipeworx is an open MCP gateway connecting AI agents to live data. pipeworx.io