Web Performance Intelligence
For AI Coding Assistants

Give Claude, Cursor, and Devin Desktop direct diagnostic access to Lighthouse audits, Chrome UX Report (CrUX) field data, and actionable code remediation patches.

Get Started Watch Live Demo

v2 Workflow Tools

Audit Categories

50+

Metrics & CWV Tracked

Apache-2.0

Open Source License

Interactive Simulation

See It In Action

Watch how PageSpeed MCP analyzes websites and generates actionable fixes directly inside your AI assistant.

Claude + PageSpeed MCP

pagespeed-insights-mcp (stdio connected)

pagespeed-insights-mcp — stdio transport

v2 Tool Suite

6 Focused Workflow Tools

Streamlined v2 architecture designed for high-signal AI agent tool calls.

pagespeed_analyze_page

One-page Lighthouse health check, recommendations, audit findings, or performance map with Mermaid charts.

Analyze

pagespeed_diagnose_page

Inspect one specific bottleneck lens: visual, elements, network, JavaScript, images, render-blocking, or third parties.

Diagnose

pagespeed_get_field_data

Real-user Core Web Vitals from Chrome UX Report (CrUX) 28-day p75 for single URL or bare origin fallback.

CrUX Field Data

pagespeed_compare_pages

Compare two pages side-by-side (staging vs prod) or measure one page against its saved baseline.

Regression Baseline

pagespeed_analyze_batch

Triage 1–10 public URLs in parallel with concurrency rate limiting and progress notifications.

Batch Triage

pagespeed_clear_cache

Purge in-memory PageSpeed response cache immediately after deploying performance optimizations.

Lifecycle Utility

Live Telemetry & Gauges

Actionable Telemetry Reports

Lighthouse lab audits and real-world Core Web Vitals delivered in structured formats.

Performance

Accessibility

Best Practices

SEO

0.8s

First Contentful Paint

1.2s

Largest Contentful Paint

0.000

Cumulative Layout Shift

35ms

Interaction to Next Paint

15ms

Total Blocking Time

60ms

Server Response (TTFB)

Quickstart Guide

Up and Running in 60 Seconds

Three simple steps to unlock AI-powered web performance engineering.

Get API Key

Enable PageSpeed Insights API in Google Cloud Console.

export GOOGLE_API_KEY=your-key

Configure Client

Add the MCP server to Claude Desktop, Cursor, or Devin Desktop config.

{
  "mcpServers": {
    "pagespeed-insights": {
      "command": "npx",
      "args": ["-y", "pagespeed-insights-mcp"]
    }
  }
}

Start Analyzing

Prompt your AI assistant naturally to analyze and optimize your web app.

"Analyze https://mysite.com mobile LCP and generate code fixes"

Apply Fixes

Receive ranked opportunities with estimated KB savings and patches.

Score: 96/100 (Pass)
LCP: 1.2s (Fast)
Diff: +<Image priority />

Architecture Comparison

Beyond Manual Testing

Stop tab-switching. Integrate live performance audits directly into your AI coding workflow.

Feature	Manual PageSpeed	pagespeed-insights-mcp v2
Natural Language Agent Invocation		Claude, Cursor, Devin Desktop Ready
Focused Diagnostic Lenses (7 Domains)		JS, CSS, Render-Blocking, Images
CrUX Field Data + Origin Fallback	Basic	28-day p75 URL & Origin
Regression Tracking & Stored Baselines		1–5 Runs with Median & Spread
Batch Multi-URL Triage (1–10)		Parallel with Rate Limiting
Smart Code Remediation Diffs		Actionable AI Engineering Plans
In-Memory Cache Layer & Invalidation		TTL Cache + Explicit Purge
Docker & CLI Stdio Transport	N/A	Ready out-of-the-box

Web Performance Intelligence For AI Coding Assistants