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Lighthouse MCP logo

Lighthouse MCP

mizchi/lighthouse-mcp

A comprehensive web application performance analysis toolset integrating Google Lighthouse with Model Context Protocol (MCP), providing structured analysis capabilities accessible to AI assistants and automation tools.

Install

npm install -g lighthouse-mcp

Environment variables

LIGHTHOUSE_USER_DATA_DIR
Author
@mizchi
Category
Monitoring, Developer Tools
License
MIT
Updated
Oct 6, 2026

About Lighthouse MCP

This project provides Google Lighthouse's powerful analysis capabilities through MCP (Model Context Protocol), enabling AI assistants to automatically detect, diagnose, and suggest improvements for website performance issues.

Features

  • Three-Layer Architecture: Clear separation of concerns with Collection (L1) → Analysis (L2) → Intelligence (L3)

  • Comprehensive Performance Analysis: Detailed analysis of all metrics including Core Web Vitals

  • Advanced Problem Detection: Automatic identification and prioritization of performance issues

  • Performance Budget Management: Target tracking and violation detection

  • Pattern Recognition: Identification of common issues across multiple sites

  • MCP Integration: Standardized interface for AI assistants and automation tools

  • Complete Test Coverage: Quality assurance through unit, integration, and E2E tests

Tools (6)

  • l2_deep_analysis

    LCP delays, CLS issues, TBT increase, unused resources

  • l2_critical_chain

    Render-blocking resources, request chains

  • l2_unused_code

    Unused CSS/JS, dead code

  • l2_third_party_impact

    Third-party impact, ad/analytics load

  • l2_lcp_chain_analysis

    LCP bottlenecks, image optimization opportunities

  • l3_action_plan_generator

    Prioritized actions, implementation guide

Details on this page are taken from the project's README. Open README

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