Lighthouse MCP Server
Google Lighthouse MCP server enabling AI agents to run web performance and quality audits using Lighthouse — analyzing pages for performance scores, Core Web Vitals, accessibility issues, SEO problems, and best practices. Enables AI agents to audit web pages and provide actionable improvement recommendations for web developers and performance engineers.
Score Breakdown
⚙ Agent Friendliness
🔒 Security
Local Chrome execution. No credentials. Public URL auditing. Configure Chrome sandboxing properly in server environments.
⚡ Reliability
Best When
A developer or DevOps agent needs to assess web page quality — Lighthouse provides comprehensive quality audits covering performance, accessibility, SEO, and best practices in a single tool.
Avoid When
You need real-time performance monitoring — use dedicated APM tools (Datadog, New Relic) for continuous monitoring. Lighthouse is for on-demand audits.
Use Cases
- • Auditing web page performance scores from web optimization agents
- • Checking Core Web Vitals (LCP, FID, CLS) from developer agents
- • Identifying accessibility issues using WCAG guidelines from compliance agents
- • SEO auditing and issue identification from SEO optimization agents
- • Automated performance regression testing from CI/CD agents
- • Competitive analysis of web performance from research agents
Not For
- • Server-side performance profiling (Lighthouse audits the client-side rendering experience)
- • Real-time monitoring (Lighthouse provides point-in-time snapshots, not continuous monitoring)
- • Teams not working on web development
Interface
Authentication
No authentication required — runs Lighthouse locally on public URLs. Lighthouse CLI and Chrome/Chromium required. No external API needed for basic auditing.
Pricing
Free tool. Lighthouse is a Google open-source tool. MCP server is free open source. Requires Chrome/Chromium installed locally.
Agent Metadata
Known Gotchas
- ⚠ Requires Chrome/Chromium installed — may not work in minimal container environments
- ⚠ Audit time can be 10-60 seconds depending on page — agents need long timeouts
- ⚠ Scores vary between runs due to network conditions and Chrome state — average multiple runs
- ⚠ Pages behind authentication require additional Lighthouse configuration
- ⚠ Lighthouse CLI must be installed — `npm install -g lighthouse`
- ⚠ Audit results are JSON-heavy — parse and summarize key metrics for agent context
Alternatives
Full Evaluation Report
Detailed scoring breakdown, competitive positioning, security analysis, and improvement recommendations for Lighthouse MCP Server.
Scores are editorial opinions as of 2026-03-06.