Playwright Lighthouse is a tool designed to analyze website performance by leveraging Playwright and Lighthouse within a Model Context Protocol (MCP) server. This allows Large Language Models (LLMs) to conduct comprehensive web site performance analysis, identifying areas for improvement and providing insights into overall website health. It offers capabilities to run Lighthouse audits, capture screenshots, and integrate seamlessly with MCP-compatible clients like Claude for Desktop, facilitating a streamlined workflow for performance optimization.