Lighthouse’s new Agentic Browsing audit forces SEO teams to prepare for AI agents
Google Lighthouse 13.3 adds an Agentic Browsing audit that grades how well a site works for AI agents, not just human users. The metric replaces a 0‑100 score with a pass‑ratio, focusing on machine‑readable tools, accessibility tree integrity, and layout stability. SEO teams must now ensure WebMCP, llms.txt and ARIA compliance to stay visible to AI‑driven search.