Agentic Browsing in Lighthouse: four checks, pass ratio 0/3, and what to fix before llms.txt

▤ Summary

This article explains how Lighthouse 13.3 evaluates sites for agentic browsing and why the new checks matter for AI-driven discovery. It highlights four areas that affect pass/fail results: accessibility, Core Web Vitals, llms.txt, and WebMCP. The piece gives practical guidance on what to fix first, especially CLS issues, ARIA labeling on cookie banners, and llms.txt placement. It also notes that WebMCP remains under development and that Search Console now includes generative AI-related signals. The overall message is to prioritize technical cleanup so websites become easier for AI agents and search systems to understand.

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