AI in Practice
AI & the Web
How sites are read by machines now - llms.txt, agents.txt, and the audits that have started measuring it.
Everything in AI & the Web
2 September 2026
Lighthouse Now Grades Your Site for AI Agents. Here Is What It Checks.
Lighthouse has a fifth category, Agentic Browsing, and one of its audits reads your llms.txt. Three sites failed it for the same undocumented reason, and the API will not give you the category unless you ask for it by a name that is not in the docs.