AI Visibility Index

Are the world's top websites ready for AI agents? Ranked by 8 agent-discovery surfaces. Updated 2026-08-26T11:01:11Z.

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143sites audited

97Grade A (agent-ready)

24Grade D–F (far behind)

12%use llms.txt (lowest)

72%support x402 / agents

robots.txt93%

sitemap.xml82%

llms.txt13%

llms-full.txt73%

agents.txt73%

x40272%

agents.json72%

security.txt85%

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The complete ranked dataset (CSV/JSON) plus a written State of AI Visibility report is available as a one-time purchase, and a live API for agents. Or subscribe to the weekly report.

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#	Domain	Grade	/8	llms.txt	x402	agents.txt

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