llms.txt checker

Enter a domain. We fetch its /llms.txt the way an agent does, and report each check with what to fix. Nothing is stored unless you submit the site.

Also as an API: GET /v1/check/example.com, or the check_llms_txt MCP tool. No llms.txt yet? Generate a draft.

What is checked

• HTTP 200 at /llms.txt on this domain (not a redirect to another site)
• Plain text, not an HTML page served for unknown paths
• H1 title, blockquote summary, H2 sections, Markdown links
• Links that resolve
• llms-full.txt, charset, size
• The Agent Web Map verification line

Rules explained: llms.txt best practices.