llms.txt validator
Enter a domain and this page fetches its /llms.txt and checks the structure against the format: one H1 title, an optional blockquote summary, H2 sections with link lists. Free, no signup, nothing stored.
Only https://<domain>/llms.txt is fetched. Agents can call this with Accept: application/json.
What it does not do
This is a structure check against the llms.txt format, not an agent-readiness score. A full audit measures discovery, content, access control and more: see services, or start with llms.txt explained.