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Free tool · Fetches your public page

Is your llms.txt valid?

Enter a domain; helloAISearch fetches its /llms.txt from our server, checks it against the llms.txt spec, and scores it 0–100 with a fix for every failed rule. If the file is missing you get a clear miss and a link to the generator.

  • GPTChatGPTin the trial
  • CLClaudeon paid plans
  • GMGeminiin the trial
  • PXPerplexityon paid plans

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llms.txt check

A domain (example.com) or the full URL of the file. Anything else resolves to <site>/llms.txt.

How this tool works+

The domain or URL you enter. helloAISearch fetches that site's /llms.txt from our server; the file is checked and not stored. No AI provider is called. The public page is fetched from our server, scored, and not stored. Rate limits apply. Details in the Privacy Policy (Free Tools sections) and the Terms of Service (section 29).

One check is a snapshot. A schedule is a measurement.

helloAISearch runs your prompts on ChatGPT, Claude, Gemini and Perplexity on a schedule, highlights every mention, and turns each gap into one move per day.

Track it daily → Start free →See pricing

Questions

About this tool

What does the validator check?+

Nine rules from the spec's shape: exactly one H1 first, a blockquote summary right after it, at least one H2 section, link lines shaped “- [title](URL): description”, absolute http(s) URLs only, no HTML tags, no duplicate URLs, under 50 KB, and an Optional section only at the end. Each rule carries a weight; the score is the weight of the rules that pass.

Why does it say my llms.txt contains HTML when I published a text file?+

Usually the server answered a different path. Single-page frameworks serve the app's index.html for any unknown URL, so /llms.txt returns a page rather than your file. Serve it as a static file with Content-Type text/plain and check again.

Does a valid llms.txt get me cited?+

No. It tells the crawlers that read it what your site is. Whether an engine then names you for a prompt is a separate question with a different measurement: publish the file, then track the prompts and watch whether the answers change.

Can I validate a draft I have not published yet?+

Not here; this tool fetches a live URL. The generator runs the same nine rules on what it builds, so draft there, fix the findings, publish, and then check the live URL on this page.

Related tools

  • llms.txt Generatorspec-conformant llms.txt from your site name, summary and key pages; runs in the browser
  • AI Crawler Access Checkerrobots.txt tested against 18 AI crawlers, with which blocks cost you answers
  • GEO / AI Readiness Score0–100 AI readiness score for any public page with a fix per failed check
  • Sitemap Validatorfinds and validates sitemap.xml or a sitemap index, with every error and warning explained
  • All free tools →

Read next

  • The llms.txt guide
  • How to get cited in AI search
  • The engines we track

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