Free tool

llms.txt validator for AI discovery files.

Paste an llms.txt draft and get a browser-only check for structure, URL hygiene, private content risks, and Pagewell-style factuality. No signup, no server upload.

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No signup
Runs in browser
No upload

llms.txt draft

Runs locally in your browser. No signup and no upload.

Result Click “Validate llms.txt” to score the draft.

How to use

Check the file before crawlers or AI systems see it.

Pagewell discovery updates should keep llms.txt factual, compact, public, and useful. This tool turns that QA checklist into a quick first pass.

Paste a draft

Use your current llms.txt or write a short site summary with important public pages and tools.

Validate locally

The tool checks heading structure, sections, absolute URLs, hype terms, length, and private/noindex risks.

Apply fixes

Keep the file factual and compact. Do not include temporary campaigns, private ABM pages, or unsupported claims.

Example output

A useful result should be specific, not just pass/fail.

The validator returns a score, passes, warnings, and suggested fixes before any product CTA appears.

validator result

Score: 86/100
[pass] Starts with a top-level site heading.
[pass] Includes absolute URLs.
[warn] Add a Public tools section if tools matter to the site.
[warn] Remove hype terms such as best or #1 unless sourced.

Keep AI discovery files factual

Want the agent to update discovery files in your repo?

Pagewell can help generate or update robots.txt, sitemap behavior, and llms.txt as part of a repo-native page workflow.

$ bunx skills add ReScienceLab/pagewell --skill pagewell

Install Pagewell and ask it to update discovery files after generating indexable pages.

FAQ

Common questions, answered directly.

What does this llms.txt validator check?

It checks for practical issues Pagewell cares about: a clear site heading, useful sections, absolute URLs, excessive length, hype language, and private/noindex content references.

Does the tool send my llms.txt content anywhere?

No. This browser-only tool runs locally with a small client-side script. It does not submit the text to a server.

Can Pagewell generate free tools like this?

Yes. Pagewell's free-tool playbook requires a working input/output utility, first value without signup, a crawlable SEO shell, FAQ content, and WebApplication schema when indexable.