What does this llms.txt validator check?

It checks for a Markdown H1, summary blockquote, important notes, Core pages, Optional section, useful Markdown links, concise scope, parseable URLs, and obvious private data patterns.

Does a valid llms.txt file guarantee AI search traffic?

No. llms.txt is an emerging convention and not a guaranteed ranking or citation signal. It is useful as a public context map when a system or person chooses to read it.

Free llms.txt validator

Check an llms.txt file before you publish it.

Paste a draft and get a practical report for structure, public links, safety notes, concise scope, and obvious private-data mistakes. It is built for useful public context, not ranking tricks.

Validate llms.txt Browse examples

Structure Checks H1, summary, Core pages, Optional, and notes.

Safety Flags obvious private paths, tokens, and localhost links.

Activation Copy a validation report for launch notes.

llms.txt validator

Runs in browser

Paste llms.txt

Validation report

Publish-readiness summary

This checker is intentionally conservative. A file can be syntactically fine and still be a bad idea if it includes private URLs, credentials, unsupported claims, or too many low-value links.

Status

Waiting

Run the validator to review your file.

Check	Status	Detail
Run the validator to see results.

Recommendations

Keep it short

Use llms.txt as a public map of canonical pages, not as a full sitemap or keyword dump.

Protect private material

Do not include admin paths, customer pages, unpublished pricing, API keys, tokens, or internal docs.

What to do after validation

Generate a cleaner file

If your draft is messy, start from the generator and paste the result back here.

Open the llms.txt generator

Review examples

Compare your structure against SaaS, ecommerce, local business, docs, and publisher examples.

Browse llms.txt examples

Check crawler access

Make sure robots.txt does not accidentally block the crawlers you want for search visibility.

Run the AI crawler checker