llms.txt checklist for AI SEO

llms.txt is a plain-text file that helps LLMs quickly understand which pages matter on your site.

It is not a replacement for a sitemap. A sitemap lists URLs for crawlers. llms.txt curates the pages most useful to language models.

Where it goes

Put the file at the root:

https://example.com/llms.txt

Use plain text or markdown-style formatting. Keep it easy to read.

What to include

Include:

• site name
• one-line description
• homepage
• product or service page
• pricing
• docs
• API reference
• FAQ
• best comparison pages
• best educational pages
• support or contact page

Do not include every URL. The file is useful because it is selective.

Simple template

# Example Company
> Short factual description of the company, product, and audience.

## Core pages
- [Home](https://example.com/)
- [Pricing](https://example.com/pricing)
- [Contact](https://example.com/contact)

## Product
- [Product overview](https://example.com/product)
- [Documentation](https://example.com/docs)
- [API reference](https://example.com/docs/api)

## Best answers
- [How Example works](https://example.com/blog/how-example-works)
- [Example vs alternatives](https://example.com/compare)
- [FAQ](https://example.com/faq)

Writing rules

Keep descriptions factual. Avoid slogans. An LLM should be able to read the file and know what your site is, who it is for, and which URLs matter.

Good:

NoticeMeAI audits websites for AI search visibility, including robots.txt crawler access, structured data, llms.txt, markdown availability, and agent-readiness signals.

Weak:

NoticeMeAI helps ambitious teams win the future of discovery.

Common mistakes

• file is missing
• file is blocked by robots.txt
• links redirect to another domain
• links return 404
• descriptions are vague
• every blog post is listed
• important docs are missing
• staging URLs are included

How to check it

Run:

curl -L https://example.com/llms.txt

Then verify every linked page returns 200 and contains readable content.

NoticeMeAI checks whether your site publishes llms.txt and whether it fits into the rest of your AI SEO foundation.