# llms.txt Checker

Validate whether your site exposes an llms.txt file and gives AI agents a clear guide to your most useful resources.

Canonical URL: https://truborankai.com/llms-txt-checker

## Quick Answer

An llms.txt checker verifies whether a site provides an AI-readable guide file and whether that file points agents toward important pages, docs, and Markdown resources.

## AI Summary

TruboRank AI checks llms.txt presence and related discovery signals so teams can provide AI systems with clearer instructions about website purpose and important content.

## What This Checker Analyzes

- llms.txt availability
- links to key pages or documentation
- relationship with llms-index.md
- Link header exposure
- machine-readable descriptions

## Why It Matters

llms.txt can help AI agents understand which resources matter. It is not a ranking guarantee, but it can improve machine guidance.

## Common Issues

- No llms.txt file
- File exists but has no useful links
- Outdated links
- No Markdown index
- No Link header pointing to the file

## How To Use This Checker

Start with a live scan of your website URL. Review the status of each signal, then fix the highest-impact blockers first. Technical blockers should usually be handled before content optimization because AI systems need access before they can evaluate page quality.

1. Run the free scan on your homepage or a high-value page.
2. Review crawl access, sitemap discovery, headers, and AI-readable resources.
3. Open each warning and confirm whether it affects important public content.
4. Fix server-level issues such as robots.txt, Link headers, and content types.
5. Improve page-level content with direct answers, summaries, FAQs, and internal links.
6. Re-run the scan after changes to verify the result.

## How Pro Helps

Pro provides llms.txt guidance, generator-style prompts, and implementation steps for connecting llms.txt with your content structure.

## FAQ

### What is llms.txt?

llms.txt is a proposed text file that gives AI systems a concise guide to important website resources.

### Is llms.txt required?

No. It is optional, but it can help provide clearer machine-readable guidance.

### Where should llms.txt be placed?

Usually at the site root, such as example.com/llms.txt.

## Related Internal Links

- [llms.txt Generator](/llms-txt-generator)
- [Link Headers Checker](/link-headers-checker)
- [What is llms.txt?](/blog/what-is-llms-txt)
- [How to Create llms.txt](/blog/how-to-create-llms-txt)