llms.txt is a plain-text file at your website root (yoursite.com/llms.txt) that gives AI language models a clean, structured summary of your most important pages. Think of it as a sitemap written for LLMs: instead of crawling hundreds of templated pages, an AI engine reads one curated file that says who you are, what you offer, and where your best answers live.
Why it matters
AI engines work under tight crawl and context budgets. A good llms.txt makes sure the pages that represent you best are the ones the model actually reads — and reduces the chance of it summarising your business from a stale category page or an old blog post. It is one of the cheapest GEO wins available: one file, permanent benefit.
The format
The file uses simple Markdown: an H1 with your site name, a one-line quoted summary, then sections listing links with short descriptions. A minimal template:
# Your Business Name
> One-sentence description of what you do and where.
## Pages
- [Services](https://example.com/services): What you offer and pricing
- [About](https://example.com/about): Who you are, credentials
- [Contact](https://example.com/contact): How to reach you
## Posts
- [Your best guide](https://example.com/guide): What it answersHow to create one in WordPress
The easiest route: Yoast SEO (v27+) generates llms.txt automatically — enable it under Yoast settings, and it refreshes as your content changes. Ours is live at adexorb.com/llms.txt, generated exactly this way. Alternatively, create the file manually and upload it to your site root via your hosting file manager. Manual files give you full control over what is included; generated files stay current automatically.
Three mistakes to avoid
Do not list every URL — curate your best 10–30 pages. Do not include admin, popup or internal URLs (a common flaw in auto-generated files; check yours and prune). And do not let the descriptions go stale: an llms.txt that contradicts your live pages hurts more than none, because it feeds AI outdated facts about your business.
FAQ
Is llms.txt an official standard?
It is a community proposal (llmstxt.org) that major AI companies increasingly crawl, not a ratified standard like robots.txt. Adoption is growing because it costs nothing and helps LLMs represent sites accurately.
Does llms.txt replace robots.txt or sitemap.xml?
No — it complements them. robots.txt controls crawler access, sitemap.xml lists URLs for indexing, and llms.txt curates and describes your key content for language models.
Will llms.txt guarantee AI citations?
No single file guarantees citations. It improves how accurately AI engines understand your site; combine it with crawler access, answer-first content and schema for actual citation wins.
Want us to set up llms.txt, robots.txt and full AI-crawler access for your site? Get in touch — it is part of every Adexorb GEO/AEO engagement.
