What is llms-full.txt?
What the file is, where the name comes from, how it differs from llms.txt, and how ours is built.
llms-full.txt is a single plain-text file, published at the root of a website, that holds the full text of the site's key pages in one place. An AI tool can read the whole site in one fetch instead of visiting page after page. It is the long companion to llms.txt, which is a short, curated index with links.
How is llms-full.txt different from llms.txt?
| llms.txt | llms-full.txt | |
|---|---|---|
| What's inside | A short summary and curated links | The full text of the pages themselves |
| Size | Small — one screen or a few | Large — the whole site's prose |
| Job | Point an AI tool to the right pages | Hand it the content in one go |
| Where it's defined | The llms.txt proposal, published by Jeremy Howard on 3 September 2024 | A convention, not part of that proposal |
The llmstxt.org proposal defines llms.txt. It does not define a file called llms-full.txt. Other tools use the name. Mintlify, a documentation platform, says it automatically hosts an llms-full.txt that "combines your entire documentation site into a single file," with each page's title, source URL, description and full Markdown content.
Markdown is a simple way of writing formatted text with plain characters, like # for a heading.
Do AI engines read llms-full.txt?
Be careful here. We have not found an AI search engine that documents reading llms-full.txt. Google says there are no special files or markup needed to appear in AI Overviews or AI Mode. Google Search Central
So treat it as a cheap extra, not a ranking switch. It helps AI coding tools, agents and anyone who pastes a site into a chat. It will not fix a site that blocks AI crawlers or buries its answers.
How is AI Syndicate's llms-full.txt built?
Ours is at /llms-full.txt. Nobody writes it by hand. A script runs at the end of every site build and assembles it from the finished pages:
- It starts with our curated llms.txt summary.
- It adds the full text of our most important pages first, in a set order.
- It then adds every other page listed in our sitemap, so a new page can't be left out.
- It skips the long run of generated local ranking pages, keeping only their hub and methodology.
- Each page is labelled with its source URL, and the file ends with the date it was built.
Because it is rebuilt from the live pages each time, it can't drift out of date the way a hand-kept file can.
Sources
- The /llms.txt file — llmstxt.org (Jeremy Howard). Read Sep 24, 2026.
- llms.txt — Mintlify documentation. Read Sep 24, 2026.
- AI features and your website — Google Search Central. Read Sep 24, 2026.
Common questions
Do I need llms-full.txt if I have llms.txt?
No. llms.txt is the part the proposal defines; llms-full.txt is optional. If your site is small and your pages are clean, llms.txt plus readable pages covers most of it.
Where does llms-full.txt go?
At the root of your domain, next to llms.txt — for example, yoursite.com/llms-full.txt.
Should I write llms-full.txt by hand?
We wouldn't. Generate it from your real pages on every build, so it always matches what the site says.
Related pages.
See what AI says about your business.
Enter your domain and the free AI visibility check shows where ChatGPT, Gemini, Perplexity and Google's AI answers mention you — and where they don't.