What an llms.txt file is
An llms.txt file is a plain text file that sits at the root of your website, at yourdomain.com/llms.txt. It is written for AI systems the way a robots.txt file is written for search crawlers. Where robots.txt tells a crawler what it may fetch, llms.txt gives an AI model a short, readable summary of who you are, what you do, and which pages matter most.
The idea is simple. AI assistants like ChatGPT, Gemini, Claude and Perplexity do not read a website the way a person does. A typical page is full of menus, scripts, cookie banners and layout code. An llms.txt file strips that away and hands over a clean overview: a short description of the business and a list of links to your key pages, each with a line explaining what it covers.
We cover the format and its background in more depth in our llms.txt explainer. This page focuses on the practical question: should a small business bother?
How AI crawlers use it to understand your site
Buyers used to search Google and click through ten links. More and more of them now ask an AI assistant and get one answer with a few names in it. If your company is not one of those names, you are not part of that decision. An llms.txt file is one of the ways you help an assistant understand your business well enough to mention it correctly.
When an AI system or a crawler working for one finds your llms.txt file, it gets a compact map of the site. It can see your business description, your main service or product pages, and your key supporting content without having to guess from a messy homepage. That makes it easier to describe you accurately and to point to the right page when someone asks a related question.
One honest caveat: llms.txt is a young convention. Not every AI system looks for it, and having one does not guarantee you will be recommended. Think of it as one input among several, not a switch that turns on AI visibility.
Do you need one for a small business?
For most small businesses, the answer is: it is worth having, but it is not where you should start. The file is small and cheap to produce, and it does no harm. But it works best when the pages it points to are already strong.
If your site has thin service pages, no answers to the questions buyers actually ask, and missing page titles and meta descriptions, a tidy llms.txt will not fix that. An AI assistant that follows your links will still find little worth citing. Get the basics right first, such as clear page titles, useful pages and readable structured data, then add llms.txt on top.
It makes the most sense for you if:
- you sell a service or product that people increasingly ask AI assistants about
- you have a handful of important pages you want AI systems to find first
- you want a clear, controlled description of your business that you wrote, not one an AI pieced together
How to set one up
Setting up an llms.txt file by hand is not hard. The format is plain text with light markdown, and the steps are short.
- Write a one or two sentence description of your business: what you do, who you serve, and where you are based.
- Pick the pages that matter most. Your main service or product pages, your about page, and any page that answers a common customer question are good candidates.
- List each page as a link with a one-line description of what it covers. Describe the page plainly, as you would to a new employee.
- Save the file as llms.txt and upload it to the root of your site so it loads at yourdomain.com/llms.txt.
- Open the address in a browser to confirm it loads as plain text.
The part people forget is upkeep. When you add a page, rename one or change a service, the file goes out of date. A stale llms.txt that points to pages that no longer exist is worse than none at all, so plan to revisit it whenever your site changes.
How Scaup handles this automatically
Scaup is an AI visibility company based in New York. It connects to your website, checks what AI assistants say about your business, and makes the changes that help them understand and cite you. An llms.txt file is one of those changes, alongside pages that answer your buyers' questions, structured data AI can read, and the Google foundations underneath.
That work happens every day on your own site, so the file does not drift out of date as your pages change. Every change is visible, and you can switch on review so nothing goes live before you approve it. If you build or manage websites for clients, our guide on how to add SEO and AI search visibility to your services as a web designer or marketing agency explains how this kind of work can become part of what you offer. You can read how each platform connects in the Scaup documentation, and see how this fits into the bigger picture in our guide to generative engine optimization.
llms.txt FAQ
What is an llms.txt file?
It is a plain text file at the root of your website that gives AI systems a short summary of your business and a list of your most important pages. It is written for AI the way robots.txt is written for search crawlers.
Where does the llms.txt file go?
It goes at the root of your site so it loads at yourdomain.com/llms.txt. After uploading it, open that address in a browser to check it displays as plain text.
Will an llms.txt file get my business recommended by ChatGPT?
Not on its own. It helps AI systems understand your site, but it works best when the pages it links to are strong and useful. Treat it as one input among several.
Do small businesses need an llms.txt file?
It is worth having because it is small and does no harm, but fix the basics first. Clear page titles, useful pages and readable structured data matter more than the file itself.
What should I put in an llms.txt file?
Start with a one or two sentence description of your business, then list your key pages as links with a one-line description of each. Include your main service or product pages and your about page.
How often should I update my llms.txt file?
Update it whenever you add, rename or remove an important page, or change what you offer. A file that points to pages that no longer exist can do more harm than having none.