llms.txt explained: does it actually help AI find you?

llms.txt is a plain-text file that hands AI crawlers a clean summary of your site. The honest take: it ensures accurate facts and is cheap to add, but it is a finishing touch, not a growth lever, and not every engine reads it yet. What to put in it, and what it will not do.

llms.txt is a plain-text file you place at the root of your domain that hands AI crawlers a clean, structured summary of your site and its key facts. The idea is to give assistants an accurate, easy-to-quote description of you instead of making them parse your marketing pages. Does it help you show up in AI answers? A little, and it is cheap to add, but it is a finishing touch, not a foundation. Here is the honest picture.

What llms.txt actually is

It is a Markdown file at yourdomain.com/llms.txt. A simple version looks like this:

Your Company

One-sentence description of what you do.

Key pages

Pricing: what it costs
Product: what it does

Key facts

Founded 2026, based in ...
Serves small businesses and agencies

That is the whole idea: a curated, machine-readable brief in your own words. It is a proposed convention, not an official web standard, championed by people who want AI assistants to have a clean source instead of scraping a JavaScript-heavy page.

Does it actually help?

Here is the honest answer, because the topic attracts hype. Adoption is early and uneven: not every AI engine reads llms.txt yet, and the public evidence that it directly lifts citations is thin. It will not, on its own, put you in AI answers. If a guide promises that a single llms.txt file wins you AI visibility, be skeptical.

What it does do is real but modest:

It gives assistants accurate facts about you in your wording, which reduces the chance of a wrong or stale description.
It is a positive, low-cost signal that you have thought about being read by AI.
It is cheap to add and cannot hurt. For a few minutes of work, it is worth having.

Treat it the way you treat a clean meta description: helpful hygiene, not a growth lever.

What to put in it

Keep it short and factual:

A one-line description of what you do, the sentence you would want an AI to repeat.
Your key pages with a short note on each (product, pricing, main guides).
Key facts: what you sell, who you serve, where you are, founding year, anything you want quoted accurately.
Consistency with your site. The file must not contradict your pages, or you send the engine mixed signals. Generate it from one source of truth if you can.

We publish one for SearchVis at /ai-instructions, served in machine-readable form at /llms.txt, if you want a working example.

What it does not replace

llms.txt is the last 5%, not the first 95%. It will not compensate for the things that actually earn citations: being present in the third-party sources AI reads, structuring your pages so answers can be lifted, and real trust signals. Do those first. The full list is in how to get cited by AI: a practical checklist.

Frequently asked questions

What is llms.txt? A Markdown file at your domain root that gives AI crawlers a clean summary of your site and key facts, so assistants can describe and quote you accurately.

Does llms.txt improve AI visibility? Marginally. It ensures accurate facts and is a low-cost positive signal, but it does not by itself get you named in answers, and not all engines read it yet. Do the source and structure work first.

Is it an official standard? No. It is a proposed convention with growing but uneven adoption. It is worth adding because it is cheap and cannot hurt, not because it is required.

Where does the file go? At the root: yourdomain.com/llms.txt. Keep it consistent with your actual site content.

The bottom line

Add an llms.txt, it is a few minutes of accurate-facts hygiene and it cannot hurt, but do not expect it to move the needle by itself. The needle moves when you are in the sources AI reads and your pages are easy to lift. Start by seeing where you stand with a free visibility check.