llms.txt for an online store: what it is for, a template to copy

Where it comes from

The format was proposed in 2024 by Jeremy Howard, on llmstxt.org. It is Markdown: a title, a one-line summary, then sections of annotated links.

No assistant commits to reading it: it is a convention, like robots.txt in its early days. It costs one file, and it gives an agent what it is looking for without crawling ten pages.

What we found

Our agent looks for /llms.txt in every test; it counts for 2 points out of 100 in the method. Of the 60 stores where this was measured, 36 publish one.

Shopify publishes one by default, introducing the store and its UCP checkout protocol to agents. Check that it says what you want.

What it should contain for a store

• The store name and one sentence on what it sells.
• The main categories, with a link each.
• Delivery: times, countries, costs or free-shipping threshold.
• Returns: period and conditions, with a link to the page.
• Ordering: payment methods, guest checkout or not.
• Customer service contact.

Template to copy

Replace the names, addresses and conditions with yours:

# My Store

> French online store selling natural cosmetics made in France. Delivery to France and Belgium.

## Catalogue
- [Face](https://www.my-store.fr/face): skincare and cleansers
- [Body](https://www.my-store.fr/body): creams and oils

## Delivery and returns
- [Delivery](https://www.my-store.fr/delivery): 2 to 4 working days, free from €49
- [Returns](https://www.my-store.fr/returns): 30 days, free return at a pick-up point

## Ordering
- Guest checkout available; card, PayPal and Apple Pay.
- [Contact](https://www.my-store.fr/contact): customer service Monday to Friday

Where to publish it

At /llms.txt on your domain, as plain UTF-8 text. On PrestaShop or WooCommerce, put the file at the site root. Then check with our free tool that it is read, along with the other files agents look at: robots.txt, sitemap, UCP profile.