Add an llms.txt file (optional)

Publish a short plain-text guide to your site for AI tools. Optional, and only worth doing once the basics are right.

Time: 20 minutes
Difficulty: Easy
Updated: 28 October 2026

llms.txt is a proposal for a plain-text file that gives AI tools a quick guide to your site. No major AI company has confirmed that it reads these files yet, so treat it as a small extra, not a fix. Promptopus never counts its absence against you.

What to put in it

A short Markdown file at yourdomain/llms.txt:

# Your Business

> Hand-poured soy candles from Yorkshire, sold online and in our Leeds shop.

## Key pages

- [Shop all candles](https://yourbusiness.co.uk/collections/all): every scent and size
- [Delivery and returns](https://yourbusiness.co.uk/policies/shipping): UK delivery from £3.95
- [About us](https://yourbusiness.co.uk/pages/about): who we are

Keep it up to date when your key pages change.

For your developer

Serve a Markdown file at /llms.txt (text/plain or text/markdown) following the llms.txt proposal: an H1 name, a blockquote summary, then sections of links to key pages with one-line descriptions.

General guidance only. Take a backup before making changes, and test on a staging copy where you can. Nobody can guarantee what AI tools recommend.