How to add an llms.txt file

llms.txt is an emerging standard (llmstxt.org) that gives large language models a concise, curated summary of your site — the way robots.txt guides crawlers and sitemap.xml lists your pages. When ChatGPT, Claude, or Perplexity look at your domain, an llms.txt tells them what you do and where the important content is, in plain Markdown they parse easily.

1. Create the file

It's a plain-text Markdown file: an # H1 with your site name, a > blockquote one-paragraph summary, then sections of links. Here's a template you can adapt:

# Your Company

> One or two sentences on what your company does and who it's for. Be concrete:
> the product, the audience, the core value. This is the summary an LLM will read first.

## Docs
- [Getting started](https://example.com/docs/start): set up in 5 minutes
- [API reference](https://example.com/docs/api): full endpoint list

## Product
- [Pricing](https://example.com/pricing): plans and limits
- [Changelog](https://example.com/changelog): what's new

## About
- [Company](https://example.com/about): team and mission
- [Contact](https://example.com/contact): how to reach us

Optionally also publish /llms-full.txt with the full text of your key pages inlined, for models that want the complete content in one fetch.

2. Place it at your site root

It must be reachable at https://yourdomain.com/llms.txt — the root, exactly like robots.txt. On most stacks, drop llms.txt into the folder your server treats as the web root (e.g. public/, static/, or the site root). Make sure it returns plain text, not your app's HTML 404 page.

3. Verify it

Open https://yourdomain.com/llms.txt in a browser — you should see the raw Markdown, not your homepage. Then re-grade your site to confirm the +25 landed.