What is llms.txt (and why your site needs one)

llms.txt is a plain-text file at the root of your site (https://yoursite.com/llms.txt) that summarizes your product for large language models and AI agents. Think of it as a concise map: what you do, who it is for, and where to find machine-readable docs.

Why it matters

• Agents and crawlers use it to recommend your product accurately instead of guessing from marketing copy.
• AI Agent Pages and isitagentready.com check for llms.txt as part of agent readiness.
• It pairs well with MCP server cards, ARD manifests, and your normal sitemap.

Minimal example

# Your Product Name

> One-line description of what you offer.

## For agents

- Docs: https://yoursite.com/docs
- API: https://yoursite.com/.well-known/api-catalog
- Support: support@yoursite.com

## Key pages

- [Pricing](https://yoursite.com/pricing)
- [Submit / contact](https://yoursite.com/contact)

Serve it as text/plain; charset=utf-8 with a 200 response (no auth wall).

Checklist

1. Publish /llms.txt on your production domain.
2. Link it from robots.txt or site footer (optional but helpful).
3. Submit to AI Agent Pages — choose the site type that matches how you sell (content, product, commerce).
4. Rescan after changes if you are already listed.

Next steps

• MCP server card guide
• Agent-ready SaaS guide
• Browse the directory