Have you heard of llms.txt? If not, don’t worry—you’re in the right place! In this article, we’ll break down what it is, what it’s for, and why you should consider implementing it on your website.

Think of it as a treasure map for language agents, not just another robots.txt.

Since mid-2024, several websites have started incorporating a new file on their servers: llms.txt. This file doesn’t replace the old robots.txt or sitemaps.xml, but seeks to fulfill a new function: guiding language models (LLMs) toward the most relevant and high-quality content.

What is llms.txt for?

Models like GPT, Claude, or Gemini consume text from the web to answer questions or generate content. But unlike a Google bot, they don’t need to explore all menus, widgets, or complex structures. llms.txt helps them focus on what matters.

In other words: it defines a curated and optimized version of the content that truly represents your brand.

How is it structured?

An llms.txt file is simply a plain text file located at the site root (/llms.txt) and has this basic Markdown structure:

# ElPuas Digital Crafts
> We design WordPress, AI and web content solutions with human impact.

## Services
- [Custom WordPress Development](https://elpuasdigitalcrafts.com/servicios/wordpress)
- [Custom Plugins](https://elpuasdigitalcrafts.com/servicios/plugins)
- [Gutenberg Block Design](https://elpuasdigitalcrafts.com/servicios/bloques)

## Featured Projects
- [MonkeyScrubs](https://monkeyscrubs.com)
- [pb-cr](https://pb-cr.com)
- [Costa Rica Adventurers](https://costaricaadventurers.com)

Who’s already using it?

• Yoast SEO included support for llms.txt in June 2025.
• Mintlify, Anthropic, and Cloudflare already use it to improve semantic ingestion.
• More than 2,000 domains have an active version of the file (as of June 2025).

Benefits

• Reduces tokenization costs for LLMs.
• Improves your brand representation in AI-powered tools.
• Prevents models from learning outdated or unauthorized content.

Risks or criticisms

• Google has indicated it doesn’t recognize concrete benefits (for now).
• If misconfigured, it could generate duplication or confusion.
• There’s no official standard accepted by all LLM engines.

Should you implement it?

In our opinion, yes. Although it’s still in experimental phase, it’s an easy way to start controlling how your content is interpreted by AI agents.

Resources

• llmstxt.org
• Yoast on llms.txt
• Mintlify: The value of llms.txt