llms-txt

Generate, validate, and optimize llms.txt files for websites and documentation.

1|Updated Feb 13, 2026
One-click install
npx skills add https://github.com/AgentCTO/claude-skills --skill llms-txt
Or copy as Structured Prompt for Agent
Please help me install this Agent Skill.
Skill: llms-txt
Source: https://github.com/AgentCTO/claude-skills/tree/main/skills/llms-txt
Command: npx skills add https://github.com/AgentCTO/claude-skills --skill llms-txt

SYSTEM DOCUMENTATION & REQUIREMENTS

💡 This Skill includes references (resource) components.

What problem does it solve?

This Skill helps you generate, validate, and optimize llms.txt files, ensuring your websites and documentation are easily understood and processed by Large Language Models (LLMs).

Core Features & Use Cases

  • Generate llms.txt: Create the standard Markdown file that guides LLMs to your most important content.
  • Companion Files: Produce llms-full.txt (all content) and llms-small.txt (structural outline) for different LLM needs.
  • Validation: Audit existing or generated files against best practices and the official specification.
  • Use Case: You've just launched a new documentation site and want to ensure AI assistants can quickly find and understand key information about your product.

Quick Start

Use the llms-txt skill to generate an llms.txt file for your website.

Frequently Asked Questions about llms-txt

High-intent search queries and answers about installing and using this skill.

FAQPage Schema
What is an llms.txt file and how does it make website documentation LLM-friendly?

To create an llms.txt file, you define your website's key content sections in a standard Markdown format. This generates a structural guide that helps LLMs efficiently locate and ingest your most important documentation.

How do I generate companion files like llms-full.txt and llms-small.txt for my website?

Generating companion files like llms-full.txt and llms-small.txt provides different levels of detail for AI processing. llms-full.txt contains all website content, while llms-small.txt provides a structural outline for lightweight processing.

How can I validate an existing llms.txt file against the official specification?

Validating an existing llms.txt file involves auditing it against best practices and the official specification. This process ensures your Markdown structure is correctly formatted for AI assistants to parse.

When do I need to add an llms.txt file to my documentation site?

You need an llms.txt file when launching a new documentation site or improving existing web content accessibility. It ensures AI assistants can quickly find and understand key product information.

Does adding an llms.txt file improve website SEO for AI search engines?

Adding an llms.txt file improves website SEO by optimizing content specifically for AI accessibility. It ensures Large Language Models can efficiently locate and process your key documentation for AI-driven search visibility.