llms.txt Generator & Validator
Generate llms.txt files to help AI systems understand your website. An emerging community standard - adoption by major AI systems is still unproven.
About llms.txt adoption
As of October 2026, llms.txt is a community proposal with no official support from major AI systems (ChatGPT, Claude, Gemini, Perplexity). While some experimental tools may read it, do not rely on llms.txt for controlling AI access. Use robots.txt for that. This tool is for early adopters interested in the emerging standard.
Generate llms.txt
Validate Existing llms.txt
How It Works
What is llms.txt? It's a proposed standard file (placed at yoursite.com/llms.txt) that provides a structured overview of your site for AI systems. Think of it as a README for AI crawlers. The format uses markdown with sections for description, key links, and contact info.
Generator methodology: This tool creates llms.txt following llmstxt.org format: title (# heading), blockquote summary (>description), site URL as plain text, optional Key Sections with markdown links, and Contact section.
Validator methodology: The validator requires a title (# heading) as the first non-empty line, warns if a blockquote summary is missing, accepts relative markdown links, and flags non-markdown-link list items under ## sections.
Current adoption status (October 2026): llms.txt is a community proposal with no official backing from OpenAI, Anthropic, Google, or other major AI providers. Some experimental tools and indie projects may read it, but do not rely on it. Use robots.txt to control AI crawler access, not llms.txt.
Example llms.txt
For a Documentation Site
# Developer Documentation > Comprehensive API and SDK documentation for developers. https://docs.example.com ## Key Sections - [Getting Started](https://docs.example.com/getting-started) - [API Reference](https://docs.example.com/api) - [Examples](https://docs.example.com/examples) - [Changelog](https://docs.example.com/changelog) ## Contact For questions or content usage inquiries: support@example.com
Frequently Asked Questions
What is llms.txt and who uses it?
llms.txt is a proposed standard file (placed at yoursite.com/llms.txt) that helps AI systems understand your website structure and content. As of October 2026, adoption by major AI systems remains unproven and not widely supported. It is an emerging community proposal, not an established standard like robots.txt.
Do AI systems actually read llms.txt?
Not reliably. While some community projects and experimental tools may respect llms.txt, major AI systems (ChatGPT, Claude, Gemini) do not officially support it as of October 2026. This is an emerging proposal with uncertain adoption. Use it if you want to be an early adopter, but do not rely on it for controlling AI access (use robots.txt for that).
How is llms.txt different from robots.txt?
robots.txt tells crawlers what NOT to access (blocking). llms.txt tells AI systems what content IS available and how to understand it (guiding). robots.txt is an established standard since 1994 and widely respected. llms.txt is a 2024 community proposal with no official adoption yet.
What should I include in llms.txt?
Include: site name, brief description, key section links (docs, API, blog), and contact info. Use markdown formatting. Keep it concise (under 5000 characters). Think of it as a README for AI systems. Focus on structure and navigation, not full content.
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