How do I set up an llms.txt file, and how does it affect AI search visibility?

An llms.txt file is generated in Markdown format at the root of the domain example.com/llms.txt with a single H1 heading, a Blockquote summary, H2 sections listing links in the form [page name](url): description encoded in UTF‑8 and separated by fixed line breaks. This file improves the discovery of site content by LLM models such as GPTBot and ClaudeBot and increases the Citation Share in generative search results, boosting your visibility in AI search engines without relying on traditional SEO optimizations.

• The specified llms.txt format ensures that bots can quickly extract the site structure and prioritize high‑value pages What is llms.txt and Why Should You Implement It Now?
• The llms.txt directive contributes to a higher citation rate from LLMs and redefines the visibility metric to “Citation Share” instead of keyword ranking What if domains cited by LLMs have low overlap with Google search results?