Google just made it official. They added llms.txt as a Lighthouse audit. That means Google is now checking whether your website has a file that helps AI agents understand what your business does. Think of it like robots.txt was for search crawlers. llms.txt is the same thing for ChatGPT, Perplexity, Gemini, and every AI tool scraping the web for answers. Here's what it is: → A plain text file at yoursite.com/llms.txt → It summarizes your business, products, and key pages in a format AI can read → It helps LLMs cite you accurately instead of guessing I just created one for @HireAutoM8. Here's what it looks like so you can model yours from it: autom8.net/llms.txt If your business isn't showing up in AI answers, this is step one. Founders: go create yours today. This is the new robots.txt.