Your website almost certainly has a robots.txt file — the decades-old standard that tells search crawlers where they may go. In 2026, a companion standard is spreading fast: llms.txt, a plain-markdown file at your domain root that gives AI language models a clean, curated summary of your site.

Why AI Systems Need It

When an AI assistant fetches your website, it fights through navigation menus, cookie banners, sliders and footer clutter to guess what matters. llms.txt removes the guesswork: one file, readable in a single request, stating who you are, what you offer, and where your key pages live. Sites with a good llms.txt are simply easier to represent accurately — and models favour sources they can represent accurately.

What a Good llms.txt Contains

  • A one-paragraph summary of your business: name, location, what you do, who you serve, years in operation.
  • Key facts — address, phone, email, pricing ranges, primary technologies or specialities.
  • Annotated links to your most important pages: services, case studies, FAQ, pricing — each with a one-line description.

You can see a live example at edgesys.tech/llms.txt — the file describes our services, real case studies and locations in exactly the format assistants parse best.

Three Mistakes to Avoid

Marketing language. "Award-winning visionary solutions" gives a model nothing to work with. Write facts. Staleness. An llms.txt contradicting your website erodes trust — update both together. Blocking crawlers while publishing llms.txt. Check your robots.txt actually allows GPTBot, ClaudeBot and PerplexityBot; many security plugins block them silently.

Fifteen-Minute Implementation

Write the file in plain Markdown, name it llms.txt, upload it to your web root so it resolves at yourdomain.com/llms.txt, and reference it with a comment in robots.txt. That is the whole standard. It is the cheapest AI-search investment available — and combined with schema markup and answer-first content, it is how small businesses stay visible as search shifts to assistants. We include it in every SEO engagement as standard.