The single highest-impact GEO signal. Most brands don’t have one. See if yours does — in 5 seconds.
Type your root domain — fawnwear.com, not https://fawnwear.com/llms.txt. We handle the protocol and path.
A safe server-side request from a fixed BrandCitation user-agent. No cookies, no JavaScript, no redirect-following tricks.
Title, blockquote summary, H2 sections, outbound links, word count. We surface exactly what an AI engine would see.
Found → see what works. Not found → copy our ready-to-ship llms.txt template and publish it today.
llms.txt is a plain-text file at the root of your domain that gives AI answer engines a curated, machine-readable summary of your brand, products, and key pages. It is the single highest-impact Generative Engine Optimization (GEO) signal you can ship.
AI engines prioritize sources they can find, parse, and trust quickly. A well-written llms.txt gives them a clean, structured index of your brand — increasing the chance they cite or recommend you over a competitor who has not published one.
robots.txt tells crawlers what they cannot read. llms.txt tells AI engines what they should read and how to describe your brand. Both files should coexist — they serve opposite purposes and complement each other.
The llms.txt specification is currently consumed by Perplexity, ChatGPT browse mode, Claude (with web access), Gemini, and several emerging crawlers. Even engines that do not formally read it benefit from the structured pattern llms.txt encourages.
Create a plain-text file at https://yourdomain.com/llms.txt. Use a single H1 with your brand name, a one-paragraph blockquote summary, H2 sections for About / Products / Differentiators / Contact, and a list of links to your canonical pages.
Use the free BrandCitation llms.txt Checker above. Enter your domain and we fetch /llms.txt, parse it, and report word count, sections, and outbound links. The check takes under 5 seconds and requires no sign-up.