llms.txt
Checker
Enter your URL. AISearch Global checks whether your site publishes an llms.txt file — an optional, proposed convention, not a required or widely-adopted standard. Most AI systems don't currently read it, so its absence isn't a sign your site is inaccessible to AI.
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AISearch Global llms.txt Checker · aisearch.global
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yourdomain.com/llms.txt): a plain-text markdown file listing your key pages with a one-line summary of what each covers.Need help deciding which findings matter?
llms.txt is a minor, optional signal. Get a checked, prioritised DIY audit with AISearch Global's $1,500 Founder Audit — dated AI-search observations plus builder-specific fix instructions.
Built by AISearch Global · Sydney, Australia
About this tool
The AISearch Global llms.txt Checker looks for a plain-text llms.txt file
at your site's root, an emerging, community-proposed standard that gives AI systems a curated,
structured summary of your most important pages, similar in spirit to sitemap.xml but
written for language models. AISearch Global publishes its own at
aisearch.global/llms.txt.
llms.txt is optional, not a required or widely-adopted standard, and most AI systems don't currently read it. This tool reports whether the file exists — it does not mean, and its absence should not be read as, "your site is inaccessible to AI." It's low-effort to add and may become more useful as adoption grows, but skip the false urgency: schema markup and robots.txt are the established signals worth prioritising first.
Frequently asked questions
What is llms.txt?
llms.txt is an emerging, community-proposed standard: a plain-text file at a site's root that gives AI systems a structured, curated summary of a site's key pages and what each one covers, similar in spirit to sitemap.xml but written for language models rather than search-engine crawlers.
What does the llms.txt Checker report?
It checks whether llms.txt exists at your site's root, shows the first content line, and counts how many markdown-style links the file contains.
Do I need llms.txt if I already have good schema and robots.txt?
No. llms.txt is optional and still-emerging, not yet as established as schema markup or robots.txt, and most AI systems don't currently read it at all. Publishing one is low-effort and may become more useful over time, but its absence does not mean your site is inaccessible to AI.
If llms.txt is missing, does that mean my site is invisible to AI?
No. Most AI systems today don't read llms.txt at all, so a missing file says nothing about whether ChatGPT, Perplexity, or Google's AI Overviews can find and cite your site. This tool only reports whether the file exists, not whether adding one would change your AI visibility.