llms.txt checker
Review your llms.txt alongside the access and content signals that matter for AI readiness.
ChatGPT
Claude
Gemini
PerplexityInstant preview · Full report free by email
Includes all AI platforms and all five readiness categories.
canairead.me
llms.txt checker · Full AI readiness report included
Example AI readiness report
canairead.me · 92/100
What we check
llms.txt is a proposed convention for giving AI systems a concise, curated map of your key content. Adoption among AI platforms is still limited — treat it as a helpful extra, not a priority fix.
- Whether /llms.txt exists and is reachable
- Whether it follows the proposed markdown structure
- Whether linked pages actually exist and resolve
Common problems
Missing entirely
Most sites don't have one yet — this alone isn't a red flag.
Treated as an SEO silver bullet
Some guides overstate llms.txt's current impact; no major AI platform has confirmed it materially affects citations today.
How to fix them
Publish a short, honest summary
A few sentences about what your site is, plus links to your most important pages, is enough — this doesn't need to be exhaustive.
Prioritise the fundamentals first
robots.txt, structured data and clean HTML matter more today than llms.txt does.
Frequently asked
Do ChatGPT, Claude or Perplexity currently use llms.txt?
Support and usage vary and are evolving. Treat it as an experimental, low-cost addition rather than something to prioritise over core technical fundamentals.
Will adding llms.txt improve my score significantly?
It contributes a small amount to one category. Fixing access, structured data or entity clarity issues will move your score far more.