AI crawlers
- OpenAI: GPTBot, OAI-SearchBot, ChatGPT-User
- Anthropic: ClaudeBot, Claude-User, Claude-SearchBot
- Perplexity: PerplexityBot
- Google, Apple, Meta and Common Crawl: Google-Extended, Applebot-Extended, meta-externalagent, CCBot
AI Visibility Checker
Enter your site's address. In under 30 seconds, the tool reads your robots.txt, looks for an llms.txt file, a Markdown version and structured data, then shows what GPTBot, ClaudeBot, PerplexityBot and other AI crawlers can read on your site. This score measures verifiable signals, not a promise. A site that's easier for AI to read has a better chance of being understood and cited accurately, but no tool can guarantee that ChatGPT or Perplexity will name your business.
What we analyse
llms.txt file
- Presence of the file at the root (/llms.txt)
- A proposed convention, not an official standard
- Lists the pages you consider priority for an AI assistant
- Adds to robots.txt and the sitemap, without replacing them
Markdown version
- Alternate link to a .md version of the page
- Plain text, no script or layout to parse
- Lowers the risk that an AI guesses at your content instead of reading it
- Live example on this site with the HU|IA button at the top of the screen
Structured data
- Valid JSON-LD present on the page
- Organization or LocalBusiness type
- Name, address and contact details readable without ambiguity
- The base Google and AI engines use to cite a business
Frequently asked questions
What does the AI visibility checker actually analyze?
The tool reads your site's robots.txt to see if GPTBot, ClaudeBot, PerplexityBot and other AI crawlers are allowed, blocked or unspecified. It also looks for an llms.txt file, a Markdown version of the page and JSON-LD structured data, then scores your site on these four signals.
Does a good score guarantee ChatGPT will cite my business?
No. The score measures verifiable technical signals, not a promise of citation. A site that's easier for AI to read has a better chance of being understood and cited accurately, but no tool can guarantee an engine like ChatGPT or Perplexity will name a specific business.
Is blocking GPTBot or ClaudeBot a problem?
Not necessarily, but the matching assistant can no longer read your site to answer a question about it. Some businesses choose to block them on purpose; the checker only reports what's allowed, blocked or unspecified, without judging that choice.
What exactly is the llms.txt file?
It's a file placed at the root of a site that lists the pages an AI assistant should read first. It's a convention proposed by the community, not an official standard recognized by every AI engine, but a growing number of sites publish one.
What does a Markdown version add to a site?
A Markdown version replaces a page's layout and scripts with plain text, easier for an AI assistant to read. This site publishes one for every page, reachable with the HU|IA button at the top of the screen; you can test it right here by switching modes.
What if my AI visibility score is low?
The full report, sent by email, breaks down the fixes in priority order: robots.txt, llms.txt, Markdown version or structured data. Social Influence's 'Found on Google, cited by AI' system bundles this work if you'd rather hand it to a team.