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AI robots.txt checker

See which AI crawlers your robots.txt lets in, from 49 companies at once. Training, search and user fetches are judged separately, with the exact lines to change.

Block training and stay in AI answers, or block it all. Your choice, checked.

Which AI crawlers can read your site?94 crawlers
  • Training23 crawlers · Collects pages that may train AI models
    Not checked
  • Search28 crawlers · Indexes pages so AI answers can cite them
    Not checked
  • User fetch19 crawlers · Reads a page when a person asks about it
    Not checked
  • Other24 crawlers · Ads, data products and AI tools
    Not checked

Reads your live robots.txt once and applies the same rules each crawler uses. Nothing is stored.

Every AI crawler it checks.

Each company runs separate crawlers for training, search and user fetches. A rule for one does not cover the others.

AI crawlers by company and job
CompanyTrainingSearchUser fetchOther
OpenAI
Anthropic–
Google
Perplexity––
Apple––
Meta
Amazon
Microsoft–––
Mistral AI–
Moonshot AI–
Common Crawl–––
ByteDance––

“Reported” crawlers appear in public crawler lists but not in their operator’s current documentation. Web search crawlers are shown because blocking them removes a site from search.

How the check works.

The same rules the crawlers use, applied to your live file.

1

Read robots.txt once

It fetches /robots.txt over HTTPS and follows redirects. No file means every crawler may read every page. A file it can’t read is reported as unknown, not guessed.

2

Match each crawler

Each crawler obeys the groups that name it, or the * group when none do. The longest matching path wins, and Allow wins a tie (RFC 9309).

3

Compare with your goal

Pick “stay in AI answers, skip training” or “block AI crawlers”. It lists the crawlers that differ and writes only the lines you need.

Robots.txt asks; it doesn’t prove who visited. To check whether a request in your logs really came from GPTBot, Googlebot or another crawler, use the AI crawler verifier. To see which crawlers visit and how often, try the AI crawler log analyser.

Questions, answered.

94 crawlers from 49 companies: every crawler with a robots.txt name in Trakkr’s AI crawler directory. That covers training crawlers such as GPTBot and ClaudeBot, search crawlers such as OAI-SearchBot and PerplexityBot, and user fetchers such as ChatGPT-User. Googlebot, Bingbot and Applebot are included because blocking them removes a site from search.

See which AI crawlers actually visit.

Trakkr shows which crawlers read which pages each day, and whether the answers they feed mention you.

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