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AI Crawler Access Checker

Check whether AI bots (GPTBot, ClaudeBot, Google-Extended, PerplexityBot, CCBot and more) are allowed or blocked by your robots.txt. Get ready-to-paste rules.

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We fetch https://yourdomain.com/robots.txt and check it against 18 known AI crawlers.

What this checks

Whether bots like GPTBot (OpenAI), ClaudeBot (Anthropic), Google-Extended, PerplexityBot, CCBot and others are allowed to crawl your site for AI training and AI search. You decide whether that is what you want.

💡 Should you block or allow AI crawlers?

  • Allow if you want visibility in AI answers and citations (publishers, SaaS, most businesses).
  • Block training bots but allow search bots to protect content from model training while staying discoverable — e.g. allow OAI-SearchBot and PerplexityBot, disallow GPTBot and CCBot.
  • Block all if your content is premium, paywalled, or you have licensing concerns.
  • robots.txt is a request, not enforcement — some scrapers ignore it. Combine with server-side blocking for hard control.

About the AI Crawler Access Checker

See at a glance whether AI bots like GPTBot, ClaudeBot, Google-Extended and PerplexityBot are allowed or blocked by your robots.txt, and get ready-to-paste rules to change it.

What this tool does

Enter any domain and we fetch its /robots.txt, parse it, and evaluate it against 18 of the most important AI crawlers. For each bot you get a clear Allowed, Partial, or Blocked verdict plus the exact rule that produced it.

Which crawlers we check

The check covers the major AI training and AI-search agents, including:

  • OpenAI: GPTBot, OAI-SearchBot, ChatGPT-User
  • Anthropic: ClaudeBot, Claude-Web, anthropic-ai
  • Google-Extended (Gemini), PerplexityBot and Perplexity-User
  • CCBot (Common Crawl), Bytespider, Amazonbot, Applebot-Extended, Meta-ExternalAgent and more

Why it matters

AI assistants increasingly answer questions and cite sources directly. Your robots.txt now decides two things at once: whether your content can be used to train models, and whether it can appear in AI search answers. Many sites block these bots by accident, or leave themselves fully open without realizing it.

  • Confirm you are not accidentally blocking AI search that could send you traffic.
  • Protect content from training if you have licensing or IP concerns.
  • Make an intentional, informed choice instead of leaving it to chance.

How to change access

The results page gives you copy-paste robots.txt blocks to either block all AI crawlers or allow them. Add the rules to the robots.txt at your site root, then re-run this tool to confirm the change.

FAQ

Is the AI Crawler Access Checker free?
Yes. Enter a domain and get an instant report with no account required.
What does 'Partial' mean?
Partial means the crawler is allowed on the site but some paths are disallowed (for example Disallow: /admin/). The bot can still access the rest of the site.
Will blocking AI bots hurt my Google rankings?
Blocking Google-Extended only affects Gemini and AI training. It does not block Googlebot, so your normal Google Search rankings are unaffected. Each AI agent is separate from the classic search crawler.
Does robots.txt actually stop AI companies?
Reputable crawlers honor robots.txt, but it is a request rather than technical enforcement. For strict control, combine robots.txt with server-side or firewall blocking by user agent or IP.
What if a site has no robots.txt?
If no robots.txt is found, every crawler is allowed by default, including all AI bots. The tool flags this and shows you how to add rules.

Related tools

Pro tip: pair this tool with Trailing Slash Consistency Checker and Duplicate Parameter URL Finder for a faster SEO workflow.