Etoolio

AI Crawler Access Checker

Free AI crawler checker. Enter a domain to see whether GPTBot, ClaudeBot, PerplexityBot, Google-Extended and other AI bots are allowed or blocked by your robots.txt, with copy-paste fixes.

We read the site's robots.txt and show whether each AI crawler can access it.

What the AI Crawler Access Checker does

This tool reads your website's robots.txt file and shows, one crawler at a time, whether the major AI bots are allowed or blocked from accessing your site. It covers the crawlers that matter most in 2026, from OpenAI's GPTBot and OAI-SearchBot to Anthropic's ClaudeBot, PerplexityBot, Google-Extended, CCBot, Bytespider and more, and gives you copy-paste robots.txt rules to change any of it.

Why AI crawler access matters

Search is moving into AI answers. When someone asks ChatGPT, Perplexity or Google's AI Overviews a question, those systems can only mention pages their crawlers were allowed to read. If your robots.txt blocks them, even by accident, you disappear from AI answers exactly as the web shifts toward them. This checker makes that access visible so you are not invisible by mistake.

Two different decisions

  • AI search / answer crawlers (OAI-SearchBot, PerplexityBot, ChatGPT-User, Claude-User): allowing these lets AI engines find and cite you. Block them and you lose AI-search visibility.
  • AI training crawlers (GPTBot, ClaudeBot, Google-Extended, Applebot-Extended, CCBot, Bytespider): these gather data to train AI models. Blocking them is a content-rights choice and does not affect whether you appear in AI search results.

How to use it

  • Enter your domain (for example example.com) and press Check access.
  • Read the verdicts, grouped by AI answer engines, search engines and training crawlers.
  • View your robots.txt inline to see the exact rules in force.
  • Copy a fix. Use the "make sure AI search engines can find you" block, or the "block AI training but keep search" block, and paste it into your robots.txt.

Good to know

  • A "Blocked" verdict means the crawler is disallowed from your site root by a Disallow: / rule that applies to it.
  • No robots.txt at all means every crawler is allowed by default, that is normal, not a problem.
  • robots.txt is a public file and a request, not a lock: well-behaved crawlers honour it, but it is not a security control.
  • Once crawlers can reach you, help them understand your site with an llms.txt file.

Good to know

AI Crawler Access Checker, frequently asked questions

What does the AI Crawler Access Checker do?

It reads your website's robots.txt and tells you, bot by bot, whether AI crawlers such as GPTBot, ClaudeBot, PerplexityBot, Google-Extended and CCBot are allowed to access your site or blocked. It then gives you copy-paste robots.txt rules to change that.

Why does it matter if AI crawlers are blocked?

AI answer engines like ChatGPT Search, Perplexity and Google's AI Overviews can only cite pages their crawlers are allowed to read. If you block them in robots.txt, you become invisible in AI answers. Blocking AI training crawlers, on the other hand, keeps your content out of model training, a separate choice.

What is the difference between GPTBot and OAI-SearchBot?

GPTBot collects data to train OpenAI's models, so blocking it is about training opt-out. OAI-SearchBot indexes pages for ChatGPT Search results, so blocking it hides you from ChatGPT's answers. They are controlled separately in robots.txt.

How do I allow or block a specific AI crawler?

Add a rule to your robots.txt naming the bot's user-agent, for example 'User-agent: GPTBot' followed by 'Disallow: /' to block it or 'Allow: /' to allow it. This tool generates both ready-to-paste blocks for you.

Does blocking Google-Extended affect my Google Search ranking?

No. Google-Extended only controls whether your content is used to train Google's Gemini and Vertex AI models. It does not affect Googlebot or your normal Google Search ranking, which are governed separately.

Is this checker free?

Yes, it is free with no signup, and it works on any public domain. It only reads the site's robots.txt file, which is public information.

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