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visiblee
Free AI crawler tool

AI Bot Access Checker

See whether your robots.txt allows the AI crawlers behind ChatGPT, Gemini, Perplexity and more. Free, instant, no signup.

Is your site blocking AI crawlers?

Before an AI assistant can mention you, its crawler has to be allowed to read your site. A single line in robots.txt — often added by a plugin or a cautious developer — can block GPTBot, PerplexityBot or Google-Extended and quietly erase you from that engine. This free tool shows, bot by bot, who can and can't read your site.

The AI crawlers that matter

  • GPTBot, OAI-SearchBot, ChatGPT-User — OpenAI / ChatGPT.
  • ClaudeBot — Anthropic / Claude.
  • PerplexityBot — Perplexity.
  • Google-Extended & Googlebot — Gemini and Google AI Overview / AI Mode.
  • Bingbot — Microsoft Copilot. CCBot — Common Crawl, which feeds many models.

Access is necessary, not sufficient

Allowing the crawlers gets you in the door — but being recommended depends on much more: structured data, reviews, comparison content and how often you're cited. Visiblee tracks whether AI assistants actually mention you across ChatGPT, Gemini, Perplexity and Google AI surfaces, and tells you what to fix. Unblock your bots above, then run a free scan.

Further reading:Is your site blocking AI crawlers?

Frequently asked questions

What does the AI Bot Access Checker do?

It reads your robots.txt and shows, for each major AI crawler — GPTBot, ClaudeBot, PerplexityBot, Google-Extended and more — whether your site allows or blocks it. Blocking these bots is a common, invisible reason brands don't appear in AI answers.

Is it free?

Yes — enter your website for an instant per-bot report, no signup.

Why does AI bot access matter?

If your robots.txt blocks GPTBot or PerplexityBot, those engines can't read your site — so they can't cite or recommend you. Many sites block AI bots by accident (or via a plugin default) and lose AI visibility without realising.

Should I allow every AI bot?

If you want AI visibility, yes — allow the crawlers that power the assistants your buyers use (OpenAI, Anthropic, Perplexity, Google, Microsoft). Some publishers block training bots like GPTBot or CCBot for content-rights reasons; just know that blocking them reduces your presence in those tools.

What's the difference between these bots?

Each engine uses its own crawler: GPTBot and OAI-SearchBot feed ChatGPT, ClaudeBot feeds Claude, PerplexityBot feeds Perplexity, Google-Extended feeds Gemini, and Googlebot/Bingbot power Google's AI Overview and Copilot. Allowing each one keeps you visible in that engine.

Explore more free AI tools

Part of Visiblee's free toolkit for winning in AI search.

GEO Audit Tool

Score your site's AI-answer readiness: entities, schema, comparison pages and citations.

llms.txt Generator

Generate and validate an llms.txt file so AI crawlers understand your site.

Schema Markup Analyzer

Extract and validate your structured data, and find the AI-critical schema types you're missing.

AI Crawlability Checker

See how much of your content AI crawlers can read without JavaScript.

ChatGPT Brand Visibility Checker

See whether ChatGPT recommends your brand — and which competitors it names instead.

AI Visibility Checker

Check how visible your brand is across ChatGPT, Gemini, Perplexity and Google AI answers.