Question 1

Which AI crawlers does this check?

Accepted Answer

GPTBot and OAI-SearchBot (ChatGPT), bingbot (the Bing index ChatGPT search reads), ClaudeBot and anthropic-ai (Claude), PerplexityBot, Google-Extended (Gemini and AI Overviews), Applebot-Extended, Bytespider, CCBot, Amazonbot, Meta-ExternalAgent and cohere-ai.

Question 2

Does blocking GPTBot make my site invisible to ChatGPT?

Accepted Answer

Blocking GPTBot stops OpenAI reading your site for training and browsing, and blocking OAI-SearchBot or bingbot removes you from the index ChatGPT search answers from. Blocked crawlers mean those engines cannot read or cite your pages.

Question 3

Is a robots.txt allow enough for AI visibility?

Accepted Answer

No — a firewall or bot-protection layer can still block crawlers a robots.txt allows, and access alone doesn't make engines recommend you. The full free scan also measures whether the engines actually name you.

Which AI engines can read your site?