Keep these open
OAI-SearchBot, Claude-SearchBot and PerplexityBot find pages to show and link in AI search answers. Blocking them can cost you visibility.
Questions
Should I block AI crawlers?
Block training bots like GPTBot, ClaudeBot or Google-Extended if you don't want your content used to train models. Keep search bots like OAI-SearchBot, Claude-SearchBot and PerplexityBot open if you want to be found and cited in AI answers.
Does blocking Google-Extended affect Google Search?
No. Google-Extended only controls use in Gemini apps and Vertex AI. Google Search and AI Overviews use Googlebot, so blocking Google-Extended does not change your rankings.
Do I need an llms.txt file for AI search?
No. llms.txt is an optional file some AI tools read. Google has said it does not use it. It does no harm, but crawl access and content quality matter far more.
How does this tool decide what is allowed?
It follows Google's robots.txt rules. A bot uses its own User-agent group if one exists, otherwise the * group. The longest matching rule wins, and Allow wins a tie.
What if the tool can't reach my site?
Some sites block automated checks, or sit behind a login or firewall. Paste your robots.txt into the box and we check it right in your browser.
What do you do with my email?
We save your email, website and the result so we can send the report and follow up with AI search tips. We never sell it. You can ask us to delete it any time via our privacy policy.