Glossary
AI Crawler Access
Whether AI engines' web crawlers (GPTBot, ClaudeBot, PerplexityBot, Google-Extended) are allowed to fetch your content via robots.txt.
By Teeming Chew, Founder Last updated
AI engines use distinct user-agents for their training and live-retrieval crawlers. If your robots.txt disallows them, your content cannot be cited, even if it's the best answer to a user's question.
Which AI crawler user-agents should you allow?
At minimum: GPTBot (OpenAI training), ChatGPT-User (OpenAI live retrieval), OAI-SearchBot (ChatGPT Search), ClaudeBot and anthropic-ai (Anthropic), PerplexityBot and Perplexity-User (Perplexity), Google-Extended (Gemini), Applebot-Extended, Amazonbot, and Meta-ExternalAgent. The AI crawlers directory lists each bot's user-agent token, what it feeds, and copy-paste robots.txt rules.
How do you confirm crawler access?
Inspect your /robots.txt and look for per-user-agent Disallow rules. Cite Hustle's audit feature also tests every relevant user-agent and reports which are allowed or blocked.
Part of the Cite Hustle GEO glossary: definitions for generative engine optimization and AI search. See how it fits the bigger picture in the GEO methodology.