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The AI Crawler Roster: Who to Allow in robots.txt and Why

You cannot be cited by a system that cannot read you. Here is the current agent roster and a sane access policy.

March 5, 2026 · 5 min read · AEO GEO Hourly Editorial

Citation starts with access. If GPTBot or ClaudeBot is blocked, your GEO ceiling is zero regardless of content quality, and blocks hide in CDN rules as often as in robots.txt. For a commercial brand the trade is simple: visibility inside AI answers is worth more than theoretical content protection, so allow retrieval agents on public pages and verify in logs that they actually crawl.

Get into the retrieval pool

Generative engines compose answers from a small pool of retrieved sources per topic. Run your real buyer prompts monthly, log every cited domain, and treat that list as your outreach plan. A placement inside the pool outperforms dozens of generic links.

Publish quotable claims

Models quote specifics: numbers, definitions, named comparisons. Vague service pages never get cited; pages with a defensible statistic get lifted repeatedly. Give every money page at least one claim worth quoting verbatim.

Key takeaways

OpenAI: GPTBot, OAI-SearchBot, ChatGPT-User
Anthropic: ClaudeBot, Claude-User
Perplexity: PerplexityBot, Perplexity-User
Google-Extended, Applebot-Extended, CCBot reviewed quarterly

Keep entity signals identical everywhere

When your site, profiles, and third-party mentions describe the brand differently, models hedge and cite someone else. Lock one canonical description of what you do and for whom, then deploy it everywhere without creative variation.

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