User-triggered fetchers · Perplexity

Perplexity-User

Fetches a page when a Perplexity user asks about it. Perplexity says it generally ignores robots.txt for these requests because a person asked.

Operator: Perplexity
Purpose: Live user request. Fetchers that load a page because a person asked an assistant about it. Blocking one means the assistant can’t open your pages on request.
robots.txt token: Perplexity-User
User agent: Mozilla/5.0 AppleWebKit/537.36 (KHTML, like Gecko; compatible; Perplexity-User/1.0; +https://perplexity.ai/perplexity-user)
Documentation: docs.perplexity.ai/guides/bots

Block Perplexity-User

Add a group naming it to /robots.txt. Compliant crawlers stop before requesting any page. A firewall rule on the user agent is the only way to enforce it against crawlers that ignore robots.txt.

User-agent: Perplexity-User
Disallow: /

Allow Perplexity-User when everything else is blocked

A group naming the bot wins over User-agent: *, so an explicit allow lets it in while your catch-all rules stay in place.

User-agent: Perplexity-User
Allow: /

User-agent: *
Disallow: /

Does Perplexity-User reach your site?

The checker applies your robots.txt the way Perplexity-User does, then requests your page with the user agent above, alongside 29 other bots.

Also run by Perplexity: PerplexityBot.

Other user-triggered fetchers: ChatGPT-User, Claude-User, MistralAI-User, Meta-ExternalFetcher.

Build a complete file with the robots.txt generator.