Perplexity-User

AI assistant fetcher

The fetcher used when a Perplexity user asks about a specific URL. Perplexity documents that because these are direct user requests, this agent generally ignores robots.txt rules.

OperatorPerplexity
TypeAI assistant fetcher
Respects robots.txtPartially
DocumentationOfficial operator documentation

Perplexity-User user-agent string

This is how Perplexity-User identifies itself in your server logs:

Mozilla/5.0 AppleWebKit/537.36 (KHTML, like Gecko); compatible; Perplexity-User/1.0; +https://perplexity.ai/perplexity-user

How to block Perplexity-User in robots.txt

Add this to the robots.txt file at the root of your site:

Block Perplexity-User

User-agent: Perplexity-User
Disallow: /

Explicitly allow Perplexity-User

User-agent: Perplexity-User
Allow: /

What blocking changes: A robots.txt block is documented as generally not honored for user-initiated fetches; blocking at the network/WAF level is the reliable option. Doing so stops Perplexity from reading your pages on request.

Want to decide for all AI bots at once? Use the AI robots.txt generator.

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