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Agent directory · AI assistant

Perplexity-User

Fetches a page when someone using Perplexity asks a question that needs it. It acts for one person, in real time.

Run by
Perplexity
Type
AI assistant
Robots.txt name
Perplexity-User
Verifiable
Yes

What Perplexity-User does

Fetches a page when someone using Perplexity asks a question that needs it. It acts for one person, in real time.

As an AI assistant, it fetches pages for a person, in real time, while they use an AI assistant. The kinds of AI agent that visit websites.

Should you allow it?

Almost always allow it. Blocking it means the assistant can't read your pages when a customer asks about you, so it answers from somewhere else. A decision guide for blocking or allowing AI crawlers.

How to allow or block Perplexity-User

Perplexity-User reads the Perplexity-User group in your robots.txt. To block it everywhere:

User-agent: Perplexity-User
Disallow: /

To allow it everywhere, even if another rule blocks other bots:

User-agent: Perplexity-User
Allow: /

Robots.txt is a request, not a lock: well-behaved crawlers follow it, impostors don't. Robots.txt for AI agents.

How it identifies itself

A typical user agent:

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

How to tell if it's really Perplexity-User

You can check a request that claims to be Perplexity-User against what Perplexity publishes:

Requests that use the name but fail these checks are impostors, usually scrapers trying to get past bot protection. Ghost Agent Lab checks every request this way and gives you rules to block impostors. How to verify AI crawlers.

Every Perplexity agent, and a robots.txt for all of them →

Does Perplexity-User visit your site? Ghost Agent Lab reads your CDN or server logs and shows every request from Perplexity-User and 1,566+ other known agents: what they read, what your site sent back, and whether each request was genuine. See agent traffic, or check whether AI agents can use your site for free.