Perplexity crawlers

Perplexity operates 2 crawlers that may reach your site. They do different jobs, so a single blanket rule for all of them is almost always the wrong call.

User-agentTypeWhat it does
PerplexityBotSearchBuilds the index an assistant searches when it answers.
Perplexity-UserUser-triggeredFetches your page because someone asked about it just now.

What blocking each one costs

Search
Blocking removes you from answers happening right now.
User-triggered
Blocking means that person gets told the page could not be read.

robots.txt

To let every Perplexity crawler through:

User-agent: PerplexityBot
Allow: /

User-agent: Perplexity-User
Allow: /

To block all of them:

User-agent: PerplexityBot
Disallow: /

User-agent: Perplexity-User
Disallow: /

robots.txt is honoured voluntarily. It is the right way to state your intent, and it is not an access control — treat anything you genuinely need kept out as needing authentication.

Sources

Is Perplexity allowed on your site?

We'll read your robots.txt and tell you which AI crawlers it lets through. No signup.