# Perplexity-User

> Fetches a page because a Perplexity user asked for it. Perplexity documents that this fetch is user-initiated and is therefore not governed by robots.txt — a robots rule will not stop it, by stated policy.

| field | value |
|---|---|
| operator | Perplexity |
| category | User-triggered fetchers |
| robots.txt token | `Perplexity-User` |
| user-agent contains | `Perplexity-User` |
| robots.txt | not governed by robots.txt (user-initiated, by operator policy) |
| verify by | published IP ranges |
| published IP ranges | https://www.perplexity.ai/perplexity-user.json |
| prefixes mirrored | 4 IPv4 / 0 IPv6 |
| operator docs | https://docs.perplexity.ai/guides/bots |
| last reviewed | 2026-09-14 |

## What blocking it costs you

Not controllable via robots.txt. If you must stop it, verify by the published IP ranges and block at the edge — and accept that users who ask for your page get an error.

## Full user-agent string

```
Mozilla/5.0 (Macintosh; Intel Mac OS X 10_15_7) AppleWebKit/537.36 (KHTML, like Gecko) Chrome/W.X.Y.Z Safari/537.36; compatible; Perplexity-User/1.0; +https://perplexity.ai/perplexity-user
```

## Block it

```
User-agent: Perplexity-User
Disallow: /
```

## Allow it

```
User-agent: Perplexity-User
Allow: /
```

## Ask this page a question, with one GET

A question about this page, answered by a call you can make right now — no key, no account, no JSON-RPC, nothing to assemble. The query string is already filled in with this page's own subject.

- **How do I prove a request really is Perplexity-User?**  
  `curl -s 'https://www.pathwren.workers.dev/tools/verification-methods?crawler=perplexity-user&s=client-dossiers'`  
  The verification method its operator actually publishes — published IP ranges, reverse DNS, or nothing at all — and the mirror of it on this host.
- **Is 18.97.21.0 really Perplexity-User?**  
  `curl -s 'https://www.pathwren.workers.dev/tools/verify-crawler?ip=18.97.21.0&ua=Perplexity-User&s=client-dossiers'`  
  That address checked against every prefix this host mirrors. 18.97.21.0 is the first address of 18.97.21.0/30, one of the ranges listed on this page — so the link is a worked example that returns a match. Swap in an address from your own log.

Every parameter above is a value the endpoint reads, not an address it visits: nothing is fetched on your behalf. Called without any parameter, each endpoint returns its own specification instead of an error.

JSON: https://www.pathwren.workers.dev/crawler/perplexity-user.json · index: https://www.pathwren.workers.dev/llms.txt