---
title: "Perplexity-User: user agent, token, block rate | Agent Ready Crawlers"
description: "Perplexity-User from Perplexity: exact user-agent string, robots.txt token Perplexity-User, live answer fetch purpose and how to verify it. Read 2026-11-04."
canonical: https://agentreadycrawlers.com/crawlers/perplexity-user
site: "Agent Ready Crawlers"
last_updated: 2026-11-04
section: "Crawlers"
---

# Perplexity-User: user agent, token, block rate | Agent Ready Crawlers

> Perplexity-User from Perplexity: exact user-agent string, robots.txt token Perplexity-User, live answer fetch purpose and how to verify it. Read 2026-11-04.

Source: https://agentreadycrawlers.com/crawlers/perplexity-user
Site: Agent Ready Crawlers
Last reviewed: 2026-11-04

Live answer fetcher from Perplexity

# Perplexity-User

In short

Perplexity-User is Perplexity's live answer fetcher. Check a visitor against the operator's published IP list. 8.3 percent of 5,938 top-10,000 sites with a parsed robots.txt disallow it at the root (crawl of 2026-11-04). Its user-agent entry: Mozilla/5.0 (compatible; Perplexity-User/1.0; +https://perplexity.ai/perplexity-user). Perplexity-User: since a user requested the fetch, this fetcher generally ignores robots.txt rules.

Operator

[Perplexity](https://agentreadycrawlers.com/crawlers/operator/perplexity/) Vendor profile: [Perplexity](https://agentreadycrawlers.com/vendors/perplexity/)

Purpose

Live answer fetch [All live answer fetch rows](https://agentreadycrawlers.com/crawlers/purpose/live-answer-fetch/). Fetches a page because a person asked an assistant about it, one request at a time.

User-agent string

`Mozilla/5.0 (compatible; Perplexity-User/1.0; +https://perplexity.ai/perplexity-user)`

robots.txt token

`Perplexity-User` Matched case-insensitively (RFC 9309). The token and the user-agent string are different things.

Respects robots.txt

May not apply (user-triggered)

Perplexity: since a user requested the fetch, this fetcher generally ignores robots.txt rules. [Source](https://docs.perplexity.ai/guides/bots), read 2026-11-04.

Verification

Published IP list (JSON)

Match the source address of a request against the operator's published list. [Documentation](https://www.perplexity.ai/perplexity-user.json), read 2026-11-04.

IP ranges

[perplexity.ai/perplexity-user.json](https://www.perplexity.ai/perplexity-user.json)

Rate behaviour

User-triggered; no crawl rate published.

Vendor rule names

-   **Cloudflare:** Custom rule: (http.user\_agent contains "Perplexity-User" and ip.src in {ranges})
-   **AWS WAF:** IP set plus User-Agent string match

Block rate

**8.3%** of 5,938 top-10,000 sites with a parsed robots.txt disallow `Perplexity-User` at the root (495 sites). 4.6% name it; 3.7% refuse it only through a \* group. Rank 23 of 31 tokens measured.

Across all 8,624 parsed robots.txt files in the crawl: 5.9% (3.2% named). Crawl of 2026-11-04; [report](https://agentreadycrawlers.com/block-rates/).

Documentation

[docs.perplexity.ai](https://docs.perplexity.ai/guides/bots), read 2026-11-04.

Note. Robots.txt lines for Perplexity-User are a preference Perplexity says it generally does not apply; enforce at the WAF if needed.

## Allow and refuse lines

### To allow Perplexity-User

User-agent: Perplexity-User
Allow: /

### To refuse Perplexity-User

User-agent: Perplexity-User
Disallow: /

Refusing or allowing in robots.txt states a preference. For this row the operator or its documentation says robots.txt may not govern the fetch, so enforcement belongs in your WAF.

## Perplexity in the Verification Ledger

Two IP lists and WAF recipes; no key directory (404 at www.perplexity.ai, 2026-11-04); nothing for Comet. [All operators](https://agentreadycrawlers.com/verification/).

IP lists

-   [www.perplexity.ai/perplexitybot.json](https://www.perplexity.ai/perplexitybot.json)
-   [www.perplexity.ai/perplexity-user.json](https://www.perplexity.ai/perplexity-user.json)

Reverse DNS

publishes nothing

Key directory

publishes nothing

Cloudflare

not checked

Visa TAP registry

no public operator-level registration found (checked 2026-11-04)

Mastercard Agent Pay

no public operator-level registration found (checked 2026-11-04)

## Other Perplexity rows

-   [PerplexityBot](https://agentreadycrawlers.com/crawlers/perplexitybot/) Search index token PerplexityBot
-   [Comet (browser assistant)](https://agentreadycrawlers.com/crawlers/perplexity-comet/) Task agent no token
-   [Perplexity Computer](https://agentreadycrawlers.com/crawlers/perplexity-computer/) Task agent no token

## Sources

-   [Perplexity Crawlers](https://docs.perplexity.ai/guides/bots) read 2026-11-04
-   [perplexity.ai: perplexity user (JSON)](https://www.perplexity.ai/perplexity-user.json) read 2026-11-04

Last reviewed 2026-11-04