---
title: "Comet: user agent, token, block rate | Agent Ready Crawlers"
description: "Comet from Perplexity: no robots.txt token, task agent purpose and what a site can check; no exact user-agent string is published. Read 2026-11-04."
canonical: https://agentreadycrawlers.com/crawlers/perplexity-comet
site: "Agent Ready Crawlers"
last_updated: 2026-11-04
section: "Crawlers"
---

# Comet: user agent, token, block rate | Agent Ready Crawlers

> Comet from Perplexity: no robots.txt token, task agent purpose and what a site can check; no exact user-agent string is published. Read 2026-11-04.

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

Browsing agent from Perplexity

# Comet (browser assistant)

In short

Comet (browser assistant) is Perplexity's browsing agent. Comet has no robots.txt token, so robots.txt cannot address it and the crawl cannot measure a block rate. The operator publishes nothing a site can check. Comet has no operator bot documentation, checked 2026-11-04. Runs on the user's device and IP.

Operator

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

Purpose

Task agent [All task agent rows](https://agentreadycrawlers.com/crawlers/purpose/task-agent/). A browsing agent that clicks, fills forms and finishes a job for a person.

User-agent string

No exact string is published. What the operator or a third party says: Chrome's user agent from the user's own device; no unique identifier

robots.txt token

None. No robots.txt line can address this agent.

Respects robots.txt

No documentation

operator publishes no bot documentation (checked 2026-11-04) for Comet's agent; it browses as the user's Chromium browser. [Source](https://www.verisoul.ai/agents/perplexity-comet), read 2026-11-04.

Operator publishes no bot documentation (checked 2026-11-04).

Verification

Nothing published

The operator publishes no list, reverse DNS pattern or key directory a site owner can check. [Documentation](https://www.centinelanalytica.com/blog/ai-browser-agents), read 2026-11-04.

IP ranges

Not published.

Rate behaviour

Runs on the user's device and IP.

Block rate

None: the agent has no token, so a robots.txt block rate does not exist.

Documentation

Operator publishes no bot documentation (checked 2026-11-04). [Closest page read](https://www.verisoul.ai/agents/perplexity-comet).

Note. Amazon's 2025-11-04 suit argued Comet sends Chrome's user agent with no unique identifier; the Ninth Circuit vacated the preliminary injunction on 2026-08-04, per Verisoul's summary of the record.

## Allow and refuse lines

This agent has no robots.txt token, so there are no lines to copy. Without a token, a published list or a signature, a site owner cannot tell it from an ordinary visitor by request alone.

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
-   [Perplexity-User](https://agentreadycrawlers.com/crawlers/perplexity-user/) Live answer fetch token Perplexity-User
-   [Perplexity Computer](https://agentreadycrawlers.com/crawlers/perplexity-computer/) Task agent no token

## Sources

-   [verisoul.ai: perplexity comet](https://www.verisoul.ai/agents/perplexity-comet) read 2026-11-04
-   [centinelanalytica.com: ai browser agents](https://www.centinelanalytica.com/blog/ai-browser-agents) read 2026-11-04
-   [Perplexity Crawlers](https://docs.perplexity.ai/guides/bots) read 2026-11-04

Last reviewed 2026-11-04