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
- Purpose
- Task agent All task agent rows. 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, read 2026-11-04.
- Verification
Nothing published
The operator publishes no list, reverse DNS pattern or key directory a site owner can check. Documentation, 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.
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.
- IP lists
- 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 Search index
- Perplexity-User Live answer fetch
- Perplexity Computer Task agent
Sources
Last reviewed 2026-11-04