Does Poseidon Research Crawler respect robots.txt?

Not documented. No operator statement says whether Poseidon Research Crawler reads robots.txt, so add the rule but verify in your logs that the requests actually stop.

How do I block Poseidon Research Crawler?

Add the Poseidon Research Crawler token to robots.txt with Disallow: /. If the crawler ignores robots.txt, match the user agent at your CDN or reverse proxy and return 403 there instead.

IPScanner

Other automated crawlers

Poseidon Research Crawler

Q: How do I verify a request really came from Poseidon Research Crawler?

You cannot, at least not from the request itself. No IP range file and no reverse-DNS convention have been published for this agent. The user-agent string is the only signal, and any client can send it, so treat a match as a claim rather than proof. Compare the source IP against hosting and datacenter ranges instead, and rate limit anything that behaves like a crawler.

Poseidon Research Crawler is a bot operated by Poseidon Research that crawls the web automatically. Lab focused on scaling the interpretability research necessary to make better AI systems possible. No IP range list or reverse-DNS convention is published, so a request carrying this user agent cannot be proven genuine and a robots.txt rule alone will not stop a forgery.

Poseidon Research Crawler at a glance

Reference data for the Poseidon Research Crawler crawler
User agent	`Poseidon Research Crawler` Token only. The operator has not published a full user-agent string, so match on the substring rather than an exact header.
Operator	Poseidon Research
Purpose	AI research crawler
Respects robots.txt	Not documented
Verification method	None published, user agent only No IP range file and no reverse-DNS convention have been published for this agent. The user-agent string is the only signal, and any client can send it, so treat a match as a claim rather than proof.
Crawl pattern	No explicit frequency provided.
Robots.txt tokens	`Poseidon Research Crawler`
Operator documentation	None published

Lab focused on scaling the interpretability research necessary to make better AI systems possible.

robots.txt

Allow or block Poseidon Research Crawler

Paste one of these into the robots.txt file at the root of your domain. Rules are per token, so a block on one crawler leaves every other bot untouched.

Block Poseidon Research Crawler

User-agent: Poseidon Research Crawler
Disallow: /

Blocks every path for this crawler only.

Allow Poseidon Research Crawler

User-agent: Poseidon Research Crawler
Allow: /

Explicit allow. Useful when a wildcard rule above it would otherwise catch this crawler.

Allow, except the pages you never want quoted

User-agent: Poseidon Research Crawler
Allow: /
Disallow: /account/
Disallow: /checkout/
Disallow: /search

Edit the Disallow paths to match your own account, checkout and search URLs.

What blocking actually costs you

Blocking Poseidon Research Crawler stops this specific token. Check your logs afterwards, because operators that ignore robots.txt often come back under a different name.

Block every crawler in the directory at once

Verification

Is that really Poseidon Research Crawler?

A user-agent header is a string the client chooses. Scrapers copy Poseidon Research Crawler precisely because site owners allow it. No IP range file and no reverse-DNS convention have been published for this agent. The user-agent string is the only signal, and any client can send it, so treat a match as a claim rather than proof.

Paste the IP address from your access log below. You will see whether it belongs to a hosting provider, a residential proxy pool or a Tor exit, plus the ASN that announces it, which is what tells you whether the claim holds up.

Datacenter IP detectionNearly every real AI crawler egresses from cloud ranges. A residential IP claiming to be one is the first thing to check.IP reputation checkSee whether the address behind a fake crawler hit has a history of abuse elsewhere.Residential proxy detectionScrapers that get blocked by user agent often come back through residential proxy pools.

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Agentscan

Identify crawlers automatically instead of by hand

Agentscan checks a request against published crawler ranges, reverse DNS and hosting data, then returns a verdict your edge can act on. One call per request, no range files to keep up to date.

How Agentscan works API reference Pricing What is my IP

FAQ