Poseidon Research Crawler: what it is, who runs it, and how to allow or block it

Poseidon Research Crawler is a crawler run by Poseidon Research. It reads pages ahead of time, to train a model or to build an index. Its name in robots.txt, how it shows up in server logs, whether its identity can be checked, and how to allow or refuse it on each platform.

This response

You are ClaudeBot (Anthropic). Citable recognised you as an AI agent, so this is https://getcitable.in/crawlers/poseidon-research-crawler with the UI removed — the content only. A browser asking for the same address gets the full designed page.

What Poseidon Research Crawler is

Poseidon Research Crawler is a crawler run by Poseidon Research. It reads pages ahead of time, to train a model or to build an index.

Should you refuse it?

Poseidon Research Crawler reads ahead of time. Refusing it keeps your pages out of what Poseidon Research collects them for. It does not change how Google or Bing rank you: search crawlers go by other names, with rules of their own.

robots.txt is a request. A crawler that honours it stays out; nothing in the file stops one that does not. What is enforced is what the server or the edge in front of it refuses.

Is a request really Poseidon Research Crawler?

Citable holds no published address list for Poseidon Research, so a read that claims to be Poseidon Research Crawler is recorded as unknown rather than verified. A user agent is a claim, and anyone can send it.

Allowing or refusing Poseidon Research Crawler in robots.txt

Add a group under its name, “User-agent: Poseidon Research Crawler”. “Allow: /” lets it read the site and “Disallow: /” refuses it.

A group that names a crawler replaces the * group for that crawler; it does not add to it. Paths the * group closes are open to a crawler with its own group unless they are repeated there.

The robots.txt standard (RFC 9309) defines a crawler’s name as letters, hyphens and underscores. “Poseidon Research Crawler” contains a space, so how a rule under it is matched is up to the crawler.

Refuse Poseidon Research Crawler:

User-agent: Poseidon Research Crawler
Disallow: /

Allow Poseidon Research Crawler:

User-agent: Poseidon Research Crawler
Allow: /

Where the rule for Poseidon Research Crawler goes, platform by platform

Questions

What is Poseidon Research Crawler?

Poseidon Research Crawler is a crawler run by Poseidon Research. It reads pages ahead of time, to train a model or to build an index.

Who runs Poseidon Research Crawler?

Poseidon Research. It is the only name Citable recognises for Poseidon Research.

How do I allow or block Poseidon Research Crawler in robots.txt?

Add a group under its name, “User-agent: Poseidon Research Crawler”. “Allow: /” lets it read the site and “Disallow: /” refuses it. A group that names a crawler replaces the * group for that crawler; it does not add to it. Paths the * group closes are open to a crawler with its own group unless they are repeated there.

Should I block Poseidon Research Crawler?

Poseidon Research Crawler reads ahead of time. Refusing it keeps your pages out of what Poseidon Research collects them for. It does not change how Google or Bing rank you: search crawlers go by other names, with rules of their own.

How do I see Poseidon Research Crawler in my server logs?

In an access log Poseidon Research Crawler appears as a user agent containing “Poseidon Research Crawler”.

How do I know a request is really Poseidon Research Crawler?

Citable holds no published address list for Poseidon Research, so a read that claims to be Poseidon Research Crawler is recorded as unknown rather than verified. A user agent is a claim, and anyone can send it.

About Citable

Citable strips the UI from a website for AI agents and serves them only the content.

When an AI agent — ChatGPT, Claude, Perplexity or any of the 81 that Citable recognises — opens a page, Citable removes the theme, scripts, navigation and layout and serves only the content: the same facts, at the same URL, on the site's own domain. People and Google still get the full designed page.

How it works: https://getcitable.in/how-it-works · Summary for AI agents: https://getcitable.in/llms.txt


Source: https://getcitable.in/crawlers/poseidon-research-crawler · Citable · Run the free audit · llms.txt · getcitable@gmail.com