Poseidon Research Crawler
Operated by Poseidon Research
Quick Facts
- User-Agent:
- Poseidon Research Crawler
- Category:
- Scrapers
- Operator:
- Poseidon Research
- Safety:
- Safe
- Blocking Impact:
- Low - No SEO ranking impact
- SEO Impact Score:
- 2/10
- Official docs:
- None published by Poseidon Research
Reported, not operator documented
Poseidon Research has not published a crawler page that names Poseidon Research Crawler. It is listed here on our own evidence. Verified by AI Crawler Check: 46 of the 5,583 valid robots.txt files in the Tranco top 10,000 carry a rule for Poseidon Research Crawler, so site owners treat it as a real crawler name (how we measure this). That proves the spelling is in use, not who sends it. Reported crawler. No vendor page.
What that means for you: the Poseidon Research Crawler rule on this page is the best available spelling, but Poseidon Research has made no statement of purpose, crawl rate or robots.txt compliance. Treat a Poseidon Research Crawler request in your logs as a clue, not proof of who sent it, and add a firewall rule if that traffic matters to you. If the operator publishes documentation, this profile moves to Official docs.
What is Poseidon Research Crawler?
Poseidon Research Crawler is a developer-facing extraction agent operated by Poseidon Research. It fetches and structures web content on behalf of applications and AI agents built on Poseidon Research's platform. Traffic volume depends on how third-party developers configure it, so monitor your logs if you see heavy activity.
Poseidon Research Crawler is a developer-facing extraction agent operated by Poseidon Research. It fetches and structures web content on behalf of applications and AI agents built on Poseidon Research's platform. Traffic volume depends on how third-party developers configure it, so monitor your logs if you see heavy activity.
Poseidon Research Crawler uses the user-agent token Poseidon Research Crawler. You can control it via robots.txt, meta tags (noai), or the emerging llms.txt standard. Robots.txt is voluntary; for hard enforcement, combine it with server-level IP blocking.
What happens if you block Poseidon Research Crawler?
User-agent / Disallow: / without any SEO penalty.How to block Poseidon Research Crawler with robots.txt
<code>User-agent: Poseidon Research Crawler</code> - Matching is case-insensitive. Robots.txt is fetched from the root of each subdomain separately.
Is Poseidon Research Crawler safe to allow?
What does Poseidon Research Crawler do?
Understanding Poseidon Research Crawler's purpose helps you decide whether to allow or block it.
- Extracts and structures web content for developer applications
- Powers AI agents built on the operator platform
- Volume depends on third-party developer configuration
- Monitor logs if you notice heavy activity
- Can be rate-limited via robots.txt or server rules
Poseidon Research Crawler in context
Poseidon Research Crawler is a utility crawler operated by Poseidon Research. In plain terms, it harvests pages for a dataset or data product. Our database files it under data scrapers and ranks it Tier 6, the lowest priority: scrapers and tools that offer most sites little or nothing. 37 of the 39 data scrapers in our database share this tier.
Its safety rating is safe and its blocking impact is low. So the decision about Poseidon Research Crawler rests on what you want from Poseidon Research, not on its behaviour. How we rate safety and impact.
How site owners treat Poseidon Research Crawler
In our own scan of the Tranco top 10,000 (5,583 valid robots.txt files), 46 files (0.8%) name Poseidon Research Crawler in a User-agent line. That shows site owners treat the token as a real crawler worth a rule. It does not, on its own, prove who operates it.
Does it follow robots.txt?
Poseidon Research Crawler's operator does not clearly document how it treats robots.txt. Write the Poseidon Research Crawler rule anyway, then confirm in your logs that its requests stop.
Poseidon Research crawlers and close alternatives
Poseidon Research runs only this one crawler in our database, so a single User-agent: Poseidon Research Crawler group controls everything Poseidon Research fetches through it.
Other data scrapers that do the same job (harvests pages for a dataset or data product) include Amazon Kendra from Amazon, ApifyBot from Apify, Barkrowler from Babbar, BLEXBot from WebMeUp, coccocbot-web from Unknown, Crawl4AI from Unknown. Deciding about Poseidon Research Crawler is usually a decision about the whole group, so check how your file treats these too.
We first recorded Poseidon Research Crawler on March 17, 2026. We could not find a page where Poseidon Research names it, so treat the token as reported rather than documented.
Which rule Poseidon Research Crawler actually follows
Poseidon Research Crawler reads exactly one group in robots.txt, the most specific one that names Poseidon Research Crawler, and never combines rules across groups. This short file shows the trap:
User-agent: *
Disallow: /private/
User-agent: Poseidon Research Crawler
Disallow: /drafts/- Find the group. Poseidon Research Crawler looks for a group naming
Poseidon Research Crawler. One exists, so it ignoresUser-agent: *completely. - Apply only that group. It is refused
/drafts/and nothing else. - The surprise.
/private/is open to Poseidon Research Crawler, because that rule lives in the*group it no longer reads. To keep it out of both, repeatDisallow: /private/inside its own group.
Test yourself: does a rule under User-agent: * apply to Poseidon Research Crawler if the file also has a User-agent: Poseidon Research Crawler group?
No. Once a group names it, Poseidon Research Crawler reads only that group. Put every rule you want it to follow inside its own group.
Test yourself: will blocking Poseidon Research Crawler remove your pages from AI answers?
Often, yes. Poseidon Research Crawler is a utility crawler, so pages it cannot fetch can drop out of the answers or results it supports.
Test yourself: is User-agent: poseidon research crawler the same as User-agent: Poseidon Research Crawler?
Yes. RFC 9309 makes user-agent matching case-insensitive. Paths are a different story: Disallow: /Blog/ does not block /blog/.
Should you allow Poseidon Research Crawler? Decide by situation
| If you are... | Recommended setting |
|---|---|
| You publish content and want AI answers to cite it | Low stakes either way. It does not decide whether AI answers cite you. |
| You license content and want to stop AI training | Blocking it does not stop training, because Poseidon Research Crawler is a utility crawler. Block the operator's training crawler instead. |
| You run an online shop | Consider blocking it, especially on price and stock pages that competitors scrape. |
| Your server is under load from bots | Rate-limit before blocking. It is rated safe in our database. |
Check Poseidon Research Crawler on your own site
- Open
/robots.txton your domain and search forPoseidon Research Crawler. If it is not named, it followsUser-agent: *. - List the
Disallowlines in the group Poseidon Research Crawler follows and test your key URLs against them; the longest match wins, andAllowwins a tie. - Look beyond the file. A firewall or bot manager can refuse Poseidon Research Crawler even when robots.txt allows it, and that never shows in the file.
- Run our website crawlability test to see how Poseidon Research Crawler and every other crawler we track are treated in one pass, including firewall refusals.
Common mistakes with Poseidon Research Crawler
The errors we see most often with Poseidon Research Crawler in the files and firewalls we test:
- Treating Poseidon Research Crawler as an AI or search crawler. Blocking it has little effect on visibility; decide based on load and what it does with your data.
- Relying on robots.txt alone when Poseidon Research Crawler is rated caution or aggressive. Back the rule with a server-side block.
- Blocking Poseidon Research Crawler by IP alone. Ranges change; match the token and verify with logs.
All three hide inside a file that looks correct, so check Poseidon Research Crawler from outside after every change.
Spotting Poseidon Research Crawler in your logs
robots.txt says what Poseidon Research Crawler may do; your access logs show what it actually did.
Count requests
On a server with standard Nginx or Apache logs, this counts matching requests per day (adjust the log path for your host):
grep -iE "Poseidon Research Crawler" /var/log/nginx/access.log \
| awk '{print $4}' | cut -d: -f1 | sort | uniq -cAnd this shows which paths it requested most, which is the quickest way to see whether your Disallow lines are being respected:
grep -iE "Poseidon Research Crawler" /var/log/nginx/access.log \
| awk '{print $7}' | sort | uniq -c | sort -rn | head -20Check the requests are genuine
Anyone can send the Poseidon Research Crawler user-agent, so confirm the source before acting on a match:
Poseidon Research Crawler: we hold no published IP list, so use reverse DNS where the operator documents a hostname and treat an unverifiable Poseidon Research Crawler request with caution.
Frequently Asked Questions
What user-agent string does Poseidon Research Crawler use?
Poseidon Research Crawler. Evidence that the spelling is in real use comes from our own robots.txt study: 46 of the 5,583 valid robots.txt files in the Tranco top 10,000 name it (fetched October 20, 2026), not from Poseidon Research, which has not published crawler documentation naming it. Use it in robots.txt as the best available match, and treat a request carrying it as a clue rather than proof of who sent it.Is Poseidon Research Crawler safe?
Will blocking Poseidon Research Crawler hurt my SEO?
User-agent / Disallow: / without any SEO penalty.How do I block Poseidon Research Crawler in robots.txt?
/robots.txt file:User-agent: Poseidon Research Crawler Disallow: /
This instructs Poseidon Research Crawler not to crawl any path on your site. To block only specific sections, replace / with the path (e.g.,
Disallow: /blog/).Does Poseidon Research Crawler respect robots.txt?
Poseidon Research Crawler will stop a client that chooses to honour it; for enforcement, add a firewall or CDN rule as well.How do I verify if Poseidon Research Crawler is crawling my site?
Poseidon Research Crawler (for example grep -i "Poseidon Research Crawler" /var/log/nginx/access.log). Because the operator publishes no IP ranges or reverse-DNS pattern, a match shows that something used the name, not that Poseidon Research sent it.