Training crawlers
Cotoyogi is a bot operated by ROIS that collects pages used to train AI models. Scrapes data for AI training in Japanese language. It is documented as honouring robots.txt, but no IP range list or reverse-DNS convention is published, so a request carrying this user agent cannot be proven genuine.
Request says
"Cotoyogi"
Checked against
Nothing published
Live check
No operator check exists for Cotoyogi. This still shows what the address really is.
Reference
| User agent | CotoyogiToken only: match on the substring. |
|---|---|
| Operator | ROIS |
| Purpose | AI LLM Scraper. |
| Respects robots.txt | Honours |
| Verification method | Claim onlyNone 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 | Not published |
| Robots.txt tokens | Cotoyogi |
| Operator documentation | None published |
Scrapes data for AI training in Japanese language.
robots.txt
Paste one at the root of your domain. Rules are per token.
User-agent: Cotoyogi
Disallow: /User-agent: Cotoyogi
Allow: /User-agent: Cotoyogi
Allow: /
Disallow: /account/
Disallow: /checkout/
Disallow: /searchEdit the Disallow paths to match your own URLs.
Blocking Cotoyogi keeps your pages out of the next training run. It does not remove anything already collected, and it has no effect on how the site ranks in ordinary search.
Build a file for every crawlerFAQ
Cotoyogi is a bot operated by ROIS that collects pages used to train AI models. Scrapes data for AI training in Japanese language. It is documented as honouring robots.txt, but no IP range list or reverse-DNS convention is published, so a request carrying this user agent cannot be proven genuine.
Yes. The operator documents that Cotoyogi reads robots.txt and follows Disallow rules for its own token. Rules take effect on the next fetch of the file, which can be hours or days after you publish them.
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.
Add the Cotoyogi 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.
Blocking Cotoyogi keeps your pages out of the next training run. It does not remove anything already collected, and it has no effect on how the site ranks in ordinary search.