Safe Official docs Scrapers

Cotoyogi (ROIS-DS)

Operated by ROIS-DS

Quick Facts

User-Agent:
Cotoyogi
Category:
Scrapers
Operator:
ROIS-DS
Safety:
Safe
Blocking Impact:
Low - No SEO ranking impact
SEO Impact Score:
2/10
Official docs:
ds.rois.ac.jp

Confirmed by the operator

ROIS-DS names Cotoyogi on its own documentation page, linked above. The token, purpose and robots.txt behaviour on this profile come from that page, re-checked on September 22, 2026.

What is Cotoyogi (ROIS-DS)?

Cotoyogi (ROIS-DS) is an AI data-collection crawler operated by ROIS-DS. It gathers public web content to build or refine training datasets for large language models. Like other AI training crawlers, Cotoyogi (ROIS-DS) does not influence your search-engine rankings, so you can block it via robots.txt without any SEO penalty if you wish to opt out of AI training.

Cotoyogi (ROIS-DS) is an AI data-collection crawler operated by ROIS-DS. It gathers public web content to build or refine training datasets for large language models. Like other AI training crawlers, Cotoyogi (ROIS-DS) does not influence your search-engine rankings, so you can block it via robots.txt without any SEO penalty if you wish to opt out of AI training.
Cotoyogi (ROIS-DS) uses the user-agent token Cotoyogi. 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 Cotoyogi (ROIS-DS)?

✅ No SEO Impact - Blocking Cotoyogi (ROIS-DS) does not affect your rankings in Google, Bing, or any other search engine. Cotoyogi (ROIS-DS) is an AI crawler, not a traditional search indexer. You can freely block it via User-agent / Disallow: / without any SEO penalty.
Generally safe to allow; provides legitimate crawling value.

How to block Cotoyogi (ROIS-DS) with robots.txt

<code>User-agent: Cotoyogi</code> - Matching is case-insensitive. Robots.txt is fetched from the root of each subdomain separately.

Block completely (robots.txt)
User-agent: Cotoyogi Disallow: /
Allow all (robots.txt)
User-agent: Cotoyogi Allow: /
Block private only (robots.txt)
User-agent: Cotoyogi Disallow: /private/ Disallow: /api/ Disallow: /admin/ Allow: /
Nginx server block
# Nginx: Hard-block Cotoyogi (ROIS-DS) if ($http_user_agent ~* "Cotoyogi") { return 403 "Bot blocked"; }
Apache .htaccess
# Apache: Hard-block Cotoyogi (ROIS-DS) SetEnvIfNoCase User-Agent "Cotoyogi" bad_bot Order Allow,Deny Allow from all Deny from env=bad_bot
Meta robots tag
<meta name="robots" content="noindex, nofollow">
X-Robots-Tag header
X-Robots-Tag: noindex, nofollow

Is Cotoyogi (ROIS-DS) safe to allow?

Yes, Cotoyogi (ROIS-DS) is a safe and legitimate crawler operated by ROIS-DS. It follows the Robots Exclusion Protocol (RFC 9309) and can be controlled with standard robots.txt rules.
Verify by reverse-DNS lookup: legitimate Cotoyogi (ROIS-DS) requests resolve to ROIS-DS's domain.

What does Cotoyogi (ROIS-DS) do?

Understanding Cotoyogi (ROIS-DS)'s purpose helps you decide whether to allow or block it.

  • Collects public web content to train large language models
  • Builds and refreshes AI training datasets
  • Harvests text, code, and structured data for model improvement
  • Does NOT affect search-engine rankings
  • Can be blocked to opt out of AI training without SEO loss

Frequently Asked Questions

What is the official user-agent string for Cotoyogi (ROIS-DS)?
The official user-agent string for Cotoyogi (ROIS-DS) is: Cotoyogi. Use this exact string in robots.txt, Nginx, Apache, or Cloudflare firewall rules to target this bot. Matching in robots.txt is case-insensitive. Verify a request genuinely comes from Cotoyogi (ROIS-DS) by performing a reverse-DNS lookup on the source IP.
Is Cotoyogi (ROIS-DS) safe?
Yes, Cotoyogi (ROIS-DS) is a safe and legitimate crawler operated by ROIS-DS. It follows the Robots Exclusion Protocol (RFC 9309) and can be controlled with standard robots.txt rules.
Will blocking Cotoyogi (ROIS-DS) hurt my SEO?
✅ No SEO Impact - Blocking Cotoyogi (ROIS-DS) does not affect your rankings in Google, Bing, or any other search engine. Cotoyogi (ROIS-DS) is an AI crawler, not a traditional search indexer. You can freely block it via User-agent / Disallow: / without any SEO penalty.
How do I block Cotoyogi (ROIS-DS) in robots.txt?
Add the following lines to your /robots.txt file:
User-agent: Cotoyogi
Disallow: /

This instructs Cotoyogi (ROIS-DS) not to crawl any path on your site. To block only specific sections, replace / with the path (e.g., Disallow: /blog/).
Does Cotoyogi (ROIS-DS) respect robots.txt?
Cotoyogi (ROIS-DS) is operated by ROIS-DS and is expected to fetch and parse /robots.txt before crawling, following RFC 9309. For hard enforcement, combine robots.txt with server-level IP or user-agent blocking.
How do I verify if Cotoyogi (ROIS-DS) is crawling my site?
Search your web server access logs for the string Cotoyogi (case-insensitive: grep -i "Cotoyogi" /var/log/nginx/access.log). Filter by user-agent in your log analytics tool (GoAccess, AWStats, etc.).

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