What is Cotoyogi?
Direct Answer: Cotoyogi is a bot operated by the Research Organization of Information and Systems for AI training purposes.
The Cotoyogi bot is part of a framework aimed at promoting data utilization and research and development of AI technology in Japan. It provides a centralized management environment for content and models. The bot's user-agent is 'Mozilla/5.0 (compatible; Cotoyogi/4.0; +https://ds.rois.ac.jp/center8/crawler/)'.
User-Agent Identification
The following user-agent strings identify Cotoyogi in your live traffic data:
Mozilla/5.0 (compatible; Cotoyogi/4.0; +https://ds.rois.ac.jp/center8/crawler/)
robots.txt Rules for Cotoyogi
Respects robots.txt: Yes
Use the following robots.txt rules to control Cotoyogi access:
# Block Cotoyogi
User-agent: Cotoyogi/4.0
Disallow: /
# Allow Cotoyogi
User-agent: Cotoyogi/4.0
Allow: /Robots.txt is a directive, not a barrier
Research Organization of Information and Systems states that Cotoyogi respects robots.txt. However, configuration mistakes, caching delays, and edge cases mean your directives may not always be followed as expected. Live traffic verification confirms whether Cotoyogi actually obeys your rules in practice.
Need continuous verification across 500+ bots? Can AI See It automates this.
Crawl Behavior
Frequency:Not Documented
Request Pattern:Not Documented
Crawl Activity Index
Relative crawl activity for Cotoyogi over the past 28 days. Higher values indicate increased crawling intensity compared to the period baseline.
View recent activity data (last 7 days)
| Date | Activity Index |
|---|---|
| Mar 26, 2026 | 0.0 |
| Mar 27, 2026 | 0.0 |
| Mar 28, 2026 | 0.0 |
| Mar 29, 2026 | 0.0 |
| Mar 30, 2026 | 0.0 |
| Mar 31, 2026 | 0.0 |
| Apr 1, 2026 | 0.0 |
Source: Cloudflare Radar
Why track Cotoyogi traffic?
Measure what Research Organization of Information and Systems gives back. Cotoyogi takes your content for AI training — but does Research Organization of Information and Systems send any traffic in return through other products? Track whether the trade-off is worth it before deciding to block.
Understand what content is being collected for AI training. Cotoyogi crawls your site to gather data that may train AI models. Tracking its activity reveals which pages are selected — and which are skipped.
Make an informed block-or-allow decision. Blocking Cotoyogi prevents your content from being used in future model training. But first, measure the volume: how many pages does it fetch, how often, and does Research Organization of Information and Systems send any referral traffic through other products?
Detect content harvesting patterns. If Cotoyogi is systematically crawling your highest-value content (product pages, proprietary research, premium articles), you may want to restrict access using robots.txt or server-side rules.
What does Cotoyogi crawling actually cost you?
AI training bots like Cotoyogi collect your content to improve future AI models. Unlike AI search bots, there's no direct referral pipeline — Cotoyogi doesn't cite sources or send traffic back to your site.
What you give
- Server resources for every crawl request
- Your content, expertise, and original research
- Data that improves a competing AI product
What you get back
- No direct referral traffic from Cotoyogi
- No attribution in AI model outputs
- No revenue share from model usage
This doesn't automatically mean you should block Cotoyogi. But you need to measure the real cost before deciding. Research Organization of Information and Systems may send traffic through other products (Research Organization of Information and Systems's AI products) — blocking the training bot might not affect referrals at all, or it might. Only log data tells you.
What Can AI See It measures for AI training bots
How many pages Cotoyogi fetches from your site
Which pages and sections Cotoyogi prioritizes
Do Research Organization of Information and Systems's OTHER products send you traffic?
Does Cotoyogi actually respect your robots.txt?
How is this different from prompt testing tools? Prompt testing checks if AI mentions your brand in simulated queries. Can AI See It measures what actually happens: real crawls, real referrals, real conversions — from your live traffic data.
Read: Why live traffic monitoring beats prompt testing →Log Verification
To verify Cotoyogi traffic in your live traffic data:
- Search access logs for the user-agent strings listed above
- Check if the IP addresses match documented ranges (if provided by Research Organization of Information and Systems)
- Verify the crawl pattern matches documented behavior
- Use reverse DNS lookup for additional verification if available
Note: Observed behavior in production environments may differ from official documentation. Live traffic monitoring provides the only reliable verification of actual bot behavior.
Undocumented Information
The following information is not officially documented for Cotoyogi:
- crawl frequency
- request pattern
- IP verification method
- JavaScript rendering details
Measure your Crawl-to-Referral Ratio for Cotoyogi
See how much traffic Research Organization of Information and Systems actually sends back to your site relative to how much content Cotoyogi takes.
- Connect Cotoyogi crawls in your logs with referral sessions in analytics
- Calculate your CRR — the metric prompt testing tools can't provide
- Make data-driven block/allow decisions for every AI bot
Measure business impact from Cotoyogi
The question isn't just whether to block Cotoyogi — it's what you lose or gain from its crawling activity.
- Crawl volume: how many pages Cotoyogi collects from your site
- Content value: which content categories are targeted most
- Cross-platform CRR: does Research Organization of Information and Systems send traffic through other products?
- Referral tracking: Cotoyogi takes — measure what Research Organization of Information and Systems gives back. Track actual visits arriving from Research Organization of Information and Systems's products to your site.
Based on your live traffic data and analytics — not synthetic prompt tests.
Official Documentation
View Official Cotoyogi Documentation →
Information sourced from official documentation. Content generated with AI assistance.