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Cotoyogi

GoodBotVerifiedBOT

By providing a centralized management environment for content and models, we will build a framework that promotes both data utilization and research and development of AI technology, and realize the following functions as Japan's future information infrastructure. Operated by Research Organization of Information and Systems.

GoodBot
Assessment
AI Crawler
Category
BOT
Kind
1
Data sources
AI-generated summary, drawn from Cloudflare, operator docs, and community data

What is Cotoyogi?

Cotoyogi is a web crawler operated by Research Organization of Information and Systems. By providing a centralized management environment for content and models, we will build a framework that promotes both data utilization and research and development of AI technology, and realize the following functions as Japan's future information infrastructure. It is part of the growing wave of AI-powered crawlers that collect web data for training and improving AI models.

Helpful — Verified, safe crawler. Respects robots.txt and provides operator documentation.

Identification

Bot name
Cotoyogi
Operator
Research Organization of Information and Systems
Category
AI Crawler
Kind
BOT
Verification
Verified bot
Cloudflare slug
cotoyogi
User-agent patterns
Cotoyogi/
User-agent string
Mozilla/5.0 (compatible; Cotoyogi/4.0; +https://ds.rois.ac.jp/center8/crawler/)
Main use cases
AI model training data collectionContent analysisWeb data extraction

Why it crawls your site

Cotoyogi crawls websites to collect and process web content for AI model training and improvement. It is operated by Research Organization of Information and Systems as part of their AI and machine learning infrastructure. If you see this bot in your server logs, it is a verified crawler and generally safe.

Block or allow Cotoyogi

Block it

Add a Disallow rule for Cotoyogi/ in your robots.txt file. You can also block at the server level using your web server configuration or CDN firewall rules to filter requests matching the user-agent string.

# Block Cotoyogi from crawling your entire site
User-agent: Cotoyogi/
Disallow: /

# Allow Cotoyogi full access
User-agent: Cotoyogi/
Allow: /
Allow & verify

Ensure your robots.txt allows Cotoyogi/. Verify requests are genuine by checking the user-agent string and referring to Research Organization of Information and Systems's documentation.

Traffic & trends

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Data sources

This profile is compiled from the following sources.

CloudflareRadar
Last updated July 26, 2026