Nutch

Scraper / HTTP Client Unknown / community maintained robots.txt behaviour unknown

Apache Nutch open-source web crawler framework

User-Agent

Mozilla/5.0 (Windows NT 10.0; Win64; x64) AppleWebKit/605.1.16 (KHTML, like Gecko; compatible; Friendly_Crawler/2.0) Chrome/120.0.6099.217 Safari/605.1.15/Nutch-1.20-SNAPSHOT

Allow Nutch in robots.txt

User-agent: Nutch
Allow: /

Block Nutch in robots.txt

User-agent: Nutch
Disallow: /

Blocking affects this tool's ability to access your site for its stated purpose.

Official documentation: https://github.com/monperrus/crawler-user-agents

Check your site's bot access

Free dual-engine check: robots.txt verdicts for all 222 bots plus live User-Agent probes. Finds WAF blocks your robots.txt doesn't show.