Built this page with a robots.txt analyzer; it attributes a score. Here is the dev-null.sh result.
https://robots.leopoletto.dev/score/dev-null.sh/9829720aee1cee3d3209d432122527b3
robots.txt Validatordev-null.sh robots.txt scores 80/100, grade BSee the rules, crawlers, sitemaps and audit findings in the robots.txt of dev-null.sh.