If you need a robots.txt, you're doing it wrong. Set the ACLs on your buckets and files so that they're not readable or listable by anyone but you. There's no

If you need a robots.txt, you're doing it wrong. Set the ACLs on your buckets and files so that they're not readable or listable by anyone but you. There's no reason to depend on obscurity to protect your data when you can easily secure it using ACLs.