This API endpoint checks if a password can be found in the lists that contains the most common used passwords in the net. If a password can be found in any list, it means the password is not a good candidate for security reasons.
Moocher.io is a set of lists like IP, domains, emails, passwords, creditcard BIN/IIN. Some of them marked as 'abusers' by several groups and initiatives of users and communities, and others used to filter out potential abusers.
Moocher.io can be defined as a Look up as a Service for developers and product companies that want to know in realtime if their existing or potential users have been classified as 'abusers' by one or more of these lists.