The AutoModerator (also called AutoMod) is a customizable moderation bot—designed to assist human Moderator (reddit) moderators—which monitors submissions to and comments on subreddits; acting on them as needed. Rules enforced by the AutoModerator are created and managed by the moderators of each subreddit. [1]

Contexts

[1] Automoderator, reddit.com
#reddit-lexicon (See: Reddit Glossary)