Hermes Plugin by Humalike is an open-source plugin that gives Hermes Agent bots human-like social behavior across messaging platforms. It adds four core capabilities: turn-taking so the bot knows when to speak or stay silent, persona generation to create fully-voiced characters, theory of mind to anticipate how messages will land, and social learning to adapt to a group's tone and slang. It integrates with Telegram, Slack, WhatsApp, and Discord in a single install command.