This is a simple Minecraft plugin that allows players to whitelist themselves via the YEPPBot.
The plugin is written in Java 8 and uses the Spigot API to let your YEPPBot interact with your Minecraft server.
That way you can easily manage your whitelist and let players join your server via your Twitch Chat without having to manually whitelist them.

The plugin is written in Java 8 so it should work with all Minecraft Spigot versions from 1.13 and up.
It is thought only tested with Minecraft Spigot 1.21.1.
The YEPPBot needs to be at least at version 1.21.4 to work with this plugin.