Offline Whitelist is a server-side mod designed specifically for servers running with online-mode=false. It validates players by nickname, ensuring that only approved users can access your server. Because it operates entirely server-side, it requires no client installation and works seamlessly with vanilla clients. The mod intercepts connections early, preventing undesirable players from entering the server.

Supported Languages

Features

Offline-Mode Support: Validates players purely by their username, making it perfect for cracked/offline servers.
Seamless Connection Blocking: Disconnects players during the connection phase before they spawn, leaving no trace in the server chat.
Localized Kick Messages: Automatically detects the player's client language and displays the kick reason accordingly (e.g., English clients get English text, Russian clients get Russian). You can add unlimited custom languages in the config file config/offlinewhitelist.json .
Operator Bypass: An optional setting (enabled by default) that allows server operators to join the server even if they are not explicitly added to the whitelist.
Clean File Structure: All player lists and configuration files are neatly organized in the config/ directory as simple, editable JSON files.

Commands

All commands require Operator permission. You can use either /offwhitelist or the shorter alias /owh.

/owh add — Adds a player to the whitelist.
/owh remove — Removes a player from the whitelist.
/owh getall — Lists all players currently in the whitelist.
/owh on — Enables the whitelist.
/owh off — Disables the whitelist.
/owh opbypass on — Allows operators to bypass the whitelist.
/owh opbypass off — Requires operators to be in the whitelist to join.
/owh status — Shows the current whitelist status.
/owh reload — Reloads the whitelist players and configuration messages.

Offline Whitelist — Nickname-Based Whitelist