Auth (Fabric/Forge/NeoForge/Quilt)
Java mod listed for Minecraft 1.21. Download on the author's site.
⬇ Download on CurseForge

Auth

📖 Description
This mod adds a secure authentication system to your server. It allows players to register and logging using a numeric password, ensuring that only authorized users can access their accounts. This is especially useful for offline servers, preventing unauthorized access and account stealing.
⚠️ Warning
In vanilla we cannot use /kick, so I use many particles to kick (game crash) a malicious player, but you can disable it by disabling kick in /function auth:settings.
👾 Bugs/Issues
Please report any bug/issues to the Discord Server.
⌨️ Commands
Player
Register with:
/trigger register set <password>
Login with:
/trigger login set <your password>
Change password with (need to be logged):
/trigger change_password set <new password>
Admin
Reset player:
/execute as <player> run function auth:auth/reset
Reset all player:
/function auth:auth/reset_all_players
Show/get player password:
/gamerule sendCommandFeedback true
/scoreboard players get <player> register
/gamerule sendCommandFeedback false
Disable:
/function auth:disable
Enable:
/datapack enable "file/auth.zip"
Settings
To see the settings menu use the command:
/function auth:settings
Bypass
To give a authentication bypass to a player use the command:
/tag <player> add auth.bypass
and to remove it, use:
/tag <player> remove auth.bypass
🪪 License
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- Edition: Minecraft Java
- File type: .jar
- Minecraft versions listed: 1.21.11, 1.21.5, 1.21.8
- How to install: Install the matching mod loader (Forge, Fabric or NeoForge) for your Minecraft version. → Download the .jar. → Put it in the .minecraft/mods folder and launch that loader profile.
- Where to get it: Opens on CurseForge — not every file is mirrored on our own servers.
Install steps are the general flow for this file type — How to install Minecraft Java mods & modpacks walks through it step by step.
Auth (Fabric/Forge/NeoForge/Quilt) is a free Minecraft Java mod. Compatible with Minecraft 1.21.11, 1.21.5, 1.21.8, 1.21.7 and newer. Downloaded 11,189 times (via CurseForge). Download it and open it directly in the game.