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Auth (Fabric/Forge/NeoForge/Quilt)

Login and Register Authorization
by lullaby6
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9,675 downloads
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Updated Jul 6, 2026
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Server Utility

Auth

Discord Modrinth License

   

📖 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

Limited Embed License v1.0

   

🎁 Server Hosting

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Server Hosting

auth-v1.6.2-1.21.11.jar
MC Fabric, Forge, NeoForge, Server, Quilt, 1.21.11, 26.1, 26.1.1, 26.1.2, 26.2
Release 2025-12-10 Get

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