AuthSystem
The plugin allows secure player login and registration on a Minecraft server, protecting accounts from unauthorized access.
⬇ Download on Modrinth[⚠️]NOTE! If u have aby issue with the plugin please report to in our discord!
AuthSystem is a lightweight and secure player authentication plugin for Minecraft 1.21 (Paper/Spigot). Features:
/register – Create an account (first time only). /login or /l – Log in after joining. /changepassword – Change your password.
Admin commands (/verify – requires verify.admin permission):
/verify reload – Reload player data. /verify reset – Delete player's account (forces re-registration). /verify changepass – Force-set a new password.
Protection: Unlogged players cannot:
Chat: Use commands (except auth commands) Break/place blocks Interact with blocks Stay longer than 2 minutes (auto-kick)
Security:
Passwords are hashed with SHA-256 + unique random salt (never stored in plain text). Data saved in plugins/AuthSystem/players.yml.
Simple, fast, secure – perfect for survival or small servers that need basic login protection without heavy plugins.
- Edition: Minecraft Java
- File type: .jar
- Minecraft versions listed: 1.21, 1.21.1, 1.21.2
- 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 Modrinth — 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.
- Ships as AuthSystem-1.0.jar — drop this file into the mods folder
- Download size: 12 KB
- Download link checked 9 Sept 2026 — working
These come from our own check of the pack file, not from the source page.