zailthauth
A lightweight authentication plugin for Paper servers with Java login, Bedrock auto-login, persistent sessions, and SQLite storage.
⬇ Download on Modrinth
ZailthAuth
A lightweight authentication plugin for Paper servers, designed to provide secure and simple player authentication with native Bedrock support through Floodgate.
Features
- 🔐 Java Edition registration and login
- 📱 Bedrock Edition auto-login
- 💾 SQLite database
- 🔒 Secure PBKDF2 password hashing
- ⏱️ Persistent login sessions
- 🛡️ Protection before authentication
- ⚙️ Configurable session duration
- 👑 Admin account reset command
Commands
Player Commands
/register <password> <password>
Register a new Java Edition account.
/login <password>
Log into an existing Java Edition account.
Admin Commands
/auth reset <player>
Reset a player's authentication account.
Permissions
zailthauth.admin
Required to use /auth administration commands.
Default: Operator
Bedrock Support
ZailthAuth automatically detects players connected through Floodgate.
Bedrock players:
- Do not need to register.
- Do not need to log in.
- Can enter the server immediately.
Java Edition players continue to use the normal registration and login system.
Sessions
ZailthAuth supports persistent authentication sessions.
The default configuration keeps a player's session active for approximately 30 days.
Session duration can be configured in config.yml.
Requirements
- Paper 1.21.11
- Java 21
- Floodgate
Configuration
The plugin uses a simple YAML configuration file:
session:
enabled: true
duration-minutes: 43800
- 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 ZailthAuth-1.0.0.jar — drop this file into the mods folder
- Download size: 13.7 MB
- Download link checked 2 Oct 2026 — working
These come from our own check of the pack file, not from the source page.