Getting Started

Prerequisites

Before you begin, make sure you have:

Java installed — use the same version your Minecraft server JAR requires
Your Minecraft server .jar file present in the directory you'll run YggUtils from
A Yggdrasil-compatible authentication server URL

Installation

Download the latest YggUtils.jar from the GitHub releases page and place it in the same directory as your server JAR.

Your folder should look like this:

/server
├── YggUtils.jar
├── server.jar
├── server.properties
└── ...

Setup

Generate the config

Run YggUtils once. Since no config exists yet, it will generate YggUtils.yml and exit immediately.

java -jar YggUtils.jar

You'll see:

[YggUtils] No configuration found. A default config has been generated: YggUtils.yml
[YggUtils] Please fill in 'authserver' and 'serverfile' before running again.

Edit the config

Open YggUtils.yml and fill in both fields:

authserver: https://your.auth.server
serverfile: server.jar

Field	Description
`authserver`	Root URL of your Yggdrasil-compatible authentication server
`serverfile`	Filename of your Minecraft server JAR, relative to the working directory

Start the server

Run YggUtils again. It will silently launch your server with authlib-injector attached.

java -jar YggUtils.jar

All server output passes through to your console exactly as normal.

Warning

If either authserver or serverfile is left unchanged in the config, YggUtils will print a warning and exit without starting the server.