Getting Started

Requirements

• Minecraft 1.21.1
• NeoForge 21.1.235 or newer
• Java 21 (bundled with the Minecraft launcher on 1.21.1)

Installing

1. Install NeoForge 21.1.235+ for Minecraft 1.21.1.
2. Download alertmod-1.0.0.jar from the Releases page, or build it yourself — see For Developers.
3. Drop the .jar into your instance's mods folder.
4. The mod must be installed on both the server and the client to work — it uses its own network packets to send alerts.

Sending your first alert

1. In-game, run:

   /alert
   

   You need permission level 2 (operator) by default.
2. A screen opens. Type your message, pick a color, choose whether it plays a sound, set how long it stays on screen, and pick which online players should see it (or leave everyone selected).
3. Click Send Alert. Every targeted player sees a bordered banner appear in the center of their screen, with the siren sound if you left it on.

See Commands for the full breakdown of the screen, and FAQ if something doesn't work as expected.