ModsJava
BuildNotifier
Java mod listed for Minecraft 1.21. Downloads from the MC Java Mods app on Android.
I don't know my version or loader
Open the Minecraft launcher and look at the profile you play on — it names both, like fabric-loader-1.21.4. The version also shows in the bottom-right corner of the game's main menu.
No loader in the profile name? Then it's plain Minecraft, and these mods won't run — you need Fabric or NeoForge installed first.
BuildNotifier
Automatically check for Paper/Velocity updates on server start up. This does NOT download versions for you.
Features
- Logs to console on startup if there are any new versions.
- Anyone who is OP or has
buildnotifier.messagewill receive a message in game on join if there's a new version.
License
This plugin is released under GNU General Public License v3. See LICENSE.
Quick facts
- 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.
File checked by MCModsHub
- Ships as buildnotifier-velocity-1.0.3.jar — drop this file into the mods folder
- Download size: 230 KB
- Download link checked 20 Sept 2026 — working
These come from our own check of the pack file, not from the source page.