Modpack Checker
ModA lightweight Fabric mod for Minecraft servers to verify that clients are using the correct modpack version.
Type
Mod
Modrinth Downloads
3,612
Modrinth ID
LbG0j53h
Last Updated
Aug 29, 2026
Description
Modpack Checker
A lightweight Fabric mod to verify that players use the correct modpack version on your server.
Features
- Simple version-based client-server check (no modlist comparison)
- Automatic disconnect with helpful messages
- Easy-to-edit TOML config files for both client and server
- /reload support to apply changes without restarting
- Dev mode: use version 0.0.0 to disable checks during development
How It Works
- Server sends a version check during login
- Client replies with the version from modpack-checker-client.toml
- Server compares it to its expected version
- If mismatched, the player is kicked with a custom message
Configuration
Server (config/modpack-checker-server.toml):
enable = true expected_version = "1.0.0" [messages] no_mod = "Please install the Modpack: <your-modpack-link>" wrong_version = "Please install modpack version {version}: <your-modpack-link+version>" server_error = "Server configuration error. Please contact an administrator."Client (config/modpack-checker-client.toml):
version = "1.0.0"Compatibility
Mod Loaders
Game Versions
Recommended Gear
AffiliateHardware and extras that pair well with this mod.
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Screenshots
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