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Modpack Checker

Modpack Checker

A lightweight Fabric mod for Minecraft servers to verify that clients are using the correct modpack version.

48
2

Compatibility

Minecraft: Java Edition

1.21.x
1.20.x

Platforms

Supported environments

Client and server
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Links

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Creators

TriibuNupsik
TriibuNupsik Member

Details

Licensed Apache-2.0
Published 2 days ago
Updated 2 weeks ago

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

  1. Server sends a version check during login
  2. Client replies with the version from modpack-checker-client.toml
  3. Server compares it to its expected version
  4. 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"