Conditional Proxy Mod Initializers
A simple library for running a proxy Fabric initializer if a required mod exists
Screenshots

About this Mod
A simple 5-class mod which adds support for initializing code depending on if a specific mod exists.
This mod will always load last, so there is no need to worry about race conditions due to mod load order.
Code and variables must be available before or during any mod initialization stages
(ie cannot be done on datapack reload for example)
Usage:
// Inside main ModInitializer, ClientModInitializer, or any class that gets called at some point during Fabric init
// For running an instance of a ModInitializer:
ConditionalModInitializer myConditionalModInitializer = new ConditionalModInitializer.Builder().mods("some-mod").initializer(SomeOtherInitializer.class).build();
// For running any unspecified code:
ConditionalModInitializer myConditionalRunner = new ConditionalModInitializer.Builder().mods("some-other-mod").found(() -> {
// Code goes here
}).build();
public void onInitialize() {
ConditionalModInitializer.create().mods("some_mod").required_mods("some_other_dependency_mod").initializer(AnotherInitializer.class).build();
}
- NOTE: new ConditionalModInitializer.Builder() MUST be assigned to a variable, or be called inside a function to work! Static declaration (
static{}will NOT work!)
Docs:
ConditionalModInitializer
create()-> Returns a new Builder() instance. (Same as runningnew ConditionalModInitializer.Builder())mods()-> List: Returns the list of any mod that is required for this initializer required_mods()-> List: Returns list of all required mods for this initializer can_run-> Boolean : Whether or not the initializer has ran yetenvironment()-> ExtendedEnvType : Returns the environment (initializer type) for this initializerExtendedEnvType.CLIENT: ClientModInitializerExtendedEnvType.SERVER: ModInitializerExtendedEnvType.DEDICATED_SERVER: DedicatedServerModInitializer
on_found()-> Runnable : Returns the function to call when a required mod is found
ConditionalModInitializer.Builder
mods(String...): Appends to the list of mods that will allow this initializer to runrequired_mods(String...): Appends to the list of required mods for this initializerenvironment(ExtendedEnvType): Sets the environment of the initializer (Default:ExtendedEnvType.SERVER: ModInitializer)found(Runnable): Code to execute if the mod is foundinitializer(Class<ModInitializer>): Initializer to run if the mod is foundmainInitializer(Class<ModInitializer>): Initializer to run if the mod is foundclientInitializer(Class<ClientModInitializer>): Initializer to run if the mod is foundserverInitializer(Class<DedicatedServerModInitializer>): Initializer to run if the mod is foundbuild(): Returns the finalized ConditionalModInitializer
Available Versions
How to Install Conditional Proxy Mod Initializers on Your Server
Order Server
Order a Minecraft Java server with at least 3 GB RAM (4 GB recommended).
Set fabric Loader
In the panel under "Egg", select the fabric loader and matching Minecraft version (1.21).
Install Mod
Open the mod browser in the dashboard and search for "Conditional Proxy Mod Initializers". Click "Install" – done! Alternatively, upload the .jar via SFTP to the /mods folder.
Compatibility
Mod Loaders
Minecraft Versions
1.21, 1.20.6, 1.20.5 (+29 more)
Server-side
✓ RequiredRecommended RAM
4 GB(min. 3 GB)Frequently Asked Questions
Conditional Proxy Mod Initializers server crashes on startup – what to do?
Most common cause: wrong fabric version or insufficient RAM. Check the server log (latest.log) for "OutOfMemoryError" or "Mixin" errors. With Mado Hosting: ensure at least 3 GB RAM is allocated and the loader matches the mod version (1.21). You can switch loaders with one click in the panel.
Is Conditional Proxy Mod Initializers compatible with fabric?
Conditional Proxy Mod Initializers officially supports fabric for Minecraft 1.21, 1.20.6, 1.20.5. The Mado dashboard automatically detects incompatible loader combinations.
Server lagging with Conditional Proxy Mod Initializers – how to optimize performance?
Recommended RAM: 4 GB (per 8 players). Use /spark profiler to check if Conditional Proxy Mod Initializers consumes the most tick time. Common fixes: reduce server view-distance to 8-10, install "performant" or "starlight" as supplementary mods on Forge. With Mado Hosting, your server runs on NVMe SSDs with dedicated CPU cores for minimal latency.
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Rent Modded Server
Install Conditional Proxy Mod Initializers with just one click on your server.