Konfig

Konfig is a multiloader configuration library for Minecraft mods.

It lets mods declare typed config values in common code, save them as commented TOML, sync selected values to clients, and generate config screens for Fabric, Forge, and NeoForge.

Konfig is built for shared common code. Loader-specific integration stays in the loader roots, while config declaration, validation, migration, sync metadata, and screen metadata can live beside the rest of your mod logic.

What You Get

Typed config values for booleans, numbers, enums, strings, string lists, RGB/ARGB colors, and custom codecs
Side-aware config scopes: CLIENT, COMMON, and SERVER
Commented TOML files at config/<modid>/<name>.toml
Built-in sync modes: NONE, LOGIN, and LOGIN_AND_RELOAD
Schema versioning and step-by-step migrations
Generated config screens for registered handles
Inline screen decorations: headers, images, descriptive text, and clickable URLs
Explicit tooltips for generated screen rows
Rich hover info panels for global, category, and value-specific help
Fabric Mod Menu integration
Forge and NeoForge config button helpers

Pics

Supported Versions

Konfig 0.3.0 supports every Minecraft line from 1.14.4 through 26.1.2.

Fabric starts at 1.14.4
Forge starts at 1.16.5
NeoForge starts at 1.21.1

Konfig uses one semantic release across supported Minecraft lines. The +<mc> suffix tells you which Minecraft version the artifact targets, for example 0.3.0+1.21.11 or 0.3.0+26.1.2.

Quick Example

import com.iamkaf.konfig.api.v1.ConfigBuilder;
import com.iamkaf.konfig.api.v1.ConfigHandle;
import com.iamkaf.konfig.api.v1.ConfigScope;
import com.iamkaf.konfig.api.v1.ConfigValue;
import com.iamkaf.konfig.api.v1.Konfig;
import com.iamkaf.konfig.api.v1.RestartRequirement;
import com.iamkaf.konfig.api.v1.SyncMode;

public final class ExampleConfig {
    public static final ConfigHandle HANDLE;
    public static final ConfigValue<Boolean> ENABLED;
    public static final ConfigValue<Integer> RANGE;

    static {
        ConfigBuilder builder = Konfig.builder("examplemod", "common")
                .scope(ConfigScope.COMMON)
                .syncMode(SyncMode.LOGIN)
                .comment("Example mod config")
                .info(info -> info
                        .header("Example Mod")
                        .inlineText("These settings control shared gameplay behavior.")
                        .url("Documentation", "https://example.invalid/docs"));

        builder.header("Example Mod Settings");
        builder.inlineText("These entries are saved automatically.");
        builder.url("Documentation", "https://example.invalid/docs");

        builder.push("general");
        builder.categoryComment("General gameplay tuning");
        builder.categoryTooltip("General gameplay tuning");
        builder.categoryInfo(info -> info
                .header("General")
                .inlineText("Values in this section affect the whole mod."));

        ENABLED = builder.bool("enabled", true)
                .comment("Master toggle")
                .tooltip("Enable example mod features")
                .sync(true)
                .info(info -> info
                        .header("Master Toggle")
                        .inlineText("Turns the main feature set on or off."))
                .build();

        RANGE = builder.intRange("range", 8, 1, 64)
                .comment("Effect radius")
                .tooltip("Controls the effect radius in blocks")
                .sync(true)
                .restart(RestartRequirement.WORLD)
                .build();

        builder.pop();
        HANDLE = builder.build();
    }
}

Use ConfigValue#get() when reading a value and ConfigValue#set(value) when changing it programmatically.

Comments are written to TOML. Generated-screen hover text is explicit through tooltip(...) and richer info(...) content, so your config files and UI help can say different things when needed.

Dependencies

Add the Kaf Maven repository:

repositories {
    maven { url = "https://maven.kaf.sh" }
}

Use the loader artifact for the Minecraft line you target:

modImplementation "com.iamkaf.konfig:konfig-fabric:<version>"
modImplementation "com.iamkaf.konfig:konfig-forge:<version>"
modImplementation "com.iamkaf.konfig:konfig-neoforge:<version>"

Do not depend on Konfig common directly. Use the loader-specific artifact.