Forge & NeoForge Mod Generator

Generate Forge mods
without writing Java

Describe your mod in plain English. StackNest writes full Forge/NeoForge code, compiles it server-side, and hands you a working .jar — ready for MinecraftForge or NeoForge.

Free tier · No credit card · MinecraftForge & NeoForge · 1.20 – 1.21

You type:
"A NeoForge 1.21 mod that adds a custom pickaxe 'Obsidian Breaker' with 2000 durability and +4 mining speed. Crafted with 2 obsidian and a stick in an H shape. Has a custom texture slot (placeholder texture). Registered with DeferredRegister."
StackNest delivers:
ObsidianBreaker.java ModItems.java ObsidianBreakerMaterial.java recipes/ lang/en_us.json build.gradle obsidian-breaker-1.0.jar ✓
How it works

From plain English to a compiled
Forge mod in under a minute

StackNest knows modern Forge patterns — DeferredRegister, event buses, ForgeConfigSpec, and ForgeGradle.

1

Describe your Forge mod

Write what you want in plain English. Mention custom items, blocks, entities, recipes, world gen, config values, or any Forge API feature. Specify Forge or NeoForge and the target Minecraft version.

2

AI generates Forge/NeoForge source

A specialised model generates all Java classes using DeferredRegister, mods.toml, build.gradle, resource JSON files, and recipe data — correctly structured for the requested modloader.

3

Compiles with ForgeGradle, auto-healed

StackNest builds the mod using Gradle ForgeGradle server-side. On compile errors, it runs up to 5 automatic fix passes — reading the compiler output and patching broken sections until the build succeeds.

4

Drop into mods/ and launch

Download the finished .jar and drop it into your mods/ folder alongside MinecraftForge or NeoForge. No local toolchain needed.

What StackNest handles

Full Forge API coverage

Modern Forge patterns — DeferredRegister, event buses, config specs, and more — handled automatically.

Custom Items & Blocks

DeferredRegister<Item> and DeferredRegister<Block> setup, model JSON, blockstate files, lang entries, and correct @Mod.EventBusSubscriber registration.

Custom Entities

Entity class, EntityType DeferredRegister, renderer stub, spawn egg item, and correct entity data serialiser setup for multiplayer sync.

Commands (Brigadier)

RegisterCommandsEvent listener, Brigadier command tree, argument types, permission level checks, and server-side execution logic.

Recipes

Shaped, shapeless, and smelting recipe JSON files — correctly placed in the data pack structure and automatically included in the mod jar.

ForgeConfigSpec

TOML config files using ForgeConfigSpec.Builder with typed values, comments, range validation, and reload support — server and client configs.

World Generation

Ore generation, custom biome modifiers, structure features — using the Forge BiomeModifier JSON system and correct DeferredRegister setup.

Example prompts

What people are building

Real mod descriptions that StackNest can build for you instantly.

"A NeoForge 1.21 mod adding a custom ore 'Titanium Ore' that generates at Y -40 to -60, drops Titanium Ingots, has a hardness of 5.0, and requires at least iron pickaxe tier to mine."
✓ Compiled · titanium-mod-1.0.jar · 9 files
"A Forge 1.20.1 mod that adds a /heal command using Brigadier. Heals the command sender to full health and hunger. Requires permission level 2. Shows a green title message."
✓ Compiled · heal-command-mod.jar · 3 files
"A NeoForge mod that cancels all fall damage when the player is holding a Feather. Uses @SubscribeEvent on LivingFallEvent. Configurable via ForgeConfigSpec whether the feather is consumed on use."
✓ Compiled · feather-fall-mod.jar · 4 files
"A Forge mod that adds a Magic Wand item. Right-clicking shoots a fireball from the player's position in their look direction. 5-second cooldown shown in the action bar. Crafted with 3 blaze rods."
✓ Compiled · magic-wand-mod.jar · 5 files
Supported

Forge and NeoForge versions

StackNest targets both major Forge modloaders and the most popular Minecraft versions.

NeoForge 1.21.4 NeoForge 1.21.1 NeoForge 1.20.1 MinecraftForge 1.20.1 ForgeGradle DeferredRegister ForgeConfigSpec Brigadier Commands BiomeModifiers Custom Recipes JEI Integration
FAQ

Common questions

What is a Forge mod generator?

A Forge mod generator creates custom mods for MinecraftForge or NeoForge. AI-powered tools like StackNest handle writing the Java source with the Forge API, compiling it with Gradle ForgeGradle, and packaging it as a ready-to-use .jar — no Java or Gradle knowledge needed.

Does StackNest support both Forge and NeoForge?

Yes. Mention which modloader you want in your prompt. StackNest will use MinecraftForge for older versions and NeoForge for 1.20.1+ where NeoForge has become the modern community standard. The core patterns (DeferredRegister, event buses) are almost identical and StackNest handles the differences automatically.

Can it add custom items, blocks, and entities?

Yes. StackNest uses DeferredRegister for all registry objects — the modern Forge pattern. It generates model JSON, blockstate files, lang entries, and correct @Mod.EventBusSubscriber and @SubscribeEvent setup so everything is registered properly.

Does StackNest generate ForgeConfigSpec configs?

Yes. StackNest uses ForgeConfigSpec to generate type-safe TOML config files with correct builder patterns, default values, range validation, and reload handling — for both client and server configs.

Do I need a local Forge development environment?

No. StackNest compiles the mod on its own servers using Gradle ForgeGradle. You download the finished .jar and drop it into your mods/ folder alongside MinecraftForge or NeoForge. No local toolchain required.

Ready to generate your Forge mod?

Free to start. No credit card. Your first mod in under a minute.

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