
Modrinth · Minecraft mod
GroovyScript
A scripting mod for minecraft 1.12
Quick answer
Which GroovyScript release matches 1.12.2 Forge?
GroovyScript 1.4.3 targets 1.12.2 with Forge. Installation on the client is optional. Installation on the dedicated server is optional. All 1 required mods have matching files.
Where it goes
Is GroovyScript required on the client, server, or both?
Installation on the client is optional. Installation on the dedicated server is optional.
The source marks this as usable on both the client and server.
What else does GroovyScript 1.4.3 need?
1.4.3 on 1.12.2 Forge. Every mod below is checked against that same setup.
Install MixinBooter first. We found matching files for this game-version and loader setup.
We only count dependency files that match this setup. A file for another loader does not fill the gap.
Before you install it
Add GroovyScript without breaking your instance.
Built for GroovyScript 1.4.3 on 1.12.2 Forge. Pick another file and the loader, install side or required mods may change.
- 01
Stick to this file
Use 1.4.3. It targets 1.12.2 with Forge; another release may have different loader, side or dependency requirements.
- 02
Bring the mods it needs
Install MixinBooter first. We found matching files for this game-version and loader setup.
- 03
Put it on the correct side
Installation on the client is optional. Installation on the dedicated server is optional.
- 04
Pick the file you checked
Use the “Get this file” button beside 1.4.3. It opens that exact file at the source.
About this project
What does GroovyScript add?
A scripting / tweaking mod that allows you to alter various game mechanics without having to set up a mod.
Most of the time it is used to create new recipes.
Here are some key features of GroovyScript (short GrS):
Features:
- Groovy: a powerful and tested scripting language
- Java-compatible syntax + interoperable code
- Static compilation
- Optional dynamic typing
- Metaprogramming
- Sandboxed: scripts are effectively ran in a sandbox, with sensitive operations blacklisted from being called or referenced
- Reloading: able to test script changes within the game without restarting
- Most if not all Forge Registry objects can be reloaded on the fly
- Most mod registries are supported natively
- Events: Easily listen to Forge's EventBuses with Groovy Closures
- Familiarity: Bracket handlers for those that are familiar with CraftTweaker (currently implemented, may be removed in the near future)
- Informational: commands to display rich information for the item in your hand and more
- Optimized: Making sure no compromises are being made while delivering features with efficient code
- API: Great catalogue of code for other mod authors to make their mods compatible with GroovyScript such as package/class/method/field blacklists
Mod Compat
Technically there is already mod compat for every mod possible, since you can access all code directly. However GroovyScript does add helper methods to make everything cleaner and easier.
Reloading for recipe registries must be implemented manually by us and its very tedious. We currently support a few mods for reloading recipes, but we would very much appreciate if anyone can help adding compat and/or writting wiki pages.
FaQ
Does it have support for X mod? Can do X from X mod?
Groovy can access almost every java code. This means almost everything is "supported", if you know how to do it. Stuff like recipes are not reloadable. We would need to add support manually for that specific recipe type.
Can you add support for X mod?
Probably. We intent to make it work with pretty much every mod. If your desired mod is not yet supported you can ask us about it on the Discord.
Why is the mod file so large?
In order for the mod to work we need to inlcude the Groovy libraries, which are decently sized.
Is this compatible with CraftTweaker and KubeJS?
Yes, but there is no point in doing that (exept that CraftTweaker currently supports more mods.)
Why would i use this over CraftTweaker?
All the reasons are mention above in the Features. Being able to reload scripts on the fly is the biggest argument for GroovyScript imo.
Project description from Modrinth.
Pick your setup
GroovyScript by Minecraft version and loader
Choose the version and loader you play, then open the matching release.
1.12.2
1 loader buildCheck the dependencies, then try the file in a copied instance before changing a world you care about.
Recent files
GroovyScript versions and loaders
1.4.3
groovyscript-1.4.3.jar
14 Apr 2026
1.4.2
groovyscript-1.4.2.jar
3 Apr 2026
1.4.1
groovyscript-1.4.1.jar
25 Mar 2026
1.4.0
groovyscript-1.4.0.jar
15 Mar 2026
1.3.4
groovyscript-1.3.4.jar
16 Jan 2026
1.3.3
groovyscript-1.3.3.jar
17 Dec 2025
1.3.1
groovyscript-1.3.1.jar
10 Oct 2025
1.3.0
groovyscript-1.3.0.jar
9 Oct 2025
1.2.5
groovyscript-1.2.5.jar
29 Jul 2025
1.2.5
groovyscript-1.2.5.jar
25 Jun 2025
1.2.4
groovyscript-1.2.4.jar
11 May 2025
1.2.3
groovyscript-1.2.3.jar
2 Apr 2025
Looking for an older file? The official Modrinth project page is in Resources.