ModsJava
Rhino
I don't know my version or loader
Open the Minecraft launcher and look at the profile you play on — it names both, like fabric-loader-1.21.4. The version also shows in the bottom-right corner of the game's main menu.
No loader in the profile name? Then it's plain Minecraft, and these mods won't run — you need Fabric or NeoForge installed first.
A fork of Mozilla's Rhino library, modified for use in mods. This library adds JavaScript engine Rhino that supports ES6 and doesn't depend on built-in Nashorn engine that got removed in Java 15.
This mod doesn't do anything on it's own, it's a library used by KubeJS.
Quick facts
- Edition: Minecraft Java
- File type: .jar
- Minecraft versions listed: 1.21, 1.21.1, 1.21.2
- How to install: Install the matching mod loader (Forge, Fabric or NeoForge) for your Minecraft version. → Download the .jar. → Put it in the .minecraft/mods folder and launch that loader profile.
- Where to get it: Opens on Modrinth — not every file is mirrored on our own servers.
Install steps are the general flow for this file type — How to install Minecraft Java mods & modpacks walks through it step by step.
Verified by MCModsHub
- Ships as rhino-2101.2.8-build.91.jar — drop this file into the mods folder
- Download size: 958 KB
- Download link checked 8 Sept 2026 — working
These come from our own check of the pack file, not from the source page.
