U-API

A lightweight core API library for mods built around the U-API ecosystem.

by tracerxbrhd· lomaeffGame mechanics Library World generation

NeoForge

Loaders: NeoForge
Downloads on Modrinth: 1.1K
Followers on Modrinth: 2
versions: 15
Updated: September 1, 2026Sep 1
Published: in 2026

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At a glance

A library: other mods need it — required by 1 mods

Runs on NeoForge

For Minecraft 1.21.1, 26.2

Needed in the game and on the server

Latest version — 3.0.0+mc26.2 from September 1, 2026

License LGPL-3.0-only — free

Where it's needed

In gamerequiredOn serverrequired

Needed both in the game and on the server

Game versions1.21.1, 26.2

u-api-banner

About U-API

U-API is a lightweight foundational library for Minecraft mods built around the U-API ecosystem.

It provides shared systems, utilities, and integration points used by dependent mods, helping them stay consistent, modular, and easier to maintain.

U-API is not meant to be a standalone content mod.
You should install it when another mod lists it as a required dependency.

What it is used for

Shared API foundation for related mods
Common utilities and internal systems
Consistent integration between dependent mods
Cleaner modular structure for future projects

For players

Install U-API only if a mod requires it.

By itself, U-API does not add new gameplay content, blocks, items, mobs, dungeons, or progression systems.

For modpacks

U-API can be freely included in public and private modpacks. No additional permission is required. When possible, please use the official Modrinth or CurseForge distribution rather than redistributing standalone copies.

Compatibility

Loader: NeoForge
Minecraft: 1.21.1
Environment: Client and Server

FAQ

How to install U-API?

Install NeoForge for your Minecraft version, download U-API for the same version and loader, put the file into the mods folder and launch the game with the loader profile.

Which Minecraft versions does U-API support?

U-API has builds for Minecraft 1.21.1, 26.2.

Is U-API needed on the server?

Needed in the game and on the server

License and source

GNU Lesser General Public License v3.0 onlyfree to use and share; changes to the mod itself must be published under the same license

Original — Modrinth↗Files unchanged, verified with SHA-512Is this your mod? For rights holders