CrimsonSteveApi

An api for improving the usage of vanilla animation system mainly

Which build do you need?

This mod ships a separate file for every mod loader and every version of the game. Pick both, then download — the wrong build installs fine and then does nothing in the game.

Mod loader

Mod loader NeoForge3 builds
Mod loader Forge1 build

Minecraft version

Minecraft 1.21.8Newest
Minecraft 1.21.1
Minecraft 1.20.1

Minecraft 1.20.1Newest

⬇ Download for 1.21.8 · NeoForge ⬇ Download for 1.21.1 · NeoForge ⬇ Download for 1.20.1 · NeoForge ⬇ Download for 1.20.1 · Forge

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.

Open in MCModsHub Get it on Google Play →

This mod is an api mod for my mods. Especially about improving the usage of java animation for making my mods more comfortably. Also contains some other stuff I use a lot.

Contains...

Some vector utils
Interfaces that I use in almost every mods
Animation utils for making animations with fade in/out or applying interpolation like geckolib's animation

Verified by MCModsHub

Ships as CrimsonSteveApi-1.1.jar — drop this file into the mods folder
Download size: 18 KB
Download link checked 22 Aug 2026 — working

These come from our own check of the pack file, not from the source page.

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All Mods for Java All Minecraft Java mods Java mods for 1.21 Java mods for 1.20