SI: API Mod is a library API created by the popular mod development team Soncresity Industries. The API provides a modular and unified backend interface that powers all core projects developed by the team. As a player, you only need to have this mod installed if another mod requires it as a dependency.
Features:
- Library API created by development team Soncresity Industries.
- Provides a unified and modular backend interface for mods.
- Does not add anything new to the game on its own.
Screenshots:
SI: API Mod Download Links
For All Versions from Minecraft 1.21 to Minecraft 1.21.8
NeoForge version: Download from Server 1 – Download from Server 2
Quick facts
- Edition: Minecraft Java
- File type: .jar
- Minecraft versions listed: 1.21.8, 1.21.1
- 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: In MC Java Mods, or directly above on this page.
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
- Downloads as 177635.mcaddon
- Download size: 214 KB
- Download link checked 24 Jul 2026 — working
- Mirrored on our own servers — the download does not depend on the original host
These come from our own check of the pack file, not from the source page.