---
title: "Fabric Loader vs Fabric API — Prism Launcher & Modded Minecraft Glossary"
description: "Fabric Loader is the base runtime installed in the Version tab; Fabric API is the standard library JAR placed in the Mods tab. Learn how Fabric Loader vs Fabric API works in Prism Launcher on Windows."
canonical: https://prismlauncher.ink/words/fabric-api-vs-fabric-loader
updated: 2026-10-17
---

# Fabric Loader vs Fabric API

Fabric Loader is the base runtime installed in the Version tab; Fabric API is the standard library JAR placed in the Mods tab.

## Facts (2026-10-17)

- **Term:** Fabric Loader vs Fabric API
- **In Short:** Fabric Loader is the base runtime installed in the Version tab; Fabric API is the standard library JAR placed in the Mods tab.
- **Applies To:** Prism Launcher on Windows 10 & 11

## Definition: Fabric Loader vs Fabric API

Fabric Loader is the base runtime installed in the Version tab; Fabric API is the standard library JAR placed in the Mods tab.

Almost every Fabric mod requires `fabric-api.jar` inside the `mods/` folder in addition to enabling Fabric Loader on the instance.

## How Prism Launcher handles this on Windows

Every instance in Prism Launcher exposes its version stack, mod list, resource packs, shader packs, and JVM settings in one clean Edit Instance window.

Grab the latest Windows installer or portable ZIP from [/download](https://prismlauncher.ink/download) to manage all your Minecraft versions in one place.

## FAQ

### What does Fabric Loader vs Fabric API mean in Prism Launcher?

Fabric Loader is the base runtime installed in the Version tab; Fabric API is the standard library JAR placed in the Mods tab. Almost every Fabric mod requires `fabric-api.jar` inside the `mods/` folder in addition to enabling Fabric Loader on the instance.

### Where can I configure this inside the launcher?

Right-click any instance on the Prism Launcher dashboard and select **Edit** (or open global **Settings** on the top toolbar).

## Related

- [Prism Launcher Technical Glossary](https://prismlauncher.ink/words)
- [Prism Launcher Instance Management](https://prismlauncher.ink/instances)
- [Prism Launcher Java & JVM Configuration](https://prismlauncher.ink/java)
- [Prism Launcher Mod Loaders](https://prismlauncher.ink/loaders)
- [Instance (Isolated Minecraft Environment)](https://prismlauncher.ink/words/minecraft-instance)

## Download

Free and open source: [Download Prism Launcher](https://prismlauncher.ink/download)

Markdown mirror: https://prismlauncher.ink/words/fabric-api-vs-fabric-loader.md