The Fabric API is a Minecraft Java Edition mod that provides common hooks and intercompatibility measures for other mods. It is designed to be lightweight and modular, making it a useful tool for mod developers. The Fabric API is intended for use by mods that utilize the Fabric toolchain, helping to ensure compatibility and functionality between different mods.
The Fabric API can be used by loading it on both the client and server sides using the Fabric loader. As a library mod, it is designed to be used in conjunction with other mods, providing a foundation for their functionality. The Fabric API requires the Fabric loader to be installed in order to function properly.