JelloUI public API documentation for Minecraft Fabric addon developers.
JelloUI is an independent client-side UI platform and prerequisite mod for Minecraft Fabric. It provides a stable public API for component registration, ClickGUI content, HUDs, notifications, themes, animation, profiles, keybinds, world-space rendering and music playback. Some definitions are metadata-only or not yet wired end to end; each guide documents the current runtime support.
This documentation is intended for addon developers who want to extend or integrate with JelloUI.