FTB Library Mod Wiki & Guide
The essential foundation for the Feed The Beast mod suite, providing advanced UI systems, NBT editing tools, and a customizable inventory sidebar for Minecraft.
Overview
FTB Library (often referred to as FTBLib) is the core foundational mod for the entire Feed The Beast (FTB) ecosystem on Minecraft. It serves as a centralized hub for common code, utilities, and graphical user interface (GUI) frameworks used by popular mods such as FTB Chunks, FTB Quests, FTB Teams, and FTB Ultimine.
While primarily a developer tool, FTB Library introduces several critical user-facing features, including the inventory sidebar system, a powerful in-game NBT editor, and a unified configuration system. In version 26.1.2, the mod has transitioned away from Architectury dependencies and moved its configuration format from SNBT to JSON5 for improved compatibility and performance.