FoxifiedClassTweaker

The library provides support for ClassTweaker files on NeoForge, the format used to widen access to classes, methods and fields in the game code. Mods that ship ClassTweaker or AccessWidener files depend on it so those files take effect at load time, and it is required by BoccHUD and ServuxForged.

Developers who write ClassTweaker or AccessWidener files are advised to use a Loom-based development environment where possible, such as architectury-loom. The author notes that the files must be placed in the matching directory and must be theoretically compatible with the corresponding AccessWidener files. The library also avoids nesting a processor package inside its jar, so players do not need to install a separate package.

Using FancyModLoader version 10 or above is supported, and the FML 10 environment works only with the official setup. Any mod that depends on this library should specify it as a dependency so the installer pulls it in. Builds cover game versions 26.1 – 26.3, with five release versions published and 0.1.2 for 26.3 as the latest NeoForge file on the alpha channel. The project is open source under the Apache License 2.0, and its source code and issue tracker are public.