Abstract Operations
I don't know my version or loader
a library for easy and lossless interchange between JSON and NBT.
provides a class GenericX for each NbtX (GenericCompound extends HashMap, GenericList extends ArrayList), each supporting functions json()l, nbt(), and map(func) allowing conversion or tree mapping.
supplies a DynamicOps instance (GenericOps) made for easy conversion from json and nbt to generic, with flags to patch the formats to allow lossless conversion. with patchjson enabled, number sizes can be specified in-json by providing a string eg "10b" in the same format as snbt number tags, and lists of numbers are automatically translated to number arrays. patchnbt translates bytes 0-1 into booleans.
versions 1.1.0 and higher also provide explicit support for wispforest's Endec library
reference source for details!
- Edition: Minecraft Java
- File type: .jar
- Minecraft versions listed: 1.21, 1.21.1
- How to install: Install the matching mod loader (Forge, Fabric or NeoForge) for your Minecraft version. → Download the .jar. → Put it in the .minecraft/mods folder and launch that loader profile.
- Where to get it: Opens on Modrinth — not every file is mirrored on our own servers.
Install steps are the general flow for this file type — How to install Minecraft Java mods & modpacks walks through it step by step.
- Ships as abstract_operations-1.2.1+1.21.1.jar — drop this file into the mods folder
- Download size: 65 KB
- Download link checked 30 Aug 2026 — working
These come from our own check of the pack file, not from the source page.