Abstract Operations
Json <-> NBT interchange library
About this Mod
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!
Available Versions
How to Install Abstract Operations on Your Server
Order Server
Order a Minecraft Java server with at least 3 GB RAM (4 GB recommended).
Set fabric Loader
In the panel under "Egg", select the fabric loader and matching Minecraft version (1.21.1).
Install Mod
Open the mod browser in the dashboard and search for "Abstract Operations". Click "Install" – done! Alternatively, upload the .jar via SFTP to the /mods folder.
Compatibility
Mod Loaders
Minecraft Versions
1.21.1, 1.21, 1.20.1
Server-side
✓ RequiredRecommended RAM
4 GB(min. 3 GB)Frequently Asked Questions
Abstract Operations server crashes on startup – what to do?
Most common cause: wrong fabric version or insufficient RAM. Check the server log (latest.log) for "OutOfMemoryError" or "Mixin" errors. With Mado Hosting: ensure at least 3 GB RAM is allocated and the loader matches the mod version (1.21.1). You can switch loaders with one click in the panel.
Is Abstract Operations compatible with fabric and forge and neoforge and quilt?
Abstract Operations officially supports fabric, forge, neoforge, quilt for Minecraft 1.21.1, 1.21, 1.20.1. Note: Forge and Fabric mods are NOT cross-compatible – pick one loader and stick with it. The Mado dashboard automatically detects incompatible loader combinations.
Server lagging with Abstract Operations – how to optimize performance?
Recommended RAM: 4 GB (per 8 players). Use /spark profiler to check if Abstract Operations consumes the most tick time. Common fixes: reduce server view-distance to 8-10, install "performant" or "starlight" as supplementary mods on Forge. With Mado Hosting, your server runs on NVMe SSDs with dedicated CPU cores for minimal latency.
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Rent Modded Server
Install Abstract Operations with just one click on your server.