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Container Core

Create and customize containers with text files!

Fabric
Loaders
Fabric
Downloads on Modrinth
146
Followers on Modrinth
3
versions
2
Updated
August 19, 2026Aug 19
Published
in 2026
This is a library — other mods need it, and it adds nothing to the game by itself
For everyone — Allows players to change your container while having an easier time creating them with even more options! · swipe

At a glance

A library: other mods need it
Runs on Fabric
For Minecraft 1.21.11
Client only — no need to install it on the server
Latest version — 2.0.0-BetaPreview from August 19, 2026
Requires Fabric API
Where it's needed
In gamerequiredOn servernot needed

Install in the game only; not needed on the server

Game versions1.21.11

Container Core

Container Core lets you reshape Minecraft's inventory and container screens by editing simple text files, so, no modding experience required. 'Chests, the crafting table, the anvil, the creative menu, and more' can all be restyled, rearranged, or reimagined without touching a line of Java :D i'm finally close to a release

Just imagine it: the GIF below shows your character (can be your mounted animal or any mob) that turns to face your cursor. It's the usual mob preview you see in the survival inventory, but you control where it sits and what mob to use, at any screen, mid game, all from a json text file. (the gif is from a very old version)

Click me!!! Example

It's easy to use

  • You don't need to be a developer. Everything is plain JSON inside a resource pack. Move a slot, change a panel, drop in sprites, simply by editing text. (Screens without a json file open as vanilla.)
  • Changes show up instantly. Press F3+T in-game and your edits just reload, it just works.
  • It gets along with other packs. Textures and objects stack cleanly, so your tweaks can sit alongside other resource packs.
  • Lots to build with. some ready-made widgets and simple elements, there's even layouts for all ~23 vanilla container types inside [Vanilla Defaults].

For mod developers

You know authors get the JSON layer, but the engine opens up if you're writing a mod, from your code you can register new objects and elements, define custom show/hide conditions, and add new container screens all through Container Core's Java API. That means an add-on mod can contribute its own objects for pack authors to drop into JSON, and other mods can drive their own menus through it. (A few already do see below.)

Getting started

There's the wiki, with step-by-step guides and documentation: https://github.com/dcqout/dcqinvcore/wiki

Already using Container Core

A few projects build on it:

What is to come

For now only a beta 2 preview is released, i'm holding the next version til my mod that let's you expand the inventory size is reviewed.

FAQ

How to install Container Core?

Install Fabric for your Minecraft version, download Container Core for the same version and loader, put the file into the mods folder and launch the game with the loader profile.

Which Minecraft versions does Container Core support?

Container Core has builds for Minecraft 1.21.11.

Is Container Core needed on the server?

Client only — no need to install it on the server

License and source
Mozilla Public License 2.0free to use and share; changes to the mod itself must be published under the same license
Original — Modrinth↗Files unchanged, verified with SHA-512Is this your mod? For rights holders

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