SlotKit
by trevlar
SlotKit is a Fabric library for mods that create their own inventory slots, letting a mod build menus with real slots that persist and sync.
What it does
SlotKit gives Fabric mods a way to create slots that behave like vanilla ones. Created slots work in creative and survival modes, keep their contents through death, and are synced with vanilla's protocol, so a container shows them as ordinary slots. Containers load with conversion for shulker boxes and keep their contents and slot state.
The library is built on MenuKit, which supplies the panels that hold the slots. A mod using SlotKit declares that it needs it on both sides, and the server refuses only players who lack the mod. Players who have it join normally. A client can still join a server that does not run SlotKit, since the server can run without it.
SlotKit is published for Fabric only, for game versions 1.21.11 – 26.3, with 1.1.0+26.3 for 26.3 as the latest file. It requires Fabric API and MenuKit. The code is released under the MIT License and is open source, and the project has public source, issue tracker and wiki links.
Key features
Slot groups
Mods declare slot groups and the operations on them, and SlotKit tracks the state of each created slot.
Custom container menus
Mods build custom menus with real slots, such as an extra equipment slot or a satchel in the player's inventory.
Panels beside the inventory
A MenuKit panel can be placed above the player inventory or beside it, with nine real slots shown on the screen.
World data persistence
Items in created slots are saved with the world, so the contents remain after a restart.
Compatibility
Latest build for each game version and loader.
Only full game releases are shown. This mod publishes no snapshot builds.
Requirements
Dependencies declared by the latest file for each loader.
Required 2
Required by 2 mods
Use cases
Who it’s for: SlotKit is for mod developers who want to add slots to the player inventory, chests or other containers. Players do not need to configure it beyond installing the mods that use it.
Questions
Does SlotKit need to be on the server?
Which mods require SlotKit?
What does SlotKit depend on?
In the catalog
SlotKit is one of 3,514 Library mods on ModsFinder, and one of 2,348 Library mods for Fabric. 8,071 mods support Minecraft 26.3.
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What the author says
SlotKit is a slot library for Fabric mods, built on MenuKit. A mod uses it to find and act on the slots in any menu, or to build real slots and custom menus that persist and sync. Requires MenuKit 7 and Fabric API. Worlds and player files saved with MenuKit: Containers load with no conversion, and shulker boxes keep…
Official listing
- Modrinth page
- modrinth.com/mod/slotkit
- Owner
- trevlar
- Published
- 2026-05-16
- Updated on Modrinth
- 2026-10-14
- Facts verified
- 2026-10-15