CurseForge · Minecraft mod
Slot Customization API
A small API for mods to dynamically modify inventory slots. Allows changing the position, disabling/enabling slots and adds tooltips for empty slots.
Quick answer
Which Slot Customization API release should I use?
Slot Customization API slot-customization-api-4.1.0.jar targets 26.1, 26.1.1, 26.1.2 with Fabric. The project page does not say whether this file belongs on the client, dedicated server, or both. All 3 required mods have matching files.
Where it goes
Is Slot Customization API required on the client, server, or both?
The project page does not say whether this file belongs on the client, dedicated server, or both.
The source does not explicitly classify this release as client-only or server-only.
What else does Slot Customization API slot-customization-api-4.1.0.jar need?
slot-customization-api-4.1.0.jar. Change the file and its required mods may change too.
Install Fabric API, Fzzy Config, Fabric Language Kotlin first. We found matching files for this game-version and loader setup. 1 comes through another mod in the chain.
1 extra mod was pulled in by another dependency. Indented rows show who needs each one. We only count dependency files that match this setup. A file for another loader does not fill the gap.
Before you install it
Add Slot Customization API without breaking your instance.
Built for Slot Customization API slot-customization-api-4.1.0.jar. Pick another file and the loader, install side or required mods may change.
- 01
Stick to this file
Use slot-customization-api-4.1.0.jar. It targets 26.1, 26.1.1, 26.1.2 with Fabric; another release may have different loader, side or dependency requirements.
- 02
Bring the mods it needs
Install Fabric API, Fzzy Config, Fabric Language Kotlin first. We found matching files for this game-version and loader setup. 1 comes through another mod in the chain.
- 03
Put it on the correct side
The project page does not say whether this file belongs on the client, dedicated server, or both.
- 04
Pick the file you checked
Use the “Get this file” button beside slot-customization-api-4.1.0.jar. It opens that exact file at the source.
About this project
What does Slot Customization API add?
Slot Customization API
On it's own, this API has no impact on the game. However, it allows mod authors to dynamically change inventory slot positions and enable/disable them.
API
Casting a "Slot" to the "SlotCustomization" interface gives access to all relevant methods.
Project description from CurseForge.
Pick your setup
Slot Customization API by Minecraft version and loader
Choose the version and loader you play, then open the matching release.
26.1.2
1 loader build26.1.1
1 loader build26.1
1 loader build1.21.11
1 loader build1.21.10
1 loader build1.21.1
1 loader build1.21
1 loader build1.20.6
1 loader build1.20.1
1 loader buildCheck the dependencies, then try the file in a copied instance before changing a world you care about.
Recent files
Slot Customization API versions and loaders
slot-customization-api-4.1.0.jar
26 Apr 2026
4.1.0
slot-customization-api-4.1.0.jar
26 Apr 2026
slot-customization-api-4.0.1.jar
15 Apr 2026
4.0.1
slot-customization-api-4.0.1.jar
15 Apr 2026
slot-customization-api-4.0.0.jar
15 Apr 2026
4.0.0
slot-customization-api-4.0.0.jar
15 Apr 2026
slot-customization-api-3.1.0.jar
22 Dec 2025
3.1.0
slot-customization-api-3.1.0.jar
22 Dec 2025
slot-customization-api-3.0.0.jar
23 Oct 2025
slot-customization-api-2.2.0.jar
3 Jul 2025
slot-customization-api-2.1.0.jar
31 Aug 2024
slot-customization-api-2.0.0.jar
16 Jul 2024
Looking for an older file? The official CurseForge project page is in Resources.