Selective Slots
by D3v1s0m
Selective Slots lets players switch individual slots of chests, hoppers, dispensers and shulker boxes between enabled and disabled, for Fabric on 1.21.11.
What it does
Clicking a slot in a supported container toggles it between enabled and disabled, and a click-and-drag applies the same state across several slots at once. Disabled slots show a crafter-style visual, and hoppers and droppers will not insert items into them. Comparator output can optionally count only the filled enabled slots, and disabled slot states are kept on shulker boxes when they are broken and picked up.
The mod only supports vanilla containers, so modded containers need their own integration before disabled slots work on them. Fabric API and Fabric Language Kotlin are required, and Mod Menu is optional for client settings. Selective Slots is client and server, so the server and every player need it. It is released under the MIT License and is open source.
Key features
Individual slot toggling
Each slot of a supported container can be enabled or disabled with a single click.
Drag toggle
Clicking and dragging across several slots applies one toggle state to all the selected slots.
Hopper and dropper respect
Hoppers and droppers do not insert items into disabled slots, so a container can be partly closed to automation.
Comparator behavior
Comparators can read only enabled slots, and a per-container option controls whether disabled slots count toward the signal.
Shulker box persistence
Disabled slot states stay with a shulker box after it is broken and picked up, and the behavior can be turned off in the server configuration.
Gallery
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
Optional 1
Use cases
Who it’s for: Players who run hopper systems in vanilla chests, hoppers, dispensers and shulker boxes, and server owners who want to set those rules for each container type.
How it compares
Chest Radar is a Fabric mod for 1.21.11 that is also client and server and open source under the Apache License 2.0, so it covers a different job from slot control. Shulker Packer Mod is Fabric for 1.21.1, client and server, under the MIT License, and it is not open source. BetterPeek is Fabric for 1.21.11 and client-side only, so it needs no server install, and it is under the MIT License without being open source.
| Mod | Loaders | Game versions | Environment | Updated |
|---|---|---|---|---|
| Selective Slots | Fabric | 1.21.11 | Client and server | 2026-05-16 |
| Chest Radar | Fabric | 1.21.11 | Client and server | 2026-06-30 |
| Shulker Packer Mod | Fabric | 1.21.1 | Client and server | 2026-05-14 |
| BetterPeek | Fabric | 1.21.11 | Client-side only | 2026-05-25 |
Questions
Does Selective Slots need Fabric API?
Does the server need Selective Slots?
Can modded containers use disabled slots?
In the catalog
Selective Slots is one of 4,058 Storage mods on ModsFinder, and one of 2,474 Storage mods for Fabric. 19,862 mods support Minecraft 1.21.11.
Similar mods
What the author says
A lightweight, vanilla-friendly mod for disabling individual slots in containers like chests, hoppers, dispensers, and shulker boxes. Click a slot to toggle it between enabled and disabled.
Official listing
- Modrinth page
- modrinth.com/mod/selective-slots
- Owner
- D3v1s0m
- Published
- 2026-05-16
- Updated on Modrinth
- 2026-05-16
- Facts verified
- 2026-10-15