Smart Stack Refiller
by FluxFallen
Smart Stack Refiller watches the selected hotbar slot and refills it from matching items in the inventory when its stack runs out.
What it does
When the held item reaches zero, Smart Stack Refiller searches the inventory for another stack of the same item and moves it into the selected hotbar slot. The swap happens at once, so a player keeps placing blocks, eating food or throwing items without pausing to reopen the inventory. Only stackable items are affected, such as blocks and food, and the behavior is limited to hotbar slots that the player is actually using.
The mod is a lightweight client-side addition for Fabric. Setup is not required beyond installing it. It is released under the MIT License and is open source, with public source code and an issue tracker. Files target game versions 1.21.11 – 26.1.2, with the latest build 1.1.0 for 26.1.2 published on 2026-05-07, and it was first published on 2026-03-25.
Key features
Automatic hotbar refill
The selected hotbar slot is refilled with a matching stack as soon as its current stack is depleted.
Stackable items only
The refill applies to stackable items such as blocks and food, leaving tools and other unstackable items alone.
Inventory search
The mod looks through the inventory for a matching item and pulls it directly into the hotbar.
Instant refill
The swap happens without a delay or a menu, so gameplay continues without interruption.
Protection from accidental drops
A refill does not drop items on the ground, and it stays out of the way when other screens are open.
Compatibility
Latest build for each game version and loader.
Only full game releases are shown. This mod publishes no snapshot builds.
Use cases
Who it’s for: Players on Fabric who place blocks or use food in quantity and want a hotbar slot to stay filled. The mod is client-side only, so it runs in single-player and on the client of a multiplayer session without any server installation.
How it compares
Smart Refill is a Fabric client-side mod released under the MIT License and not open source, with files for 1.21.4 – 1.21.11. Hotbar Inventory Transfer is a Fabric client-side mod released under the CC0 1.0 Universal license and open source, covering 1.21 – 26.2. Smart Inventory Sorter is a Fabric server-side mod under All rights reserved, not open source, for 1.21 – 26.3, so it does not touch the hotbar refill at all.
| Mod | Loaders | Game versions | Environment | Updated |
|---|---|---|---|---|
| Smart Stack Refiller | Fabric | 1.21.11 – 26.1.2 | Client-side only | 2026-05-07 |
| Smart Refill | Fabric | 1.21.4 – 1.21.11 | Client-side only | 2026-09-29 |
| Hotbar Inventory Transfer | Fabric | 1.21 – 26.2 | Client-side only | 2026-07-18 |
| Smart Inventory Sorter | Fabric | 1.21 – 26.3 | Server-side only | 2026-10-14 |
Questions
Does Smart Stack Refiller need Fabric API?
Does Smart Stack Refiller have to be installed on the server?
Which game versions does Smart Stack Refiller support?
Does Smart Stack Refiller refill tools?
In the catalog
Smart Stack Refiller is one of 8,016 Management mods on ModsFinder, and one of 5,930 Management mods for Fabric. 15,189 mods support Minecraft 26.1.2.
More from FluxFallen
Similar mods
What the author says
Smart Stack Refiller automatically refills your selected hotbar slot with matching items when a stack runs out. It’s lightweight, client-side, and designed to feel completely natural during gameplay. No setup required. Just install and play.
Official listing
- Modrinth page
- modrinth.com/mod/smart-stack-refiller
- Owner
- FluxFallen
- Published
- 2026-03-25
- Updated on Modrinth
- 2026-05-07
- Facts verified
- 2026-10-15