Sticky Hopper - Server Side Only
by SoGCuicui
Sticky Hopper is a Fabric storage mod that makes hoppers keep one item in each inventory slot instead of emptying completely.
What it does
Hoppers normally empty fully, but a Sticky Hopper holds back a single item in every inventory slot. Comparators reading its contents then ignore those lone items, which makes the block usable as a simple, small filter that can be sliced into a line of storage. Items are counted once a second copy arrives, so a slot can hold 2 of 64 or 2 of 16 for a stack type with a lower maximum, and stacks that cannot stack are always ignored.
The mod is server-side only, so only the server needs it and players join without installing anything. It requires Fabric API on Fabric. The crafting recipe for a Sticky Hopper uses a Honey Bottle placed on a hopper, and a custom name on the block changes how it appears. Files target 1.19 – 1.19.1, with 4.1-ServerSideOnly-1.19.1 as the latest build, and the code is CC0 1.0 Universal, so it is open source.
Key features
Single items kept in slots
A Sticky Hopper retains one item in each inventory slot rather than emptying the slot completely.
Comparator filter
Comparators read the contents of a Sticky Hopper and ignore single items, so the block works as a small sliceable filter.
Honey Bottle recipe
The block is crafted by placing a Honey Bottle on a hopper, and honey is consumed and absorbed eight ticks later.
Transfer speed
Transfers take eight game ticks, the same as vanilla hoppers, but a line of Sticky Hoppers only passes one item until a second matching item arrives.
Compatibility
Latest build for each game version and loader.
Only full game releases are shown. This mod publishes no snapshot builds.
Use cases
Simple filter lines
Sticky Hoppers placed in a row let a comparator read which item types are present, with no extra filter blocks.
Light server load
Testing with the Carpet mod over 2500 idle Sticky Hoppers showed performance similar to vanilla hoppers.
Who it’s for: Server owners who want a storage filter without installing anything on player clients, and builders who run item sorting systems on Fabric servers.
How it compares
Wooden Hoppers is an open source Fabric mod, published for 1.16.2 – 1.20.4 under the MIT License, and it runs on client and server. Item Filter is also open source under the MIT License and runs on client and server, but it targets 1.21.1 only. Sticky Hopper stays on the server, so players need nothing installed.
| Mod | Loaders | Game versions | Environment | Updated |
|---|---|---|---|---|
| Sticky Hopper - Server Side Only | Fabric | 1.19 – 1.19.1 | Server-side only | 2022-07-29 |
| Wooden Hoppers | Fabric | 1.16.2 – 1.20.4 | Client and server | 2024-01-07 |
| Item Filter | Fabric | 1.21.1 | Client and server | 2026-05-10 |
Questions
Does a player need Sticky Hopper installed to join?
What does Sticky Hopper require?
Why does a Sticky Hopper transfer seem slow?
In the catalog
Sticky Hopper - Server Side Only is one of 4,058 Storage mods on ModsFinder, and one of 2,474 Storage mods for Fabric. 5,930 mods support Minecraft 1.19.1.
More from SoGCuicui
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What the author says
*Based on an original idea by Aurelien_Sama (FR), and its prototype coded by ShoukaSeikyo.* Sticky Hopper simply never empties completely, but retains a single item in each of its inventory slots instead. It has been designed to be used as a filter. Simple, small, sliceable, redstone-less filter!
Official listing
- Modrinth page
- modrinth.com/mod/sticky-hopper-sso
- Owner
- SoGCuicui
- Published
- 2022-07-16
- Updated on Modrinth
- 2022-07-29
- Facts verified
- 2026-10-15