Empty Shulker Nesting
by S1xH3arts
Empty Shulker Nesting stops empty shulker boxes from being placed inside other shulker boxes, and it only runs on the server.
What it does
Players can still put empty shulker boxes into a shulker that is not yet full, but a box that holds items cannot be placed inside another shulker. The restriction targets nested storage, the kind that can be used to create endless item loops or duplicate stacks. By blocking these loops, the mod keeps inventory counts predictable for players on survival servers and in modpacks that rely on balanced progression.
The mod is a Fabric server-side mod for Minecraft 1.21.11 and has no effect on clients. Only the server needs it installed; players join without installing anything. It is lightweight and adds no screens or configuration panels, so it works as a simple rule change rather than a new system. The code is not open source and is released under All rights reserved, and the latest Fabric file is 1.0.0, published 2026-02-11.
Key features
Blocks nested shulkers with items
A shulker box holding items cannot be placed inside another shulker, which closes off recursion exploits.
Allows empty shulker nesting
Empty shulker boxes can still be stored inside other shulkers, so unused boxes can be tidied away.
Prevents accidental item loss
Blocking nested filled boxes also stops items from being lost by placing a box inside another by mistake.
Lightweight rule change
The mod adds a single placement rule with no extra interface, aimed at keeping server performance steady.
Compatibility
Latest build for each game version and loader.
Only full game releases are shown. This mod publishes no snapshot builds.
Use cases
Survival SMP servers
Server owners can keep item storage balanced without banning shulker boxes outright.
Modpacks focused on balance
Pack makers who want storage limits enforced by the server can add the mod without changing client files.
Who it’s for: Server owners running Fabric 1.21.11 who want shulker boxes to stay usable while excluding nested item loops, and technical players who prefer clean storage.
How it compares
Copper Storage runs on both client and server and is published for 1.21.11 on Fabric, so every player installs it, under the MIT License but not open source. Functional Shulkers is also for 1.21.11 and is released under CC0 1.0 Universal, with the server required and the client optional. ShulkerBoxRecursion is open source under the MIT License and is server-side only, but its files cover 1.19.4 – 1.20.4 rather than 1.21.11.
| Mod | Loaders | Game versions | Environment | Updated |
|---|---|---|---|---|
| Empty Shulker Nesting | Fabric | 1.21.11 | Server-side only | 2026-02-11 |
| Copper Storage | Fabric | 1.21.11 | Client and server | 2026-01-05 |
| Functional Shulkers | Fabric | 1.21.11 | Server required, client optional | 2026-01-18 |
| ShulkerBoxRecursion | Fabric | 1.19.4 – 1.20.4 | Server-side only | 2024-03-28 |
Questions
Does Empty Shulker Nesting need to be installed on clients?
Can empty shulker boxes still go inside other shulkers?
Which Minecraft version does the mod support?
In the catalog
Empty Shulker Nesting 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.
More from S1xH3arts
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What the author says
Empty Shulker Nesting is a lightweight quality-of-life mod that allows shulker boxes to be stored inside other shulker boxes — but only when they’re empty. To prevent inventory abuse, recursion exploits, and accidental item loss, shulker boxes that contain items are completely blocked from being placed inside other…
Official listing
- Modrinth page
- modrinth.com/mod/empty-shulker-nesting
- Owner
- S1xH3arts
- Published
- 2026-02-11
- Updated on Modrinth
- 2026-02-11
- Facts verified
- 2026-10-15