Structure Item Mod
by QuImUfu
Structure Item Mod lets an item placed by right-click spawn a structure, with its position and orientation set through NBT tags on the item.
What it does
The mod adds an item that places a structure where it is used. Placement is controlled by NBT tags on the item, so a modpack creator can give players a way to spawn custom structures. Options cover the offset from the clicked block, the direction the structure faces, whether it is centred above, below or beside the clicked face, and whether it is rotated.
Placement rules are set with allow, block-list and replacement settings. A whitelist can be used in place of a blacklist for replaced blocks, and when both are given the blacklist takes precedence. Entities can be saved with the structure or left out, and non-structure voids can be filtered. The item needs Fabric API to run, and it is published for Fabric only, across 1.16.5 – 1.21.4. The code is open source under the MIT License, and the mod runs on client and server.
Key features
Right-click placement
Using the item on a block places a structure at the clicked position, with no command needed.
NBT-driven options
Offset, rotation, block rules and entity handling are all configured through tags stored on the item.
Offset and centring
The structure can be placed beside, above or below the clicked face, centred on that face.
Block and entity rules
Blacklists, whitelists, replacement and entity saving decide which blocks are replaced and which entities move with the structure.
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 1
Use cases
Modpack custom spawns
A modpack creator can hand players an item that places a chosen structure, with its placement set in the item's NBT.
Map and adventure builds
Builders can place prepared structures at exact offsets relative to the block they click.
Who it’s for: Modpack creators and map builders who want players to place custom structures from an item. The mod is for servers and clients on Fabric.
How it compares
Chat Calcus is a Fabric client-side only mod under the MIT License, published for 1.20.4 – 1.21.1, so it needs nothing on the server. MathMod is also client-side only and open source under the MIT License, but it covers only 1.21.4. Edit Player NBT is server-side only, open source under the GNU Lesser General Public License v3.0 only, and targets 1.20.1. Structure Item Mod is the only one of these that places structures.
| Mod | Loaders | Game versions | Environment | Updated |
|---|---|---|---|---|
| Structure Item Mod | Fabric | 1.16.5 – 1.21.4 | Client and server | 2025-01-05 |
| Chat Calcus | Fabric | 1.20.4 – 1.21.1 | Client-side only | 2024-10-24 |
| MathMod | Fabric | 1.21.4 | Client-side only | 2025-04-21 |
| Edit Player NBT | Fabric | 1.20.1 | Server-side only | 2023-06-19 |
Questions
Does Structure Item Mod need Fabric API?
Which game versions are supported?
Does the server need the mod?
Can the placement rules be changed?
In the catalog
Structure Item Mod is one of 36,990 Utility mods on ModsFinder, and one of 25,772 Utility mods for Fabric. 17,979 mods support Minecraft 1.21.4.
More from QuImUfu
Similar mods
What the author says
This mod is intended for modpack creators that want to give their players a possibility to spawn (custom) structures at will. The structure as well as the placement option are set via NBT-tags.
Official listing
- Modrinth page
- modrinth.com/mod/structure-item-mod-fabric
- Owner
- QuImUfu
- Published
- 2021-04-01
- Updated on Modrinth
- 2025-01-05
- Facts verified
- 2026-10-15