ConcreteMod
by NightDevMC
ConcreteMod is a Fabric client-side tool for viewing the tags that blocks and items belong to, displayed directly in the game.
What it does
ConcreteMod lets players inspect the tags attached to blocks and items without leaving the game. The information is shown in-game as the player looks at or handles an entry, which makes it possible to check tag membership while building or testing. Because it runs only on the client, a server does not need it and players can join a server without installing anything.
The mod is aimed at people who work with tags and data: mod developers checking their own content, datapack creators verifying custom tag files, and map makers who want to see how a tag resolves. It has a small footprint, so it is meant to add little overhead while it is active. The author describes it as a debugging aid for custom content rather than a gameplay addition.
Installation requires Fabric Loader. Files are published for Fabric only, covering the 1.21.1 – 1.21.11 range with 11 release versions, and the latest file is 1.0.0 for 1.21.11, released on 2025-12-24 on the beta channel. The code is released under the MIT License and is not open source.
Key features
In-game tag viewing
Tags attached to blocks and items can be read directly in the game, without external tools or data dumps.
Block and item coverage
The display covers both blocks and items, so the same check works for either kind of entry.
Light footprint
The mod is kept small and is described as having minimal impact on performance while active.
Debugging custom content
Tag views help confirm that mod content and datapack entries are assigned to the intended tags.
Gallery
Compatibility
Latest build for each game version and loader.
1.21.x11 of 11 versions with builds
Only full game releases are shown. This mod publishes no snapshot builds.
Use cases
Mod development
Developers can confirm that their blocks and items appear in the tags they were meant to join.
Datapack authoring
Datapack creators can check the effect of custom tag files on blocks and items in a running world.
Map making
Map makers can inspect how vanilla and custom tags are applied while building an adventure map.
Exploring tags
Anyone curious about how Minecraft organizes its tags can browse them in-game.
Who it’s for: The mod suits mod developers, datapack creators and map makers who need to see tag membership for blocks and items. Players who only want to play without checking data have no need for it, and it only has to be installed on the client.
Questions
Does ConcreteMod need to be installed on the server?
Which loader does ConcreteMod use?
Which game versions are supported?
Official listing
- Modrinth page
- modrinth.com/mod/concretemod
- Owner
- NightDevMC
- Published
- 2025-12-24
- Updated on Modrinth
- 2025-12-24
- Facts verified
- 2026-10-15