What's That Slot
This mod is a simple utility that allows you to query which items can be placed in a specific slot by holding down Left-Alt. The mod supports both Forge and Fabric- make sure to select the right file!
This is particularly useful in modded environments where it may not be clear what items can be placed in a modded GUI.
Relevant items can also be quickly transferred from your inventory by clicking on them in the query window:
This mod works client-only, so it does not need to be installed on the server to run!
- Edition: Minecraft Java
- File type: .jar
- Minecraft versions listed: 1.21.5, 1.21.4, 1.21
- How to install: Install the matching mod loader (Forge, Fabric or NeoForge) for your Minecraft version. → Download the .jar. → Put it in the .minecraft/mods folder and launch that loader profile.
- Where to get it: Opens on CurseForge — not every file is mirrored on our own servers.
Install steps are the general flow for this file type — How to install Minecraft Java mods & modpacks walks through it step by step.
What's That Slot? is a free Minecraft Java mod. Compatible with Minecraft 1.21.5, 1.21.4, 1.21, 1.21.1 and newer. Downloaded 2,628,002 times (via CurseForge). Download it and open it directly in the game.