Rattlebox
Java mod listed for Minecraft 1.21. Downloads from the MC Java Mods app on Android.
Look at a chest, barrel, shulker, or ender inventory to preview what’s inside, then search your indexed stash and drop a waypoint on the hit. Live in…
⬇ Download on Modrinth
Rattlebox : Know before you open
Shake the box. Skip the rummage.
Rattlebox is a preview-first client utility for storage. Look at a chest or barrel and see what’s inside before you click. Hover a shulker or ender inventory for a content grid. When you’ve lost something in the base, open search, find the item across all of your storage, and follow a waypoint back to the hit.
How modes work
| Mode | Description | What you get |
|---|---|---|
| LOCAL | Singleplayer / integrated server | Live look-at preview and indexing from the local world |
| Multiplayer with server mod | Multiplayer with Rattlebox on the server (successful handshake) | Live sync within supported range |
| Multiplayer without server mod | Multiplayer without the server mod, or after handshake timeout | Index by opening containers; search uses what you last saw |
On a normal SMP that doesn’t install Rattlebox server-side, expect CACHED: open the chest once, close it, then search finds what you remembered. That’s intentional, not a broken live sync.
Controls
- H — open stash search
- J — toggle look-at / overlay preview
Keybinds are remappable in Controls. You can change the mod setting by pressing H and clicking on gear icon from top right
Requirements
- Fabric builds need Fabric API for the matching Minecraft version
Supported for 1.0.0
| Minecraft | Fabric | NeoForge |
|---|---|---|
| 26.2 | Yes | Yes |
| 1.21.1 | Yes | — |
Honest notes
- Preview and search cover supported storage (chests, barrels, shulkers, ender, and similar container items as implemented), not every block in the game.
- CACHED multiplayer only knows containers you’ve opened (or otherwise indexed) since the cache was built.
- Rattlebox pairs fine with general HUDs like Jade; it does not replace them.
- Edition: Minecraft Java
- File type: .jar
- Minecraft versions listed: 1.21, 1.21.1, 1.21.2
- 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 Modrinth — 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.
- Ships as rattlebox-fabric-1.21-1.0.0.jar — drop this file into the mods folder
- Download size: 727 KB
- Download link checked 4 Oct 2026 — working
These come from our own check of the pack file, not from the source page.