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Lasso Storage Addon
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Lasso Storage Addon

v1.0.0 1.20.1 Forge Mob Lassos ≥ 8.0.0 15 KB · MIT

A Forge addon for Mob Lassos (by Fuzs) that automatically backs up every captured mob's full NBT data to a folder in your Minecraft directory — so mobs inside lassos can be moved between worlds, servers, or shared with other players.

Built with Book of Dragons in mind — since each dragon's genetics are essentially unique, losing one to a world transfer or server wipe is genuinely irreplaceable. This mod (hopefully) makes sure that never happens.

⤓ Download Mod
lasso-storage-addon-1.20.1-1.0.0.jar
Drop in your mods/ folder
How It Works

Every time you capture a mob in any lasso, its complete entity data is silently written to .minecraft/lasso_storage/ as a plain-text .snbt file. When you release the mob back into the world, the file is automatically cleaned up.

▸ The folder only ever contains mobs that are currently sitting inside a lasso. Released mobs leave no trace.

Because the files are plain text, they can be copied, shared, or even pasted into a Discord message — anyone who receives the file can import it into their own game and get the exact same mob, full genetics and all.

Commands

Manual save/load controls

All commands require permission level 2 (operator).

/lassostorage export
Saves the mob inside the lasso you're currently holding to a file, using the entity type and current timestamp as the filename.
Usage — hold a filled lasso, then run:
/lassostorage export
Creates a file like dragon_2025-04-05_12-30-00.snbt in lasso_storage/.
/lassostorage export <filename>
Same as above, but lets you choose the filename yourself.
Usage — hold a filled lasso, then run:
/lassostorage export mydragon
Creates lasso_storage/mydragon.snbt. Useful before releasing a mob you want to keep a permanent record of, since the auto-save file gets deleted when the mob is released.
/lassostorage import <filename>
Loads a saved mob into the empty lasso you're currently holding. Supports tab-completion — press Tab after typing import to see all available files.
Usage — hold an empty lasso, then run:
/lassostorage import mydragon
The lasso will now contain the saved mob with all its data fully restored.
Note: the lasso must be empty. If it already contains a mob, the command refuses to overwrite it.
/lassostorage list
Lists all .snbt files currently in your lasso_storage/ folder.
Usage:
/lassostorage list
Example output:
[LassoStorage] Saved lassos (3): dragon_2025-04-05_12-30-00 mydragon rare_cow
Walkthroughs

Moving a mob between worlds or servers

  1. Capture the mob in a lasso — the file is created automatically.
  2. Run /lassostorage export mydragon to give it a recognizable name (optional but recommended).
  3. Find the file in lasso_storage/ and copy it to the same folder on the destination instance. On a server, this folder sits next to the world/ folder in the server directory.
  4. In the destination world, hold an empty lasso and run /lassostorage import mydragon.

Sharing a mob with another player

Because .snbt files are plain text, you can share them like any other file — upload to a file host, pastebin, or Discord, and have the other player drop it into their own lasso_storage/ folder. They can then import it with /lassostorage import <filename> and get the exact same mob.

◆ This works for any mob, but it's especially useful for Book of Dragons, where a dragon's genetics are unique and nearly impossible to replicate naturally.
File Format

Files use SNBT — the human-readable text representation of Minecraft NBT data. They can be opened and edited in any text editor. The full lasso item tag is stored, including all entity data, so nothing is lost in the transfer.

▸ Pair this with the SNBT Editor to re-assign ownership before sharing — that way the receiving player becomes the new owner instead of inheriting yours.
Requirements

What you need to install

This is an addon — it depends on Mob Lassos, which depends on PuzzlesLib.

Minecraft
1.20.1
Forge
47.x
Mob Lassos
≥ 8.0.0
PuzzlesLib
≥ 8.0.0
Get It

Ready to never lose a dragon again.

⤓ Download Mod