
Simple NBT Mod
A dead simple nbt import/export mod that works using the clipboard.
About this Mod
What is this mod?
Its a very simple 2 hour mod to enable nbt creation in 1.21.1
It is mainly intended for just importing and exporting nbt into and from minecraft. The main creational work is intended to happen fully outside minecraft with a code editor or MCStacker or so.
How do I use it?
You need farbic version 1.21.1 and fabric-api 1.21.1.
Once installed, you will have the following chat commands at your disposal
.nbt [show]where show is optional.
This will show you the nbt of the item you are currently holding..nbt copywhich copies the nbt of the item you are holding to your clipboard.`.nbt paste', which will attempt to create an item from the nbt data in your clipboard.
Note that because 1.21.1 changed a lot about how to format /give commands, it is supported, but with some annoying quirks. (Because trying to work around them would be a lot of work, and I really cannot be bothered).
If you want to use /give to create an item (for example, using MCStacker), the item you are giving yourself MUST be in a decorated pot, and the command MUST be in the following format
/give @p decorated_pot[container=[{slot:0,item:<Your NBT HERE>}]] 1
which is also the format used by MCStacker to put items into containers.
Below is a video example of how to use all these features.
If you have any questions or problems feel free to ask on my discord.
Showcase-Video
Available Versions
How to Install Simple NBT Mod on Your Server
Order Server
Order a Minecraft Java server with at least 3 GB RAM (4 GB recommended).
Set fabric Loader
In the panel under "Egg", select the fabric loader and matching Minecraft version (1.21.1).
Install Mod
Open the mod browser in the dashboard and search for "Simple NBT Mod". Click "Install" – done! Alternatively, upload the .jar via SFTP to the /mods folder.
Compatibility
Mod Loaders
Minecraft Versions
1.21.1
Server-side
✗ UnsupportedRecommended RAM
4 GB(min. 3 GB)Frequently Asked Questions
Simple NBT Mod server crashes on startup – what to do?
Most common cause: wrong fabric version or insufficient RAM. Check the server log (latest.log) for "OutOfMemoryError" or "Mixin" errors. With Mado Hosting: ensure at least 3 GB RAM is allocated and the loader matches the mod version (1.21.1). You can switch loaders with one click in the panel.
Is Simple NBT Mod compatible with fabric?
Simple NBT Mod officially supports fabric for Minecraft 1.21.1. The Mado dashboard automatically detects incompatible loader combinations.
Server lagging with Simple NBT Mod – how to optimize performance?
Recommended RAM: 4 GB (per 8 players). Use /spark profiler to check if Simple NBT Mod consumes the most tick time. Common fixes: reduce server view-distance to 8-10, install "performant" or "starlight" as supplementary mods on Forge. With Mado Hosting, your server runs on NVMe SSDs with dedicated CPU cores for minimal latency.
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Install Simple NBT Mod with just one click on your server.
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