
Modrinth · Minecraft mod
XD's Library
XDPXI's library for numerous tasks.
Quick answer
Which XD's Library release matches 1.21.6?
XD's Library 7.2.1-fabric-1.21.8 targets 1.21.6, 1.21.7, 1.21.8 with Fabric, Quilt. Installation on the client is optional. Installation on the dedicated server is optional. No extra mods listed for this file.
Where it goes
Is XD's Library required on the client, server, or both?
Installation on the client is optional. Installation on the dedicated server is optional.
The source marks this as usable on both the client and server.
What else does XD's Library 7.2.1-fabric-1.21.8 need?
7.2.1-fabric-1.21.8 on 1.21.6. Every mod below is checked against that same setup.
This file does not list any required mods. Do not add a library just because a different file uses it.
This file does not list any required or optional mods.
Before you install it
Add XD's Library without breaking your instance.
Built for XD's Library 7.2.1-fabric-1.21.8 on 1.21.6. Pick another file and the loader, install side or required mods may change.
- 01
Stick to this file
Use 7.2.1-fabric-1.21.8. It targets 1.21.6, 1.21.7, 1.21.8 with Fabric, Quilt; another release may have different loader, side or dependency requirements.
- 02
Bring the mods it needs
This file does not list any required mods. Do not add a library just because a different file uses it.
- 03
Put it on the correct side
Installation on the client is optional. Installation on the dedicated server is optional.
- 04
Pick the file you checked
Use the “Get this file” button beside 7.2.1-fabric-1.21.8. It opens that exact file at the source.
About this project
What does XD's Library add?
Have you ever wanted your own Minecraft server but didn't know where to start? NeyHost makes it easy to create a server for a variety of use cases without needing any technical experience. Get started today and use my code XDPXI for 30% off your first month!

A unified modding & plugin library for every Minecraft platform. Write once, deploy everywhere.
XD's Library is the essential toolkit for developers building mods and plugins across Fabric, Forge, NeoForge, Bukkit, Spigot, BungeeCord, and Velocity. Stop duplicating code, just use a single API that just works on every platform.

📦 Multi-Platform in One Dependency
Support Fabric, Forge, NeoForge, Bukkit, Spigot, BungeeCord, and Velocity from a single codebase. No more platform-specific branches. XDLib abstracts loader differences so you can focus on building.
🔄 Stable API Versions
Version 3, 6, 7, and beyond, all ships alongside each other. Your dependencies never break. Upgrade when you're ready, not when you have to.
⚡ Built-In Utilities
Window management, config parsing, logging, and more are baked in. Stop reinventing the wheel on every project.
🛠️ Production-Ready
Used in real mods and plugins across communities. Published to Maven and Modrinth with full versioning and support for multiple Minecraft release cycles.

For Mod/Plugin Developers
Add XD's Library as a dependency in your project and start using its APIs. Full documentation and examples are available at: docs.xdpxi.dev
Download from:
Building from Source
# Clone the repository
git clone https://github.com/XDPXI/XDLib
cd XDLib
# Build the mod
.\build.ps1
Compiled artifacts will be in build/libs/.
Project description from Modrinth.
Pick your setup
XD's Library by Minecraft version and loader
Choose the version and loader you play, then open the matching release.
26.1.2
4 loader builds26.1.1
4 loader builds26.1
4 loader builds1.21.11
4 loader builds1.21.10
4 loader builds1.21.9
4 loader builds1.21.8
4 loader builds1.21.7
4 loader builds1.21.6
4 loader builds1.21.5
1 loader build1.21.4
4 loader buildsShowing the newest 12 of 83 game versions. Older files are in the list below.
Check the dependencies, then try the file in a copied instance before changing a world you care about.
Recent files
XD's Library versions and loaders
7.2.1-fabric-1.21.8
xdlib-fabric-1.21.8-7.2.1.jar
14 Aug 2026
7.2.1-neo-1.21.8
xdlib-neoforge-1.21.8-7.2.1.jar
14 Aug 2026
7.2.0-fabric-1.21.8
xdlib-fabric-1.21.8-7.2.0.jar
8 Aug 2026
7.2.0-neo-1.21.8
xdlib-neoforge-1.21.8-7.2.0.jar
8 Aug 2026
7.1.0-fabric-1.21.8
xdlib-fabric-1.21.8-7.1.0.jar
8 Aug 2026
7.1.0-neo-1.21.8
xdlib-neoforge-1.21.8-7.1.0.jar
8 Aug 2026
7.1.0-bukkit
xdlib-bukkit-7.1.0.jar
8 Aug 2026
7.1.0-velo
xdlib-velocity-7.1.0.jar
8 Aug 2026
7.1.0-bungee
xdlib-bungeecord-7.1.0.jar
8 Aug 2026
7.0.5-fabric-1.21.8
xdlib-fabric-1.21.8-7.0.5.jar
30 Jun 2026
7.0.5-neo-1.21.8
xdlib-neoforge-1.21.8-7.0.5.jar
30 Jun 2026
7.0.5-bukkit
xdlib-bukkit-7.0.5.jar
30 Jun 2026
Looking for an older file? The official Modrinth project page is in Resources.