Cardboard is an implementation of the popular Bukkit/Spigot/Paper Modding API for FabricMC. This mod lets you use plugins that are made for Bukkit and it's derivatives (Spigot & Paper) on a Fabric modded server.
Fabric version chart:
| Support | Minecraft | Git Branch | Dev Status |
|---|---|---|---|
| ✅ | Fabric 26.2 | ver/26.2 | Active |
| ✅ | Fabric 26.1.2 | ver/26.1 | Low |
| ✅ | Fabric 1.21.11 | ver/1.21.11 | Low |
| ✅ | Fabric 1.21.1 | ver/1.21 | Low |
| ❌ | <= 1.20 |
See Supported Versions for more details. & View Downloads
Requires JDK 25 (auto-provisioned by the Gradle toolchain resolver) and Java 21+ at runtime.
./gradlew build
The mod jar is produced at build/libs/Cardboard-<version>.jar. Drop it into a
Fabric server's mods/ folder alongside Fabric API
and iCommonLib; Bukkit plugins then go in plugins/.
Minecraft 26.2 moved the entity and block-entity constants out of their type
classes (EntityType.X -> EntityTypes.X, BlockEntityType.X ->
BlockEntityTypes.X), stripped the colour metadata from ChatFormatting in
favour of world.scores.TeamColor, and ships Adventure 5. Cardboard on this
branch targets Paper-API 26.2.build.110-stable and Adventure 5.2.0.
This repository is derived from CardboardPowered/cardboard
and carries its history and license. The ver/26.2 branch adds Minecraft 26.2 support.
We inherit the license from Paper. See Paper's License for full details. SrgLib is also licensed under MIT.
- BukkitTeam, Spigot, and Paper for their work on the API.
- Glowstone for the library loader.
- md_5's SpecialSource, SrgLib by Techcable & Orion, MinecraftMapping by Phase
- Contributors to Cardboard
This project is partnered with ApexHosting! Join our test server, cardboardmod.apexmc.co:25666, or get a Minecraft server by clicking on the banner below:

