ModsFinder

CardBoard SharkMI Fork

by SharkMI-0x7E

CardBoard SharkMI Fork is a Fabric server library that lets Bukkit, Spigot and Paper plugins run alongside Fabric mods on one server.

FabricServer-side onlyGNU General Public License v3.0 or laterOpen source1.21.11

What it does

The fork builds on the upstream Cardboard implementation of the Bukkit, Spigot and Paper API for Fabric. Plugins from the Bukkit ecosystem can load on a Fabric server next to ordinary Fabric mods, and the cardboard command, with alias cb, groups the library's subcommands under one name. Fabric API is required.

Changes in this fork concentrate on mixin compatibility. Overwrite annotations were replaced with precise injection points using Inject, ModifyArg and Redirect, which reduces conflicts with other Fabric mods. A fix addresses server status ping conflicts with the MiniMOTD mod. Detailed conflict detection settings are described in the project's mixin conflict detection user guide.

The mod runs on the server only, so players join without installing it. It is published for 1.21.11 alone, with build 2026.10.2 as the latest Fabric file, and the code is released under the GNU General Public License v3.0 or later as open source. Source code is available in the project repository.

Key features

  1. Bukkit plugin support

    Plugins written for Bukkit, Spigot and Paper can run on a Fabric server through the Cardboard API layer.

  2. Mixin conflict reduction

    Overwrite annotations were replaced with Inject, ModifyArg and Redirect injections to avoid clashes with other Fabric mods.

  3. Status ping fix

    Server status ping conflicts with the MiniMOTD mod were fixed in this fork.

  4. Single cardboard command

    The cardboard command, also available as cb, groups the library's subcommands under one entry point.

Compatibility

Latest build for each game version and loader.

1.21.112026.10.2
ReleaseBetaAlphaNot available

Only full game releases are shown. This mod publishes no snapshot builds.

Requirements

Dependencies declared by the latest file for each loader.

Required 1

Fabric APILightweight and modular API providing common hooks and intercompatibility measures utilized by mods using the Fabric toolchain.
Required

Questions

Does CardBoard SharkMI Fork need Fabric API?

Yes. Fabric API is a required dependency and must be installed on the server next to this fork.

Do players need to install CardBoard SharkMI Fork?

No. The mod is server-side only, so only the server needs it and players join without installing anything.

Which game versions does CardBoard SharkMI Fork support?

The fork targets 1.21.11 only. The latest Fabric file is build 2026.10.2 for 1.21.11, published 2026-10-13.

How does this fork differ from the upstream Cardboard project?

Most of the additional code was written in this repository and checked with builds and basic smoke tests before release. It adds mixin compatibility fixes on top of the upstream Cardboard implementation.

In the catalog

CardBoard SharkMI Fork is one of 3,514 Library mods on ModsFinder, and one of 2,348 Library mods for Fabric. 19,862 mods support Minecraft 1.21.11.

Library mods3,514Fabric modsMods for 1.21.1119,862

Similar mods

Fabric API1.14 – 26.3Cloth Config API1.14 – 26.3YetAnotherConfigLib (YACL)1.19 – 26.3Architectury API1.16.5 – 26.3Just Enough Items (JEI)1.8 – 26.3Geckolib1.12.2 – 26.3

What the author says

This fork exists for a plain reason: I hit problems on my own server that upstream had not fixed yet, so I fixed them. What is published here is that work, shared in case someone else runs into the same thing. This is not meant to be "a more complete Cardboard". The upstream project is the real one; this is a patch…
SharkMI-0x7E, on the Modrinth page

Official listing

Owner
SharkMI-0x7E
Published
2026-05-18
Updated on Modrinth
2026-10-13
Facts verified
2026-10-15

Tags

LibraryUtility
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