Add Fabric mods

Know where a mod belongs#

Server-only mods change server logic or performance and do not need a player download. Client-only mods change rendering or controls and must not be placed on a dedicated server. Both-side mods add shared content or networking and need the same compatible version on server and clients.

Fabric Loader loads the mods. Fabric API is a common library many mods call. Other dependencies are separate mods one project requires. Datapacks use Minecraft’s built-in data system. Bukkit/Paper plugins do not run on a plain Fabric server.

Sodium is mainly a client rendering optimization. It normally belongs on each player’s computer, not the dedicated server.

Choose carefully#

Use Modrinth ↗ or CurseForge ↗ and prefer the project’s official page. Avoid random rehosting sites: they may serve old, modified or malicious files.

Common server-side optimization projects include Lithium, FerriteCore, Krypton, ServerCore and Alternate Current. Chunky or Fabric-compatible pregeneration tools may help exploration. Verify the exact Minecraft version, Fabric support, environment and dependencies on each project page; none is compatible with every release.

Upload a mod safely#

1. 1
   Create a backup, then stop the server.
2. 2
   Download the correct Fabric .jar for the exact Minecraft version.
3. 3
   Read the Requirements/Dependencies section.
4. 4
   In Crafty’s file manager, open the server’s mods folder.
5. 5
   Upload the .jar without unzipping it.
6. 6
   Start the server and read the console.
7. 7
   Join once and test the mod’s feature.
8. 8
   Add only a few more mods before testing again.

The official Fabric mod guide ↗ warns that even nearby patch releases can be incompatible and recommends trusted sources.