CrossServerCore
Cross Server Core aka CSC
What is Cross Server Core ?
Cross Server Core is a minecraft library that enables cross server communication between minecraft servers. It uses RabbitMQ for reliable direct data transfer and MongoDB for delayed data transfer and data storage. It really start to be useful when you have these multiple minecraft servers connected on a proxy.
What is it used for ?
In my case I use it to enable player transition between different server instances. I can with this mod transfer player inventories, states. I can also create a home and tp system between servers. I use it to synchronize other mods like FTBTeams, FTBQuests, Waystones
- Edition: Minecraft Java
- File type: .jar
- Minecraft versions listed: 1.19.2, 1.19.3, 1.19.4
- How to install: Install the matching mod loader (Forge, Fabric or NeoForge) for your Minecraft version. → Download the .jar. → Put it in the .minecraft/mods folder and launch that loader profile.
- Where to get it: Opens on Modrinth — not every file is mirrored on our own servers.
Install steps are the general flow for this file type — How to install Minecraft Java mods & modpacks walks through it step by step.
- Ships as cross-server-core-2.0.0.jar — drop this file into the mods folder
- Download size: 2.9 MB
- Download link checked 21 Aug 2026 — working
These come from our own check of the pack file, not from the source page.