Cpack
Run .cpack and .mcfunction scripts per-world with wait , call , and zero-overhead pre-parsing — just like mcfunction, but better.
- Loaders
- Fabric
- Downloads on Modrinth
- 71
- Followers on Modrinth
- 0
- version
- 1
- Updated
- July 19, 2026Jul 19
- Published
- in 2026
At a glance
Install on the server only; players don't need it
Cpack
A Fabric mod for Minecraft 1.21.11+ that lets you run .cpack and .mcfunction files as scripted command sequences — with wait, call, and full tab-completion support.
Made by Westires
What is Cpack?
Cpack works just like .mcfunction files, but stored per-world and with extra arguments (wait, call). You write plain command scripts, load them into your world, and run them with /cp run. All files are pre-parsed on world load — zero overhead at runtime.
File Location
Scripts are stored inside your world folder, not the global config:
saves/<WorldName>/cpack/<namespace>/<your_script>.cpack
saves/<WorldName>/cpack/<namespace>/subfolder/<your_script>.mcfunction- `
is any folder name you choose (e.g.myproject,demo`) - Subfolders are supported at any depth
- Both
.cpackand.mcfunctionextensions are supported
Script Format
Identical to .mcfunction — one command per line. Comment lines starting with # are ignored.
# This is a comment
say Hello!
particle minecraft:end_rod ~ ~ ~ 0.5 0.5 0.5 0.1 20 normal
wait 10 tick
say 10 ticks later!
wait 2 second
call myproject:effects/firework.cpackExtra Arguments
| Argument | Example | Description |
|---|---|---|
| `wait tick` | wait 5 tick | Waits n ticks before executing the next line |
| `wait second` | wait 2 second | Waits n seconds (n × 20 ticks) before the next line |
call <namespace:path> | call demo:intro.cpack | Runs another cpack/mcfunction file inline |
Note:
waitsuspends only the current script — the server keeps running normally. Multiple scripts can run in parallel.
Commands
All commands require operator level 2 (gamemaster) except /cp list.
| Command | Description |
|---|---|
/cp | Shows the command list |
/cp run <namespace:file> | Runs a cpack/mcfunction file |
/cp stop <all|namespace:file> | Stops a running script (or all scripts) immediately |
/cp list [page] | Lists all loaded files with their status |
/cp disable <namespace:file> | Disables a file (prevents it from running) |
/cp enable <namespace:file> | Re-enables a disabled file |
/cp reload <all|namespace:file> | Reloads files from disk and re-parses them |
All arguments support tab completion — loaded file names appear automatically.
Using inside /execute
/execute positioned ~ ~1 ~ run cp run demo:frames/frame_000.cpackExample
File: saves/MyWorld/cpack/demo/fireworks.cpack
# Launch 3 firework bursts with delays
particle minecraft:firework_rocket ~ ~1 ~ 0.5 0.5 0.5 0.05 30 normal
wait 10 tick
particle minecraft:firework_rocket ~ ~1 ~ 0.5 0.5 0.5 0.05 30 normal
wait 10 tick
particle minecraft:firework_rocket ~ ~1 ~ 0.5 0.5 0.5 0.05 30 normal
say Fireworks done!Run it:
/cp run demo:fireworks.cpackPerformance
- All files are pre-parsed on world load using Brigadier's parser — just like vanilla
.mcfunction - At runtime, only
dispatcher.execute()is called — no re-parsing - Command feedback (chat messages from commands like
particle) is suppressed by default, matching mcfunction behavior - Multiple scripts run in parallel with no artificial limits
Requirements
- Minecraft 1.21.11
- Fabric Loader 0.18.1+
- Fabric API 0.141.2+1.21.11
Installation
- Install Fabric
- Download Fabric API for 1.21.11
- Drop
cpack-1.0.0.jarinto your.minecraft/mods/folder - Launch the game and open a world
- Create scripts in `saves//cpack//`
License
MIT — do whatever you want with it.
FAQ
How to install Cpack?
Install Fabric for your Minecraft version, download Cpack for the same version and loader, put the file into the mods folder and launch the game with the loader profile.
Which Minecraft versions does Cpack support?
Cpack has builds for Minecraft 1.21.11.
Is Cpack needed on the server?
Server only — players don't need to install it
