Cobble

Cobble is a Python-like language that compiles to Minecraft Java Edition data packs. You write functions, events, conditions, loops, and resources in .cbl files, and the compiler turns them into .mcfunction files, function tags, and JSON resources.

from stdlib import event

def on_load():
    /tellraw @a {"text":"Cobble loaded","color":"green"}

def reward(player, amount):
    /give {player} minecraft:diamond {amount}

stdlib.addEventListener(event.LOAD, on_load)

Cobble targets Minecraft Java Edition 26.3 (pack format 121.0). The current crates.io release is 0.10.0. This is the nightly documentation, built from the main branch, where 0.11 is in development. What it says about 0.11, such as the per-pack <namespace>.vars objective and persist variables, may change before the release.

Where To Start

• Installation and Your First Pack set up a project and load it in a world.
• The Language Guide covers the syntax chapter by chapter.
• The Standard Library lists the built-in helpers and resource declarations.
• The CLI reference documents every command.

You can also try Cobble without installing anything in the browser compiler.

Links

• Source and issues: github.com/deveworld/cobble
• Rust library API: docs.rs/cobble-lang
• Changelog and roadmap