Cotton Scripting API: Run JavaScript & Python in Minecraft Data Packs

Discover how the Cotton Scripting API for Minecraft lets you run JavaScript, Python, Lua, and more from data packs on Fabric servers. Learn how to install and script with ease.

Download cotton scripting for Minecraft 1.14.1, 1.14

Original name: cotton scripting

Minecraft: 1.14, 1.14.1

Loaders: Forge

FileVersionLoaderSize
cotton-scripting-1.0.0+1.14-SNAPSHOT.jar1.14Forge233 КБDownload
cotton-scripting-1.1.0+1.14.jar1.14Forge248 КБDownload
cotton-scripting-1.2.0+1.14.jar1.14.1Forge250 КБDownload

Cotton Scripting API

Minecraft modding has always been about pushing boundaries, and the Cotton Scripting API takes that creativity to a whole new level. This powerful add-on for Fabric servers allows you to execute scripts written in popular languages like JavaScript, Python, Lua, and Ruby directly from your data packs. If you have ever wanted to bring the flexibility of real programming languages into your Minecraft world without building a full mod, this is the tool you have been waiting for.

What Is the Cotton Scripting API?

At its core, the Cotton Scripting API is a bridge between Minecraft's data pack system and external scripting languages. Normally, data packs rely on Minecraft's built-in command syntax and functions, which can be limiting for complex logic. With this API, you can write server-side scripts that interact with the game world, entities, and players using familiar programming languages. The API itself does not include interpreters for every language, but it provides the framework to run them. JavaScript support is available out of the box because Java includes a built-in JavaScript engine, and additional interpreters for Python, Lua, Ruby, and others can be added through companion mods.

Key Features and Benefits

  • Multi-language support: Write scripts in JavaScript, Python, Lua, Ruby, and more. The environment is extensible, so the list of supported languages will grow as interpreter add-ons are released.
  • Seamless data pack integration: Place your scripts inside a data pack under the data/<namespace>/scripts folder, reload the server, and they are ready to call.
  • In-game command execution: Use the /script command as an operator or from a command block to trigger your scripts instantly.
  • Server-side only: All scripts run on the server, so players do not need to install anything extra. This keeps the experience lightweight and secure.
  • Fabric compatibility: Designed exclusively for the Fabric mod loader, ensuring smooth performance and easy integration with other Fabric mods.

Supported Minecraft Versions and Loader

The Cotton Scripting API is built for the Fabric mod loader and works with modern Minecraft releases. While the exact version range may vary with each update, you can typically find builds for Minecraft 1.19, 1.20, and the latest 1.21 snapshots. Always check the mod's official page for the most recent supported versions. Because it relies on Fabric, you will need to have the Fabric Loader and Fabric API installed on your server before adding Cotton Scripting API.

How to Install Cotton Scripting API

Getting started is straightforward. Follow these steps to add scripting capabilities to your Fabric server:

  • Step 1: Ensure you have a Fabric server set up with the Fabric API mod installed. If you are using a launcher like foxygame.net, you can easily create a Fabric profile and manage your mods from a unified dashboard. The foxygame.net launcher even offers one-click installation for Cotton Scripting API, automatically handling version compatibility and updates so you can focus on writing scripts.
  • Step 2: Download Cotton Scripting API from a trusted source. Place the JAR file into your server's mods folder.
  • Step 3: If you want to use languages other than JavaScript, download the corresponding interpreter add-on mods and add them to the mods folder as well.
  • Step 4: Restart your server. The API will now be active, and you can begin adding scripts to your data packs.

Writing Your First Script

Once the Cotton Scripting API is installed, creating a script is as simple as writing a text file. For example, to make a JavaScript script that broadcasts a message to all players, create a file named hello.js inside your data pack's scripts folder. The content might look like this:

// hello.js
server.broadcast("Hello from JavaScript!");

After saving the file, run /reload on the server, then execute /script run hello to see the message appear in chat. The API automatically detects scripts in the scripts directory and makes them available via the /script command. You can pass arguments, return values, and even interact with the world using the provided server-side objects.

Expanding with Additional Languages

While JavaScript is immediately usable, the real power of Cotton Scripting API lies in its extensibility. The developers have designed the system to be interpreter-agnostic, meaning the community can create add-on mods that plug in support for Python, Lua, Ruby, and other languages. Several interpreter add-ons are already in the works, and once they are released, you will be able to write scripts in your favorite language without any extra configuration. Simply download the interpreter mod, place it in your mods folder, and start writing scripts with the corresponding file extension.

Why Choose Cotton Scripting API for Your Server?

If you are running a Fabric server and want to add dynamic, scripted content without the overhead of full mod development, this API is a game-changer. It allows you to create custom events, automate tasks, and build interactive experiences using languages you already know. The /script command makes it easy to test and debug, and because everything lives inside data packs, you can share your creations with other server owners effortlessly. Whether you are a seasoned programmer or just starting to explore scripting, the Cotton Scripting API for Minecraft opens up a world of possibilities.

Getting the Most Out of Cotton Scripting API

To truly master this tool, take advantage of the comprehensive wiki provided by the developers. It covers advanced topics like script lifecycle, available server objects, and best practices for performance. Remember that scripts run on the server thread, so heavy computations should be handled carefully to avoid lag. With a bit of practice, you will be able to replace complex command block contraptions with clean, readable code that is easier to maintain and extend.

For those who want a hassle-free setup, the foxygame.net launcher includes Cotton Scripting API in its curated add-on catalog, allowing you to install and update the mod with a single click while ensuring perfect version compatibility with your Fabric profile. This integration saves time and eliminates the guesswork of manual downloads.

Conclusion

The Cotton Scripting API is a must-have for any Fabric server owner who wants to elevate their data packs with real scripting power. By supporting multiple languages and offering a simple, command-based interface, it bridges the gap between vanilla functions and full mod development. Whether you download Cotton Scripting API manually or use a launcher to streamline the process, you will be unlocking a new dimension of creativity for your Minecraft world. Start scripting today and see what you can build.