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Nucleus v2

For version 1, see the sponge-api/7 branch.

Licence: MIT (except for the Nucleus logo, which is all rights reserved)

Nucleus is a Sponge plugin that forms a solid base for your server, providing essential commands, events, and other tidbits that you might need. Extremely configurable, only loading up the commands and modules you want (and providing a way for plugins to disable modules that they replace the functionality of), and providing a simple and rich API, Nucleus is an elite plugin for providing simple server tasks, and an essential addition to your server!

Nucleus is being actively developed for Sponge API 7.


Are you a talented programmer wanting to contribute some code? Perhaps someone who likes to write documentation? Do you have a bug that you want to report? Or perhaps you have an idea for a cool new idea that would fit in with Nucleus? We'd be grateful for your contributions - we're an open community that appreciates any help you are willing to give!

  • Read our guidelines.
  • Open an issue if you have a bug to report, or a pull request with your changes.

Getting and Building Nucleus

To get a copy of the Nucleus source, ensure you have Git installed, and run the following commands from a command prompt or terminal:

  1. git clone
  2. cd Nucleus
  3. cp scripts/pre-commit .git/hooks

To build Nucleus, navigate to the source directory and run either:

  • ./gradlew build on UNIX and UNIX like systems (including macOS and Linux)
  • gradlew build on Windows systems

You will find the compiled JAR which will be named like Nucleus-[version]-plugin.jar in output/. A corresponding API and javadocs jar will also exist.

Building against the Nucleus API

Nucleus is available via a Maven repository.

  • Repo:
  • Group ID: io.github.nucleuspowered
  • Artifact Name: nucleus-api

The versioning follows version[-SNAPSHOT|-ALPHAn|-BETAn|-RCn], where n is an integer. Add the -SNAPSHOT section for the latest snapshot.

You can also get Nucleus as a whole this way, but internals may break at any time. The API is guaranteed to be more stable.

You can also use JitPack as a repository, if you prefer.

Third Party Libraries

The compiled Nucleus plugin includes the following libraries (with their licences in parentheses):

  • QuickStart Module Loader (MIT)

See for more details.