C3 Addon SDK documentation

Published 3 Aug, 2017
196 words
<1 minute

Welcome to the Construct 3 JavaScript SDK documentation. The JavaScript SDK allows third-party developers to create new plugins, behaviors and effects for Construct 3. The Theme SDK also allows custom appearances for the Construct 3 editor. Please note not all SDK features are currently available. This documentation will be updated as new capabilities are rolled out.


Plugin SDK files


Download now 25 KB
Behavior SDK files


Download now 5 KB
Effect SDK files


Download now 1 KB
Editor theme SDK files


Download now 3 KB

The zip files contain the files for an example custom plugin, behavior or theme. The files for an addon can be zipped and renamed .c3addon to directly test it in the Construct 3 editor, via the Addon Manager.

Custom importer API sample data

The plugin SDK download includes a sample plugin using the Custom Importer API. The following sample file can be drag-and-dropped in to Construct 3 to demonstrate reading a custom format.



Download now 7 KB

Developing addons

While developing addons, be sure to use Developer Mode with a local HTTP server. It makes it much quicker to test and much easier to fix problems, which otherwise can prevent Construct 3 from starting up.

All Contributors

  • Ashley's avatar
    Last edited 8 Jan, 2018
    ~1,804 chars in 9 edits
  • Tom's avatar
    Last edited 9 Aug, 2017
    ~825 chars in 10 edits