Hi @Torben_Van_Assche ,
You can’t run the PlayCanvas editor locally, it’s closed sourced and requires a robust backend (cloud) to operate.
If you would like to run an editor script to change the behavior of the editor, you can do so using an unofficial API that is available:
For Typescript support you can use the following tool provided by the PlayCanvas team to have your local TS repository automatically synchronized with your PlayCanvas project: