List content library items into variable

[Aladdin]

Qlik Sense allows pulling out content library items through its Qlik Engine JSON API: https://help.qlik.com/en-US/sense-developer/April2019/Subsystems/EngineAPI/Content/Sense_EngineAPI/G...

However, I can't make a REST connection to the JSON wss endpoint.

How do I incorporate this into a qlik sense app ( perhaps via data load script ) to populate a variable with the contents in comma-separated value ? 

[Yoichi_Hirotake]

I have a sample code which connect to wss end point. It doesn't exactly achieve what you want here though, I believe at least it  may give you some idea on how to run Engine API.

https://github.com/yoichiH01/Qlik-Sense-Engine-API---GetAllInfos