Dear Rajiv,

Thank you for evaluating Premier Studio, and welcome to Intersoft Community!

Crosslight Server WebAPI is currently designed for use with Crosslight client apps, although you can actually consume the WebAPI from any platforms since we implemented the WebAPI based on OData 4 specification.

In your case for WebUI, you can trigger the WebAPI method from JavaScript by simply creating an XHR request thatconnects to the WebAPI endpoint address. You will then receive the response in JSON.

However, we do plan to support Crosslight WebAPI from WebUI natively in the upcoming release, specifically for data controls such as WebGrid and WebCombo. Could you inform which WebUI products you're interested to use with the WebAPI? 

Hope this helps,