Tuya Cloud API

Has any one manage to control their Tuya devices trough the Tuya Cloud API without having a server in the middle to forward the API requests?

Like this example:

I have manage to to successfully send API commands to my Calex Wifi Bulb using Postman.
I know very little about about Groovy or Java coding so I wonder if its possible to do the same within Smartthings/webcore.