UI Page has multiple widget and each widget display data by invoking API

Full requirement is 
 

Have 4 widgets and Global Area

Each Widgets calls behind the scene API with one key that is present in the global Area

Present that data in the widget

Now each widget can be consider as Page -- 

Now how easily create Page which invokes API and dispaly -- if API is returning 10 or so parameter do we need to create manually the page and have items and map items to API return value