Buttons on the right could be used for Live or JSON granular requests. Live granular has dedicated button,

To make JSON granular call just mark a checkbox and press JSON call button;

JSON preview will render JSON directly on the page.

Product identifiers could be following: Brand + MPN or EAN code or Product ID.

To share the link press corresponding button, if you've performed some requests before - the link will be
with action parameter, else it will contain only the page settings.