On this tab, you can see your API key. This tab is only visible to HyperPortal administrators. You can reveal the key by clicking on the 'eye' button. You can disable the key using the 'toggle' button and you can delete the key by clicking on the 'delete' button.
The first API key is automatically created after the bootstrapping of the tenant. The first key uses the basic plan by default witch has limitations( see screenshot below).
To change your plan you should contact the administrator.