In the Cisco DNAC Gui, under platform, there is a Developer Toolkit that lets you search for all available APIs. My search for "sensor" and a bit of poking around the categories of APIs on the left came up empty, so I think it's safe to say there is no sensor API today. If you have a need for it, please submit a request using the "Make a Wish" tool in the little lifesaver icon menu at the top of the GUI.
