The Office 365 start page shows a list of recently used documents.
The data is being fetched from https://ocws.officeapps.live.com/ocs/v2/recent/docs?apps=Word,Excel,PowerPoint,Visio,OneNote,Sway&show=100&rs=en-US
Is this an official API that we can use? Where can I find documentation or an SDK around it?
(Note: there is another question about how to get these documents here. I know about the Microsoft Graph endpoints, but this question is specifically about above API.)