Retrieve Data from Mangement API(management.azure.com)

I am deploying a web application as  a cloud service within a subscription,Web application has a background job doing inventory for services inside subscription,to get data from Management API(e.g List Resource Groups)required to pass AD access token.I am resfreshing the AccessToken by Refreshtoken 
,But the Refresh Token has a validity of maximum 90 days. Is there any alternative to get data from Mangement API (management.azure.com) without passing the user AD Access Token