PG

I'm investigating PowerBI reports vs the ARIS Connect REST API in order to present key results for our model numbers, freshness, group hierarchy, model types &c. However, I'm getting stuck on generating and using the session key to do the actual REST queries. PostMan works fine with a POST query like http://aris.myorganization.com/umc/api/v1/tokens?tenant=default&name=admin&password=topsecret, but PowerBI Desktop keeps insisting that the query must be anonymous in order to POST. 

Could anyone share a working skeleton PowerBI report that works to retrieve any data? I can do manual refresh of the session keys if I absolutely must, but won't be able to publish reports for others that way.