The REST API documentation is at Home | Adobe Developer Connection.
When you are ready to request the report, one thing to keep in mind is
that the pageurl is a data warehouse dimension, so be sure to add
"source":"warehouse" to the request:{ "reportDescription":{
"reportSuiteID":"INSERT-RSID-HERE", "dateFrom":"2017-11-01",
"dateTo":"2017-11-07", "elements":[ { "id":"pageurl" } ],
"source":"warehouse" }}