You can retrieve your list of data sources by doing the following:
HTTP GET to https://www.easy-insight.com/app/api/dataSources.json
The result will be a JSON array with an entry for each data source:
[ { "name": "data source 1", "id": "abcabcabc" }, { "name": "data source 2", "id": "bcdbcdbcdbcd" } ]