I think the answer to this is yes, but my problem is how do I find it with the API? I want to find all the datasets on a particular hub - e.g. Open Geography portal. When you search for all datasets it calls the API https://opendata.arcgis.com/api/v3/search but I can't seem to replicate the datasets it sends back in standalone API calls. Basically I am looking for a way to find all the Open Geography datasets using an API call to https://opendata.arcgis.com/api/v3/search. Is the API documented anywhere? I think the open data infrastructure is very good, but there doesn't seem to be any API documentation.