As a visitor of an actinia instance, it would be helpful to see all connected data, without a filter if I am allowed to use it or not. The current endpoints can list all locations which I am allowed to use or all mapsets of a certain location which I am allowed to use. It would be helpfull to see at one glance which data is available in the whole system.

Edit: it would additionally be helpful to see if the data is in the global grassdb or in the userdb.