When I use the api call /catalog/api/admin/items and provide the projectId parameter I always get a full list of all items. I'm expecting it to only show the items available to a project but maybe I'm misunderstanding how that parameter works? From the swagger definition the description is "Matches which can be requested within project with the given projectId" . I think all items and content sources are available to any project right so maybe this parameter is useless? I was expecting to only see the list of sources or items already entitled to a project and would be available to be requested. If I use the /catalog/api/admin/entitlements endpoint then work from that to get the catalog items I get the info I was looking for but I was expecting to be able to filter it from the items call when providing the project id.