~/arvados/services/api$ RAILS_ENV=development bundle exec rails console
-irb(main):001:0> ApiClient.where('url_prefix like ?', '%workbench%')
-=> {:id => 1234}
-irb(main):002:0> ApiClient.find(1234).update_attributes is_trusted: true
+irb(main):001:0> wb = ApiClient.all.last; [wb.url_prefix, wb.created_at]
+=> ["https://workbench.example.com/", Sat, 19 Apr 2014 03:35:12 UTC +00:00]
+irb(main):002:0> include CurrentApiClient
+=> true
+irb(main):003:0> act_as_system_user do wb.update_attributes!(is_trusted: true) end
+=> true