I found this SO answer: MaxExpansionDepth with latest webapi and breeze
But this only applies to a single method on the controller. Applying the BreezeQueryable attribut
I submitted a pull request to add the MaxExpansionDepth to a controller rather than on each methods. https://github.com/IdeaBlade/Breeze/pull/35
We can look into offering the Web API Queryable attributes on the BreezeControllerAttribute
and applying your settings as the default values when we qualify the controller query methods. Please vote for this on "User Voice"
Meanwhile, you know it is open source. You can implement your own version of BreezeControllerAttribute
.