Embodiments are directed to generating declarative model editors. A computer system receives a first user input indicating a selection of a native underlying schema that includes constraints that are to be followed by models based on the native schema. The computer system receives a second user input indicating a declarative entry that includes user-configurable model editor characteristics. The computer system automatically generates a declarative model editor based on the selected native schema and user-configurable model editor characteristics. Other embodiments are directed to editing models using declarative model editors. A computer system receives user input indicating a declarative entry to be applied to a model, generates a declarative model editor based on the declarative entry, receives a model that is editable by the generated declarative model editor, and edits user-configurable characteristics of the model. The model characteristics conform to the constraints in the native underlying schema.