An automated interface generates a tree of design actions based on a predetermined set of functions and relationship information, each intermediary node of the tree representing a partial user interface design, and each branch of the tree representing a design action that creates or modifies the partial user interface design. A plurality of candidate user interface designs are determined, each implementing the received plurality of functions, by traversing the tree along multiple traversal paths from a root node of the tree to respective leaf nodes of the tree and executing respective design actions represented by branches along the traversal paths. A completed interface design is selected from the plurality of completed interface designs based on a predetermined selection algorithm, and the final user interface is generated based on the selected candidate user interface design.