An application system provides a specification to render and update interface objects to a first application on one or more computing devices. The first application receives a request to provide instructions for presenting an object from a second application operating on the one or more computing devices. The first application communicates the instructions for presenting the object to the second application. The communication may be made via the operating system of the one or more computing devices or in another suitable manner. The first application receives an update to the instructions for presenting the object to the second application from an application provider or other application system. The first application communicates the updated instructions for presenting the object to the second application.