In one aspect, in a computer-implemented method it is determined whether a placeholder corresponding to a service includes an identifier similar to a tag associated with an element of a user interface. The placeholder is replaced with a value of the element associated with the tag based on the results of the determining step. The service is called using the value. Information is received from the called service, the information corresponding to the element of user interface. Related systems, apparatus, methods, and/or articles are also described.