A computer-implemented method that includes receiving source code for a user interface program, generating, using the source code, the user interface program, generating, using the source code, a faux backend program, and generate, using the source code, a skeleton Application Programing Interface (API) file is disclosed. The user interface program and the faux backend program are capable of operating together as part of a test build. The skeleton API data provides a specification for an interface of production software suitable for replacing the faux backend, the specification including respective specifications for a plurality of API calls.