A method may include collecting a plurality of computer-readable source code from an application programming interface (API) repository. The method may also include performing API call code slicing on the computer-readable source code. The method may also include extracting an API host and an endpoint for each of the API call codes identified in the API call code slicing. The method may also include compiling an API mashup database based on the extracted API host and endpoints. Furthermore, the method may also include providing a recommended API mashup of the API mashup database in a user interface.