Dialog-style application programming interface for a machine learning solution

An approach is provided for using a dialog-style API for a machine learning solution. A server receives from a client a first call to a dialog-style application programming interface (API) as a first request having an incomplete set of data items. The API determines that one or more data items required by the first request are missing... The server sends to the client a reply having values of data items in a response to the second request and second metadata that describes the data items in the response.