One challenge with trying to expose these kinds of services via an API is that much of their utility emerges from a building a model around data of interest. In

One challenge with trying to expose these kinds of services via an API is that much of their utility emerges from a building a model around data of interest. In order to efficiently build a customized capability, one would have to upload potentially large amounts of data to an engine for processing. As a general information service, you ask a question in text, and get an answer in text.