Ask HN: Is there a market for an API development company?

Web Dev Shops (and Creative Agencies) are everywhere, but I am yet to see a company that focuses on developing APIs for clients. Sure, it is most often part of the development of a mobile app, but what about smallish companies that want to make their data (whatever it is) available more programmatically. For example, a large restaurant chain might want to make its menu more accessible; or a non-profit foundation may want to make its data more accessible. Thoughts?