SW Construction: AlchemyAPI ("API as a Service" example)

API as a Service are interesting things (services) to be integrated in external information systems, and that typically that are paid per use. One example is AlchemyAPI: AlchemyAPI - Wikipedia

PS. A white paper on Alchemy API with which I have been spammed (not spam but almost). Note: Requires registering:

The Rise of PhD APIs: How AlchemyAPI Is Contributing To The Next Phase Of The API Economy
APIs are no longer just a development tool. In this white paper from ProgrammableWeb, you can learn more about the rise of PhD APIs and how they harbor game-changing potential for organizations and business models.