To design an API, there are a few good ebooks, well worth the price: https://leanpub.com/build-apis-you-wont-hate https://leanpub.com/build-apis-you-wont-hate

To design an API, there are a few good ebooks, well worth the price: https://leanpub.com/build-apis-you-wont-hate https://leanpub.com/build-apis-you-wont-hate Not sure what you mean by a "reporting" API?