For production applications, you must register with Building Engines for an API Key. This key authorizes your application to call into the Building Engines API. This is not the same as user authentication described below. This API key is used for any calls from the application in question.
An API Key appears as a random string, such as:
kyMWR8s9.ZEMvNubPAxWndkLatME3NokZxTZaSuYA
Such a key is sent with every API request as an HTTP header as in:
X-Prism-App: kyMWR8s9.ZEMvNubPAxWndkLatME3NokZxTZaSuYA
Failure to supply a correct API key can result in all calls returning an HTTP 401 authentication failure.