Konica Minolta OpenAPI is based around a SOAP/XML architecture, however a "wrapper" to abstract the SOAP messages is provided to allow developers to use the Microsoft .NET Framework instead.
The direct SOAP interface has also been used successfully from the Java language in commercial products[1] and deployed on various other operating systems including Linux, OS X, Novell OES 2 and Windows.
Despite being a SOAP based technology, it differs from a traditional Open API in that it is for communication between an application and an MFPs rather than two web services.
Despite the name "Open API", it is a proprietary technology, and neither is it an open-source system, nor is the SDK or a specification of the interface publicly available.
Despite this, a part of the API is able to query the supported functions and version levels available from the MFP and a stated goal of the API is to allow communication to multiple different devices, without the concern over their exact model - as such, backwards compatibility and conformity across the range is strongly emphasised.