The following is from a Mechanical Translation (German to English via Google) From the German Digital Library (Deutsche Digitale Bibliothek):
The public part of the API currently consists of 15 methods , which make the data available in the German Digital Library data in a different manner. Scope and format of the data provided in response to an API call out are determined by the purpose for which each method is intended.
Our API users can decide how, where, and in what contexts they want to use the data represented in the German Digital Library cultural and scientific institutions.
For the realization of this vision we rely on the support of dedicated developers and developers, program the creative uses of our API.
The German Digital Library is committed to providing the best possible support their developer community. Under http://api.deutsche-digitale-bibliothek.de/doku comprehensive documentation with code samples is available. This includes information on how to register as a developer.
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