The current version of the DigitalNZ API is version 3. We recommend that people build applications using this version of the API for new applications and migrate existing projects. We will continue to support versions 1 and 2 of the DigitalNZ API for the foreseeable future.
We currently provide four API calls for accessing the DigitalNZ collection:
Remember that DigitalNZ does not have a copy of items in the collection. Instead, we hold metadata about items in other collections, together with a pointer to the content object. DigitalNZ Search therefore behaves much like a search engine.

Portrait of man with computers. K E Niven and Co :Commercial negatives. Ref: 1/2-225451-F. Alexander Turnbull Library, Wellington, New Zealand. http://beta.natlib.govt.nz/records/23146438