The REST API for RDSpace@UBT is provided as part of its "server" webapp. It is available on

though a human browseable/searchable interface (using the HAL Browser) is also available at

Part of the REST API Documentation for DSpace by Tim Donohue, LYRASIS which is licensed under CC BY 4.0 / A derivative from the original work.
For the detailed documentation of the REST API, please see the DSpace Documentation.