In the context of the Open Archives Inititative, both repositories ePIC and PANGAEA are OAI-PMH compliant data providers.  The following technical information is available:

Base URLs

ePIC: http://rep.awi.de:8080/oaiprovider/
PANGAEA: ws.pangaea.de/oai/

Identify

ePIC: http://rep.awi.de:8080/oaiprovider/?verb=Identify
PANGAEA: http://ws.pangaea.de/oai/?verb=Identify

Metadata format

ePIC: http://rep.awi.de:8080/oaiprovider/?verb=ListMetadataFormats
PANGAEA: http://ws.pangaea.de/oai/?verb=ListMetadataFormats

Web Services

Because ePIC which uses Fedora as software framework, all ePIC items can be also accessed via SOAP web services using the following WSDL: http://rep.awi.de:8080/fedora/wsdl?api=API-A.  Information on methods for using Fedora's APIs can be found at http://www.fedora-commons.org/.