> > does any of the existing plugins show how to add a REST API > > call to Orthanc when loaded ? > > Ah, I see: Samples/Basic/... > :-) Yes, and you can also check the following official plugins to have more complete sample code: http://www.orthanc-server.com/static.php?page=web-viewer http://www.orthanc-server.com/static.php?page=dicomweb The DICOMweb plugin is presumably a good starting point to see how the REST callbacks work in the real life.