Lofting between profiles is available in most CAD APIs. But how about lofting between two thin-wall/concentric profiles. Is there any CAD API that allows this functionality?
Yes, there are functionalities available, e.g. in CATIA V5 (from Dassault Systemes): Use the function "Multi-Sections Surface" in the workbench "Generative Shape Design"; see the picture attached.
Similar functions are also available in other CAD software, e.g. PTC Creo, Siemens NX.