There is a WADL document available that describes the resources API.
You may also enjoy the Swagger UI provided for this API.
||This service allows querying file locations on the MEP for specific remote sensing products. This includes the PROBA-V and Copernicus Global Land Service products. It currently supports queries on location (bounding box) and time. The returned metadata contains file paths, which are valid in MEP VM's and on the Hadoop processing cluster.|