The EDR implementation builds on MET3SG community MET SWIM OGC EDR GUIDANCE. Additionally it supports OGC EDR filtering machanisms: cube query using a bbox parameter, area query with a polygon specified in coords parameter, radius query.
Reference
Information to be found here:
https://swim-eurocontrol.atlassian.net/wiki/spaces/MSS/pages/630194181/MET+SWIM+OGC+EDR+Guidance