Atmosoar Elevation API: terrain elevation in metres above mean sea level for points, polylines, areas and batches, from Copernicus GLO-30/90 and regional DEMs.
Endpoints: GET /elevation/api/elevation (points, lines, areas) and POST /elevation/api/elevation/cluster (batches). The full reference is the OpenAPI document.
GET /elevation/api/elevation
POST /elevation/api/elevation/cluster