stella is a scootersharing company based in Europe.
There is no authentication or special headers and only GET-Requests required for the API-Endpoint https://stella.frontend.fleetbird.eu/api/prod/v1.06/. You can request all(?) vehicles with https://stella.frontend.fleetbird.eu/api/prod/v1.06/map/cars/ or filter them by bbox like https://stella.frontend.fleetbird.eu/api/prod/v1.06/map/cars/?lat1=48.5&lat2=49.5&lon1=8.5&lon2=9.5 or show the 20 nearest vehicles around a location with https://stella.frontend.fleetbird.eu/api/prod/v1.06/cars/?lat=48.8&lon=9.1.
Polygons with regions and parking restrictions are available on https://stella.frontend.fleetbird.eu/api/prod/v1.06/territories/all/ (type: 0 looks like free floating region and type: 1 are no parking zones).
Vehicle types with images are available on https://stella.frontend.fleetbird.eu/api/prod/v1.06/cars/types/