Osm

query OpenStreetMap via nominatim (geocoding) + overpass API (spatial queries). no API key needed.

rules

• read-only. never edit or upload anything to OSM.

geocoding — resolve address/place to coordinates

curl -s -H "User-Agent: opencrow/1.0" "https://nominatim.openstreetmap.org/search?q=<ADDRESS>&format=json&limit=3"

returns lat, lon, display_name. use coordinates for overpass queries.

reverse geocoding — coordinates to address

curl -s -H "User-Agent: opencrow/1.0" "https://nominatim.openstreetmap.org/reverse?lat=<LAT>&lon=<LON>&format=json"

overpass — spatial queries