API ReferencePlatformSearchGeospatial SearchGeocoding and reverse geocoding (Nominatim), Overture Maps places and buildings, and what3words address conversion. 3 endpointsSearch NominatimPOST/api/v1/search/nominatimGeocode addresses and reverse geocode coordinates via OpenStreetMap Nominatim. Actions: 'search' (find places by name/address), 'reverse' (coordinates to address), 'lookup' (OSM object details by ID). Free, rate-limited to 1 req/s.Search Overture MapsPOST/api/v1/search/overture-mapsSearch Overture Maps Foundation open map data for places, buildings, and points of interest. Actions: 'places' (search for businesses and amenities near a location), 'info' (about Overture Maps data themes and downloads).Search What3wordsPOST/api/v1/search/what3wordsConvert between what3words 3-word addresses and GPS coordinates. Actions: 'convert_to_coordinates' (3 words to lat/lon), 'convert_to_3wa' (lat/lon to 3 words), 'autosuggest' (complete partial 3-word input), 'grid_section' (get 3m grid for an area). Requires free API key.Air QualityGlobal air quality measurements from OpenAQ and UK DEFRA AURN monitoring network.Mining & MineralsGlobal mineral production statistics (BGS), 300,000+ mineral deposit records (USGS MRDS), and Australian critical minerals operating mines and deposits (Geoscience Australia).