what3words Public API
REST API for converting between three-word addresses and latitude / longitude coordinates, with AutoSuggest, available-languages, and grid-section endpoints. JSON or GeoJSON response formats. Authenticated via the X-Api-Key header or a key query parameter.
what3words Public API is one of 15 APIs that what3words publishes on the APIs.io network.
Tagged areas include REST API, Geocoding, and Addressing. The published artifact set on APIs.io includes API documentation.