Unlike the routing API that uses GraphQL, the geocoding API is a traditional REST interface.
The geocoding API provides a way to perform address searches and address lookups (also known as reverse geocoding).
This API is very simple, supporting only GET requests to perform searches. Geocoding results are returned in GeoJSON format.
Check examples for Address lookup, Address search and Autocompletion.
Geocoding API is implemented using Pelias. If you are interested, you can learn more about the Pelias search API from: