This is the Countries data collection
You can use these endpoints to get Features and Features Collections in GeoJSON. In docs you can find a small map with this data. GraphQL will arrive soon to this category. Geometries are NOT 100% accurate for reality, consider this if you need high precision
GET
/api/countriesGet an array with the complete list of elements
GET
/api/countries/:(index or ID)Get an element by index or ID
GET
/api/countries/randGet a random element
PUT
/api/countries/:(index or ID)Update a complete element
PATCH
/api/countries/:(index or ID)Update partial fields of an element
POST
/api/countriesCreate a new element
DELETE
/api/countries/:(index or ID)