Authentication to the API is performed via HTTP Basic Auth. Provide your API key as the basic auth username value. You do not need to provide a password.
Authorization: Basic xxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxx==
All API requests must be made over HTTPS. Calls made over plain HTTP will fail. API requests without authentication or invalid Basic Auth header will result in a HTTP/1.1 401 Unauthorized status.
Some API requests require an additional ApiKey be passed in the body of the request. If this key is missing or invalid the will result in a HTTP/1.1 401 Unauthorized status.