Your API keys carry many privileges, so be sure to keep them secure! Do not share your secret API keys in publicly accessible areas such as GitHub, client-side code, and so forth.
All API requests must be made over HTTPS. Calls made over plain HTTP will fail. API requests without authentication will also fail. Authentication to the API is performed via HTTP Bearer Auth. Provide your API key as the Bearer token value in the Authorization header.
Authorization: Bearer <YOUR_API_KEY>