You need to use API Key to authenticate every request made to the API. You can view and manage your API keys in here. All API keys have the prefix ak-.
Authentication to the API is performed via Bearer Token. Provide your API key in the Authorization header (e.g. -H "Authorization: Bearer ak-**").
API requests must be made over HTTPS. Calls made over plain HTTP will fail. Requests without authentication will also fail.
Be sure to keep your API keys secure! Do not share your secret API keys in publicly accessible areas such as GitHub, client-side code, etc.