An authentication token is required to send API requests to most endpoints. Our API uses tokens to identify and authenticate a single user or automated process. There are two types of authentication tokens supported: API Keys , and OAuth 2.0 access tokens .

To authenticate API requests, please include a valid token of either type within the Authorization HTTP header of your requests. The header's value must include a prefix of Bearer and one or more spaces before the token value:

Authorization: Bearer <API Key>
Authorization: Bearer <OAuth 2.0 Access Token>

For more information about the authentication mechanism, please see our documentation .