Obtaining an API Key ==================== All interactions with this service must provide a valid API key that is registered to an existing user of the service. You can obtain your API key by visiting the ADS website and viewing your user profile at https://www.osti.gov/award-doi-service/account Using API Keys ============== API Keys should be sent in the Authorization header of every HTTP request. These are ``Bearer`` tokens. A properly formatted header field for the request would look like:: Authorization: Bearer myapikey