The Gold-Vision API uses OAuth 2.0 client credentials for authentication, an industry standard protocol for authorization. (https://www.oauth.com/oauth2-servers/access-tokens/client-credentials/). To begin working with the API, you will need the following information which will have been provided following a successful api usage application:     The “goldvisionapi” scope must be sent along with the given Client ID and Client Secret when requesting a token. As mentioned earlier access to the Client ID and Client Secret and use of the API is subject to a successful application and Acceptable Usage Policy, applications can be made by contacting us.