The OAuth Client Credentials API retrieves an OAuth access token. This access token must be included in the Authorization Bearer HTTP header for subsequent LynkUp API requests.

• The API utilizes BASIC authentication. Your clientId must be provided as the username and your clientSecret as the password.
• The OAuth API should only be called once in a given period of time. The access token can be reused many times for subsequent API calls.
• The access token expiration time is returned in the "expires_in" field of the response. The token should be cached and reused until slightly prior to the expiration time.
• If the access token expires, a new token must be requested using the same credentials. The old token will no longer be valid.