Once you have on boarded on Liminal, you will receive client_id and client_secret as part of concierge on boarding. You must initialise your SDK integration with client_id and client_secret.
All calls to endpoints that require authentication must pass the client access token in the Authorization HTTP header of the request message.
Client Access Token
To get client access token for REST APIs you can use /auth endpoint with client_id and client_secret which will return client access token.
The format of the header is authorization: Bearer