bypass logon page in APM policy , An application making an API call to APM policy and I don't need logon page to appear .

bypass logon page in APM policy , An application making an API call to APM policy and I don't need logon page to appear .

I'm making an Oauth policy but as a business need an application will make a call to my APM who hosts my resource application server.

building Oauth policy , we need to authenticate the client application , who can I authenticate them without have to show logon page.

any thoughts ?