Bearer Access token

Hello,

I Want to generate Bearer Acess token without Using Single-Sign ON (SAML) to integrate in my application through API. Can you please provide me any static key which is equivalent to response code and Web API Client Id which gets genrated through 

https://secure.echosign.com/public/oauth?redirect_uri=https://myserver.com& response_type=code&client_id=CBAThIsIsNoTaReAlmPBvPF& scope=user_login:self+agreement_send:account

want to skip this step. Please Help me how to get the bearer token and refresh token in my api , without redirecting to login page.