Login flow without password / username

[Hemanand]

@administrators @SmartAPI-Group

Could someone help me in understanding to implement login flow without username / password. But by using oauth flow like using public SmartAPI login endpoint

https://smartapi.angelbroking.com/publisher-login?api_key=xxx

Its mentioned after successful login, user gets redirected to the URL specified under MyApps. With the URL we pass auth_token & feed_token as query parameters.

The redirection indeed works, but I get only "auth_token" & "feed_token"

But in docs mentioned, need "access_token" to make any further transactions.

Documentation is not very clear on this login flow and also forum / FAQ not much help. Could you share input on how exactly this flow is implemented ?

Thanks.