Use BB API with persistent Oauth2 Code

[CrombieDev]

We are implementing a list of events that is public to the users. We cannot ask them to login into Blackbaud, since the account we use for that is a management one.

Is there any way to provide persistent access to the API using a "manually obtained" CODE only one time and then just remember that CODE (and only retrive the tokens as needed in the posterior steps)?

Our auth flow goes by: (as for now)

First we obtain manually the code using the Oauth2 step (that give us the CODE parameter in the callback URI) /authorization
Second we obtain by scripting the TOKEN using the /token endpoint
Lastly we do the proper call using the proper endpoint (e.g. /v1/eventlist )

The first step is the one we want to avoid doing manually.