I am working on an alexa skill that has account linking via the oauth authorization code grant flow, with the credentials returned in the body. I am able to successfully link my account to my skill and have verified this by checking the session.user.accessToken value.
However, since my oauth deals with on-premise servers I return additional parameters that need to be saved by my skill to make subsequent api calls to the account, in addition to the accessToken (and refreshToken). The parameter (an 'instance_url') is returned as part of the successful authorization code grant. Is there a way to access this parameter in either the session or context attributes for my alexa skill?