Hello, This may be of interest to us too: Resource Indicators for OAuth 2.0 draft-ietf-oauth-resource-indicators-01 Several years of deployment and implementation experience with The OAuth 2.0 Authorization Framework [RFC6749<https://tools.ietf.org/html/rfc6749>] has uncovered a need, in some circumstances, for the client to explicitly signal to the authorization server where it intends to use the access token it is requesting. Thanks, --Cigdem