OLTU, in it's limited documentations has an example of serving access tokens based on generated UUIDs. See here under Token Endpoint
It also has an example of using JWTs (Java Web Tokens) for server-to-server authorization here, but only as a bearer token in an authorization grant request
Nowadays it is common to use JWTs as the access tokens themselves (saves unnecessary trips to the authorization server)
Is there any reason this is not provided by OLTU out-of-the-box? It seems it would be easy to implement a custom solution, but I would have expected there to be a JWT-based implementation of the ValueGenerator interface so that the standard implementation of the token issuer, OAuthIssuerImpl could generate one.
Is anybody doing this with OLTU?