Is there a way to introspect tokens of other realms from a client in the master realm

Is there a way to have a client in the master realm which can introspect tokens for any other realms without needing to create a client in that realm?

To be clear I do know that it’s possible to just inspect the JWT token, but that isn’t quite the same as it e.g. doesn’t know about token revocation or about omitted information from lightweight access tokens.