Hey there. I have a "feature" request to Authentik. The /core/users endpoint has a couple of filtering options like name, path and for me more important the uuid.
Since we have the ability to filter the uuid there is no way to retreive it via the API. My suggestion is to add the uuid in the user response of the api.

Would you like to do that? We achived that by adding the uuid to the user Meta class of users.py file.
https://github.com/goauthentik/authentik/blob/main/authentik/core/api/users.py

    class Meta:
        model = User
        fields = [
            "pk",
            "username",
            "name",
            ....
            "uuid",
        ]
        extra_kwargs = {
            "name": {"allow_blank": True},
        }