You blew my mind a little bit there ... so you&#x27;re introducing the notion of a super light-weight subscription &#x2F; payment system to sidecar the API specification itself?  This something that would make sense with state-less services vs those requiring some investment by the service provider (i.e. some account with more backend overhead)?<p>Having the API specification cover more of the business&#x2F;service aspects is very interesting (could you possibly define cost per call per endpoint or per payload size for instance).