What makes it a standardized version of Message Pack?<p>Message Pack has a specification that is well documented[0] and even the rfc you refer to specifically states it has different goals (though, eliding specifics with pretty sad generalizations)[1]<p>[0]: <a href="https:&#x2F;&#x2F;github.com&#x2F;msgpack&#x2F;msgpack&#x2F;blob&#x2F;master&#x2F;spec.md" rel="nofollow">https:&#x2F;&#x2F;github.com&#x2F;msgpack&#x2F;msgpack&#x2F;blob&#x2F;master&#x2F;spec.md</a><p>[1]: <a href="https:&#x2F;&#x2F;tools.ietf.org&#x2F;html&#x2F;rfc7049#section-9" rel="nofollow">https:&#x2F;&#x2F;tools.ietf.org&#x2F;html&#x2F;rfc7049#section-9</a>