Review result: Ready I have reviewed this document as part of the security directorate's ongoing effort to review all IETF documents being processed by the IESG. These comments were written primarily for the benefit of the security area directors. Document editors and WG chairs should treat these comments just like any other last call comments. This document defines a syntax for specifying authorization information, organized as a set of actions available to a particular subject. The design targets IoT devices, though nothing limits its use to just IoT devices and it would not be appropriate for all IoT devices because it targets a REST interface. Seems fine. Radia