Аннотация:In this paper, we will discuss the current state of open APIs for M2M applications, as well as propose several possible changes and extensions. Our article based on open standards provided by ETSI. An open specification, presented as an Application Programming Interface (OpenAPI), provides applications with a rich framework of core network capabilities upon which to build services while encapsulating the underlying communication protocols. OpenAPI is a portable platform for services that may be replicated and ported between different execution environments and hardware platforms. We are proposing possible extensions for ETSI documents that let keep telecom development in sync with the modern approaches in the web development.