From Nest API for iOS is only sample code for thermostates Nest API. I did support for show parameters for Nest API camera and add it to code https://github.com/akr11/forIncreasingNestApi. See please readme file and links in it on github https://github.com/nestlabs/ios-NestDK. In this repository only added camera support. Don't forgot set needed permissions for camera in console (read please documentation of Nest API). Debug was on Nest Home Simulator only.
(https://www.youtube.com/watch?v=z0MVcnRTF_0)
License
Apache 2.0 - See LICENSE for more information. License is similar ofthe start source https://github.com/nestlabs/ios-NestDK.