I've written a bot with the Bot framework and gotten it working with Cortana on Windows and Android. I just unpacked a new Cortana Invoke to test it with today, but I can't figure out how to register it there.
For my Amazon Echo, I was able to register my custom skill in the app and start using it with the Echo right away.
Am I missing something, or does the standalone Cortana Invoke not support custom skills yet?
Turns out it was user error.
The syntax is "Hey Cortana, ask to ". I was missing the "Hey" part...