Ghost does have a private undocumented API, but I can totally understand that any 3rd party like Story Chief aren’t comfortable adding a connector that they know could break any second, and especially given that the authentication flows aren’t really setup for this kind of extension.
We are working on getting the API both easy to authenticate with and reliable to build against. I’d suggesting hanging fire and having a better life after we ship those changes, however the structure of the API itself won’t change so much, and therefore it’s possible to start building prototypes to be prepared for when the improved API lands.
And before anyone asks. No, there’s no ETA: About the Ideas category