Google Assistant SDK publicly released so that anyone can put the Assistant into their devices2
Moreover, Google announced that its Assistant would be available in Android Auto and Android TV shortly. However, with the release of the developer preview of the Google Assistant SDK, anyone can port the assistant to their devices.
If you're a veteran developer or a start-up, you can now put Google Assistant on your self-built robot or voice-enabled smart mirror. Google wants its Assistant to be accessible from any platform.
According to the Mountain View company, the developer preview of Google Assistant SDK includes a gRPC API, a Python open source client that's useful for authentication and access to the API, as well as samples and documentation.
It's also worth mentioning that the Google Assistant SDK will allow developers to capture a spoke query like “what's on my calendar,” pass it to the Google Assistant service and receive an audio response.
Google will continue to add features to the SDK, which is why this is just a developer preview. For example, future releases will include hotword support, companion app integration and more.