(2)
Stone Temple and Eric Enge has put together a set of Actions on Google for Google Assistant and Google Home voice responses to your SEO queries. You can try it yourself by asking Google Assistant or your Google Home "Ask Stone Temple" followed by your SEO question.
Here is a video of it in action:
I wonder how big their database of questions are.
If you want a hint, you can use the SEMRush featured snippets tool to capture a ton of question related queries and responses and then fill them into a database to make your own Google Actions. It is a quick way to build a Q&A database for you to make your own Actions on Google recipe.
Forum discussion at Twitter.
