Is auto clone and deploy to a new sub domain possible?

Hi, @1111. As far as pointers, you can see our API documentation here:

There are also the two support guides below:

Do you want the user to create a new site under your existing team? If so, you could make Functions that have an API key from Netlify embedded in them and then have the site call those functions to create the new site

If you plan to take that route, then the following support guide about embedding API keys will be helpful:

If there are other questions, please let us know.