What your agent x is basically a restatement of the cosmological argument. What you might be missing is that what youre saying could be construed as a multiverse idea. There is a place that is outside our universe where some disembodied mind (William Craigs description) created our universe. So would our universe be inside of this creators universe? Its not likely wed be able to see it because the cosmic microwave background radiation hides anything beyond it. How do you know that the creator isnt a team of scientists that have a huge superconducting collider that spawned a big bang and here we are?