> Who told the agent to write the blog post though? I'm sure they told it to blog, but not necessarily what to put in there.

I don't think it matters. You as the operator of the computer program are responsible for ensuring (to a reasonable degree) that the agent doesn't harm others. If you own a ~~viscous~~ vicious dog and let it roam about your neighborhood as it pleases, you are responsible when/if it bites someone, even if you didn't directly command it to do so. The same applies logic should apply here.

I too, would be terrified if a thick, slow moving creature oozed its way through the streets viscously.

Jokes aside, I think there's a difference in intent though. If your dog bites someone, you don't get arrested for biting . You do need to pay damages due to negligence.