Anthropic's Claude Duet is a proactive agent that polls your connected apps, drafts work on its own, and stops to ask before it sends, pays, signs, or deletes. That permission policy is the marketer-relevant part: a three-tier framework (do it yourself / draft-then-approve / never) you can write down for your own stack, with ad spend as the worked example. Plus the economics and the access wall - research preview, US only, Pro and Max subscribers only.
