"On the other side, there are this DVMs that work as ai agents available on nostr"
I think you may mean **"marketplace agents" ** instead of "ai agents".
I can remember back to the marketplace hype of the dot.com bust, and can say that historically B2B is trusted. You may find new partners through a market place, but most B2B solutions setup trusted connections to trusted partners. The reason for this is to maintain quality.
How does a DVM ensure the quality of the work before payment is made? How does a DVM remove bad actors from bidding (whitelists?)?