Right now we have bots on nostr, but most are fairly simple

The GPT bot is a good example of a smarter bot, because it has an API to AI, leading to richer interactions

Smart bots could have advanced logic that includes payments. So a bot could have a "battery" that when it gets low, needs to be topped up. It could perform all sorts of algorithms, some in understandable contracts. Some with on chain commitments to make it tamper proof

Whole new services and business models can spring up to enhance the nostr ecosystem in a permissionless way