is all nostr events so you can subscribe to goals and their zaps from anywhere.
Discussion
Sounds like maybe an opportunity for a service?
Like Nostr IFTTT. You specify some condition based on events and an action to take. The service monitors for the condition to be met, then runs the action (in this case calling a webhook).
Users of the service register by pubkey and pay by LN. API can either be website, or DM to a bot.
That's the idea the webhook can do anything really. Eventually having an API to call would be handy as well. I'll have my live feed ready soon as the hardware arrives, and look forward to sending a stream to zap.stream.