Yes. We're all going to become meat proxies and we're all going to add LLM service uptime as a single point of failure to... every aspect of our technological civilization. But it's all worth it because Grok will let you force feminize Draco Malfoy into a anime girl and that's worth never understanding anything again.

There should be enough detail in the spec that it's pretty obvious. And unlike - many - human devs, agents don't shy away from writing tests. Add a coverage guardrail and tell them to use red/green TDD and you're already a good way there. The main thing is to ensure shared understanding, so they also know business expectations and write appropriate tests. And... nothing here is really specific to an agent, as a human dev also needs sufficient guidance (tailored to their experience level).