What if your AI trading agent couldn't execute a single trade unless you had explicitly told it that it was allowed to?
Not "the AI will try its best to follow your preferences." Not "there's a risk limit slider somewhere in the settings." I mean a hard, synchronous block. As long as the rule doesn't exist in the constitution? No execution. That's it.
I pondered on the initial question for a while. Every DeFi agent content I'd seen seemed to majorly focus on capability — what the agent can do. Almost none of them addressed constraint — what it categorically cannot do, and more importantly, how you prove it held the line.
I recently built Nostra: a constitutional DeFi agent running on ElizaOS v2 and deployed on Nosana's decentralized GPU network. It just ranked #6 out of 105 submissions across 32 countries in Nosana's Fourth Builders' Challenge. The judges called it "a thoughtful approach to trust, compliance, and agent responsibility" — which, honestly, felt great to read after two weeks of late-night debugging.
Let's walk through how it works. Including the parts that didn't.
