I built an x402 marketplace for verifiable public-domain data (SEC, NOAA, openFDA…) — Agents pay per record in USDC. Looking for feedback.

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Glad the framing landed. The demo point is genuinely the most important thing you can do right now — once someone watches an agent pay 5 cents, get back a SEC filing with a provenance URL, and then independently verify it at sec.gov, the whole concept clicks instantly in a way that no amount of explanation achieves. On the Coinbase CDP hackathon — worth checking cdp.coinbase.com directly and their Discord. They run them fairly regularly and your stack is almost embarrassingly well-aligned with what they want to showcase. One more thought since you mentioned making the stack solid before drawing a crowd — that instinct is good, but for hackathon purposes judges are actually forgiving of rough edges if the core loop works cleanly. You don't need production-grade reliability for a demo, you need one beautiful end-to-end flow that tells the story. Ship the demo now, polish the production system in parallel. The fact you're live on the Bazaar already is your biggest credibility signal. Most hackathon entries are ideas. You have a working thing. Coincidentally I'm also building with x402 — I have a stablecoin depeg monitoring agent that uses it for pay-per-request access at $0.001 USDC per call on Base, so I've been living inside this payment model too. The per-record micropayment pattern for agent data makes complete sense to me — the friction of API keys and subscriptions is genuinely the wrong model for autonomous agents that spin up and down dynamically. Your provenance angle on top of that is the differentiator though. Anyone can proxy a government API. Not everyone thinks carefully about what "verifiable" actually means for an agent that needs to cite its sources. Good luck with it — worth entering. Look at dorahacks... new hacks all the time... it will get the right people to see your project.