Proof402

As AI agents get wallets and call paid APIs, the hard problem isn't payment but permission. An agent that can pay can also burn a budget on a scam API or a fake grant.

Builder · Hack-Nation 2026 (Spiral challenge)

• Designed a policy gate that intercepts every risky agent action and answers with a real HTTP 402 Payment Required, ready for L402 clients.
• Issued machine-readable proof receipts (verdict, confidence, evidence, risk flags) for 3–6 sat Lightning-style micropayments behind a swappable payment adapter.
• Built a configurable spend policy (caps, confidence thresholds, blocked terms) and a live dashboard of allowed, denied and manual-review actions.

→Every agent spend leaves an auditable reason (allowed, denied or sent to manual review), using a 402 and receipt schema ready to plug into real Lightning rails.