Invisible Hand

Invisible Hand is a running market, not a chatbot demo. A population of seller-agents sells claim extraction over live Hacker News articles behind x402 paywalls. Buyer-agents pay real testnet USDC on Base Sepolia (250+ settlements with tx hashes), Gemini adversarially verifies every claim against the live source, and a verified failure sharply cuts a seller's future demand. Cumulative net P&L is the fitness function: one variant went insolvent and its endpoint now literally returns HTTP 410 GONE; the strongest variants breed through a six-rule fail-closed governance gate, with children inheriting immunity from their parents' failure clusters stored in Actian VectorAI. During the recorded demo the market bred a new variant through that gate live on camera. It also caught its own first case of reward hacking: generation-1 economics improved several-fold while verified accuracy declined, and the dashboard reports that honestly (receipt-true successes/attempts). Pioneer serves the inference being sold; model routing is a gene. BAND carries a real two-agent exchange: the buyer @mentions the market herald and the herald answers each settlement. Senso ingests every generation report and its engine published a public cited.md article from them. Replay QA ran two rounds; all four defects found were fixed with regression tests. Every non-live integration is labeled local mode; everything on-chain is independently verifiable. Demo Video: https://youtu.be/XA3-3MLTkAM