{"source":"chainlink","eth_usd":{"price":2632.15022553,"updated_at":"2026-09-20T18:39:15.000Z"},"ts":"2026-09-20T18:49:30.401Z","pay_to":"0x0363bC5c120AdD309aCEE44F36e7cAee4488bCab","network":"eip155:8453","price":"0.01","note":"demo is free; paid endpoints are listed in /.well-known/agent.json and require verified, settled x402 USDC"}