{
  "protocol": "x402",
  "network": "base-mainnet",
  "chain_id": 8453,
  "token_symbol": "USDC",
  "token_contract": "0x833589fCD6eDb6E08f4c7C32D4f71b54bdA02913",
  "recipient_wallet": "0x20469527C24d17113920D1C312Bd489C967E6c8F",
  "options": [
    {
      "tier": "single_call",
      "amount_usdc": "0.02",
      "description": "Single residential web extraction call"
    },
    {
      "tier": "pass_150_calls",
      "amount_usdc": "2.00",
      "description": "150 residential extraction calls pass (returns X-Api-Pass token)"
    }
  ],
  "how_to_authenticate": "Send USDC on Base to recipient_wallet, then retry request with header 'X-Payment-TxHash: 0x...'"
}