U

[
  {
    "scheme": "exact",
    "network": "eip155:8453",
    "payTo": "0x24FAcafEB49b4e3FACF0B3e69604A2F4640c9bf2",
    "asset": "0x833589fCD6eDb6E08f4c7C32D4f71b54bdA02913",
    "amount": "1000",
    "maxTimeoutSeconds": 300
  }
]

{
  "bazaar": {
    "info": {
      "description": "U.S. Census ACS demographic data. Population, median income, poverty rate, unemployment, home values, and education by state or county.",
      "iconUrl": "https://memoryapi.org/icon.png",
      "input": {
        "method": "GET",
        "queryParams": {
          "level": "state",
          "state": "CA"
        },
        "schema": {
          "properties": {
            "level": {
              "description": "state (default) or county",
              "type": "string"
            },
            "state": {
              "description": "2-letter state code (CA, TX, NY) or omit for all states",
              "type": "string"
            }
          },
          "required": []
        },
        "type": "http"
      },
      "output": {
        "example": {
          "data": [
            {
              "median_home_value": 538500,
              "median_household_income": 84097,
              "name": "California",
              "population": 39538223,
              "poverty_rate_pct": 12.3,
              "unemployment_rate_pct": 7.8
            }
          ],
          "success": true
        }
      },
      "serviceName": "MemoryAPI Econ",
      "tags": [
        "economics",
        "macro",
        "finance",
        "data"
      ]
    },
    "schema": {
      "properties": {
        "input": {
          "properties": {
            "method": {
              "enum": [
                "GET"
              ],
              "type": "string"
            }
          },
          "required": [
            "method"
          ]
        }
      }
    }
  }
}

curl "https://econ.memoryapi.org/x402/econ/demographics"
# -> 402 Payment Required, accepts[] lists how to pay
# retry with a PAYMENT-SIGNATURE (or PAYMENT header) once paid

const res = await fetch("https://econ.memoryapi.org/x402/econ/demographics");
if (res.status === 402) {
  const { accepts } = await res.json();
  // pay one of accepts[] via an x402 client, then retry with the payment header
}

import httpx
res = httpx.get("https://econ.memoryapi.org/x402/econ/demographics")
if res.status_code == 402:
    accepts = res.json()["accepts"]
    # pay one of accepts[] via an x402 client, then retry with the payment header