Convert a JSON array of objects into a clean RFC 4180 CSV: header row, CRLF records, corre

[
  {
    "scheme": "exact",
    "network": "eip155:8453",
    "payTo": "0xc55A2D530b53CBaD1001e4AfD4720B7E71f9C291",
    "asset": "0x833589fCD6eDb6E08f4c7C32D4f71b54bdA02913",
    "amount": "2000",
    "maxTimeoutSeconds": 60
  }
]

{
  "bazaar": {
    "info": {
      "input": {
        "body": {
          "delimiter": ",",
          "rows": [
            {
              "city": "Orléans",
              "name": "Jeanne d'Arc",
              "stats": {
                "active": true,
                "score": 9.5
              }
            },
            {
              "name": "José",
              "tags": [
                "vip",
                "beta"
              ]
            }
          ]
        },
        "bodyType": "json",
        "method": "POST",
        "type": "http"
      },
      "output": {
        "example": "name,city,stats.score,stats.active,tags\r\nJeanne d'Arc,Orléans,9.5,true,\r\nJosé,,,,\"[\"\"vip\"\",\"\"beta\"\"]\"\r\n",
        "type": "json"
      }
    },
    "schema": {
      "$schema": "https://json-schema.org/draft/2020-12/schema",
      "properties": {
        "input": {
          "additionalProperties": false,
          "properties": {
            "body": {
              "description": "Either this object form, or the bare `rows` array itself as the whole JSON body (defaults then apply).",
              "properties": {
                "columns": {
                  "description": "Optional column selection and order (flattened dot-notation names). Unknown names produce empty cells. Omit to use the union of all flattened row keys in first-seen order.",
                  "items": {
                    "type": "string"
                  },
                  "type": "array"
                },
                "delimiter": {
                  "default": ",",
                  "description": "Field separator.",
                  "enum": [
                    ",",
                    ";",
                    "\t",
                    "|"
                  ],
                  "type": "string"
                },
                "rows": {
                  "description": "1–100,000 plain JSON objects, one per CSV record. Nested objects flatten to dot-notation column names; arrays are JSON-encoded into their cell; null becomes an empty cell.",
                  "items": {
                    "type": "object"
                  },
                  "maxItems": 100000,
                  "minItems": 1,
                  "type": "array"
                }
              },
              "required": [
                "rows"
              ],
              "type": "object"
            },
            "bodyType": {
              "enum": [
                "json",
                "form-data",
                "text"
              ],
              "type": "string"
            },
            "method": {
              "enum": [
                "POST"
              ],
              "type": "string"
            },
            "type": {
              "const": "http",
              "type": "string"
            }
          },
          "required": [
            "type",
            "method",
            "bodyType",
            "body"
          ],
          "type": "object"
        },
        "output": {
          "properties": {
            "example": {
              "contentMediaType": "text/csv",
              "description": "The response body is the CSV file (Content-Type: text/csv; charset=utf-8, Content-Disposition: attachment; filename=\"data.csv\"). CRLF record separators, trailing CRLF included.",
              "type": "string"
            },
            "type": {
              "type": "string"
            }
          },
          "required": [
            "type"
          ],
          "type": "object"
        }
      },
      "required": [
        "input"
      ],
      "type": "object"
    }
  }
}

curl "https://402utils.com/v1/json-to-csv"
# -> 402 Payment Required, accepts[] lists how to pay
# retry with a PAYMENT-SIGNATURE (or PAYMENT header) once paid

const res = await fetch("https://402utils.com/v1/json-to-csv");
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://402utils.com/v1/json-to-csv")
if res.status_code == 402:
    accepts = res.json()["accepts"]
    # pay one of accepts[] via an x402 client, then retry with the payment header