Deterministic dataset profile (CSV/Parquet)

[
  {
    "scheme": "exact",
    "network": "eip155:8453",
    "payTo": "0x6e06Db2C43C5FecCeB7Bd8fC7a560c4264e5c085",
    "asset": "0x833589fCD6eDb6E08f4c7C32D4f71b54bdA02913",
    "amount": "10000",
    "maxTimeoutSeconds": 300
  }
]

{
  "bazaar": {
    "info": {
      "input": {
        "body": {
          "file": "sample.csv",
          "metadata": "{\"options\": {\"detail\": \"compact\"}}"
        },
        "bodyType": "form-data",
        "method": "POST",
        "type": "http"
      },
      "output": {
        "example": {
          "dataset": {
            "bytes": 261,
            "columns": 4,
            "format": "csv",
            "rows": 10
          },
          "request_id": "req_c83180b1fb4a4a40b3a86db8752ccd14",
          "schema": [
            {
              "missing": 0,
              "missing_percentage": 0,
              "name": "revenue",
              "nullable": false,
              "type": "number",
              "unique_values": 9
            }
          ],
          "status": "completed"
        },
        "type": "json"
      }
    },
    "schema": {
      "$schema": "https://json-schema.org/draft/2020-12/schema",
      "properties": {
        "input": {
          "additionalProperties": false,
          "properties": {
            "body": {
              "properties": {
                "file": {
                  "description": "Dataset file to profile (CSV or Parquet)",
                  "format": "binary",
                  "type": "string"
                },
                "metadata": {
                  "description": "Optional JSON string: {format, options, limits}. See https://github.com/RobFarcrowd/trixie-lasagne/blob/main/API.md",
                  "type": "string"
                }
              },
              "required": [
                "file"
              ]
            },
            "bodyType": {
              "enum": [
                "json",
                "form-data",
                "text"
              ],
              "type": "string"
            },
            "method": {
              "enum": [
                "POST",
                "PUT",
                "PATCH"
              ],
              "type": "string"
            },
            "type": {
              "const": "http",
              "type": "string"
            }
          },
          "required": [
            "type",
            "method",
            "bodyType",
            "body"
          ],
          "type": "object"
        },
        "output": {
          "properties": {
            "example": {
              "type": "object"
            },
            "type": {
              "type": "string"
            }
          },
          "required": [
            "type"
          ],
          "type": "object"
        }
      },
      "required": [
        "input"
      ],
      "type": "object"
    }
  }
}

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

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