Weekly official Japan Customs reference exchange rate (税関長公示レート) used to convert import de

[
  {
    "scheme": "exact",
    "network": "eip155:8453",
    "payTo": "0x67AC1E671E87b2c91847230748ed38a596013EA6",
    "asset": "0x833589fCD6eDb6E08f4c7C32D4f71b54bdA02913",
    "amount": "2000",
    "maxTimeoutSeconds": 60
  }
]

{
  "bazaar": {
    "info": {
      "input": {
        "method": "GET",
        "queryParams": {
          "currency": "USD"
        },
        "type": "http"
      },
      "output": {
        "example": {
          "data": {
            "applicable_period": "令和７年６月22日から令和７年６月28日まで",
            "currencies": 1,
            "rates": [
              {
                "country_code": "304",
                "country_name_ja": "アメリカ合衆国",
                "currency_name_ja": "ドル",
                "iso": "USD",
                "note": null,
                "yen_per_unit": 144.29
              }
            ]
          },
          "kind": "factual_data",
          "product": "jp.fx.customs_rate"
        },
        "type": "json"
      }
    },
    "schema": {
      "$schema": "https://json-schema.org/draft/2020-12/schema",
      "properties": {
        "input": {
          "additionalProperties": false,
          "properties": {
            "method": {
              "enum": [
                "GET"
              ],
              "type": "string"
            },
            "queryParams": {
              "properties": {
                "currency": {
                  "description": "optional 3-letter ISO currency code filter, e.g. USD (omit for all currencies)",
                  "type": "string"
                },
                "date": {
                  "description": "optional ISO date to select the applicable week, default today",
                  "type": "string"
                }
              },
              "type": "object"
            },
            "type": {
              "const": "http",
              "type": "string"
            }
          },
          "required": [
            "type",
            "method"
          ],
          "type": "object"
        },
        "output": {
          "properties": {
            "example": {
              "type": "object"
            },
            "type": {
              "type": "string"
            }
          },
          "required": [
            "type"
          ],
          "type": "object"
        }
      },
      "required": [
        "input"
      ],
      "type": "object"
    }
  }
}

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

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