Customs & trade · x402

eu-carbon-customs

EU CBAM (carbon border adjustment) default embedded emissions for a CN/TARIC code and country of origin, from the official Commission default-values file: direct, indirect and total tCO2e per tonne, production route, year mark-up, and optional embedded emissions and certificate cost for a shipment (tonnes, EUR price).

0.003 USDC / call · {atomic} atomic · 3000 atomic

Endpoint

GET|POST https://forge-tools.dentreprise.workers.dev/api/eu-carbon-customs

Parameters

Name	Required	Type	Description
`cn`	Required	string	CN/TARIC code 4-10 digits
`country`	Required	string	Origin country name or ISO alpha-2
`year`	Optional	string	2026+
`tonnes`	Optional	string	Shipment mass in tonnes (optional)
`price_eur`	Optional	string	CBAM certificate price EUR/tCO2e (optional)

Example request (unpaid — expect 402)

curl -sS -D - "https://forge-tools.dentreprise.workers.dev/api/eu-carbon-customs?cn=72081000&country=CN&tonnes=100&price_eur=75"

Example 402 challenge

The same object is also sent as a base64 PAYMENT-REQUIRED header. Amounts are atomic USDC units (6 decimals).

{
  "x402Version": 2,
  "error": "Payment required",
  "resource": {
    "url": "https://forge-tools.dentreprise.workers.dev/api/eu-carbon-customs",
    "description": "EU CBAM (carbon border adjustment) default embedded emissions for a CN/TARIC code and country of origin, from the official Commission default-values file: direct, indirect and total tCO2e per tonne, production route, year mark-up, and optional embedded emissions and certificate cost for a shipment (tonnes, EUR price).",
    "mimeType": "application/json"
  },
  "accepts": [
    {
      "scheme": "exact",
      "network": "eip155:8453",
      "amount": "3000",
      "asset": "0x833589fCD6eDb6E08f4c7C32D4f71b54bdA02913",
      "payTo": "0x7B8bf45ac6AcbA6D4CFB626b57D3f5fF3C9C89F7",
      "maxTimeoutSeconds": 120,
      "extra": {
        "name": "USD Coin",
        "version": "2"
      }
    }
  ]
}

Retry with payment

curl -sS "https://forge-tools.dentreprise.workers.dev/api/eu-carbon-customs?cn=72081000&country=CN&tonnes=100&price_eur=75" \
  -H "PAYMENT-SIGNATURE: $PAYMENT"

Example response

{
  "cn": "72081000",
  "country_table": "China",
  "items": [
    {
      "description": "Flat-rolled products…",
      "total": 2.5,
      "total_with_markup": 2.75,
      "embedded_emissions_t": 275
    }
  ]
}