EU CBAM & Carbon Tax Calculation Engine

{
  "success": true,
  "data": {
    "valid": true,
    "cnCode": "72081000",
    "productName": "Flat-rolled products of iron/steel, in coils, hot-rolled",
    "sector": "iron_and_steel",
    "countryOfOrigin": "CN",
    "countryName": "China",
    "netMassTonnes": 50,
    "directEmissionsTco2e": 105,
    "indirectEmissionsTco2e": 18.011,
    "totalEmbeddedEmissionsTco2e": 123.011,
    "specificEmbeddedEmissionsPerTonne": 2.4602,
    "euEtsBenchmarkPriceEurPerTonne": 72.5,
    "grossFinancialLiabilityEur": 8918.3,
    "carbonPriceDeductionEur": 1414.63,
    "netFinancialLiabilityEur": 7503.67,
    "regulatoryReference": "EU Regulation 2023/956 Annex IV & Implementing Regulation (EU) 2023/1773 (As of September 1, 2026)"
  },
  "meta": {
    "latency_ms": 1.42,
    "version": "1.0.0"
  }
}

curl --request POST \
  --url "https://api.stanzaapi.com/cbam-carbon/api/v1/cbam/calculate" \
  --header "Content-Type: application/json" \
  --header "x-api-key: YOUR_API_KEY" \
  --data '{
  "cnCode": "72081000",
  "countryOfOrigin": "CN",
  "massKg": 50000
}'

const response = await fetch("https://api.stanzaapi.com/cbam-carbon/api/v1/cbam/calculate", {
  method: "POST",
  headers: {
    "Content-Type": "application/json",
    "x-api-key": process.env.API_KEY || "YOUR_API_KEY"
  },
  body: JSON.stringify({
  "cnCode": "72081000",
  "countryOfOrigin": "CN",
  "massKg": 50000
})
});

const data = await response.json();
console.log(data);

import requests
import json

url = "https://api.stanzaapi.com/cbam-carbon/api/v1/cbam/calculate"
headers = {
    "Content-Type": "application/json",
    "x-api-key": "YOUR_API_KEY"
}
payload = {
    "cnCode": "72081000",
    "countryOfOrigin": "CN",
    "massKg": 50000
}

response = requests.post(url, json=payload, headers=headers)
print(response.json())

package main

import (
	"bytes"
	"fmt"
	"io"
	"net/http"
	"os"
)

func main() {
	url := "https://api.stanzaapi.com/cbam-carbon/api/v1/cbam/calculate"
	payload := []byte(`{"cnCode":"72081000","countryOfOrigin":"CN","massKg":50000}`)

	req, _ := http.NewRequest("POST", url, bytes.NewBuffer(payload))
	req.Header.Add("Content-Type", "application/json")
	req.Header.Add("x-api-key", os.Getenv("API_KEY"))

	res, err := http.DefaultClient.Do(req)
	if err != nil {
		panic(err)
	}
	defer res.Body.Close()
	body, _ := io.ReadAll(res.Body)
	fmt.Println(string(body))
}