European Commission CBAM Registry XML Declaration Guide

{
  "declarationId": "CBAM-DECL-2026-Q1-DE987654",
  "totalItems": 1,
  "totalMassTonnes": 50,
  "totalEmissionsTco2e": 123.011
}

curl --request POST \
  --url "https://eu-cbam-carbon-tax-calculation-engine.stanzaapi.com/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://eu-cbam-carbon-tax-calculation-engine.stanzaapi.com/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://eu-cbam-carbon-tax-calculation-engine.stanzaapi.com/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://eu-cbam-carbon-tax-calculation-engine.stanzaapi.com/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))
}