curl --request POST \
  --url https://external.emissions.bnzgreen.io/api/calculate \
  --header 'Content-Type: application/json' \
  --header 'x-api-key: <x-api-key>' \
  --header 'x-body-signature: <x-body-signature>' \
  --header 'x-platform-id: <x-platform-id>' \
  --data '
{
  "flights": [
    {
      "origin": "<string>",
      "destination": "<string>",
      "operatingCarrierCode": "<string>",
      "flightNumber": 123,
      "departureDate": {
        "year": 123,
        "month": 123,
        "day": 123
      }
    }
  ]
}
'

import requests

url = "https://external.emissions.bnzgreen.io/api/calculate"

payload = { "flights": [
        {
            "origin": "<string>",
            "destination": "<string>",
            "operatingCarrierCode": "<string>",
            "flightNumber": 123,
            "departureDate": {
                "year": 123,
                "month": 123,
                "day": 123
            }
        }
    ] }
headers = {
    "x-api-key": "<x-api-key>",
    "x-body-signature": "<x-body-signature>",
    "x-platform-id": "<x-platform-id>",
    "Content-Type": "application/json"
}

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

print(response.text)

const options = {
  method: 'POST',
  headers: {
    'x-api-key': '<x-api-key>',
    'x-body-signature': '<x-body-signature>',
    'x-platform-id': '<x-platform-id>',
    'Content-Type': 'application/json'
  },
  body: JSON.stringify({
    flights: [
      {
        origin: '<string>',
        destination: '<string>',
        operatingCarrierCode: '<string>',
        flightNumber: 123,
        departureDate: {year: 123, month: 123, day: 123}
      }
    ]
  })
};

fetch('https://external.emissions.bnzgreen.io/api/calculate', options)
  .then(res => res.json())
  .then(res => console.log(res))
  .catch(err => console.error(err));

<?php

$curl = curl_init();

curl_setopt_array($curl, [
  CURLOPT_URL => "https://external.emissions.bnzgreen.io/api/calculate",
  CURLOPT_RETURNTRANSFER => true,
  CURLOPT_ENCODING => "",
  CURLOPT_MAXREDIRS => 10,
  CURLOPT_TIMEOUT => 30,
  CURLOPT_HTTP_VERSION => CURL_HTTP_VERSION_1_1,
  CURLOPT_CUSTOMREQUEST => "POST",
  CURLOPT_POSTFIELDS => json_encode([
    'flights' => [
        [
                'origin' => '<string>',
                'destination' => '<string>',
                'operatingCarrierCode' => '<string>',
                'flightNumber' => 123,
                'departureDate' => [
                                'year' => 123,
                                'month' => 123,
                                'day' => 123
                ]
        ]
    ]
  ]),
  CURLOPT_HTTPHEADER => [
    "Content-Type: application/json",
    "x-api-key: <x-api-key>",
    "x-body-signature: <x-body-signature>",
    "x-platform-id: <x-platform-id>"
  ],
]);

$response = curl_exec($curl);
$err = curl_error($curl);

curl_close($curl);

if ($err) {
  echo "cURL Error #:" . $err;
} else {
  echo $response;
}

package main

import (
	"fmt"
	"strings"
	"net/http"
	"io"
)

func main() {

	url := "https://external.emissions.bnzgreen.io/api/calculate"

	payload := strings.NewReader("{\n  \"flights\": [\n    {\n      \"origin\": \"<string>\",\n      \"destination\": \"<string>\",\n      \"operatingCarrierCode\": \"<string>\",\n      \"flightNumber\": 123,\n      \"departureDate\": {\n        \"year\": 123,\n        \"month\": 123,\n        \"day\": 123\n      }\n    }\n  ]\n}")

	req, _ := http.NewRequest("POST", url, payload)

	req.Header.Add("x-api-key", "<x-api-key>")
	req.Header.Add("x-body-signature", "<x-body-signature>")
	req.Header.Add("x-platform-id", "<x-platform-id>")
	req.Header.Add("Content-Type", "application/json")

	res, _ := http.DefaultClient.Do(req)

	defer res.Body.Close()
	body, _ := io.ReadAll(res.Body)

	fmt.Println(string(body))

}

HttpResponse<String> response = Unirest.post("https://external.emissions.bnzgreen.io/api/calculate")
  .header("x-api-key", "<x-api-key>")
  .header("x-body-signature", "<x-body-signature>")
  .header("x-platform-id", "<x-platform-id>")
  .header("Content-Type", "application/json")
  .body("{\n  \"flights\": [\n    {\n      \"origin\": \"<string>\",\n      \"destination\": \"<string>\",\n      \"operatingCarrierCode\": \"<string>\",\n      \"flightNumber\": 123,\n      \"departureDate\": {\n        \"year\": 123,\n        \"month\": 123,\n        \"day\": 123\n      }\n    }\n  ]\n}")
  .asString();

require 'uri'
require 'net/http'

url = URI("https://external.emissions.bnzgreen.io/api/calculate")

http = Net::HTTP.new(url.host, url.port)
http.use_ssl = true

request = Net::HTTP::Post.new(url)
request["x-api-key"] = '<x-api-key>'
request["x-body-signature"] = '<x-body-signature>'
request["x-platform-id"] = '<x-platform-id>'
request["Content-Type"] = 'application/json'
request.body = "{\n  \"flights\": [\n    {\n      \"origin\": \"<string>\",\n      \"destination\": \"<string>\",\n      \"operatingCarrierCode\": \"<string>\",\n      \"flightNumber\": 123,\n      \"departureDate\": {\n        \"year\": 123,\n        \"month\": 123,\n        \"day\": 123\n      }\n    }\n  ]\n}"

response = http.request(request)
puts response.read_body

[
  {
    "flight": {
      "origin": "<string>",
      "destination": "<string>",
      "operatingCarrierCode": "<string>",
      "flightNumber": 123,
      "departureDate": {
        "year": 123,
        "month": 123,
        "day": 123
      }
    },
    "emissionsGramsPerPax": {
      "first": 123,
      "business": 123,
      "premiumEconomy": 123,
      "economy": 123
    }
  }
]

{
  "error": 123,
  "message": "<string>"
}