curl --request POST \
  --url https://api.byteful.com/1.0/public/user/checkout/quote \
  --header 'Content-Type: <content-type>' \
  --header 'X-API-Private-Key: <api-key>' \
  --header 'X-API-Public-Key: <api-key>' \
  --data '
{
  "cycle_interval": "month",
  "cycle_interval_count": 1,
  "product_code": "isp_gb",
  "promotional_code": "PROMOCODEHERE",
  "quantity": 5
}
'

import requests

url = "https://api.byteful.com/1.0/public/user/checkout/quote"

payload = {
    "cycle_interval": "month",
    "cycle_interval_count": 1,
    "product_code": "isp_gb",
    "promotional_code": "PROMOCODEHERE",
    "quantity": 5
}
headers = {
    "Content-Type": "<content-type>",
    "X-API-Private-Key": "<api-key>",
    "X-API-Public-Key": "<api-key>"
}

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

print(response.text)

const options = {
  method: 'POST',
  headers: {
    'Content-Type': '<content-type>',
    'X-API-Private-Key': '<api-key>',
    'X-API-Public-Key': '<api-key>'
  },
  body: JSON.stringify({
    cycle_interval: 'month',
    cycle_interval_count: 1,
    product_code: 'isp_gb',
    promotional_code: 'PROMOCODEHERE',
    quantity: 5
  })
};

fetch('https://api.byteful.com/1.0/public/user/checkout/quote', 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://api.byteful.com/1.0/public/user/checkout/quote",
  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([
    'cycle_interval' => 'month',
    'cycle_interval_count' => 1,
    'product_code' => 'isp_gb',
    'promotional_code' => 'PROMOCODEHERE',
    'quantity' => 5
  ]),
  CURLOPT_HTTPHEADER => [
    "Content-Type: <content-type>",
    "X-API-Private-Key: <api-key>",
    "X-API-Public-Key: <api-key>"
  ],
]);

$response = curl_exec($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://api.byteful.com/1.0/public/user/checkout/quote"

	payload := strings.NewReader("{\n  \"cycle_interval\": \"month\",\n  \"cycle_interval_count\": 1,\n  \"product_code\": \"isp_gb\",\n  \"promotional_code\": \"PROMOCODEHERE\",\n  \"quantity\": 5\n}")

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

	req.Header.Add("Content-Type", "<content-type>")
	req.Header.Add("X-API-Private-Key", "<api-key>")
	req.Header.Add("X-API-Public-Key", "<api-key>")

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

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

	fmt.Println(string(body))

}

HttpResponse<String> response = Unirest.post("https://api.byteful.com/1.0/public/user/checkout/quote")
  .header("Content-Type", "<content-type>")
  .header("X-API-Private-Key", "<api-key>")
  .header("X-API-Public-Key", "<api-key>")
  .body("{\n  \"cycle_interval\": \"month\",\n  \"cycle_interval_count\": 1,\n  \"product_code\": \"isp_gb\",\n  \"promotional_code\": \"PROMOCODEHERE\",\n  \"quantity\": 5\n}")
  .asString();

require 'uri'
require 'net/http'

url = URI("https://api.byteful.com/1.0/public/user/checkout/quote")

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

request = Net::HTTP::Post.new(url)
request["Content-Type"] = '<content-type>'
request["X-API-Private-Key"] = '<api-key>'
request["X-API-Public-Key"] = '<api-key>'
request.body = "{\n  \"cycle_interval\": \"month\",\n  \"cycle_interval_count\": 1,\n  \"product_code\": \"isp_gb\",\n  \"promotional_code\": \"PROMOCODEHERE\",\n  \"quantity\": 5\n}"

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

{
  "data": {
    "before_discount_total": 350,
    "credit_balance": 99050,
    "credit_only_checkout": true,
    "customer_credit_balance_applied": true,
    "customer_credit_balance_applied_amount": 350,
    "discount": 0,
    "discounted": false,
    "invalid_reason": "null",
    "is_top_up": false,
    "is_valid": true,
    "line_items": [
      {
        "item_country_id": "null",
        "item_name": "Static Residential ISP Proxies",
        "item_per_unit_amount": 350,
        "item_price_id": "price_1QJx2DB2BUlqim5lxmO3aT2v",
        "item_price_type": "recurring",
        "item_quantity": 1,
        "item_total": 350,
        "item_type": "isp",
        "service_fulfillment_filter": [
          {
            "country_id": "gb",
            "quantity": 4
          }
        ]
      }
    ],
    "promotional_code": "null",
    "promotional_code_id": "null",
    "top_up_amount": 0,
    "total": 350,
    "total_after_applied_credit": 0
  },
  "message": "Quote generated successfully."
}