curl --request POST \
  --url https://api.fungies.io/v0/elements/checkout/create \
  --header 'Content-Type: application/json' \
  --header 'x-fngs-public-key: <api-key>' \
  --header 'x-fngs-secret-key: <api-key>' \
  --data '
{
  "offersIds": [
    "3c90c3cc-0d44-4b50-8888-8dd25736052a"
  ],
  "name": "<string>",
  "customFields": [
    {
      "id": "<string>",
      "value": "<string>"
    }
  ]
}
'

import requests

url = "https://api.fungies.io/v0/elements/checkout/create"

payload = {
    "offersIds": ["3c90c3cc-0d44-4b50-8888-8dd25736052a"],
    "name": "<string>",
    "customFields": [
        {
            "id": "<string>",
            "value": "<string>"
        }
    ]
}
headers = {
    "x-fngs-public-key": "<api-key>",
    "x-fngs-secret-key": "<api-key>",
    "Content-Type": "application/json"
}

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

print(response.text)

const options = {
  method: 'POST',
  headers: {
    'x-fngs-public-key': '<api-key>',
    'x-fngs-secret-key': '<api-key>',
    'Content-Type': 'application/json'
  },
  body: JSON.stringify({
    offersIds: ['3c90c3cc-0d44-4b50-8888-8dd25736052a'],
    name: '<string>',
    customFields: [{id: '<string>', value: '<string>'}]
  })
};

fetch('https://api.fungies.io/v0/elements/checkout/create', 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.fungies.io/v0/elements/checkout/create",
  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([
    'offersIds' => [
        '3c90c3cc-0d44-4b50-8888-8dd25736052a'
    ],
    'name' => '<string>',
    'customFields' => [
        [
                'id' => '<string>',
                'value' => '<string>'
        ]
    ]
  ]),
  CURLOPT_HTTPHEADER => [
    "Content-Type: application/json",
    "x-fngs-public-key: <api-key>",
    "x-fngs-secret-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.fungies.io/v0/elements/checkout/create"

	payload := strings.NewReader("{\n  \"offersIds\": [\n    \"3c90c3cc-0d44-4b50-8888-8dd25736052a\"\n  ],\n  \"name\": \"<string>\",\n  \"customFields\": [\n    {\n      \"id\": \"<string>\",\n      \"value\": \"<string>\"\n    }\n  ]\n}")

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

	req.Header.Add("x-fngs-public-key", "<api-key>")
	req.Header.Add("x-fngs-secret-key", "<api-key>")
	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://api.fungies.io/v0/elements/checkout/create")
  .header("x-fngs-public-key", "<api-key>")
  .header("x-fngs-secret-key", "<api-key>")
  .header("Content-Type", "application/json")
  .body("{\n  \"offersIds\": [\n    \"3c90c3cc-0d44-4b50-8888-8dd25736052a\"\n  ],\n  \"name\": \"<string>\",\n  \"customFields\": [\n    {\n      \"id\": \"<string>\",\n      \"value\": \"<string>\"\n    }\n  ]\n}")
  .asString();

require 'uri'
require 'net/http'

url = URI("https://api.fungies.io/v0/elements/checkout/create")

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

request = Net::HTTP::Post.new(url)
request["x-fngs-public-key"] = '<api-key>'
request["x-fngs-secret-key"] = '<api-key>'
request["Content-Type"] = 'application/json'
request.body = "{\n  \"offersIds\": [\n    \"3c90c3cc-0d44-4b50-8888-8dd25736052a\"\n  ],\n  \"name\": \"<string>\",\n  \"customFields\": [\n    {\n      \"id\": \"<string>\",\n      \"value\": \"<string>\"\n    }\n  ]\n}"

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

{
  "status": "<string>",
  "data": {
    "checkoutElement": {
      "id": "3c90c3cc-0d44-4b50-8888-8dd25736052a",
      "offers": [
        {
          "id": "3c90c3cc-0d44-4b50-8888-8dd25736052a",
          "object": "offer",
          "internalId": null
        }
      ],
      "object": "checkoutElement",
      "name": null,
      "subscriptionOffer": false
    }
  }
}

{
  "status": "error",
  "error": {
    "message": "Sample error message"
  }
}