curl --request POST \
  --url https://api.valyx.com/external/creditNotes/upsert \
  --header 'Content-Type: application/json' \
  --header 'X-Valyx-Signature: <x-valyx-signature>' \
  --data '{}'

import requests

url = "https://api.valyx.com/external/creditNotes/upsert"

payload = {}
headers = {
    "X-Valyx-Signature": "<x-valyx-signature>",
    "Content-Type": "application/json"
}

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

print(response.text)

const options = {
  method: 'POST',
  headers: {'X-Valyx-Signature': '<x-valyx-signature>', 'Content-Type': 'application/json'},
  body: JSON.stringify({})
};

fetch('https://api.valyx.com/external/creditNotes/upsert', options)
  .then(res => res.json())
  .then(res => console.log(res))
  .catch(err => console.error(err));

const options = {
  method: 'POST',
  headers: {'X-Valyx-Signature': '<x-valyx-signature>', 'Content-Type': 'application/json'},
  body: JSON.stringify({})
};

fetch('https://api.valyx.com/external/creditNotes/upsert', options)
  .then(res => res.json())
  .then(res => console.log(res))
  .catch(err => console.error(err));

package main

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

func main() {

	url := "https://api.valyx.com/external/creditNotes/upsert"

	payload := strings.NewReader("{}")

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

	req.Header.Add("X-Valyx-Signature", "<x-valyx-signature>")
	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.valyx.com/external/creditNotes/upsert")
  .header("X-Valyx-Signature", "<x-valyx-signature>")
  .header("Content-Type", "application/json")
  .body("{}")
  .asString();

<?php

$curl = curl_init();

curl_setopt_array($curl, [
  CURLOPT_URL => "https://api.valyx.com/external/creditNotes/upsert",
  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([
    
  ]),
  CURLOPT_HTTPHEADER => [
    "Content-Type: application/json",
    "X-Valyx-Signature: <x-valyx-signature>"
  ],
]);

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

curl_close($curl);

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

require 'uri'
require 'net/http'

url = URI("https://api.valyx.com/external/creditNotes/upsert")

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

request = Net::HTTP::Post.new(url)
request["X-Valyx-Signature"] = '<x-valyx-signature>'
request["Content-Type"] = 'application/json'
request.body = "{}"

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

import Foundation

let parameters = [] as [String : Any?]

let postData = try JSONSerialization.data(withJSONObject: parameters, options: [])

let url = URL(string: "https://api.valyx.com/external/creditNotes/upsert")!
var request = URLRequest(url: url)
request.httpMethod = "POST"
request.timeoutInterval = 10
request.allHTTPHeaderFields = [
  "X-Valyx-Signature": "<x-valyx-signature>",
  "Content-Type": "application/json"
]
request.httpBody = postData

let (data, _) = try await URLSession.shared.data(for: request)
print(String(decoding: data, as: UTF8.self))

val client = OkHttpClient()

val mediaType = MediaType.parse("application/json")
val body = RequestBody.create(mediaType, "{}")
val request = Request.Builder()
  .url("https://api.valyx.com/external/creditNotes/upsert")
  .post(body)
  .addHeader("X-Valyx-Signature", "<x-valyx-signature>")
  .addHeader("Content-Type", "application/json")
  .build()

val response = client.newCall(request).execute()

using RestSharp;


var options = new RestClientOptions("https://api.valyx.com/external/creditNotes/upsert");
var client = new RestClient(options);
var request = new RestRequest("");
request.AddHeader("X-Valyx-Signature", "<x-valyx-signature>");
request.AddJsonBody("{}", false);
var response = await client.PostAsync(request);

Console.WriteLine("{0}", response.Content);

false

{}