curl --request GET \
  --url https://api.maesn.dev/accounting/openItems \
  --header 'X-ACCOUNT-KEY: <x-account-key>' \
  --header 'X-API-KEY: <x-api-key>'

import requests

url = "https://api.maesn.dev/accounting/openItems"

headers = {
    "X-API-KEY": "<x-api-key>",
    "X-ACCOUNT-KEY": "<x-account-key>"
}

response = requests.get(url, headers=headers)

print(response.text)

const options = {
  method: 'GET',
  headers: {'X-API-KEY': '<x-api-key>', 'X-ACCOUNT-KEY': '<x-account-key>'}
};

fetch('https://api.maesn.dev/accounting/openItems', 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.maesn.dev/accounting/openItems",
  CURLOPT_RETURNTRANSFER => true,
  CURLOPT_ENCODING => "",
  CURLOPT_MAXREDIRS => 10,
  CURLOPT_TIMEOUT => 30,
  CURLOPT_HTTP_VERSION => CURL_HTTP_VERSION_1_1,
  CURLOPT_CUSTOMREQUEST => "GET",
  CURLOPT_HTTPHEADER => [
    "X-ACCOUNT-KEY: <x-account-key>",
    "X-API-KEY: <x-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"
	"net/http"
	"io"
)

func main() {

	url := "https://api.maesn.dev/accounting/openItems"

	req, _ := http.NewRequest("GET", url, nil)

	req.Header.Add("X-API-KEY", "<x-api-key>")
	req.Header.Add("X-ACCOUNT-KEY", "<x-account-key>")

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

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

	fmt.Println(string(body))

}

HttpResponse<String> response = Unirest.get("https://api.maesn.dev/accounting/openItems")
  .header("X-API-KEY", "<x-api-key>")
  .header("X-ACCOUNT-KEY", "<x-account-key>")
  .asString();

require 'uri'
require 'net/http'

url = URI("https://api.maesn.dev/accounting/openItems")

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

request = Net::HTTP::Get.new(url)
request["X-API-KEY"] = '<x-api-key>'
request["X-ACCOUNT-KEY"] = '<x-account-key>'

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

{
  "meta": {
    "warnings": [
      "Field not used by target system"
    ],
    "pagination": {
      "total": 125,
      "perPage": 50,
      "currentPage": 1,
      "totalPages": 3
    }
  },
  "data": [
    {
      "id": "8df2df10-0fae-40ad-9d22-f25e5ab0ba23",
      "accountId": "10fae-40ad-9d2df2df10-9d22-f44f5ab3eu",
      "accountName": "Vendor ABC",
      "accountNumber": "100100000",
      "createdDate": "2025-06-01T00:00:00Z",
      "currency": "EUR",
      "documentNumber": "INV-1",
      "entries": [
        {
          "amount": 1000,
          "currency": "EUR",
          "debitCreditIndicator": "DEBIT",
          "description": "Hotel stay",
          "dueDate": "2025-06-21T00:00:00Z",
          "postingDate": "2025-06-01T00:00:00Z"
        }
      ],
      "openBalance": {
        "amount": 1000,
        "debitCreditIndicator": "DEBIT"
      },
      "postingDate": "2025-06-01T00:00:00Z",
      "totalCreditAmount": 0,
      "totalDebitAmount": 1000,
      "updatedDate": "2025-06-12T00:00:00Z"
    }
  ]
}