curl --request GET \
  --url https://api.everhour.com/invoices \
  --header 'X-Api-Key: <api-key>'

import requests

url = "https://api.everhour.com/invoices"

headers = {"X-Api-Key": "<api-key>"}

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

print(response.text)

const options = {method: 'GET', headers: {'X-Api-Key': '<api-key>'}};

fetch('https://api.everhour.com/invoices', 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.everhour.com/invoices",
  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-Api-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"
	"net/http"
	"io"
)

func main() {

	url := "https://api.everhour.com/invoices"

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

	req.Header.Add("X-Api-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.get("https://api.everhour.com/invoices")
  .header("X-Api-Key", "<api-key>")
  .asString();

require 'uri'
require 'net/http'

url = URI("https://api.everhour.com/invoices")

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

request = Net::HTTP::Get.new(url)
request["X-Api-Key"] = '<api-key>'

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

[
  {
    "id": 2660155,
    "client": {
      "id": 4567,
      "name": "Client Name",
      "projects": [
        "ev:1234567890"
      ],
      "businessDetails": "<string>",
      "budget": {
        "type": "money",
        "budget": 100000,
        "period": "general",
        "appliedFrom": "<string>",
        "disallowOverbudget": true,
        "excludeUnbillableTime": true,
        "excludeExpenses": true,
        "threshold": 123,
        "progress": 0
      }
    },
    "createdAt": "2018-01-16 12:42:59",
    "createdBy": {
      "id": 1304,
      "name": "User Name",
      "role": "admin",
      "status": "active",
      "headline": "CEO",
      "avatarUrl": "<string>",
      "phone": "<string>",
      "capacity": 123,
      "avatarUrlLarge": "<string>"
    },
    "status": "draft",
    "dateFrom": "<string>",
    "dateTill": "<string>",
    "dueDate": "<string>",
    "discount": {
      "amount": 4581,
      "rate": 25
    },
    "expenseMask": "%PROJECT% :: %CATEGORY%",
    "includeExpenses": true,
    "includeTime": true,
    "invoiceItems": [
      {
        "billedTime": 415860,
        "createdAt": "2017-02-22 16:11:33",
        "custom": false,
        "id": 52,
        "listAmount": 288793,
        "name": "Software Development",
        "netAmount": 288793,
        "position": 1,
        "taxable": 1,
        "totalAmount": 288793
      }
    ],
    "issueDate": "2019-03-22",
    "limitDateFrom": "<string>",
    "limitDateTill": "<string>",
    "listAmount": 18325,
    "netAmount": 13744,
    "projects": [
      "gh:63301595"
    ],
    "publicId": "1020",
    "tax": {
      "id": 123,
      "rate": 11,
      "amount": 1512
    },
    "timeMask": "%PROJECT%",
    "totalAmount": 15256,
    "totalTime": 43980,
    "valid": true
  }
]