curl --request GET \
  --url https://api.example.com/subscriptions/{id}/invoices \
  --header 'client_id: <api-key>' \
  --header 'secret_key: <api-key>'

import requests

url = "https://api.example.com/subscriptions/{id}/invoices"

headers = {
    "client_id": "<api-key>",
    "secret_key": "<api-key>"
}

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

print(response.text)

const options = {method: 'GET', headers: {client_id: '<api-key>', secret_key: '<api-key>'}};

fetch('https://api.example.com/subscriptions/{id}/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.example.com/subscriptions/{id}/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 => [
    "client_id: <api-key>",
    "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"
	"net/http"
	"io"
)

func main() {

	url := "https://api.example.com/subscriptions/{id}/invoices"

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

	req.Header.Add("client_id", "<api-key>")
	req.Header.Add("secret_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.example.com/subscriptions/{id}/invoices")
  .header("client_id", "<api-key>")
  .header("secret_key", "<api-key>")
  .asString();

require 'uri'
require 'net/http'

url = URI("https://api.example.com/subscriptions/{id}/invoices")

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

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

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

[
  {
    "id": "<string>",
    "number": 123,
    "customer": {
      "id": "<string>",
      "name": "<string>",
      "federalTaxId": "<string>",
      "contact": {
        "phone": {
          "countryCode": "<string>",
          "areaCode": "<string>",
          "phoneNumber": "<string>"
        },
        "email": "<string>"
      },
      "address": {
        "street": "<string>",
        "number": "<string>",
        "neighborhood": "<string>",
        "city": "<string>",
        "state": "<string>",
        "zipCode": "<string>",
        "country": "<string>",
        "complement": "<string>"
      },
      "createdAt": "<string>",
      "externalCode": "<string>"
    },
    "supplier": {
      "id": "<string>",
      "name": "<string>",
      "businessName": "<string>",
      "federalTaxId": "<string>",
      "address": {
        "street": "<string>",
        "number": "<string>",
        "neighborhood": "<string>",
        "city": "<string>",
        "state": "<string>",
        "zipCode": "<string>",
        "country": "<string>",
        "complement": "<string>"
      },
      "createdAt": "<string>",
      "contact": {
        "phone": {
          "countryCode": "<string>",
          "areaCode": "<string>",
          "phoneNumber": "<string>"
        },
        "email": "<string>"
      },
      "externalCode": "<string>"
    },
    "referenceStartDate": "<string>",
    "referenceEndDate": "<string>",
    "items": [
      {
        "id": "<string>",
        "invoiceId": "<string>",
        "componentId": "<string>",
        "transactionId": "<string>",
        "description": "<string>",
        "price": "<string>",
        "referencePeriod": {
          "startDate": "<string>",
          "endDate": "<string>"
        },
        "createdAt": "<string>",
        "metadata": {},
        "externalCode": "<string>",
        "idempotencyKey": "<string>"
      }
    ],
    "createdAt": "<string>",
    "totalPrice": "<string>",
    "dueDate": "<string>",
    "description": "<string>",
    "externalCode": "<string>",
    "issuedAt": "<string>",
    "canceledAt": "<string>",
    "metadata": {},
    "brokerReconciliationId": "<string>"
  }
]