curl --request GET \
  --url https://api.example.com/v1/invoices \
  --header 'X-API-Key: <api-key>'

import requests

url = "https://api.example.com/v1/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.example.com/v1/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/v1/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.example.com/v1/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.example.com/v1/invoices")
  .header("X-API-Key", "<api-key>")
  .asString();

require 'uri'
require 'net/http'

url = URI("https://api.example.com/v1/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

{
  "items": [
    {
      "id": "ckxinv042",
      "publicId": "ckpub042",
      "orgId": "ckorg001",
      "buyerId": "ckbuy001",
      "buyerEmail": "buyer@acme.com",
      "buyerName": "ACME Imports LLC",
      "sellerConnectedAccountId": "ckacc042",
      "sellerExternalId": "seller-42",
      "sellerName": "Fazenda Boa Vista",
      "status": "draft",
      "currency": "USD",
      "amount": "12500.00",
      "requestNetworkId": null,
      "paymentChain": "base",
      "paymentAddress": "0x5fbe…a91c",
      "dueDate": null,
      "expiresAt": null,
      "cancelReason": null,
      "pendingApproval": false,
      "buyerRef": null,
      "dueNumber": null,
      "exportContractRef": null,
      "incoterm": null,
      "portOfLoading": null,
      "feeBps": 50,
      "feeAmount": "62.50",
      "brlSettledAmount": null,
      "fxRateAtSettlement": null,
      "createdAt": "2026-06-30T12:00:00.000Z",
      "updatedAt": "2026-06-30T12:00:00.000Z",
      "lineItems": [
        {
          "id": "ckli001",
          "description": "Order #42 — green coffee, 18t",
          "quantity": "1",
          "unitPrice": "12500.00",
          "subtotal": "12500.00",
          "ncmCode": null,
          "originState": null
        }
      ],
      "timeline": [
        {
          "id": "ckev001",
          "invoiceId": "ckxinv042",
          "type": "created",
          "source": "caratuva",
          "externalEventId": null,
          "occurredAt": "2026-06-30T12:00:00.000Z"
        }
      ]
    }
  ],
  "nextCursor": null
}