curl --request GET \
  --url https://api.filexpress.app/api/external/expenses/{id} \
  --header 'X-API-Key: <api-key>'

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

fetch('https://api.filexpress.app/api/external/expenses/{id}', options)
  .then(res => res.json())
  .then(res => console.log(res))
  .catch(err => console.error(err));

import requests

url = "https://api.filexpress.app/api/external/expenses/{id}"

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

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

print(response.text)

<?php

$curl = curl_init();

curl_setopt_array($curl, [
  CURLOPT_URL => "https://api.filexpress.app/api/external/expenses/{id}",
  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;
}

{
  "status": true,
  "data": {
    "expense_id": "9d1c5a3e-4b7f-4e2a-9c1d-2f6b8a0e7c11",
    "generation_code": "A1B2C3D4-...",
    "control_number": "DTE-03-...",
    "document_type": "ccf",
    "status": "processed",
    "issue_time": "2026-10-01 10:00:00",
    "payment_status": "pending",
    "is_credit": true,
    "provider": {
      "id": "9d1c5a3e-4b7f-4e2a-9c1d-2f6b8a0e7c11",
      "legal_name": "Distribuidora XYZ S.A. de C.V.",
      "provider_name": "Distribuidora XYZ"
    },
    "totals": {
      "expense_total": 45.2,
      "expense_to_payment": 45.2
    },
    "products": [
      {
        "sku": "INS-001",
        "name": "Insumo A",
        "quantity": 5,
        "individual_price": 8,
        "subtotal": 40
      }
    ]
  }
}

{
  "status": false,
  "message": "Invalid API Key."
}

{
  "status": false,
  "message": "This integration does not have the 'hr.employees' permission.",
  "required_scope": "hr.employees"
}

{
  "status": false,
  "message": "Not found."
}

{
  "status": false,
  "message": "Rate limit exceeded. Please try again later.",
  "rate_limit": 100
}