curl --request GET \
  --url https://api.business-os.de/v2/banking/accounts \
  --header 'x-api-key: <api-key>'

{
  "data": [
    {
      "id": "8273645091827364509",
      "name": "DE89370400440532013000",
      "nature": "account",
      "balance": -5978.36,
      "currency_code": "EUR",
      "created_at": "2026-03-24T13:51:32+00:00",
      "updated_at": "2026-03-24T14:19:54+00:00",
      "extra": {
        "iban": "DE89370400440532013000",
        "holder_name": "Mustermann GmbH",
        "transactions_count": {
          "posted": 418,
          "pending": 1
        }
      }
    }
  ]
}