curl --request POST \
  --url https://api.kraken.com/0/private/CreditLines \
  --header 'API-Key: <api-key>' \
  --header 'API-Sign: <api-key>' \
  --header 'Content-Type: application/json' \
  --data '
{
  "nonce": 123,
  "rebase_multiplier": "rebased"
}
'

{
  "error": [],
  "result": {
    "asset_details": {
      "USD": {
        "balance": "1000.5000",
        "credit_limit": "50000.0000",
        "credit_used": "12500.0000",
        "available_credit": "37500.0000"
      },
      "EUR": {
        "balance": "500.2500",
        "credit_limit": "25000.0000",
        "credit_used": "5000.0000",
        "available_credit": "20000.0000"
      }
    },
    "limits_monitor": {
      "total_credit_usd": "100000.0000",
      "total_credit_used_usd": "25000.0000",
      "total_collateral_value_usd": "150000.0000",
      "equity_usd": "125000.0000",
      "ongoing_balance": "1.5000",
      "debt_to_equity": "0.2000"
    }
  }
}