> ## Documentation Index
> Fetch the complete documentation index at: https://docs.tbox.io/llms.txt
> Use this file to discover all available pages before exploring further.

# Fees & Limits

> Your trading fee, product whitelist, and per-product order-value limits.

Your account has a **trading fee** and, optionally, **per-product trading
rules** (a product whitelist and min/max order **values**). You can read both at
any time, and orders that break a rule are rejected with a clear message.

Both endpoints require the **`read:account`** claim on your API key.

## Your trading fee

Fees are applied as a **markup percent** on your fills. Each client has its own
rate; if one hasn't been set for you, the platform default applies.

```
GET /api/v1/trading/account/fees
```

```json theme={null}
{ "markupPercent": 0.30 }
```

`markupPercent` is a percent — `0.30` means **0.30%**. The fee is deducted from
the filled amount (the base asset on a BUY, the quote on a SELL) and reflected
on each order's `fees` / `totalUserRecieveAmount`.

## Your account settings

One call returns your fee plus every product you may trade with its effective
limits — use it to drive your order forms.

```
GET /api/v1/trading/account/settings
```

```json theme={null}
{
  "markupPercent": 0.30,
  "restricted": true,
  "products": [
    { "productId": "BTC-USD", "base": "BTC", "quote": "USD", "quoteCurrency": "USD", "minOrderSize": "10", "maxOrderSize": "100000" },
    { "productId": "ETH-EUR", "base": "ETH", "quote": "EUR", "quoteCurrency": "EUR", "minOrderSize": "5",  "maxOrderSize": null }
  ]
}
```

* **`restricted`** — always `true`: your account is a **whitelist**, so the
  `products` listed are the only ones you may trade. An empty `products` array
  means you have not been granted any products yet and cannot trade.
* **`products`** — the products you may trade. `minOrderSize` / `maxOrderSize`
  are the **order value in the quote currency** (`quoteCurrency`) — e.g. a
  minimum of 10 USD and a maximum of 100,000 USD per order. `null` means no
  platform bound on that side (the exchange's own limit still applies).

## How rules affect orders

When you place an order, these rules are checked **before** it reaches the
exchange. The order **value** is measured in the quote currency, and how it's
derived depends on the [order type](/guides/orders):

* **LIMIT** (and STOP\_LIMIT) — `base_quantity × price`.
* **MARKET BUY** — the `quote_value` you send (the spend).
* **MARKET SELL** — the value isn't known at submit time, so the platform
  min/max bounds are **skipped** (the exchange's own limits still apply).

A violation returns **HTTP 400** with a descriptive `message`:

| Situation                           | Example message                                                         |
| ----------------------------------- | ----------------------------------------------------------------------- |
| Product not offered by the platform | `Product DOGE-USD is not available for trading.`                        |
| Product not in your whitelist       | `Product DOGE-USD is not enabled for your account.`                     |
| Below the minimum                   | `Order value 5.00 USD is below the minimum 10 USD for BTC-USD.`         |
| Above the maximum                   | `Order value 250000.00 USD exceeds the maximum 100000 USD for BTC-USD.` |

```json theme={null}
{
  "statusCode": 400,
  "message": "Order value 250000.00 USD exceeds the maximum 100000 USD for BTC-USD.",
  "error": "Bad Request"
}
```

Your account can only trade products that have been granted to it. If your
`products` list is empty, you have no tradable products yet — contact your
account manager to have products enabled.

Call `GET /account/settings` before building order forms so you can validate
locally and surface the right limits to your users. See [Orders](/guides/orders)
for the order payload and [Errors & Rate Limits](/guides/errors) for the full
status-code reference.