> For the complete documentation index, see [llms.txt](https://aliniex.gitbook.io/alix-pay/llms.txt). Markdown versions of documentation pages are available by appending `.md` to page URLs; this page is available as [Markdown](https://aliniex.gitbook.io/alix-pay/api-reference/alix-card-api/cards/check-topup-fee.md).

# Check topup fee

<mark style="color:orange;">`POST`</mark> /api/v2/cards/topup-check

This API allows you to check top-up fee in your card on Alix Platform&#x20;

**Headers**

| Param        | Value                                                                                                                   |
| ------------ | ----------------------------------------------------------------------------------------------------------------------- |
| access-token | It is accessToken  has returned from the [api Access Token](/alix-pay/api-reference/alix-card-api/auth/access-token.md) |

Request Body

```json
{
  "cardType": "GEC",
  "amount": "100" //USDT
}
```

<table><thead><tr><th width="164">Name</th><th width="82">Type</th><th width="110">Condition</th><th>Value</th></tr></thead><tbody><tr><td>cardType</td><td>string</td><td>required</td><td>the type of your card</td></tr><tr><td>amount</td><td>string</td><td>required</td><td>Amount of cryptocurrency, you want to top-up</td></tr></tbody></table>

**Response**&#x20;

{% tabs %}
{% tab title="200" %}

```json

{
    "success": true,
    "message": "Your request has been successful",
    "data": {
        "netAmount": 10.88,
        "fee": 0.12
    },
    "errorCode": 0
}

```

{% endtab %}

{% tab title="400" %}

<pre class="language-json"><code class="lang-json">{
    "success": false,
    "message": "The QR code is invalid. Please check and try again",
    "data": null,
    "errorCode": 32
}
<strong>
</strong>
</code></pre>

{% endtab %}
{% endtabs %}

{% hint style="warning" %}
**When the access token expired. Please use the refresh token to get new access token instead of get a new access token**&#x20;
{% endhint %}


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