> For the complete documentation index, see [llms.txt](https://docs-swft.swft.pro/llms.txt). Markdown versions of documentation pages are available by appending `.md` to page URLs; this page is available as [Markdown](https://docs-swft.swft.pro/zhong-xin-hua-dui-huan-api-jie-kou/huo-qu-dan-ge-bi-zhong-zi-chan-ke-yong-yu-e.md).

# 获取单个币种资产可用余额

### **1. 接口调用：**

 `https://{host}/open/api/availableAmt`

### **2. 请求参数**

| 参数           | 是否必须 | 说明                                      |
| ------------ | ---- | --------------------------------------- |
| currencyType | 是    | 币种简称，例如BTC                              |
| isDeductFee  | 否    | 返回的可用余额是否显示扣除提币手续费的金额，Y或者空显示，N则显示真实可用金额 |

### 3.请求参数示例

```
 {
     "channelId":"zml-test",
     "currencyType":"SWFTC",
     "sign":"102027D292DD0707E0D899459D91C759858D7367D223CB239A8EC3A90C30B122",
     "timestamp":1557653925555
 }
```

### 4.Postman示例

![](/files/MW02Mk7Ve0qypWwyIEHn)

### 5.返回结果示例

```
 {
     "data": {
         "availableAmount": "29363.143631",
         "withdrawFee": "0",
     },
     "resCode": "800",
     "resMsg": "成功"
 }
```

### 6.返回参数说明

| 字段名称         | 是否数组 | 字段              | 数据类型   | 数据长度 | 必须项 | 备注       |
| ------------ | ---- | --------------- | ------ | ---- | --- | -------- |
| 用户该币种可用余额    | N    | availableAmount | String | 20   | Y   | eg: 1.12 |
| 提币手续费（网络手续费） | N    | withdrawFee     | String | 20   |     | eg: 0.01 |