# Get Allowance

Before making use of yBridge, you must approve the contract first to proceed with the token spend. You could get the allowance and see whether you are willing to approve yBridge to execute swaps on your behalf via this API.

## Get the allowance of token

<mark style="color:blue;">`GET`</mark> `endpoint/approval`

#### Query Parameters

| Name                                           | Type   | Description             |
| ---------------------------------------------- | ------ | ----------------------- |
| chainId<mark style="color:red;">\*</mark>      | String | chain ID                |
| owner<mark style="color:red;">\*</mark>        | String | Address of token holder |
| spender<mark style="color:red;">\*</mark>      | String | Address of the spender  |
| tokenAddress<mark style="color:red;">\*</mark> | String | Token address           |

{% tabs %}
{% tab title="200: OK Success" %}

```javascript
{
    "isSuccess": true,
    "msg": '',
    "chainId": "1",
    "tokenAddress": "0xdAC17F958D2ee523a2206206994597C13D831ec7",
    "owner": "0x0000000000000000000000000000000000000000",
    "spender": "0x0000000000000000000000000000000000000000",
    "allowance": 0
}
```

{% endtab %}
{% endtabs %}

{% hint style="info" %}
**`NOTE :`**` ``The spender should be the contractAddress in the response of` [`Get Quote`](https://app.gitbook.com/s/-Mcs9EhDrgbKHodtcAT6/~/changes/HTPvqHWDmiwzKo005mtN/xswap-api/v1/get-quote)`.`
{% endhint %}


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