# Approve ERC20Token

ERC Token can be approved using this method. The weightage for this API is 5

## API Specification

## Approve ERC20Token

<mark style="color:green;">`POST`</mark> `https://api.krypcore.com/api/v0/ft-manager/approveFT`

ERC Token can be approved under the given instance.&#x20;

#### Headers

| Name                                            | Type   | Description                      |
| ----------------------------------------------- | ------ | -------------------------------- |
| Authorization<mark style="color:red;">\*</mark> | String | User Auth Key obtained from Dash |
| DappId<mark style="color:red;">\*</mark>        | String | DappId                           |

#### Request Body

| Name                                                         | Type   | Description                                                                   |
| ------------------------------------------------------------ | ------ | ----------------------------------------------------------------------------- |
| chainId<mark style="color:red;">\*</mark>                    | String | The Chain ID to specify the blockchain network.                               |
| approveAddress<mark style="color:red;">\*</mark>             | String | Address that requires approval to manage ERC20 tokens on token owner's behalf |
| custodialWalletAccessToken<mark style="color:red;">\*</mark> | String | The access token for the custodial wallet                                     |
| contractAddress<mark style="color:red;">\*</mark>            | String | The contract address of the ERC20 token                                       |
| quantity<mark style="color:red;">\*</mark>                   | String | The quantity of ERC20 tokens to approve                                       |
| walletType<mark style="color:red;">\*</mark>                 | String | The type of wallet being used                                                 |

{% tabs %}
{% tab title="200: OK ERC20 Token Created Successfully" %}

```javascript
{
    "Data": {
        "referenceId": "xxxxxxxxxxxxx",
        "txnHash": ""
    },
    "Message": "ERC20 Token Created Successfully",
    "Status": "SUCCESS"
}
```

{% endtab %}

{% tab title="400: Bad Request No / multiple instances found" %}

```javascript
{
    "Status": "FAILURE",
    "Code": 400,
    "Message": "no / multiple instances found"
}
```

{% endtab %}

{% tab title="401: Unauthorized Failure in authentication" %}

```javascript
{"message":"Invalid API key in request"}
```

{% endtab %}

{% tab title="500: Internal Server Error Chain id is missing" %}

```javascript
{
    "Data": null,
    "Message": "Mandatory params missing",
    "Status": "FAILURE"
}
```

{% endtab %}
{% endtabs %}

Take a look at how you might call this method using our official libraries, or via `curl`:

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

```bash
curl --location --request POST 'https://api.krypcore.com/api/v0/ft-manager/approveFT' \
--header 'Authorization: xxxxxxxxxxxx' \
--header 'DappId: xxxxxxxxxxxx' \
--header 'ChainId: xxxx' \
--header 'Content-Type: application/json' \
--data '{
  "approveAddress": "0x688612BD8e65FF693070A875b6a49672502a0707",
  "chainId": "xxxx",
  "contractAddress": "0xa9BCB7E413FfE96575390c6F44F54607b44F030a",
  "custodialWalletAccessToken": "d263d546-ccc2-4676-9691-d28c3f836822",
  "quantity": "1000000000000000000",
  "walletType": "non-custodial"
}'
```

{% endtab %}

{% tab title="Node.js (Fetch)" %}

```javascript
const axios = require('axios');
let data = JSON.stringify({
 "approveAddress": "0x688612BD8e65FF693070A875b6a49672502a0707",
  "chainId": "xxxx",
  "contractAddress": "0xa9BCB7E413FfE96575390c6F44F54607b44F030a",
  "custodialWalletAccessToken": "d263d546-ccc2-4676-9691-d28c3f836822",
  "quantity": "1000000000000000000",
  "walletType": "non-custodial"
});

let config = {
  method: 'post',
  maxBodyLength: Infinity,
  url: 'https://api.krypcore.com/api/v0/ft-manager/approveFT',
  headers: { 
    'Authorization': 'xxxxxxxxxxxx', 
    'DappId': 'xxxxxxxxxxxx', 
    'ChainId': 'xxxx',
    'Content-Type': 'application/json'
  },
  data : data
};

axios.request(config)
.then((response) => {
  console.log(JSON.stringify(response.data));
})
.catch((error) => {
  console.log(error);
});

```

{% endtab %}

{% tab title="Python " %}

```python
import requests
import json

url = "https://api.krypcore.com/api/v0/ft-manager/approveFT"

payload = json.dumps({
  "approveAddress": "0x688612BD8e65FF693070A875b6a49672502a0707",
  "chainId": "xxxx",
  "contractAddress": "0xa9BCB7E413FfE96575390c6F44F54607b44F030a",
  "custodialWalletAccessToken": "d263d546-ccc2-4676-9691-d28c3f836822",
  "quantity": "1000000000000000000",
  "walletType": "non-custodial"
})
headers = {
  'Authorization': 'xxxxxxxxxxxx',
  'DappId': 'xxxxxxxxxxxx',
  'ChainId': 'xxxx',
  'Content-Type': 'application/json'
}

response = requests.request("POST", url, headers=headers, data=payload)

print(response.text)

```

{% endtab %}

{% tab title="Golang" %}

```go
package main

import (
  "fmt"
  "strings"
  "net/http"
  "io/ioutil"
)

func main() {

  url := "https://api.krypcore.com/api/v0/ft-manager/approveFT"
  method := "POST"

  payload := strings.NewReader(`{
  "approveAddress": "0x688612BD8e65FF693070A875b6a49672502a0707",
  "chainId": "xxxx",
  "contractAddress": "0xa9BCB7E413FfE96575390c6F44F54607b44F030a",
  "custodialWalletAccessToken": "d263d546-ccc2-4676-9691-d28c3f836822",
  "quantity": "1000000000000000000",
  "walletType": "non-custodial"
}`)

  client := &http.Client {
  }
  req, err := http.NewRequest(method, url, payload)

  if err != nil {
    fmt.Println(err)
    return
  }
  req.Header.Add("Authorization", "xxxxxxxxxxxx")
  req.Header.Add("DappId", "xxxxxxxxxxxx")
  req.Header.Add("ChainId", "xxxx")
  req.Header.Add("Content-Type", "application/json")

  res, err := client.Do(req)
  if err != nil {
    fmt.Println(err)
    return
  }
  defer res.Body.Close()

  body, err := ioutil.ReadAll(res.Body)
  if err != nil {
    fmt.Println(err)
    return
  }
  fmt.Println(string(body))
}
```

{% endtab %}
{% endtabs %}