# Get Protocol Config using userId and ChainId

The "Get Protocol Config" API endpoint provided by Krypcore allows users to retrieve protocol configurations under a given instance based on the provided user ID and Chain ID.

## API Specification

## Get Protocol Config

<mark style="color:green;">`POST`</mark> `https://api.krypcore.com/api/v0/gasless/getProtocolConfig/userIdAndChainId`

Get Protocol Config under the given instance.&#x20;

#### Headers

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

#### Request Body

| Name                                      | Type   | Description                                   |
| ----------------------------------------- | ------ | --------------------------------------------- |
| chainId<mark style="color:red;">\*</mark> | String | Chain ID representing the blockchain protocol |
| dAppId<mark style="color:red;">\*</mark>  | String | Dapp ID associated with the application.      |

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

```javascript
{
    "data": null,
    "message": "fetched protocol and gas config details",
    "status": true
}
```

{% endtab %}

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

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

{% 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 'https://web3-proxy-dev.krypcore.com/api/v0/gasless/getProtocolConfig/userIdAndChainId' \
--header 'Authorization: 81d4a427-xxxx-xxxx-xxxx-f8482816e872' \
--header 'Content-Type: application/json' \
--data '{"userId":"DEV_GSTE_75_xxxxxxxx","chainId":80001}
'
```

{% endtab %}

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

```javascript
var myHeaders = new Headers();
myHeaders.append("Authorization", "81d4a427-xxxx-xxxx-xxxx-f8482816e872");
myHeaders.append("Content-Type", "application/json");

var raw = JSON.stringify({
  "userId": "DEV_GSTE_75_xxxxxxxx",
  "chainId": 80001
});

var requestOptions = {
  method: 'POST',
  headers: myHeaders,
  body: raw,
  redirect: 'follow'
};

fetch("https://web3-proxy-dev.krypcore.com/api/v0/gasless/getProtocolConfig/userIdAndChainId", requestOptions)
  .then(response => response.text())
  .then(result => console.log(result))
  .catch(error => console.log('error', error));
```

{% endtab %}

{% tab title="Python " %}

```python
import requests
import json

url = "https://web3-proxy-dev.krypcore.com/api/v0/gasless/getProtocolConfig/userIdAndChainId"

payload = json.dumps({
  "userId": "DEV_GSTE_75_xxxxxxxx",
  "chainId": 80001
})
headers = {
  'Authorization': '81d4a427-xxxx-xxxx-xxxx-f8482816e872',
  '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://web3-proxy-dev.krypcore.com/api/v0/gasless/getProtocolConfig/userIdAndChainId"
  method := "POST"

  payload := strings.NewReader(`{"userId":"DEV_GSTE_75_xxxxxxxx","chainId":80001}`+"
"+`
`)

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

  if err != nil {
    fmt.Println(err)
    return
  }
  req.Header.Add("Authorization", "81d4a427-xxxx-xxxx-xxxx-f8482816e872")
  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 %}