# evm

## Description

The `estimateFee` function is used to estimate the fee required to perform a certain event on a specified blockchain network. The function calculates the gas price and the total fee required for a transfer event on the specified blockchain network.

## Parameters

| Parameter    | Data Type | Description                                                                                       |
| ------------ | --------- | ------------------------------------------------------------------------------------------------- |
| `event`      | string    | The event for which the fee needs to be estimated. Currently, only "transfer" event is supported. |
| `blockchain` | string    | The name of the blockchain network for which the fee needs to be estimated.                       |
| `env`        | string    | The environment of the blockchain network.                                                        |

## Response

| Field    | Data Type | Description                                                                      |
| -------- | --------- | -------------------------------------------------------------------------------- |
| `code`   | number    | The status code of the response. 1 indicates success, while 0 indicates failure. |
| `result` | string    | The estimated fee for the specified event on the specified blockchain network.   |
| `error`  | string    | The error message in case of any errors during the execution of the function.    |

## Example Request and Response

### Prerequisites

Before making requests with Volary SDK, you must have it installed.

You can install Volary SDK using either **`npm`** or **`yarn`**. Use the following commands to install Volary SDK:

```sh
npm install @nest25/wallet-lib
OR
yarn add @nest25/wallet-lib
```

### Request

Here is an example of how to make a `estimateFee` request using the Volary SDK:

```javascript
// import Nest SDK
import { Wallet } from 'nest25/wallet-lib';

// Create a new instance of the Wallet class
const wallet = new Wallet();

const main = async () => {
  // estimate the fee for a transfer
  const response = await wallet.estimateFee('eth', 'transfer');
  // print the response
  console.log(response);
};

main();
```

{% code overflow="wrap" %}

```javascript
```

{% endcode %}

### Response

{% code overflow="wrap" %}

```sh
   { code: 1, result: '0.0017211828095280001' }
```

{% endcode %}

## Use Cases

* **Crypto Wallets:** Crypto wallets can use this function to estimate the fee required for a transfer event on a specified blockchain network before initiating the transaction.
* **Developers:** DApp developers can use this function to provide users with an estimated fee for their transactions on the specified blockchain network.

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# Agent Instructions: Querying This Documentation

If you need additional information that is not directly available in this page, you can query the documentation dynamically by asking a question.

Perform an HTTP GET request on the current page URL with the `ask` query parameter:

```
GET https://docs.volary.io/sdks-guide/blockchain-sdks/wallet-sdk/estimatefee/evm.md?ask=<question>
```

The question should be specific, self-contained, and written in natural language.
The response will contain a direct answer to the question and relevant excerpts and sources from the documentation.

Use this mechanism when the answer is not explicitly present in the current page, you need clarification or additional context, or you want to retrieve related documentation sections.