# evm

## Description

The `isMnemonic` function is used to validate the format and correctness of a mnemonic phrase. It accepts a mnemonic phrase as a string and an optional `wordlist` parameter, which represents the wordlist used to generate the mnemonic (default is the English wordlist). The function returns a boolean value indicating whether the mnemonic is valid or not.

## Parameters

| Parameter  | Data Type | Description                                                                |
| ---------- | --------- | -------------------------------------------------------------------------- |
| `mnemonic` | string    | The mnemonic phrase to be validated.                                       |
| `wordlist` | Wordlist  | (Optional) The wordlist used to generate the mnemonic. Default is English. |

## Response

| Field          | Data Type | Description                                                    |
| -------------- | --------- | -------------------------------------------------------------- |
| `return value` | boolean   | Indicates whether the mnemonic is valid (true) or not (false). |

## Example Request and Response

### Prerequisites

Before making requests with NO.AI SDK, you must have it installed.

You can install NO.AI SDK using either **`npm`** or **`yarn`**. Use the following commands to install NO.AI SDK:

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

### Request

Here is an example of how to make a `isMnemonic` request using the NO.AI SDK:

```javascript
const { Wallet } = require('@nest25/wallet-lib');

const wallet = new Wallet('');

async function main() {
  const response = await wallet.isMnemonic(
    'labor shaft stick degree figure trade outdoor deposit urge clog cattle feed',
  );
  console.log(response);
}

main();

```

### Response

{% code overflow="wrap" %}

```sh
  { true }
```

{% endcode %}

## Use Cases

* **Validating a mnemonic phrase:** By invoking this function with a mnemonic phrase, you can check if the provided mnemonic is in the correct format and corresponds to a valid mnemonic phrase.
* **Custom wordlist support:** You can optionally provide a custom `wordlist` parameter if the mnemonic was generated using a different wordlist than the default English wordlist.