# getBalance

## Description

The `getBalance` function allows developers to retrieve the account balance of a specified public key on the Casper blockchain.

## Parameters

| Parameter   | Type   | Description                                               |
| ----------- | ------ | --------------------------------------------------------- |
| `publicKey` | string | The public key of the account to retrieve the balance for |
| `RPC_API`   | string | The RPC API endpoint of the Casper network                |

## Response

| Name      | Type   | Description                            |
| --------- | ------ | -------------------------------------- |
| `balance` | string | The balance of the account as a string |

## 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/casper-lib
OR
yarn add @nest25/casper-lib
```

### Request

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

```javascript
// import Nest25 Casper library
const { Casper } = require('@nest25/casper-lib');
// create a new Casper instance
const casper = new Casper();

const publicKey = '013a156a50fc6284ba436aedeaf96b55ac1a0c57ee9f8a46bf1c6518afe9b2f56c';
const RPC_API = 'https://rpc.testnet.casperlabs.io/rpc';

async function main() {
  let balance = await casper.getBalance(publicKey, RPC_API);
  console.log({ balance });
}
// call main function
main();
```

### Response

```sh
 { balance: '1975238447828' }
```

## Use Cases

* **Wallets:** The function can be used by cryptocurrency wallets to display the account balance of the user.
* **DApps:** The function can be used by decentralized applications on the Casper network to retrieve the account balance of a user.
* **Exchanges:** The function can be used by cryptocurrency exchanges to check the balance of user accounts before allowing them to make trades.

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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/casper-sdk/getbalance.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.