> ## Documentation Index
> Fetch the complete documentation index at: https://build.flashnet.xyz/llms.txt
> Use this file to discover all available pages before exploring further.

# Setup

> Install the SDK and initialize a Flashnet client with your Spark wallet

Before you can interact with Flashnet AMM, you need to set up the Flashnet SDK and initialize a client with your wallet. This guide will walk you through the installation and initialization process.

## Installation

Install the required packages:

```bash theme={null}
npm install @flashnet/sdk @buildonspark/spark-sdk
# or
yarn add @flashnet/sdk @buildonspark/spark-sdk
# or
bun add @flashnet/sdk @buildonspark/spark-sdk
```

## Initialization

Create a new instance of the Flashnet client with your Spark wallet:

```typescript theme={null}
import { FlashnetClient } from '@flashnet/sdk';
import { SparkWallet } from '@buildonspark/spark-sdk';

// Initialize your Spark wallet
const { wallet } = await SparkWallet.initialize({
  mnemonicOrSeed:
    process.env.MNEMONIC,
  options: {
    network: "REGTEST",
  },
});

// Create the Flashnet client
const client = new FlashnetClient(wallet);

await client.initialize();

// The client will automatically:
// - Authenticate with the AMM service
// - Handle all signing and intent generation
```

## Using the Spark wallet from the client

The client can also be used as a regular Spark wallet:

```typescript theme={null}
import { FlashnetClient } from '@flashnet/sdk';
import { SparkWallet } from '@buildonspark/spark-sdk';

// Initialize your Spark wallet
const { wallet } = await SparkWallet.initialize({
  mnemonicOrSeed:
    process.env.MNEMONIC,
  options: {
    network: "REGTEST",
  },
});

// Create the Flashnet client
const client = new FlashnetClient(wallet);

await client.initialize();

const invoice = await client.wallet.createLightningInvoice({
  amountSats: 1000000,
  memo: "Test invoice",
});

console.log(invoice);
```