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

# Instantiation

<Info>
  Before doing anything with the SDK, we must instantiate it.
  This will set the sessionKey, chainId and all properties needed to authenticate and authorise the remote-signing
</Info>

Step 1. set .env variables via export or in your .env
If you chose to use them directly skip to Step-2

```sh theme={null}
export WALLET_PRIVATE_KEY=''
export CHAIN_ID=
export API_KEY=''
```

Step 2. Import the Etherspot RemoteSigner SDK.

```javascript theme={null}
  import { RemoteSignerSdk } from '@etherspot/remote-signer';
```

Step 2. Instantiate the SDK with below initialisation properties using this block of code.

* privateKey
* ChainID
* etherspotWalletAddress
* sessionKey
* bundlerApiKey

```javascript theme={null}
import { privateKeyToAccount } from 'viem/accounts';
import { Account, Hex } from "viem";
import * as dotenv from 'dotenv';
import { createLocalAccount, EtherspotBundler, ExtendedLocalAccount, getViemAccount, RemoteSignerSdk, toRemoteSigner } from '@etherspot/remote-signer';

const externalViemAccount = privateKeyToAccount(process.env.WALLET_PRIVATE_KEY as string as Hex);
const bundlerProvider = new EtherspotBundler(chainId, bundlerApiKey);
const bundlerApiKey = process.env.API_KEY as string;
const sessionKey = ''; // sessionKey generated by modularSDK
const apiKey = process.env.API_KEY as string;
const etherspotWalletAddress = ''; // your etherspotModularWallet address
const chainId = Number(process.env.CHAIN_ID);

const remoteSignerSdk = await RemoteSignerSdk.create(externalViemAccount, {
  etherspotWalletAddress: etherspotWalletAddress,
  chainId: chainId,
  apiKey: apiKey,
  sessionKey: sessionKey,
  bundlerProvider: bundlerProvider
});
```

And that's it! You're now ready to call any of the RemoteSigner SDK [functions.](/remote-signer-sdk/functions)

In the next page we'll take a look at the various functions the SDK offers.