> ## Documentation Index
> Fetch the complete documentation index at: https://docs.lfg.land/llms.txt
> Use this file to discover all available pages before exploring further.
# LocalWallet
> Wallet management and transaction signing
## Overview
`LocalWallet` handles cryptographic key management and transaction signing for the LFG SDK.
```typescript theme={null}
import { LocalWallet } from "@oraichain/lfg-client-js";
```
## Static Methods
### fromMnemonic()
Create a wallet from a BIP39 mnemonic phrase.
```typescript theme={null}
const wallet = await LocalWallet.fromMnemonic(
"your twelve word mnemonic phrase goes here",
"lfg"
);
```
12 or 24-word BIP39 mnemonic phrase
Address prefix (use `"lfg"` for LFG DEX)
**Returns**: `Promise`
### fromPrivateKey()
Create a wallet from a private key.
```typescript theme={null}
const wallet = await LocalWallet.fromPrivateKey("0xYourPrivateKeyHex", "lfg");
```
Private key as hex string (with or without `0x` prefix)
Address prefix (use `"lfg"`)
**Returns**: `Promise`
## Properties
### address
The wallet's public address.
```typescript theme={null}
console.log(wallet.address); // "lfg1..."
```
**Type**: `string`
### pubKey
The wallet's public key.
```typescript theme={null}
console.log(wallet.pubKey?.value); // Public key bytes
```
**Type**: `PubKey | undefined`
## Usage Examples
### Environment Variables
```typescript theme={null}
// From mnemonic
const wallet = await LocalWallet.fromMnemonic(process.env.MNEMONIC!, "lfg");
// From private key
const wallet = await LocalWallet.fromPrivateKey(
process.env.PRIVATE_KEY!,
"lfg"
);
```
### Wallet Factory
```typescript theme={null}
async function createWallet(): Promise {
if (process.env.MNEMONIC) {
return await LocalWallet.fromMnemonic(process.env.MNEMONIC, "lfg");
} else if (process.env.PRIVATE_KEY) {
return await LocalWallet.fromPrivateKey(process.env.PRIVATE_KEY, "lfg");
}
throw new Error("No wallet credentials found");
}
```
Never commit private keys or mnemonics to version control. Always use
environment variables or secure secret management.
## Related
Complete wallet management guide
Create trading subaccounts
Security best practices