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

# CrossmintSolanaExternalWalletSigner

> Flutter Final Class

**Final Class**

Solana variant of `CrossmintExternalWalletSigner`. Signs transactions only — raw-message signing is not supported on Solana.

```dart theme={null}
final class CrossmintSolanaExternalWalletSigner extends CrossmintExternalWalletSigner
```

## Constructors

### CrossmintSolanaExternalWalletSigner

```dart theme={null}
CrossmintSolanaExternalWalletSigner({
  required super.address,
  super.locator,
  required super.onSign,
})
```

Creates a Solana external-wallet signer.

## Properties

### type

```dart theme={null}
String get type
```

## Methods

### signMessage

```dart theme={null}
Future<Object> signMessage(String message)
```

### signTransaction

```dart theme={null}
Future<Object> signTransaction(String transaction)
```