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

# exportKey

> Exports wallet key data

## Function Signature

```typescript theme={"system"}
exportKey(params: {
  accountAddress: string;
  chainName: string;
  walletMetadata: WalletMetadata;
  externalServerKeyShares?: ServerKeyShare[];
  password?: string;
}): Promise<{ derivedPrivateKey: string }>
```

## Description

Exports a key for the wallet identified by `walletMetadata`. This is the base-class operation that `exportPrivateKey()` builds on; most callers should use [`exportPrivateKey()`](/node/reference/svm/export-private-key) directly.

<Warning>
  When you pass `externalServerKeyShares` (the caller-supplied path), `walletMetadata.externalServerKeySharesBackupInfo` must also be present — `exportKey` throws if shares are supplied but backup metadata is missing. The full `walletMetadata` returned from `createWalletAccount` / `importPrivateKey` already includes it; identity-only metadata from `fetchWalletMetadata` will be rejected.
</Warning>

## Parameters

### Required Parameters

* **`accountAddress`** (`string`) - The wallet address. Must match `walletMetadata.accountAddress`.
* **`chainName`** (`string`) - The chain name (e.g., `'SVM'`)
* **`walletMetadata`** ([`WalletMetadata`](/node/reference/types/wallet-metadata)) - The cached metadata for this wallet

### Optional Parameters

* **`externalServerKeyShares`** ([`ServerKeyShare[]`](/node/reference/types/server-key-share)) - Caller-supplied plaintext shares.
* **`password`** (`string`) - Required if the wallet was created with `backUpToDynamic: true`.

## Returns

* **`Promise<{ derivedPrivateKey: string }>`** - The derived private key

## Example

```typescript theme={"system"}
import { authenticatedSvmClient } from './client';

const svmClient = await authenticatedSvmClient();

const walletMetadata = JSON.parse(await redis.get(`wallet:${accountAddress}`));
const externalServerKeyShares = await vault.read(`wallet:${accountAddress}/shares`);

const { derivedPrivateKey } = await svmClient.exportKey({
  accountAddress,
  chainName: 'SVM',
  walletMetadata,
  externalServerKeyShares,
  password: 'user-password',
});
```

## Related

* [`exportPrivateKey()`](/node/reference/svm/export-private-key) - Customer-friendly export wrapper