> For the complete documentation index, see [llms.txt](https://docs.aurowallet.com/general/llms.txt). Markdown versions of documentation pages are available by appending `.md` to page URLs; this page is available as [Markdown](https://docs.aurowallet.com/general/reference/api-reference/methods/mina_sendstakedelegation.md).

# mina\_sendStakeDelegation

This method is used by zkApp to call Auro Wallet stake delegation.

### Params

```typescript
type SendStakeDelegationArgs  = {
    // block producer address. require base58 address.
    readonly to: string,
    // option. Auro Wallet also provide advance option to change fee.
    readonly fee?: number,
    // option.
    readonly memo?:string
}
```

### Result

```typescript
type SendTransactionResult = {
    // broadcast hash, you can query tx info by this hash.
    hash: string
}

interface ProviderError extends Error {
    message: string; // error message.
    code: number; // error code.
    data?: unknown; // error body. 
}

Promise<SendTransactionResult | ProviderError>
```

### Errors

|       |                                            |                                |
| ----- | ------------------------------------------ | ------------------------------ |
| 1001  | User disconnect, need connect Auro Wallet. | Can not get connected account. |
| 1002  | user reject transaction.                   |                                |
| 20003 | The parameters were invalid.               | Please check address, fee.     |
| 23001 | Origin dismatch.                           | Check origin safe.             |

## Example

### Request

```typescript
const vaildatorAddress = "B62qq3TQ8AP7MFYPVtMx5tZGF3kWLJukfwG1A1RGvaBW1jfTPTkDBW6"
const fee = 0.011
const memo = ""

await window.mina?.sendStakeDelegation({
    to: vaildatorAddress,
    fee: fee, // option. If not use, can delet this params.
    memo: memo, // option. If not use, can delet this params.
}).catch((err: any) => err);
```

### Result

```typescript
// successful result.
{
  "hash": "CkpYTcQv2obKrD78X7QoHF9j3CfmQWNjNb8UFeDaCVRjcGZpUdxUz"
}

// user reject.
{
  "code": 1002,
  "message": "User rejected the request."
}

// can not get connect address.
{
  "code": 1001,
  "message": "User disconnect, please connect first."
}

// params check error. there check addres and fee.
{
  "code": 20003,
  "message": "Invalid method parameter(s)."
}
```


---

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