# NativeDelegateBuilder

Builds a native delegate (stake) transaction to stake CSPR with a validator.

## Import

```ts
import { NativeDelegateBuilder, PublicKey } from 'casper-js-sdk';
```

## Usage

```ts
const transaction = new NativeDelegateBuilder()
  .from(delegatorPublicKey)
  .validator(validatorPublicKey)
  .amount('500000000000')  // 500 CSPR
  .chainName('casper')
  .payment(2_500_000_000)
  .build();

transaction.sign(privateKey);
const result = await rpcClient.putTransaction(transaction);
```

## Methods

### .from(publicKey)

- **Type:** `PublicKey` - required

The delegator's public key.

### .validator(publicKey)

- **Type:** `PublicKey` - required

The validator to delegate to.

### .amount(motes)

- **Type:** `BigNumber | string` - required

Amount to stake in motes.

### .chainName(name)

- **Type:** `string` - required

### .payment(motes)

- **Type:** `number` - optional

Gas payment in motes.

## Return Value

`Transaction`

## Notes

- Minimum delegation is `500_000_000_000` motes (500 CSPR) on mainnet.
- Delegated stake earns rewards each era (approximately every 2 hours).
- Use [`NativeUndelegateBuilder`](/builders/NativeUndelegateBuilder) to unstake.

## Related

- [`NativeUndelegateBuilder`](/builders/NativeUndelegateBuilder)
- [`NativeRedelegateBuilder`](/builders/NativeRedelegateBuilder)
- [`makeAuctionManagerDeploy`](/utilities/makeAuctionManagerDeploy)