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# `l2.buildDepositTransaction`

Prepares the parameters required to submit a [deposit transaction](/op-stack/deposits) on L1 and execute it on an OP Stack L2.

## Usage

Prepare a deposit that mints one native token on L2.

:::code-group
```ts twoslash [example.ts]
import { Value } from 'viem/utils'
import { client } from './viem.config'

const deposit = await client.deposit.buildDepositTransaction({ // [!code focus:4]
  mint: Value.fromEther('1'),
  to: '0x70997970c51812dc3a010c7d01b50e0d17dc79c8',
})
// @log: { account: undefined, request: { gas: 23660n, mint: 1000000000000000000n, to: '0x7099...' }, targetChain: { ... } }
```

```ts twoslash [viem.config.ts] filename="viem.config.ts"
// [!include ~/snippets/op-stack/l2.config.ts:setup]
```
:::

### Standalone Action

Call `Actions.l2.buildDepositTransaction` directly by passing the Client as the first argument.

:::code-group
```ts twoslash [example.ts]
import { Actions } from 'viem/op-stack'
import { Value } from 'viem/utils'
import { client } from './viem.config'

const deposit = await Actions.l2.buildDepositTransaction(client, { // [!code focus:4]
  mint: Value.fromEther('1'),
  to: '0x70997970c51812dc3a010c7d01b50e0d17dc79c8',
})
// @log: { account: undefined, request: { gas: 23660n, mint: 1000000000000000000n, to: '0x7099...' }, targetChain: { ... } }
```

```ts twoslash [viem.config.ts] filename="viem.config.ts"
// [!include ~/snippets/op-stack/l2.config.ts:setup]
```
:::

## Return Value

`Actions.l2.buildDepositTransaction.ReturnType`

The initiating Account, prepared deposit request, and target L2 Chain.

## Parameters

### account

* **Type:** `Account | Address`
* **Default:** `undefined`

The Account or address that initiates the deposit.

### chain

* **Type:** `Chain`
* **Default:** `client.chain`

The L2 Chain the deposit targets.

### data

* **Type:** `Hex`

The encoded contract call or deployment bytecode.

### gas

* **Type:** `bigint`

The gas limit for execution on L2. Viem estimates this value when omitted.

### isCreation

* **Type:** `boolean`
* **Default:** `false`

Whether the deposit deploys a contract. Contract creation requires `data` and cannot include `to`.

### mint

* **Type:** `bigint`

The value in wei minted on L2 and debited from the caller on L1.

### to

* **Type:** `Address`

The L2 transaction recipient.

### value

* **Type:** `bigint`

The value in wei sent with the transaction on L2.