# `isValidTransaction`

Checks if a Safe transaction can be executed successfully with no errors.

## Usage


<Tabs items={['example.ts', 'setup.ts']}>
  <Tabs.Tab>
    ```typescript
    import {
      MetaTransactionData,
      OperationType,
      TransactionOptions
    } from '@safe-global/types-kit'
    import { protocolKit } from './setup.ts'

    const transactions: MetaTransactionData[] = [{
      to: '0x...',
      value: '123',
      data: '0x',
      operation: OperationType.Call // Optional
    }]
    const safeTransaction = await protocolKit.createTransaction({
      transactions
    })

    const options: TransactionOptions = {
      from: '0x...', // Optional
      gasLimit: '123', // Optional
      gasPrice: '123', // Optional
      maxFeePerGas: '123', // Optional
      maxPriorityFeePerGas: '123', // Optional
      nonce: 123 // Optional
    }

    const isValidTx = await protocolKit.isValidTransaction(
      safeTransaction,
      options // Optional
    )
    ```
  </Tabs.Tab>
  <Tabs.Tab>
    ```typescript
    import Safe from '@safe-global/protocol-kit'

    export const protocolKit = Safe.init({
      provider,
      signer,
      safeAddress: '0x...'
    })
    ```
  </Tabs.Tab>
</Tabs>


## Parameters

### `safeTransaction`

- **Type**: [`SafeTransaction`](https://github.com/safe-global/safe-core-sdk/blob/main/packages/types-kit/src/types.ts#L54-L60)

The Safe transaction.

```typescript focus=2
const isValidTx = await protocolKit.isValidTransaction(
  safeTransaction
)
```

### `options.from` (Optional)

- **Type**: `string`

The address of the transaction sender.

```typescript focus=4
const isValidTx = await protocolKit.isValidTransaction(
  safeTransaction,
  options: {
    from: '0x...'
  }
)
```

### `options.gasLimit` (Optional)

- **Type**: `number | string | bigint`

The maximum amount of gas the transaction can use.

```typescript focus=4
const isValidTx = await protocolKit.isValidTransaction(
  safeTransaction,
  options: {
    gasLimit: '123'
  }
)
```

### `options.gasPrice` (Optional)

- **Type**: `number | string`

The price in wei that the sender is willing to pay for each unit of gas.

```typescript focus=4
const isValidTx = await protocolKit.isValidTransaction(
  safeTransaction,
  options: {
    gasPrice: '123'
  }
)
```

### `options.maxFeePerGas` (Optional)

- **Type**: `number | string`

The maximum fee per gas the sender is willing to pay.

```typescript focus=4
const isValidTx = await protocolKit.isValidTransaction(
  safeTransaction,
  options: {
    maxFeePerGas: '123'
  }
)
```

### `options.maxPriorityFeePerGas` (Optional)

- **Type**: `number | string`

The maximum priority fee per gas the sender is willing to pay.

```typescript focus=4
const isValidTx = await protocolKit.isValidTransaction(
  safeTransaction,
  options: {
    maxPriorityFeePerGas: '123'
  }
)
```

### `options.nonce` (Optional)

- **Type**: `number`

The nonce of the transaction.

```typescript focus=4
const isValidTx = await protocolKit.isValidTransaction(
  safeTransaction,
  options: {
    nonce: 123
  }
)
```

## Returns

`Promise<boolean>`

The boolean value that indicates if the transaction is valid.