# `estimateSafeTransaction`

Estimates the safeTxGas for a given Safe multi-signature transaction.

## Usage


<Tabs items={['example.ts', 'setup.ts']}>
  <Tabs.Tab>
    ```typescript
    import { SafeMultisigTransactionEstimate } from '@safe-global/api-kit'
    import { apiKit } from './setup.ts'

    const safeAddress = '0x...'
    
    const safeTransaction: SafeMultisigTransactionEstimate = {
      to: '0x...',
      value: '0',
      data: '0x',
      operation: 0 // Optional
    }

    const estimateTx = await apiKit.estimateSafeTransaction(
      safeAddress,
      safeTransaction
    )
    ```
  </Tabs.Tab>
  <Tabs.Tab>
    ```typescript
    import SafeApiKit from '@safe-global/api-kit'

    // How to get an Api key => http://docs.safe.global/core-api/how-to-use-api-keys
    export const apiKit = new SafeApiKit({
      chainId: 1n, // Mainnet
      apiKey: 'YOUR_API_KEY'
    })
    ```
  </Tabs.Tab>
</Tabs>


## Returns

`Promise<SafeMultisigTransactionEstimateResponse>`

The safeTxGas for the given Safe transaction.

## Parameters

### `safeAddress`

- **Type:** `string`

The Safe address.

```typescript focus=2
const estimateTx = await apiKit.estimateSafeTransaction(
  '0x...',
  {
    to: '0x...',
    value: '0',
    data: '0x'
  }
)
```

### `safeTransaction.to`

- **Type:** `string`

The transaction recipient of the Safe transaction to estimate.

```typescript focus=4
const estimateTx = await apiKit.estimateSafeTransaction(
  '0x...',
  {
    to: '0x...',
    value: '0',
    data: '0x'
  }
)
```

### `safeTransaction.value`

- **Type:** `string`

The value of the Safe transaction to estimate.

```typescript focus=5
const estimateTx = await apiKit.estimateSafeTransaction(
  '0x...',
  {
    to: '0x...',
    value: '0',
    data: '0x'
  }
)
```

### `safeTransaction.data`

- **Type:** `string`

The data of the Safe transaction to estimate.

```typescript focus=6
const estimateTx = await apiKit.estimateSafeTransaction(
  '0x...',
  {
    to: '0x...',
    value: '0',
    data: '0x'
  }
)
```

### `safeTransaction.operation` (Optional)

- **Type:** `OperationType`

The operation of the Safe transaction to estimate.

```typescript focus=7
const estimateTx = await apiKit.estimateSafeTransaction(
  '0x...',
  {
    to: '0x...',
    value: '0',
    data: '0x',
    operation: 0
  }
)
```