> ## Documentation Index
> Fetch the complete documentation index at: https://sequence-0fb8d9e6-api_docs.mintlify.site/llms.txt
> Use this file to discover all available pages before exploring further.

# useCheckWaasFeeOptions

> Hook for checking transaction fee options in Sequence

<Warning>
  This hook will be deprecated in v6, it can only be used with [Connect SDK v5.](/sdk/web/wallet-sdk/embedded/getting-started)
</Warning>

## Import

```tsx theme={null}
import { useCheckWaasFeeOptions } from '@0xsequence/connect'
```

## Usage

```tsx theme={null}
import { useCheckWaasFeeOptions } from '@0xsequence/connect'

function App() {
  const checkFeeOptions = useCheckWaasFeeOptions()
  
  const handleTransaction = async () => {
    // Example transaction
    const transaction = {
      to: '0x...',
      value: '1000000000000000000', // 1 ETH
      data: '0x...'
    }
    
    const { isSponsored, feeOptions, feeQuote } = await checkFeeOptions({
      transactions: [transaction],
      chainId: 1 // Ethereum Mainnet
    })
    
    if (isSponsored) {
      console.log('Transaction is sponsored!')
    } else if (feeOptions) {
      console.log('Available fee options:', feeOptions)
      console.log('Fee quote:', feeQuote)
      // Handle fee payment selection
    }
  }
  
  return (
    <div>
      <button onClick={handleTransaction}>
        Check Transaction Fees
      </button>
    </div>
  )
}
```

## Return Type

The hook returns a function with the following signature:

```tsx theme={null}
(params: {
  transactions: Transaction[]
  chainId: number
}) => Promise<{
  feeQuote: string | undefined
  feeOptions: FeeOption[] | undefined
  isSponsored: boolean
}>
```

### Parameters

#### transactions

`Transaction[]`

Array of transactions to check fee options for.

```tsx theme={null}
interface Transaction {
  to: string
  value?: string
  data?: string
  // ... other transaction properties
}
```

#### chainId

`number`

The ID of the blockchain network where the transaction will be executed.

### Return Object Properties

#### isSponsored

`boolean`

Indicates whether the transaction will be sponsored (true) or requires fee payment (false).

#### feeOptions

`FeeOption[] | undefined`

Available fee payment options if the transaction is not sponsored.

```tsx theme={null}
interface FeeOption {
  token: {
    symbol: string
    decimals: number
    address: string
  }
  // ... other fee option properties
}
```

#### feeQuote

`string | undefined`

The fee quote for the transaction if available.

## Notes

This hook is specifically designed for use with Sequence and provides functionality to:

* Check if a transaction will be sponsored
* Get available fee options for unsponsored transactions
* Retrieve fee quotes for transactions