​
Import

import { useCheckWaasFeeOptions } from '@0xsequence/connect'

​
Usage

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:

(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.

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.

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 WaaS (Wallet as a Service) and provides functionality to:

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

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