Sending Transactions

Once a web application is connected to StarKey via the Aptos Wallet Adapter, it can prompt the user to sign and submit transactions on their behalf.

Sign and submit

signAndSubmitTransaction signs the transaction and submits it to the network in one call:

import { InputTransactionData, useWallet } from '@aptos-labs/wallet-adapter-react'
 
const { signAndSubmitTransaction } = useWallet()
 
const transaction: InputTransactionData = {
  data: {
    function: '0x1::aptos_account::transfer',
    typeArguments: [],
    functionArguments: [toAddress, amount],
  },
}
 
const pendingTransaction = await signAndSubmitTransaction(transaction)
console.log('txHash ::', pendingTransaction.hash)

Sign only

For advanced flows, such as multi-signature transactions, use signTransaction to sign without submitting — you decide when and how to submit it:

const { signTransaction } = useWallet()
 
const signedTransaction = await signTransaction(transaction)
// submit signedTransaction later as needed

Notes

• InputTransactionData takes the Move entry-function path, its type arguments, and its function arguments — the adapter handles BCS serialization for you, no manual AptosClient construction needed.
• Both methods can reject if the user declines the confirmation prompt — wrap calls in try/catch. See Error Codes.

Related pages

• Get started with Aptos
• Establish a Connection
• Signing Messages
• Error Codes