Transactions

Transaction methods

WaaP supports signing and executing transactions as per Sui Wallet Standard for sui:signTransaction and sui:signAndExecuteTransaction.

• sui:signTransaction - Prompt the user to sign a transaction and return the serialized transaction and signature back to the app. This method does not submit the transaction for execution.

• sui:signAndExecuteTransaction - Prompt the user to sign a transaction, then submit it for execution to the blockchain.

Sign and Execute Transaction (standard)

import { getWallets } from '@mysten/wallet-standard'
import { Transaction } from '@mysten/sui/transactions'

const wallets = getWallets().get()
const wallet = wallets.find(w => w.name === 'WaaP')

if (!wallet) return

const tx = new Transaction()
const [coin] = tx.splitCoins(tx.gas, [1000])
tx.transferObjects([coin], '0xRecipient...')

// The wallet expects serialized bytes
const bytes = await tx.build({ client: suiClient })

const result = await wallet.features['sui:signAndExecuteTransaction'].signAndExecuteTransaction({
  transaction: bytes,
  account: wallet.accounts[0],
  chain: 'sui:testnet', 
})

console.log('Digest:', result.digest)

Sign and Execute Transaction (with @mysten/dapp-kit)

@mysten/dapp-kit provides convenient hooks for signing transactions.

import { useSignAndExecuteTransaction } from '@mysten/dapp-kit'
import { Transaction } from '@mysten/sui/transactions'

export function ExecuteTransaction() {
  const { mutate: signAndExecuteTransaction } = useSignAndExecuteTransaction()

  const sendSui = () => {
    const tx = new Transaction()
    
    // Create a coin split
    const [coin] = tx.splitCoins(tx.gas, [1000])
    
    // Transfer the split coin to a recipient
    tx.transferObjects([coin], '0xRecipientAddress...')

    signAndExecuteTransaction(
      {
        transaction: tx,
      },
      {
        onSuccess: (result) => {
          console.log('Transaction executed:', result.digest)
        },
        onError: (error) => {
          console.error('Transaction failed:', error)
        }
      },
    )
  }

  return (
    <button onClick={sendSui}>
      Send 1000 MIST
    </button>
  )
}

Legacy Transaction Methods

WaaP maintains backward compatibility with older Sui SDK standards by supporting legacy methods. These methods map internally to the modern signTransaction and signAndExecuteTransaction implementations.

• sui:signTransactionBlock - Legacy version of sui:signTransaction.
• sui:signAndExecuteTransactionBlock - Legacy version of sui:signAndExecuteTransaction.

Sign and Execute Transaction Block (standard)

import { getWallets } from '@mysten/wallet-standard'
import { Transaction } from '@mysten/sui/transactions'

const wallets = getWallets().get()
const wallet = wallets.find(w => w.name === 'WaaP')

if (!wallet) return

const tx = new Transaction()
const [coin] = tx.splitCoins(tx.gas, [1000])
tx.transferObjects([coin], '0xRecipient...')

// The wallet expects serialized bytes
const bytes = await tx.build({ client: suiClient })

const result = await wallet.features['sui:signAndExecuteTransactionBlock'].signAndExecuteTransactionBlock({
  transactionBlock: bytes,
  account: wallet.accounts[0],
  chain: 'sui:testnet', 
})

console.log('Digest:', result.digest)

Sign and Execute Transaction Block (with @mysten/dapp-kit)

import { useSignAndExecuteTransactionBlock } from '@mysten/dapp-kit'
import { Transaction } from '@mysten/sui/transactions'

export function ExecuteTransactionBlock() {
  const { mutate: signAndExecuteTransactionBlock } = useSignAndExecuteTransactionBlock()

  const sendSui = () => {
    const tx = new Transaction()
    
    // Create a coin split
    const [coin] = tx.splitCoins(tx.gas, [1000])
    
    // Transfer the split coin to a recipient
    tx.transferObjects([coin], '0xRecipientAddress...')

    signAndExecuteTransactionBlock(
      {
        transactionBlock: tx,
      },
      {
        onSuccess: (result) => {
          console.log('Transaction executed:', result.digest)
        },
        onError: (error) => {
          console.error('Transaction failed:', error)
        }
      },
    )
  }

  return (
    <button onClick={sendSui}>
      Send 1000 MIST
    </button>
  )
}

---

Security and User Experience

• User Consent: All signing and transaction actions require explicit user approval via the WaaP modal.
• No Private Key Exposure: The private key is never reconstructed anywhere but done via 2PC (Two-party computation) and 2PC-MPC (Two-party computation - Multi-party computation).