Send Transactions

This guide explains how to quote and send EVM transactions through ERC-4337 UserOperations.

Send a Transaction

Use sendTransaction(tx) with a single transaction object or an array of transaction objects.

Send a transaction

const result = await account.sendTransaction({
  to: '0x742C4265F5Ba4F8E0842e2b9EfE66302F7a13B6F',
  value: 1000000000000000n,
  data: '0x'
})

console.log('UserOperation hash:', result.hash)
console.log('Fee:', result.fee)

The returned hash is a UserOperation hash. Use getUserOperationReceipt(hash) or getTransactionReceipt(hash) to check inclusion.

Send a Batch

Send a batch

const result = await account.sendTransaction([
  {
    to: '0x1111111111111111111111111111111111111111',
    value: 0n,
    data: '0x'
  },
  {
    to: '0x2222222222222222222222222222222222222222',
    value: 0n,
    data: '0x'
  }
])

Quote Before Sending

Use quoteSendTransaction(tx) to estimate the fee without submitting the UserOperation.

Quote then send

const tx = {
  to: '0x742C4265F5Ba4F8E0842e2b9EfE66302F7a13B6F',
  value: 0n,
  data: '0x'
}

const quote = await account.quoteSendTransaction(tx)
console.log('Estimated fee:', quote.fee)

const result = await account.sendTransaction(tx)
console.log('UserOperation hash:', result.hash)

For paymaster-token mode, the fee is returned in the paymaster token's base units. For sponsorship mode, the quote returns fee: 0n.

Owned accounts cache a recently quoted transaction for up to 2 minutes. If sendTransaction() receives the same transaction during that window, the account can reuse the built UserOperation. If the account must include a fresh EIP-7702 authorization, it rebuilds the UserOperation before sending.

Override Fee Mode for One Send

Per-call fee config

const result = await account.sendTransaction({
  to: '0x742C4265F5Ba4F8E0842e2b9EfE66302F7a13B6F',
  value: 0n,
  data: '0x'
}, {
  isSponsored: true,
  sponsorshipPolicyId: 'sp_special_case'
})

Read Receipts

Read receipts

const userOpReceipt = await account.getUserOperationReceipt(result.hash)
const txReceipt = await account.getTransactionReceipt(result.hash)

getTransactionReceipt() returns null until the bundler receipt includes an EVM transaction hash.