prepareUserOperation

This method prepares a User Operation for execution by filling in missing properties. It's useful when you want to construct a User Operation before sending it.

Usage

import { nexusClient } from "./nexusClient"
import { parseEther } from "viem"
 
// Prepare a user operation
const userOperation = await nexusClient.prepareUserOperation({
  calls: [{
    to: '0x70997970c51812dc3a010c7d01b50e0d17dc79c8',
    value: parseEther('1')
  }]
})

Parameters

• calls { data?: Hex, to: Address, value?: bigint }[]: Array of transactions to execute
• callGasLimit bigint (optional): Amount of gas to allocate for the main execution call
• maxFeePerGas bigint (optional): Maximum fee per gas for User Operation execution
• maxPriorityFeePerGas bigint (optional): Maximum priority fee per gas
• nonce bigint (optional): Nonce for the User Operation
• paymaster Address | true | PaymasterClient (optional): Paymaster configuration for gas sponsorship
• paymasterData Hex (optional): Call data to execute on the Paymaster contract
• signature Hex (optional): Signature for the User Operation
• verificationGasLimit bigint (optional): Gas to allocate for verification
• preVerificationGas bigint (optional): Extra gas to pay the Bundler

Returns

Returns a prepared UserOperation object that can be used with sendUserOperation.

Related Methods

• sendUserOperation
• debugUserOperation