The isWalletACoinbaseSmartWallet utility is designed to verify if a given sender address is a Smart Wallet proxy with the expected implementation before sponsoring a transaction.

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Usage

import { isWalletACoinbaseSmartWallet } from '@coinbase/onchainkit/wallet';
import { http } from 'viem';
import { baseSepolia } from 'viem/chains';
import type { UserOperation } from 'permissionless';
import { type PublicClient, createPublicClient } from 'viem';

export const publicClient = createPublicClient({
  chain: baseSepolia,
  transport: http(),
});

const userOperation = { sender: '0x123' } as UserOperation<'v0.6'>;

if (isWalletACoinbaseSmartWallet({ client: publicClient, userOp: userOperation })) {
console.log('The sender address is a valid smart wallet proxy.');
} else {
console.log('The sender address is not a valid smart wallet proxy.');
}

​
Returns

Promise<IsWalletACoinbaseSmartWalletResponse>

type IsWalletACoinbaseSmartWalletResponse =
  | { isCoinbaseSmartWallet: true }
  | { isCoinbaseSmartWallet: false; error: string; code: string };

​
Parameters

type IsWalletACoinbaseSmartWalletOptions = {
  client: PublicClient;
  userOp: RpcUserOperation<'0.6'>;
};

type PublicClient = {
  // Viem PublicClient type
  getBytecode: (args: { address: Address }) => Promise<Hex | undefined>;
  request: <T>(args: { method: string; params: any[] }) => Promise<T>;
  // ... other PublicClient properties
};

type RpcUserOperation<T> = {
  sender: Address;
  initCode?: Hex;
  // ... other UserOperation properties
};

type Address = `0x${string}`;
type Hex = `0x${string}`;