multicall3 example

multicall3.ts

import { client } from "@/components/client";
import {
	encode,
	getContract,
	prepareContractCall,
	sendAndConfirmTransaction,
} from "thirdweb";
import { avalancheFuji } from "thirdweb/chains";
import { aggregate3 } from "thirdweb/extensions/multicall3";
import { privateKeyToAccount } from "thirdweb/wallets";

export default async function handler() {
	const account = privateKeyToAccount({
		client,
		privateKey: process.env.THIRDWEB_ADMIN_PRIVATE_KEY as string,
	});
  const target = "0x...."; // the contract address you want to call
  const targetContract = getContract({
    address: target,
    chain: avalancheFuji,
    client,
  })
  const multicallContract = getContract({
		address: "0xcA11bde05977b3631167028862bE2a173976CA11", // replace with your own multicall3 contract address if need be
		chain: avalancheFuji,
		client,
	});
  const _cats = ["0xsomething", "0xsomething2"];
  const calls:{ target: string; callData: `0x${string}`, allowFailure: boolean }[] = [];
  _cats.forEach(async (_cat) => {
    const preparedTx = prepareContractCall({
			contract: targetContract,
			method: "function get(bytes32 _cat) view returns (uint256)",
			params: [_cat as `0x${string}`],
		});
    const callData = await encode(preparedTx);
    const allowFailure = false; // up to you
    calls.push({target, callData, allowFailure });
  });
  const transaction = aggregate3({
    contract: multicallContract,
    calls,
  });
  const receipt = await sendAndConfirmTransaction({transaction, account})
}