Bulk update token metadata

update-metadata.ts

import {
	createThirdwebClient,
	type Address,
	getContract,
	prepareContractCall,
	sendAndConfirmTransaction,
} from "thirdweb";
import { privateKeyToAccount } from "thirdweb/wallets";
import { upload } from "thirdweb/storage";
import { sepolia } from "thirdweb/chains";

const client = createThirdwebClient({
	secretKey: YOUR_SECRET_KEY, // get it from https://thirdweb.com/dashboard/settings/api-keys
});

// This should be the admin account on your contract
const eoa = privateKeyToAccount({
	privateKey: process.env.PRIVATE_KEY as Address,
	client,
});

// Update this to return the desired metadata based on the token ID
const generateMetadata = (i: number) => ({
	name: `Token ${i}`,
	description: `Description for token ${i}`,
	image: `https://images.unsplash.com/photo-1711994872181-1e112e5e18e0?q=80`,
});

// Update this to however many token IDs you have
const files = [...Array(10).keys()].map(
	(i) => new File([JSON.stringify(generateMetadata(i))], `${i}`)
);
const uris = await upload({
	client,
	files,
});

const contract = getContract({
	client,
	address: "0x123",
	chain: sepolia,
});

await Promise.all(
	uris.map(async (uri, tokenId) => {
		const tx = prepareContractCall({
			contract,
			method: "function setTokenURI(uint256 tokenId, string memory uri)",
			params: [BigInt(tokenId), uri],
		});

		try {
			await sendAndConfirmTransaction({
				transaction: tx,
				account: eoa,
			});
		} catch (error) {
			console.error(error);
		}
	})
);

console.log("Done");