PoC for NFT instant sell on Opensea

sell-opensea.js

// if type module -> cannot use reqiure, need import
// In package.json: "type": "module",
import { OpenSeaSDK, Network } from "opensea-js";
import HDWalletProvider from "@truffle/hdwallet-provider";
import { config } from 'dotenv';
config();

const WALLET_PRIVATE_KEY = process.env.WALLET_PRIVATE_KEY
const OPENSEA_API_KEY = process.env.OPENSEA_API_KEY
const RPC_URL = process.env.RPC_URL
const provider = new HDWalletProvider(
  WALLET_PRIVATE_KEY, RPC_URL
);

const openseaSDK = new OpenSeaSDK(provider, {
  networkName: Network.Main,
  apiKey: OPENSEA_API_KEY,
});


const assetContractAddress = "0x3A112D86899578E63b373B6D09322E18Aed924Cb"
const tokenIds = "3786"
const accountAddress = "0xe3abCD85AA20279297ae52552758D6C4878c5d0C"

// Approve to Seaport: 0x1E0049783F008A0085193E00003D00cd54003c71

async function sellOrder(assetContractAddress, tokenIds, accountAddress) {
  const order = await openseaSDK.api.getOrder({
    side: "bid",
    protocol: "seaport",
    assetContractAddress: assetContractAddress,
    tokenIds: tokenIds,
  });
  console.log(order)
  console.log("start selling")
  const res = await openseaSDK.fulfillOrder({ order, accountAddress });
  console.log(res)
  console.log("selling succeeded")
}

sellOrder(assetContractAddress, tokenIds, accountAddress)