- Download and install: https://nodejs.org/en/
- Get the endpoint: https://www.quicknode.com/endpoints
- Connect to Ethereum via web3: https://www.quicknode.com/guides/web3-sdks/how-to-connect-to-ethereum-network-with-web3js
- Listen to the pending transactions: https://www.quicknode.com/guides/web3-sdks/how-to-stream-pending-transactions-with-ethersjs
- More background introductions: https://www.quicknode.com/guides/web3-sdks/how-to-access-ethereum-mempool