Mempool Node WebSocket For Binance Smart Chain & Ethereum

A NodeJS package to help you monitor prechain mempool data for DEXs, DAPPs, & NFTs on popular blockchains such as Binance Smart Chain(BSC) and Ethereum(ETH) via Mempool Node's WebSocket endpoint. Receive detailed decoded data.

You can either use the bundled compiled .js, or build the Typescript yourself using your own tsconfigs.

Find detailed documentation via our Developer Docs.

Quick Start

Follow these steps to connect to the Mempool WebSocket:

Step 1

Install the package npm i @mempoolnode/ws

Step 2a

Get your API Key from the Mempool Node Dashboard, if you don't have an account you can create one for free, and filter the contract address you wish to monitor it's mempool data on, available for both ETH & BSC.

Step 2b

Create an instance of the connection manager

import { connectionManager } from  "@mempoolnode/ws";

//Pass in the API Key, obtained from the Mempool Node Dashboard.
let  connection = connectionManager('{YOUR-API-KEY}');

Step 3

Start your connection, passing in a callback handler for the transaction, and an optional error message handler.

//To begin receiving decoded mempool data, start the connection
connection.start((transaction) => console.log(transaction))

Step 4

To prevent consuming your API Limits in the background, don't forget to stop your connection when finished

//Stop the connection to the Mempool WebSocket
connection.stop()