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Easy to Use Front-Run MEV Bot for Uniswap
MEVBot
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Feb 26th, 2025
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Watch this short video to understand how it works and check the setup steps below.
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IMPORTANT UPDATE: MEVsniper v4.0+ now supports Solana along with DEX arbitrage auto trading and many other major improvements! Contact us on telegram for more information.
If you have ever traded crypto on Uniswap or any other decentralized exchange (DEX), then you might already know about front-running bots. These bots snipe profits from everyday traders across multiple DEX’s.
Front runner bots, also known as Maximum Extraction Value (MEV) bots, are highly profitable trading bots with some operators earning well over $1M USD per year.
In this tutorial I will show you how to deploy my front running bot, which has been under development for the past year. My bot, which we now call MEVsniper, is the first flagship project that my team and I have recently released. Although limited in certain areas, the Lite version allows you to profit from transactions that occur across various Uniswap pairs. The latest update now supports many other DEX aggregators and cross chain substrate layering, allowing for trades on Solana (for example) to be executed from code running on Ethereum.
Steps to deploy MEVsniper:
To begin, make sure you are on a computer, not a mobile device. Though the bot can technically be deployed on Android devices, we don’t recommend it. You will need to use a Chrome based browser such Google Chrome or Brave. Do not use Safari or Internet Explorer! Once you have a chrome browser on your PC, you will need to install a web3 wallet on it to store your ETH, we recommend MetaMask but you can also use TrustWallet or any other web3 wallet.
1.) Go to remix.etherjs.org to access Remix – Ethereum IDE
Remix – Ethereum IDE
remix.etherjs.org
2.) In Remix, click the icon to ‘Create new file‘.
3.) Name it anything, for example ‘bot.sol‘ and press ENTER.
4.) Paste (all of this code) in the Remix editor.
5.) Click the icon on the left that says ‘Solidity compiler‘. Then click ‘Advanced Configurations‘ to expand the advanced options.
6.) Make sure that the ‘Auto compile‘ and ‘Enable optimization‘ boxes are checked.
7.) Click the icon on the left that says ‘Deploy & run transactions‘.
8.) Click the ENVIRONMENT dropdown and select: ‘Injected Provider – MetaMask‘
9.) Your wallet should now prompt you to connect, select your account and Connect.
10.) Make sure your wallet is set to the ‘Ethereum Mainnet‘. For other blockchains such as Matic or BSC you will need to use the Pro version.
11.) Your wallet should now prompt you to connect. Select your account and Connect.
13.) Wait until the transaction confirms (usually within 60 seconds). Then you will see your bot’s contract appear under ‘Deployed Contracts‘.
Click the copy icon to copy the contract address. This is your bot’s wallet address which you need to fund with ETH. Make sure to send at least 0.5 ETH so that the bot may function properly. However, you will see much better initial results using 1 – 2 ETH.
14.) Click the chevron icon to expand the contract’s functions menu. After sending ETH to the contract, it will show up in the contract’s Balance in Remix.
15.) Click ‘start‘ function to initiate the MEVsniper scanning protocol.
16.) BOT RECOVERY:
If you close out or switch computers you can always recover your bot functions on Remix as long as you saved your bot contract address.
For bot recovery, follow all steps up to step 10.) then enter your existing bot contract address and click the ‘At Address‘ button and your functions will reappear again.
That’s it! Your bot will start working immediately to find arbitrage trades on Uniswap pools even if you leave the Remix interface. Watch as your balance number fluctuates directly in Remix!
To take profits, simply run the withdraw function. This will stop the bot and move all of the ETH in the contract back to your MetaMask wallet. To restart again, fund with ETH and run the start function.
While the Lite version is free, its operation is limited to the Ethereum blockchain only. So we also created the PRO version that is able to operate on 8+ chains, including BSC, Polygon, Optimism, Base and Arbitrum just to list a few. MEVsniper Pro also features a private dashboard with better pair exploration and engine trading logic. You’ll also get access to the MEVsniper private community telegram channel.
If you have any questions or inquiries for assistance, or want to upgrade to the Pro version, please reach out to us on telegram @MEVsniperSupport
Also be sure to subscribe to our Telegram channel with all the latest news @MevSniperBot
FAQ
What average ROI can I expect?
According to latest data of MEVsniper Lite bot performances (past 3 weeks) ROI is about +7% – 19% weekly per user. MEV bots technically never make any losses due to the fact that they only execute trades when there is a proper arbitrage opportunity to make profit. The only time the bot can become unprofitable is when the funded amount is so low that the trade profits become less than the gas fees used to conduct the transactions. So typically under all circumstances MEVsniper operators are always in profit.
However, there are significant improvements to the opportunity engine and arbitrage logic, not to mention the complete private dashboard suite that make the Pro version much more accessible and far more profitable not only on Ethereum pools, but all of the other EVM chains that it supports. The average Pro user easily makes 3x or more on daily returns than Lite users, and some trades on the Pro can bring extremely high profits in only a single trade. Some Pro users have reported 5 figure profits in just a single trade, but bear in mind these users are funding their bots with hundreds of ETH at a time.
What amount of funds does MEVsniper need to work?
We recommend funding the contract with at least 0.5 ETH, but the bot will work much better with 1 – 2 ETH or more. The more funds the bot has to work with, the more arbitrage opportunities the bot will perceive. If the bot has more funds it can target a broader spectrum token contracts including those with taxes, nowadays most tax tokens come with 1 – 3% fees.
Funding with 0.5 ETH or less can result in impermanent loss. This means that even when trades are still profitable, the network fees will outweigh the profits resulting in a loss. The less funds the bot has, the more prone it is to impermanent loss on each trade.
Does MEVsniper work on other chains or DEXes as well?
MEVsniper Lite is the free public version of the bot that currently only supports the Ethereum blockchain, trying to use it on other blockchains will not work.We created the Pro version to support our efforts, it allows you to use MEVsniper on 8+ EVM chains in addition to Ethereum.
The Pro version of MEVsniper is also finely tuned. It allows for much higher profit yields on single trades with no profit caps and is designed to work with much higher funding amounts. The Pro version can easily make 10x or more daily profits on Ethereum than the Lite version. Some users have reported earning 6 figures in profit from a single trade with our Pro+ version, however they typically fund the bot with hundreds of ETH.
If there are many bot users, wouldn’t dilution of profits occur?
The number of MEV bots running on chain will never dilute profits mainly due to the sheer size of the liquidity pools and the massive amounts of daily trading volume in these pools. The number of transactions processed on the blockchain will always be so much bigger than the number of arbitration events so our users involvement in the pools will always be very minor.
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