Balloon Dex

Just a basic DEX and a custom Balloon ERC20 token, nothing special.

Balloon Dex

Created At

ETHOnline 2025

Project Description

A basic decentralized exchange for swapping ETH and a custom ERC20 token (Balloons). Uses an automated market maker model with constant product pricing (x*y=k) and charges 0.3% on swaps. Supports liquidity provision where users deposit both assets proportionally and withdraw their share later. Built with Solidity/Foundry contracts and a Next.js frontend. Tests verify the core swap and liquidity functions work. The price curve means larger trades get worse rates due to slippage—standard for this type of AMM but worth noting for actual use.

How it's Made

Using scaffold-eth, a powerful developer toolkit that gives you: a full Ethereum dev environment with local blockchain, a frontend connected to your contracts and built-in Debug tools, Faucets, wallet connection, and powerful hooks and components. Nothing notable, just practicing.

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