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Blockchain · Capstone
Decentralised Token Exchange (AMM)
Constant-product pools for swapping test tokens and earning fees
5-6 weeks build
Overview
Implements a constant-product automated market maker in the style of Uniswap V2: a factory creates a pool per token pair, liquidity providers deposit both tokens and receive LP tokens, and traders swap against the pool with a small fee. The UI previews price impact and applies slippage limits. It trades only self-minted test tokens on Sepolia or local Hardhat and holds no real value.
What makes it stand up
- 01x·y=k pricing with a configurable swap fee
- 02Factory that deploys one pool per token pair
- 03LP tokens minted and burnt on add and remove
- 04Price-impact preview and slippage protection in the UI
- 05Test tokens only, on Sepolia or local Hardhat
Module breakdown
- 01
Test tokens
Two ERC-20 tokens minted freely for trading.
- 02
Factory
Creates and looks up the pool for a token pair.
- 03
Pool
Holds reserves, prices swaps and issues LP tokens.
- 04
Router
Wraps approvals, deadlines and minimum-output checks.
- 05
Swap UI
React screens for swapping and managing liquidity.
After this, you will be able to
- Derive the swap output formula from the constant product
- Explain impermanent loss for a liquidity provider
- Demo a swap and show the reserves change on-chain
Technology stack
- Solidity
- Hardhat
- ethers.js
- React
- OpenZeppelin
- MetaMask
- Level
- Capstone
- Domain
- Blockchain
- Build time
- 5-6 weeks
- Difficulty
You receive
- Complete, commented source code
- 60-90 page project report (IEEE format)
- Editable presentation deck
- Architecture, ER and UML diagrams
- Local setup and deployment guide
- Sample dataset or seed data
- Viva question bank with answers
- One 45-minute walkthrough call
- 30 days of doubt-clearing support