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Zealynx AcademyZealynx Academy
Fundamental
engineering

Building Uniswap V2

Build the actual Uniswap V2 protocol from scratch. Every line of code. Modernized to Solidity 0.8.x. When you finish, you have a complete, deployable fork you understand because you wrote it.

What you are building

You will write the actual Uniswap V2 code: UniswapV2ERC20, UniswapV2Pair, UniswapV2Factory, UniswapV2Library, and UniswapV2Router02. Five contracts, modernized to Solidity 0.8.x. The architecture, math, and invariants are identical to the production protocol that handles billions in daily volume.

License: GPL-3.0Source: Uniswap/v2-coreSolidity: ^0.8.20
16 sections
Lynx340 Lynx
~240 min
Start Module

Part 1: Core Protocol

9 sections
1
Introduction to Uniswap V2
Lynx5
2
The LP Token (UniswapV2ERC20)
Lynx15
3
Pair: State and Initialization
Lynx15
4
Pair: Reserve Updates and TWAP Oracle
Lynx15
5
Pair: Adding Liquidity (mint)
Lynx15
6
Pair: Removing Liquidity (burn)
Lynx15
7
Pair: The Swap
Lynx15
8
The Factory (UniswapV2Factory)
Lynx15
9
Core Protocol Complete
Lynx50

Part 2: Periphery

7 sections
10
Why the Router Exists
Lynx5
11
Library: Helpers and Math
Lynx15
12
Router: Adding Liquidity
Lynx15
13
Router: Removing Liquidity
Lynx15
14
Router: Swapping
Lynx15
15
Router: Fee-on-Transfer Support
Lynx15
16
Complete Protocol
Lynx100