What is v2-core?

This repository contains the core smart contracts behind Uniswap V2, one of the most widely used decentralized trading protocols in crypto. In plain terms, it provides the foundational rules that allow people to swap one cryptocurrency for another directly, without needing a traditional middleman like a bank or centralized exchange to hold their funds. At a high level, the code defines how automated "liquidity pools" work. Instead of matching buyers with sellers through an order book, users deposit pairs of tokens into a shared pool. When someone wants to trade, the contract automatically calculates the exchange rate based on the ratio of tokens currently sitting in the pool. This creates a market that runs entirely on predetermined math, executing trades instantly as long as there is enough liquidity available. The README points readers to Uniswap's official documentation for a deeper dive into exactly how these mechanisms function. Developers building decentralized applications would use these contracts as a foundation. For example, if a founder wanted to launch a new token and give their community a way to trade it immediately, they could create a pool using these contracts. A product manager exploring DeFi might study this code to understand how decentralized exchanges handle pricing and slippage. Security researchers and auditors also closely examine these contracts because they govern significant amounts of money. The README is intentionally sparse, mostly pointing to external documentation and offering basic setup commands for developers who want to compile or test the code locally. Notably, this repository represents just the "core" infrastructure. It contains the essential building blocks, but a full trading interface and additional safety features were developed separately. This architectural choice keeps the critical financial logic isolated, making the system easier to secure and audit independently of whatever user interface sits on top.