How Concentrated Liquidity in Uniswap V3 Works This article explains how Uniswap V3 implements concentrated liquidity. We assume the reader already understands Uniswap V2. To understand concentrated...

Fixed Point Arithmetic in Solidity (Using Solady, Solmate, and ABDK as Examples) A fixed-point number is an integer that stores only the numerator of a fraction — while the denominator is implied....

noDelegateCall Explained The modifier prevents delegatecall from being sent to a contract. We will first show the mechanism for how to accomplish this then later discuss the motivation for why one...

Uniswap V2: Calculating the Settlement Price of an AMM Swap This article explains how to determine the price settlement of a trading pair in an Automated Market Maker (AMM). It answers the question...

Uniswap V2 Architecture: An Introduction to Automated Market Makers Uniswap is a DeFi app that enables traders to swap one token for another in a trustless manner. It was one of the early automated...

Uniswap v2 router code walkthrough The Router contracts provide a user-facing smart contract for safely minting and burning LP tokens (adding and removing liquidity) safely swapping pair tokens They...

Breaking Down the Uniswap V2 Swap Function Uniswap V2’s swap function is cleverly designed, but many devs find its logic counterintuitive the first time they encounter it. This article explains how...

Checklist for Technical Writing !An image of a completed checklist and the text "" Fluff Are fluff transitions removed? (”It is important to note, ”Why did they do this?”, “Here’s how we can solve...

Uniswap V2 Mint and Burn Functions Explained The lifecycle of Uniswap V2 is someone mints LP tokens (supplies liquidity, i.e. tokens to the pool) for the first time, then a second depositor mints...

How the TWAP Oracle in Uniswap v2 Works What exactly is “price” in Uniswap? Suppose we have 1 Ether and 2,000 USDC in a pool. This implies that the price of Ether is 2,000 USDC. Specifically, the...

Checklist for building a Uniswap V2 clone It’s very educational to rebuild Uniswap v2 from scratch using modern Solidity (or Huff if you really want to do it in hard mode). Here are some pointers and...

How Uniswap V2 computes the mintFee Uniswap V2 was designed to collect 1/6th of the swap fees to the protocol. Since a swap fee is 0.3%, 1/6th of that is 0.05%, so 0.05% of every trade would go to...