AMM (Automated Market Maker)

What Is an Automated Market Maker?

An Automated Market Maker (AMM) is a DeFi system that lets you trade cryptocurrencies without needing a traditional exchange or order book. Instead of matching buyers with sellers, AMMs use liquidity pools, which are basically pools of tokens from different investors, and mathematical formulas to automatically set prices and execute trades instantly.

How It Works

AMMs work differently than traditional exchanges.

• Instead of placing an order and waiting for someone to match it, you trade directly against a pool of tokens.

• Users called liquidity providers (or LPs)  deposit token pairs (like ETH/USDC) into these pools and earn fees from trades.

• The AMM uses algorithms to adjust prices based on the ratio of tokens in the pool, when you buy one token, its price goes up; when you sell, the price goes down.

While this sounds convenient, AMMs expose users to several risks. Slippage means you might get a different price than expected, especially on large trades. Impermanent loss can reduce liquidity providers’ earnings.

Most concerning are MEV attacks, where bots front-run your transactions to profit at your expense. Attackers also exploit AMMs through liquidity pool drains, oracle manipulation, and flash loan attacks, particularly on newer platforms with shallow liquidity.

Why AMMs Are Important

AMMs power most DeFi trading today, from Uniswap on Ethereum to Raydium on Solana. This makes them an attractive attack vector for bad actors.

In  2024, multiple AMM-based pools on smaller blockchains were completely drained after attackers manipulated prices and oracle feeds. This shows that not AMMs are created equal. Its security depends heavily on design, audit quality, and liquidity depth.

How to Protect Yourself

• Before trading on any AMM, check the pool’s liquidity depth and audit history

• Set appropriate slippage tolerance in your Web3 wallet to avoid surprise price changes

• Stick to established platforms with proven track records

• Understanding how AMMs work isn’t just educational, it’s essential to protecting your funds in DeFi

• Use Web3 security tools like Kerberus and Pocket Universe to get real-time protection and warnings when interacting with Web3 platforms

• Check our Learn academy for top crypto safety information