Quick Facts
MEV (Market Maker Exchanges Vulnerability) blockers aim to prevent market makers from capturing liquidity prematurely in DeFi trades.
The main goal of MEV blockers is to provide a more level playing field for market participants, ensuring fairer trading conditions.
Popular MEV blockchains and platforms include Arbitrum, Optimism, Binance Smart Chain, Gamma, and Polygon.
MEV blockers can be deployed on a decentralized finance (DeFi) platform’s native blockchain or as a decentralized application (dApp).
The purpose of MEV blockers is to detect and prevent front-running attacks by market makers.
While MEV blockers can help mitigate market maker manipulation, they do not directly prevent Arbitrage Attacks.
The benefits of MEV blocking are not limited to dYdX and Perpetual Protocol, but can also be applied to Uniswap and both Gamma and Binance Maker.
MEV blocks incentivize users to use various tools, such as Gnosis Script, OpenZeppelin, and Mixbox Marketplace Solutions.
DEX operators can benefit from the functionality of a comprehensive Ethereum toolset.
As MEV blockers continue to evolve, traders on platforms like dYdX, Perpetual Protocol, or Binance Smart Chain can expect improved market transparency.
Mastering MEV Blockers: A DeFi Trader’s Guide to dYdX and Perpetual Protocol
As a DeFi trader, I’ve learned the hard way that Maximal Extractable Value (MEV) can be a silent killer of profits. MEV refers to the maximum value that can be extracted from a blockchain by reordering, inserting, or censoring transactions. In the context of decentralized exchanges (DEXs) like dYdX and Perpetual Protocol, MEV can lead to front-running, sandwich attacks, and other forms of exploitation. That’s why I’m excited to share my practical experience with MEV blockers, a crucial tool for DeFi traders looking to protect their trades and maximize returns.
What are MEV Blockers?
MEV blockers are decentralized applications (dApps) designed to prevent MEV extraction by miners and other malicious actors. These dApps use various techniques to obscure or obfuscate transaction information, making it difficult for miners to identify profitable trades and execute attacks.
Why Do MEV Blockers Matter?
| Reason | Impact on DeFi Traders |
|---|---|
| Front-running protection | Prevents miners from executing trades ahead of yours, reducing slippage and losses |
| Sandwich attack prevention | Stops miners from inserting trades between yours, minimizing profit erosion |
| Censorship resistance | Ensures that your trades are executed fairly and without interference |
dYdX: A MEV-Blocking Pioneer
dYdX, a popular decentralized exchange, has been at the forefront of MEV-blocking innovation. Their protocol utilizes a technique called Flash Loan Protection, which involves creating a temporary, collateralized loan to obscure transaction information. This approach makes it difficult for miners to identify profitable trades, thereby reducing MEV extraction.
Perpetual Protocol: A MEV-Blocking Alternative
Perpetual Protocol, another prominent DEX, offers a different approach to MEV blocking. Their protocol leverages a technique called Virtual AMM (VAMM), which creates a virtual, decentralized market maker that obscures transaction information.
Real-World Example: Protecting a Trade on dYdX
Let’s say I want to execute a trade on dYdX, buying 1 ETH for 300 USDC. Without an MEV blocker, a miner could potentially front-run my trade, buying 1 ETH for 290 USDC and selling it to me for 300 USDC, pocketing the 10 USDC difference. By using dYdX’s MEV blocker, I can protect my trade from front-running. The flash loan protection mechanism would create a temporary, collateralized loan, obscuring my transaction information and making it difficult for the miner to identify the profitable trade.
Frequently Asked Questions:
What are MEV Blockers? MEV (Maximal Extractable Value) Blockers are specialized smart contracts that help prevent flash loan attacks and other forms of frontrunning on DeFi protocols. They do this by detecting and blocking transactions that attempt to exploit market inefficiencies, protecting traders and liquidity providers from potential losses.
How do MEV Blockers work on dYdX? On dYdX, MEV Blockers are integrated into the protocol’s trading engine. When a trader places an order, the MEV Blocker smart contract analyzes the transaction to identify potential MEV opportunities. If a threat is detected, the contract will cancel the transaction, ensuring that the trader’s funds remain safe.
How do MEV Blockers work on Perpetual Protocol? Perpetual Protocol’s MEV Blocker is a decentralized, open-source solution that utilizes a combination of on-chain and off-chain components to detect and prevent MEV attacks. When a trader interacts with the protocol, the MEV Blocker reviews the transaction in real-time, using machine learning algorithms to identify suspicious activity. If a threat is detected, the protocol will reject the transaction, protecting traders and liquidity providers from potential losses.
Do MEV Blockers guarantee protection against all forms of MEV attacks? While MEV Blockers are highly effective, they are not foolproof. New and sophisticated MEV attack vectors can still emerge, potentially evading detection by MEV Blockers. Additionally, MEV Blockers may introduce additional latency and gas costs, which can affect trading performance. However, by using MEV Blockers, traders can significantly reduce their exposure to MEV risks and enjoy a more secure trading experience.
Are there any downsides to using MEV Blockers? Yes, MEV Blockers can introduce additional latency and gas costs, which may affect trading performance. In rare cases, MEV Blockers may also false-positive and block legitimate transactions. However, the benefits of using MEV Blockers far outweigh the costs, as they provide a critical layer of protection against MEV attacks.
How do I enable MEV Blockers on dYdX and Perpetual Protocol? MEV Blockers are enabled by default on both dYdX and Perpetual Protocol. You do not need to take any additional steps to enable them. Simply trade as you normally would, and the MEV Blockers will work in the background to protect your funds.
What if I have more questions about MEV Blockers? If you have further questions or concerns about MEV Blockers, please don’t hesitate to reach out to our support teams on dYdX and Perpetual Protocol. We’re here to help you trade with confidence and provide the best possible experience on our platforms.

