The best MEV protection under the sun
MEV Blocker is your personal protection from frontrunning and sandwich attacks for a broad spectrum of Ethereum transactions
- Add the RPC endpoint directly to your wallet
- Enjoy full, automatic protection from all types of MEV
- Get paid by searchers for your transactions
MEV bots have extracted more than $1.38 billion from well-meaning Ethereum users across a variety of use cases (trading, providing liquidity, minting NFTs, etc). MEV Blocker is an RPC endpoint that supports these users by offering:
Full protection from frontrunning and sandwich attacks on all types of transactions
Profit from any backrunning opportunities your transactions create
A fast, free, censorship-resistant solution open to all searchers and builders
Add this RPC endpoint to your wallet to enjoy the full benefits of MEV Blocker
Click to add to your client
MEV Blocker (Ethereum Mainnet)Add to Wallet
Or manually add:
|MEV Blocker (Ethereum Mainnet)
|New RPC URL
|Block Explorer URL
Having trouble? Check your wallet's documentation
for instructions on how to update your RPC endpoint
What is MEV?
Any time you make a transaction that carries value, searchers can “frontrun” it by submitting the exact same transaction before you and keeping the profits for themselves. After getting frontrun, you can also get “backrun”, which is where the searcher cleans up any price slippage your trade caused, again keeping the profits for themselves. Both a frontrun and a backrun together are known as a “sandwich attack” — the worst type of MEV.
MEV gives you a worse price for your transactions and can cause you to lose out on hundreds or even thousands of dollars. MEV Blocker is an easy solution - an RPC endpoint that protects all types of transactions from MEV.
What is an RPC endpoint?
MEV Blocker is a special RPC endpoint that ensures your trades are protected from MEV. It does this by sending your transaction to a network of searchers that scan for backrunning opportunities, but cannot frontrun or sandwich your trades.
You can add RPC endpoints like MEV Blocker by changing the selected network in your crypto wallet. Some DeFi trading apps will also be able to integrate the MEV Blocker RPC endpoint directly — making it a default for all users. Get in touch if you're interested in doing this!
What kinds of MEV does MEV Blocker protect from?
How does MEV Blocker RPC give you a rebate and when?
In return for benefitting from backrunning your trade, these searchers are not allowed to frontrun or sandwich you — thus protecting you from the worst types of MEV.
When and where should I use MEV Blocker?
While some DEXs like CoW Swap offer MEV protection for your DeFi trades, most DeFi venues and NFT marketplaces do not provide any type of MEV protection.
This is where MEV Blocker comes in: any user or dApp can implement it and it protects all types of transactions from MEV.
See a chance to mint the next Cryptopunks but don't want anyone to snatch the opportunity from you? Use MEV Blocker.
Want to trade directly on an AMM that doesn't protect you from MEV? Use MEV Blocker.
How do I install MEV Blocker?
If your wallet does not support adding custom RPC endpoints, you may have to contact your wallet developer to get MEV Blocker included as a supported RPC.
How does MEV Blocker work?
When searchers submit winning bids through the orderflow auction, MEV Blocker sends the full amount of the bid to users and validators at a 90/10 split. Validators keep the 10% as a reward, and users pocket the other 90% as profit they'd miss out on if they weren't using MEV Blocker.
As long as you have MEV Blocker set as the RPC in your wallet (as if it were another network), you are protected from frontrunning and sandwiching when using any Ethereum dApp. And the profit share from backrunning is deposited automatically into your wallet.
Which block builders does MEV Blocker submit to?
Does this RPC offer revert protection?
This separate endpoint focuses on providing revert protection first, at the expense of possibly slower inclusion time. You can use this second endpoint by using https://rpc.mevblocker.io/noreverts as the url instead.
Does this RPC offer a secure & private RPC endpoint?
This endpoint focuses on privacy for users that want to perform transactions and it will not share TX data over WS. It prevents transactions failures (same as /noreverts).
Note: This endpoint is intended for sophisticated users who can unstuck transaction themselves.
While using MEV Blocker RPC, is it safe to ignore slippage control??
Goal of RPC is to prevent 99% of sandwiches but no existing solution can provide full 100% protection. Due to reorgs/forked blocks 0.1% of transactions might become publicly available before on-chain confirmation.
Who made MEV Blocker?
This collaboration represents our commitment to providing a trusted, neutral product available to all Ethereum users. We invite additional contributors - please get in touch if you're interested in supporting the project.
How do I participate as a searcher?
How can I get in touch?
What others are saying...
MEV Blocker fixed my marriage - Anon
I was tired of getting rekt, so I started using MEV Blocker - Anon
If I'd known about MEV Blocker sooner, I could've had a lambo by now - Anon
Robots should work for me, not against me - Anon
Nobody's stolen my lunch money since I started using MEV Blocker - Anon
I used MEV Blocker and I instantly went up a tax bracket - Anon