Introduction

MEV Blocker provides RPC endpoints designed to protect user transactions from MEV (Maximal Extractable Value) attacks such as frontrunning and sandwiching. In addition to protecting user transactions from the dangers of MEV, MEV Blocker leverages an order flow auction of searchers and builders to offer users rebates from backrunning for their trades.

MEV Blocker is built to:

• Protect users from frontrunning and sandwich attacks (MEV Attacks).
• Give users/integrators a rebate from backrunning opportunities created by the their flow.
• Provide the fastest inclusion time.

Key advantages

The key advantages that MEV Blocker offers in comparison to other RPCs include:

• Fast inclusion time — MEV Blocker is the fastest private MEV protection RPC across the market due to its innovative builder fee mechanism.
• Backrun rebates — MEV Blocker offers the highest rebates among RPCs thanks to its robust Order Flow Auction (OFA) and its decentralized Searcher network, which is why it gets the highest rebates in comparison to other RPCs.
• Transparent — All data is public within a 30-second delay.
• Customizable — MEV Blocker offers five different RPC endpoints that users/integrators can choose from based on their individual needs.
• Permissionless — All endpoints and features are fully permissionless; no gatekeeping.
• Free — MEV Blocker is built by experts to be user-friendly, easy to set up, and free for users to integrate.

Benchmarks

MEV Blocker excels across performance metrics such as speed, backruns, and success outcomes in the 2025 RPC Benchmark Comparison.

Supported chains

All features are supported on Ethereum.