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MEV Blocker vs Flashbots Protect

How MEV Blocker and Flashbots Protect differ on type, protection, rebates and what they’re built for.

MEV BlockerFlashbots Protect
TypePrivate RPCPrivate RPC
How it worksRoutes your transaction through a searcher auction instead of the public mempool; searchers bid for the right to back-run it and rebate up to 90% of the profit to you automatically.Sends your transaction privately to the Flashbots block-building auction. MEV-Share selectively shares hints so searchers can bid to back-run it, sharing the profit with you.
Protects againstFrontrunning & sandwiching on any Ethereum dAppFrontrunning, sandwiching & failed-tx reverts
RebatesUp to 90% of back-run value, auto-deposited90% of back-run MEV + gas-fee refunds
ChainsEthereumEthereum
SetupAdd RPC rpc.mevblocker.io to your walletAdd RPC rpc.flashbots.net to your wallet
Best forEveryday wallets that want rebatesThe conservative, battle-tested default

MEV Blocker

  • Largest adoption (4.5M+ wallets)
  • Up to 90% back-run rebates, auto-paid
  • Protects on any dApp once set as RPC
  • Ethereum mainnet only
  • Rebate size depends on searcher competition

Flashbots Protect

  • Most battle-tested private RPC
  • MEV-Share back-run rebates (90%) + gas refunds
  • Permissionless — no API key
  • Ethereum mainnet only
  • Back-run-only sharing today

Bottom line

Pick MEV Blocker for everyday wallets that want rebates; pick Flashbots Protect for the conservative, battle-tested default.