Flashbots Protect

Flashbots Protect is a privacy-preserving Ethereum RPC endpoint built to shield users from front-running, sandwich attacks, and other forms of harmful Maximal Extractable Value (MEV). By routing transactions through Flashbots’ private relay infrastructure instead of the public mempool, Protect ensures that transactions remain hidden until they are executed on-chain. This design significantly improves execution quality for users interacting with decentralized exchanges and other MEV-sensitive DeFi protocols.

トランザクションを公開でブロードキャストする標準的なEthereum プロバイダーとは異なり、Flashbots Protectはトランザクションを非公開のブロック構築パイプラインに直接送信します。Protectを通じて送信されたトランザクションは、メンプール監視者やMEVボットには一切表示されません。これらのトランザクションは、送信されたままの状態でブロックにアトミックに組み込まれるか、あるいは外部に露出することなく完全に破棄されるため、悪意のある攻撃者が確認前にトランザクションデータの順序を変更したり、コピーしたり、悪用したりすることを防ぎます。

Flashbots Protect is fully non-custodial, meaning users retain complete control over their funds and transaction signing at all times. It does not require smart contract changes, protocol integrations, or custom tooling — users simply switch their RPC endpoint to begin using it. This makes Protect an easy drop-in solution for wallets, traders, and applications seeking safer transaction execution without sacrificing decentralization or usability.

The service is permissionless and free to use, lowering the barrier to MEV protection for everyday Ethereum users. Flashbots Protect is particularly valuable for traders executing swaps, DAO treasuries submitting large transactions, and dApps that want to offer users improved protection against predatory trading behavior. By removing mempool visibility from the transaction lifecycle, Flashbots Protect helps restore fairness and predictability to Ethereum transaction execution.