Learn Fast Protocol

Preconfirmations, mev rewards, and sub-second swaps — everything you need to understand the fastest way to transact on Ethereum.

Fast Protocol

Fast swaps are sub-second token exchanges on Ethereum L1 powered by preconfirmations, Permit2 gasless approvals, and mev rewards.

Fast Protocol delivers sub-second Ethereum swaps via preconfirmations, with at least 90% of mev returned to users.

FAST RPC is a drop-in Ethereum RPC endpoint that routes transactions through mev-commit for sub-second confirmations and mev protection.

Validators who opt in to mev-commit earn preconfirmation fees on top of standard block rewards — roughly 20x the mev yield.

How preconfirmations work step by step — from transaction submission to builder commitment, block production, and L1 settlement.

Preconfirmations are cryptographic commitments from block builders to include your transaction, backed by slashable stake.

Fast Protocol returns at least 90% of the mev your swap generates. Learn how the order flow auction redistributes value back to users.

Miles are Fast Protocol's loyalty system — earned when your swaps generate mev, proportional to value created, building toward future rewards.