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Fast Protocol is an order flow auction (OFA) system built on top of mev-commit that captures, routes, and redistributes mev across all participants in a transparent and incentive-aligned way.

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How It Works

When users send transactions through FAST RPC, the system:
  1. Auctions and simulates backruns for each transaction
  2. Realizes mev through backrun bundles
  3. Secures commitments from builders via mev-commit
  4. Distributes value — validators receive a share based on opt-in status, and the remainder flows into mev distribution contracts that fund user rewards

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Who Benefits

  • Users receive top-of-market mev refunds — at least 90% of the mev their transactions generate, and in mev-rich periods even more than 100%
  • Validators earn strictly more when opting in, and materially more than in other OFA systems
  • Builders maintain sustainable margins while delivering transactions
  • The protocol becomes more valuable as usage increases, creating a positive feedback loop

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Why It’s Unique

The system is designed so that no competing OFA can sustainably provide higher user mev refunds. If Fast Protocol offered less than 90% user refunds, users would switch to alternatives. If a competitor tried offering more, its builders or validators would become unprofitable. Fast Protocol optimally balances incentives so that all participants remain profitable.

Fast Protocol Economics

Full economic model, fee parameters, and equilibrium analysis.

What are Fast Swaps?

The swap interface built on Fast Protocol.