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I. of VExecution
Hook · I. OFA

OFA.

Orderflowauctionwithsealedsolvercompetition.

Large swaps trigger an N-block solver auction with AMM fallback.

Type
Execution
Status
—
Version
v1.0.0
Pools
0
Mechanics

How it works.

  1. 01

    Swaps above the configured threshold pause execution and open a sealed solver auction in the same transaction.

  2. 02

    Solvers bid for N consecutive blocks; the winning bid fills the trade at an improved price relative to the AMM curve.

  3. 03

    If no solver responds within the window, the trade falls back to the regular AMM execution path with no penalty.

  4. 04

    Pending orderflow is held as ERC-6909 claims for the duration of the auction — there is no early withdrawal.

Integration

Code sample.

// Large swap automatically triggers OFA — no special params required
IPoolManager.SwapParams memory params = IPoolManager.SwapParams({
    zeroForOne: true,
    amountSpecified: -100_000e18, // large input → opens auction
    sqrtPriceLimitX96: MIN_SQRT_RATIO + 1
});
poolManager.swap(poolKey, params, "");