Surge Fees
Fee scales with trade size — one of the five blocks a Hookr hook can stack.
What it does
The LP fee scales with how much of the pool's in-range depth a trade consumes, from your base fee up to your ceiling. No oracle involved.
The sharp edge
The ramp reacts to trade size relative to pool depth, so the same ETH amount pays a higher fee in a shallow pool than in a deep one. The ceiling is a hard bound — the hook rejects a ceiling below the base fee outright.
Parameters
Base fee0.05% – 1% · default 0.3%Swap fee when the pool is calm.
Max fee1% – 10% · default 3%Ceiling for large trades relative to pool depth.
Size sensitivity1X – 10X · default 5XHow fast the fee ramps as a trade eats the pool.
The builder estimates about 120k extra gas per swap for this block.