Solidly V3 is a concentrated liquidity exchange: the tick based design that made concentrated liquidity the standard for onchain depth, rebuilt so that liquidity providers are paid in incentives distributed by the protocol rather than in fees that pile up inside each position, and so that a swap is one call to the pool, paid by transfer, with nothing to call back.
The engine is the proven one. Every pool runs the same swap math, the same tick ladder and the same rounding as the design it descends from, so the depth stacked around the price behaves exactly the way the most battle tested venues in the space behave. The fee is the part that moves: each pool's fee is set and retuned by the protocol through the day, so a stablecoin pool can charge a fraction of a basis point when the market is calm and more when it is not, and a trade pays whatever the pool charges at the moment it lands.
That is where the friction lives. The cheapest stablecoin route on Base is often a pool whose fee was moved an hour ago, and the difference between a good fill and a bad one is whether anyone checked. The fee that was a rounding error at lunch is a cost by dinner. The rebalance between two dollars you meant to make crossed the pool three blocks after its depth moved somewhere else.
Every Solidly V3 pool on Base is a step in a plug. Its pools route alongside every other venue Plug sees, priced at the fee each one charges right now and settled through its own swap, so a trade takes the Solidly V3 fill exactly when it is the best one and skips it when it is not. A swap can also name one pool outright, floored at the pool's own quote, and execute when a condition is met rather than when a person is awake.
A stablecoin rotation that takes the thinnest fee on Base the moment it is the thinnest. A rebalance that splits across Solidly V3 and every other book in one route. An exit that waits for the pool's fee to fall back before it trades.
The flow that pays the least to move a dollar on Base is already routing by rule. A trade that waits for a person to compare fees has already paid the difference.
