Observed arrival · 2026-09-21
Daemonfill: an AMM-backed UniswapX quoter on Base
An independent project that prices UniswapX RFQ requests from on-chain AMM liquidity and attempts atomic fills without holding inventory.
- For
- UniswapX, Base, and on-chain execution researchers
- Worth noticing
- The fill contract uses the swapper's input to fund the route, avoiding inventory while reserving gas for failed fills.
Field notes
Daemonfill describes a two-part execution system: a quote server ranks preloaded routes across multiple Base AMMs, while a separate fill engine simulates and submits each won order. Its contract is designed to fund the route from the swapper’s input and revert when the route cannot cover the reactor’s required output. The evaluation combines a shadow replay of fresh orders with a 300-order retrospective sample, but the author explicitly notes that live RFQ traffic and live fills are not yet available.
Observed signals
Read the marks
Editorial observations of this landing page, not a rating.
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