Napier
Napier AMM (TokiHook) Is Now Public
Explore the source code behind Napier's maturity-aware AMM, built as a Uniswap v4 Hook.

The source code for Napier AMM (TokiHook) is now publicly available on GitHub. Napier-authored contract files are marked BUSL-1.1; see the repository's licensing notes before reusing the code.
Built for Fixed-Maturity Markets
TokiHook is a maturity-aware AMM built as a Uniswap v4 Hook, designed to bring liquidity and execution to fixed-term assets.
Rather than treating every asset pair like a conventional spot market, TokiHook incorporates time to maturity and implied yields into its pricing mechanism. It supports Principal Token (PT) markets and gives curators control over pool configuration and risk parameters.
Building in the Open
Making the source code public allows developers, researchers, and market operators to inspect the implementation, review its design, and better understand the infrastructure behind Napier.
This is another step toward our broader vision: building market infrastructure for onchain fixed income, starting with DeFi yield trading and expanding toward global fixed-income markets.
We invite the community to explore the code. Use of the source code is subject to its applicable license terms.


