Secured Finance API

Secured Finance integration.

Secured Finance is a fixed-rate lending protocol whose vault products package lender positions into ERC-4626 vaults. This repository currently identifies the Ethereum JPYC lender vault by hardcoded address and exposes it through a dedicated protocol wrapper.

Secured Finance documents protocol trading fees on the underlying fixed-rate markets rather than explicit vault deposit or withdrawal fees. Market takers pay 0.25% for a 3-month duration, scaling linearly with duration at a 1.00% annualised rate, while limit orders and Itayose opening fills are fee-free. In this repository, that is treated as an internalised fee model because the cost is incurred in the underlying lending action instead of being charged directly on ERC-4626 redemption.