InfiniFi

Parameter	Description
Yield ID	`ethereum-usdc-infinifi-siusd`, `ethereum-usdc-infinifi-liusd-1w`, `ethereum-usdc-infinifi-liusd-4w`
Network	Ethereum
Deposit Token	USDC
Receipt Token	`siUSD` (staked) · `liUSD-1w` / `liUSD-4w` (locked)
Additional Rewards	None. Yield accrues into the share-token exchange rate.
KYC	Permissionless (`kycRequired: false`)
Cooldown	`siUSD`: none (instant exit when liquidity allows) · `liUSD-1w`: 7 days · `liUSD-4w`: 28 days

About

InfiniFi amplifies stablecoin yields by applying fractional-reserve allocation across liquid and maturity DeFi farms (e.g. Aave, Pendle, Ethena). Users deposit USDC through the InfiniFi gateway; the protocol mints iUSD under the hood and routes it into either a staked (siUSD) or locked (liUSD) position depending on the yield ID.

The Yield API exposes three products:

Product	Receipt	Strategy	Risk / liquidity
siUSD	`siUSD`	Stake iUSD for liquid farm yield	Liquid; exits subject to redemption liquidity
liUSD 1w	`liUSD-1w`	Lock iUSD for 1 unwinding epoch (~1 week)	Higher locked yield; first-loss vs siUSD/iUSD
liUSD 4w	`liUSD-4w`	Lock iUSD for 4 unwinding epochs (~4 weeks)	Higher locked yield; first-loss vs siUSD/iUSD

User flow:

Deposit: Approve USDC and enter. The API builds APPROVAL + STAKE against the InfiniFi gateway (mint iUSD → stake or lock in one flow).
Earn: Yield compounds into the receipt token's exchange rate. Positions are valued in USDC via pricePerShare.
Exit: Product-dependent — see Exit behaviour.

Considerations

Exit behaviour

Product	Exit via Yield API	Notes
`siUSD`	Supported (instant)	Redeems to USDC when the InfiniFi redemption queue is empty. If the queue has pending entries, exit returns HTTP 412 (`UnstakeTemporarilyDisabled`) — async queue redemption is not supported in this MVP.
`liUSD-1w` / `liUSD-4w`	Not supported (MVP)	Async unlock and redemption are not exposed yet. Enter and balances work; exit is rejected with HTTP 412.

siUSD exit is APPROVAL (siUSD → helper, if needed) + UNSTAKE.

First-loss tranche (liUSD)

liUSD holders take first-loss relative to siUSD / iUSD if an underlying farm realizes a loss, in exchange for higher locked yield and governance voting weight (longer lock → more power). Document this risk in your UX before offering locked products.

Balances

Product	Balance type	Share token
`siUSD`	`staked`	`siUSD`
`liUSD-*`	`locked`	`liUSD-1w` / `liUSD-4w`

Amount fields are denominated in USDC; shareAmount / shareToken expose the receipt position.

Pending Actions

None for the current MVP surface.

List of Integration IDs

Ethereum

Yield ID	Yield	Receipt	Cooldown	Exit
`ethereum-usdc-infinifi-siusd`	InfiniFi siUSD	`siUSD`	None	Instant (liquidity / queue gated)
`ethereum-usdc-infinifi-liusd-1w`	InfiniFi liUSD 1w	`liUSD-1w`	7 days	Not supported (MVP)
`ethereum-usdc-infinifi-liusd-4w`	InfiniFi liUSD 4w	`liUSD-4w`	28 days	Not supported (MVP)