Step 1
Deposit USDF
Approve the vault once, then deposit. You receive sUSDF, the vault's share token.
[ stake ]
Stake USDF. Earn more.
sUSDF is the optional vault for USDF. Deposit USDF, receive sUSDF, and a share of the gateway's spread raises the value of every sUSDF after each settlement. Withdraw back to USDF at the share price.
// vault
Stake or unstake
FromUSDFYour wallet
TosUSDFsUSDF vault
StepApprove once, then deposit
Approve USDF to the vault once, then deposit to receive sUSDF.
// how it works
How staking works
Step 2
The gateway settles
After each settlement batch, a fixed share of the gateway's spread is paid into the vault.
Step 3
Each share is worth more
The number of sUSDF you hold stays the same; the USDF each one redeems for goes up.
Withdraw
Back to USDF
Redeem sUSDF for USDF at the current share price. The cooldown shows here once the vault is live.
Standard
ERC-4626 vault
A standard tokenized vault, so wallets and tools that read ERC-4626 understand it.
// compare
Hold or stake
| Hold USDF | Stake for sUSDF | |
|---|---|---|
| How you earn | Weekly payouts in USDF, by balance and time held | The value of each sUSDF rises after each settlement |
| Action needed | None. No staking, no lock | Deposit into the vault |
| Spend on compute | Yes, directly | Withdraw to USDF first |
| Withdraw | Not needed | At share price |
| Source | USDF revenue | The gateway's spread |
// safety
What staking does not touch
The reserve
Yield comes from gateway revenue, never from the reserve. Every USDF stays backed 1:1 by USDG in the token contract, staked or not.
Redemption
Foundry cannot pause redemption. Withdraw sUSDF to USDF, then redeem USDF 1:1 for USDG at any time. Redemption depends on USDG transfers succeeding: USDG is issued by a regulated issuer that retains pause and freeze powers over its own token.
Your keys
sUSDF sits in your own wallet. Every vault deposit is onchain and listed above.
// questions
Questions
Do I have to stake to earn?
No. Holding USDF already earns weekly with no staking and no lock. sUSDF is optional.
Why is the button greyed out?
Staking opens once the vault is configured on the gateway. Figures appear only when the gateway provides them.
Can the share price go down?
The vault only receives revenue deposits; nothing is taken out of it except withdrawals at the share price.
Where can I check deposits?
Every revenue deposit is listed in the vault table above with its transaction, and on Transparency.