KAST Earn
Earn up to 7% APY across two vaults. Tap to deposit. Withdraw whenever you want.
How to start earning
Your USD, earning every second.
Open the KAST app
From the home screen, tap Earn at the bottom.
Pick your vault
Treasury-backed or DeFi-powered. You choose.
Tap to deposit
Choose how much to deposit. No minimums.
Two ways to earn
Pick the vault that fits your dollars.
USD Prime Vault
USDKY is a stablecoin backed 1:1 by short-term U.S. Treasury Bill reserves, powered by the M0 protocol. When you deposit, your USD converts 1:1 into USDKY. As the Treasuries earn yield, that yield is reflected in the value of USDKY over time.
Backed 1:1 by US Treasuries
USDKY is collateralized by short-term U.S. Treasury Bill reserves. Verifiable onchain.
Powered by M0
The stablecoin platform trusted by MetaMask, Exodus and Usual.
Secured by Privy
Your USDKY is held in your own Privy wallet (a Stripe company) on Solana.
Gauntlet Alpha vault
Gauntlet is the risk management platform used by leading DeFi protocols, with $42B+ in assets under risk oversight. Your USD is deployed across top-tier stablecoin strategies on Base, curated by Gauntlet's team to balance yield with liquidity.
Top-tier protocols on Base
Your funds are deployed across stablecoin strategies on Base chain.
Managed by Gauntlet
$42B+ in assets supported by Gauntlet's risk models. $2B+ in self-custodial vault strategies.
Secured by Privy
Your Vault Shares are held in your own Privy wallet (a Stripe company) on Base.
FAQs
What is the USD Prime Vault?
USD Prime is KAST’s yield-enabled vault powered by USDKY. USDKY derives its value from the underlying M collateral, which consists primarily of short-term U.S. Treasury bills. Yield generated from this collateral is reflected in the value of USDKY over time.
USDKY is powered by the M0 protocol.
What’s the maximum that I can earn?
There is no cap on deposits or earnings. The APY displayed in the app is variable and reflects the vault’s current performance. Because returns are linked to underlying collateral yield, the APY may fluctuate over time and is not fixed or guaranteed.
How do you make sure my money is safe?
USD Prime is designed as a self-custodial vault.
- Self-custodial wallet
Your USDKY tokens are held directly in your Privy wallet. You maintain control of your assets at all times.
- Onchain ownership
When you deposit, you receive USDKY tokens directly in your wallet. You can verify your balance on-chain at any time.
- Reserve backing
USDKY derives its value from the underlying M collateral, which consists primarily of short-term U.S. Treasury bills.
- Access to funds
You can withdraw from the vault at any time by transferring USDKY back to your KAST Spending Account.
- Important note
This is not a bank deposit. Returns are variable, not guaranteed, and subject to market conditions and protocol performance.
When and how do I get paid interest?
Instead of receiving a cash payout, earnings are reflected in the value of your vault balance over time. As yield accrues, the redemption value of USDKY increases. You realize these earnings when you withdraw funds back to your KAST Spending Account.
Can I withdraw anytime?
Yes. Your funds are not time-locked. You can initiate a withdrawal from the vault back to your USD Virtual Account at any time, subject to standard processing times.
Are there any fees?
KAST currently passes on 100% of the net yield displayed in the app to users. Fees may be introduced in the future, and users will be notified in advance if this occurs.
What is the Gauntlet Alpha Vault?
KAST Earning allows you to deposit USD into the Gauntlet USD Alpha vault. Curated by Gauntlet’s quantitative team, this vault automatically deploys your funds across top-tier DeFi (Decentralized Finance) protocols to capture the best risk-adjusted yields.
What’s the maximum that I can earn with the Gauntlet Alpha Vault?
There is no cap on deposits or earnings. The displayed APY is variable and reflects the vault's current performance. Note that because the strategy adapts to changing markets, the APY will fluctuate over time.
How do you make sure my money is safe?
This product is self-custodial, which gives you direct control over your "Vault shares." This is fundamentally different from a traditional custodial account:
- Your Smart Wallet
Your funds are held in a secure, onchain smart chain wallet. - Onchain proof
When you deposit, you receive "Vault Share" tokens directly in your smart wallet. This is your onchain, verifiable proof of ownership—you can see your assets on a block explorer at any time. - Safety Controls
Gauntlet applies institutional-grade risk management. This includes limiting exposure to "blue-chip" stablecoins and strictly constraining position sizes based on available liquidity to ensure you can exit positions smoothly. - Risks
This is not a bank deposit. Yields are generated via onchain strategies which carry smart contract and liquidity risks.
When and how do I get paid interest?
The vault auto-compounds rewards. Instead of a daily cash payout, the value of your Vault Shares increases as the strategy earns yield. You realize these earnings when you withdraw back to your Spending Account.
Can I withdraw anytime?
Yes. Your funds are not time-locked. You can initiate a withdrawal from the vault back to your USD Virtual Account at any time, subject to standard processing times.
Are there any fees?
KAST currently passes on 100% of the net yield displayed in the app to users. Fees may be introduced in the future, and users will be notified in advance if this occurs.
It’s a wild world. Keep it stable.
