StableYield app
Hold mortgage yield
in seconds.
One token, traded on a public curve like any other. No account to open, no minimum to clear, and nothing standing between a holder and the chain the reserve sits on.
Reserve
Claimable fees
$STABLE holders
Curve holders
Protocol
Real estate debt,
made liquid.
Three steps, each of them verifiable. The fee is the curve's own creator mechanism, the reserve is an address anyone can read, and the mandate is written down here.
01
Buy
$STABLE trades on a bonding curve priced in ETH, then moves to a locked AMM pool once the curve graduates. Each swap carries a 1% curve fee plus a 2% creator fee.
02
Reserve
That creator fee accrues in escrow to a single address — the Reserve. Its mandate is tokenized US mortgage credit, agency MBS ahead of everything else. Until such an instrument trades with real depth, it simply holds ETH.
03
Earn
Coupons, distributions and NAV changes on what the reserve holds go out to $STABLE holders pro rata. Payouts begin once the reserve owns something that yields, and not a day earlier.
Market reference · US rates
The asset class, priced weekly.
As of 2026-09-10
30-Year Fixed
15-Year Fixed
10-Year Treasury
4-Week T-Bill
Freddie Mac PMMS and U.S. Treasury yields via FRED. Reference rates for the asset class — market data, not a yield this project pays.
Why mortgages
The largest credit market in the world isn't onchain.
Mortgage credit sits senior in the stack, is secured against real property, and gets repriced every week. Agency MBS account for roughly a quarter of the US aggregate bond index — and effectively none of that trades onchain today.
This is built for the moment that changes. The reserve is being funded now, the mandate is public now, and the cards below read the explorer directly — so a market shows up here before anyone announces it.
Reserve mandate
What the reserve is allowed to hold.
In order of preference — an asset class, its nearest tokenized instrument, and whether that instrument has a real market yet.
Agency MBS
Fannie, Freddie and Ginnie pools
Onchain
Mortgage REITs
Levered agency and non-agency books
Onchain
Rule
The reserve buys the highest tier that actually trades with depth — more than fifty holders and a thousand transfers, read from the explorer rather than announced. Until that threshold is met it holds ETH. It never holds $STABLE.
Utility
Token
$STABLE launches through a public factory like every other token on the chain: fixed supply, nothing withheld, the curve locked. The only thing that makes it StableYield is where its creator fee goes.
Contract
Where a trade goes
Swap
A buy or sell of $STABLE on the curve, later in the AMM pool.
1% + 2%
1% is the curve fee. 2% is the creator fee, set at launch — a charge on top, not a slice of supply.
Escrow
The escrow credits that 2% to the Reserve address in ETH. Pulled by a claim, never pushed.
Reserve
Held as ETH, converted into mortgage credit the day it trades onchain.
Holders
Reserve income goes to $STABLE holders pro rata. Nothing is paid before it is earned.
Supply
Fixed by the factory config. No mint function, no team allocation, no presale.
Graduation
The curve graduates into an AMM pool with liquidity locked. The 2% continues as a hook fee.
Launch fee
Read from the factory. It is the entire cost of launching, and it goes to the factory.
Insights
The size of the thing.
US mortgage debt
Residential mortgage debt outstanding in the United States — the largest consumer credit market anywhere.
Federal Reserve, Z.1
Agency MBS
Share of the US aggregate bond index held in agency mortgage-backed securities — the slice the mandate reaches for first.
US Aggregate index
30-Year fixed
This week's average rate on a 30-year fixed mortgage — the number every homeowner knows, and the number a pool pays.
Primary mortgage market survey
iPhone
StableYield for iOS.
Soon.
Your reserve, your yield and the market reference in your pocket — reading the chain exactly the way this page does. Wallet in the app, keys on the phone.