Crest
Programmable lending platform for tokenized stocks. Borrow against your tokenized stock. Custos pays the debt down while you sip your coffee, and it can never borrow or sell so no worries
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描述
Borrow against your stock. Custos guards the debt.
Crest is a borrowing account for Robinhood Stock Tokens on Robinhood Chain, built on Arbitrum. You put a stock token in as collateral, borrow USDG through Morpho Blue, and park the borrowed USDG in one fixed vault. A guardian called Custos watches the loan around the clock.
The problem
Stock Tokens trade 24 hours a day, but the real market behind them is closed for 17.5 of those hours. When the price drops at 3 a.m., a borrower today has two bad options:
Watch it yourself, and if you miss one night, a liquidator sells your collateral at a penalty.
Hand a bot your private key, and now that bot can borrow more, swap, or send your funds anywhere.
What Crest does
Crest splits the authority inside one non-upgradeable smart contract, CrestAccount.
Owner | Custos | |
|---|---|---|
Create debt | Yes, only the owner | Never |
Change limits, unfreeze, change guardian | Yes | Never |
Withdraw collateral or stablecoins | Yes | Never |
Freeze new borrowing | Yes |
|
Repay this account's debt from idle funds | Yes |
|
Repay this account's debt from the vault | Yes |
|
Those three functions are Custos's entire interface. Custos cannot choose a receiver, a market, a vault, a swap, or an arbitrary call. If someone steals the Custos key, the worst they can do is freeze borrowing or pay the owner's debt early.
How a bad day plays out
The stock price falls and the loan crosses the owner's upper LTV band.
The monitor reads the Morpho position, vault liquidity, oracle, and policy, all at the same block.
Custos simulates the exact call, then freezes new borrowing.
Custos repays part of the debt from the vault, within the owner's per-action cap.
The receipt is reconciled: debt before, debt after, shares burned.
Why it matters
Owner-only debt: the guardian can only make the debt smaller.
Bad data only tightens: stale, paused, or missing inputs block actions or freeze borrowing. They never loosen a limit.
Real liquidity: strategy repayment is bounded by what the vault can withdraw right now, not by TVL or share price.
Separate facts: projected carry, realized vault earnings, and actual debt reduction are never blended into one number.