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wstLINK/FrxUSD on Morpho: Borrow Stables Against Staked LINK

Complete guide to the new wstLINK/FrxUSD Morpho Blue market: borrow FrxUSD stablecoins using wstLINK as collateral, keep your staking yield, and access USD liquidity without selling LINK.

stake.link team10 min readMorphoDeFiFrxUSDwstLINK
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Every LINK holder faces the same dilemma: you need USD liquidity, but selling means giving up your position: staking yield gone, price exposure gone, taxable event triggered. The wstLINK/FrxUSD market on Morpho Blue solves this. Deposit your wrapped staked LINK as collateral and borrow FrxUSD, a stablecoin from Frax Finance. Keep your LINK. Keep your staking rewards. Access stablecoins on your own terms.

What is the wstLINK/FrxUSD Market?

This is a lending market on Morpho Blue, the permissionless lending protocol. The setup is straightforward:

  • Collateral: wstLINK (wrapped staked LINK from stake.link)
  • Loan token: FrxUSD (Frax Finance stablecoin)
  • What you do: Deposit wstLINK, borrow FrxUSD
  • What you keep: Staking yield, LINK price exposure, your position

This is fundamentally different from the existing wstLINK/LINK market, which is designed for yield stacking and leveraged staking loops. The wstLINK/FrxUSD market is for capital efficiency: accessing USD liquidity without selling.

Why FrxUSD?

FrxUSD is Frax Finance's next-generation stablecoin, fully collateralized by real-world assets (RWA), not the old algorithmic model. Each FrxUSD is backed 1:1 by cash-equivalent reserves held with institutional custodians, with ~$114 million in circulating supply.

  • Contract: 0xCAcd6fd266aF91b8AeD52aCCc382b4e165586E29
  • Backed by: BlackRock BUIDL (tokenized T-bills), WisdomTree WTGXX (regulated money market fund), Superstate USTB, Bridge.xyz USDB
  • Multi-custodian: No single point of failure, diversified across multiple institutional custodians
  • Chainlink integration: Uses Chainlink Price Feeds for USD pricing, natural fit for the Morpho oracle framework
  • Deep Curve liquidity (frxUSD/crvUSD primary pair)
  • Audited by CertiK, ChainSecurity, and Code4rena. $10M bug bounty active.
  • Yield variant: sfrxUSD (ERC-4626) generates yield from T-bill rates and DeFi strategies

How It Works: Step by Step

01

Stake LINK

Deposit LINK on stake.link to receive stLINK, the liquid staking token that accrues Chainlink staking rewards.

02

Wrap to wstLINK

Convert stLINK to wstLINK, the non-rebasing wrapped version. This is necessary because lending protocols like Morpho require fixed-balance tokens. wstLINK's value increases relative to LINK as staking rewards accrue, rather than increasing in quantity.

03

Deposit as Collateral on Morpho

Navigate to the wstLINK/FrxUSD market on Morpho Blue and deposit your wstLINK as collateral. Your wstLINK continues earning staking rewards the entire time it's deposited.

04

Borrow FrxUSD

Borrow FrxUSD stablecoins against your collateral. Use them however you want: trade, provide liquidity elsewhere, convert to USDC, or handle real-world expenses. All without selling your LINK.

Yield Breakdown

For FrxUSD Suppliers

If you hold FrxUSD and want yield, supplying it to this market earns you:

  • Base interest from borrowers, driven by utilization via Morpho's AdaptiveCurve IRM
  • ~5% APY in wstLINK incentives via Merkl campaigns managed by stake.link

For wstLINK Borrowers

Your effective borrowing cost is lower than the headline rate because:

  • Your wstLINK collateral earns ~4.5% staking yield while deposited
  • Borrow-side incentive campaigns further reduce effective cost
  • Net cost = Borrow rate − Staking yield − Borrow incentives

Key insight: Your wstLINK collateral continues earning staking rewards while deposited. The staking yield effectively subsidizes your borrowing cost.

Risk Assessment

Liquidation Risk

Unlike the wstLINK/LINK market (where the oracle uses the internal staking ratio and there's essentially zero depeg risk), the wstLINK/FrxUSD market requires a market price oracle for wstLINK/USD. If LINK's price drops significantly, your collateral value decreases relative to your debt and you may face liquidation. Always maintain a conservative LTV buffer.

Oracle Risk

The market relies on a price oracle to determine the value of wstLINK in USD terms. Oracle failures or manipulation could affect liquidation timing. Morpho Blue markets use immutable oracle configurations set at market creation.

FrxUSD Peg Risk

FrxUSD has maintained its peg since launch with no known depeg events, though its track record is short (launched late 2024). It's backed by institutional-grade RWAs (BlackRock BUIDL, WisdomTree WTGXX), but risks include custodial counterparty chains, NAV staleness during weekends (backing assets update daily/weekly, not real-time), and potential regulatory changes affecting tokenized fund structures.

Smart Contract Risk

Morpho Blue has been extensively audited and battle-tested with billions in TVL. The wstLINK token contract has been live and securing value since its deployment. Both have strong security track records, but smart contract risk is never zero in DeFi.

wstLINK/LINK vs wstLINK/FrxUSD

Two Morpho markets, two different strategies. Choose based on your goals:

AspectwstLINK/LINKwstLINK/FrxUSD
Core purposeEarn yield on LINK depositsBorrow stablecoins against staked LINK
Target userPassive yield seekersUsers needing USD liquidity
Supply APY~7% combined~5% in wstLINK incentives
Oracle typeInternal exchange rate (no depeg risk)Market price feed (LINK/USD volatility)
Liquidation riskMinimalMedium (LINK price drops)
What you getYield from borrowers + incentivesStablecoin liquidity without selling
ComplexitySimple: deposit and earnModerate: manage collateral ratio

How to Participate

1

Stake LINK at stake.link

2

Wrap to wstLINK via the stake.link interface

3

Open the market on Morpho Blue: search for wstLINK/FrxUSD

4

Supply FrxUSD (for yield) or deposit wstLINK and borrow (for stablecoin liquidity)

5

Claim incentives at Merkl

Track live market data (TVL, utilization, APY, whale activity, and more) at www.stakedotlink.money.

This is not financial advice. DeFi protocols carry smart contract risk. Always manage your positions conservatively and understand the liquidation mechanics before borrowing.

Frequently asked questions

What is the difference between the wstLINK/LINK and wstLINK/FrxUSD markets?

The wstLINK/LINK market is for yield stacking: deposit LINK, earn from borrowers, or loop for leveraged staking yield. The wstLINK/FrxUSD market is for capital efficiency: deposit wstLINK as collateral and borrow FrxUSD stablecoins without selling your LINK.

Does my wstLINK still earn staking rewards while deposited as collateral?

Yes. wstLINK's value increases relative to LINK as staking rewards accrue. This happens automatically via the exchange rate: your deposited wstLINK becomes worth more LINK over time, regardless of where it sits.

What happens if LINK's price drops?

Unlike the wstLINK/LINK market (which uses an internal exchange rate oracle with essentially zero depeg risk), the wstLINK/FrxUSD market uses a market price oracle. If LINK drops significantly, your collateral value decreases and you may face liquidation. Always maintain a conservative LTV buffer.

What is FrxUSD and is it safe?

FrxUSD is Frax Finance's RWA-backed stablecoin with ~$114M in circulating supply. It's fully collateralized by BlackRock BUIDL (tokenized T-bills), WisdomTree WTGXX, and other institutional-grade assets. No known depeg events, though it's relatively new (launched late 2024). Like all stablecoins, it carries risk.

Why would I supply FrxUSD to this market?

FrxUSD suppliers earn base interest from borrowers plus ~5% APY in wstLINK incentives via Merkl campaigns. This is competitive yield for a stablecoin deposit, paid in a productive asset (wstLINK).

How do I claim my wstLINK incentive rewards?

Incentive rewards are distributed via Merkl. Visit merkl.xyz, connect your wallet, and claim accumulated wstLINK rewards. Claims are gas-efficient and can be batched.

Can I use both markets at the same time?

Yes. You could supply LINK to the wstLINK/LINK vault for passive yield while also depositing wstLINK as collateral in the wstLINK/FrxUSD market for stablecoin borrowing. These are independent positions.

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wstLINK/FrxUSD on Morpho: Borrow Stables Against Staked LINK | stake.link Blog