Resupply Review: Is Borrowing reUSD Worth the Risk?

Resupply is a decentralized stablecoin borrowing protocol on Ethereum. You supply crvUSD to a Curve Lend market, or frxUSD to a Fraxlend market, and borrow reUSD against the resulting lending position. That makes it possible to keep exposure to a lending market while using borrowed stablecoins elsewhere.

This is not the same as depositing a stablecoin into a savings account. You take on debt, and if your collateral value or position falls too far relative to what you owe, your position can be liquidated. The protocol says its Insurance Pool is used in liquidations and may cover losses tied to a distressed approved collateral market, but that is a protocol safety mechanism—not a guarantee that you will be made whole.

Resupply also offers RSUP rewards and an Insurance Pool where reUSD deposits can earn a share of protocol revenue and RSUP emissions. Rewards and rates can change, and the protocol does not publish a guaranteed return in its homepage text.

Resupply says the reUSD borrowing rate is the highest of three figures: half the relevant market’s lending rate, half the sfrxUSD rate, or 2%. In other words, 2% is a floor in that formula, not a promise that borrowing will cost exactly 2%. The other inputs can push the rate higher, and borrowing interest accrues while your debt remains open.

Your total cost also depends on the Curve Lend or Fraxlend market you use, transaction gas on Ethereum, and what you do with borrowed reUSD. Resupply does not publish a complete fee schedule in its homepage text, so check the current transaction and position details before confirming. Reusing borrowed funds in another yield strategy can add further contract, market, and liquidity risks; it does not make the borrowing cost disappear.

Compare the live borrowing rate with the yield you expect from your collateral and any use of reUSD. Treat RSUP rewards as variable rather than guaranteed income, and leave room for rates and market conditions to move.

The largest trust concern is a reported exploit. A search result dated June 26, 2025 said a flaw in Resupply was exploited and nearly $9.6 million was siphoned. That report alone does not establish which users or contracts were affected, what was recovered, or whether the vulnerable code was replaced. Check Resupply’s incident communications and confirm that the market and contracts you intend to use are not affected before approving a transaction.

Resupply describes its contracts as immutable and non-custodial, and says they were reviewed by auditors. Two audits are listed, but the auditor names, reports, scope and dates are not given in the homepage text. “Non-custodial” does not remove smart-contract risk: funds placed in a protocol can still be lost through bugs, compromised dependencies, or collateral-market failures.

The Insurance Pool is intended to absorb some liquidation and external collateral risks, but its existence does not guarantee that it has enough funds to cover a loss. Treat the reported exploit as a serious risk factor, not as proof that current contracts are safe or unsafe.

To use Resupply, you need an Ethereum wallet, crvUSD or frxUSD, and ETH to pay network gas. The collateral route depends on the stablecoin: crvUSD is supplied through a Curve Lend market, while frxUSD is supplied through a Fraxlend market. You then borrow reUSD against that position. Confirm the exact market and asset in your wallet before signing; similarly named tokens and markets are not interchangeable.

The homepage offers a wallet connection and a supply flow, but does not publish a supported-wallet list, mobile-app details, or expected transaction times. Ethereum transactions can take longer or cost more when network demand is high. You should also understand how your chosen lending market works before relying on Resupply’s interface to manage a position.

Start with a small amount you can afford to lose, and do not borrow up to the maximum available. Keep enough collateral headroom to withstand rate or market changes, and monitor both the underlying lending position and the reUSD debt after opening it.

Resupply is best suited to people who already understand lending-market positions, stablecoin debt, and liquidation mechanics. Its central trade-off is straightforward: you may keep earning from a crvUSD or frxUSD lending position while borrowing reUSD, but you add another protocol layer and another source of risk. Any strategy that puts reUSD to work elsewhere adds yet more dependencies.

This is a poor fit if you want principal protection, predictable returns, a simple deposit account, or a protocol with a fully documented security and incident history. Stablecoins can lose their pegs, lending markets can face liquidity or contract problems, and an insurance pool may not cover every loss. The reported 2025 exploit raises the bar for the checks you should do before using the protocol.

Resupply does not publish a complete fee schedule or specify all wallet and mobile support in its homepage text. Check current borrowing terms, the incident response, audit reports, and the status of the exact collateral market before putting funds at risk.