What is Morpho Protocol and how DeFi vaults work

Morpho Protocol, or Morpho, is an open lending protocol: public smart contracts where lenders supply assets such as USDC, borrowers pledge collateral worth more than their loan, and the interest borrowers pay goes to the lenders. It runs on Ethereum, Base and other networks and is one of the largest DeFi lending markets (the largest is Aave), with more than $16 billion in deposits in October 2026, according to Morpho.

How do you earn a yield with Morpho?

You deposit into a Morpho vault, and the vault lends your money in Morpho markets, where borrowers pay interest. That interest is your yield, and its rate moves with the demand for loans. In unflat, for example, Savings go into Morpho vaults on the Base network run by third-party curators, today Steakhouse Financial and Gauntlet.

Three words to know:

• Market: a pool that pairs one asset to lend with one asset accepted as collateral, under rules fixed when it is created.
• Vault: a smart contract that collects deposits of one asset and spreads them across several markets.
• Curator: the risk team that decides which markets a vault can use, how much it can put in each and what fees it charges.

How does lending work on Morpho?

On Morpho, a loan is written in code. Lenders supply an asset to a market, and borrowers lock collateral worth more than what they borrow. An interest rate model sets the rate from how much of the market is lent out, and if the collateral loses too much value, the loan is liquidated.

When you deposit money in a bank, the bank lends it to someone else, earns interest and passes a small part back to you. Morpho does the same job with smart contracts, rules written in code, on a public blockchain where every transaction can be seen.

“Decentralized” means that no single company runs the markets. The code is public, and each market is isolated, so its risks stay inside it. Once a market is created, its five parameters cannot be changed, not even by Morpho: the asset lent, the collateral, the oracle that prices the collateral, the interest rate model and the liquidation limit, called LLTV (Morpho docs).

Think of a market square: Morpho is the square, and each lending market is a stall with different rules. Morpho calls these variable-rate markets Morpho Blue.

The LLTV is what keeps loans overcollateralized. With an LLTV of 80%, $100 of collateral allows at most $80 of loan. If the loan goes past that limit, for example because the collateral loses value, a liquidator can repay the debt and take the collateral, plus a bonus (liquidation). The mechanism is written in the code: no one has to decide to apply it.

What is a Morpho vault and how does it earn a yield?

A Morpho vault is a smart contract that pools deposits of one asset, such as USDC, and lends them across several Morpho markets chosen by its curator. In return you get shares of the vault, and as borrowers pay interest, each share is worth more. That growth is your yield.

It works in four steps:

1. You deposit an asset, for example USDC, a dollar stablecoin.
2. The vault gives you shares, digital receipts for your part of the total.
3. The vault spreads the funds across lending markets, following its strategy.
4. As the loans pay interest, the value of your shares grows.

Morpho vaults follow ERC-4626, a shared technical standard for vaults, so shares are counted the same way in every vault. The strategy is set by a curator: a risk team that chooses which markets the vault can use, sets exposure caps and sets the vault’s fees. Most curator changes go through a timelock, a waiting period that lets depositors withdraw before the change takes effect.

It is like having a chef cook for you, with one difference: you can walk into the kitchen whenever you want and check every ingredient, because every allocation is on the blockchain.

Without a vault, you would have to watch many markets yourself, move your funds to wherever the rate is better and pay network fees on every move. A vault does this for you, by public rules.

How is Morpho’s code checked?

Morpho’s documentation lists more than 30 security reviews and contests of its contracts and apps (October 2026), by firms such as Spearbit, OpenZeppelin, ChainSecurity and Certora. Its core contracts cannot be changed after deployment, and their core logic is formally verified: mathematical proofs that specific properties of the code hold.

The full list is on Morpho’s audits page, and the proofs on its formal verification page.

Incidents are public too. On 10 April 2025, an update to the Morpho App, the website used to access the protocol, contained a configuration error. One user’s transaction was intercepted by a white-hat bot, c0ffeebabe.eth, which returned the funds. Morpho rolled the update back within four minutes of the alert, and its smart contracts were not affected (Morpho post-mortem).

Is it safe to deposit in a Morpho vault?

Not without risk. Even with public, verified code and overcollateralized loans, smart contracts can have bugs, price feeds can fail, collateral can fall faster than liquidations, and a curator can choose badly. A Morpho vault is not a bank account, and no public deposit scheme covers it.

The main risks, most of them on Morpho’s risk page:

• Smart contract risk: a bug in the code, however many reviews it has passed.
• Oracle risk: a wrong or manipulated price can trigger liquidations or leave bad debt.
• Bad debt: if the collateral loses value faster than liquidators act, a loan can be left unpaid, and the loss falls on lenders.
• Liquidity risk: when nearly all of a market’s money is lent out, lenders may have to wait to withdraw until borrowers repay or new deposits arrive.
• Curator risk: the curator chooses the markets and the caps. A poor choice can cause losses, although timelocks give depositors time to leave before most changes.
• Network risk: a problem in the blockchain the protocol runs on.

The difference from a bank is that every loan and every allocation is recorded on a public blockchain, so you can check where the funds are, what they earn and how they move.

unflat is a technology platform and is not a bank or a financial intermediary. Funds deposited through unflat are not covered by deposit guarantee schemes (FITD or equivalent) and are subject to risk, including loss of principal. Never deposit money you cannot afford to lose.

How does unflat use Morpho for your savings?

unflat is a savings app for the EU, and Morpho is where your Savings balance is lent. Money you move to Savings goes into Morpho vaults on the Base network run by third-party curators, today Steakhouse Financial and Gauntlet, chosen on protocol, collateral levels and track record. The interest borrowers pay is your yield.

Savings earned about 5% a year so far in 2026, variable. That figure is the average annual percentage yield of unflat Savings (USDC) without cover, from 1 January to September 2026; past rates do not predict future ones. The lending market sets the rate, not unflat.

All of this, from smart contracts to liquidations, is handled for you: you don’t choose the vault or watch the markets, and you see your Savings balance earn every second. The story behind unflat explains why we built it.

• Fees. unflat charges no fees and no subscription. Third parties may charge fees: MoonPay and Coinbase for card and bank payments, and the lending vaults, whose fees are deducted before the rate is calculated. Network fees on Base are currently paid by unflat through Pimlico.
• Custody. unflat is non-custodial: your money stays in a wallet only you control, and every transaction needs your signature. unflat can’t access your money.
• No lock-up. You withdraw whenever you want.

Why Morpho? For its security practices (public reviews, formal verification, core contracts that cannot be changed), for its on-chain transparency, and because its curated vault architecture lets professional risk curators manage each vault. More on where your money sits and who can move it.

Three things to remember

• Loans on Morpho are overcollateralized: the collateral is worth more than the loan.
• Vaults spread deposits across markets, and curators set their risk limits.
• Every loan and allocation is on a public blockchain, where it can be checked. unflat puts this in one savings app for the EU.