What exactly is Euler Finance and how does it differ from earlier lending protocols?
Euler Finance is a modular, permissionless credit protocol built on Ethereum. Unlike monolithic lending systems where all assets share one risk pool, the Euler Finance platform splits markets into isolated vaults. Each vault is governed independently. This means a problem in one market cannot cascade into unrelated ones — a meaningful departure from how protocols like Compound or Aave v2 worked. The architecture draws on ERC-4626 vault standards, making integrations straightforward for developers already familiar with that spec.
How do lending vaults work on Euler Finance?
Each vault on the Euler Finance platform holds a single asset. Depositors supply that asset and receive vault shares in return — ERC-4626 compliant tokens that accrue interest over time. Borrowers draw from the vault by posting collateral in a separate vault. The two vaults are linked through a market configuration set by a risk manager or curator. Interest rates adjust automatically based on utilisation, following an interest rate model chosen at vault creation.
Who manages risk on the Euler Finance platform?
Risk management on Euler Finance is handled by curators — external teams or DAOs that configure and maintain specific markets. Well-known curators like Gauntlet and Sentora set collateral factors, supply caps, liquidation parameters, and oracle choices for each market they govern. The Euler DAO also manages some core markets directly. Because curators operate independently, users can choose markets based on the curator's track record and methodology rather than trusting a single protocol-wide risk committee.
Is Euler Finance audited? What security measures are in place?
Yes. The Euler Finance v2 smart contracts have been audited by multiple independent security firms before deployment. The core contracts were reviewed both individually and in combination to test interaction-level edge cases. Beyond audits, the protocol uses a timelocked governance model for parameter changes in DAO-managed markets, limiting the speed at which any actor can introduce risky configurations. A bug bounty program is also active. That said, no audit eliminates all risk — users should always read the risk disclosures before depositing.
What is the EUL token and what is it used for?
EUL is the governance token of Euler Finance. Holders can vote on proposals that affect DAO-managed markets — things like adding new collateral assets, updating liquidation bonuses, or adjusting interest rate models. EUL is also used in some liquidity incentive programmes. The token does not capture a share of protocol fees by default, though governance can vote to change that. You can borrow or lend EUL itself in the dedicated EUL Lending market visible on the Explore page.
Can I use Euler Finance if I only want to earn yield without borrowing?
Absolutely. Supplying assets to a Euler Finance vault earns interest paid by borrowers in that market. You deposit, receive vault shares, and withdraw whenever liquidity allows. There is no lock-up period at the protocol level — though if a vault is heavily utilised, your exit may be delayed until borrowers repay or new liquidity enters. For a more passive experience, the Earn section aggregates yield strategies across multiple Euler Finance vaults. It is a good starting point for users who want exposure without managing positions manually.
What does "max ROE" mean in the market listing?
ROE stands for Return on Equity. The "best max ROE" figure shown for a market is the highest theoretical annualised return a borrower could earn by using leverage in that market — borrowing an asset, deploying it in a yield strategy, and repeating. The metric assumes optimal leverage and ignores execution costs, so treat it as an upper bound rather than a guaranteed number. It is calculated per collateral-borrow pair and updated in near real time as rates shift.
How does liquidation work on Euler Finance?
When a borrower's health factor drops below 1.0, their position becomes eligible for liquidation. A liquidator repays part of the debt and receives the corresponding collateral at a discount — the liquidation bonus. On Euler Finance, the bonus and the portion that can be liquidated in a single transaction are configurable per market. This design lets curators tune aggressiveness based on asset volatility. Highly volatile collateral markets tend to allow larger liquidations with bigger bonuses; stable-coin-against-stable-coin pairs usually have tighter parameters.
What are Frontier markets and should I use them?
Frontier markets are isolated vaults for newer or more experimental assets — things like early-stage protocol tokens or less liquid DeFi positions. They are permissionlessly deployed and are not actively monitored by a professional risk team. The Euler Finance interface labels them clearly. Supplying to a Frontier market can offer higher yields, but the absence of active risk management means you are taking on more model risk. Read the market description carefully before committing funds. They are not suitable for risk-averse users.
Why should I choose Euler Finance over a more established lending protocol?
A few reasons stand out. First, the modular vault design means Euler Finance can list assets that monolithic protocols never would — because a bad listing only harms its own isolated market. Second, the curator model brings professional risk management to specific niches, like Sentora's RWA-focused markets or Cozy Finance's insured USDC vault. Third, Euler Finance v2 was built with ERC-4626 composability in mind from day one, so integrating it into other DeFi projects is genuinely less painful than retrofitting older contract designs.
How do I connect a wallet and start using Euler Finance?
Open the Euler Finance app and click "Connect wallet" in the top right. The app supports MetaMask, WalletConnect, Coinbase Wallet, and several other signers. Once connected, head to the Explore tab to browse available markets. Pick a vault that matches your asset and risk preference, then click through to the detail page. From there you can supply or borrow in a few clicks. Gas fees on Ethereum mainnet apply — check network conditions before transacting. The app also runs on networks with lower fees where Euler Finance has deployed.
Does Euler Finance support tokenised real-world assets?
Yes. The Sentora Ondo Global Markets is a curated market specifically built for borrowing against Ondo Finance's tokenised equities and ETFs — assets like OUSG and OSTB that represent traditional financial instruments on-chain. This is one of the more distinctive use cases on Euler Finance right now. As RWA adoption grows, the permissionless vault architecture makes it easy for other teams to stand up similar markets without waiting for protocol governance approval.
What happened to Euler Finance v1 and is it still accessible?
Euler Finance v1 suffered a significant exploit in March 2023, resulting in approximately $200 million in losses. The team subsequently worked with attackers and the broader community to recover the majority of funds. After recovery, Euler Finance rebuilt from scratch as v2 — a complete architectural redesign rather than a patch. The legacy app remains accessible at legacy.euler.finance for users who still have positions to manage, but all active development and new markets live on the v2 platform. The v1 incident directly shaped the security-first decisions in v2.
Can I build my own market on Euler Finance?
Yes, vault creation is permissionless. Any developer can deploy a new lending vault for any ERC-20 token, set an interest rate model, choose an oracle, and configure collateral relationships — all without asking the Euler Finance DAO for approval. The process is well documented in the official docs at docs.euler.finance. If you are comfortable with Hardhat or Foundry, deploying a test market on a fork takes under an hour. The harder part is attracting liquidity and convincing users to trust a new curator. The technical barrier is genuinely low.
Where can I find more information about the people behind Euler Finance?
The Euler Finance team page covers the project's background, core contributors, and the thinking behind the v2 architecture. For technical details, the docs cover contract specifications, oracle requirements, and integration guides. The community is active on Discord and X — links are in the app header. Governance discussions happen on the Euler DAO forum, which is worth following if you hold EUL and want a voice in protocol decisions.
