Euler

What is Euler?

Euler is a non-custodial DeFi lending protocol that lets users, curators, and institutions create isolated or connected lending markets for crypto assets without relying on a centrally curated asset-listing process. Its core problem statement is narrower than “general DeFi lending”: Euler attempts to make long-tail collateral, vault-specific risk controls, and programmable credit markets usable without forcing all assets into one shared risk pool.

The protocol’s current moat is its modular architecture, centered on the Euler Vault Kit and Ethereum Vault Connector, which allow ERC-4626 lending vaults to be configured with their own collateral rules, liquidation parameters, oracle stack, governance path, and inter-vault collateral relationships rather than inheriting a monolithic Aave- or Compound-style market design. (euler.finance)

Euler is best understood as DeFi credit infrastructure rather than a Layer 1 network or a broad consumer financial app. As of late July 2026, CoinGecko placed EUL in the low hundreds by market-cap rank, while DefiLlama’s Euler V2 dashboard showed Euler V2 with hundreds of millions of dollars in TVL, larger active loans than headline TVL, and meaningful but volatile fee generation. The sharp distinction between deposits, TVL, active loans, and fee flow matters because Euler’s own 2026 retrospective acknowledged that prior growth was partly incentive-driven and mobile, with deposits rising rapidly after V2 and then proving less sticky than headline TVL implied. (coingecko.com)

Who Founded Euler and When?

Euler began as Euler XYZ, a UK-based DeFi startup formed after winning Encode Club’s Spark University Hackathon, and was publicly introduced in December 2020 by Dr. Michael Bentley. The original founder group named in Euler’s launch announcement was Michael Bentley, Jack Prior, and Doug Hoyte, with an $800,000 seed round led by Lemniscap; the project later raised larger rounds, including an $8 million Series A led by Paradigm in 2021 and a $32 million token-financing round led by Haun Ventures in 2022, during a period when DeFi lending markets were moving from experimental protocols into venture-backed financial infrastructure. Euler’s DAO model and EUL governance token followed the broader 2020–2022 DeFi pattern: protocol development initially centered around a core lab, while parameter control, treasury allocation, and token incentives were progressively pushed toward token-holder governance. medium.com

The project’s narrative has changed materially. Euler V1 was positioned as a permissionless money market for the long tail of ERC-20 assets, competing with Compound and Aave by reducing reliance on centrally approved listings. After the March 2023 exploit and subsequent recovery of funds, the project rebuilt around Euler V2, shifting the narrative from “one lending protocol with more flexible listings” to “a modular credit layer” where independent vault creators and curators build markets on common infrastructure. By 2026, Euler Labs’ own messaging had become more sober: the team argued that Euler had tried to be a product, infrastructure layer, DEX, and market operator at once, and that the strategic reset was to make the protocol the rail network while curators operate the financial products on top. (euler.finance)

How Does the Euler Network Work?

Euler is not a sovereign blockchain and therefore does not have its own validator set, native block production, or independent consensus mechanism. The EUL token is an ERC-20 asset, and the protocol operates through smart contracts deployed primarily on Ethereum and other EVM-compatible chains; for settlement, finality, and censorship-resistance assumptions, it inherits the underlying chain’s consensus rather than replacing it. On Ethereum, that means Proof-of-Stake, validator-based block proposal and attestation, and transaction fees paid in ETH rather than EUL. Euler’s MiCA crypto-asset white paper explicitly describes EUL as operating on Ethereum’s Proof-of-Stake infrastructure, while protocol interactions such as lending, borrowing, liquidation, governance voting, and Fee Flow execution are deterministic smart-contract operations rather than messages processed by a separate Euler network. (euler.finance)

Technically, Euler V2 is organized around vaults rather than a single global liquidity pool. Each vault is an ERC-4626-compatible credit primitive that can be isolated, governed, ungoverned, collateral-only, borrow-enabled, or connected to other vaults through the Ethereum Vault Connector.

The connector introduces sub-accounts, batching, and operator permissions, allowing positions and collateral relationships to be composed across vaults without forcing every borrower and lender into the same collateral universe. Security is correspondingly layered: immutable vaults reduce governance attack surface but leave users responsible for exiting during stress, while canonical upgradeable vault factories include pause guardians, a security council, a timelock, and DAO-controlled proposal roles. This is not decentralization in the purest sense; it is a trade-off between emergency intervention capacity and governance or multisig trust. (euler.finance)

What Are the Tokenomics of eul?

EUL has a fixed total supply of 27,182,818 tokens, a figure chosen as a reference to Euler’s number, e. The token is not inflationary in the conventional protocol-emissions sense because there is no open-ended minting schedule, but circulating supply can still change as locked allocations vest, rewards are distributed, and rEUL conversion mechanics alter effective float. Euler’s documentation breaks the allocation into the DAO, protocol users and ecosystem growth, the Euler Foundation, strategic partners, and Euler Labs contributors; as of the documentation snapshot dated January 31, 2025, strategic partners represented a large fully unlocked cohort, while the DAO treasury and user-reward categories continued to change through governance-approved incentive programs. The MiCA white paper states that the total supply is fixed and that EUL has no asset backing or intrinsic claim on external reserves. (docs.euler.finance)

EUL’s utility is governance, incentive distribution, and protocol fee routing rather than gas payment. One EUL corresponds to governance voting power, and the token is used in Fee Flow auctions, where protocol fees collected in assets such as stablecoins can be auctioned for EUL and the EUL returned to the DAO treasury. That design creates potential buyback-style demand when fees are active, but it is governance-contingent rather than automatic equity-like cash flow. Recent tokenomics changes are important: rEUL rewards introduced a locked reward form that converts 1:1 into EUL over six months, with early redemptions forfeiting and burning the unvested portion; separately, Euler Labs said in 2026 that it would recommend reducing protocol fees to zero for the foreseeable future and pausing Fee Flow as a growth measure, meaning value accrual through fees was being deliberately deemphasized relative to curator adoption. (docs.euler.finance)

Who Is Using Euler?

Euler’s usage is primarily DeFi-native credit activity: stablecoin lenders, leverage users, vault curators, risk managers, and market creators who want configurable collateral rules.

Trading volume in EUL itself is a weak signal of protocol use; a better read comes from lending supply, active loans, borrow utilization, fee generation, and the number and quality of vaults using the EVK/EVC stack. As of late July 2026, DefiLlama showed Euler V2 activity spread across Ethereum and several EVM chains, with Monad and Ethereum among the largest contributors to TVL, but Euler’s own 2026 review warned that earlier expansion across too many chains created incentive-driven deposit spikes that did not necessarily translate into durable users. In practice, the active user base appears more professional and curator-driven than mass retail, which is consistent with the protocol’s shift toward infrastructure and risk-curated markets. (defillama.com)

The more institutionally relevant adoption vector is tokenized collateral rather than retail borrowing. Euler has worked on permissioned vault designs with Securitize-compatible markets, allowing assets such as VBILL, VanEck’s tokenized Treasury fund, and STAC, a tokenized AAA CLO fund, to be used in lending markets while preserving eligibility, ownership, and transfer restrictions at the vault level.

This is a legitimate institutional use case, but it should not be overstated: Euler is providing lending and collateral infrastructure, not distributing the underlying securities, guaranteeing liquidity, or eliminating the legal and liquidation constraints that accompany permissioned real-world assets. (euler.finance)

What Are the Risks and Challenges for Euler?

Euler’s regulatory exposure is typical of DeFi governance-token and lending-protocol assets but complicated by its RWA ambitions. In the EU, Euler’s MiCA white paper states that the document was not approved by a competent authority and that EUL is not covered by investor-compensation or deposit-guarantee schemes; it also says EUL is not a utility token under that document’s classification framework.

In the United States, no active SEC or CFTC lawsuit against Euler or EUL was identified in the reviewed public sources, and there is no EUL ETF approval or comparable regulated fund product. The more realistic regulatory risk is indirect: permissioned collateral markets, KYC-restricted tokenized securities, front-end access controls, governance participation, and exchange listings may all be affected by changing securities, commodities, broker-dealer, and stablecoin rules. (euler.finance)

The centralization and operational risks are more immediate. Euler’s canonical vault factory can include pause and upgrade powers, with roles distributed among Euler DAO multisigs, Euler Labs operations, monitoring firms, and a security council, which improves emergency response but creates trust assumptions around who can pause, propose, cancel, or approve changes. The 2023 exploit remains the central historical risk event: DefiLlama records a $197 million Euler V1 exploit classified as protocol logic, with returned funds later exceeding the stolen amount due to asset-price changes. Euler V2’s modular architecture reduces contagion by isolating markets, but it cannot remove oracle risk, curator misconfiguration, liquidity runs, governance capture, or the possibility that long-tail collateral becomes unliquidatable under stress. (defillama.com)

What Is the Future Outlook for Euler?

Euler’s outlook depends less on the EUL price and more on whether the protocol can become credible lending infrastructure for curators, RWAs, and advanced DeFi credit products without repeating the incentive-led growth cycle it criticized in its own retrospective.

The verified near-term roadmap includes a rebuilt application stack, public APIs and SDK improvements, curator dashboards, open-source liquidation bots, EulerEarn redeployment, possible chain deprecations for low-activity deployments, and a fee-structure reset that may keep protocol fees near zero until usage reaches more durable scale.

EulerSwap and fixed-rate or fixed-term lending concepts remain part of the broader design space, but Euler Labs has explicitly indicated that these should return only when liquidity, infrastructure, and curator operations are mature enough to support them. (euler.finance)

The structural hurdle is credibility. Euler has strong technical primitives, but the lending market is dominated by Aave, Morpho, Spark, Compound, and specialized credit venues, many of which have deeper liquidity, clearer distribution, or simpler risk narratives.

Euler’s most plausible path is not to out-Aave Aave in generalized retail lending, but to win niches where modularity is essential: permissioned collateral, isolated RWA vaults, curator-specific markets, cross-vault credit relationships, and on-chain products that need custom liquidation and oracle logic. That path is viable but demanding; it requires disciplined chain selection, transparent risk attribution, strong curators, reliable data infrastructure, and a token model that can eventually capture value without taxing the very liquidity providers it needs to attract.