Every term, clearly defined.

A decentralized exchange mechanism that prices assets algorithmically instead of using an order book. The most common type uses the constant-product formula x·y=k: the pool holds two tokens and the product of their quantities stays constant. Every trade moves the price along the curve. Examples: Uniswap V2, SushiSwap.

A decentralized lending protocol where users supply collateral and borrow assets. Key parameters per asset: LTV (max borrow / collateral value), Liquidation Threshold (the LT beyond which a position is at risk), and Health Factor. Available on Ethereum, Arbitrum, Base, and 5+ other chains.

APR (Annual Percentage Rate) = simple annual return without compounding. APY (Annual Percentage Yield) = effective return with compounding. In DeFi, protocols usually display APY. The conversion: APY = (1 + APR/n)^n − 1 where n is the compounding frequency. A 10% APR compounding daily = 10.52% APY. When comparing yields across protocols, always check whether the displayed figure is APR or APY.

The practice of exploiting price differences between venues (DEX pools, CEXes) to make a risk-free profit. Arbitrageurs keep prices in sync across markets — when ETH is cheaper on Uniswap than Binance, they buy on Uniswap and sell on Binance until the gap closes. In AMMs, arbitrage is what actually moves the pool price to track the external market.

The interest rate charged on borrowed assets, expressed as APY. In Aave V3, borrow rates are dynamic and increase as utilization grows. They compound continuously. On GMX perpetuals, the "borrow fee" (~0.01%/hour on the borrowed portion) is separate — it covers the protocol's funding reserve.

For a leveraged trade: the price the underlying must reach for the position to cover all fees and return zero profit. Calculated as: entry ± (opening fees / position_size). On GMX with 0.14% round-trip fees, a $10,000 position needs a $14 move just to break even — before borrow fees.

In a lending protocol, bad debt arises when a borrower's collateral value falls below the debt value without being liquidated in time — typically during extreme market drops or oracle failures. The protocol absorbs the loss (reducing LP returns or drawing down a reserve fund). Aave V3 minimizes bad debt risk with conservative LTs, high liquidation bonuses, and liquidation incentives.

A mathematical relationship between a token's price and its supply, encoded in a smart contract. The classic AMM x·y=k is one type of bonding curve. Others include linear curves (price increases proportionally with supply) or sigmoid curves. Used for token launches, protocol-owned liquidity, and NFT pricing.

Payments made to veToken holders to direct emission rewards toward specific pools. In Curve/Convex and Balancer ecosystems, protocols with liquidity pools can pay USDC, tokens, or other assets to bribe vlCVX or veBAL holders to vote for their gauge. Bribes have created a secondary market (Votium, Paladin) for "renting" governance votes to boost liquidity.

How much liquidity a given amount of capital provides relative to a V2 full-range position. Uniswap V3 concentrated liquidity multiplier: CE = 1 / (1 − √(P_low/P_up)). A ±20% range gives ~5.5× capital efficiency — you earn the same fees with 5.5× less capital, but only while in range.

Assets deposited in a lending protocol to back borrowed positions. In Aave V3, collateral value (in USD, via Chainlink oracles) determines both how much you can borrow (LTV) and when liquidation is triggered (LT). Not all assets can be used as collateral — some are "supply only."

A position where you borrow at a known rate and invest in an asset expected to return more. In DeFi, the most common carry is borrowing stablecoins from Aave to hold leveraged ETH or BTC. The carry cost is the borrow APY; the expected return is the asset's price appreciation. If the asset doesn't outperform the borrow rate, you have a losing carry.

Uniswap V3's model where LPs specify a price range [Pa, Pb] for their capital. Unlike V2's full-range distribution, liquidity is only active while the pool price is between Pa and Pb — earning fees during that time and nothing outside it. Narrower ranges yield higher capital efficiency but a higher probability of going out of range.

A mechanism that halts or limits protocol operations when anomalous conditions are detected. In DeFi: pause functions on supply/borrow in Aave when an oracle reports a price deviation exceeding 50% in 30 minutes; or Chainlink's heartbeat check that triggers an alert if a price feed is not updated within N hours. Circuit breakers prevent cascading liquidations from oracle manipulation.

The risk that the other party in a financial arrangement fails to deliver. In DeFi: for a fiat-backed stablecoin, counterparty risk is the issuer going bankrupt or being shut down by regulators. For a CEX-dependent product (USDe, deUSD), it's the exchange failing mid-settlement. Counterparty risk is one of the four risk dimensions in the OrnyTools Stablecoin Analyzer.

In Morpho Blue's MetaMorpho architecture, a curator is a professional risk manager (e.g., Steakhouse Financial, MEV Capital, Gauntlet) responsible for allocating a vault's liquidity across Morpho Blue markets. The curator selects which collateral/loan pairs to use, sets supply caps, and rebalances exposure. Depositors delegate risk management to the curator without giving up custody of funds.

The invariant x·y=k that governs Uniswap V2 pools. After any trade, the product of token quantities is unchanged. This means price impact is non-linear: the larger the trade relative to the pool, the more the price moves against the trader. Slippage = A/(R+A) where R is pool depth.

In Aave V3 Isolation Mode, the maximum total amount that can be borrowed against a specific isolated asset, across all users. Example: ARB in isolation mode has a $14M debt ceiling — once that total is reached, no new debt can be issued against ARB collateral. Debt ceilings limit protocol exposure to newer or less liquid assets.

A position where price moves in the underlying asset produce no net P&L — gains on one leg are offset by losses on the other. USDe and deUSD achieve this by holding ETH spot/staked while running equal-size ETH short perpetuals. The dollar value stays constant regardless of ETH price, while the yield comes from staking rewards + funding rates on the shorts.

The probability that a stablecoin deviates significantly from its $1 peg. Short-term depegs (minutes, <1%) are common during high volatility. Long-term depegs indicate structural failure — LUNA/UST (−99% in 3 days, May 2022) being the most catastrophic. OrnyTools monitors 10 stablecoins live and alerts when price deviates beyond a configurable threshold.

A protocol for trading tokens directly from a wallet, without a central intermediary holding funds. DEXes run on smart contracts and use AMM curves (Uniswap, Curve), order books (dYdX), or hybrid models. Key difference from CEX: no custody risk, but also no fiat on/off ramp, higher gas costs, and smart contract risk instead.

Efficiency Mode — Aave V3's feature that allows much higher LTV and LT when collateral and debt belong to the same correlated category. ETH correlated E-Mode: LTV 93%, LT 95%, liquidation bonus 1%. This enables up to 13× leverage on a wstETH/ETH carry trade vs ~10× in normal mode.

Ethereum Improvement Proposal 1559 (active since August 2021) that split gas fees into two parts: a base fee (burned, set by network congestion) and a priority fee (paid to the validator for inclusion). On Arbitrum, the L2 execution fee is very cheap ($0.01–0.10) while L1 data posting cost is the main variable. This is why Arbitrum gas is 10–100× cheaper than mainnet.

An Ethereum token standard for yield-bearing vaults. A vault holds an underlying asset (e.g., USDC) and issues shares (e.g., aUSDC). As yield accrues, each share redeems for more underlying. Key function: previewRedeem(shares) → assets. Used by Aave's aTokens, Morpho's MetaMorpho vaults, wstETH, and wUSD0.

An uncollateralized loan that must be borrowed and repaid within the same transaction block. If repayment fails, the entire transaction reverts. Used for arbitrage, liquidations, and collateral swaps. Aave V3 offers flash loans with a 0.09% fee on the borrowed amount.

On perpetual DEXes, a periodic payment between longs and shorts to keep the perpetual price anchored to the spot price. When longs pay shorts, the market is in contango (longs dominant). GMX V2 uses a "borrow fee" model rather than traditional funding — longs and shorts both pay, the rate depends on open interest imbalance.

The cost of executing a transaction on a blockchain, paid to validators. Calculated as gas_used × gas_price (in gwei). A simple ETH transfer uses 21,000 gas; a complex DeFi interaction can use 500,000+ gas. On Arbitrum at 0.1 gwei, a complex transaction costs $0.05–0.10. On Ethereum mainnet at 30 gwei, the same can cost $5–50.

A smart contract that tracks liquidity in a specific Curve pool and distributes CRV emission rewards proportionally. veCRV holders vote weekly to allocate emission weight to gauges — higher gauge weight = more CRV rewards for LPs in that pool. The gauge weight system is why Convex Finance and Curve Wars emerged: controlling veCRV = controlling which pools attract liquidity.

The risk that protocol governance (token-weighted votes) passes a malicious or poorly-designed proposal that damages users. Attack vectors: governance token accumulation by a hostile actor, vote-buying via flash loans, voter apathy letting a small group push harmful changes. Aave and Compound have timelocks (48h delay) to allow users to exit before malicious proposals execute.

Aave's real-time solvency metric: HF = Σ(collateral × LT) / Σ(debt). HF = 1.0 means you are at the liquidation threshold. HF > 1.5 is generally safe. HF < 1.2 is high-risk — a 15% adverse price move can push you below 1.0.

The opportunity cost of holding tokens in an AMM pool vs. simply holding them. The formula: IL = 2√r/(1+r) − 1 where r = (current price / entry price). IL is symmetric: a 2× price move in either direction gives ~5.7% IL. It's "impermanent" only if the price returns to entry — otherwise it's a realized loss at withdrawal.

A risk containment feature for newer or more volatile assets. An isolated asset can be used as collateral, but: (1) only stablecoins can be borrowed against it, (2) no other collateral can be combined with it, and (3) total borrowing is capped by a debt ceiling. Assets in Isolation Mode on Aave V3 Arbitrum include ARB ($14M ceiling) and LINK ($10M ceiling).

In a lending loop, the maximum leverage achievable with a given LTV is: max_leverage = 1 / (1 − LTV). At 80% LTV: max 5×. At 90% LTV: max 10×. Each loop adds collateral and debt, increasing both exposure and risk proportionally.

When a borrower's health factor drops to 1.0, third-party liquidators can repay a portion of the debt and seize the equivalent collateral plus a bonus (e.g., 5–15% depending on the asset). On Aave V3, up to 50% of the debt can be repaid in a single liquidation call (the "close factor").

The collateralization ratio at which a position becomes eligible for liquidation. Always higher than LTV. Example: WBTC on Aave V3 Arbitrum has LTV = 70% and LT = 75% — you can borrow up to 70% of your WBTC value, but liquidation triggers only at 75%. The gap between LTV and LT is your safety buffer.

A strategy where you deposit collateral, borrow against it, swap the borrowed asset back to the collateral, deposit again, and repeat. After N loops with LTV l: total_exposure = initial × (1 − l^(N+1)) / (1 − l). The liquidation buffer is determined by the LTV/LT gap — not by the number of loops.

Also called the liquidation bonus — the discount at which a liquidator buys collateral when repaying a borrower's debt. On Aave V3 Arbitrum, WBTC has a 10% liquidation bonus: a liquidator repays $100 of debt and receives $110 worth of WBTC.

The price at which a collateral asset triggers liquidation (HF = 1.0). Formula: liq_price = debt / (collateral_amount × LT). Example: 1 WBTC ($100,000) with LT 75% and $60,000 USDT debt → liq_price = $60,000 / (1 × 0.75) = $80,000.

Morpho Blue's equivalent of Aave's Liquidation Threshold, expressed as the ratio of debt to collateral value at which liquidation is triggered. Unlike Aave (which uses two parameters: LTV for borrowing cap and LT for liquidation), Morpho uses a single LLTV parameter. Example: sdeUSD/USDC market LLTV = 91.5% means liquidation triggers when debt ≥ 91.5% of collateral value.

An entity that deposits assets into an AMM pool to enable trading. LPs earn a fraction of every swap fee (e.g., 0.05–1% per trade) proportional to their share of the pool. In exchange, they accept impermanent loss and smart contract risk. V3 LPs additionally manage range selection — going "out of range" stops fee accrual.

A token representing restaked ETH (ETH delegated to EigenLayer AVSes or similar restaking protocols). LRTs (weETH from ether.fi, ezETH from Renzo, rsETH from KelpDAO) earn both native ETH staking yield (~3.5%) and restaking yield from AVS services. Risk: LRTs add smart contract risk and liquidity risk — in a crisis, redemption queues can delay exit by days to weeks.

A token representing staked ETH (or other PoS asset) that can be used in DeFi while still earning staking yield. Examples: stETH (Lido), rETH (Rocket Pool), cbETH (Coinbase), wstETH (wrapped stETH). LSTs trade at a premium to ETH proportional to accumulated yield. They are accepted as collateral on Aave V3 in E-Mode, where high LTV is available due to their price correlation with ETH.

The maximum fraction of collateral value that can be borrowed. Set per asset by Aave governance. Lower LTV = safer for the protocol, less efficient for the borrower. Volatile assets have lower LTV (e.g., WBTC 70%, ETH 80%) while stablecoins can reach 90%.

The reference price used by a perpetual DEX to calculate unrealized P&L and trigger liquidations — as opposed to the last trade price (index price). GMX V2 uses an aggregate of CEX prices (via Chainlink + fallback oracles) as the mark price, preventing manipulation via a single low-liquidity trade from triggering liquidations.

Profit extracted by validators or block builders by reordering, inserting, or censoring transactions within a block. Types: arbitrage (MEV-neutral), sandwich attacks (MEV against traders), liquidations (MEV-neutral). On Ethereum, MEV-Boost lets validators earn from MEV auctions. On Arbitrum, the sequencer is centralized, reducing but not eliminating MEV risk.

Morpho's curated vault layer built on top of Morpho Blue. A MetaMorpho vault (e.g., "Steakhouse USDC", "MEV Capital ETH") aggregates deposits and allocates them across multiple Morpho Blue markets according to a curator's strategy. Users deposit once and get diversified exposure — the curator handles market selection, supply cap management, and rebalancing.

A minimal, immutable lending protocol where each market is defined by a single pair: (collateral asset, loan asset, oracle, LLTV, IRM). No governance can change market parameters after deployment. Unlike Aave (which pools all collateral), each Morpho Blue market is isolated — risk doesn't propagate across markets.

The minimum collateral required to keep a leveraged position open. On GMX V2, it's 1% of position size. When collateral − fees falls below this level, the position is liquidated. It acts as the protocol's safety buffer, ensuring the trader covers the closing costs even in fast-moving markets.

The total USD value of all open positions in a perpetual market. In GMX V2, open interest is split between longs and short OI. Imbalance between long and short OI determines the funding rate direction — the larger side pays the smaller side.

Information read directly from smart contract state, not from an API or database. OrnyTools fetches health factors from the Aave V3 contract, V3 pool states from Uniswap V3 contracts, and prices from Chainlink feeds — all via public RPC nodes, without any wallet connection. The data is as fresh as the latest block.

A smart contract that feeds real-world prices (USD prices for crypto assets) into the blockchain. Aave V3 uses Chainlink oracles — aggregated from multiple data sources with deviation thresholds and heartbeat checks. Your collateral value in the health factor calculation uses the oracle price, not the DEX spot price.

The practice of accumulating off-chain points distributed by a protocol to DeFi participants, with the expectation of future token airdrop conversion. Popularized by Ethena (ENA points → airdrop), EigenLayer (EIGEN airdrop to restakers), and many others in 2023–2025. Points farming typically requires locking capital for extended periods with uncertain rewards.

The total liquidity available in a trading pair, which directly determines price impact. A pool with $10M TVL has 10× less price impact per dollar traded than a $1M TVL pool. In V3, effective depth depends on how much liquidity is concentrated near the current price.

Post-EIP-1559, the tip paid directly to the validator (miner) for including a transaction. Formula: total_fee = (base_fee + priority_fee) × gas_used. The base fee is burned; the priority fee goes to the validator. During congestion, priority fees spike as users compete for inclusion. On Arbitrum, priority fees are minimal since the sequencer processes transactions in FIFO order.

The probability of losing funds due to a bug, exploit, or design flaw in a smart contract. Mitigated by: multiple audits, bug bounties, formal verification, time-locked upgrades, and proof of time in production. Protocols with >$1B TVL and 3+ years on mainnet (Aave, Curve, Uniswap) have the lowest protocol risk.

A derivative contract with no expiry date that tracks the price of an underlying asset. On-chain perps (GMX, dYdX, Hyperliquid) allow leverage trading directly from a wallet without a CEX. GMX V2 uses a GLP/GM liquidity pool model where liquidity providers are the counterparty to traders.

The change in execution price caused by a trade moving the AMM curve. In a constant-product pool, price impact for a trade of size A in a pool of depth R is: A/(R+A). A $10,000 trade in a $1M pool moves price by ~1%.

Yield generated from actual protocol revenue (trading fees, borrow interest, liquidation fees) rather than from token emission inflation. A protocol paying 20% APY through native revenue vs. one inflating its token supply to pay 20% APY are fundamentally different — the latter is distributing future dilution as current yield. GMX's GLP model is often cited as a "real yield" example.

A token whose balance in your wallet changes automatically, without any transaction on your part. Two types: positive rebase (balance grows — stETH, USDM) to distribute yield; negative rebase (balance shrinks). Rebase tokens can cause issues with DeFi protocols that expect fixed balances — which is why wstETH (wrapper, non-rebasing) exists alongside stETH.

The liquid staking token from Rocket Pool, a decentralized ETH staking protocol. Unlike stETH (which rebases), rETH is non-rebasing — its price vs ETH increases over time as staking rewards accumulate. Rocket Pool uses a network of permissionless node operators. Accepted as Aave V3 collateral in E-Mode with 93% LTV.

A tokenized representation of an off-chain asset — US Treasury bills (BUIDL, USDM, USDY), real estate, corporate bonds, or commodities. RWA protocols bridge traditional finance yield into DeFi. Key risks: custodian failure, regulatory seizure, and smart contract bugs.

The price interval [Pa, Pb] within which a V3 liquidity position is active. When the pool price is inside the range, the LP earns fees proportional to their share of in-range liquidity. When price moves outside, the position becomes 100% of one token and earns nothing until price re-enters. Choosing the right range is the core trade-off in V3 LP strategy.

The act of closing and reopening a V3 position after it goes out of range, or adjusting the range to re-center on the current price. Each rebalance incurs gas costs, swap fees, and slippage. Frequent rebalancing on a narrow range can erase fee income. Active management strategies automate this with contracts like Arrakis or Gamma.

A MEV attack where a bot front-runs a pending DEX trade (buys the token first, driving the price up) and then back-runs it (immediately sells after the victim's trade completes). The victim pays extra slippage; the attacker pockets the difference. Defense: use slippage tolerance of ≤0.5%, avoid mempool exposure, or use aggregators that split routes.

The probability of losing funds due to a bug, exploit, or unintended behavior in a protocol's code. Cannot be fully eliminated — even heavily audited protocols (Euler Finance: $197M hack 2023, Curve: $47M hack 2023) get exploited. Managed through multiple audits, bug bounties, time-locks, limited TVL exposure per protocol, and insurance.

In Aave, the Safety Module holds staked AAVE tokens as a surplus buffer — a last resort if the protocol incurs bad debt that can't be covered by reserves. Staked AAVE earns yield but can be slashed up to 30% in a "shortfall event."

The difference between the expected price and the executed price of a trade. In AMMs, it's driven by price impact. In order books, it comes from thin liquidity at specific levels. Slippage tolerance (e.g., 0.5%) set in your wallet prevents execution if the price moves more than that between submission and confirmation.

A token designed to maintain a fixed peg, usually to USD. Main types: fiat-backed (USDC, USDT — backed by dollars in a bank), crypto-overcollateralized (DAI, LUSD — backed by ETH/BTC with excess collateral), algorithmic (historically high failure rate). The Stablecoin Analyzer monitors depeg risk across 30+ assets.

An average price computed over a time window, giving equal weight to each time unit. Formula: TWAP = Σ(price_t × Δt) / total_time. Uniswap V3 stores cumulative price data on-chain, allowing anyone to compute a trustless TWAP over any interval. Used as a manipulation-resistant oracle alternative.

The total USD value of assets deposited in a protocol or pool. In an AMM pool, TVL = 2 × value of one side (since pools hold equal-value amounts of both tokens). Higher TVL means deeper liquidity and lower price impact per dollar traded. TVL data comes from DeFiLlama and GeckoTerminal in OrnyTools.

A discrete price level in Uniswap V3's concentrated liquidity system. The price space is divided into 1 basis-point increments (ticks). Liquidity providers select a lower and upper tick to define their range. Fees are earned only when the current price (currentTick) is between the position's ticks.

The real asset that a derivative, wrapped token, or vault represents. For aUSDC (Aave's supply token), the underlying is USDC. For wstETH, the underlying is stETH → ETH. Understanding the underlying is critical for risk analysis — a yield-bearing wrapper inherits all risks of its underlying asset plus its own smart contract risk.

The fraction of supplied assets that are currently borrowed: utilization = total_borrows / total_supply. Aave uses a kinked interest rate model — below the optimal utilization (typically 80–90%), rates rise gently; above it, rates spike sharply to incentivize repayments and more supply.

A smart contract that holds assets and executes a strategy on behalf of depositors. Varieties: yield vaults (auto-compound farming rewards — Yearn, Beefy), lending vaults (MetaMorpho, Aave aTokens), LP vaults (Arrakis manages V3 ranges). Vaults abstract complexity — users deposit one asset and receive a share token. ERC-4626 standardizes vault interfaces.

A governance token model where holders lock tokens for up to 4 years to receive voting power (veCRV, veBAL, vlCVX). Longer lock = more power. Benefits: fee share (veCRV holders receive 50% of Curve trading fees), governance voting (gauge weights), and bribe income. Trade-off: tokens are locked and non-transferable for the duration.

Average price weighted by trading volume: VWAP = Σ(price_i × volume_i) / Σ(volume_i). Used by institutional traders to benchmark execution quality — buying below VWAP is considered efficient. In DeFi, VWAP is less standard than TWAP because on-chain volume data is harder to aggregate, but CEX VWAP is used as reference for GMX mark prices.

The non-rebasing wrapped version of eETH, ether.fi's liquid restaking token (LRT). Holds ETH + EigenLayer restaking position. weETH price vs ETH increases as restaking rewards accumulate. Used as collateral on Aave V3 and Morpho Blue. Risk profile: ETH staking risk + EigenLayer AVS slashing risk + ether.fi smart contract risk.

The non-rebasing wrapper of stETH (Lido's liquid staking token). Unlike stETH (whose balance grows daily), wstETH has a constant balance — its price vs ETH increases as staking yield accrues. 1 wstETH ≈ 1.19 ETH (grows over time). Used in Aave V3 E-Mode (93% LTV), as collateral in Morpho Blue, and in Pendle yield markets. Preferred over stETH in DeFi due to non-rebasing compatibility.

An address holding a disproportionately large amount of a token or protocol position. A whale withdrawing from a lending protocol can spike utilization instantly (pushing borrow rates up), or a whale entering a V3 range can dilute existing LPs' fee share significantly. Monitoring whale movements is an important part of DeFi risk management.

A token pegged 1:1 to another asset, issued by a smart contract. Purpose: bridge an asset to a different chain or standard (WBTC = ERC-20 BTC on Ethereum), change its behavior (wstETH = non-rebasing stETH), or enable DeFi compatibility (WETH = ERC-20 ETH). Always carries the risk of the bridge/custodian holding the underlying (WBTC: BitGo custody, centralization risk).