Aave

What is Aave?

Aave is a decentralized, non-custodial liquidity protocol where users can participate as depositors (lenders) or borrowers. Founded in 2017 (originally as ETHLend), Aave has grown to become the largest DeFi lending protocol with over $10B in total value locked.

The name "Aave" comes from the Finnish word for "ghost," reflecting the protocol's goal of creating transparent, open financial infrastructure.

Key Statistics

• Total Value Locked: $10B+ across all deployments
• Supported Assets: 30+ tokens per network
• Networks: Ethereum, Polygon, Arbitrum, Optimism, Avalanche, Base
• Flash Loan Volume: $50B+ all-time
• Security Audits: 15+ audits from top firms

How Aave Works

Supplying Assets (Earning Interest)

When you supply assets to Aave, you receive aTokens (e.g., aUSDC for supplying USDC). These tokens:

• Represent your deposit plus accrued interest
• Automatically grow in your wallet as interest accrues
• Can be redeemed 1:1 for the underlying asset
• Are transferable and usable in other DeFi protocols

Borrowing Assets

To borrow, you must first supply collateral. Key concepts:

• Loan-to-Value (LTV): Maximum you can borrow vs collateral (e.g., 80% for ETH)
• Liquidation Threshold: Point at which your position gets liquidated
• Health Factor: Above 1 = safe; below 1 = liquidation risk

Step-by-Step: How to Use Aave

Supplying (Earning Yield)

1. Visit app.aave.com and connect your wallet
2. Select your network (Ethereum, Arbitrum, etc.)
3. Click "Supply" on your chosen asset
4. Enter amount and approve the transaction
5. Confirm supply. You'll receive aTokens
6. Interest accrues automatically in real-time

Borrowing

1. First supply collateral (see above)
2. Click "Borrow" on the asset you want
3. Choose variable or stable rate
4. Enter amount (stay under max to avoid liquidation)
5. Confirm the transaction
6. Monitor your Health Factor regularly

Comparing rates across Aave's seven networks can be time-consuming. Fensory aggregates these rates in one dashboard, helping you find the best yields without switching between chains manually.

Aave Fees Explained

Current Supply APYs (Example)

Aave Safety & Security

• 15+ Security Audits: Trail of Bits, OpenZeppelin, SigmaPrime
• Bug Bounty: $250,000+ for critical vulnerabilities
• Governance: AAVE token holders vote on protocol changes
• Safety Module: AAVE stakers backstop protocol risks
• No Admin Keys: Fully decentralized, no team control

Aave vs Competitors

Frequently Asked Questions

Aave is one of the most battle-tested protocols in DeFi with extensive audits and a strong track record. However, smart contract risk always exists. Never deposit more than you can afford to lose.

If your Health Factor drops below 1, liquidators can repay part of your debt and claim your collateral at a discount. You keep the borrowed assets but lose collateral.

For small amounts, use Arbitrum or Optimism for lower gas fees. For large amounts or maximum security, Ethereum mainnet is preferred.

Supply-side risk is limited to smart contract failure. You won't lose money from market movements. Your aTokens always equal your deposit plus interest. However, if the protocol were hacked, supplied assets could be at risk.

Monitor rates across chains, consider stablecoin pools for lower volatility, and use Layer 2s to minimize gas costs. Fensory simplifies this by showing you optimal opportunities across all of Aave's deployments.

Risks and Considerations

• Smart Contract Risk: Despite extensive audits, no protocol is immune to bugs or exploits
• Liquidation Risk: Borrowers can lose collateral if prices move against them
• Oracle Risk: Aave relies on Chainlink for price feeds. Oracle failures could cause issues
• Regulatory Uncertainty: DeFi lending faces evolving regulatory scrutiny
• Market Risk: In extreme volatility, withdrawal delays may occur if utilization is very high

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