Lending protocol UI showing collateral and borrowed amount

Lending protocol DeFi interface displaying collateral and borrowed amount, focusing on clarity and transparency of operations.

About this subject

Decentralized lending protocols, such as Aave and Compound, have revolutionized access to credit by allowing users to borrow using crypto assets as collateral. The interface shown highlights two essential components: the deposited collateral (usually assets like ETH or USDC) and the borrowed amount, which depends on the loan-to-value (LTV) ratio. For example, on Aave, a user can deposit ETH and borrow up to 75% of its value in stablecoins, as long as the position is not liquidated. Liquidation occurs when the collateral value falls below a threshold, allowing third parties to purchase the asset at a discount. This mechanism incentivizes maintaining healthy positions and ensures protocol solvency.

Beyond LTV, the interface displays indicators such as interest rate (variable or stable) and position health (health factor). The health factor is calculated as the collateral value divided by the borrowed amount, considering each asset's risk weight. A health factor below 1 triggers liquidation. Modern protocols also offer flash loans, instant loans that must be repaid within the same transaction, used for arbitrage and refinancing. Transparency in displaying these data is crucial for users to make informed decisions.

The DeFi ecosystem moves billions of dollars in total value locked (TVL), with major lending protocols representing a significant share. In 2023, Aave held about US$5 billion in TVL, while Compound had US$2 billion. The interface shown reflects the design trend focused on usability, with charts and numerical indicators that facilitate real-time monitoring. Adoption of these protocols grows with integration into wallets like MetaMask and Ledger, allowing direct access from browsers or mobile devices.

Frequently Asked Questions

What does health factor mean in a lending protocol?

The health factor is an indicator of the user's position health, calculated as (collateral value * liquidation threshold) / borrowed amount. If it falls below 1, the position may be liquidated.

How do flash loans work?

Flash loans are instant loans that require no collateral but must be repaid within the same transaction. They are used for arbitrage, collateral swaps, or liquidating positions without upfront capital.

What is the difference between variable and stable interest rates in protocols like Aave?

The variable rate fluctuates based on supply and demand in the liquidity pool, while the stable rate is fixed for a period but may be adjusted by the protocol to maintain market balance.