DeFiStar.io is a real-time dashboard that tracks the best stablecoin yields across multiple DeFi protocols (Aave V3, Compound V3, Spark, Maker DSR, Morpho) on various blockchains including Ethereum, Arbitrum, Base, Polygon, Optimism, and BNB Chain. We aggregate data directly from smart contracts to show you where to earn the highest returns on your stablecoins.

APY (Annual Percentage Yield) is calculated by reading on-chain data from smart contracts including supply rates, borrow rates, and utilisation rates. We use the compound interest formula: (1 + r/n)^n - 1, where r is the nominal rate and n is the compounding frequency. Our data refreshes every 60 minutes to ensure accuracy.

DeFi lending carries several risks: (1) Smart contract vulnerabilities - bugs in code can be exploited, (2) Protocol exploits - hackers may find attack vectors, (3) Stablecoin de-pegging - your "stable" asset could lose its $1 peg, (4) Regulatory changes - governments may restrict DeFi activities, (5) Market volatility - yields can drop to 0% without warning, (6) Liquidity issues - you may not be able to withdraw funds instantly if utilisation is at 100%. Always invest only what you can afford to lose completely.

We currently track lending protocols including Aave V3, Compound V3, Spark, Maker DSR, and Morpho across Ethereum, Arbitrum, Base, Polygon, Optimism, and BNB Chain. We focus on lending protocols (not AMM pools like Curve) because they offer clearer risk profiles, more predictable yields, and no impermanent loss risk. Each protocol has been audited multiple times and has proven track records, though past security doesn't guarantee future safety.

Morpho is a next-generation lending protocol that we track alongside traditional ones like Aave. While standard protocols use a single shared pool for all assets (spreading risk), Morpho uses isolated markets or "Vaults." This isolates risk—bad debt in one specific market won't drain the entire protocol. Because of this efficiency, Morpho vaults often offer higher yields than traditional pools while still avoiding the impermanent loss risks associated with AMMs.

APY rates change based on supply and demand dynamics. When more people want to borrow (high demand) and there's less liquidity available (low supply), rates increase to incentivize more lenders. Conversely, when there's abundant liquidity and fewer borrowers, rates decrease. External factors like market conditions, protocol incentives, and competing opportunities also influence yields. This is why our dashboard updates every 60 minutes - to help you spot the best opportunities as they emerge.

TVL (Total Value Locked) is the total amount of capital deposited in a lending pool. Higher TVL generally indicates: (1) More trust from the community, (2) Better liquidity for withdrawals, (3) More battle-tested smart contracts, (4) Lower slippage risk. However, extremely high TVL can sometimes correlate with lower APY due to oversupply. We require minimum $100K TVL for pools to appear on our dashboard to ensure reasonable liquidity.

Utilisation Rate shows what percentage of supplied funds are currently being borrowed. For example, 80% utilisation means 80% of deposited stablecoins are loaned out to borrowers. Higher utilisation typically means higher yields but potentially lower liquidity for immediate withdrawals. Most protocols use algorithmic interest rate models where rates increase as utilisation approaches 100% to incentivize more supply.

The safety scoring system is a proprietary ledgers-and-weights style risk engine that evaluates the safety of a DeFi yield opportunity by combining a base risk score (from the stablecoin, protocol, and chain) with a structured set of penalties, bonuses, and risk amplifiers that adjust the score based on real market conditions. It penalises low liquidity, extreme utilisation (too high or too low), unusually high APYs, APY utilisation mismatches, and small pools on riskier chains, while rewarding healthy utilisation, stable mid-range APYs, and large TVLs. Additional multiplier effects increase penalties for lower-quality assets or depeg-risk stablecoins, but a capped penalty system ensures scores remain stable and cannot collapse unfairly. The result is a balanced, explainable model that favors deep, healthy, well-utilised markets while appropriately discounting fragile, illiquid, or anomalous ones.

Current APY shows the instantaneous yield rate at the time of data pull, while Avg APY represents the average yield over all data points to account for short-term fluctuations and provide a more stable view of performance.

Pools must have a minimum TVL of $100,000 and minimum APY of ~1% to ensure liquidity and viability, focusing on multi-chain ecosystems with reliable data.

The current highest average APR (historical average APY) for USDC on Arbitrum is 3.30%. This is based on our filtered data (min TVL $100K, min APY ~1%) from qualifying lending pools. Rates fluctuate; check the dashboard for the latest and DYOR.

The current highest average APY (historical average) for USDC on Ethereum is 3.77%. This is based on our filtered data (min TVL $100K, min APY ~1%) from qualifying lending pools. Rates fluctuate; check the dashboard for the latest and DYOR.

The current highest average APY (historical average) for USDT on Ethereum is 3.55%. This is based on our filtered data (min TVL $100K, min APY ~1%) from qualifying lending pools. Rates fluctuate; check the dashboard for the latest and DYOR.

The current highest average APY (historical average) for DAI on Ethereum is 5.78%. This is based on our filtered data (min TVL $100K, min APY ~1%) from qualifying lending pools. Rates fluctuate; check the dashboard for the latest and DYOR.

The current highest average APY (historical average) for USDC on Base is 3.65%. This is based on our filtered data (min TVL $100K, min APY ~1%) from qualifying lending pools. Rates fluctuate; check the dashboard for the latest and DYOR.

The current highest average APY (historical average) for USDC on Optimism is 3.65%. This is based on our filtered data (min TVL $100K, min APY ~1%) from qualifying lending pools. Rates fluctuate; check the dashboard for the latest and DYOR.

The current highest average APY (historical average) for USDT on Optimism is 3.16%. This is based on our filtered data (min TVL $100K, min APY ~1%) from qualifying lending pools. Rates fluctuate; check the dashboard for the latest and DYOR.

The current highest average APY (historical average) for USDC on Polygon is 2.95%. This is based on our filtered data (min TVL $100K, min APY ~1%) from qualifying lending pools. Rates fluctuate; check the dashboard for the latest and DYOR.