I built a DeFi lending rate aggregator that reads directly from on-chain state — no APIs, no estimates

The article introduces RateScope, a DeFi lending rate aggregator that provides real-time, on-chain data for protocols like marginfi and Kamino on Solana. It normalizes compounding models (per-second vs. per-slot) to offer comparable APYs and supports USDC/USDT pools. The creator seeks feedback to improve accuracy and expand protocol/chains/token coverage.