DeFi, Smart Contracts, and Blockchain APIs
DeFi, Smart Contracts, and Blockchain APIs DeFi uses smart contracts on public blockchains to automate financial services such as lending, swaps, and stablecoins. Developers interact with these services through blockchain APIs and data feeds that connect on‑chain activity with off‑chain tools. This article explains how DeFi, smart contracts, and API access fit together, and how to build apps that are safe, fast, and reliable. How DeFi works with smart contracts At its core, a smart contract stores rules and funds, and runs when users or other contracts call its functions. Transactions are recorded on chain, and consensus guarantees they happen as written. DeFi apps combine multiple contracts, oracles for price data, and liquidity pools to offer loans, trades, and yield. ...