Application programming interfaces (APIs) have been suggested as a solution to the problem of smart contracts not being able to access reliable data.API3's stated purpose is to make it possible to build, maintain, and monetize decentralized APIs at large sizes. The team behind this initiative claims that it has never been more necessary for smart contracts to offer "timely, trustworthy real-world data" as blockchain technology becomes more widely used in the economy �X from decentralized banking to supply chain management. We often hear about projects in the area of blockchain and cryptocurrency that try to introduce this technology to well-established sectors like real estate and finance. One of API3's most appealing features is how it aims to address some of the issues that have arisen within the blockchain community.