API3 is a DAO that develops web3 oracle solutions. The startup’s first-party data feeds, Beacons, provide smart contract developers with reputable, open-source, real-world data like stock and commodity prices. API3 also offers a middleware, Airnode, that connects smart contracts with custom application programming interfaces (APIs). Since verifying off-chain data is the weakest security link in web3, the startup’s solution allows blockchain application developers to tackle this issue. Consequently, it improves data security and transparency while eliminating third-party middlemen and fees.