An external adapter is a tool that connects a blockchain network to external data sources or APIs. This allows smart contracts and decentralized applications (dApps) to access off-chain data, enriching their functionalities and making them more versatile.For instance, a weather oracle can provide real-time weather information needed for a smart contract that triggers a payment based on these conditions. By using an external adapter, the smart contract can receive and process data outside the blockchain, which is crucial for applications like insurance, finance, and supply chain management.External adapters often work in conjunction with oracles, which serve as intermediaries between the blockchain and the data source. These adapters can transform and format data as needed, ensuring that it is compatible with blockchain requirements. Ultimately, they enhance the ability of projects to interact with the real world, making them more useful and effective in practical situations.