Ethereum Beacon APIs offer a robust collection of RESTful interfaces provided by Ethereum Beacon nodes, specifically designed to align with the consensus layer specifications of Ethereum. These APIs enable interaction with the beacon node, which maintains the state of the beacon chain by communicating across the Ethereum network. The API’s architecture utilizes HTTP for access, and returns data exclusively in JSON format, necessitating additional security layers to prevent public internet exposure and potential denial-of-service attacks. It facilitates interoperability among different beacon node implementations, while keeping validator operations conceptually distinct. These validator operations include tasks like beacon block production and attestation signing. The project emphasizes modular usage by providing detailed API specifications accessible locally through a simple HTTP server setup. Contributions are streamlined through lint checks and orderly release processes, supporting both stable and pre-release versions for ongoing development and testing.