API

An API exposes a defined set of endpoints that enable external systems to interact with the project's data and services. It specifies request and response formats, authentication methods, and error handling to ensure reliable communication. RESTful or GraphQL patterns commonly provide resource-oriented access, while versioning and thorough documentation ensure backward compatibility and discoverability. Security, rate limiting, input validation, and consistent serialization are essential for stability and trust. SDKs, webhooks, and monitoring tooling help integrate, extend, and observe API usage across environments.