Create API Documentation

Create complete API documentation for the following code: ``` [[SELECTED_TEXT]] ``` Format: - **Overview** – purpose of the API - **Authentication** – if relevant - **Endpoints / Methods** – each with: description, parameters (name, type, required, default), return values, status codes - **Error handling** – all possible error codes - **Examples** – curl / code snippets for each endpoint - **Changelog** – versioningCopy