When an API client makes an HTTP request with an Accept header containing the value "application/json", the API server should respond with a payload formatted as JSON. Here's a detailed explanation: * Accept Header: * Purpose: The Accept header indicates the media type(s) that the client is willing to receive from the server. * Value "application/json": Specifies that the client expects a response in JSON format. * Valid JSON Response: * Format: JSON (JavaScript Object Notation) is a lightweight data interchange format that uses key-value pairs. * Example: A valid JSON response for the requested format would be{"status": "healthy"}. * Key: "status" * Value: "healthy" References * JSON Standard: JSON.org * HTTP Headers:MDN HTTP Headers