Streaming data in APIs allows for real-time communication and the transmission of data in chunks, improving efficiency and responsiveness, especially in applications dealing with large volumes of data or requiring instant updates. This concept is already prevalent in handling media in browsers and is now being integrated into APIs using JSON, despite JSON's inherent limitations for streaming. Various formats like JSON Lines (JSONL), Newline Delimited JSON (NDJSON), and JSON Text Sequences are utilized to make JSON streamable, while OpenAPI v3.2 introduces new keywords, itemSchema and itemEncoding, to define the structure and encoding of streamed data. These innovations simplify the description of data streams and events, such as server-sent events (SSE), enabling the API to transmit continuous data streams effectively. The development of these streaming formats and the enhancements in OpenAPI aim to meet the growing demands in data science, big data, and AI, allowing for more dynamic and real-time data handling in modern applications.