Generate a detailed blueprint for a high-performance, secure, and scalable RESTful API, covering endpoints, request/response structures, and error handling.
Task: generate a summary of a video. Input: [video title], [video transcript], [length of summary: e.g., 100 words, 200 words] Instruction: summarize the video transcript, focusing on the main topics and key takeaways. The summary should be concise and informative, providing a clear overview of the video's content. Adhere to the specified length constraint.
Generate a basic definition for a single REST API endpoint, including method, path, and expected parameters.
Outline essential secure API design principles and comprehensive testing strategies to ensure robust security for your application programming interfaces.