anthropics/anthropic-cookbook ? reverse-engineered prompt

Build me a Claude cookbook project that shows practical examples of how to use Claude in real apps.

I want a clean repo of Jupyter notebooks and short guides that people can copy into their own projects. Include examples for things like text classification, summarization, retrieval with external knowledge, tool use, vision, PDF and web page parsing, JSON output, prompt caching, moderation, evaluations, cost and latency optimization, and a few advanced agent examples.

Make it easy for someone with a Claude API key to get started, with a simple setup section and clear notebook names. The examples should be beginner friendly but still useful for experienced developers. If you need to check the latest Claude API docs while building it, go ahead and look them up online. Keep the code practical, well organized, and ready to run.