Here's a larger example where I had Claude build me a full Django application: https://simonwillison.net/2024/Aug/8/django-http-debug/

I have a bunch more larger projects on my blog: https://simonwillison.net/tags/ai-assisted-programming/

I do a whole lot of API integration work with Claude, generally by pasting in curl examples to illustrate the API. Here's an example from this morning: https://til.simonwillison.net/llms/prompt-gemini