It's very easy to extract the system prompt from Claude Code: you can patch it to intercept HTTP calls it makes. I wrote about one tool for doing that here: ht

It's very easy to extract the system prompt from Claude Code: you can patch it to intercept HTTP calls it makes. I wrote about one tool for doing that here: https://simonwillison.net/2025/Jun/2/claude-trace/ https://simonwillison.net/2025/Jun/2/claude-trace/