Follow-up: Claude Code's source confirms the system prompt problem and shows Anthropic's different Claude Code internal prompting
Code leak reveals Claude Code's hard-coded system prompts are causing performance degradation — includes workaround using ANTHROPIC_BASE_URL and analysis of why prompt-file flags don't fully override.
Deep technical analysis of Claude Code's system prompts based on leaked source code. Provides actionable insight into tool behavior and workarounds with specific technical details.