A sample instruction file CLAUDE.md is available at https://www.dzombak.com/blog/2025/08/getting-good-results-from-claude-code/ However, there is a discussion about the effectiveness of this file for providing context: some consider it useful for AI's long-term memory, while others argue that the AI often ignores its content. From the HN Discussion, further conclusions can be drawn: The best results are achieved when the developer spends significant time creating very clear, step-by-step spec...