I read Claude Code's 80K lines of TypeScript source with 4 parallel subagents and extracted 15 design intents. This 14-chapter ebook turns those intents into practical strategies — prompts, memory, sessions, cost-cutting. Includes CLAUDE.md templates, MCP setup guide, and a "first 30 minutes" workflow. First 4 chapters free. Full ebook $9+.
Hey PH! 👋
I built this because I was spending $15-20/day on Claude Code and getting mediocre results. So I decided to read the
source.
80,000 lines of TypeScript later, I found 15 design decisions that explain why Claude Code behaves the way it does:
- The entire turn is a single AsyncGenerator. That's why Ctrl+C preserves your work.
- CLAUDE.md is the cache prefix. Change it and your next 10 calls pay full price.
- Subagents can't write to main state — it's protecting your context by design.
Once I understood the architecture, my usage changed completely. Same tool, way better results.
First 4 chapters are free. Would love feedback from other Claude Code users — what surprised you most?
