book-mirror

Create a chapter-by-chapter two-column analysis of EPUB or PDF books.

Updated Apr 23, 2026
One-click install
npx skills add https://github.com/ngochuy13/intern-dev --skill book-mirror-ngochuy13
Or copy as Structured Prompt for Agent
Please help me install this Agent Skill.
Skill: book-mirror
Source: https://github.com/ngochuy13/intern-dev/tree/main/skills/book-mirror
Command: npx skills add https://github.com/ngochuy13/intern-dev --skill book-mirror-ngochuy13

SYSTEM DOCUMENTATION & REQUIREMENTS

What problem does it solve?

book-mirror helps you convert an entire EPUB/PDF into a detailed, chapter-by-chapter analysis that reflects your real patterns and life context instead of giving a generic summary.

Core Features & Use Cases

  • Two-column personalized chapter analysis: preserves the book content on the left while mapping every key idea to your actual life on the right.
  • Reader context grounding: uses your stored memory and relevant brain pages (e.g., reflections, themes, entity lookups) to write the mirrored column as if a therapist is annotating your margin notes.
  • Single deliverable brain page (plus optional PDF): writes to media/books/<slug>-personalized.md and can render it to PDF for delivery.

Quick Start

Run gbrain book-mirror with your extracted chapters and brain context file to generate a personalized brain page for your book.

Frequently Asked Questions about book-mirror

High-intent search queries and answers about installing and using this skill.

FAQPage Schema
How do I create a personalized book analysis from an EPUB or PDF?

To create a personalized book analysis, provide your extracted EPUB or PDF chapters alongside a context pack of your stored brain pages. The system then generates a chapter-by-chapter two-column markdown file mapping book ideas to your real life context.

What is two-column chapter summarization and how does it work?

Two-column chapter summarization preserves original book content on the left while mapping every key idea to your actual life context on the right. It uses your stored memory and brain pages to write mirrored columns like a therapist annotating your margin notes.

Can I use my own memory context to ground a book summary in my personal life?

Yes, you can ground a book summary in your personal life by supplying a dense context pack built from your brain pages. The system uses these reflections and themes to deliver deep, therapist-like relevance rather than a generic book summary.

What's the best way to convert a full book into a personalized markdown file?

The best way to convert a full book into a personalized markdown file is running an orchestrated read-only subagent analysis on your extracted chapters. This generates a single final deliverable written to media/books/<slug>-personalized.md.

Does personalized book analysis work for specific themes like psychology or business?

Personalized book analysis works across common themes like relationships, psychology, business, or personal growth. It applies the same context-grounding mechanism to map ideas from any of these genres directly to your real life patterns.

What are the limitations of automated chapter text extraction for personalized analysis?

Automated chapter text extraction requires you to supply clean, readable text from your EPUB or PDF beforehand. The system relies entirely on this extracted input and your provided brain context file to generate the mirrored two-column analysis.