Book summarizer

Use this skill when the user wants a long-form book summarized in the user's preferred language at an explicitly verified 20 percent compression ratio, with...

Use this skill for requests like:

• "Summarize this book at a 20% compression ratio"
• "Generate a substantial summary and verify the ratio"
• "Produce the summary in batches and validate the final total"

Rules

• Default target ratio: 0.20
• Default tolerance: 0.02
• Accept only summaries between 18% and 22% of the original word count
• Output must be in user's language of choice (e.g., pt-BR)
• If the ratio is outside the allowed range, do not import the summary
• In chat-only mode, if the source is very large, generate the summary in multiple batches and merge them before validation
• All packaged helper scripts live in scripts/ inside this skill folder

Workflow

1. Start from a local plain-text book file or a downloaded Project Gutenberg text.
2. Count the source words with python scripts/book_tools.py count <original_file>.
3. Compute the target summary length with python scripts/book_tools.py target <original_file> --ratio 0.20.
4. If the source is too large for one reply, split it with python scripts/split_book.py <original_file> 3000.
5. Draft summary batches in order, preserving chronology and section fidelity.
6. Merge the batches with python scripts/book_tools.py aggregate <summary_file> <batch_files...>.
7. Validate the final ratio with python scripts/verify_summary_ratio.py <original_file> <summary_file>.

Key Files

• scripts/book_tools.py
• scripts/split_book.py
• scripts/verify_summary_ratio.py
• SKILL.md

Notes

• The packaged scripts use only the Python standard library.
• Run the commands from the skill folder, or use explicit paths if you call them from elsewhere.
• For very large books, prefer the automated pipeline over single-turn chat drafting.
• In chat-only mode, books above roughly 80k words should be summarized over multiple turns; do not pretend a single short draft satisfies the 20% rule.