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...
name: book-summarizer
description: 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 the result rejected if it falls outside the allowed range. Warning: this skill may consume many tokens because it can run multiple times until it reaches the requested compression rate.
Book Summarizer
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 .
3. Compute the target summary length with python scripts/book_tools.py target --ratio 0.20.
4. If the source is too large for one reply, split it with python scripts/split_book.py 3000.
5. Draft summary batches in order, preserving chronology and section fidelity.
6. Merge the batches with python scripts/book_tools.py aggregate .
7. Validate the final ratio with python scripts/verify_summary_ratio.py .
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.
π Tips & Best Practices
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.
π Constraints
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
