Borrowing it
Nothing to install: this file belongs to ThomasHoussin/Claude-Book. Take a copy, put it at the same path in your own repository, and replace the rules that are about this project with yours.
curl -O https://raw.githubusercontent.com/ThomasHoussin/Claude-Book/main/.claude/skills/book-analyzer/SKILL.mdgit clone --depth 1 https://github.com/ThomasHoussin/Claude-BookWrote this? Show the measurements
A badge with what this costs and how it scanned, read live from this page, so it follows the numbers instead of freezing them. Markdown for a README, HTML for a documentation site or a project page.
[](https://agentmods.dev/skills/thomashoussin/claude-book/book-analyzer)<a href="https://agentmods.dev/skills/thomashoussin/claude-book/book-analyzer"><img src="https://agentmods.dev/badge/skills/thomashoussin/claude-book/book-analyzer.svg" alt="Measured on agentmods" height="20"></a>What it costs to keep this loaded
Counted locally with the o200k_base tokenizer, which is exact for GPT models; Claude uses its own tokenizer and its counts differ. Treat this as one consistent yardstick across the catalogue rather than a bill. Prices are per million input tokens.
| Model | Per session | Once invoked |
|---|---|---|
| Fable 5.1 | $0.00045 | $0.00578 |
| Opus 5 | $0.00023 | $0.00289 |
| Sonnet 5 | $0.00009 | $0.00116 |
| Haiku 4.5 | $0.00005 | $0.00058 |
Grade A, and why
book-analyzer scanned grade A with 0 findings against 26 rules in 11 categories — prompt injection, anti-refusal, data exfiltration, privilege escalation, supply chain, agent snooping, system-prompt leakage, SSRF and excessive agency — measured 8d ago.
A static scan of the body, not an audit. Every finding is printed with the line that produced it so you can judge whether it matters here. A mod is markdown that instructs an agent; that is exactly why what it instructs is worth reading.
Nothing flagged
None of the 26 patterns this scan looks for appear in this file: no shell pipes, no recursive deletes, no credential paths, no hidden text, no instruction-override or anti-refusal phrasing, no agent-config snooping. That is not a guarantee, it is the absence of the things that are checkable.
How it starts
The opening of the file, as written. The whole thing — 87 lines — stays where its author put it; the contents beside it link to each section on GitHub.
Book Analyzer
Extract structured bible files from source books for the writing framework.
Quick Start
# Analyze a single book
Analyze analysis/src/[book].txt
Output structure in analysis/output/[book-slug]/:
├── style.md
├── structure.md
├── characters/
│ └── [character].md
└── universe/
└── [location].md
Workflow
1. Read source completely
Load the full text, note overall structure and length.
2. Extract style
- Identify POV (first/third limited/omniscient)
- Identify tenses (primary, secondary)
- Sample 50 sentences for average length
- List 20-30 characteristic vocabulary items
- List dialogue tags used
- Estimate dialogue-to-prose ratio
- Note description techniques
3. Extract characters
For each significant character:
- Identity (name, age, role)
- Physical description
- 3-5 core personality traits with evidence
- 5-10 dialogue quotes showing voice
- Relationships mapped
4. Extract structure
- Map acts (setup/development/climax/resolution)
- Note chapter count and length range
- Analyze chapter openings and endings
- Identify recurring patterns
- Track mystery mechanics if applicable
5. Extract universe
For each significant location:
- Physical description with quotes
- Atmosphere and sensory details
- Story function
6. Generate files
Create all output files following templates in bible/.
Evidence-Based Extraction
Every trait, pattern, or rule must be supported by:
- Direct quotes (with chapter reference)
- Quantitative data (averages, counts, percentages)
Bad: "Claude is stubborn" Good: "Claude is stubborn (Ch.2: refuses to answer to 'Claudine'; Ch.5: insists on leading despite danger)"
Output Format
Follow templates exactly:
bible/style.md→output/[book]/style.mdbible/characters/_template.md→output/[book]/characters/[name].mdbible/universe/_template.md→output/[book]/universe/[name].mdbible/structure.md→output/[book]/structure.md
For detailed extraction checklists, see references/extraction-guide.md.
What ships with it
1 file beside SKILL.md in the same directory: the scripts, references and assets a skill reads on demand. Not counted in the per-session cost; read them before you install if any of them is executable.
What this file has done since we first saw it
Hashed on every crawl. A supply-chain change to an agent config is a question of when, not whether, so the history is kept rather than the latest state alone.
- 8d ago First seen · 87 lines · 45 tokens per session scan A 65e55bf40ff1
book-analyzer is a skill published in the GitHub repository ThomasHoussin/Claude-Book (112 stars, last pushed 7mo ago), licensed MIT. It adds 45 tokens to every session and 578 once invoked, about $0.0002 per session on Opus 5. A static security scan graded it A with 0 findings. No closer match exists in the catalogue, so it is treated as the original; first seen 2026-08-30.
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