book-to-skill is a skill in alirezarezvani/claude-skills, last changed 31 Oct 2026. It can run shell commands, reach the network, name web addresses and bundle scripts — read the findings before installing.

From the author
Use when turning a book, docs folder or spec collection (PDF, EPUB, DOCX, HTML, Markdown) into an agent skill, before summarizing it by hand. Extracts with extract_document.py, compiles chapters, glossary and cheatsheet, validates with book_skill_validator.py and enforces a rights gate.

At a glance

What it can touch

How much a skill can do, not whether it is risky.

Pattern check

2 items to review

Instructions in HTML comments or hidden HTML

R18 · High · assets/chapter_template.md:9and 1 more

Commit 7f92eda · 3 Nov 2026

How the check works

Pattern check:2 items to reviewSee them

Install

Each tab says whether it installs commit 7f92eda, the one we checked, or the latest version.

Read these 2 items before installing, starting with Instructions in HTML comments or hidden HTML — assets/chapter_template.md:9

Read SKILL.md first
MIT
Licence
29.2k
Repo stars
Publisher

What it can touch

From the files and frontmatter at commit 7f92eda. This is how much a skill can do, not whether it is risky.

  • Runs shell commands

    Its instructions or files give the agent commands to run on your computer.

  • Reaches the network

    It sends or fetches data over the internet, for example with curl, an HTTP library or a package install.

  • Names web addresses

    It mentions outside web addresses the agent may visit. We list them but don't follow them.

    Outside links we did not follow
  • Bundles scripts

    The folder holds code files the agent may run.

Pattern check

Pattern check: 2 items to review · commit 7f92eda · 3 Nov 2026

We checked every text file in this skill, at commit 7f92eda on 3 Nov 2026, against 45 published patterns such as download-and-run commands, hidden text and credential access. We don't run the skill, we don't read the web pages it points to, and we can't judge everything its instructions might lead an agent to do. In published tests, pattern checks like this one missed most malicious skills. Read the skill before you install it — especially anything it asks you to download or run.

How the check worksReport an incorrect finding

  • https://github.com/virgiliojr94/book-to-skill
  • https://calibre-ebook.com/download
  • http://schemas.openxmlformats.org/wordprocessingml/2006/main
  • https://alirezarezvani.com
  • https://github.com/alirezarezvani/claude-skills

Format check

Each agent reads SKILL.md a little differently. We check the file against each one's published rules; we don't run the skill in any agent.

  • Agent Skills specPasses

    The open format from agentskills.io, held to the strictest version of each rule among the agents we check.

    • Note

      Reference files over 100 lines with no table of contents at the top: references/conversion_workflow.md (426 lines), references/document_extraction_pipeline.md (162 lines), references/knowledge_extraction_canon.md (140 lines), references/progressive_disclosure_budgets.md (156 lines) and references/rights_and_provenance.md (164 lines). B5

      Fix: Add a short list of the sections at the top of each.

  • Claude CodePasses

    Claude Code reads its own extra fields, ignores unknown ones, and still loads a skill whose frontmatter is broken, without its fields.

    • Note

      Reference files over 100 lines with no table of contents at the top: references/conversion_workflow.md (426 lines), references/document_extraction_pipeline.md (162 lines), references/knowledge_extraction_canon.md (140 lines), references/progressive_disclosure_budgets.md (156 lines) and references/rights_and_provenance.md (164 lines). B5

      Fix: Add a short list of the sections at the top of each.

  • Claude apps & API uploadPasses

    Uploading to claude.ai or the Claude API, or packaging with Anthropic's script, accepts only the six spec fields and stops on anything else.

    • Note

      The description is 287 characters. The claude.ai Help Center says 200 at most, though Anthropic's API docs and validator allow 1,024. D4

      Fix: If the claude.ai upload refuses it, trim the description to 200 characters.

    • Note

      Reference files over 100 lines with no table of contents at the top: references/conversion_workflow.md (426 lines), references/document_extraction_pipeline.md (162 lines), references/knowledge_extraction_canon.md (140 lines), references/progressive_disclosure_budgets.md (156 lines) and references/rights_and_provenance.md (164 lines). B5

      Fix: Add a short list of the sections at the top of each.

  • OpenAI (Codex & API)Passes
  • VS Code & CopilotPasses

SKILL.md

Files

28 files

PathSize
SKILL.md (opens in a new tab)11.2 KB
assets/chapter_template.md (opens in a new tab)2.8 KB
assets/cheatsheet_template.md (opens in a new tab)2.5 KB
assets/master_skill_template.md (opens in a new tab)3.1 KB
references/conversion_workflow.md (opens in a new tab)16.7 KB
references/document_extraction_pipeline.md (opens in a new tab)9.4 KB
references/knowledge_extraction_canon.md (opens in a new tab)7.4 KB
references/progressive_disclosure_budgets.md (opens in a new tab)8.3 KB
references/rights_and_provenance.md (opens in a new tab)8.1 KB
scripts/book_skill_validator.py (opens in a new tab)24.9 KB
scripts/book_to_skill/__init__.py (opens in a new tab)937 B
scripts/book_to_skill/config.py (opens in a new tab)2.9 KB
scripts/book_to_skill/dependencies.py (opens in a new tab)11.2 KB
scripts/book_to_skill/exceptions.py (opens in a new tab)117 B
scripts/book_to_skill/parsers/__init__.py (opens in a new tab)18 B
scripts/book_to_skill/parsers/calibre.py (opens in a new tab)1.5 KB
scripts/book_to_skill/parsers/docx.py (opens in a new tab)4 KB
scripts/book_to_skill/parsers/epub.py (opens in a new tab)6.1 KB
scripts/book_to_skill/parsers/html_text.py (opens in a new tab)4.3 KB
scripts/book_to_skill/parsers/pdf.py (opens in a new tab)4.9 KB
Show 8 more

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Repo facts from GitHub on 3 Nov 2026. Files read at commit 7f92eda.

QAI did not write these skills and is not affiliated with their authors unless a page says so. Logos and icons belong to their owners and are not a mark of approval. How we check