md-to-epub

md-to-epub is a skill for Claude Code, Codex from fabioc-aloha/Alex_Skill_Mall. It costs 18 tokens per session (267 once invoked), scanned A, original, MIT.

A tool that turns Markdown into EPUB 3 e-books, a standard format for reflowable digital books. It supports chapters, embedded images, covers, metadata, and tables of contents through Pandoc.

In plain words
What is it for?
Create multi-chapter e-books, guides, and other long-form publications, then check them with epubcheck before release.
Why use it?
It avoids manually rebuilding long Markdown documents for e-book distribution.

Skill for Claude CodeCodex

Written for no agent in particular: nothing here depends on one.

Good fit Create multi-chapter e-books, guides, and other long-form publications, then check them with epubcheck before release.

Compare 6 skills from other repositories ↓
Install with agentmods
npx agentmods add skills/fabioc-aloha/alex_skill_mall/md-to-epub
Install

Getting it into your agent

One page per mod, every tool's command on it. A separate URL per tool would split the same page into five that compete with each other.

Any agent
npx skills add fabioc-aloha/Alex_Skill_Mall --skill md-to-epub
Clone the repo
git clone --depth 1 https://github.com/fabioc-aloha/Alex_Skill_Mall

Made for: Claude Code, Codex.

Wrote 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.

agentmods badge for md-to-epub

README.md
[![agentmods](https://agentmods.dev/badge/skills/fabioc-aloha/alex_skill_mall/md-to-epub/github.svg)](https://agentmods.dev/skills/fabioc-aloha/alex_skill_mall/md-to-epub)
Your own site
<a href="https://agentmods.dev/skills/fabioc-aloha/alex_skill_mall/md-to-epub"><img src="https://agentmods.dev/badge/skills/fabioc-aloha/alex_skill_mall/md-to-epub/github.svg" alt="Measured on agentmods" height="20"></a>

Or the 80×15 button, for a site that already has a row of RSS and ATOM ones. Only the verdict fits; the numbers stay here.

agentmods 80×15 button for md-to-epub

Your own site · 80×15
<a href="https://agentmods.dev/skills/fabioc-aloha/alex_skill_mall/md-to-epub"><img src="https://agentmods.dev/badge/skills/fabioc-aloha/alex_skill_mall/md-to-epub.svg" alt="Reviewed on agentmods" width="80" height="20"></a>
Per session 18 Skills are progressive disclosure: only the name and description are preloaded; the body loads when the skill is used.
When invoked 267 The whole file, excluding the scripts and references it only reads on demand.
Security scan A 0 findings. A grade says what 26 rules found in the file — not that it is safe.
Origin original No closer match found in the catalogue.
Token cost

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.

ModelPer sessionOnce invoked
Fable 5.1 $0.00018 $0.00267
Opus 5 $0.00009 $0.00133
Sonnet 5 $0.00004 $0.00053
Haiku 4.5 $0.00002 $0.00027

Measured 9d ago against content hash 1d5d884760ff, method: parsed. Prices are Anthropic first-party input rates as of 2026-09-12, from the pricing page.

Security

Grade A, and why

md-to-epub 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 9d ago.

The scan reads SKILL.md. This mod also ships 1 executable file (md-to-epub.cjs), listed below but not scanned — reading those needs a real analyzer, not pattern matching.

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.

plugins/converters/md-to-epub/skills/md-to-epub/SKILL.md · 52 lines

What it actually says

md-to-epub

Convert Markdown to EPUB 3 e-books via Pandoc.

When to Use

  • Long-form documents distributed as e-books
  • Multi-chapter content with embedded images
  • Documents needing TOC, cover, and reflowable text

What's Here

md-to-epub.cjs — Node script that wraps Pandoc.

External Dependencies

  • node (≥ 16)
  • pandoc (≥ 3.0) on PATH

Usage

node md-to-epub.cjs input.md
node md-to-epub.cjs input.md --output book.epub
node md-to-epub.cjs input.md --cover cover.png

Frontmatter Hooks

---
title: My Book
author: Your Name
publisher: Press Name
language: en
cover-image: cover.png
toc: true
---

Notes

  • Mermaid diagrams pre-rendered to PNG and embedded
  • Each H1 becomes a chapter; H2 subsections
  • Validate with epubcheck before distribution
Files

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.

Changes

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.

  1. 9d ago First seen · 52 lines · 18 tokens per session scan A 1d5d884760ff

Subscribe to this mod's changes

md-to-epub is a skill published in the GitHub repository fabioc-aloha/Alex_Skill_Mall (4 stars, last pushed yesterday), licensed MIT. It adds 18 tokens to every session and 267 once invoked, about $0.0001 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 2026-09-03.

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