What is markdown-to-epub-converter?

A converter that turns Markdown files or text into EPUB3 ebooks, a book format supported by Kindle, Apple Books, Kobo, and other ebook readers.

Converting research documents, articles, blog posts, and chat summaries into portable ebooks.

It saves you from manually building ebook structure, chapters, formatting, and a table of contents.

markdown-to-epub-converter — Skill for Claude Code and Codex by eric86

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 eric861129/SKILLS_All-in-one --skill claude-epub-skill

Clone the repo

git clone --depth 1 https://github.com/eric861129/SKILLS_All-in-one

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.

README.md

[![agentmods](https://agentmods.dev/badge/skills/eric861129/skills_all-in-one/claude-epub-skill/github.svg)](https://agentmods.dev/skills/eric861129/skills_all-in-one/claude-epub-skill)

Your own site

<a href="https://agentmods.dev/skills/eric861129/skills_all-in-one/claude-epub-skill"><img src="https://agentmods.dev/badge/skills/eric861129/skills_all-in-one/claude-epub-skill/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.

Your own site · 80×15

<a href="https://agentmods.dev/skills/eric861129/skills_all-in-one/claude-epub-skill"><img src="https://agentmods.dev/badge/skills/eric861129/skills_all-in-one/claude-epub-skill.svg" alt="Reviewed on agentmods" width="80" height="20"></a>

Per session 31 Skills are progressive disclosure: only the name and description are preloaded; the body loads when the skill is used.

When invoked 1,472 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 100% copy Near-identical to another mod 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.

Model	Per session	Once invoked
Fable 5.1	$0.00031	$0.01472
Opus 5	$0.00015	$0.00736
Sonnet 5	$0.00006	$0.00294
Haiku 4.5	$0.00003	$0.00147

Measured 9d ago against content hash fa7ceaf36ab0, method: parsed. Prices are Anthropic first-party input rates as of 2026-09-12, from the pricing page.

Security

Grade A, and why

markdown-to-epub-converter 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 2 executable files (scripts/epub_generator.py, scripts/markdown_processor.py), 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.

Origin

This is a copy

100% identical to markdown-to-epub-converter — 0 lines differ, which has more behind it and is treated as the original. This page carries a canonical link to it rather than competing with it.

public/SKILLS/Media & Content/claude-epub-skill/SKILL.md · 198 lines

How it starts

The opening of the file, as written. The whole thing — 198 lines — stays where its author put it; the contents beside it link to each section on GitHub.

Markdown to EPUB Converter Skill

This skill transforms markdown documents into professional EPUB ebook files. Perfect for converting research documents, blog posts, articles, or chat conversation summaries into portable, device-agnostic ebook formats.

Overview

The skill accepts markdown content in multiple formats and generates a properly formatted EPUB3 file that works across all major ebook readers including:

Apple Books
Amazon Kindle (via Kindle for Mac/Windows/iOS/Android)
Google Play Books
Kobo and other EPUB readers
Any standard EPUB reader

Input Formats

Option 1: Raw Markdown Text

Provide markdown content directly in your message:

Convert this markdown to EPUB:
# My Book Title
## Chapter 1
This is chapter one content...

Option 2: File Path

Provide a path to a markdown file to be converted.

How It Works

Markdown Parsing: Analyzes your markdown and automatically:
- Treats H1 headers (#) as chapter boundaries
- Treats H2 headers (##) as section headings within chapters
- Preserves formatting (bold, italic, links, lists, code blocks)
Structure Generation: Creates proper EPUB structure:
- Automatic table of contents from chapters
- Navigation document (EPUB3 standard)
- Metadata (title, language, etc.)
File Creation: Generates a valid EPUB3 file ready for download and use

Usage Examples

Example 1: Convert a Blog Post

"Convert this markdown blog post to EPUB:

How to Build a Simple Web Server

Introduction

...content..."

Example 2: Convert a Research Summary

"I have research notes in markdown format. Convert them to an EPUB ebook. The content is:

Research Project: Machine Learning Basics

Chapter 1: Fundamentals

..."

Example 3: Convert a Chat Summary

"Summarize our conversation so far as markdown and convert it to an EPUB for reference"

Output

The skill generates a downloadable EPUB file that includes:

Professional formatting
Automatic table of contents
Proper chapter structure
Support for markdown formatting elements:
- Headers (all levels)
- Bold and italic text
- Hyperlinks
- Lists (ordered and unordered)
- Code blocks and inline code
- Blockquotes
- Horizontal rules

Read the full file on GitHub · 198 lines

Files

What ships with it

4 files 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.

9d ago First seen · 198 lines · 31 tokens per session scan A fa7ceaf36ab0

Subscribe to this mod's changes

markdown-to-epub-converter is a skill published in the GitHub repository eric861129/SKILLS_All-in-one (52 stars, last pushed 4mo ago), licensed MIT. It adds 31 tokens to every session and 1,472 once invoked, about $0.0002 per session on Opus 5. A static security scan graded it A with 0 findings. It is 100% identical to markdown-to-epub-converter, differing in 0 lines, and is treated as a copy.

Claude Code Documents Writing and docs agent-workflows ai-agent ai-tools chatgpt developer-tools

markdown-to-epub-converter