Extract all chapters from an EPUB file into separate markdown files. Use when the user wants to split an EPUB into individual chapter files, extract EPUB chapters, or convert an ebook to separate markdown documents.
Install
npx skills add Abilityai/cornelius --skill epub-chapter-extractornpx skills add Abilityai/cornelius --skill epub-chapter-extractor -a claude-code -gnpx skills add Abilityai/cornelius --skill epub-chapter-extractor -a codex -ggemini skills install https://github.com/Abilityai/cornelius.git --path .claude/skills/epub-chapter-extractorgh skill install Abilityai/cornelius epub-chapter-extractorgit clone --depth 1 https://github.com/Abilityai/cornelius /tmp/Abilityai__cornelius
mkdir -p ~/.claude/skills ~/.agents/skills
cp -R /tmp/Abilityai__cornelius/.claude/skills/epub-chapter-extractor ~/.claude/skills/epub-chapter-extractor # Claude Code
cp -R /tmp/Abilityai__cornelius/.claude/skills/epub-chapter-extractor ~/.agents/skills/epub-chapter-extractor # Codex, Cursor, Gemini CLI, Copilot, OpenCode