Fetch a URL or convert a local file (PDF/DOCX/HTML/etc.) into Markdown using `uvx markitdown`, optionally it can summarize
Install
npx skills add mitsuhiko/agent-stuff --skill summarizenpx skills add mitsuhiko/agent-stuff --skill summarize -a claude-code -gnpx skills add mitsuhiko/agent-stuff --skill summarize -a codex -ggemini skills install https://github.com/mitsuhiko/agent-stuff.git --path skills/summarizegh skill install mitsuhiko/agent-stuff summarizegit clone --depth 1 https://github.com/mitsuhiko/agent-stuff /tmp/mitsuhiko__agent-stuff
mkdir -p ~/.claude/skills ~/.agents/skills
cp -R /tmp/mitsuhiko__agent-stuff/skills/summarize ~/.claude/skills/summarize # Claude Code
cp -R /tmp/mitsuhiko__agent-stuff/skills/summarize ~/.agents/skills/summarize # Codex, Cursor, Gemini CLI, Copilot, OpenCode