Save as Markdown

Write the named source to a .md file, in full, and say where it is. The body comes from the fetched bytes, never from a summary.

• IS: one named source (URL, attachment, paste, YouTube video, Google Doc, PDF) to one .md in the user's tree.
• IS NOT: answering from a fetch, summarizing into chat, crawling beyond the URLs named, or reconstructing a talk from memory.

Done

A .md exists where the user can open it, with this frontmatter, and reading it back returns the source's last paragraph:

---
title: "<title>"
source: "<URL or path>"
date: "<date -u +%Y-%m-%dT%H:%M:%SZ, run now>"
type: web | youtube | gdoc | sheet | slides | pdf | docx | tweet | conversation
---

Fetch with curl -sSL -o <file> <url> and read the file. Prefer a text endpoint over HTML chrome. A missing file with a named reason (paywall, login wall, bot check, private doc) beats a plausible one.

Gotchas

• WebFetch hands the page to a small model and returns its answer: a 1,200-word post came back as 120 words. Only Content-Type: text/markdown under 100K characters passes through intact.
• oEmbed, GitHub ?raw=true, and Drive downloads redirect across hosts. Without -L you save an empty 301.
• YouTube's "Sign in to confirm you're not a bot" is an IP block: --cookies-from-browser on a laptop, stop in a sandbox. The description is not the talk.
• An empty .md next to a large PDF means a scan, not a blank document: render the pages and read them.

Maintenance only: evals/evals.json holds scenarios and routing prompts for anyone changing this skill.