Copy link makes a link with the deck after "#d=": its text deflated (raw) and base64url-encoded, which browsers never send to a server, so nothing is stored. The page opens a deck it finds in its address, on load or when one is pasted in later, and also takes "#md=" with the text percent-encoded, for anything that can't compress. A link is kept ready while you type so a click copies it at once, the address bar shows it after copying, and notes say when a deck came from a link, when a link is broken, and when one is long enough that some apps may cut it short. The README documents the format with Python, Node and shell snippets for agents and scripts, and its live-page link now points at mdecks.yolopreneur.lol.
Co-Authored-By: Claude Opus 5.5 <noreply@anthropic.com>
Claude-Session: https://claude.ai/code/session_01CYHXFvWMCs1GUmRmpySqQ6
