Supercard v3 spec — Atlas manifest

Supercard is a screenshot-shareable, single-emphasis-per-block knowledge artifact — a cognitive prosthesis. The full machine-readable Supercard v3 specification is published here as a progressive-disclosure JSON tree.

Start here:

  • Manifest (canonical): berafoot.com/spec/index.json
  • Manifest (Vercel-app fallback): supercard-seven.vercel.app/spec/index.json
  • Agent guide: /spec/agent-guide.json
  • Drop-in prompt: /spec/PROMPT.md

Every layer's absolute URL is in the manifest's layers[].url and bootstrap_urls, with a Vercel-app fallback in mirror_urls.by_layer.