Build the pre-migration spec of a website — pages, redirects, 404s, layout variants, the EDS blocks each page needs with reuse verdicts, dynamic features, martech and open decisions — as documented knowledge files for people and a migration agent.
Install
npx skills add adobe/skills --skill specnpx skills add adobe/skills --skill spec -a claude-code -gnpx skills add adobe/skills --skill spec -a codex -ggemini skills install https://github.com/adobe/skills.git --path plugins/stardust/skills/specgh skill install adobe/skills specgit clone --depth 1 https://github.com/adobe/skills /tmp/adobe__skills
mkdir -p ~/.claude/skills ~/.agents/skills
cp -R /tmp/adobe__skills/plugins/stardust/skills/spec ~/.claude/skills/spec # Claude Code
cp -R /tmp/adobe__skills/plugins/stardust/skills/spec ~/.agents/skills/spec # Codex, Cursor, Gemini CLI, Copilot, OpenCode