Plan future work, investigate before building, research a topic, or compare the alternatives for a choice. Takes optional free text. The skill reads the request, open drafts, accepted canon, branch, and code, then creates only the documents a later reader needs — none for a small fix.
Install
npx skills add archcore-ai/archcore --skill plannpx skills add archcore-ai/archcore --skill plan -a claude-code -gnpx skills add archcore-ai/archcore --skill plan -a codex -ggemini skills install https://github.com/archcore-ai/archcore.git --path plugins/archcore/skills/plangh skill install archcore-ai/archcore plangit clone --depth 1 https://github.com/archcore-ai/archcore /tmp/archcore-ai__archcore
mkdir -p ~/.claude/skills ~/.agents/skills
cp -R /tmp/archcore-ai__archcore/plugins/archcore/skills/plan ~/.claude/skills/plan # Claude Code
cp -R /tmp/archcore-ai__archcore/plugins/archcore/skills/plan ~/.agents/skills/plan # Codex, Cursor, Gemini CLI, Copilot, OpenCode