Use when starting a feature or system, when code and the business use different words for the same thing, or when drawing boundaries between subsystems.
Install
npx skills add yutna/functional-design-skills --skill functional-capturing-the-domainnpx skills add yutna/functional-design-skills --skill functional-capturing-the-domain -a claude-code -gnpx skills add yutna/functional-design-skills --skill functional-capturing-the-domain -a codex -ggemini skills install https://github.com/yutna/functional-design-skills.git --path plugin/skills/functional-capturing-the-domaingh skill install yutna/functional-design-skills functional-capturing-the-domaingit clone --depth 1 https://github.com/yutna/functional-design-skills /tmp/yutna__functional-design-skills
mkdir -p ~/.claude/skills ~/.agents/skills
cp -R /tmp/yutna__functional-design-skills/plugin/skills/functional-capturing-the-domain ~/.claude/skills/functional-capturing-the-domain # Claude Code
cp -R /tmp/yutna__functional-design-skills/plugin/skills/functional-capturing-the-domain ~/.agents/skills/functional-capturing-the-domain # Codex, Cursor, Gemini CLI, Copilot, OpenCode