Define an engineering change or experiment before implementation, with observable acceptance criteria and proportionate validation. Use for substantial changes, migrations, benchmarks or ambiguous requirements; keep routine fixes lightweight.
Install
npx skills add TianMingKanae/engineering-multi-ai-skills --skill engineering-plannpx skills add TianMingKanae/engineering-multi-ai-skills --skill engineering-plan -a claude-code -gnpx skills add TianMingKanae/engineering-multi-ai-skills --skill engineering-plan -a codex -ggemini skills install https://github.com/TianMingKanae/engineering-multi-ai-skills.git --path skills/engineering-plangh skill install TianMingKanae/engineering-multi-ai-skills engineering-plangit clone --depth 1 https://github.com/TianMingKanae/engineering-multi-ai-skills /tmp/TianMingKanae__engineering-multi-ai-skills
mkdir -p ~/.claude/skills ~/.agents/skills
cp -R /tmp/TianMingKanae__engineering-multi-ai-skills/skills/engineering-plan ~/.claude/skills/engineering-plan # Claude Code
cp -R /tmp/TianMingKanae__engineering-multi-ai-skills/skills/engineering-plan ~/.agents/skills/engineering-plan # Codex, Cursor, Gemini CLI, Copilot, OpenCode