Use when executing a written implementation plan with independent tasks in the current session where delegation beats inline coordination cost; otherwise inline. Ad-hoc 2+ tasks without a plan use dispatching-parallel-agents.
Install
npx skills add GanyuanRan/Aegis --skill subagent-driven-developmentnpx skills add GanyuanRan/Aegis --skill subagent-driven-development -a claude-code -gnpx skills add GanyuanRan/Aegis --skill subagent-driven-development -a codex -ggemini skills install https://github.com/GanyuanRan/Aegis.git --path skills/subagent-driven-developmentgh skill install GanyuanRan/Aegis subagent-driven-developmentgit clone --depth 1 https://github.com/GanyuanRan/Aegis /tmp/GanyuanRan__Aegis
mkdir -p ~/.claude/skills ~/.agents/skills
cp -R /tmp/GanyuanRan__Aegis/skills/subagent-driven-development ~/.claude/skills/subagent-driven-development # Claude Code
cp -R /tmp/GanyuanRan__Aegis/skills/subagent-driven-development ~/.agents/skills/subagent-driven-development # Codex, Cursor, Gemini CLI, Copilot, OpenCode