This skill should be used when the user asks to "create an agent", "add an agent", "write a subagent", "agent frontmatter", "when to use description", "agent examples", "agent tools", "agent colors", "autonomous agent", or needs guidance on agent structure, system prompts, triggering conditions, or agent development best practices for Claude Code plugins.
Install
npx skills add anthropics/claude-code --skill 'Agent Development'npx skills add anthropics/claude-code --skill 'Agent Development' -a claude-code -gnpx skills add anthropics/claude-code --skill 'Agent Development' -a codex -ggemini skills install https://github.com/anthropics/claude-code.git --path plugins/plugin-dev/skills/agent-developmentgh skill install anthropics/claude-code 'Agent Development'git clone --depth 1 https://github.com/anthropics/claude-code /tmp/anthropics__claude-code
mkdir -p ~/.claude/skills ~/.agents/skills
cp -R /tmp/anthropics__claude-code/plugins/plugin-dev/skills/agent-development ~/.claude/skills/'Agent Development' # Claude Code
cp -R /tmp/anthropics__claude-code/plugins/plugin-dev/skills/agent-development ~/.agents/skills/'Agent Development' # Codex, Cursor, Gemini CLI, Copilot, OpenCode