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-plugins-official --skill agent-developmentnpx skills add anthropics/claude-plugins-official --skill agent-development -a claude-code -gnpx skills add anthropics/claude-plugins-official --skill agent-development -a codex -ggemini skills install https://github.com/anthropics/claude-plugins-official.git --path plugins/plugin-dev/skills/agent-developmentgh skill install anthropics/claude-plugins-official agent-developmentgit clone --depth 1 https://github.com/anthropics/claude-plugins-official /tmp/anthropics__claude-plugins-official
mkdir -p ~/.claude/skills ~/.agents/skills
cp -R /tmp/anthropics__claude-plugins-official/plugins/plugin-dev/skills/agent-development ~/.claude/skills/agent-development # Claude Code
cp -R /tmp/anthropics__claude-plugins-official/plugins/plugin-dev/skills/agent-development ~/.agents/skills/agent-development # Codex, Cursor, Gemini CLI, Copilot, OpenCode