# Agent Development

> Claude Code subagent frontmatter

**Subcategory:** Anthropic  
**License:** Apache-2.0  
**Source:** https://github.com/anthropics/claude-plugins-official/blob/main/plugins/plugin-dev/skills/agent-development/SKILL.md

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## When it is useful

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.

## The Catch

Claude Code subagent frontmatter (when-to-use, tools, colors). “Create an agent” outside plugins is a false fire.