agent-development作者： anthropic

Comprehensive guide for building autonomous agents in Claude Code plugins with structured frontmatter, system prompts, and triggering conditions. Agents are autonomous subprocesses defined in markdown files with YAML frontmatter; use them for multi-step independent work, not user-initiated commands Required frontmatter fields: name (3–50 lowercase-hyphenated characters), description (with 2–4 concrete triggering examples), model (inherit/sonnet/opus/haiku), and color...