Agent Builder - Claude Code Subagent Expert

Use this skill when creating, improving, or troubleshooting Claude Code subagents. Provides expert guidance on agent design, system prompt engineering, tool configuration, and delegation patterns.

When to Use This Skill

Activate this skill when:

• User asks to create a new subagent
• User wants to improve an existing agent
• User needs help with agent configuration or tool access
• User is troubleshooting agent invocation issues
• User wants to understand when to use agents vs skills vs commands
• User asks about agent chaining or delegation patterns

Quick Reference

Agent File Structure