Agent Development for Claude Code Build effective custom agents for Claude Code with proper delegation, tool access, and prompt design. Agent Description Pattern The description field determines whether Claude will automatically delegate tasks. Strong Trigger Pattern Weak vs Strong Descriptions | Weak (won't auto-delegate) | Strong (auto-delegates) | |---------------------------|-------------------------| | "Analyzes screenshots for issues" | "Visual QA specialist. MUST BE USED when analyzing screenshots. Use PROACTIVELY for visual QA." | | "Runs Playwright scripts" | "Playwright specialist.…