# Agent Development > This skill should be used when the user asks to "create an agent", "write an agent", "build an agent", or wants to add new agent capabilities to Claude Code. Use when this capability is needed. - Skill: `tomevault-io/agent-development-3` (Agent Skill, multi-file: 2 files) - Install (CLI): `npx skillmds@latest add tomevault-io/agent-development-3` - Raw SKILL.md: https://api.skillmd.com/api/skills/tomevault-io/agent-development-3/raw - Safety review: pending (external: skill-scanner PASS, skillspector PASS) - Works with: Claude Code, Claude.ai, OpenAI Codex - Category: AI & ML - Author: tomevault-io (https://skillmd.com/u/tomevault-io) - Updated: 2026-09-17 - Page: https://skillmd.com/skills/tomevault-io/agent-development-3 --- # Agent Development Create effective Claude Code agents. ## Agent Colors Agents support color assignments for visual distinction. Set in YAML frontmatter: ```yaml --- name: explore description: Explores codebases color: purple --- ``` ### Color Conventions | Color | Agent Type | Purpose | |-------|------------|---------| | Purple | Explore | Codebase exploration, documentation | | Blue | Plan | Analysis, planning, architecture | | Green | Create | Testing, creation, validation | | Orange | Debug | Debugging, refactoring | | Yellow | Clean | Optimization, cleanup | | Red | Reflect | Security, critical review | | Pink | - | Available | | Cyan | - | Orchestration, coordination | ## Agent Behavior ### Permission Denial Resilience Subagents continue after permission denial rather than stopping entirely. When a subagent hits a permissions wall, it tries alternative approaches automatically. This makes autonomous workflows more resilient and reduces the need for human intervention. ## Important After creating or modifying agents, inform the user: > **No restart needed.** Agent changes take effect immediately - agents are hot-reloaded. --- > Converted and distributed by [TomeVault](https://tomevault.io/claim/dwmkerr) — claim your Tome and manage your conversions.