# Subagent Creator

> Creates new subagent configuration files in .claude/agents/

- Skill: `tomevault-io/subagent-creator-4` (Agent Skill, multi-file: 2 files)
- Install (CLI): `npx skillmds@latest add tomevault-io/subagent-creator-4`
- Raw SKILL.md: https://api.skillmd.com/api/skills/tomevault-io/subagent-creator-4/raw
- Safety review: pending
- Works with: Claude Code, Claude.ai, OpenAI Codex
- Category: Coding & Dev Tools
- Author: tomevault-io (https://skillmd.com/u/tomevault-io)
- Updated: 2026-09-17
- Page: https://skillmd.com/skills/tomevault-io/subagent-creator-4

---


Create a new subagent by generating a Markdown file in `.claude/agents/`.

## Process

### 1. Gather Requirements

If the user provided `$ARGUMENTS`, use it as the agent name. Otherwise ask:

- **Name**: lowercase, hyphens only (e.g., `code-reviewer`, `test-runner`)
- **Purpose**: What task does this agent handle?
- **Language**: What language should the agent respond in? (default: Korean with English technical terms)

### 2. Determine Configuration

Based on the purpose, decide:

| Field | How to decide |
|-------|---------------|
| `model` | `haiku` for fast search/lookup, `sonnet` for general tasks, `opus` for complex reasoning |
| `tools` | Only grant what's needed. Read-only tasks → `Read, Glob, Grep, WebSearch, WebFetch`. Code changes → add `Edit, Write, Bash` |

### 3. Write the Agent File

Create `.claude/agents/{name}.md` with this structure:

```markdown
---
name: {name}
description: "{1-2 sentence description of when Claude should delegate to this agent. Include example triggers.}"
model: {model}
---

{System prompt: role definition, methodology, output format, guidelines}
```

### 4. Description Field Guidelines

The `description` field is critical — Claude uses it to decide when to auto-delegate. Write it to include:

- **When** to use this agent (trigger conditions)
- **Example user messages** that should activate it (use `<example>` blocks)
- Format examples in the pattern used by existing agents in `.claude/agents/`

### 5. System Prompt Guidelines

The body after frontmatter is the agent's system prompt. Include:

1. **Role definition**: Who is this agent? What expertise does it have?
2. **Core mission**: One clear sentence on what it does
3. **Methodology**: Step-by-step process the agent should follow
4. **Output format**: How to structure the response
5. **Operational guidelines**: Rules and constraints
6. **Language**: Match the project convention (Korean with English technical terms)

### 6. Verify

After creating the file, read it back and confirm with the user.

## Reference

Check existing agents in `.claude/agents/` for style consistency before writing.

---
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<!-- tomevault:4.0:skill_md:2026-04-16 -->