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agent-creator
by alexjx
⭐ 0🍴 0📅 Jan 6, 2026
SKILL.md
name: agent-creator description: Create Claude Code subagents. Use when user wants to create a subagent, specialized agent, or custom AI assistant for Claude Code.
Agent Creator
Creates Claude Code subagents - specialized AI assistants defined as markdown files.
What is a Subagent?
A subagent is a markdown file with YAML frontmatter that defines a specialized AI assistant. Claude Code delegates tasks to subagents based on their description.
File Format
---
name: agent-name
description: When to use this agent. Include trigger words.
tools: Read, Grep, Glob
model: sonnet
---
System prompt goes here. Define the agent's role, process, and output format.
Configuration Fields
| Field | Required | Description |
|---|---|---|
name | Yes | Lowercase letters and hyphens only |
description | Yes | When Claude should use this agent |
tools | No | Comma-separated list. Omit to inherit all tools |
model | No | haiku, sonnet, opus, or inherit |
Available Tools
Read, Write, Edit, Bash, Glob, Grep, WebFetch, WebSearch, plus any MCP tools.
File Locations
| Location | Scope |
|---|---|
.claude/agents/ | Current project only |
~/.claude/agents/ | All projects for this user |
Creating a Subagent
-
Ask user for:
- Agent name
- Purpose and when to trigger
- Required tools (minimal set)
- Model choice
-
Create the markdown file with:
- Clear, specific description with trigger words
- Focused system prompt
- Minimal tool permissions
-
Save to the location user specifies
Best Practices
- Focused purpose: One clear responsibility per agent
- Specific triggers: Include action words in description ("Use when...", "Proactively...")
- Minimal tools: Only grant necessary tools
- Clear output format: Define expected response structure in prompt
Example: Code Reviewer
---
name: code-reviewer
description: Reviews code for quality and security. Use after code changes.
tools: Read, Grep, Glob, Bash
model: sonnet
---
You are a code reviewer. When invoked:
1. Run git diff to see changes
2. Review for quality, security, maintainability
3. Provide feedback by priority: Critical > Warnings > Suggestions
Score
Total Score
50/100
Based on repository quality metrics
✓SKILL.md
SKILL.mdファイルが含まれている
+20
○LICENSE
ライセンスが設定されている
0/10
○説明文
100文字以上の説明がある
0/10
○人気
GitHub Stars 100以上
0/15
○最近の活動
3ヶ月以内に更新がある
0/10
○フォーク
10回以上フォークされている
0/5
✓Issue管理
オープンIssueが50未満
+5
✓言語
プログラミング言語が設定されている
+5
○タグ
1つ以上のタグが設定されている
0/5
Reviews
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