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write-subagent

@wayne930242/Reflexive-Claude-Code
4
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Create Claude Code subagent configurations for .claude/agents/. Defines specialized agents with isolated contexts. Use when creating dedicated agents for code review, testing, or domain-specific tasks.

Install Skill

1Download skill
2Enable skills in Claude

Open claude.ai/settings/capabilities and find the "Skills" section

3Upload to Claude

Click "Upload skill" and select the downloaded ZIP file

Note: Please verify skill by going through its instructions before using it.

SKILL.md

name write-subagent
description Create Claude Code subagent configurations for .claude/agents/. Defines specialized agents with isolated contexts. Use when creating dedicated agents for code review, testing, or domain-specific tasks.

Subagent Creator

Create specialized subagents that run in isolated contexts via the Task tool.

Core Principles

  1. Isolated Context - Each subagent has its own context window
  2. Specialized Role - One clear responsibility per subagent
  3. Minimal Tools - Grant only necessary tool access
  4. Clear Trigger - Description must indicate when to use

Subagent Structure

.claude/agents/
├── code-reviewer.md      # Project-level
├── test-runner.md
└── domain-expert.md

User-level agents go in ~/.claude/agents/.

File Format

---
name: agent-name
description: What this agent does. Use proactively when [triggers].
tools: Read, Grep, Glob, Bash
model: sonnet
skills: skill1, skill2
permissionMode: default
---

System prompt for the agent.

## Role
[Clear description of the agent's role]

## Process
[Steps the agent should follow]

## Output Format
[Expected output structure]

Configuration Fields

Field Required Description
name Yes Lowercase with hyphens: code-reviewer
description Yes Include "Use proactively when..." for auto-invoke
tools No CSV list; omit to inherit all tools
model No sonnet, opus, haiku, or inherit
skills No Auto-load skills when invoked
permissionMode No default, acceptEdits, bypassPermissions, plan

Model Selection

Model Use Case
haiku Fast exploration, simple tasks
sonnet Balanced capability (default)
opus Complex reasoning, architecture
inherit Use main conversation's model

Tool Recommendations

Subagent Type Recommended Tools
Code reviewer Read, Grep, Glob, Bash
Test runner Read, Bash, Grep
Explorer Read, Glob, Grep, Bash
Writer Read, Edit, Write, Bash

Trigger Patterns

For automatic invocation, include in description:

  • "Use proactively when..."
  • "Use immediately after..."
  • "MUST BE USED when..."

For manual invocation, omit proactive triggers.

Validation Checklist

  • Name is lowercase with hyphens
  • Description has clear trigger
  • Tools are minimal and appropriate
  • No overlapping responsibility with other agents
  • System prompt is focused and actionable

References