agent-development
This skill should be used when the user asks to "create an agent", "add an agent", "write a subagent", "agent frontmatter", "when to use description", "agent examples", "agent tools", "agent colors", "autonomous agent", or needs guidance on agent structure, system prompts, triggering conditions, or agent development best practices for Claude Code plugins.
Best for Claude Code plugin develope…Works with GitHubLow risk
⌘source
- author
@anthropics- language
- Python
★18kstars
2.1kforks
Apr 22, 2026
✦overview.md
Key Features
- ·Defines autonomous agent structure for Claude Code plugins
- ·Specifies agent file format with YAML frontmatter
- ·Outlines triggering via description field with examples
- ·Covers system prompt design for agent behavior
- ·Includes model and color customization options
Use Cases
- →Creating a new autonomous agent for Claude Code plugins
- →Adding a subagent to handle complex multi-step tasks
- →Writing agent frontmatter with proper triggering conditions
- →Developing agent system prompts to define autonomous behavior
Best for
- ✓Claude Code plugin developers
- ✓Autonomous agent implementers
name
agent-development
description
This skill should be used when the user asks to "create an agent", "add an agent", "write a subagent", "agent frontmatter", "when to use description", "agent examples", "agent tools", "agent colors", "autonomous agent", or needs guidance on agent structure, system prompts, triggering conditions, or agent development best practices for Claude Code plugins.
version:0.1.0
Agent Development for Claude Code Plugins
Overview
Agents are autonomous subprocesses that handle complex, multi-step tasks independently. Understanding agent structure, triggering conditions, and system prompt design enables creating powerful autonomous capabilities.
Key concepts:
- Agents are FOR autonomous work, commands are FOR user-initiated actions
- Markdown file format with YAML frontmatter
- Triggering via description field with examples
- System prompt defines agent behavior
- Model and color customization
Agent File Structure
Complete Format
---
name: agent-identifier
description: Use this agent when [triggering conditions]. Examples:
<example>
Context: [Situation description]
user: "[User request]"
assistant: "[How assistant should respond and use this agent]"
<commentary>
[Why this agent should be triggered]
</commentary>
</example>
<example>
[Additional example...]
</example>
model: inherit
color: blue
tools: ["Read", "Write", "Grep"]
---
You are [agent role description]...
**Your Core Responsibilities:**
1. [Responsibility 1]
2. [Responsibility 2]
**Analysis Process:**
[Step-by-step workflow]
**Output Format:**
$install
1-click copynpx skills add anthropics/claude-plugins-official --skill agent-developmentSafety assessment
★
Clarity score
How clear and easy to understand the SKILL.md instructions are, rated from 1 to 5.
3/ 5
goodMostly clear, but there are still a few confusing or poorly structured parts.
◎
Actionability score
How directly an agent can act on the SKILL.md instructions, rated from 1 to 5.
3/ 5
mediumPartially actionable with several concrete steps, but still missing important details.