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henmessiCOMMUNITY
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Agent Development

Design frontmatter and system prompts for Claude Code plugin agents.

1|Updated Dec 29, 2025
Search Tags:#agent development#autonomy#frontmatter#triggering#system-prompt
One-click install
npx skills add https://github.com/henmessi/plugin-dev --skill agent-development-henmessi
Or copy as Structured Prompt for Agent▼
Please help me install this Agent Skill.
Skill: Agent Development
Source: https://github.com/henmessi/plugin-dev/tree/main/skills/agent-development
Command: npx skills add https://github.com/henmessi/plugin-dev --skill agent-development-henmessi

SYSTEM DOCUMENTATION & REQUIREMENTS

💡 This Skill includes references (resource) and scripts (resource) components.

What problem does it solve?

This Skill explains how to design, front-matter, and system-prompt-draft agents for Claude Code plugins. It covers triggering cases, agent personas, and best practices to create reliable, autonomous agents.

Core Features & Use Cases

  • Frontmatter fields (name, description, model, color, tools)
  • System prompt structure for agent behavior
  • Trigger examples and progress disclosure
  • Guidance for proactive vs. reactive triggering
  • Validation and testing patterns for agents

Quick Start

Create an agent file (e.g., agents/my-agent.md) with frontmatter, a system prompt body, and at least 2 triggering examples. Validate with the provided validation script and test triggering scenarios.