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.
npx skills add majiayu000/claude-skill-registry --skill agent-development --agent claude-code
Same command for any agent — swap --agent for codex, cursor, copilot.
Weekly change comes from our own snapshots, not the repository page — it measures attention, not adoption.
# SOURCE: anthropics/claude-plugins-official # PATH: plugins/plugin-dev/skills/agent-development/SKILL.md # DO NOT EDIT: This file is synced from external source # 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 ```markdown --- 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
- Overview
- Agent File Structure
- Complete Format
- Frontmatter Fields
- name (required)
- description (required)
- model (required)
- color (required)
- tools (optional)
- System Prompt Design
- Structure
- Best Practices
- Creating Agents
- Method 1: AI-Assisted Generation
What does the Agent Development skill do?
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.
How do I install it?
Run `npx skills add majiayu000/claude-skill-registry --skill agent-development --agent claude-code` — it drops the skill into your project so the agent can pick it up. Swap the --agent value for codex, cursor or copilot if you use one of those.
Where does this skill come from?
From majiayu000/claude-skill-registry, a repository with 534 stars. We read it straight from the repository tree rather than a submitted listing, so what you see here is what is actually published.
Is a popular skill a good skill?
Not necessarily. Stars measure attention, not adoption — a repository can trend for a week and be abandoned. That is why we show the weekly change from our own snapshots next to the total, instead of a single flattering number.