Plugin Creator

Plugin Creator

Purpose

Automatically scaffolds new Claude Code plugins with complete directory structure, required files, proper formatting, and marketplace catalog integration - specifically optimized for the claude-code-plugins repository.

Trigger Keywords

• "create plugin" or "new plugin"
• "plugin from template"
• "scaffold plugin"
• "generate plugin"
• "add new plugin to marketplace"

Plugin Creation Process

When activated, I will:

1. Gather Requirements

   • Plugin name (kebab-case)
   • Category (productivity, security, devops, etc.)
   • Type (commands, agents, skills, MCP, or combination)
   • Description and keywords
   • Author information

2. Create Directory Structure

   plugins/[category]/[plugin-name]/
   ├── .claude-plugin/
   │   └── plugin.json
   ├── README.md
   ├── LICENSE
   └── [commands|agents|skills|hooks|mcp]/
   

3. Generate Required Files

   • plugin.json with proper schema (name, version, description, author)
   • README.md with comprehensive documentation
   • LICENSE (MIT by default)
   • Component files based on type

4. Add to Marketplace Catalog

   • Update .claude-plugin/marketplace.extended.json
   • Run npm run sync-marketplace automatically
   • Validate catalog schema

5. Validate Everything

   • Run ./scripts/validate-all.sh on new plugin
   • Check JSON syntax with jq
   • Verify frontmatter in markdown files
   • Ensure scripts are executable

Plugin Types Supported

Commands Plugin

• Creates commands/ directory
• Generates example command with proper frontmatter
• Includes /demo-command example

Agents Plugin

• Creates agents/ directory
• Generates example agent with capabilities
• Includes model specification

Skills Plugin

• Creates skills/skill-name/ directory
• Generates SKILL.md with proper format
• Includes trigger keywords and allowed-tools

MCP Plugin

• Creates src/, dist/, mcp/ directories
• Generates TypeScript boilerplate
• Includes package.json with MCP SDK
• Adds to pnpm workspace

Full Plugin

• Combines all types
• Creates complete example structure
• Ready for customization

File Templates

plugin.json Template

{
  "name": "plugin-name",
  "version": "1.0.0",
  "description": "Clear description",
  "author": {
    "name": "Author Name",
    "email": "[email protected]"
  },
  "repository": "https://github.com/jeremylongshore/claude-code-plugins",
  "license": "MIT",
  "keywords": ["keyword1", "keyword2"]
}

Command Template

---
name: command-name
description: What this command does
model: sonnet
---

# Command Title

Instructions for Claude...

Skill Template

---
name: Skill Name
description: What it does AND when to use it
allowed-tools: Read, Write, Grep
---

# Skill Name

## Purpose
[What this skill does]

## Trigger Keywords
- keyword1
- keyword2

## Instructions
[Step-by-step for Claude]

Marketplace Integration

I automatically:

1. Add plugin entry to marketplace.extended.json
2. Run npm run sync-marketplace to update CLI catalog
3. Validate both catalogs with jq
4. Check for duplicate names
5. Verify source paths exist

Validation Steps

After creation:

• ✅ All required files present
• ✅ Valid JSON (plugin.json, catalogs)
• ✅ Proper frontmatter in markdown
• ✅ Scripts executable (chmod +x)
• ✅ No duplicate plugin names
• ✅ Category is valid
• ✅ Keywords present

Repository-Specific Features

For claude-code-plugins repo:

• Follows exact directory structure
• Uses correct marketplace slug (claude-code-plugins-plus)
• Includes proper LICENSE file
• Adds to correct category folder
• Validates against existing plugins
• Updates version in marketplace

Output

I provide:

✅ Created plugin: plugin-name
📁 Location: plugins/category/plugin-name/
📝 Files created: 8
🔍 Validation: PASSED
📦 Marketplace: UPDATED
✨ Ready to commit!

Next steps:
1. Review files in plugins/category/plugin-name/
2. Customize README.md and component files
3. Run: git add plugins/category/plugin-name/
4. Run: git commit -m "feat: Add plugin-name plugin"

Examples

User says: "Create a new security plugin called 'owasp-scanner' with commands"

I automatically:

1. Create directory: plugins/security/owasp-scanner/
2. Generate plugin.json, README, LICENSE
3. Create commands/ with example
4. Add to marketplace.extended.json
5. Sync marketplace.json
6. Validate all files
7. Report success

User says: "Scaffold a Skills plugin for code review"

I automatically:

1. Create directory with skills/ subdirectories
2. Generate SKILL.md templates
3. Add trigger keywords for code review
4. Add to marketplace
5. Validate and report