sdd-toolkit

Personal Skills Marketplace

Plugin marketplace for Claude Code — hosted on GitHub, installable via the /plugin command.

Quick Start

Set up the marketplace in Claude Code (one-time)

# Via HTTPS (with GitHub PAT)
/plugin marketplace add https://github.com/mgoericke/javamark-claude-plugins.git

# Via SSH
/plugin marketplace add [email protected]:mgoericke/javamark-claude-plugins.git

Prerequisite: git clone must work for the repository (SSH key or PAT configured).

Install plugins

# Open the plugin manager and browse
/plugin

# Or install directly
/plugin install sdd-toolkit@javamark-claude-skills
/plugin install java-scaffold@javamark-claude-skills
/plugin install review-toolkit@javamark-claude-skills

Use plugins

After installation, slash commands and skills are automatically available:

/coworker                  # Start coworker mode (from sdd-toolkit)
/scaffold UserProfile      # Generate a Quarkus feature (from java-scaffold)

Skills are automatically activated when they match the current task.

Available Plugins

Plugin	Description	Skills	Commands
sdd-toolkit	Spec-Driven Development	spec-feature, coworker	/coworker, /spec
java-scaffold	Quarkus/BCE project scaffolding	java-scaffold	/scaffold
openapi-toolkit	OpenAPI specifications	openapi	—
review-toolkit	Code reviews	review	/review
doc-toolkit	Documentation & blog posts	doc, blog-post	/blog, /adr
frontend-toolkit	TailAdmin/Alpine.js UIs	frontend	/prototype
infografik	Data visualization	infografik	/infografik
token-budget	LLM token budget management	token-budget	/token-budget

Create a New Plugin

1. Copy the template:

   cp -r _template plugins/my-new-plugin
   

2. Configure the plugin:

   • Edit plugins/my-new-plugin/.claude-plugin/plugin.json
   • Create skills under skills/ (each skill needs a SKILL.md)
   • Optional: commands under commands/, agents under agents/

3. Register in the marketplace:

   • Add an entry to the plugins array in .claude-plugin/marketplace.json

4. Validate and push:

   # Optional: Validate locally
   claude plugin validate .
   
   # Push to GitHub
   git add -A && git commit -m "feat: new plugin my-new-plugin" && git push
   

5. Update for users:

   /plugin marketplace update
   

Directory Structure

javamark-claude-skills/
├── .claude-plugin/
│   └── marketplace.json          # Plugin registry
├── plugins/
│   ├── sdd-toolkit/
│   │   ├── .claude-plugin/
│   │   │   └── plugin.json       # Plugin manifest
│   │   ├── skills/
│   │   │   ├── spec-feature/
│   │   │   │   └── SKILL.md      # Skill instructions
│   │   │   └── coworker/
│   │   │       └── SKILL.md
│   │   └── commands/
│   │       └── coworker.md       # /coworker slash command
│   ├── java-scaffold/
│   ├── openapi-toolkit/
│   ├── review-toolkit/
│   │   ├── skills/review/
│   │   └── agents/               # Specialized sub-agents
│   ├── doc-toolkit/
│   ├── frontend-toolkit/
│   ├── infografik/
│   └── token-budget/
│       ├── skills/token-budget/
│       ├── commands/
│       └── references/          # Budget type implementations
├── _template/                    # Template for new plugins
└── README.md

Plugin Anatomy

plugin.json (Manifest)

{
  "name": "my-plugin",
  "version": "1.0.0",
  "description": "What does this plugin do?",
  "author": { "name": "Mark" },
  "components": {
    "skills": ["skills/"],
    "commands": ["commands/"],
    "agents": ["agents/"]
  }
}

SKILL.md (Skill Definition)

---
name: skill-name
description: When should this skill be activated?
---

# Skill Name

## Purpose
[What does the skill do?]

## Instructions
[How should Claude proceed?]

Slash Command (.md file in commands/)

---
description: Brief description
---

# /command-name

Instructions for Claude when /command-name is invoked.
Arguments are available as: $ARGUMENTS

Versioning

• Maintain plugin versions in plugin.json (Semver)
• On updates: bump version -> Git push -> users run /plugin marketplace update
• Claude Code caches plugins locally under ~/.claude/plugins/cache/

Pre-configuration

Plugins can be pre-configured in Claude Code settings:

// .claude/settings.json (project or user level)
{
  "extraKnownMarketplaces": {
    "javamark-claude-skills": {
      "source": {
        "source": "url",
        "url": "https://github.com/mgoericke/javamark-claude-skills.git"
      }
    }
  },
  "enabledPlugins": {
    "sdd-toolkit@javamark-claude-skills": true,
    "java-scaffold@javamark-claude-skills": true
  }
}

Contributing