Create Your Own Plugin Marketplace for Claude Code 🚀

February 03, 2026 ¿Ves algún error? Corregir artículo Claude Code Plugin Marketplace

Claude Code has revolutionized how we interact with AI in software development. But did you know you can create your own plugin marketplace to extend Claude's capabilities with custom skills, agents, and tools? In this guide, I'll show you how I built my own plugin marketplace and how you can do the same.

What is a Plugin Marketplace? 🤔

A plugin marketplace is a centralized catalog that distributes Claude Code extensions across teams and communities. Think of it as an app store for Claude Code, where you can:

Share custom skills that automate repetitive tasks
Distribute specialized agents for specific development workflows
Package MCP servers for external tool integration
Version control your extensions for easy updates

Why Create Your Own Marketplace?

Before diving into the technical details, let me share why I created my own marketplace:

For Personal Projects

Consistency: Reuse the same development patterns across all projects
Efficiency: One-command scaffolding for common tasks
Best Practices: Enforce your own coding standards automatically

For Teams

Onboarding: New team members get instant access to team conventions
Standardization: Everyone uses the same architecture patterns
Knowledge Sharing: Capture tribal knowledge in executable form

For Open Source

Community Building: Share your development workflows with others
Documentation: Plugins serve as living documentation
Contribution: Make it easier for others to contribute to your projects

My Plugin Marketplace 📦

I recently launched my own marketplace at github.com/solrac97gr/marketplace-plugins, which includes three powerful plugins:

1. go-dev: Backend Development Toolkit

A comprehensive toolkit for Go development with enterprise-grade architecture patterns.

Features:

7 production-ready skills for project scaffolding
9 AI agents for architecture review and quality assurance
1 Go MCP server for real-time architecture testing
Support for hexagonal architecture, DDD, and TDD with Godog BDD

~
# Initialize a new Go project with hexagonal architecture
/go-dev:start-project ecommerce-api

# Create a new feature following TDD
/go-dev:new-feature user-authentication

# Generate a domain entity with repository interface
/go-dev:new-entity Product

# Review code for architecture compliance
/go-dev:review-arch

2. react-dev: Frontend Development Suite

Modern React development toolkit with emphasis on quality, accessibility, and performance.

Features:

10 production-ready skills for React workflows
10 specialized agents (security, performance, accessibility)
1 Go MCP server for component analysis
Vite, TypeScript, Tailwind CSS, Vitest, and Storybook integration

~
# Start a new React project with best practices
/react-dev:start-project my-dashboard

# Create a component with tests and Storybook
/react-dev:new-component UserProfile

# Create a custom hook with comprehensive tests
/react-dev:new-hook useAuth

# Review accessibility compliance
/react-dev:review-a11y

3. plugin-helper: The Meta Plugin

This is my favorite - a plugin that generates plugins! It analyzes your codebase to identify patterns and creates custom plugins tailored to your project.

Features:

Language-agnostic pattern recognition
Automatic generation of skills, agents, hooks, and MCP servers
Project-specific documentation creation
Template extraction from existing code

~
# Analyze your project for automation opportunities
/plugin-helper:analyze-project

# Generate a custom plugin based on your patterns
/plugin-helper:generate-plugin

How to Create Your Own Marketplace 🛠️

Let me walk you through creating a plugin marketplace step by step.

Step 1: Understand the Structure

A marketplace is essentially a Git repository with a specific structure:

~
my-marketplace/
├── .claude-plugin/
│   └── marketplace.json      # Marketplace manifest
└── plugins/
  ├── plugin-one/
  │   ├── .claude-plugin/
  │   │   └── plugin.json   # Plugin manifest
  │   ├── skills/           # User-invoked commands
  │   ├── agents/           # Specialized AI agents
  │   ├── hooks/            # Event handlers
  │   └── .mcp.json         # MCP server configs
  └── plugin-two/
      └── ...

Step 2: Create the Marketplace Manifest

The marketplace.json file defines your marketplace identity and lists available plugins.

.claude-plugin/marketplace.json
{
"name": "my-plugins",
"owner": {
  "name": "Your Name",
  "email": "your@email.com"
},
"metadata": {
  "description": "My custom Claude Code plugins",
  "version": "1.0.0"
},
"plugins": [
  {
    "name": "my-first-plugin",
    "source": "./plugins/my-first-plugin",
    "description": "A helpful plugin for my workflow",
    "version": "1.0.0",
    "author": {
      "name": "Your Name"
    }
  }
]
}

Step 3: Create Your First Plugin

Let's create a simple plugin with a custom skill:

~
# Create plugin structure
mkdir -p plugins/code-reviewer/.claude-plugin
mkdir -p plugins/code-reviewer/skills/review

# Create plugin manifest
cat > plugins/code-reviewer/.claude-plugin/plugin.json << 'EOF'
{
"name": "code-reviewer",
"description": "AI-powered code review assistant",
"version": "1.0.0"
}
EOF

# Create a skill
cat > plugins/code-reviewer/skills/review/SKILL.md << 'EOF'
---
description: Review code for bugs, security, and best practices
disable-model-invocation: true
---

Review the selected code or recent changes for:
- Potential bugs or edge cases
- Security vulnerabilities
- Performance issues
- Code style and readability
- Best practices violations

Provide specific, actionable feedback.
EOF

Step 4: Add Advanced Features

Custom Agents

Agents are specialized AI assistants that work autonomously. Here's an example:

plugins/code-reviewer/agents/security-reviewer.md
---
name: Security Reviewer
description: Specialized agent for security vulnerability analysis
---

You are a security expert specialized in identifying vulnerabilities.

When reviewing code:
1. Check for OWASP Top 10 vulnerabilities
2. Identify input validation issues
3. Look for authentication/authorization flaws
4. Check for sensitive data exposure
5. Verify secure communication practices

Provide a security score (1-10) and detailed findings.

MCP Servers

MCP (Model Context Protocol) servers give Claude access to external tools. Here's how to configure one:

plugins/code-reviewer/.mcp.json
{
"security-scanner": {
  "command": "${CLAUDE_PLUGIN_ROOT}/servers/security-scanner",
  "args": ["--config", "${CLAUDE_PLUGIN_ROOT}/config.json"],
  "env": {
    "SCANNER_MODE": "strict"
  }
}
}

Hooks

Hooks let you run code in response to events. Example:

plugins/code-reviewer/hooks/hooks.json
{
"hooks": {
  "PostToolUse": [
    {
      "matcher": "Write|Edit",
      "hooks": [
        {
          "type": "command",
          "command": "jq -r '.tool_input.file_path' | xargs eslint --fix"
        }
      ]
    }
  ]
}
}

Step 5: Test Locally

Before publishing, test your marketplace locally:

~
# Load the marketplace
claude --plugin-dir ./my-marketplace

# Or within Claude Code
/plugin marketplace add ./my-marketplace

# Install your plugin
/plugin install code-reviewer@my-plugins

# Try your skill
/code-reviewer:review

Step 6: Publish to GitHub

Once tested, publish your marketplace:

~
# Initialize git repository
git init
git add .
git commit -m "Initial marketplace release"

# Create GitHub repository and push
gh repo create my-claude-plugins --public
git remote add origin https://github.com/yourusername/my-claude-plugins.git
git push -u origin main

# Tag a release
git tag v1.0.0
git push origin v1.0.0

Step 7: Share with Others

Users can now install your marketplace:

~
# Add marketplace by GitHub repo
/plugin marketplace add yourusername/my-claude-plugins

# Install specific plugins
/plugin install code-reviewer@my-plugins

# Update marketplace
/plugin marketplace update my-plugins

Best Practices 💡

1. Version Your Plugins

Use semantic versioning for clear update management:

~
{
"name": "my-plugin",
"version": "1.2.3"
// Major.Minor.Patch
// 1: Breaking changes
// 2: New features
// 3: Bug fixes
}

2. Provide Clear Documentation

Each plugin should have a comprehensive README:

plugins/my-plugin/README.md
# My Plugin

## Description
What this plugin does and why it's useful.

## Installation
```bash
/plugin marketplace add owner/repo
/plugin install my-plugin@marketplace-name
```

## Skills
- `/my-plugin:skill1` - Description
- `/my-plugin:skill2` - Description

## Examples
Concrete usage examples...

3. Keep Plugins Focused

Each plugin should solve one problem well:

# ❌ Bad: Monolithic Plugin

my-mega-plugin/
├── frontend/
├── backend/
├── database/
├── testing/
├── deployment/
└── docs/

**Problem:**
- Hard to maintain
- Users install unnecessary features
- Difficult to version

# ✅ Good: Focused Plugins

marketplace/
├── frontend-plugin/
├── backend-plugin/
├── db-plugin/
├── testing-plugin/
└── deploy-plugin/

**Benefits:**
- Easy to maintain
- Users pick what they need
- Independent versioning

4. Use Plugin Variables

Leverage ${CLAUDE_PLUGIN_ROOT} for portable paths:

~
{
"mcpServers": {
  "my-server": {
    "command": "${CLAUDE_PLUGIN_ROOT}/bin/server",
    "args": ["--config", "${CLAUDE_PLUGIN_ROOT}/config.json"]
  }
}
}

5. Test Across Projects

Test your marketplace in different project types:

~
# Test in a Go project
cd ~/projects/go-api
claude --plugin-dir ~/my-marketplace

# Test in a React project
cd ~/projects/react-app
claude --plugin-dir ~/my-marketplace

# Test in a monorepo
cd ~/projects/monorepo
claude --plugin-dir ~/my-marketplace

Real-World Use Cases 🎯

Enterprise Team Marketplace

.claude-plugin/marketplace.json
{
"name": "acme-dev-tools",
"plugins": [
  {
    "name": "acme-api-generator",
    "description": "Generate APIs following ACME standards"
  },
  {
    "name": "acme-security-scanner",
    "description": "Security scanning with company policies"
  },
  {
    "name": "acme-deployment",
    "description": "Deploy to ACME infrastructure"
  }
]
}

Open Source Project

.claude-plugin/marketplace.json
{
"name": "myproject-contrib",
"plugins": [
  {
    "name": "contribution-guide",
    "description": "Help contributors follow project conventions"
  },
  {
    "name": "pr-reviewer",
    "description": "Automated PR review against guidelines"
  }
]
}

Advanced Features 🚀

Private Marketplaces

For internal use, configure authentication:

~
# Set GitHub token for private repos
export GITHUB_TOKEN=ghp_your_token_here

# Add private marketplace
/plugin marketplace add private-org/internal-plugins

Marketplace Restrictions

Organizations can enforce approved marketplaces:

managed-settings.json
{
"strictKnownMarketplaces": [
  {
    "source": "github",
    "repo": "acme-corp/approved-plugins"
  },
  {
    "source": "hostPattern",
    "hostPattern": "^github\\.acme\\.com$"
  }
]
}

My Marketplace Statistics 📊

After launching my marketplace, here are some insights:

3 plugins with complementary purposes
19 skills covering Go, React, and plugin generation
20 specialized agents for quality assurance
~30,000 lines of production-ready code
2 MCP servers for real-time analysis

The plugin-helper meta plugin has been particularly useful - it has helped me generate custom plugins for several of my projects, extracting patterns I was following manually.

The Power of Plugin-Helper 🎨

Let me highlight the plugin-helper because it's a game-changer for creating custom plugins:

How It Works

Analyze Phase: Scans your codebase to identify patterns

~
/plugin-helper:analyze-project

# Output:
# ✓ Found 15 recurring patterns
# ✓ Identified 8 manual workflows
# ✓ Detected 12 code templates
# ✓ Analyzed 5 testing patterns

Generation Phase: Creates a complete plugin

~
/plugin-helper:generate-plugin

# Generates:
# - Custom skills for your workflows
# - Agents following your patterns
# - Hooks for your conventions
# - MCP servers for your tools
# - Complete documentation

Real Example

I used plugin-helper on one of my microservices projects:

Input: Codebase with consistent API patterns Output: A plugin with skills like:

/myservice:new-endpoint - Generate REST endpoints
/myservice:add-middleware - Add auth/logging middleware
/myservice:create-test - Generate integration tests

This saved me hours of repetitive coding!

Troubleshooting Common Issues 🔧

Plugin Not Loading

~
# Validate marketplace structure
claude plugin validate .

# Check plugin.json syntax
cat .claude-plugin/plugin.json | jq .

# Verify file permissions
chmod +x hooks/*.sh
chmod +x servers/*

Skills Not Appearing

~
# Ensure SKILL.md has proper frontmatter
head -n 5 skills/my-skill/SKILL.md

# Should show:
# ---
# description: Skill description here
# ---

# Restart Claude Code
/restart

MCP Server Fails

~
# Test server independently
./servers/my-server --help

# Check server logs
tail -f ~/.config/claude/logs/mcp-*.log

# Verify environment variables
echo $CLAUDE_PLUGIN_ROOT

Resources and Next Steps 📚

Explore My Marketplace

Check out my marketplace for inspiration:

Repository: solrac97gr/marketplace-plugins
Documentation: Each plugin has detailed README with examples
Examples: Real-world usage in production projects

Official Documentation

Installation

~
# Add my marketplace
/plugin marketplace add solrac97gr/marketplace-plugins

# Install plugins
/plugin install go-dev@marketplace-plugins
/plugin install react-dev@marketplace-plugins
/plugin install plugin-helper@marketplace-plugins

Conclusion 🎉

Creating your own plugin marketplace is one of the best ways to:

Amplify your productivity by automating repetitive tasks
Share knowledge with your team or the community
Enforce best practices automatically
Build a library of reusable development workflows

The plugin-helper meta plugin is especially powerful - it can analyze any codebase and generate custom plugins tailored to your specific patterns. This means you can capture and share your development wisdom without manually creating each plugin.

Start small with one or two plugins that solve your most common pain points, then grow your marketplace as you identify more patterns worth automating.

If you create your own marketplace, I'd love to hear about it! Share your repository in the comments or reach out to me.

Happy plugin building! 🚀

Check out my plugin marketplace on GitHub