W3Dev Coding Agent - Claude Code Plugin Marketplace

A curated Claude Code plugin marketplace providing essential development tools with MCP servers for documentation lookup and code search, plus LSP support for multiple languages.

Installation

Add Marketplace

/plugin marketplace add w3dev/coding-agent

Install Plugins

# Basic development tools
/plugin install basic-development-plugin@w3dev

# Next.js development toolkit
/plugin install nextjs-devtools-plugin@w3dev

# Expo/React Native development toolkit
/plugin install expo-devtools-plugin@w3dev

# Flutter/Dart development toolkit
/plugin install flutter-devtools-plugin@w3dev

# Cloudflare Workers development toolkit
/plugin install cloudflare-workers-plugin@w3dev

Included Plugins

1. basic-development-plugin

Essential development tools for any project:

MCP Servers

| Server | Description | |--------|-------------| | deepwiki | Ask questions about any GitHub repository | | context7 | Query up-to-date documentation for any library | | exa | Web search and code context retrieval | | grep | Search real-world code examples from public GitHub repos |

LSP Support

| Language | Server | Extensions | |----------|--------|------------| | TypeScript/JavaScript | typescript-language-server | .ts, .tsx, .js, .jsx | | Go | gopls | .go, .mod, .work |

Commands

| Command | Description | |---------|-------------| | /docs | Look up library documentation using Context7 | | /search-code | Find real-world code examples from GitHub |

---

2. nextjs-devtools-plugin

Complete Next.js development toolkit:

MCP Servers

| Server | Description | |--------|-------------| | next-devtools | Official Vercel MCP for Next.js development | | deepwiki | Ask questions about any GitHub repository | | context7 | Query up-to-date documentation for any library | | grep | Search real-world code examples from public GitHub repos |

LSP Support

| Language | Server | Extensions | |----------|--------|------------| | TypeScript/JavaScript | typescript-language-server | .ts, .tsx, .js, .jsx |

Commands

| Command | Description | |---------|-------------| | /nextjs-errors | Check build and runtime errors | | /nextjs-routes | Inspect application routes | | /nextjs-upgrade | Upgrade Next.js version |

Requirements

• Node.js v20.19+
• Next.js 16+ with dev server running

---

3. expo-devtools-plugin

Expo/React Native development toolkit:

MCP Servers

| Server | Description | |--------|-------------| | expo-mcp | Official Expo MCP for documentation and automation | | deepwiki | Ask questions about any GitHub repository | | context7 | Query up-to-date documentation for any library | | grep | Search real-world code examples from public GitHub repos |

LSP Support

| Language | Server | Extensions | |----------|--------|------------| | TypeScript/JavaScript | typescript-language-server | .ts, .tsx, .js, .jsx |

Commands

| Command | Description | |---------|-------------| | /expo-docs | Look up Expo documentation | | /expo-install | Install Expo packages with npx expo install | | /expo-screenshot | Take screenshot of running app |

Requirements

• EAS paid plan (for full Expo MCP features)
• Expo SDK 54+
• Node.js 18+

---

4. flutter-devtools-plugin

Flutter/Dart development toolkit:

MCP Servers

| Server | Description | |--------|-------------| | dart | Official Dart MCP for code analysis and package management | | deepwiki | Ask questions about any GitHub repository | | context7 | Query up-to-date documentation for any library | | grep | Search real-world code examples from public GitHub repos |

LSP Support

| Language | Server | Extensions | |----------|--------|------------| | Dart | dart language-server | .dart |

Commands

| Command | Description | |---------|-------------| | /flutter-analyze | Analyze Flutter/Dart code for issues | | /flutter-test | Run Flutter tests | | /flutter-pub | Search pub.dev and manage dependencies |

Requirements

• Dart SDK 3.9+
• Flutter SDK (latest stable)

---

5. cloudflare-workers-plugin

Cloudflare Workers development toolkit:

MCP Servers

| Server | Description | |--------|-------------| | cf-docs | Cloudflare platform documentation | | cf-bindings | Workers bindings (KV, R2, D1, AI, etc.) | | cf-builds | Workers deployment and build management | | cf-observability | Logs, analytics, and performance monitoring | | deepwiki | Ask questions about any GitHub repository | | context7 | Query up-to-date documentation for any library | | grep | Search real-world code examples from public GitHub repos |

LSP Support

| Language | Server | Extensions | |----------|--------|------------| | TypeScript/JavaScript | typescript-language-server | .ts, .js, .mts, .mjs |

Commands

| Command | Description | |---------|-------------| | /cf-docs | Look up Cloudflare Workers documentation | | /cf-deploy | Deploy Worker to Cloudflare | | /cf-logs | View Worker logs and analytics | | /cf-kv | Manage KV namespace operations |

Capabilities

• Access Cloudflare Workers documentation
• Deploy Workers to edge network
• View real-time logs and analytics
• Manage KV/R2/D1 storage
• Use Workers AI models

Requirements

• Cloudflare account with API token
• Node.js 18+

---

Marketplace-Level Skills

These skills are available at the marketplace level to help with plugin development:

| Skill | Description | |-------|-------------| | plugin-builder | Comprehensive guide for creating Claude Code plugins and marketplaces |

The plugin-builder skill teaches you how to:

• Structure plugins and marketplaces
• Configure MCP and LSP servers
• Create commands and skills
• Follow best practices and naming conventions

---

Project Structure

w3dev-agent/
├── .claude-plugin/
│   └── marketplace.json        # Marketplace registry
├── plugins/
│   ├── basic-development/      # Basic development plugin
│   ├── nextjs-devtools/        # Next.js devtools plugin
│   ├── expo-devtools/          # Expo/React Native plugin
│   ├── flutter-devtools/       # Flutter/Dart plugin
│   └── cloudflare-workers/     # Cloudflare Workers plugin
├── skills/
│   └── plugin-builder/         # Plugin development guide
│       └── SKILL.md
└── README.md

Requirements by Plugin

| Plugin | Runtime | LSP | |--------|---------|-----| | basic-development | Node.js | TypeScript, Go | | nextjs-devtools | Node.js 20.19+ | TypeScript | | expo-devtools | Node.js 18+, EAS paid plan | TypeScript | | flutter-devtools | Dart 3.9+ | Dart | | cloudflare-workers | Node.js 18+ | TypeScript |

LSP Installation

TypeScript/JavaScript:

npm install -g typescript-language-server typescript

Go:

go install golang.org/x/tools/gopls@latest

Dart: (included with Dart SDK 3.9+)

Usage Examples

Basic Development

/docs react useState hook
/search-code "useEffect(" --lang=TypeScript

Next.js Development

/nextjs-errors
/nextjs-routes

Expo/React Native Development

/expo-docs navigation
/expo-install expo-camera

Flutter/Dart Development

/flutter-analyze
/flutter-pub search state management
/flutter-test

Cloudflare Workers Development

/cf-docs workers
/cf-deploy
/cf-logs my-worker --tail
/cf-kv get MY_NAMESPACE my-key

Contributing

1. Fork the repository 2. Read the plugin-builder skill in skills/plugin-builder/SKILL.md for comprehensive guidance 3. Add your plugin to the plugins/ directory following the documented structure 4. Update .claude-plugin/marketplace.json to include your plugin 5. Submit a pull request

License

MIT