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