MCPProxy Frontend

A modern Vue 3 + TypeScript control panel for MCPProxy with DaisyUI styling and real-time updates.

🚀 Features

• Modern Stack: Vue 3 with Composition API, TypeScript, and Vite
• Beautiful UI: DaisyUI components with TailwindCSS styling
• Real-time Updates: Server-Sent Events (SSE) for live status updates
• Responsive Design: Mobile-friendly interface
• Type Safety: Full TypeScript support with comprehensive type definitions
• Testing: Vitest with Vue Test Utils for component and unit testing
• Development: Hot reload with Vite development server

📁 Project Structure

frontend/
├── public/                 # Static assets
├── src/
│   ├── components/        # Reusable Vue components
│   │   ├── ServerCard.vue # Server status card
│   │   └── ToastContainer.vue # Toast notifications
│   ├── services/         # API service layer
│   │   └── api.ts       # HTTP client for backend communication
│   ├── stores/          # Pinia state management
│   │   ├── servers.ts   # Server management state
│   │   ├── system.ts    # System-wide state and notifications
│   │   └── tools.ts     # Tool search and management
│   ├── types/           # TypeScript type definitions
│   │   ├── api.ts       # API response types
│   │   └── index.ts     # Shared types
│   ├── views/           # Page components
│   │   ├── Dashboard.vue # Main dashboard
│   │   ├── Servers.vue  # Server management
│   │   ├── Tools.vue    # Tool discovery
│   │   ├── Search.vue   # Tool search
│   │   └── Settings.vue # Configuration
│   ├── App.vue          # Root component
│   ├── main.ts          # Application entry point
│   └── router.ts        # Vue Router configuration
├── package.json         # Dependencies and scripts
├── vite.config.ts      # Vite build configuration
├── vitest.config.ts    # Testing configuration
├── eslint.config.js    # ESLint configuration
├── tailwind.config.cjs # TailwindCSS + DaisyUI config
└── README.md           # This file

🛠️ Development Setup

Prerequisites

• Node.js 20+
• npm or pnpm

Installation

# Install dependencies
npm install

# Start development server
npm run dev

The development server will start at http://localhost:3000 with hot reload enabled.

📜 Available Scripts

# Development
npm run dev              # Start Vite dev server with hot reload
npm run build           # Build for production
npm run preview         # Preview production build locally

# Code Quality
npm run type-check      # TypeScript type checking
npm run lint            # ESLint with auto-fix
npm run lint --fix      # Fix ESLint issues automatically

# Testing
npm run test            # Run tests with Vitest
npm run test:ui         # Run tests with Vitest UI
npm run coverage        # Generate test coverage report

🔧 Build Integration

The frontend integrates with the Go backend build system via the root Makefile:

# Development workflow
make backend-dev        # Build backend in development mode
make frontend-dev       # Start frontend dev server

# Production build
make build             # Build both frontend and backend
make frontend-build    # Build frontend only

Build Modes

1. Development Mode (make backend-dev):

   • Go backend serves files from frontend/dist/
   • Frontend runs on :3000 with hot reload
   • API requests proxy to backend on :8080

2. Production Mode (make build):

   • Frontend built and embedded into Go binary
   • Single binary serves both API and UI
   • Accessed via /ui/ route

🎨 UI Components

ServerCard

Displays server status with actions:

• Status indicators: Connected, disconnected, quarantined
• Protocol badges: HTTP, stdio, streamable-http
• Action buttons: Enable/disable, restart, OAuth login
• Tool count: Number of available tools

ToastContainer

Global notification system:

• Success notifications: Green with checkmark
• Error notifications: Red with X icon
• Info notifications: Blue with info icon
• Auto-dismiss: Configurable timeout

SidebarNav

Application navigation (Home, Connect, Protect, Monitor groups):

• Active route highlighting
• Responsive mobile menu

🗄️ State Management

Pinia Stores

servers.ts - Server Management:

const serversStore = useServersStore()
await serversStore.fetchServers()
serversStore.enableServer('server-name')

tools.ts - Tool Discovery:

const toolsStore = useToolsStore()
await toolsStore.searchTools('create issue')

system.ts - Global State:

const systemStore = useSystemStore()
systemStore.showToast('Success!', 'success')

🔌 API Integration

Service Layer

The api.ts service provides typed methods for backend communication:

import apiService from '@/services/api'

// Get all servers
const response = await apiService.getServers()
if (response.success) {
  console.log(response.data.servers)
}

// Search tools
const results = await apiService.searchTools('github', 5)

Real-time Updates

Server-Sent Events provide live updates:

// Auto-reconnecting SSE client
const eventSource = apiService.subscribeToEvents((event) => {
  if (event.type === 'server_status') {
    serversStore.updateServerStatus(event.data)
  }
})

🧪 Testing

Component Testing

import { mount } from '@vue/test-utils'
import { createPinia } from 'pinia'
import ServerCard from '@/components/ServerCard.vue'

test('displays server info', () => {
  const wrapper = mount(ServerCard, {
    props: { server: mockServer },
    global: { plugins: [createPinia()] }
  })
  expect(wrapper.text()).toContain('Connected')
})

Service Testing

import { vi } from 'vitest'
import apiService from '@/services/api'

test('makes API request', async () => {
  global.fetch = vi.fn().mockResolvedValue({
    ok: true,
    json: () => ({ success: true, data: [] })
  })

  const result = await apiService.getServers()
  expect(result.success).toBe(true)
})

🎯 Type Safety

API Response Types

interface APIResponse<T> {
  success: boolean
  data?: T
  error?: string
}

interface Server {
  name: string
  protocol: 'http' | 'stdio' | 'streamable-http'
  enabled: boolean
  connected: boolean
  tool_count: number
  url?: string
}

Component Props

interface ServerCardProps {
  server: Server
  showActions?: boolean
}

🚀 Production Deployment

The frontend is embedded into the Go binary during production builds:

1. Frontend Build: npm run build creates optimized bundles in dist/
2. Copy Assets: Build process copies dist/ to web/frontend/dist/
3. Go Embed: //go:embed all:frontend/dist includes files in binary
4. Serve: Backend serves frontend from /ui/ route

Environment Variables

Development:

• VITE_API_BASE_URL: Backend API URL (default: http://localhost:8080)

Production:

• API calls use relative URLs (same origin as frontend)

🔧 Configuration Files

vite.config.ts

• Vue plugin setup
• Development proxy configuration
• Build optimization settings

tailwind.config.cjs

• DaisyUI theme configuration
• Custom color schemes
• Component customizations

vitest.config.ts

• Test environment setup (jsdom)
• Coverage configuration
• Path aliases

📚 Key Dependencies

Core Framework

• Vue 3: Composition API, reactivity, components
• TypeScript: Type safety and developer experience
• Vite: Fast dev server and optimized builds

UI & Styling

• DaisyUI: Pre-built component library
• TailwindCSS: Utility-first CSS framework
• Heroicons: SVG icon library

State & Routing

• Pinia: Vue store with TypeScript support
• Vue Router: Client-side routing

Testing & Quality

• Vitest: Fast unit testing framework
• Vue Test Utils: Vue component testing utilities
• ESLint: Code linting and formatting

🤝 Contributing

1. Component Development: Create reusable components in src/components/
2. Type Definitions: Add new types to src/types/
3. API Integration: Extend src/services/api.ts for new endpoints
4. Testing: Add tests alongside components in __tests__/ directories
5. Documentation: Update this README for new features

Code Style

• Use Composition API over Options API
• Prefer <script setup> syntax
• Add TypeScript types for all props and emits
• Follow Vue 3 style guide conventions
• Write tests for new components and services

Pull Request Checklist

• Tests pass (npm run test)
• TypeScript compiles (npm run type-check)
• Linting passes (npm run lint)
• Build succeeds (npm run build)
• Components are responsive
• Accessibility considered (ARIA labels, keyboard navigation)

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For backend integration details, see the main project README.md and CLAUDE.md.