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Implementation Summary

Overview

This repository now contains a complete implementation of a Brave Search MCP (Model Context Protocol) Server, enabling AI applications and agents to perform privacy-focused web searches through a standardized interface.

What Was Implemented

Core Components

  1. TypeScript Project Setup

    • package.json with all required dependencies
    • tsconfig.json with strict type checking
    • .gitignore for Node.js/TypeScript projects
    • .env.example for configuration

  2. MCP Server Implementation

    • Main server in src/index.ts using @modelcontextprotocol/sdk
    • Configuration management in src/config.ts
    • Brave API client in src/brave-api.ts

  3. Search Tools (in src/tools/)

    • web-search.ts - General web search
    • local-search.ts - Local business search
    • image-search.ts - Image search
    • video-search.ts - Video search
    • news-search.ts - News article search
    • summarizer.ts - AI-powered summarization

Features

  • ✅ STDIO transport protocol support
  • ✅ Environment-based configuration
  • ✅ Zod schema validation for all inputs
  • ✅ Type-safe TypeScript implementation
  • ✅ Proper error handling
  • ✅ Formatted markdown output for search results
  • ✅ Support for all major Brave Search API endpoints

Quality Assurance

  • ✅ Code compiles without errors
  • ✅ CodeQL security scan passed (0 alerts)
  • ✅ Code review completed and issues addressed
  • ✅ Magic numbers extracted to constants
  • ✅ Undefined value handling implemented
  • ✅ No hardcoded secrets

Documentation

  • ✅ Comprehensive README with setup instructions
  • ✅ Tool usage examples
  • ✅ Integration guide for Claude Desktop
  • ✅ Contributing guidelines
  • ✅ MIT License

How to Use

  1. Setup

    npm install
cp .env.example .env
# Add your BRAVE_API_KEY to .env
npm run build

  2. Run

    npm start  # Production
npm run dev  # Development

  3. Integrate with Claude Desktop Add to claude_desktop_config.json:

    {
  "mcpServers": {
    "brave-search": {
      "command": "node",
      "args": ["/path/to/Prime-security/dist/index.js"],
      "env": {
        "BRAVE_API_KEY": "your_api_key_here"
      }
    }
  }
}

Architecture

┌─────────────────┐
│   MCP Client    │
│ (Claude, etc.)  │
└────────┬────────┘
         │ STDIO
         │
┌────────▼────────┐
│   MCP Server    │
│  (index.ts)     │
├─────────────────┤
│  Tool Registry  │
├─────────────────┤
│  Brave API      │
│  Client         │
└────────┬────────┘
         │ HTTPS
         │
┌────────▼────────┐
│  Brave Search   │
│     API         │
└─────────────────┘

Security Considerations

  1. API Key Protection

    • API key stored in environment variables
    • .env file excluded from git
    • Example file provided without real credentials

  2. Input Validation

    • All user inputs validated with Zod schemas
    • Type constraints enforced at runtime
    • No direct string concatenation for API calls

  3. Error Handling

    • API errors caught and wrapped
    • No sensitive data in error messages
    • Proper error propagation to MCP client

  4. Type Safety

    • Strict TypeScript configuration
    • Runtime validation with Zod
    • No unsafe type assertions

Known Limitations

  1. HTTP Transport: Not yet implemented (STDIO only)
  2. Type Definitions: Using any for Brave API responses (common for third-party APIs)
  3. Testing: No unit tests yet (can be added in future iterations)
  4. Caching: No result caching (direct API calls for every request)

Future Enhancements

  • Add HTTP transport support
  • Implement response caching
  • Add comprehensive unit tests
  • Create TypeScript interfaces for Brave API responses
  • Add rate limiting protection
  • Implement request retry logic
  • Add telemetry and logging options

Dependencies

Runtime

  • @modelcontextprotocol/sdk: ^1.0.4
  • dotenv: ^16.4.7
  • zod: ^3.24.1

Development

  • @types/node: ^22.10.2
  • tsx: ^4.19.2
  • typescript: ^5.7.2

License

MIT License - See LICENSE file for details