MCP Deep Web Research Server (v0.3.0)

A Model Context Protocol (MCP) server for advanced web research.

Latest Changes

• Added visit_page tool for direct webpage content extraction
• Optimized performance to work within MCP timeout limits
• Reduced default maxDepth and maxBranching parameters
• Improved page loading efficiency
• Added timeout checks throughout the process
• Enhanced error handling for timeouts

This project is a fork of mcp-webresearch by mzxrai, enhanced with additional features for deep web research capabilities. We're grateful to the original creators for their foundational work.

Bring real-time info into Claude with intelligent search queuing, enhanced content extraction, and deep research capabilities.

Features

• Intelligent Search Queue System
• Batch search operations with rate limiting
• Queue management with progress tracking
• Error recovery and automatic retries
• Search result deduplication

• Enhanced Content Extraction
• TF-IDF based relevance scoring
• Keyword proximity analysis
• Content section weighting
• Readability scoring
• Improved HTML structure parsing
• Structured data extraction
• Better content cleaning and formatting

• Core Features
• Google search integration
• Webpage content extraction
• Research session tracking
• Markdown conversion with improved formatting

Prerequisites

• Node.js >= 18 (includes npm and npx)
• Claude Desktop app

Installation

Global Installation (Recommended)

# Install globally using npm
npm install -g mcp-deepwebresearch

# Or using yarn
yarn global add mcp-deepwebresearch

# Or using pnpm
pnpm add -g mcp-deepwebresearch

Local Project Installation

# Using npm
npm install mcp-deepwebresearch

# Using yarn
yarn add mcp-deepwebresearch

# Using pnpm
pnpm add mcp-deepwebresearch

Claude Desktop Integration

After installing the package, add this entry to your claude_desktop_config.json:

Windows

{
  "mcpServers": {
    "deepwebresearch": {
      "command": "mcp-deepwebresearch",
      "args": []
    }
  }
}

Location: %APPDATA%\Claude\claude_desktop_config.json

macOS

{
  "mcpServers": {
    "deepwebresearch": {
      "command": "mcp-deepwebresearch",
      "args": []
    }
  }
}

Location: ~/Library/Application Support/Claude/claude_desktop_config.json

This config allows Claude Desktop to automatically start the web research MCP server when needed.

First-time Setup

After installation, run this command to install required browser dependencies:

npx playwright install chromium

Usage

Simply start a chat with Claude and send a prompt that would benefit from web research. If you'd like a prebuilt prompt customized for deeper web research, you can use the agentic-research prompt that we provide through this package. Access that prompt in Claude Desktop by clicking the Paperclip icon in the chat input and then selecting Choose an integration → deepwebresearch → agentic-research.

Tools

1. deep_research

• Performs comprehensive research with content analysis
• Arguments:

{
       topic: string;
       maxDepth?: number;      // default: 2
       maxBranching?: number;  // default: 3
       timeout?: number;       // default: 55000 (55 seconds)
       minRelevanceScore?: number;  // default: 0.7
     }

• Returns:

{
       findings: {
         mainTopics: Array;
         keyInsights: Array;
         sources: Array;
       };
       progress: {
         completedSteps: number;
         totalSteps: number;
         processedUrls: number;
       };
       timing: {
         started: string;
         completed?: string;
         duration?: number;
         operations?: {
           parallelSearch?: number;
           deduplication?: number;
           topResultsProcessing?: number;
           remainingResultsProcessing?: number;
           total?: number;
         };
       };
     }

2. parallel_search

• Performs multiple Google searches in parallel with intelligent queuing
• Arguments: { queries: string[], maxParallel?: number }
• Note: maxParallel is limited to 5 to ensure reliable performance

3. visit_page

• Visit a webpage and extract its content
• Arguments: { url: string }
• Returns:

{
       url: string;
       title: string;
       content: string;  // Markdown formatted content
     }

Prompts

agentic-research

A guided research prompt that helps Claude conduct thorough web research. The prompt instructs Claude to:

• Start with broad searches to understand the topic landscape
• Prioritize high-quality, authoritative sources
• Iteratively refine the research direction based on findings
• Keep you informed and let you guide the research interactively
• Always cite sources with URLs

Configuration Options

The server can be configured through environment variables:

• MAX_PARALLEL_SEARCHES: Maximum number of concurrent searches (default: 5)
• SEARCH_DELAY_MS: Delay between searches in milliseconds (default: 200)
• MAX_RETRIES: Number of retry attempts for failed requests (default: 3)
• TIMEOUT_MS: Request timeout in milliseconds (default: 55000)
• LOG_LEVEL: Logging level (default: 'info')

Error Handling

Common Issues

1. Rate Limiting

• Symptom: "Too many requests" error
• Solution: Increase SEARCH_DELAY_MS or decrease MAX_PARALLEL_SEARCHES

2. Network Timeouts

• Symptom: "Request timed out" error
• Solution: Ensure requests complete within the 60-second MCP timeout

3. Browser Issues

• Symptom: "Browser failed to launch" error
• Solution: Ensure Playwright is properly installed (npx playwright install)

Debugging

This is beta software. If you run into issues:

1. Check Claude Desktop's MCP logs:

# On macOS
   tail -n 20 -f ~/Library/Logs/Claude/mcp*.log
   
   # On Windows
   Get-Content -Path "$env:APPDATA\Claude\logs\mcp*.log" -Tail 20 -Wait

2. Enable debug logging:

export LOG_LEVEL=debug

Development

Setup

# Install dependencies
pnpm install

# Build the project
pnpm build

# Watch for changes
pnpm watch

# Run in development mode
pnpm dev

Testing

# Run all tests
pnpm test

# Run tests in watch mode
pnpm test:watch

# Run tests with coverage
pnpm test:coverage

Code Quality

# Run linter
pnpm lint

# Fix linting issues
pnpm lint:fix

# Type check
pnpm type-check

Contributing

1. Fork the repository

2. Create your feature branch (git checkout -b feature/amazing-feature)

3. Commit your changes (git commit -m 'Add some amazing feature')

4. Push to the branch (git push origin feature/amazing-feature)

5. Open a Pull Request

Coding Standards

• Follow TypeScript best practices
• Maintain test coverage above 80%
• Document new features and APIs
• Update CHANGELOG.md for significant changes
• Follow semantic versioning

Performance Considerations

• Use batch operations where possible
• Implement proper error handling and retries
• Consider memory usage with large datasets
• Cache results when appropriate
• Use streaming for large content

Requirements

• Node.js >= 18
• Playwright (automatically installed as a dependency)

Verified Platforms

• [x] macOS
• [x] Windows
• [ ] Linux

License

MIT

Credits

This project builds upon the excellent work of mcp-webresearch by mzxrai. The original codebase provided the foundation for our enhanced features and capabilities.

Author

qpd-v