Check out the 'Serp API' Branch

https://github.com/mixelpixx/Google-Search-MCP-Server/tree/serpapi-only

Google Research MCP Server

Version 3.0.0 - Enhanced research synthesis with intelligent source quality assessment and deduplication.

An advanced Model Context Protocol (MCP) server that provides comprehensive Google search capabilities, webpage content extraction, and AI-powered research synthesis. Built for Claude Code, Claude Desktop, and other MCP-compatible clients.

Multi-Provider Search Support (v3.0+)

NEW: This server now supports multiple search providers! Choose the best option for your needs.

Brave Search (Recommended)

# Get free API key: https://api.search.brave.com/app/keys
SEARCH_PROVIDER=brave
BRAVE_API_KEY=your_brave_api_key_here

• 2,000 free queries/month (no credit card)
• Privacy-focused, no tracking
• $3/month for 5,000 queries
• No sunset date announced

Tavily Search (For AI Research)

# Get API key: https://app.tavily.com/sign-in
SEARCH_PROVIDER=tavily
TAVILY_API_KEY=your_tavily_api_key_here

• 1,000 free queries/month
• AI-optimized with quality scoring
• Advanced search depth (10-30s per query)
• Best for synthesis and research

Google Custom Search (Legacy)

# Only if you already have an API key
SEARCH_PROVIDER=google
GOOGLE_API_KEY=your_google_api_key_here
GOOGLE_SEARCH_ENGINE_ID=your_search_engine_id_here

• API sunsets January 1, 2027
• Closed to new users (2024)
• Only 100 queries/day free
• Higher costs ($5/1,000 queries)

Migration Guide: See MIGRATION.md for detailed migration instructions.

Google API Status (For Legacy Users)

For New Users

Google has CLOSED the Custom Search JSON API to new customers as of 2026.

If you don't have a Google API key:

• You CANNOT get one anymore
• Use Brave or Tavily instead (see above)
• Both providers work with all MCP tools

For Existing Google Users

Important Dates:

• January 1, 2027: Google Custom Search API sunsets
• Action Required: Migrate to Brave or Tavily (see MIGRATION.md)

Current Limits:

• 100 queries per day FREE
• After 100: $5 per 1,000 queries (max 10k/day)

Monitor Your Usage:

• Dashboard: https://console.cloud.google.com/apis/dashboard
• Enable billing: https://console.cloud.google.com/billing

Quick Troubleshooting

Error: "not working" or "403 Forbidden"

1. Check if you hit the 100/day limit (wait until tomorrow or enable billing)
2. Verify API is enabled: https://console.cloud.google.com/apis/library/customsearch.googleapis.com
3. Check your API key is correct in .env

Error: "429 Too Many Requests"

• You exceeded 100 queries/day
• Wait for midnight UTC reset OR enable billing

Need more than 100/day?

• Enable billing: https://console.cloud.google.com/billing
• Cost: $5 per 1,000 queries

Overview

This MCP server transforms Google search into a powerful research tool by:

• Intelligent Source Ranking - Automatically scores sources by authority, recency, and credibility
• Deduplication - Removes duplicate URLs and similar content across search results
• Agent-Based Synthesis - Leverages your existing Claude session to synthesize research findings
• Focus Area Analysis - Provides dedicated analysis for specific aspects of your research topic
• Quality Metrics - Tracks source diversity, authority, and content freshness

Quick Start

Prerequisites

• Node.js 18 or higher
• Google Cloud Platform account with Custom Search API enabled
• Google Custom Search Engine ID

Installation

Option 1: Using npx (Recommended)

Run directly without cloning:

# Set environment variables and run
GOOGLE_API_KEY=your_key GOOGLE_SEARCH_ENGINE_ID=your_id npx google-search-mcp

Or create a .env file in your working directory with your credentials, then run:

npx google-search-mcp

Option 2: Clone a

... View full README on GitHub