Google Knowledge Graph

Overview

Google Knowledge Graph is a Model Context Protocol server that searches Google's Knowledge Graph to retrieve structured information about real-world entities. Any MCP-compatible AI assistant can call its tools directly, letting the model decide when to use entity lookup and search capabilities in conversations or agent workflows.

It runs locally via the npm package @houtini/google-knowledge-graph-mcp, communicating over stdio. You'll need to set the GOOGLE_KNOWLEDGE_GRAPH_API_KEY environment variable to authenticate with Google's API. The latest release is v1.0.7, distributed under the MIT license with source code available at houtini-ai/google-knowledge-graph-mcp on GitHub.

Google Knowledge Graph appears in the Memory category on mcp.site and integrates with all MCP clients including Claude Desktop, Claude Code, Cursor, VS Code, Windsurf, Zed, and others. Maintainers at houtini-ai can claim this listing to verify ownership and keep information up to date.

Installation

// claude_desktop_config.json
{
  "mcpServers": {
    "google_knowledge_graph": {
      "command": "npx",
      "args": [
        "-y",
        "@houtini/google-knowledge-graph-mcp"
      ],
      "env": {
        "GOOGLE_KNOWLEDGE_GRAPH_API_KEY": "<google-knowledge-graph-api-key>"
      }
    }
  }
}

Requires GOOGLE_KNOWLEDGE_GRAPH_API_KEY