How do I install Fact MCP Tool MCP Server?

Follow the setup instructions on the Fact MCP Tool GitHub repository, then add the server configuration to your AI client.

What category is Fact MCP Tool MCP Server?

Fact MCP Tool is categorized under Knowledge & Memory. Browse more servers in these categories on MCPgee.

Fact MCP Tool

Name: Fact Mcp Tool MCP Server
Author: geno543

v1.0.0•Knowledge & Memory•stable

MCP server for fact mcp tool

fact-mcp-toolmcpai-integration

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What is Fact MCP Tool?

Fact MCP Tool is a Model Context Protocol (MCP) server that allows AI assistants like Claude, Cursor, and VS Code to mcp server for fact mcp tool

MCP server for fact mcp tool

This server falls under the Knowledge & Memory category on MCPgee, the world's largest MCP server directory with 33,000+ servers.

Features

MCP server for fact mcp tool

Use Cases

Access fact checking service

geno543

Maintainer

LicenseMIT

Languagepython

Versionv1.0.0

UpdatedApr 2, 2026

Statushealthy

Maintenanceactive

Works with

ClaudeOpenAIwindowsmacoslinux

View Source Browse All Servers

Installation

Manual Installation

npx fact-mcp-tool

Configuration

Configuration Details

Config File

claude_desktop_config.json

Performance

Response Metrics

Response Time< 200ms

ThroughputMedium

Resource Usage

Memory UsageLow

CPU UsageLow

How to Set Up and Use Fact MCP Tool

Fact MCP Tool (FactCheckr) is a Python-based MCP server that provides AI-powered fact-checking capabilities to LLM agents. It exposes a fact-checking tool that accepts a claim, runs it through an AI model, and returns a verdict, confidence score, and supporting evidence — enabling agents to verify statements before presenting them to users.

Prerequisites

Python 3.8 or newer
pip package manager
An MCP-compatible AI client such as Claude Desktop or Claude Code
Internet access for AI-powered claim verification

Install FactCheckr from PyPI

Install the factcheckr package globally or in a virtual environment. This installs both the CLI tool and the MCP server.

pip install factcheckr

Verify the installation

Confirm the package installed correctly by checking the version and running a quick fact-check from the command line.

factcheckr --version
factcheckr "The Earth orbits the Sun"

Test JSON output mode

The MCP server returns structured JSON results. Test this mode to confirm the output format before connecting an AI client.

factcheckr "Water boils at 100 degrees Celsius" --json

Clone the repository and start the MCP server

Clone the repository to access the MCP server entry point and start it so your AI client can connect.

git clone https://github.com/geno543/fact_MCP_tool.git
cd fact_MCP_tool
pip install -r requirements.txt
python server.py

Add the server to your MCP client config

Fact MCP Tool Examples

Client configuration

Claude Desktop configuration that starts the FactCheckr MCP server using Python directly from the cloned repository.

{
  "mcpServers": {
    "fact-mcp-tool": {
      "command": "python",
      "args": ["/path/to/fact_MCP_tool/server.py"]
    }
  }
}

Prompts to try

Use these prompts to have your AI agent fact-check claims through the MCP server.

- "Use the fact checker to verify: 'The Great Wall of China is visible from space'"
- "Fact-check this claim and give me the confidence score: 'Lightning never strikes the same place twice'"
- "Check whether it's true that humans only use 10% of their brain"
- "Verify this statement and return JSON output: 'Diamonds are the hardest natural material'"

Troubleshooting Fact MCP Tool

factcheckr command not found after pip install

The pip scripts directory may not be in your PATH. Run python -m factcheckr instead, or add the pip scripts directory to your PATH. On macOS/Linux this is typically ~/.local/bin; on Windows it is %APPDATA%\Python\Scripts.

Fact-check returns low confidence or incorrect verdicts

The tool uses AI models that may not have up-to-date information. For time-sensitive claims, use the --verbose flag to inspect the evidence returned. The fallback system handles common well-known facts when AI is unavailable.

MCP server fails to start from the cloned repository

Ensure all dependencies are installed with pip install -r requirements.txt. If server.py is not found, check the repository structure — the entry point file may be named differently. Check the repository's README for the exact command.

Frequently Asked Questions about Fact MCP Tool

What is Fact MCP Tool?

Fact MCP Tool is a Model Context Protocol (MCP) server that mcp server for fact mcp tool It connects AI assistants to external tools and data sources through a standardized interface.

How do I install Fact MCP Tool?

Follow the installation instructions on the Fact MCP Tool GitHub repository. Clone the repo, install dependencies, and add the server config to your AI client.

Which AI clients work with Fact MCP Tool?

Fact MCP Tool works with all major MCP-compatible AI clients including Claude Desktop, Claude Code, Cursor, VS Code (GitHub Copilot), Windsurf, and Cline.

Is Fact MCP Tool free to use?

Yes, Fact MCP Tool is open source and available under the MIT license. You can use it freely in both personal and commercial projects.

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Browse More Knowledge & Memory MCP Servers

Explore all knowledge & memory servers available in the MCPgee directory. Each server includes setup guides for Claude, Cursor, and VS Code.

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Set Up Fact MCP Tool in Your Editor

Choose your AI client for step-by-step setup instructions.

🖥️

Claude Desktop

macOS & Windows app

⌨️

Claude Code

CLI & terminal

📝

Cursor

AI-first code editor

💻

VS Code

GitHub Copilot MCP

🏄

Windsurf

Codeium AI editor

🔌

Cline

VS Code extension

Quick Config Preview

{
  "mcpServers": {
    "fact-mcp-tool": {
      "command": "npx",
      "args": ["-y", "fact-mcp-tool"]
    }
  }
}

Add this to your claude_desktop_config.json or .cursor/mcp.json

Read the full setup guide →

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