How do I install Facts402?

Facts402 is a local plugin. Install it using PyPI package: facts402-mcp and add the generated configuration snippet to your AI app's MCP config file. Then restart your AI app.

Is Facts402 safe to use?

Yes. Facts402 passed MCP Marketplace's automated security scan with a score of 9.7/10 (low risk). Every server on MCP Marketplace is security-scanned before it's listed; see the full security report on this page for the findings and permissions.

What credentials does Facts402 need?

Facts402 requires the following credentials or environment variables: X402_PRIVATE_KEY, X402_MAX_PER_CALL_USD, X402_SESSION_BUDGET_USD. You can find setup instructions on the server detail page.

What AI apps work with Facts402?

Facts402 uses the Model Context Protocol (MCP) and works with any MCP-compatible AI app, including Claude, ChatGPT / Codex, Gemini, Copilot, Cursor, and more.

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Facts402 MCP Server

by Veselin9931

Developer ToolsLow Risk9.7MCP RegistryLocal

Free

Server data from the Official MCP Registry

Find the right paid x402 API, plus fact checks: IBAN, EU VAT, OFAC sanctions, LEI, FX

About

Find the right paid x402 API, plus fact checks: IBAN, EU VAT, OFAC sanctions, LEI, FX

Security Report

9.7

Low Risk9.7Low Risk

Valid MCP server (2 strong, 1 medium validity signals). No known CVEs in dependencies. ⚠️ Package registry links to a different repository than scanned source. Imported from the Official MCP Registry. 1 finding(s) downgraded by scanner intelligence.

11 files analyzed · 1 issue found

Security scores are indicators to help you make informed decisions, not guarantees. Always review permissions before connecting any MCP server.

Permissions Required

This plugin requests these system permissions. Most are normal for its category.

HTTP Network Access

Connects to external APIs or services over the internet.

env_vars

Check that this permission is expected for this type of plugin.

What You'll Need

Set these up before or after installing:

Private key of your own Base mainnet wallet holding a little USDC. Optional: without it only the free tools work.Required

Environment variable: X402_PRIVATE_KEY

Most a single tool call may pay, in USDOptional

Environment variable: X402_MAX_PER_CALL_USD

Most the server may spend until it restarts, in USDOptional

Environment variable: X402_SESSION_BUDGET_USD

How to Install

Add this to your MCP configuration file:

{
  "mcpServers": {
    "com-facts402-facts402-mcp": {
      "env": {
        "X402_PRIVATE_KEY": "your-x402-private-key-here",
        "X402_MAX_PER_CALL_USD": "your-x402-max-per-call-usd-here",
        "X402_SESSION_BUDGET_USD": "your-x402-session-budget-usd-here"
      },
      "args": [
        "facts402-mcp"
      ],
      "command": "uvx"
    }
  }
}

Documentation

View on GitHub

From the project's GitHub README.