Number Tools MCP Server: Install & Setup

Install Number Tools in Claude Code

Claude Code

claude mcp add number-tools -- npx -y number-tools-mcp

mcp.json (Claude Desktop, Cursor, VS Code, Windsurf)

{
  "mcpServers": {
    "number-tools": {
      "command": "npx",
      "args": [
        "-y",
        "number-tools-mcp"
      ]
    }
  }
}

Convert numbers between bases, make roman numerals, and spell out numbers locally. No network...

Yes, most likely. Open source and no paid account or API key is mentioned in the listing. Check the provider for current pricing.

Local. Runs on your machine (stdio). You install it with npx, uvx, Docker or from source.

Run: claude mcp add number-tools -- npx -y number-tools-mcp

mrfentmen/on-this-day-mcp

Historic births, deaths, and events for any date from Wikipedia. No key required.

mrfentmen/name-age-mcp

Estimate age and gender from a first name using Agify and Genderize. No key required.

mrfentmen/osrm-mcp

Driving, cycling, and walking routes and nearest road lookups via OSRM. No key required.

karashiiro/my-cool-proxy

An MCP server gateway that minimizes context usage via progressive Lua-driven discovery 🌙

mrfentmen/password-breach-check-mcp

Check if a password has appeared in known breaches without sending the password. No key required.

Stefan39/mite-mcp-server

mite time tracking: server-side reports, time entries, master data. Read-only by default.