Calculator

io.github.slettmayer/calc-mcp-server

Exact arithmetic: one calculator tool over an AST allowlist, with integers exact at any size.

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Connect this server

Add this to your MCP client config — claude_desktop_config.json (Claude Desktop) or .cursor/mcp.json (Cursor).Suits: Claude Desktop · Cursor.

{
  "mcpServers": {
    "calc-mcp-server": {
      "command": "uvx",
      "args": [
        "calc-mcp-server"
      ]
    }
  }
}

A starting point — check the repository for exact arguments and setup. Restart your client after editing the config.

Category
Developer Tools
Version
0.1.9
Registry
active
Published
9/17/2026

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Add the badge to your site

Show visitors that Calculator is listed here — it’s also the link we check for a free listing.

Calculator — listed on Serverdex

HTML — for your website

<a href="https://serverdex.io/server/io-github-slettmayer-calc-mcp-server?utm_source=badge"><img src="https://serverdex.io/brand/badge.svg" alt="Calculator — listed on Serverdex" width="123" height="40" loading="lazy"></a>

Recommended. A dofollow link from your own domain is the one that counts for search engines, and it's the link we check for a free listing.

Markdown — for your README

[![Calculator — listed on Serverdex](https://serverdex.io/brand/badge.svg)](https://serverdex.io/server/io-github-slettmayer-calc-mcp-server?utm_source=badge)

Nice for visibility, but GitHub marks README links nofollow, so it doesn't pass authority. Use the HTML badge on your site as well.