Calculator vs Cruncher

In-depth architectural comparison of the Calculator and Cruncher MCP servers. Compare execution transports, security boundaries, tool capabilities, quality scores, and ready-to-paste client installation snippets for Claude, Cursor, Windsurf, and VS Code.

Which MCP Server Should You Choose?

C

Choose Calculator when:

• You need dedicated capabilities in the Developer Tools domain.
• You prefer local stdio subprocess transport architecture.
• Your security boundary fits: No auth required (Free / Open Source).

Explore Calculator Details

Choose Cruncher when:

• You need dedicated capabilities in the Developer Tools domain.
• You prefer local stdio subprocess transport architecture.
• Your security boundary fits: No auth required (Free / Open Source).

Explore Cruncher Details

Feature & Specification Comparison

Specification	C Calculator Developer Tools	Cruncher Developer Tools
Summary	Exact arithmetic: one calculator tool over an AST allowlist, with integers exact at any size.	Scientific calculator MCP server with 43 tools: arithmetic, trig, stats, unit conversion.
Category & Scope	Developer Tools	Developer Tools
Quality signal

Tools & Capabilities Breakdown

Ready-to-Paste Client Configurations

Paste either (or both) of these JSON server blocks into your client config file (e.g. claude_desktop_config.json or ~/.cursor/mcp.json).

{
  "mcpServers": {
    "calculator": {
      "command": "npx",
      "args": [
        "-y",
        "calculator"
      ]
    }
  }
}

{
  "mcpServers": {
    "cruncher": {
      "command": "npx",
      "args": [
        "-y",
        "@slbdn/cruncher-mcp"
      ]
    }
  }
}

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