Scientific Calculator

Calculators REST API MCP

Evaluate a scientific math expression and return the numeric result (12 significant digits). Supports + - * / ^ (or **), parentheses, n!, π (or pi), e, and the functions sin, cos, tan, asin, acos, atan, log (base 10), ln, sqrt (or √), abs, exp. Trigonometry in radians or degrees. Uses a safe parser — no code execution.

This page documents the MCP tool findutils:scientific_calculator. See the REST reference →

Use in the browser View as Markdown

Call it over MCP

Tool name findutils:scientific_calculator · no API keys · 120 requests/min per IP

Claude Code

claude mcp add findutils --transport http https://mcp.findutils.com/

Claude Desktop — claude_desktop_config.json

{
  "mcpServers": {
    "findutils": {
      "url": "https://mcp.findutils.com/"
    }
  }
}

Raw JSON-RPC (any MCP client) — verified example

curl -X POST https://mcp.findutils.com/ \
  -H "Content-Type: application/json" \
  -d '{
    "jsonrpc": "2.0",
    "id": 1,
    "method": "tools/call",
    "params": {
      "name": "scientific_calculator",
      "arguments": {
        "expression": "sin(30) + 2^3",
        "angle_unit": "deg"
      }
    }
  }'

Input schema

Argument	Type	Required	Description
expression	string	yes	Expression to evaluate, e.g. "sin(30) + 2^3 * (4 - 1)" or "5! / sqrt(16)".
angle_unit	string (rad \| deg)	no	Angle unit for sin/cos/tan inputs and asin/acos/atan outputs. Default: "rad".

Example arguments (verified)

{
  "expression": "sin(30) + 2^3",
  "angle_unit": "deg"
}

Also a REST endpoint

The same tool answers plain HTTP at POST /api/tools/scientific-calculator/execute — no key, 60 requests/min.

Open the REST reference for Scientific Calculator →

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