Ultimath Mcp

Created By

Flupke682 days ago

Stop hallucinating numbers. An MCP server that runs every math expression through four independent numeric engines in parallel and returns all four results side by side — so when they disagree, you know the answer is numerically unreliable.

# math

# calculator

Overview Content Tools Comments

Overview

Ultimath MCP

Stop hallucinating numbers. An MCP server that runs every math expression through four independent numeric engines in parallel and returns all four results side by side — so when they disagree, you know the answer is numerically unreliable.

The four engines:

Engine	What it does
Multiprecision	High-precision arbitrary-digit arithmetic
Exact decimal	Exact base-10 arithmetic
IEEE-754 double	Standard hardware floating point
Interval	Rigorous lower/upper bounds (guaranteed enclosure)

Tools

evaluate — evaluate an expression on all four engines and compare. Supports arithmetic, trig (sin, cos, tan), exp/log (exp, ln, log), roots and powers (sqrt, x^y), factorial, complex numbers (3+2i), alternate bases (0xFF, 0b1010), and constants (pi, e, golden ratio PHI).
list_functions — list every function the engines expose (name, arity, category, description). Optionally filter by category.

Multiplication must be explicit: write 2*pi, 2*sin(x), (a+b)*(c+d). Adjacency is not a product (2pi is an error). Expressions are purely mathematical — no type casts or constructors; write a complex number as 1+2i.

Setup

Get a free API key at https://ultimath.ai.
Add the server to your MCP client config (example for Claude Desktop):

{
  "mcpServers": {
    "ultimath": {
      "command": "npx",
      "args": ["-y", "ultimath-mcp"],
      "env": {
        "ULTIMATH_API_KEY": "your_api_key_here"
      }
    }
  }
}

That's it — npx fetches and runs the server on demand.

Requirements

Node.js ≥ 18
An Ultimath API key (ULTIMATH_API_KEY)

Under the hood

Ultimath's engines build on FLINT/Arb, GMP/MPFR and Boost — full credits at https://ultimath.ai/credits.

Privacy

Ultimath stores only a hash of your API key and basic usage metrics to run and secure the service; expressions are evaluated, not retained for training. Full policy: https://ultimath.ai/privacy/

License

MIT

Server Config

{
  "mcpServers": {
    "ultimath": {
      "command": "npx",
      "args": [
        "-y",
        "ultimath-mcp"
      ],
      "env": {
        "ULTIMATH_API_KEY": "your_api_key"
      }
    }
  }
}

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