📘 sci_calc_mcp

A Scientific Calculator MCP Server

Built with FastMCP, designed for ChatGPT Apps, MCP Inspector, and Render deployment.

🚀 Overview

sci_calc_mcp is a lightweight, high-performance Model Context Protocol (MCP) server that exposes scientific calculator operations as atomic tools.

Each operation is a standalone MCP tool:

• add(a, b)

• subtract(a, b)

• multiply(a, b)

• divide(a, b)

• mod(a, b)

• power(base, exponent)

• sqrt(x)

• sin(x)

• cos(x)

• tan(x)

• asin(x)

• acos(x)

• atan(x)

• exp(x)

• ln(x)

• log10(x)

• absval(x)

• round_to(x, digits)

This design is MCP-native, strongly typed, easy to inspect, and ideal for building calculator UIs.

✨ Features

• 🧮 Multiple scientific-level operations

• ⚡ Pure FastMCP server — minimal dependencies

• 🌐 HTTP/SSE transport for web apps and inspectors

• 📦 Single-file server (

• 🔍 Compatible with MCP Inspector

• 🤖 Fully compatible with ChatGPT Apps SDK

• ☁️ Pre-configured for Render.com hosting

• 🔒 Safe mathematical operations (e.g., division by zero protection)

ChatGPT App

The server is currently live and hosted on Render. I have connected it as a custom tool in ChatGPT's new App Developer mode and will submit it as soon as the planned app store comes online.

📄 License

This project is licensed under the MIT License - see the LICENSE file for details.