Calculator MCP Server
Provides a calculator tool that can evaluate mathematical expressions over the Model Context Protocol.
README
Calculator MCP Agent
A LangChain agent that connects to a custom MCP (Model Context Protocol) server which exposes a simple calculator tool. The agent can evaluate mathematical expressions by calling the calculator tool over MCP.
How it works
mcqcalc.py— a FastMCP server that exposes acalculatortool (and a prompt template) over streamable HTTP.mcp_calc.ipynb— a notebook that starts a LangChain agent, connects to the MCP server, and uses a locally hosted Ollama model to answer math questions.
Running it
Running this project takes two steps, in two separate terminals.
-
Start the MCP server in one terminal:
python mcqcalc.pyThis launches the calculator MCP server (listening on port 8000).
-
Run the notebook in another terminal (or your editor):
Open and run
mcp_calc.ipynb. It connects to the running MCP server and drives the agent.
Ollama configuration
The notebook's base_url for Ollama points to a private local network
address specific to my setup. Before running the notebook,
replace that base_url with your own Ollama instance URL (for example,
http://localhost:11434 if you run Ollama locally).
Setup
Install dependencies:
pip install -r requirements.txt
Create a .env file for any required environment variables (it is git-ignored).
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