About Calculator MCP Server
Calculator MCP Server is an MCP server for numerical calculation that lets LLMs evaluate expressions precisely. It can be installed with uv or pip and suits workflows that need exact numeric results.
Key features
- 01calculate tool evaluates a given expression
- 02Runs directly with uvx
- 03Installable with pip and runnable as a module
- 04Released under the MIT License
Use cases
- 01Having an LLM perform exact numerical calculations
- 02Calling a calculation tool during conversations that need deterministic results
MCP support
The server exposes a tool named calculate to MCP clients, which takes a string expression parameter and returns the result. Clients start it through mcpServers configuration using uvx or python -m.
Configuration
Local server config is the same for every client. Copy it into your client’s MCP config file.
We haven’t collected a package or remote endpoint for this server. Follow the instructions in the project README.
Tools
Local servers expose tools only once running on your machine, and the maintainer has not provided a tool list.
Details
From the project READMECalculator MCP Server
A Model Context Protocol server for calculating. This server enables LLMs to use calculator for precise numerical calculations.
Available Tools
calculate- Calculates/evaluates the given expression.expression(string, required): Expression to be calculated
Installation
Using uv (recommended)
When using uv no specific installation is needed. We will
use uvx to directly run mcp-server-calculator.
curl -LsSf https://astral.sh/uv/install.sh | sh
Using PIP
Alternatively you can install mcp-server-calculator via pip:
pip install mcp-server-calculator
After installation, you can run it as a script using:
python -m mcp_server_calculator
Configuration
Using uv (recommended)
Add this to your MCP client settings:
"mcpServers": {
"calculator": {
"command": "uvx",
"args": ["mcp-server-calculator"]
}
}
Using PIP
Alternatively add this to your MCP client settings:
"mcpServers": {
"calculator": {
"command": "python",
"args": ["-m", "mcp_server_calculator"]
}
}
License
mcp-server-calculator is licensed under the MIT License. This means you are free to use, modify, and distribute the software, subject to the terms and conditions of the MIT License. For more details, please see the LICENSE file in the project repository.
Comments
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From what the protocol is to installing your first server, these answers cover most first questions.
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