by githejie
Use Calculator for quick, secure payroll and percentage calculations. Try our percentage calculator and payroll calculat
Evaluates mathematical expressions securely using Python's AST module instead of eval(). Enables precise numerical calculations in AI conversations.
Calculator is a community-built MCP server published by githejie that provides AI assistants with tools and capabilities via the Model Context Protocol. Use Calculator for quick, secure payroll and percentage calculations. Try our percentage calculator and payroll calculat It is categorized under productivity, developer tools. This server exposes 1 tool that AI clients can invoke during conversations and coding sessions.
You can install Calculator in your AI client of choice. Use the install panel on this page to get one-click setup for Cursor, Claude Desktop, VS Code, and other MCP-compatible clients. This server runs locally on your machine via the stdio transport. This server supports remote connections over HTTP, so no local installation is required.
MIT
Calculator is released under the MIT license. This is a permissive open-source license, meaning you can freely use, modify, and distribute the software.
Add new capabilities to Claude beyond text generation
Example
Access external data sources, execute code, interact with tools and services
Transform Claude from chatbot to action-taking agent
Provide Claude with access to relevant context and data
Example
Load project documentation, access knowledge bases, query databases
Get more accurate, context-aware responses
Automate multi-step workflows combining AI and external tools
Example
Research → Summarize → Create document → Send notification
Complete complex tasks end-to-end without manual steps
Share your MCP server with the developer community
I recommend Calculator for teams standardizing on MCP; the explainx.ai page compares cleanly with sibling servers.
Strong directory entry: Calculator surfaces stars and publisher context so we could sanity-check maintenance before adopting.
Calculator is among the better-indexed MCP projects we tried; the explainx.ai summary tracks the official description.
Calculator reduced integration guesswork — categories and install configs on the listing matched the upstream repo.
According to our notes, Calculator benefits from clear Model Context Protocol framing — fewer ambiguous “AI plugin” claims.
Calculator has been reliable for tool-calling workflows; the MCP profile page is a good permalink for internal docs.
Calculator reduced integration guesswork — categories and install configs on the listing matched the upstream repo.
Calculator is a well-scoped MCP server in the explainx.ai directory — install snippets and categories matched our Claude Code setup.
Calculator is among the better-indexed MCP projects we tried; the explainx.ai summary tracks the official description.
We wired Calculator into a staging workspace; the listing’s GitHub and npm pointers saved time versus hunting across READMEs.
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A Model Context Protocol server for calculating. This server enables LLMs to use calculator for precise numerical calculations.
calculate - Calculates/evaluates the given expression.
expression (string, required): Expression to be calculatedWhen 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
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
Add this to your MCP client settings:
"mcpServers": {
"calculator": {
"command": "uvx",
"args": ["mcp-server-calculator"]
}
}
Alternatively add this to your MCP client settings:
"mcpServers": {
"calculator": {
"command": "python",
"args": ["-m", "mcp_server_calculator"]
}
}
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.
Prerequisites
Time Estimate
15-60 minutes depending on server complexity
Steps
Troubleshooting
✓ Do
✗ Don't
💡 Pro Tips
Architecture
Model Context Protocol standardizes how AI hosts (Claude, Cursor) communicate with external tools and data sources through server implementations.
Protocols
Compatibility
✓ Use when
Use when you need Claude to access external data, execute actions, or integrate with tools. Best for extending AI capabilities beyond conversation.
✗ Avoid when
Avoid when native integrations exist (use official APIs directly), for real-time critical systems, or when security/compliance requires zero external dependencies.