calculator-skill

Evaluate arithmetic, trigonometric, and logarithmic expressions in a restricted environment.

Updated Dec 26, 2025
One-click install
npx skills add https://github.com/smallnest/calculator-skill --skill calculator-skill
Or copy as Structured Prompt for Agent
Please help me install this Agent Skill.
Skill: calculator-skill
Source: https://github.com/smallnest/calculator-skill/tree/main/.
Command: npx skills add https://github.com/smallnest/calculator-skill --skill calculator-skill

SYSTEM DOCUMENTATION & REQUIREMENTS

💡 This Skill includes scripts (resource) and references (resource) components.

What problem does it solve?

This Skill provides a ready-to-use calculator engine to evaluate mathematical expressions safely within AI workflows, eliminating manual calculation and reducing errors.

Core Features & Use Cases

  • Safe Evaluation: Uses a restricted execution environment to prevent arbitrary code execution.
  • Comprehensive Math Functions: Supports basic arithmetic, trigonometry, logarithms, roots, and constants like pi and e.
  • Use Case: Integrate into an AI assistant to perform on-demand calculations for user queries or to verify results in real-time.

Quick Start

Run an example to evaluate a simple expression, e.g., python scripts/calculate.py "2 + 2" to see the result.

Frequently Asked Questions about calculator-skill

High-intent search queries and answers about installing and using this skill.

FAQPage Schema
How do I safely evaluate mathematical expressions in code?

Safe evaluation of mathematical expressions uses a restricted execution environment with whitelisted functions to prevent arbitrary code execution. This Skill provides that sandboxed environment, supporting arithmetic, trigonometry, logarithms, and constants like pi and e, returning formatted numeric results without security risk.

Can I integrate a calculator into an AI assistant for on-demand computation?

Yes. This Skill integrates directly into AI workflows and agents to compute mathematical expressions from text prompts or API requests. It handles comprehensive math functions—basic arithmetic, trigonometric, logarithmic, roots—with robust error handling and consistent numeric formatting for real-time result verification.

What mathematical functions does this calculator support?

The calculator supports basic arithmetic, trigonometry, logarithms, roots, and mathematical constants including pi and e. All functions execute in a restricted environment with a whitelisted function set and constrained globals to ensure safe, accurate evaluation of complex expressions.

How do I evaluate a mathematical expression from a text prompt?

Pass the expression as input to the calculator engine, which parses and evaluates it in the safe execution environment. The Skill returns the computed numeric result with consistent formatting, suitable for immediate use in workflows or for displaying to users.

What prevents errors or arbitrary code execution when evaluating user-provided math expressions?

The Skill enforces a restricted execution environment with a whitelisted function set, constrained globals, and robust error handling. These constraints eliminate manual calculation work, reduce errors, and block unauthorized operations while safely evaluating mathematical expressions from any source.

Can I use this calculator in production workflows with untrusted input?

Yes. The security-constrained execution environment is designed to handle untrusted input safely. Functional requirements include whitelisted functions, restricted globals, and consistent error handling, making it suitable for production AI assistants and automated calculation pipelines.