# Calculator

> A simple calculator that can add, subtract, multiply, and divide numbers. Use when the user needs to perform basic arithmetic operations.

- Skill: `tools-only/calculator` (Agent Skill, multi-file: 3 files)
- Install (CLI): `npx skillmds add tools-only/calculator`
- Raw SKILL.md: https://api.skillmd.com/api/skills/tools-only/calculator/raw
- Safety review: pending
- Works with: Claude Code, Claude.ai, OpenAI Codex
- Category: Coding & Dev Tools
- License: MIT
- Author: tools-only (https://skillmd.com/u/tools-only)
- Updated: 2026-09-09
- Page: https://skillmd.com/skills/tools-only/calculator

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# Calculator Skill

A simple calculator that performs basic arithmetic operations.

## Usage

Provide an operation and two numbers to get the result.

### Examples

- Add: `{"operation": "add", "a": 5, "b": 3}` → `8`
- Subtract: `{"operation": "subtract", "a": 10, "b": 4}` → `6`
- Multiply: `{"operation": "multiply", "a": 6, "b": 7}` → `42`
- Divide: `{"operation": "divide", "a": 20, "b": 4}` → `5`