/calculator
Performs arbitrary-precision arithmetic calculations including addition, subtraction, multiplication, division, and exponents. Use when the user asks to calculate, compute, or evaluate math expressions, or when precise decimal arithmetic is needed to avoid floating-point errors.
$ npx -y skills add Code-and-Sorts/awesome-copilot-agents --skill calculator --agent claude-codeHow it fires
How this skill gets triggered: by you, by Claude, or both.
- Fires itselfAuto-invocation. Claude auto-loads it when your prompt matches the work.Auto-invocation is when the right skill fires by itself at the right moment, driven by a FLOW.md router and a hook, instead of you invoking it by name. It is the difference between a skill being installed and a skill actually getting used.Read the full definition →
- You can call itInvoke it directly when you want it.
- Slash command
/calculator
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The summary Claude sees to decide when to auto-load this skill.
Performs arbitrary-precision arithmetic calculations including addition, subtraction, multiplication, division, and exponents. Use when the user asks to calculate, compute, or evaluate math expressions, or when precise decimal arithmetic is needed to avoid floating-point errors.
SKILL.md
calculator.SKILL.mdname: calculator
description: Performs arbitrary-precision arithmetic calculations including addition, subtraction, multiplication, division, and exponents. Use when the user asks to calculate, compute, or evaluate math expressions, or when precise decimal arithmetic is needed to avoid floating-point errors.
license: MIT
compatibility: Requires Node.js and npm
metadata:
author: Colby Timm
version: "1.0"
Calculator
Evaluate arithmetic expressions with arbitrary-precision decimal math using [big.js](https://github.com/MikeMcl/big.js/).
When to Use
- User asks to calculate or evaluate a math expression
- Precise decimal arithmetic is needed (avoids floating-point errors like `0.1 + 0.2 = 0.30000000000000004`)
- Expressions involve parentheses, operator precedence, or exponents
Supported Operations
| Operator | Description | Precedence | | -------- | ----------- | ---------- | | `+` | Addition | 1 | | `-` | Subtraction | 1 | | `*` | Multiplication | 2 | | `/` | Division | 2 | | `^` | Exponent (right-associative) | 3 | | `()` | Parentheses | Highest |
Usage
cd scripts
npm ci || npm install
npm run build
npm run calculate "<expression>"
Examples
| Input | Output | | ----- | ------ | | `"3 + 2"` | `5` | | `"10 / 4"` | `2.5` | | `"2 ^ 10"` | `1024` | | `"(2 + 3) * 4"` | `20` | | `"1 + 4.5 * (3-6) / 5"` | `-1.7` | | `"-5 + 3"` | `-2` | | `"2 ^ 3 ^ 2"` | `512` (right-associative: 2^9) |
Edge Cases
- **Empty expression**: Throws "Empty expression" error
- **Mismatched parentheses**: Throws "Mismatched parentheses" error
- **Division by zero**: big.js throws an error
- **Exponent must be integer**: big.js `.pow()` requires integer exponents
Limitations
- No trigonometric functions (sin, cos, tan)
- No variables or symbolic math
- Exponents must be integers
- No factorial, modulo, or bitwise operators
Read more
name: calculator description: Performs arbitrary-precision arithmetic calculations including addition, subtraction, multiplication, division, and exponents. Use when the user asks to calculate, compute, or evaluate math expressions, or when precise decimal arithmetic is needed to avoid floating-point errors. license: MIT compatibility: Requires Node.js and npm metadata: author: Colby Timm version: "1.0"
Calculator
Evaluate arithmetic expressions with arbitrary-precision decimal math using [big.js](https://github.com/MikeMcl/big.js/).
When to Use
- User asks to calculate or evaluate a math expression
- Precise decimal arithmetic is needed (avoids floating-point errors like `0.1 + 0.2 = 0.30000000000000004`)
- Expressions involve parentheses, operator precedence, or exponents
Supported Operations
| Operator | Description | Precedence | | -------- | ----------- | ---------- | | `+` | Addition | 1 | | `-` | Subtraction | 1 | | `*` | Multiplication | 2 | | `/` | Division | 2 | | `^` | Exponent (right-associative) | 3 | | `()` | Parentheses | Highest |
Usage
cd scripts npm ci || npm install npm run build npm run calculate "<expression>"
Examples
| Input | Output | | ----- | ------ | | `"3 + 2"` | `5` | | `"10 / 4"` | `2.5` | | `"2 ^ 10"` | `1024` | | `"(2 + 3) * 4"` | `20` | | `"1 + 4.5 * (3-6) / 5"` | `-1.7` | | `"-5 + 3"` | `-2` | | `"2 ^ 3 ^ 2"` | `512` (right-associative: 2^9) |
Edge Cases
- **Empty expression**: Throws "Empty expression" error
- **Mismatched parentheses**: Throws "Mismatched parentheses" error
- **Division by zero**: big.js throws an error
- **Exponent must be integer**: big.js `.pow()` requires integer exponents
Limitations
- No trigonometric functions (sin, cos, tan)
- No variables or symbolic math
- Exponents must be integers
- No factorial, modulo, or bitwise operators
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Repo: Code-and-Sorts/awesome-copilot-agents
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