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NVIDIAKnown publisherNVIDIA/SkillEvaluator/src/skillevaluator/tier3/reference_skills/calculator/SKILL.md

calculator

Skill656 starsChanged 7 days agoApache-2.0View on GitHub

Evaluate mathematical expressions and unit conversions. Handles arithmetic, percentages, exponents, and common unit conversions (temperature, distance, weight). No external dependencies.

8 other projects use a version of this.

Adopted by

Most recently taken up by

The file

We split this skill into the rules it gives an agent

4 rules. 0 are common, 1 is distinctive, and 3 are very specific to this project.

  • 0

    Common

    Most of the 5 edited versions we read keep these.

  • 1

    Distinctive

    This author's own choices. Worth a look.

  • 3

    Very specific

    Tied to their project's names, files or tools. Probably skip.

  • Common
  • Distinctive
  • Very specific
  1. Very specific:

    Read this SKILL.md to understand capabilities.

    line 20
  2. Very specific:

    Run scripts/calc.py with the user's expression or conversion.

    line 21
  3. Distinctive:

    No symbolic algebra (no variables, no equations).

    line 57
  4. Very specific:

    Only supports basic arithmetic operators: +, -, *, /, , %, parentheses.

    line 58

“Common” is measured: kept by at least 6 in 10 of the 5 edited versions of this file we could read. “Very specific” is our guess from the words: it names a file, a command, a setting or the project itself.

Keep what fits and drop the rest. Your version, ready for your agents.
Files
SKILL.md

Calculator

Evaluate math expressions and perform unit conversions from the command line.

Purpose

Provide a safe, sandboxed calculator for arithmetic expressions and common unit conversions without relying on eval() or external services.

Agent Instructions

  1. Read this SKILL.md to understand capabilities.
  2. Run scripts/calc.py with the user's expression or conversion.
  3. Return the computed result to the user.

Examples

Usage

# Arithmetic expressions
python scripts/calc.py "2 + 3 * 4"
python scripts/calc.py "(100 - 25) / 3"
python scripts/calc.py "2 ** 10"

# Percentage calculations
python scripts/calc.py "15% of 200"

# Unit conversions
python scripts/calc.py "100 celsius to fahrenheit"
python scripts/calc.py "5 miles to km"
python scripts/calc.py "10 kg to lbs"

Output

A single line with the result, e.g.:

Result: 14

For conversions:

100 celsius = 212.0 fahrenheit

Limitations

  • No symbolic algebra (no variables, no equations).
  • Only supports basic arithmetic operators: +, -, *, /, **, %, parentheses.
  • Unit conversions are limited to: celsius/fahrenheit, miles/km, kg/lbs, meters/feet.

Troubleshooting

ProblemFix
Invalid expressionCheck for unsupported operators or variables
Unknown conversionUse supported units: celsius, fahrenheit, miles, km, kg, lbs, meters, feet

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