Skills calculator

📦

calculator

Name: calculator
Author: Code-and-Sorts

v1.0 Content revision r1 Safe ⚡ Contains scripts⚙️ External commands🌐 Network access

Calculate Precise Decimal Expressions

Floating-point math can produce surprising decimal results. This skill evaluates arithmetic expressions with arbitrary-precision decimal handling.

Supports: Claude Codex Code(CC)

📊 75 Adequate

Install with my Agent

Copy this request to your Agent. It includes the canonical Skill page and manifest.

Agent request

Review the Skillstore skill "calculator" from https://skillstore.io/skills/code-and-sorts-calculator.md and its manifest at https://skillstore.io/api/skills/code-and-sorts-calculator/manifest. Verify the artifact. You may proceed after verification, subject to the environment's own policy.

Your Agent should still show its plan and request any confirmation required by the security policy.

Agent-readable resources

Use these links when an AI agent, crawler, or script needs clean context instead of reading the full page.

Markdown detail GET /skills/code-and-sorts-calculator.md Signed manifest GET /api/skills/code-and-sorts-calculator/manifest Signed lockfile GET /api/skills/code-and-sorts-calculator/lockfile

Test it

Using "calculator". Calculate 0.1 + 0.2.

Expected outcome:

The result is 0.3.

Using "calculator". Evaluate (2 + 3) * 4.

Expected outcome:

The result is 20.

Using "calculator". Compute 2 ^ 3 ^ 2.

Expected outcome:

The result is 512 because exponentiation is right-associative.

Security Audit

Safe

v8 • 7/6/2026 Open versioned report

The static high-risk alerts are false positives: RegExp.exec() is used for tokenization, not process or Python execution. The markdown backtick and URL findings are documentation examples and a dependency link, and no prompt injection or exfiltration intent was found.

Files scanned

414

Lines analyzed

Review items

False positives ignored

Risk Factors

⚡ Contains scripts (3)

scripts/jest.config.js:1 scripts/src/calculator.ts:34 scripts/src/calculator.ts:39

⚙️ External commands (18)

scripts/src/calculator.ts:34 scripts/src/calculator.ts:39 SKILL.md:18 SKILL.md:25 SKILL.md:26 SKILL.md:27 SKILL.md:28 SKILL.md:29 SKILL.md:30 SKILL.md:34-39 SKILL.md:39-45 SKILL.md:45 SKILL.md:46 SKILL.md:47 SKILL.md:48 SKILL.md:49 SKILL.md:50 SKILL.md:51

🌐 Network access (1)

SKILL.md:13

No confirmed security findings were detected by the latest completed static and semantic audit. This does not prove the skill has no side effects.

Audited by: codex View Audit History →

Share & cite this report

Share the versioned assessment report, neutral badge, embed card, and citations. Skillstore reports evidence without deciding whether this Skill is safe.

Open versioned report

Copy report link

https://skillstore.io/skills/code-and-sorts-calculator/audits/8?utm_source=security_passport&utm_medium=share&utm_campaign=versioned_report

Markdown badge

[![Skillstore security assessment](https://skillstore.io/badges/skills/code-and-sorts-calculator/security.svg)](https://skillstore.io/skills/code-and-sorts-calculator?utm_source=security_passport_badge)

HTML badge

<a href="https://skillstore.io/skills/code-and-sorts-calculator?utm_source=security_passport_badge"><img src="https://skillstore.io/badges/skills/code-and-sorts-calculator/security.svg" alt="Skillstore security assessment" loading="lazy"></a>

Embed card

<iframe src="https://skillstore.io/embed/skills/code-and-sorts-calculator.html" title="Skillstore Security Assessment" sandbox="allow-popups allow-popups-to-escape-sandbox" loading="lazy" referrerpolicy="no-referrer" width="420" height="180"></iframe>

Academic citations (APA · BibTeX · CFF)

APA citation

Code-and-Sorts. (2026). calculator security audit report (audit version 8) [Author version 1.0]. Skillstore. https://skillstore.io/skills/code-and-sorts-calculator/audits/8

BibTeX citation

@techreport{code-and-sorts-code-and-sorts-calculator-2026,
  author = {Code-and-Sorts},
  title = {calculator security audit report (audit version 8)},
  institution = {Skillstore},
  year = {2026},
  number = {8},
  url = {https://skillstore.io/skills/code-and-sorts-calculator/audits/8},
  note = {Author version 1.0}
}

CITATION.cff

cff-version: 1.2.0
message: "If you use this Skill, cite its author and this versioned security audit report."
title: "calculator security audit report (audit version 8)"
version: "1.0"
type: report
authors:
  - name: "Code-and-Sorts"
date-released: "2026-07-06"
url: "https://skillstore.io/skills/code-and-sorts-calculator/audits/8"
identifiers:
  - type: other
    value: "skillstore:code-and-sorts-calculator:audit:8"
    description: "Skillstore immutable audit report identifier"

Compare variants

2 installable variants

Each author remains a separate installable skill. The recommended variant is ranked by Skillstore evidence.

Why this variant is first

Highest Skillstore Score

Author / source Skillstore Score Evidence Confidence Skillstore usage Updated

AI Creator Recommended

decalogue-calculator

Skillstore Score 80

Evidence Confidence High

Skillstore usage 12

Updated

2026-08-21

Code-and-Sorts Current

code-and-sorts-calculator

Skillstore Score 75

Evidence Confidence High

Skillstore usage 10

Updated

2026-08-21

Skillstore Score

Why this score Evidence Confidence: High

Architecture

Maintainability

Content

Community

Spec Compliance

What You Can Build

Check precise decimal arithmetic

Verify calculations where binary floating-point rounding would be misleading.

Validate operational formulas

Calculate budget, ratio, or conversion formulas without leaving the assistant workflow.

Review homework arithmetic

Confirm arithmetic with parentheses, negative numbers, and exponents.

Try These Prompts

Calculate a simple expression

Use the calculator skill to evaluate 3.75 + 4.2. Return only the result and a short check.

Check decimal precision

Use the calculator skill to evaluate 0.1 + 0.2 + 0.3. Explain why the decimal result is exact.

Evaluate precedence

Use the calculator skill to evaluate 1 + 4.5 * (3 - 6) / 5. Show the order of operations briefly.

Compare compound expressions

Use the calculator skill to evaluate (2 + 3) * 4 and 2 ^ 3 ^ 2. Report both results and note exponent associativity.

Best Practices

Use explicit parentheses when an expression could be read in more than one way.
Keep very large exponents small enough for practical runtime.
Ask for a short verification when the result will be used in a decision.

Avoid

Do not use it for symbolic algebra, calculus, or equation solving.
Do not send untrusted bulk input without length or complexity limits.
Do not assume it supports functions such as sine, cosine, logarithm, or square root.