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Agent skill

Quick Calculator

by alibaba in alibaba/skill-up

Quickly produces accurate calculation results when a user needs arithmetic, unit conversion, or mathematical formula solving.

Apache-2.0Auto-check passed

Install Quick Calculator

skills CLI
$ npx skills add alibaba/skill-up --skill quick-calculator -a claude-code

Project install by default; add -g for ~/.claude/skills/.

GitHub CLI
$ gh skill install alibaba/skill-up quick-calculator --agent claude-code

Project scope by default; add --scope user for a personal install. Needs GitHub CLI 2.90.0 or later (public preview).

Manual copy
$ git clone --depth 1 https://github.com/alibaba/skill-up.git skills-src && mkdir -p .claude/skills && cp -r skills-src/e2e/testdata/expect-short-circuit .claude/skills/quick-calculator && rm -rf skills-src

Use ~/.claude/skills/ instead of .claude/skills for a personal install. The folder must contain SKILL.md.

Claude Code skills documentation · loads skills from .claude/skills/

Facts

Skill name
quick-calculator
GitHub stars
1.1k
Token cost
~252 tokens
SKILL.md length
87 words
Files
10
Skills in repo
7
Repo updated
First seen
Licence
Apache-2.0

At a glance

Quickly produces accurate calculation results when a user needs arithmetic, unit conversion, or mathematical formula solving.

  • Works in 3 steps: Calculation result: the output must… → Calculation steps: show the key steps in… → Result verification: provide a…
  • SKILL.md covers Output Requirements, Example and Notes
  • Instructions only: no scripts, shell commands, URLs or credentials in SKILL.md

What it does

Quick Calculator is an agent skill from alibaba/skill-up. Quickly produces accurate calculation results when a user needs arithmetic, unit conversion, or mathematical formula solving. Triggered when users say things like "help me calculate", "compute", "how much is", etc.

Its SKILL.md is about 250 tokens, which your agent loads only when the skill is triggered. The skill folder holds 14 other files (for example `README.md`, `evals/cases/basic-arithmetic.yaml` and `evals/cases/exit-code-mismatch.yaml`).

The repository describes itself as: An evaluation and evolution tool for Agent Skills. The licence is Apache-2.0.

Example prompts

  • “help me calculate”
  • “compute”
  • “how much is”
  • “/quick-calculator”

Workflow steps

3 steps, taken from the first numbered list in SKILL.md.

  1. Calculation result: the output must explicitly include a "calculation result" label
  2. Calculation steps: show the key steps in the calculation
  3. Result verification: provide a verification method for complex calculations

What it can do on your machine

Read from SKILL.md and the folder at commit 9d85640. It shows what the files ask for, not the result of running them.

  • Tool permissions

    Pre-approves nothing: there is no allowed-tools line, so your agent's usual permission prompts apply.

    From allowed-tools in the SKILL.md frontmatter.

  • Runs code

    No scripts in the folder and no shell commands in SKILL.md.

    From the folder's file list and the shell code blocks in SKILL.md.

  • Network

    No URLs in SKILL.md.

    From URLs in SKILL.md, links to its own repository left out.

  • Credentials

    Names no API keys, tokens, secrets or passwords.

    From names ending in _API_KEY, _TOKEN, _SECRET, _KEY or _PASSWORD in SKILL.md.

Context cost

Quick Calculator loads about 252 tokens when it runs. Until then it costs about 58 tokens; SKILL.md has 87 words of instructions outside code blocks.

Always · name and description, kept in context so the agent knows when to use it
~58
When it runs · the whole SKILL.md, loaded when a task matches
~252

Estimates: characters ÷ 4, the usual rule of thumb; real counts depend on the model's tokenizer. Scripts and assets cost tokens only if the agent reads them.

Safety

Auto-check passed

The automated check found no risky patterns in SKILL.md.

Automated static check — not a guarantee. Review scripts before installing. It scans the text of SKILL.md for risky patterns (piping downloads into a shell, reading credential files, hidden Unicode, destructive commands); files beside SKILL.md are not scanned.

SKILL.md

The full file from alibaba/skill-up at commit 9d85640, republished under its Apache-2.0 licence (© alibaba). 87 words, ~252 tokens.

Download SKILL.mdSave it as .claude/skills/quick-calculator/SKILL.md (or your agent's skills folder). This skill also uses 9 other files; get the full folder from GitHub.
name
quick-calculator
description
Quickly produces accurate calculation results when a user needs arithmetic, unit conversion, or mathematical formula solving. Triggered when users say things like "help me calculate", "compute", "how much is", etc.

Quick Calculator

You are a precise and efficient math calculation assistant. When users present calculation requests, you quickly provide accurate results.

Output Requirements

  1. Calculation result: the output must explicitly include a "calculation result" label
  2. Calculation steps: show the key steps in the calculation
  3. Result verification: provide a verification method for complex calculations

Example

User: Help me calculate 17 * 23 + 45

## Calculation Result

17 × 23 + 45 = 391 + 45 = 436

The calculation result is **436**.

Notes

  • The output must include the "calculation result" keyword
  • Numerical calculations must be precise with no errors
  • For division, state whether rounding is needed

© alibaba, Apache-2.0. Rendered from Markdown: HTML in the file is shown as text, images as links, and headings moved down two levels. Raw file

Files

SKILL.md and 9 other files in e2e/testdata/expect-short-circuit of alibaba/skill-up.

  • SKILL.md
  • README.md
  • evals/cases/basic-arithmetic.yaml
  • evals/cases/exit-code-mismatch.yaml
  • evals/eval.yaml
  • evals/evals.json
  • fixtures/expected/basic-arithmetic-grading.json
  • fixtures/expected/exit-code-mismatch-grading.json
  • fixtures/judge-inputs/basic-arithmetic.json
  • fixtures/judge-inputs/exit-code-mismatch.json

Open the folder on GitHubat commit 9d85640

Compare with similar skills

Quick Calculator next to the 5 skills that share the most tags, products or categories with it. Stars are the repository's; “used in” counts other GitHub owners with a copy.

Quick Calculator compared with similar skills
SkillStarsUsed inTokensAuto-checkLicenceRepo updated
Quick Calculator this skillalibaba/skill-up1.1k—~252Automated safety check: PassApache-2.0
Eol Resistor Calculatorsickn33/agentic-awesome-skills47k1 repos~3.5kAutomated safety check: PassMIT
Metric Calculatorjeremylongshore/tons-of-skills-marketplace2.8k—~563Automated safety check: PassMIT
Retention Calculatorjeremylongshore/tons-of-skills-marketplace2.8k—~573Automated safety check: PassMIT
Throughput Calculatorjeremylongshore/tons-of-skills-marketplace2.8k—~577Automated safety check: PassMIT
Buffer Calculatoraipoch/medical-research-skills2k—~1.8kAutomated safety check: PassMIT

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Questions about Quick Calculator

What does Quick Calculator do?

Quickly produces accurate calculation results when a user needs arithmetic, unit conversion, or mathematical formula solving. Quick Calculator is an agent skill from alibaba/skill-up. Quickly produces accurate calculation results when a user needs arithmetic, unit conversion, or mathematical formula solving.

How do I install Quick Calculator in Claude Code?

Run `npx skills add alibaba/skill-up --skill quick-calculator -a claude-code`. Or copy the skill folder (e2e/testdata/expect-short-circuit in alibaba/skill-up) into .claude/skills/quick-calculator in your project. Claude Code loads it when a task matches its description.

How do I install Quick Calculator in Codex?

Run `npx skills add alibaba/skill-up --skill quick-calculator -a codex`. Or copy the skill folder (e2e/testdata/expect-short-circuit in alibaba/skill-up) into .agents/skills/quick-calculator in your project. Codex loads it when a task matches its description.

Can I use Quick Calculator in Cursor, Gemini CLI or GitHub Copilot?

Cursor, Gemini CLI, GitHub Copilot and OpenCode also load SKILL.md folders. With the skills CLI, run `npx skills add alibaba/skill-up --skill quick-calculator -a cursor` (or -a gemini-cli, github-copilot or opencode for the others). To copy it by hand, put the folder in .cursor/skills/quick-calculator, .gemini/skills/quick-calculator, .github/skills/quick-calculator and .opencode/skills/quick-calculator in your project.

What does Quick Calculator need to run?

SKILL.md names no scripts, command-line tools or credentials: Quick Calculator is instructions for the agent only.

Does Quick Calculator access the network?

SKILL.md contains no URLs. Any network use would come from the scripts or tools the agent runs. This is read from the text; nothing was executed.

Is Quick Calculator safe to install?

Our automated static check of SKILL.md found no risky patterns, such as piping downloads into a shell, reading credential files or hidden Unicode. It is not a guarantee. Review the folder before installing.

What licence does Quick Calculator use?

Quick Calculator is published under the Apache-2.0 licence (the repository's licence). It allows redistribution, so the full SKILL.md is shown on this page.

How many tokens does Quick Calculator use?

About 252 tokens (SKILL.md is roughly 1k characters). Agents keep only the skill's name and description in context until a task matches; then they load SKILL.md in full.

What are the alternatives to Quick Calculator?

Skills that share tags, products or a category with Quick Calculator: Eol Resistor Calculator (sickn33/agentic-awesome-skills, 47k stars), Metric Calculator (jeremylongshore/tons-of-skills-marketplace, 2.8k stars), Retention Calculator (jeremylongshore/tons-of-skills-marketplace, 2.8k stars) and Throughput Calculator (jeremylongshore/tons-of-skills-marketplace, 2.8k stars). The comparison table on this page puts their stars, adoption, token cost, safety result and licence side by side.

Who maintains Quick Calculator?

alibaba (a GitHub organization) maintains it in alibaba/skill-up, which has 1,148 GitHub stars. The repository holds 7 skills in this directory. The repository was last updated on October 8, 2026.

Source: alibaba/skill-up on GitHub. Facts on this page come from the repository at the commit we read; the author's words are quoted as theirs.