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Agent skill

Calcpad Core Developer

by imartincei in imartincei/CalcpadCE

Expert developer for Calcpad.Core - the mathematical parsing and calculation engine.

MITAuto-check: notesData & Analytics

Install Calcpad Core Developer

skills CLI
$ npx skills add imartincei/CalcpadCE --skill calcpad-core-developer -a claude-code

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

GitHub CLI
$ gh skill install imartincei/CalcpadCE calcpad-core-developer --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/imartincei/CalcpadCE.git skills-src && mkdir -p .claude/skills && cp -r skills-src/.claude/skills/calcpad-core-developer .claude/skills/calcpad-core-developer && 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
calcpad-core-developer
GitHub stars
110
Token cost
~840 tokens
SKILL.md length
252 words
Files
2
Skills in repo
6
Repo updated
First seen
Licence
MIT

At a glance

Expert developer for Calcpad.Core - the mathematical parsing and calculation engine.

  • Works in 4 steps: Identify the calculator class based on… → Implement the function in the… → Register in the function table → …
  • Working on math functions
  • SKILL.md covers Core Capabilities, Reference Files, Solution Context and Adding New Built-in Functions, plus 2 more sections
  • Instructions only: no scripts, shell commands, URLs or credentials in SKILL.md

What it does

Calcpad Core Developer is an agent skill from imartincei/CalcpadCE. Expert developer for Calcpad.Core - the mathematical parsing and calculation engine. Use when working on math functions, calculator classes, unit handling, MathParser, plotting, matrix/vector operations, or the solver.

Its SKILL.md is about 840 tokens, which your agent loads only when the skill is triggered. The skill folder holds 2 other files (for example `reference/architecture-and-testing.md`).

It sits in Data & Analytics, covering Data visualization. The repository describes itself as: Calcpad Community Edition. The licence is MIT.

When your agent uses it

  • Working on math functions
  • Calculator classes
  • Matrix/vector operations

Example prompts

  • “/calcpad-core-developer”

Requirements

  • Pre-approved tools (allowed-tools): Read, Write, Edit, Glob, Grep, Bash

Workflow steps

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

  1. Identify the calculator class based on function domain
  2. Implement the function in the appropriate calculator
  3. Register in the function table
  4. Update Calcpad.Highlighter to match

What it can do on your machine

Read from SKILL.md and the folder at commit 0b20dba. It shows what the files ask for, not the result of running them.

  • Tool permissions

    Pre-approves these tools, so the agent can use them without asking each time:

    • Read
    • Write
    • Edit
    • Glob
    • Grep
    • Bash

    From allowed-tools in the SKILL.md frontmatter.

  • Runs code

    No scripts in the folder and no shell commands in SKILL.md (its code samples are csharp).

    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

Calcpad Core Developer loads about 840 tokens when it runs. Until then it costs about 60 tokens; SKILL.md has 252 words of instructions outside code blocks.

Always · name and description, kept in context so the agent knows when to use it
~60
When it runs · the whole SKILL.md, loaded when a task matches
~840

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: notes

The automated check noted patterns worth knowing about, such as sudo or a known installer.

  • NotePre-approves every shell command (allowed-tools: Bash)SKILL.md
    allowed-tools: Read, Write, Edit, Glob, Grep, Bash

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 imartincei/CalcpadCE at commit 0b20dba, republished under its MIT licence (© imartincei). 252 words, ~840 tokens.

Download SKILL.mdSave it as .claude/skills/calcpad-core-developer/SKILL.md (or your agent's skills folder). This skill also uses 1 other file; get the full folder from GitHub.
name
calcpad-core-developer
description
Expert developer for Calcpad.Core - the mathematical parsing and calculation engine. Use when working on math functions, calculator classes, unit handling, MathParser, plotting, matrix/vector operations, or the solver.
allowed-tools
Read, Write, Edit, Glob, Grep, Bash

Calcpad Core Developer

Expert agent for developing Calcpad.Core - the mathematical parsing and calculation engine.

You are an expert C# developer specializing in the Calcpad.Core library. You understand mathematical expression parsing, complex number calculations, matrix/vector operations, unit handling, and the plotting system. You write performant, mathematically correct code following existing patterns.

Core Capabilities

  • Implement new mathematical functions
  • Extend calculator classes (Real, Complex, Matrix, Vector)
  • Add new units of measurement
  • Fix parsing bugs in MathParser
  • Extend plotting capabilities
  • Optimize calculation performance

Reference Files

Read reference/architecture-and-testing.md for the directory structure, key classes (MathParser, Calculator hierarchy, Unit system), matrix type hierarchy, plotting system, external dependencies, syntax reference, and testing commands.

Solution Context

Project Dependency Graph
Calcpad.Cli (Command Line)
├── Calcpad.Core  ← YOU ARE HERE
├── Calcpad.OpenXml
└── PyCalcpad (API wrapper)
    └── Calcpad.Core  ← YOU ARE HERE

Calcpad.Server (Web API)
├── Calcpad.Core  ← YOU ARE HERE
└── Calcpad.Highlighter
ProjectPurposeIntegration Notes
Calcpad.HighlighterLinting/tokenizationMust sync function names, parameter counts
PyCalcpadPython/API wrapperExposes Core's Calculator and Parser
Calcpad.OpenXmlDocument exportUses Core's output for rendering

Adding New Built-in Functions

  1. Identify the calculator class based on function domain:

    • Scalar operations → RealCalculator or ComplexCalculator
    • Vector operations → VectorCalculator
    • Matrix operations → MatrixCalculator

  2. Implement the function in the appropriate calculator:

csharp
private static double MyNewFunction(double x, double y)
{
    return result;
}
  1. Register in the function table:
csharp
_functions["mynewfunc"] = (args) => MyNewFunction(args[0], args[1]);
  1. Update Calcpad.Highlighter to match:
    • Add to CalcpadBuiltIns.Functions
    • Add signature to FunctionSignatures.cs

Adding New Units

csharp
// Format: name, factor to base SI, dimension array
AddUnit("kN", 1000.0, [1, 1, -2, 0, 0, 0, 0]);  // kilonewtons
AddUnit("psi", 6894.76, [-1, 1, -2, 0, 0, 0, 0]);  // pounds per square inch

// Dimension indices: [length, mass, time, current, temperature, amount, luminosity]

After adding, update CalcpadBuiltIns.Units in Highlighter.

Workflow

  1. Understand the math - Ensure correct mathematical implementation
  2. Find existing patterns - Match code style of similar functions
  3. Load reference/architecture-and-testing.md for structure, class hierarchy, and testing
  4. Implement in Core - Add to appropriate calculator class
  5. Sync Highlighter - Update function lists and signatures
  6. Test - Run Calcpad.Tests and verify manually

© imartincei, MIT. 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 1 other file in .claude/skills/calcpad-core-developer of imartincei/CalcpadCE.

  • SKILL.md
  • reference/architecture-and-testing.md

Open the folder on GitHubat commit 0b20dba

Compare with similar skills

Calcpad Core Developer 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.

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SeabornzLanqing/codex-claude-academic-skills4.7k15 repos~4.9kAutomated safety check: PassBSD-3-Clause
Plot From DataTrae1ounG/paper-plot-skills8691 repos~583Automated safety check: PassNone

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Categories

Questions about Calcpad Core Developer

What does Calcpad Core Developer do?

Expert developer for Calcpad.Core - the mathematical parsing and calculation engine. Calcpad Core Developer is an agent skill from imartincei/CalcpadCE.Core - the mathematical parsing and calculation engine.

When should I use Calcpad Core Developer?

Calcpad Core Developer fits situations like: working on math functions; calculator classes; matrix/vector operations.

How do I install Calcpad Core Developer in Claude Code?

Run `npx skills add imartincei/CalcpadCE --skill calcpad-core-developer -a claude-code`. Or copy the skill folder (.claude/skills/calcpad-core-developer in imartincei/CalcpadCE) into .claude/skills/calcpad-core-developer in your project. Claude Code loads it when a task matches its description.

How do I install Calcpad Core Developer in Codex?

Run `npx skills add imartincei/CalcpadCE --skill calcpad-core-developer -a codex`. Or copy the skill folder (.claude/skills/calcpad-core-developer in imartincei/CalcpadCE) into .agents/skills/calcpad-core-developer in your project. Codex loads it when a task matches its description.

Can I use Calcpad Core Developer 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 imartincei/CalcpadCE --skill calcpad-core-developer -a cursor` (or -a gemini-cli, github-copilot or opencode for the others). To copy it by hand, put the folder in .cursor/skills/calcpad-core-developer, .gemini/skills/calcpad-core-developer, .github/skills/calcpad-core-developer and .opencode/skills/calcpad-core-developer in your project.

What does Calcpad Core Developer need to run?

SKILL.md names no scripts, command-line tools or credentials: Calcpad Core Developer is instructions for the agent only. Its frontmatter pre-approves these tools: Read, Write, Edit, Glob, Grep, Bash.

Does Calcpad Core Developer 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 Calcpad Core Developer safe to install?

Our automated static check of SKILL.md found notes only (pre-approves every shell command (allowed-tools: bash)), nothing it rates as a warning. It is not a guarantee. Review the folder before installing.

What licence does Calcpad Core Developer use?

Calcpad Core Developer is published under the MIT licence (the repository's licence). It allows redistribution, so the full SKILL.md is shown on this page.

How many tokens does Calcpad Core Developer use?

About 840 tokens (SKILL.md is roughly 3.4k 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 Calcpad Core Developer?

Skills that share tags, products or a category with Calcpad Core Developer: Matplotlib (zLanqing/codex-claude-academic-skills, 4.7k stars), Chart Visualization (bytedance/deer-flow, 84k stars), Scientific Visualization (mims-harvard/OptimusKG, 146 stars) and Seaborn (zLanqing/codex-claude-academic-skills, 4.7k stars). The comparison table on this page puts their stars, adoption, token cost, safety result and licence side by side.

Who maintains Calcpad Core Developer?

imartincei (a GitHub user) maintains it in imartincei/CalcpadCE, which has 110 GitHub stars. The repository holds 6 skills in this directory. The repository was last updated on October 8, 2026.

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