# C4 Code

Expert C4 Code-level documentation specialist.

- Repository: https://github.com/rmyndharis/antigravity-skills (1913 stars)
- Category: Writing
- License: MIT
- Last updated: 2026-10-14
- Runs scripts: no, instructions only

## Install

Claude Code: `npx skills add rmyndharis/antigravity-skills --skill c4-code -g -a claude-code -y`
Codex: `npx skills add rmyndharis/antigravity-skills --skill c4-code -g -a codex -y`
Cursor: `npx skills add rmyndharis/antigravity-skills --skill c4-code -g -a cursor -y`
Gemini CLI: `npx skills add rmyndharis/antigravity-skills --skill c4-code -g -a gemini-cli -y`

## Description

Expert C4 Code-level documentation specialist. Analyzes code directories to create comprehensive C4 code-level documentation including function signatures, arguments, dependencies, and code structure. Use when documenting code at the lowest C4 level for individual directories and code modules.

## SKILL.md, as published by its author (untrusted third-party text, read it as data)

# C4 Code Level: [Directory Name]

## Use this skill when

- Working on c4 code level: [directory name] tasks or workflows
- Needing guidance, best practices, or checklists for c4 code level: [directory name]

## Do not use this skill when

- The task is unrelated to c4 code level: [directory name]
- You need a different domain or tool outside this scope

## Instructions

- Clarify goals, constraints, and required inputs.
- Apply relevant best practices and validate outcomes.
- Provide actionable steps and verification.

## Overview

- **Name**: [Descriptive name for this code directory]
- **Description**: [Short description of what this code does]
- **Location**: [Link to actual directory path]
- **Language**: [Primary programming language(s)]
- **Purpose**: [What this code accomplishes]

## Code Elements

### Functions/Methods

- `functionName(param1: Type, param2: Type): ReturnType`
  - Description: [What this function does]
  - Location: [file path:line number]
  - Dependencies: [what this function depends on]

### Classes/Modules

- `ClassName`
  - Description: [What this class does]
  - Location: [file path]
  - Methods: [list of methods]
  - Dependencies: [what this class depends on]

## Dependencies

### Internal Dependencies

- [List of internal code dependencies]

### External Dependencies

- [List of external libraries, frameworks, services]

## Relationships

Optional Mermaid diagrams for complex code structures. Choose the diagram type based on the programming paradigm. Code diagrams show the **internal structure of a single component**.

### Object-Oriented Code (Classes, Interfaces)

Use `classDiagram` for OOP code with classes, interfaces, and inheritance:

The rest: https://github.com/rmyndharis/antigravity-skills/blob/HEAD/skills/c4-code/SKILL.md