C4 Context

If you're documenting systems with the C4 model, this handles the top layer: system context diagrams, personas, user journeys, and external dependencies. It walks you through identifying who uses your system (human and programmatic), what features they need, and what external systems you integrate with. The output is Mermaid diagrams and structured markdown meant to be readable by non-technical stakeholders. Good for kicking off architecture documentation or explaining a system's boundaries to new team members. It explicitly stays at the context level and won't dive into containers, components, or code, so you'll need those other C4 skills if you're going deeper.

skills.sh installs: 273
GitHub stars: 39.4K
last updated: Jun 3, 2026

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Install

$ npx -y skills add sickn33/antigravity-awesome-skills --skill c4-context --agent claude-code

Installs into .claude/skills of the current project.

Files

C4 Context Level: System Context

Use this skill when

Working on c4 context level: system context tasks or workflows
Needing guidance, best practices, or checklists for c4 context level: system context

Do not use this skill when

The task is unrelated to c4 context level: system context
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.

System Overview

Short Description

[One-sentence description of what the system does]

Long Description

[Detailed description of the system's purpose, capabilities, and the problems it solves]

Personas

[Persona Name]

Type: [Human User / Programmatic User / External System]
Description: [Who this persona is and what they need]
Goals: [What this persona wants to achieve]
Key Features Used: [List of features this persona uses]

System Features

[Feature Name]

Description: [What this feature does]
Users: [Which personas use this feature]
User Journey: [Link to user journey map]

SKILL.md on GitHub

Details

Repository: github.com/sickn33/antigravity-awesome-skills
First seen: Jun 3, 2026