Skills C4 Component Level: [Component Name]
📦

C4 Component Level: [Component Name]

Safe

Create C4 Component Architecture Diagrams

Struggle with translating code-level documentation into clear component architecture? This skill synthesizes C4 Code artifacts into Component-level diagrams with defined boundaries, interfaces, and relationships.

Supports: Claude Codex Code(CC)
📊 69 Adequate
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Test it

Using "C4 Component Level: [Component Name]". Synthesize authentication code files into components

Expected outcome:

  • AuthService Component: Handles user authentication, token generation, and session management
  • AuthRepository Component: Manages credential storage and retrieval
  • AuthProvider Component: Integrates with external identity providers

Using "C4 Component Level: [Component Name]". Create component diagram for API container

Expected outcome:

  • Mermaid diagram showing ApiController, RequestValidator, ResponseFormatter, and DatabaseConnector components within the API container boundary, with labeled relationships showing data flow

Security Audit

Safe
v1 • 2/25/2026

This is a prompt-only documentation skill with no executable code. Static analysis scanned 0 files and found 0 potential security issues with a risk score of 0/100. The skill generates C4 architecture component documentation and Mermaid diagrams without accessing external systems, executing commands, or handling sensitive data.

0
Files scanned
0
Lines analyzed
0
findings
1
Total audits
No security issues found
Audited by: claude

Quality Score

38
Architecture
100
Maintainability
87
Content
31
Community
100
Security
74
Spec Compliance

What You Can Build

Architecture Documentation for New Systems

Transform scattered code documentation into cohesive component architecture diagrams for new or refactored systems.

Component Boundary Definition

Define clear boundaries between authentication, data access, and business logic components during system redesign.

Onboarding Documentation

Generate comprehensive component documentation to help new team members understand system architecture quickly.

Try These Prompts

Basic Component Overview
Create C4 Component documentation for [Component Name]. Purpose: [brief description]. Primary technology: [tech stack]. List 3-5 key features and identify 2-3 main interfaces.
Component Diagram Generation
Generate a Mermaid C4Component diagram for [Container Name]. Include components: [list components], their types, descriptions, and show relationships between them and any external systems.
Interface Documentation
Document all interfaces for the [Component Name] component. For each interface specify: protocol (REST/GraphQL/gRPC/Events), description of what it provides, and list all operations with their signatures and return types.
Full Component Synthesis
Synthesize the following C4 Code files into component-level documentation: [list files]. For each resulting component provide: name, description, type, technology, purpose, features, code elements, interfaces, dependencies, and a Mermaid component diagram.

Best Practices

  • Keep components focused on a single responsibility or bounded context
  • Document both provided interfaces and consumed dependencies for each component
  • Use consistent naming conventions that reflect component purpose and type

Avoid

  • Creating components that are too granular (single class per component)
  • Omitting interface protocols which makes integration unclear
  • Showing container-level relationships instead of component-level detail

Frequently Asked Questions

What is the difference between C4 Component and C4 Container level?
Container level shows high-level deployment units like applications and databases. Component level zooms into a single container to show logical components within it, their responsibilities, and how they interact.
Do I need to provide actual code for this skill to work?
No, this skill works with C4 Code-level documentation files. It synthesizes existing documentation rather than analyzing source code directly.
What Mermaid syntax should I use for component diagrams?
Use C4Component diagram type with Container_Boundary to show components within a single container. Include Component, ComponentDb, Container_Ext, and System_Ext elements with Rel statements for relationships.
How many components should a typical container have?
There is no fixed number. Focus on logical boundaries and single responsibilities. A well-structured container typically has 5-15 components depending on complexity.
Can this skill help identify missing components?
Yes, by analyzing code-level documentation gaps and unclear responsibilities, the skill can suggest additional components needed for complete architecture coverage.
Should I document external systems at component or container level?
Document external systems at both levels. At component level, show which specific components interact with external systems. At container level, show the container-to-system relationships.

Developer Details

File structure

📄 SKILL.md