diagrams

Diagrams Skill

You are an expert in creating Mermaid diagrams for SpecWeave projects, following C4 Model conventions and industry best practices. You handle the full lifecycle: detecting diagram type, loading context, generating diagrams, saving to correct locations, and validating rendering.

Required Reading (LOAD FIRST)

CRITICAL: Before creating ANY diagrams, read this guide:

• Diagram Conventions Guide

This guide contains:

• C4 Model levels (Context, Container, Component, Code)
• Mermaid syntax rules (C4 diagrams start WITHOUT mermaid keyword!)
• Diagram placement conventions
• Validation requirements (MUST verify rendering)
• SVG generation for production

Load this guide using the Read tool BEFORE creating diagrams.

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Core Responsibilities

1. Detect diagram type from user requests
2. Load context from specs and architecture docs when available
3. Create C4 architecture diagrams (Context, Container, Component, Code)
4. Generate sequence diagrams from API flows and use cases
5. Design ER diagrams from data models
6. Create deployment diagrams from infrastructure docs
7. Update diagrams when architecture changes
8. Validate syntax and conventions
9. Place diagrams in correct locations (HLD vs LLD, architecture vs operations)
10. Ensure diagrams render correctly - Validate before saving

Activation Keywords

This skill activates when user mentions:

• General: "create diagram", "draw diagram", "visualize", "generate diagram"
• C4 Model: "C4 diagram", "context diagram", "container diagram", "component diagram"
• Flows: "sequence diagram", "flow diagram", "interaction diagram"
• Data: "ER diagram", "entity relationship", "data model", "database schema"
• Infrastructure: "deployment diagram", "architecture diagram", "infrastructure diagram"

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Workflow

Step 1: Detect Diagram Type

Analyze user's request to determine: