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azure-diagrams-skill

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Generate professional technical diagrams with AI - Azure architecture (800+ icons), ERDs, business flowcharts, timelines, wireframes. For proposals, documentation & architecture reviews.

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# Azure Diagrams Skill

A comprehensive technical diagramming toolkit for **solutions architects**, **presales engineers**, and **developers**. Generate professional diagrams for proposals, documentation, and architecture reviews.

<img src="examples/microservices.png" alt="Microservices Architecture" width="600">
 
 Professional architecture diagram generated in seconds

##  Why this skill

Unlike browser-based or SaaS AI diagram tools, this runs **inside your coding agent**:

- **Your architecture never leaves your machine** - nothing is uploaded to a third-party service.
- **It reads your actual IaC** - point it at your Bicep/Terraform/ARM and diagram what you really deploy (see [iac-to-diagram](skills/azure-diagrams/references/iac-to-diagram.md)).
- **Diagrams are code** - version-controlled, diffable in pull requests, regenerated on demand.
- **Works in any AI tool** - Claude Code, GitHub Copilot, Cursor, Windsurf (see [AGENTS.md](AGENTS.md)).
- **Free and MIT-licensed**, on a pinned, verified library - every example is rendered in CI.

### How this differs

| | This skill | Browser / SaaS AI diagram tools |
|---|---|---|
| Where it runs | Your machine, in your coding agent | Their servers |
| Your architecture data | Stays local | Uploaded |
| Source of truth | Your Bicep / Terraform / ARM | Manual prompt |
| Output | Code-based, version-controlled PNG/SVG | Image / proprietary doc |
| Cost | Free (MIT) | Often subscription |

##  What You Can Create

| Diagram Type | Use Case | Example Prompt |
|--------------|----------|----------------|
| **Azure Architecture** | Solution designs, infrastructure docs | "Design a microservices architecture with AKS, Cosmos DB, and Service Bus" |
| **Business Process Flows** | Workflows, approvals, swimlanes | "Create a swimlane diagram for the invoice approval process" |
| **Entity Relationship (ERD)** | Database schemas, data models | "Generate an ERD for customer, order, and product entities" |
| **Timeline / Gantt** | Project roadmaps, migration plans | "Create a 6-month cloud migration timeline with 4 phases" |
| **UI Wireframes** | Dashboard mockups, screen layouts | "Design a KPI dashboard with charts, metrics, and data table" |
| **Sequence Diagrams** | Auth flows, API interactions | "Show the OAuth 2.0 authorization code flow" |
| **Network Topology** | Hub-spoke, VNets, hybrid cloud | "Create a hub-spoke network with shared services and 3 workloads" |
| **Well-Architected Patterns** | Reliability, Security, Cost, Performance, Operations | "Create a Zero Trust architecture diagram" |

##  Gallery

Modern Azure patterns, generated from the runnable examples in
[`references/common-patterns.md`](skills/azure-diagrams/references/common-patterns.md):

| Azure AI / RAG | Container Apps | Landing Zone Governance |
|:---:|:---:|:---:|
| ![Azure AI RAG application](https://raw.githubusercontent.com/cmb211087/azure-diagrams-skill/main/examples/ai-rag.png) | ![Container Apps microservices](https://raw.githubusercontent.com/cmb211087/azure-diagrams-skill/main/examples/container-apps.png) | ![Landing zone governance](https://raw.githubusercontent.com/cmb211087/azure-diagrams-skill/main/examples/landing-zone-governance.png) |

##  Output Formats

| Format | Use Case | Example |
|--------|----------|---------|
| **PNG (Recommended for sharing)** | GitHub, email, presentations | `outformat="png"` |
| SVG | Local docs, web embedding | `outformat="svg"` |
| Both | Maximum flexibility | `outformat=["svg", "png"]` |

> **Note:** SVG output from the `diagrams` library references external icon files via absolute paths. For sharing diagrams (GitHub, email), use PNG format. SVG works best for local documentation where the icon files are accessible.

##  Built For

- **Presales Engineers** - Create architecture diagrams for proposals in minutes
- **Solutions Architects** - Document designs with professional quality
- **Developers** - Generate ERDs, flowcharts, and technical documentation
- **Project Managers** - Build timelines and roadmaps
- **Business Analysts** - Create process flows and swimlane diagrams

##  800+ Azure Components

Azure service icons spanning 32 modules in the `diagrams` library (0.25.1). Run
`python skills/azure-diagrams/scripts/list_azure_nodes.py` to list every available class:

| Category | Services |
|----------|----------|
| **Compute** | VMs, AKS, Functions, App Service, Container Apps, Batch |
| **Networking** | VNets, Load Balancer, App Gateway, Front Door, Firewall, ExpressRoute |
| **Database** | SQL, Cosmos DB, PostgreSQL, MySQL, Redis, Synapse |
| **Storage** | Blob, Data Lake, Files, NetApp, Queue |
| **Integration** | Logic Apps, Service Bus, Event Grid, APIM, Data Factory |
| **Security** | Key Vault, Sentinel, Defender, Entra ID, Managed Identity |
| **AI/ML** | Azure OpenAI, Cognitive Services, ML Workspace, Bot Service |
| **Analytics** | Synapse, Databricks, Data Explorer, Stream Analytics, Event Hubs |
| **DevOps** | Azure DevOps, Pipelines, Repos, Boards, Artifacts |
| **IoT** | IoT Hub, IoT Edge, Digital Twins, Time Series Insights |

##  Installation

### Prerequisites
```bash
# Graphviz (system package), then restart your terminal:
winget install -e --id Graphviz.Graphviz   # Windows  (or: choco install graphviz)
brew install graphviz                       # macOS
sudo apt-get install graphviz               # Linux

# Python library (venv recommended); matplotlib/cairosvg are optional extras:
pip install "diagrams>=0.25.1"
```

> Full step-by-step setup with per-OS troubleshooting (Windows/macOS/Linux) is in
> **[SETUP.md](SETUP.md)**. This skill works across AI tools - Claude Code, GitHub Copilot,
> Cursor, Windsurf, and any Agent Skills / AGENTS.md compatible tool (see [AGENTS.md](AGENTS.md)).

**Recommended: GitHub CLI** (works across Copilot, Claude Code, Cursor and more; needs `gh` >= v2.90.0)
```bash
gh skill preview cmb211087/azure-diagrams-skill azure-diagrams # inspect first
gh skill install cmb211087/azure-diagrams-skill azure-diagrams # repo and skill are TWO args
```
Pin a version with `@<tag-or-sha>`, or use `--scope user` to install everywhere. `gh skill`
defaults to the GitHub Copilot agent; pass `--agent claude` (etc.) for other hosts.

**Claude Code via agr**
```bash
pip install agr
agr add cmb211087/azure-diagrams-skill/azure-diagrams   # agr uses a slash-joined path
```

**Manual**
```bash
git clone https://github.com/cmb211087/azure-diagrams-skill.git
# Claude Code (user or project scope):
cp -r azure-diagrams-skill/skills/azure-diagrams ~/.claude/skills/
cp -r azure-diagrams-skill/skills/azure-diagrams YOUR_PROJECT/.claude/skills/
# GitHub Copilot (repository scope):
cp -r azure-diagrams-skill/skills/azure-diagrams YOUR_REPO/.github/skills/
```

### For Cursor / Other Agent Skills Tools

Copy to your project's `.claude/skills/` directory - most Agent Skills compatible tools scan this path.

### For Claude.ai

Upload the skill folder to a Claude Project, or simply share the GitHub link and ask Claude to reference it.

### Verify Installation
```bash
# Check prerequisites are installed
python -c "import diagrams; print('diagrams installed')"
dot -V  # Should show graphviz version
```

### Example Prompts

**Architecture Diagram:**
```
Create an e-commerce platform architecture with:
- Front Door for global load balancing
- AKS for microservices
- Cosmos DB for product catalog
- Redis for session cache
- Service Bus for order processing
```

**Business Process Flow:**
```
Create a swimlane diagram for employee onboarding with lanes for:
- HR, IT, Manager, and New Employee
Show the process from offer acceptance to first day completion
```

**ERD Diagram:**
```
Generate an entity relationship diagram for an order management system with:
- Customers, Orders, OrderItems, Products, Categories
- Show primary keys, foreign keys, and cardinality
```

**Project Timeline:**
```
Create a cloud migration timeline showing:
- Phase 1: Assessment (Month 1-2)
- Phase 2: Pilot Migration (Month 3-4)
- Phase 3: Production Migration (Month 5-8)
- Phase 4: Optimization (Month 9-12)
```

**UI Wireframe:**
```
Design a sales dashboard wireframe with:
- Header with logo and navigation
- KPI cards showing revenue, deals, conversion rate
- Line chart for monthly trends
- Table of recent opportunities
```

<img src="examples/data-platform.png" alt="Data Platform Architecture" width="500">
 
 Data platform with Databricks, Synapse, and Data Lake

##  Bonus: Generate from Infrastructure Code

Can also create diagrams directly from your IaC:

```
Read the Bicep files in /infra and generate an architecture diagram 
showing all resources grouped by subnet
```

```
Analyze our Terraform modules and create a data flow diagram
```

```
Parse azure-pipelines.yml and create a CI/CD deployment diagram
```

Supports: **Bicep** • **Terraform** • **ARM Templates** • **Azure Pipelines** • **GitHub Actions**

<img src="examples/from-bicep.png" alt="Generated from Bicep" width="500">
 
 Architecture generated from Bicep with actual resource names

##  What's Included

```
skills/azure-diagrams/
├── SKILL.md                              # Main skill instructions
├── README.md                             # Skill documentation
├── references/
│   ├── azure-components.md               # 700+ Azure components + Nov 2025 icons
│   ├── common-patterns.md                # Architecture patterns (SVG output)
│   ├── business-process-flows.md         # Workflow & swimlane patterns
│   ├── entity-relationship-diagrams.md   # ERD patterns
│   ├── timeline-gantt-diagrams.md        # Timeline patterns
│   ├── ui-wireframe-diagrams.md          # Wireframe patterns
│   ├── iac-to-diagram.md                 # Generate from Bicep/Terraform
│   ├── large-diagram-strategies.md       # Handling 50+ node diagrams
│   ├── preventing-overlaps.md            # Layout troubleshooting
│   └── quick-reference.md                # Snippets + WAF patterns
└── scripts/
    ├── generate_diagram.py               # Secure interactive generator
    └── verify_installation.py            # Check prerequisites
```

##  Compatibility

| Tool | Status |
|------|--------|
| GitHub Copilot | ✅ |
| Claude | ✅ |
| VS Code Copilot | ✅ |

Built on the [Agent Skills](https://agentskills.io) open standard.

##  Example Gallery

| Architecture | Business Flow | Data Platform |
|--------------|---------------|---------------|
| <img src="examples/web-app.png" width="250"> | <img src="examples/pipeline.png" width="250"> | <img src="examples/data-platform.png" width="250"> |
| 3-Tier Web App | CI/CD Pipeline | Analytics Platform |

| Microservices | Serverless | From Terraform |
|---------------|------------|----------------|
| <img src="examples/microservices.png" width="250"> | <img src="examples/serverless.png" width="250"> | <img src="examples/from-terraform.png" width="250"> |
| AKS + Services | Event-Driven | IaC Generated |

### Well-Architected Framework Examples

| WAF Reliability | WAF Security | Large Diagram Strategy |
|-----------------|--------------|------------------------|
| <img src="examples/waf-reliability.png" width="250"> | <img src="examples/waf-security.png" width="250"> | <img src="examples/large-diagram-split.png" width="250"> |
| Multi-Region Failover | Zero Trust Architecture | Split Views Index |

##  Security

The diagram generator uses sandboxed execution with multiple protection layers:

| Protection | Description |
|------------|-------------|
| **Import Whitelisting** | Only `diagrams`, `graphviz`, `matplotlib`, `numpy` libraries allowed |
| **AST Code Validation** | Blocks `exec`, `eval`, `open`, dangerous attributes |
| **Subprocess Isolation** | Code runs in isolated process with minimal environment |
| **Input Sanitization** | Diagram names and output paths are sanitized |
| **Timeout Enforcement** | 60-second execution limit prevents infinite loops |
| **Path Restriction** | Output limited to allowed directories |

This prevents arbitrary code execution when processing diagram code.

##  Contributing

Contributions welcome! Ideas:
- Additional architecture patterns
- New diagram types
- More Azure service coverage
- Bug fixes and improvements

See [CONTRIBUTING.md](CONTRIBUTING.md) for guidelines.

##  License

MIT License - free to use, modify, and distribute.

##  Credits

- [diagrams](https://diagrams.mingrammer.com/) - Diagram as Code library
- [Graphviz](https://graphviz.org/) - Graph visualization
- [Agent Skills](https://agentskills.io) - Open standard for AI skills

##  Support

If this skill saves you time, you can support its development:

[![Buy me a coffee](https://img.buymeacoffee.com/button-api/?text=Buy%20me%20a%20coffee&emoji=&slug=carlbrindle&button_colour=FFDD00&font_colour=000000&font_family=Cookie&outline_colour=000000&coffee_colour=ffffff)](https://www.buymeacoffee.com/carlbrindle)

azure-diagrams-skill

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