azure-resource-visualizer

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SKILL.md About

---
name: azure-resource-visualizer
description: Analyze Azure resource groups and generate detailed Mermaid architecture diagrams showing the relationships between individual resources. Use this skill when the user asks for a diagram of their Azure resources or help in understanding how the resources relate to each other.
license: Complete terms in LICENSE.txt
metadata:
  author: Tom Meschter (tom.meschter@microsoft.com)
---

# Azure Resource Visualizer - Architecture Diagram Generator

A user may ask for help understanding how individual resources fit together, or to create a diagram showing their relationships. Your mission is to examine Azure resource groups, understand their structure and relationships, and generate comprehensive Mermaid diagrams that clearly illustrate the architecture.

## Core Responsibilities

1. **Resource Group Discovery**: List available resource groups when not specified
2. **Deep Resource Analysis**: Examine all resources, their configurations, and interdependencies
3. **Relationship Mapping**: Identify and document all connections between resources
4. **Diagram Generation**: Create detailed, accurate Mermaid diagrams
5. **Documentation Creation**: Produce clear markdown files with embedded diagrams

## Workflow Process

### Step 1: Resource Group Selection

If the user hasn't specified a resource group:

1. Use your tools to query available resource groups. If you do not have a tool for this, use `az`.
2. Present a numbered list of resource groups with their locations
3. Ask the user to select one by number or name
4. Wait for user response before proceeding

If a resource group is specified, validate it exists and proceed.

### Step 2: Resource Discovery & Analysis

Once you have the resource group:

1. **Query all resources** in the resource group using Azure MCP tools or `az`.
2. **Analyze each resource** type and capture:
   - Resource name and type
   - SKU/tier information
   - Location/region
   - Key configuration properties
   - Network settings (VNets, subnets, private endpoints)
   - Identity and access (Managed Identity, RBAC)
   - Dependencies and connections

3. **Map relationships** by identifying:
   - **Network connections**: VNet peering, subnet assignments, NSG rules, private endpoints
   - **Data flow**: Apps → Databases, Functions → Storage, API Management → Backends
   - **Identity**: Managed identities connecting to resources
   - **Configuration**: App Settings pointing to Key Vaults, connection strings
   - **Dependencies**: Parent-child relationships, required resources

### Step 3: Diagram Construction

Create a **detailed Mermaid diagram** using the `graph TB` (top-to-bottom) or `graph LR` (left-to-right) format:

**Diagram Structure Guidelines:**

```mermaid
graph TB
 %% Use subgraphs to group related resources
 subgraph "Resource Group: [name]"
 subgraph "Network Layer"
 VNET[Virtual Network 10.0.0.0/16]
 SUBNET1[Subnet: web 10.0.1.0/24]
 SUBNET2[Subnet: data 10.0.2.0/24]
 NSG[Network Security Group]
 end
 
 subgraph "Compute Layer"
 APP[App Service Plan: P1v2]
 FUNC[Function App Runtime: .NET 8]
 end
 
 subgraph "Data Layer"
 SQL[Azure SQL Database DTU: S1]
 STORAGE[Storage Account Type: Standard LRS]
 end
 
 subgraph "Security & Identity"
 KV[Key Vault]
 MI[Managed Identity]
 end
 end
 
 %% Define relationships with descriptive labels
 APP -->|"HTTPS requests"| FUNC
 FUNC -->|"SQL connection"| SQL
 FUNC -->|"Blob/Queue access"| STORAGE
 APP -->|"Uses identity"| MI
 MI -->|"Access secrets"| KV
 VNET --> SUBNET1
 VNET --> SUBNET2
 SUBNET1 --> APP
 SUBNET2 --> SQL
 NSG -->|"Rules applied to"| SUBNET1
```

**Key Diagram Requirements:**

- **Group by layer or purpose**: Network, Compute, Data, Security, Monitoring
- **Include details**: SKUs, tiers, important settings in node labels (use ` ` for line breaks)
- **Label all connections**: Describe what flows between resources (data, identity, network)
- **Use meaningful node IDs**: Abbreviations that make sense (APP, FUNC, SQL, KV)
- **Visual hierarchy**: Subgraphs for logical grouping
- **Connection types**:
 - `-->` for data flow or dependencies
 - `-.->` for optional/conditional connections
 - `==>` for critical/primary paths

**Resource Type Examples:**
- App Service: Include plan tier (B1, S1, P1v2)
- Functions: Include runtime (.NET, Python, Node)
- Databases: Include tier (Basic, Standard, Premium)
- Storage: Include redundancy (LRS, GRS, ZRS)
- VNets: Include address space
- Subnets: Include address range

### Step 4: File Creation

Use [template-architecture.md](./assets/template-architecture.md) as a template and create a markdown file named `[resource-group-name]-architecture.md` with:

1. **Header**: Resource group name, subscription, region
2. **Summary**: Brief overview of the architecture (2-3 paragraphs)
3. **Resource Inventory**: Table listing all resources with types and key properties
4. **Architecture Diagram**: The complete Mermaid diagram
5. **Relationship Details**: Explanation of key connections and data flows
6. **Notes**: Any important observations, potential issues, or recommendations

## Operating Guidelines

### Quality Standards

- **Accuracy**: Verify all resource details before including in diagram
- **Completeness**: Don't omit resources; include everything in the resource group
- **Clarity**: Use clear, descriptive labels and logical grouping
- **Detail Level**: Include configuration details that matter for architecture understanding
- **Relationships**: Show ALL significant connections, not just obvious ones

### Tool Usage Patterns

1. **Azure MCP Search**: 
   - Use `intent="list resource groups"` to discover resource groups
   - Use `intent="list resources in group"` with group name to get all resources
   - Use `intent="get resource details"` for individual resource analysis
   - Use `command` parameter when you need specific Azure operations

2. **File Creation**:
   - Always create in workspace root or a `docs/` folder if it exists
   - Use clear, descriptive filenames: `[rg-name]-architecture.md`
   - Ensure Mermaid syntax is valid (test syntax mentally before output)

3. **Terminal (when needed)**:
 - Use Azure CLI for complex queries not available via MCP
 - Example: `az resource list --resource-group <name> --output json`
 - Example: `az network vnet show --resource-group <name> --name <vnet-name>`

### Constraints & Boundaries

**Always Do:**
- ✅ List resource groups if not specified
- ✅ Wait for user selection before proceeding
- ✅ Analyze ALL resources in the group
- ✅ Create detailed, accurate diagrams
- ✅ Include configuration details in node labels
- ✅ Group resources logically with subgraphs
- ✅ Label all connections descriptively
- ✅ Create a complete markdown file with diagram

**Never Do:**
- ❌ Skip resources because they seem unimportant
- ❌ Make assumptions about resource relationships without verification
- ❌ Create incomplete or placeholder diagrams
- ❌ Omit configuration details that affect architecture
- ❌ Proceed without confirming resource group selection
- ❌ Generate invalid Mermaid syntax
- ❌ Modify or delete Azure resources (read-only analysis)

### Edge Cases & Error Handling

- **No resources found**: Inform user and verify resource group name
- **Permission issues**: Explain what's missing and suggest checking RBAC
- **Complex architectures (50+ resources)**: Consider creating multiple diagrams by layer
- **Cross-resource-group dependencies**: Note external dependencies in diagram notes
- **Resources without clear relationships**: Group in "Other Resources" section

## Output Format Specifications

### Mermaid Diagram Syntax
- Use `graph TB` (top-to-bottom) for vertical layouts
- Use `graph LR` (left-to-right) for horizontal layouts (better for wide architectures)
- Subgraph syntax: `subgraph "Descriptive Name"`
- Node syntax: `ID["Display Name Details"]`
- Connection syntax: `SOURCE -->|"Label"| TARGET`

### Markdown Structure
- Use H1 for main title
- Use H2 for major sections
- Use H3 for subsections
- Use tables for resource inventories
- Use bullet lists for notes and recommendations
- Use code blocks with `mermaid` language tag for diagrams

## Example Interaction

**User**: "Analyze my production resource group"

**Agent**:
1. Lists all resource groups in subscription
2. Asks user to select: "Which resource group? 1) rg-prod-app, 2) rg-dev-app, 3) rg-shared"
3. User selects: "1"
4. Queries all resources in rg-prod-app
5. Analyzes: App Service, Function App, SQL Database, Storage Account, Key Vault, VNet, NSG
6. Identifies relationships: App → Function, Function → SQL, Function → Storage, All → Key Vault
7. Creates detailed Mermaid diagram with subgraphs
8. Generates `rg-prod-app-architecture.md` with complete documentation
9. Displays: "Created architecture diagram in rg-prod-app-architecture.md. Found 7 resources with 8 key relationships."

## Success Criteria

A successful analysis includes:
- ✅ Valid resource group identified
- ✅ All resources discovered and analyzed
- ✅ All significant relationships mapped
- ✅ Detailed Mermaid diagram with proper grouping
- ✅ Complete markdown file created
- ✅ Clear, actionable documentation
- ✅ Valid Mermaid syntax that renders correctly
- ✅ Professional, architect-level output

Your goal is to provide clarity and insight into Azure architectures, making complex resource relationships easy to understand through excellent visualization.