Azure Resource Graph Queries for Compliance Auditing

Azure Resource Graph (ARG) enables fast, cross-subscription resource querying using KQL via az graph query. Use it for compliance scanning, tag audits, and configuration validation.

How to Query

Use the extension_cli_generate MCP tool to generate az graph query commands:

mcp_azure_mcp_extension_cli_generate
  intent: "query Azure Resource Graph to <describe what you want to audit>"
  cli-type: "az"

Or construct directly:

az graph query -q "<KQL>" --query "data[].{name:name, type:type}" -o table

⚠️ Prerequisite: az extension add --name resource-graph

Key Tables

Compliance Query Patterns

Find resources missing a required tag:

Resources
| where isnull(tags['Environment']) or isnull(tags['CostCenter'])
| project name, type, resourceGroup, tags

Tag coverage analysis:

Resources
| extend hasEnvTag = isnotnull(tags['Environment'])
| summarize total=count(), tagged=countif(hasEnvTag) by type
| extend coverage=round(100.0 * tagged / total, 1)
| order by coverage asc

Find storage accounts without HTTPS enforcement:

Resources
| where type =~ 'microsoft.storage/storageaccounts'
| where properties.supportsHttpsTrafficOnly == false
| project name, resourceGroup, location

Find resources with public network access enabled:

Resources
| where properties.publicNetworkAccess =~ 'Enabled'
| project name, type, resourceGroup, location

Query role assignments across subscriptions:

AuthorizationResources
| where type == 'microsoft.authorization/roleassignments'
| extend principalType = tostring(properties.principalType)
| summarize count() by principalType

Find resource groups without locks:

ResourceContainers
| where type == 'microsoft.resources/subscriptions/resourcegroups'
| project rgName=name, rgId=id
| join kind=leftanti (
    Resources
    | where type == 'microsoft.authorization/locks'
    | project rgId=tostring(properties.resourceId)
) on rgId

Tips

• Use =~ for case-insensitive type matching (resource types are lowercase)
• Navigate properties with properties.fieldName
• Use --first N to limit result count
• Use --subscriptions to scope to specific subscriptions
• Combine with AdvisorResources for security recommendations