ms-sentinel-mcp-server

# Data Connector Visibility and API Limitations in Azure Sentinel ## Overview Azure Sentinel's data connector retrieval process is constrained by significant API limitations that impact the comprehensiveness of connector discovery and management. ## Connector Visibility Hierarchy ### Visible Connectors (Programmatically Retrievable) 1. **User-Deployed Connectors** - Created via ARM (Azure Resource Manager) templates - Deployed through Azure Functions - Configured using Logic Apps - Manually configured by security administrators ### Hidden/Invisible Connectors 1. **Built-in Connectors** - Examples: - Azure Activity - Microsoft Threat Protection - Azure Active Directory - Fundamental to core security monitoring - Cannot be retrieved via standard API calls 2. **Gallery-Deployed Connectors** - Pre-configured connectors from Microsoft's security ecosystem - Examples: - Cisco Umbrella - ZScaler - Various third-party security solutions - Typically added through content hub ## API Limitations - Current Azure Sentinel APIs only expose user-deployed connectors - No direct method to list all available connectors, including built-in and gallery connectors - Limited metadata retrieval for existing connectors ## Workaround Strategies 1. **Ingestion Volume Analysis** - Use KQL queries to identify active data sources - Examine `Usage` and `CommonSecurityLog` tables - Track data ingestion patterns 2. **Manual Discovery** - Azure Portal > Sentinel > Data Connectors - Provides comprehensive view of all connectors - Includes built-in and gallery connectors not visible via API ## Technical Implications - Security automation scripts must account for incomplete connector listings - Manual verification recommended for comprehensive security configuration - Potential gaps in automated connector management ## Best Practices - Do not rely solely on API-retrieved connector lists - Cross-reference API results with portal configurations - Implement additional validation steps in security tooling - Maintain manual oversight of data connector configurations ## Future Outlook - Ongoing improvements expected in Azure Sentinel's API capabilities - Potential future enhancements to connector discovery mechanisms ## Warning for Developers ⚠️ **Important**: Any programmatic connector discovery should include explicit warnings about the limitations of the retrieved data. ## Recommended Disclaimer "Connector list may be incomplete. Built-in and gallery-deployed connectors are not included due to Azure API limitations. Manual verification recommended."