azure-event-grid

# Azure Event Grid Skill

This skill provides expert guidance for Azure Event Grid. Covers troubleshooting, best practices, decision making, architecture & design patterns, limits & quotas, security, configuration, integrations & coding patterns, and deployment. It combines local quick-reference content with remote documentation fetching capabilities.

## How to Use This Skill

> **IMPORTANT for Agent**: Use the **Category Index** below to locate relevant sections. For categories with line ranges (e.g., `L35-L120`), use `read_file` with the specified lines. For categories with file links (e.g., `[security.md](security.md)`), use `read_file` on the linked reference file

> **IMPORTANT for Agent**: If `metadata.generated_at` is more than 3 months old, suggest the user pull the latest version from the repository. If `mcp_microsoftdocs` tools are not available, suggest the user install it: [Installation Guide](https://github.com/MicrosoftDocs/mcp/blob/main/README.md)

This skill requires **network access** to fetch documentation content:
- **Preferred**: Use `mcp_microsoftdocs:microsoft_docs_fetch` with query string `from=learn-agent-skill`. Returns Markdown.
- **Fallback**: Use `fetch_webpage` with query string `from=learn-agent-skill&accept=text/markdown`. Returns Markdown.

## Category Index

| Category | Lines | Description |
|----------|-------|-------------|
| Troubleshooting | L37-L45 | Diagnosing and fixing Event Grid issues: MQTT broker problems, error codes, common failures, network connectivity, and event subscription validation errors. |
| Best Practices | L46-L50 | Guidance on designing client-side failover for Event Grid, including using multiple regions, retry logic, and resilient publishing patterns for high availability. |
| Decision Making | L51-L58 | Guidance on choosing Event Grid tiers, matching event schemas, comparing Azure vs Kubernetes Event Grid, and migrating from Event Grid on IoT Edge to IoT Edge hub. |
| Architecture & Design Patterns | L59-L64 | Patterns for routing events across Event Grid namespace topics and implementing MQTT-based request/response command workflows using Event Grid. |
| Limits & Quotas | L65-L75 | Event Grid delivery/retry behavior, custom headers, event retention, and region-specific quotas/limits that affect throughput, reliability, and configuration of topics and namespaces. |
| Security | L76-L127 | Securing Event Grid and MQTT: auth (keys, SAS, Entra ID, JWT, certs), RBAC, managed identities, webhooks, network/IP rules, private endpoints, TLS, and Azure Policy enforcement. |
| Configuration | L128-L205 | Configuring Event Grid and MQTT: topics, subscriptions, filters, routing, dead-lettering, monitoring/metrics, and detailed event schemas for many Azure and Microsoft services. |
| Integrations & Coding Patterns | L206-L247 | Patterns for publishing, routing, and consuming Event Grid events with HTTP/webhooks, MQTT, Azure/M365/SaaS sources, and handlers like Event Hubs, Monitor, Relay, and custom endpoints. |
| Deployment | L248-L251 | Guides for deploying Event Grid on Azure Arc-enabled Kubernetes, including installing and configuring the Event Grid extension on Arc clusters. |

### Troubleshooting
| Topic | URL |
|-------|-----|
| Troubleshoot Azure Event Grid MQTT broker issues | https://learn.microsoft.com/en-us/azure/event-grid/mqtt-troubleshoot-errors |
| Azure Event Grid error codes and resolutions | https://learn.microsoft.com/en-us/azure/event-grid/troubleshoot-errors |
| Troubleshoot common Azure Event Grid issues | https://learn.microsoft.com/en-us/azure/event-grid/troubleshoot-issues |
| Diagnose Azure Event Grid network connectivity failures | https://learn.microsoft.com/en-us/azure/event-grid/troubleshoot-network-connectivity |
| Fix Azure Event Grid subscription validation errors | https://learn.microsoft.com/en-us/azure/event-grid/troubleshoot-subscription-validation |

### Best Practices
| Topic | URL |
|-------|-----|
| Implement client-side failover for Azure Event Grid | https://learn.microsoft.com/en-us/azure/event-grid/custom-disaster-recovery-client-side |

### Decision Making
| Topic | URL |
|-------|-----|
| Choose the correct Azure Event Grid tier | https://learn.microsoft.com/en-us/azure/event-grid/choose-right-tier |
| Choose compatible event schemas for Azure Event Grid subscriptions | https://learn.microsoft.com/en-us/azure/event-grid/event-schema-compatibility |
| Compare Event Grid on Kubernetes vs Azure Event Grid features | https://learn.microsoft.com/en-us/azure/event-grid/kubernetes/features |
| Migrate from Event Grid on IoT Edge to IoT Edge hub | https://learn.microsoft.com/en-us/azure/event-grid/transition |

### Architecture & Design Patterns
| Topic | URL |
|-------|-----|
| Forward events between Event Grid namespace topics | https://learn.microsoft.com/en-us/azure/event-grid/forward-events-to-another-namespace-topic |
| Implement MQTT request-response commands with Event Grid | https://learn.microsoft.com/en-us/azure/event-grid/mqtt-request-response-messages |

### Limits & Quotas
| Topic | URL |
|-------|-----|
| Understand Azure Event Grid delivery and retry behavior | https://learn.microsoft.com/en-us/azure/event-grid/delivery-and-retry |
| Configure custom delivery headers for Azure Event Grid events | https://learn.microsoft.com/en-us/azure/event-grid/delivery-properties |
| Understand event retention for Event Grid namespace topics | https://learn.microsoft.com/en-us/azure/event-grid/event-retention |
| Azure Event Grid FAQs on limits and behavior | https://learn.microsoft.com/en-us/azure/event-grid/faq |
| Set custom delivery headers for Event Grid namespaces | https://learn.microsoft.com/en-us/azure/event-grid/namespace-delivery-properties |
| Delivery and retry behavior for Event Grid namespace push | https://learn.microsoft.com/en-us/azure/event-grid/namespace-delivery-retry |
| Review Azure Event Grid quotas and limits by region | https://learn.microsoft.com/en-us/azure/event-grid/qu