/azure-event-grid

name: azure-event-grid
description: Expert knowledge for Azure Event Grid development including troubleshooting, best practices, decision making, architecture & design patterns, limits & quotas, security, configuration, and integrations & coding patterns. Use when configuring Event Grid/MQTT namespaces, securing endpoints, routing events, integrating Functions/Service Bus, or troubleshooting delivery, and other Azure Event Grid related development tasks. Not for Azure Event Hubs (use azure-event-hubs), Azure Service Bus (use azure-service-bus), Azure Notification Hubs (use azure-notification-hubs), Azure Web PubSub (use azure-web-pubsub).
compatibility: Requires network access. Uses mcp_microsoftdocs:microsoft_docs_fetch or fetch_webpage to retrieve documentation.
metadata:
  generated_at: "2026-08-31"
  generator: "docs2skills/1.0.0"

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, and integrations & coding patterns. 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 | L36-L44 | Diagnosing and fixing Event Grid issues: MQTT broker problems, error codes, common failures, network connectivity, and webhook subscription validation errors. | | Best Practices | L45-L49 | Guidance on designing client-side failover for Event Grid, including using multiple regions, retry logic, and resilient publishing patterns for high availability. | | Decision Making | L50-L60 | Guidance for choosing Event Grid tiers, schemas, Kubernetes vs Azure hosting, MQTT routing, autoscale, push delivery, and migration from Event Grid on IoT Edge to IoT Edge hub. | | Architecture & Design Patterns | L61-L67 | Patterns for routing events between namespaces, designing MQTT topic hierarchies, and implementing MQTT command/response flows using Azure Event Grid. | | Limits & Quotas | L68-L79 | Event Grid delivery/retry behavior, custom headers, event retention, and region-specific quotas/limits for topics, namespaces, and Kubernetes-based Event Grid | | Security | L80-L132 | Securing Event Grid endpoints and MQTT: auth (keys, SAS, Entra, JWT, certs), RBAC, managed identities, webhooks, TLS, IP/firewalls, private endpoints, policies, and cross-tenant delivery. | | Configuration | L133-L204 | Configuring Event Grid and MQTT namespaces, domains, filtering, monitoring, autoscale, and dead-lettering, plus detailed event schemas and subscription setup for many Azure and Microsoft services. | | Integrations & Coding Patterns | L205-L245 | Patterns and guides for integrating Event Grid with Auth0, Graph/M365 apps, MQTT, webhooks, Functions, Service Bus, Event Hubs, and understanding event schemas and handler configuration. |

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 | | Troubleshoot Event Grid webhook subscription validation | 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 | |-------|-----| | Select the right 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 features | https://learn.microsoft.com/en-us/azure/event-grid/kubernetes/features | | Choose MQTT routing options in Event Grid | https://learn.microsoft.com/en-us/azure/event-grid/mqtt-routing | | Use Autoscale for Azure Event Grid namespaces | https://learn.microsoft.com/en-us/azure/event-grid/namespace-autoscale-overview | | Decide on push delivery for Event Grid namespaces | https://learn.microsoft.com/en-us/azure/event-grid/namespace-push-delivery-overview | | 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 reque