azure-functions
Azure Functions Skill
This skill provides expert guidance for Azure Functions. 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), useread_filewith the specified lines. For categories with file links (e.g.,[security.md](security.md)), useread_fileon the linked reference file
IMPORTANT for Agent: If
metadata.generated_atis more than 3 months old, suggest the user pull the latest version from the repository. Ifmcp_microsoftdocstools are not available, suggest the user install it: Installation Guide
This skill requires network access to fetch documentation content:
- Preferred: Use
mcp_microsoftdocs:microsoft_docs_fetchwith query stringfrom=learn-agent-skill. Returns Markdown. - Fallback: Use
fetch_webpagewith query stringfrom=learn-agent-skill&accept=text/markdown. Returns Markdown.
Category Index
| Category | Lines | Description |
|---|---|---|
| Troubleshooting | L37-L59 | Diagnosing and fixing Durable Functions/Task SDK issues, AZFD/AZFW error codes, storage and config problems, and runtime/deployment errors for Node.js, Python, and VM start/stop functions. |
| Best Practices | L60-L79 | Patterns and guidance for robust, performant Azure Functions and Durable Functions: orchestration/entity design, versioning, error handling, DI, HTTP/connection usage, scaling, and language-specific best practices. |
| Decision Making | L80-L101 | Guidance on choosing Functions hosting/runtime models, estimating costs, and planning migrations (plans, runtimes, languages, AWS Lambda, Express.js, Service Bus) for optimal architecture. |
| Architecture & Design Patterns | L102-L107 | Running Functions in Linux containers, Durable Functions design with Azure Storage, and hosting Functions on Azure Container Apps for scalable, container-based architectures. |
| Limits & Quotas | L108-L116 | Details on Functions hosting limits: legacy and Flex Consumption plans, scaling behavior, concurrency and target-based scaling settings, and supported languages/versions. |
| Security | L117-L134 | Securing Functions apps: encryption at rest, secure storage, keys/secrets, managed identity, private endpoints/VNet, Web PubSub, networking/access controls, and secure MCP hosting. |
| Configuration | L135-L169 | Configuring Azure Functions apps: bindings, triggers, app/host settings, runtime versions, plans, networking, monitoring/telemetry, and local/Core Tools setup. |
| Integrations & Coding Patterns | L170-L273 | Patterns and how-tos for wiring Functions to external systems (DBs, messaging, AI/OpenAI, Dapr, MCP, storage, HTTP) using triggers/bindings, plus integration with API Mgmt, Logic Apps, and on-prem. |
| Deployment | L274-L303 | Deploying and hosting Azure Functions: provisioning plans (Consumption/Flex/Kubernetes), containers, CI/CD (GitHub/Azure Pipelines), slots, zero‑downtime, and migration/deployment automation. |
Troubleshooting
Best Practices
Decision Making
Architecture & Design Patterns
| Topic | URL |
|---|---|
| Run Azure Functions in Linux containers | https://learn.microsoft.com/en-us/azure/azure-functions/container-concepts |
| Host Azure Functions on Azure Container Apps | https://learn.microsoft.com/en-us/azure/azure-functions/functions-container-apps-hosting |
Limits & Quotas
| Topic | URL |
|---|---|
| Understand event-driven scaling limits in Azure Functions | https://learn.microsoft.com/en-us/azure/azure-functions/event-driven-scaling |
| Understand Azure Functions Flex Consumption hosting | https://learn.microsoft.com/en-us/azure/azure-functions/flex-consumption-plan |
| Configure concurrency behavior in Azure Functions | https://learn.microsoft.com/en-us/azure/azure-functions/functions-concurrency |
| Use target-based scaling for Azure Functions triggers | https://learn.microsoft.com/en-us/azure/azure-functions/functions-target-based-scaling |
| Review supported languages and versions for Azure Functions | https://learn.microsoft.com/en-us/azure/azure-functions/supported-languages |
Security
Configuration
Integrations & Coding Patterns
Deployment
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