python-appservice-deploy

Pushes a Python web app up to Azure so it is live on the internet, building whatever hosting pieces it needs along the way if they are not already there.

WHEN TO USE

SCOPE

USE FOR

Deploy a Flask, Django, or FastAPI app to Azure App Service for the first time.
Redeploy updated Python code to an existing App Service without touching infrastructure.
Get the resource group, plan, and web app created automatically when none exist.
Fix a stuck deployment, such as a missing plan or a container that won't start.

NOT FOR

Deploy to Azure Container Apps or Azure Functions.
Deploy a non-Python application.
Set up full infrastructure with Terraform or Bicep — use azure-prepare instead.

This is a saved copy of the skill's SKILL.md instructions. It may differ from the upstream file or the version you install.

In this document (3)

Python on Azure App Service — Code Deploy

Deploys Python (Flask, Django, FastAPI, generic) code to Azure App Service Linux (P0v3, Python 3.14). Creates RG + Plan + Web App if missing. Hand off to azure-prepare for VNet, Key Vault, databases, or IaC.

MCP tools used: mcp_azure_mcp_subscription_list, mcp_azure_mcp_group_list, mcp_azure_mcp_appservice, mcp_azure_mcp_azd (when azure.yaml is present).

Workflow

Resolve context — smart defaults, minimal prompts. Only the app name is interactive; RG (<app>-rg), Plan (<app>-plan), region (current az default or eastus2), subscription are derived. create-app.md §1.
Detect framework (advisory, never blocks). detect.md.
Choose path — azure.yaml host: appservice → deploy-azd.md; else deploy-azcli.md.
Ensure RG → Plan (P0v3 --is-linux) → Web App (--runtime "PYTHON:3.14") exist. On transient ARM errors, follow transient-retry.md. create-app.md.
Set startup — Flask/Django: none (Oryx auto-detects). FastAPI: always python -m uvicorn main:app --host 0.0.0.0. Other: warn. startup-commands.md.
Set SCM_DO_BUILD_DURING_DEPLOYMENT=true.
Deploy — azd deploy or az webapp deploy --type zip --track-status false.
STOP. Print the post-deploy message (post-deploy-message.md) and end the turn.

Hard rules

⛔ NO POST-DEPLOY VERIFICATION — after deploy returns, do not run az webapp log tail, curl, Invoke-WebRequest, or any health probe. App Service needs 2–3 min to warm; a quiet log or early 5xx is not failure.
⛔ SHELL SAFETY — for --runtime always use "PYTHON:3.14" (colon). Never "PYTHON|3.14" (pipe is a shell operator).
⛔ NEVER az webapp up — deprecated. Use Step 7 commands.
✅ URL FORMAT — present endpoints as https://... URLs.

Error Handling

See errors.md for the full symptom → cause → fix matrix. Quick triage: missing plan/app → re-run Step 4; container ping timeout on 8000 → fix startup (Step 5); ModuleNotFoundError after deploy → ensure Step 6 ran, redeploy.

This skill ships inside the Azure Skills Plugin. Listed package contents include hooks and an MCP server. Installed components and skill versions may vary by AI tool.

Run this outside your AI tool, using Node.js 22.20.0 or newer. Skills CLI 1.7.2 skips skill selection; prompts cancel installation without an interactive terminal. If choosing Project when asked about installation scope, open your project's folder before running this.

Install checklist

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npx skills add microsoft/azure-skills --skill "python-appservice-deploy" --full-depth

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What's inside

Files included with this skill.

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Python on Azure App Service — Code Deploy

Workflow

Hard rules

Error Handling

Account or credentials required

What's inside

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