azure-app-service-security

azure-app-service-security is a skill for Claude Code, Codex from vinayaklatthe/microsoft-security-skills. It costs 145 tokens per session (1,808 once invoked), scanned A, original, MIT.

Security guidance for web apps and APIs hosted on Azure App Service, Microsoft's managed service for running web applications without managing servers directly.

In plain words
What is it for?
Use it to plan identities, private networking, HTTPS and TLS settings, Key Vault secret references, access restrictions, and web application firewalls.
Why use it?
It helps reduce exposed services, unsafe connections, hard-coded secrets, and weak access controls by matching security settings to how the app is used.

Skill for Claude CodeCodex

Written for no agent in particular: nothing here depends on one.

Good fit Use it to plan identities, private networking, HTTPS and TLS settings, Key Vault secret references, access restrictions, and web application firewalls.

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Install with agentmods
npx agentmods add skills/vinayaklatthe/microsoft-security-skills/azure-app-service-security
Install

Getting it into your agent

One page per mod, every tool's command on it. A separate URL per tool would split the same page into five that compete with each other.

Any agent
npx skills add vinayaklatthe/microsoft-security-skills --skill azure-app-service-security
Clone the repo
git clone --depth 1 https://github.com/vinayaklatthe/microsoft-security-skills

Made for: Claude Code, Codex.

Wrote this? Show the measurements

A badge with what this costs and how it scanned, read live from this page, so it follows the numbers instead of freezing them. Markdown for a README, HTML for a documentation site or a project page.

agentmods badge for azure-app-service-security

README.md
[![agentmods](https://agentmods.dev/badge/skills/vinayaklatthe/microsoft-security-skills/azure-app-service-security/github.svg)](https://agentmods.dev/skills/vinayaklatthe/microsoft-security-skills/azure-app-service-security)
Your own site
<a href="https://agentmods.dev/skills/vinayaklatthe/microsoft-security-skills/azure-app-service-security"><img src="https://agentmods.dev/badge/skills/vinayaklatthe/microsoft-security-skills/azure-app-service-security/github.svg" alt="Measured on agentmods" height="20"></a>

Or the 80×15 button, for a site that already has a row of RSS and ATOM ones. Only the verdict fits; the numbers stay here.

agentmods 80×15 button for azure-app-service-security

Your own site · 80×15
<a href="https://agentmods.dev/skills/vinayaklatthe/microsoft-security-skills/azure-app-service-security"><img src="https://agentmods.dev/badge/skills/vinayaklatthe/microsoft-security-skills/azure-app-service-security.svg" alt="Reviewed on agentmods" width="80" height="20"></a>
Per session 145 Skills are progressive disclosure: only the name and description are preloaded; the body loads when the skill is used.
When invoked 1,808 The whole file, excluding the scripts and references it only reads on demand.
Security scan A 0 findings. A grade says what 26 rules found in the file — not that it is safe.
Origin original No closer match found in the catalogue.
Token cost

What it costs to keep this loaded

Counted locally with the o200k_base tokenizer, which is exact for GPT models; Claude uses its own tokenizer and its counts differ. Treat this as one consistent yardstick across the catalogue rather than a bill. Prices are per million input tokens.

ModelPer sessionOnce invoked
Fable 5.1 $0.00145 $0.01808
Opus 5 $0.00072 $0.00904
Sonnet 5 $0.00029 $0.00362
Haiku 4.5 $0.00015 $0.00181

Measured 12d ago against content hash cd1869c63bb9, method: parsed. Prices are Anthropic first-party input rates as of 2026-09-11, from the pricing page.

Security

Grade A, and why

azure-app-service-security scanned grade A with 0 findings against 26 rules in 11 categories — prompt injection, anti-refusal, data exfiltration, privilege escalation, supply chain, agent snooping, system-prompt leakage, SSRF and excessive agency — measured 12d ago.

A static scan of the body, not an audit. Every finding is printed with the line that produced it so you can judge whether it matters here. A mod is markdown that instructs an agent; that is exactly why what it instructs is worth reading.

Nothing flagged

None of the 26 patterns this scan looks for appear in this file: no shell pipes, no recursive deletes, no credential paths, no hidden text, no instruction-override or anti-refusal phrasing, no agent-config snooping. That is not a guarantee, it is the absence of the things that are checkable.

skills/azure-app-service-security/SKILL.md · 125 lines

How it starts

The opening of the file, as written. The whole thing — 125 lines — stays where its author put it; the contents beside it link to each section on GitHub.

Azure App Service Security

Azure App Service hosts web apps and APIs as a managed PaaS. Securing it means eliminating secrets in config, removing public exposure where possible, enforcing modern transport, and fronting it with a WAF when it has to be public.

When to use

Hardening web apps and APIs hosted on Azure App Service. Use this skill to plan identity, network, secrets, and transport posture for a Web App / API App.

Do not use this skill for Azure Functions only (similar but separate platform), AKS workloads, or VM-hosted web apps.

Pick the configuration by exposure pattern

Exposure Inbound Outbound Front-end
Internal-only app (intranet, API for VNet workloads) Private endpoint, public access disabled VNet integration to spoke Internal Application Gateway
Public web app, sensitive data Public + access restrictions to WAF only VNet integration Front Door or App Gateway with WAF, Prevention mode
Public web app, basic Public, default None / VNet integration App Gateway with WAF
API consumed by partners Private endpoint + APIM in front VNet integration APIM (with WAF on APIM if public)
Background worker / no inbound Public access disabled VNet integration None

Rule of thumb: if it doesn't need to be on the internet, use a private endpoint and disable public network access. If it does need to be on the internet, put Front Door / App Gateway with WAF in Prevention mode in front and restrict the app to accept traffic only from the WAF's IP range or service tag.

Approach

  1. Enable managed identity — System-assigned managed identity by default. Grant it least-privilege roles on Azure SQL (SQL DB Contributor is wrong - use AAD auth + contained user), Storage (Storage Blob Data Reader), Key Vault (Key Vault Secrets User). Verify: app has managed identity; no SQL / Storage connection strings with embedded passwords in config.

Read the full file on GitHub · 125 lines

Changes

What this file has done since we first saw it

Hashed on every crawl. A supply-chain change to an agent config is a question of when, not whether, so the history is kept rather than the latest state alone.

  1. 12d ago First seen · 125 lines · 145 tokens per session scan A cd1869c63bb9

Subscribe to this mod's changes

azure-app-service-security is a skill published in the GitHub repository vinayaklatthe/microsoft-security-skills (173 stars, last pushed 2mo ago), licensed MIT. It adds 145 tokens to every session and 1,808 once invoked, about $0.0007 per session on Opus 5. A static security scan graded it A with 0 findings. No closer match exists in the catalogue, so it is treated as the original; first seen 2026-08-30.

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