azure-network-calculator

azure-network-calculator is a skill for Claude Code, Codex from julianobarbosa/claude-code-skills. It costs 77 tokens per session (1,134 once invoked), scanned A, original, MIT.

An Azure network-planning helper for calculating CIDR ranges, which describe blocks of IP addresses, and dividing them into subnets inside Azure virtual networks (VNets).

In plain words
What is it for?
Use it to plan VNet and subnet layouts, allocate IP addresses, validate CIDR ranges, and design hub-and-spoke network structures.
Why use it?
It helps prevent overlapping or undersized address ranges when planning network capacity and connecting Azure networks.

Skill for Claude CodeCodex

Written for no agent in particular: nothing here depends on one. Also seen: reads .claude/ paths.

Good fit Use it to plan VNet and subnet layouts, allocate IP addresses, validate CIDR ranges, and design hub-and-spoke network structures.

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Install with agentmods
npx agentmods add skills/julianobarbosa/claude-code-skills/azure-network-calculator
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 julianobarbosa/claude-code-skills --skill azure-network-calculator
Clone the repo
git clone --depth 1 https://github.com/julianobarbosa/claude-code-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-network-calculator

README.md
[![agentmods](https://agentmods.dev/badge/skills/julianobarbosa/claude-code-skills/azure-network-calculator/github.svg)](https://agentmods.dev/skills/julianobarbosa/claude-code-skills/azure-network-calculator)
Your own site
<a href="https://agentmods.dev/skills/julianobarbosa/claude-code-skills/azure-network-calculator"><img src="https://agentmods.dev/badge/skills/julianobarbosa/claude-code-skills/azure-network-calculator/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-network-calculator

Your own site · 80×15
<a href="https://agentmods.dev/skills/julianobarbosa/claude-code-skills/azure-network-calculator"><img src="https://agentmods.dev/badge/skills/julianobarbosa/claude-code-skills/azure-network-calculator.svg" alt="Reviewed on agentmods" width="80" height="20"></a>
Per session 77 Skills are progressive disclosure: only the name and description are preloaded; the body loads when the skill is used.
When invoked 1,134 The whole file, excluding the scripts and references it only reads on demand.
Security scan A 1 finding. A grade says what 26 rules found in the file — not that it is safe. Third-party audits
  • NVIDIA SkillSpector warn 7 Sept 2026
SkillSpector: 1 finding, up to medium

These are SkillSpector’s own severities. On a checked sample its high-severity flags on skills were ~96% false positives — a documented command, a public API, a “never do X” rule — so we show them as a caution to read, not a verdict. Why →

  • medium Data Exfiltration · line 20
    Data is being sent to an external URL. This could be legitimate telemetry or data exfiltration. Manual review is recommended.
    Fix: Verify the destination URL is trusted and necessary. Remove or replace with documented APIs. Ensure no secrets, tokens, or PII are transmitted.
How audits are shown
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 $0.00077 $0.01134
Opus 5 $0.00039 $0.00567
Sonnet 5 $0.00015 $0.00227
Haiku 4.5 $0.00008 $0.00113

Measured 11d ago against content hash 15e5f0c06346, method: parsed. Prices are Anthropic first-party input rates as of 2026-09-11, from the pricing page.

Security

Grade A, and why

azure-network-calculator scanned grade A with 1 finding 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 11d 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.

Makes network callslowCapability

Not a fault in itself. Listed so you know the mod talks to something, and to what.

curl -s -X POST http://localhost:8888/notify \
skills/azure-network-calculator/SKILL.md · 107 lines

How it starts

The opening of the file, as written. The whole thing — 107 lines — stays where its author put it; the contents beside it link to each section on GitHub.

Customization

Before executing, check for user customizations at: ~/.claude/skills/PAI/USER/SKILLCUSTOMIZATIONS/azure-network-calculator-skill/

If this directory exists, load and apply any PREFERENCES.md, configurations, or resources found there. These override default behavior. If the directory does not exist, proceed with skill defaults.

MANDATORY: Voice Notification (REQUIRED BEFORE ANY ACTION)

You MUST send this notification BEFORE doing anything else when this skill is invoked.

  1. Send voice notification:

    curl -s -X POST http://localhost:8888/notify \
      -H "Content-Type: application/json" \
      -d '{"message": "Running the WORKFLOWNAME workflow in the azure-network-calculator-skill skill to ACTION"}' \
      > /dev/null 2>&1 &
    
  2. Output text notification:

    Running the **WorkflowName** workflow in the **azure-network-calculator-skill** skill to ACTION...
    

This is not optional. Execute this curl command immediately upon skill invocation.

azure-network-calculator-skill

Automates CIDR calculation, subnet allocation, and Terraform code generation for your organization's Azure hub-spoke infrastructure.

Workflow Routing

Intent Workflow Description
Plan a VNet + subnets for a new resource group PlanNetwork Design complete network layout with Terraform
Check if a CIDR overlaps existing allocations ValidateCidr Overlap detection against master allocation
Show remaining capacity in a subscription/VNet CalculateCapacity Available /20 and /24 blocks

If the user's intent is ambiguous, ask which workflow to run.

Read the full file on GitHub · 107 lines

Files

What ships with it

5 files beside SKILL.md in the same directory: the scripts, references and assets a skill reads on demand. Not counted in the per-session cost; read them before you install if any of them is executable.

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. 11d ago First seen · 107 lines · 77 tokens per session scan A 15e5f0c06346

Subscribe to this mod's changes

azure-network-calculator is a skill published in the GitHub repository julianobarbosa/claude-code-skills (10 stars, last pushed 15d ago), licensed MIT. It adds 77 tokens to every session and 1,134 once invoked, about $0.0004 per session on Opus 5. A static security scan graded it A with 1 finding (makes network calls). No closer match exists in the catalogue, so it is treated as the original; first seen 2026-08-31.

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