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.
npx skills add julianobarbosa/claude-code-skills --skill devops-network-calculator-for-azuregit clone --depth 1 https://github.com/julianobarbosa/claude-code-skillsWrote 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.
[](https://agentmods.dev/skills/julianobarbosa/claude-code-skills/devops-network-calculator-for-azure)<a href="https://agentmods.dev/skills/julianobarbosa/claude-code-skills/devops-network-calculator-for-azure"><img src="https://agentmods.dev/badge/skills/julianobarbosa/claude-code-skills/devops-network-calculator-for-azure/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.
<a href="https://agentmods.dev/skills/julianobarbosa/claude-code-skills/devops-network-calculator-for-azure"><img src="https://agentmods.dev/badge/skills/julianobarbosa/claude-code-skills/devops-network-calculator-for-azure.svg" alt="Reviewed on agentmods" width="80" height="20"></a>- NVIDIA SkillSpector pass
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.
| Model | Per session | Once invoked |
|---|---|---|
| Fable 5.1 | $0.00112 | $0.01275 |
| Opus 5 | $0.00056 | $0.00638 |
| Sonnet 5 | $0.00022 | $0.00255 |
| Haiku 4.5 | $0.00011 | $0.00128 |
Grade A, and why
devops-network-calculator-for-azure 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 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.
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.
How it starts
The opening of the file, as written. The whole thing — 89 lines — stays where its author put it; the contents beside it link to each section on GitHub.
Azure Network Calculator
Offline Azure network planning tool. Calculates CIDRs, detects overlaps, analyzes VNet utilization, plans AKS networking, and generates Terraform-ready output. Zero external dependencies — uses Python stdlib only.
Quick Start
# What CIDR do I need for 500 hosts?
python3 scripts/network-calc.py calculate --from-hosts 500
# Analyze current VNet
python3 scripts/network-calc.py analyze --from-tfvars terraform/terraform.tfvars
# Validate for overlaps (pre-commit compatible)
python3 scripts/network-calc.py validate --from-tfvars terraform/terraform.tfvars
# Find where to place a new subnet
python3 scripts/network-calc.py first-fit --vnet 10.248.0.0/20 \
--subnets "10.248.0.0/22,10.248.4.0/22,10.248.8.0/26,10.248.9.0/24" --hosts 500
Commands
| Command | Purpose | Reference |
|---|---|---|
calculate |
CIDR info, host sizing, subnet splitting | CIDR Guide |
analyze |
VNet utilization, gap analysis | CIDR Guide |
validate |
Overlap detection, Azure constraint checks | Azure Constraints |
first-fit |
Find optimal placement for new subnet | CIDR Guide |
plan-multi |
Multi-environment VNet allocation | Segmentation |
Project Context
This project's current VNet: 10.248.0.0/20 (4,096 IPs, 57.8% utilized)
| Subnet | CIDR | Usable |
|---|---|---|
| GatewaySubnet | 10.248.0.0/22 | 1,019 |
| PublicSubnet | 10.248.4.0/22 | 1,019 |
| AzureBastionSubnet | 10.248.8.0/26 | 59 |
| PrivateSubnet | 10.248.9.0/24 | 251 |
| Available gaps | 1,708 |
Key files: terraform/terraform.tfvars, terraform/networking.tf, terraform/nsg.tf
Azure Quick Reference
- 5 reserved IPs per subnet (.0, .1, .2, .3, broadcast)
- Bastion: min /26 | Gateway: min /27 | Firewall: min /26
- Max subnets/VNet: 3,000 | Max NSG rules: 1,000
- Full reference: Azure Constraints
What ships with it
9 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.
- references/aks-networking-guide.md 12 KB
- references/azure-constraints.md 3.2 KB
- references/cidr-calculation-guide.md 6.1 KB
- references/segmentation-patterns.md 12 KB
- scripts/network-calc.py 19 KB runs code
- templates/multi-env-plan.md.tpl 1.1 KB
- templates/nsg-rules-aks.tfvars.tpl 2.1 KB
- templates/vnet-layout.tfvars.tpl 1.9 KB
- workflow.md 2.7 KB
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.
- 11d ago First seen · 89 lines · 112 tokens per session scan A 560827c73a46
devops-network-calculator-for-azure is a skill published in the GitHub repository julianobarbosa/claude-code-skills (10 stars, last pushed 15d ago), licensed MIT. It adds 112 tokens to every session and 1,275 once invoked, about $0.0006 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 2026-08-31.
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