iac-network

iac-network is a skill for Claude Code, Codex from senaykt/iac-security-scan-skills. It costs 125 tokens per session (11,751 once invoked), scanned A, original, MIT.

A security review of cloud network settings defined as Infrastructure-as-Code. It examines how subnets, routes, firewalls, load balancers, and cloud services expose or connect workloads.

In plain words
What is it for?
Use it to find public services, open management ports, unsafe ingress or egress, weak segmentation, exposed databases, risky routes, and paths from development networks into production.
Why use it?
A network described as private is not automatically safe, and permissive routes or firewall rules can expose systems or enable movement between environments. The review looks at reachable paths rather than isolated rules.

Skill for Claude CodeCodex

Written for no agent in particular: nothing here depends on one. Also seen: installed under .agents/ (shared by several agents).

Good fit Use it to find public services, open management ports, unsafe ingress or egress, weak segmentation, exposed databases, risky routes, and paths from development networks into production.

Compare 6 skills from other repositories ↓
Install with agentmods
npx agentmods add skills/senaykt/iac-security-scan-skills/iac-network
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 senaykt/iac-security-scan-skills --skill iac-network
Clone the repo
git clone --depth 1 https://github.com/senaykt/iac-security-scan-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 iac-network

README.md
[![agentmods](https://agentmods.dev/badge/skills/senaykt/iac-security-scan-skills/iac-network/github.svg)](https://agentmods.dev/skills/senaykt/iac-security-scan-skills/iac-network)
Your own site
<a href="https://agentmods.dev/skills/senaykt/iac-security-scan-skills/iac-network"><img src="https://agentmods.dev/badge/skills/senaykt/iac-security-scan-skills/iac-network/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 iac-network

Your own site · 80×15
<a href="https://agentmods.dev/skills/senaykt/iac-security-scan-skills/iac-network"><img src="https://agentmods.dev/badge/skills/senaykt/iac-security-scan-skills/iac-network.svg" alt="Reviewed on agentmods" width="80" height="20"></a>
Per session 125 Skills are progressive disclosure: only the name and description are preloaded; the body loads when the skill is used.
When invoked 11,751 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 $0.00125 $0.11751
Opus 5 $0.00063 $0.05875
Sonnet 5 $0.00025 $0.02350
Haiku 4.5 $0.00013 $0.01175

Measured 12d ago against content hash 07f466c7f838, method: parsed. Prices are Anthropic first-party input rates as of 2026-09-12, from the pricing page.

Security

Grade A, and why

iac-network 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.

.agents/skills/iac-network/SKILL.md · 644 lines

How it starts

The opening of the file, as written. The whole thing — 644 lines — stays where its author put it; the contents beside it link to each section on GitHub.

iac-network

ROLE

You are a senior cloud network security reviewer who combines three perspectives in every analysis:

  1. Cloud network architect — You understand VPC primitives across clouds: subnets, route tables, internet gateways, NAT gateways, egress-only IGWs, transit gateways, VPC peering, VPC endpoints (gateway + interface), PrivateLink, security groups, NACLs, ALB/NLB/GLB listeners, target groups, WAF associations, CloudFront origin policies, API Gateway endpoint types, Lambda VPC attachment, ECS networking modes (awsvpc / bridge / host), EKS CNI behavior, RDS subnet groups, ElastiCache, Redshift, MSK, Lambda Function URLs, App Runner, App Mesh, Service Connect. You know that "private subnet" means "no route to IGW," not "secure," and you know the difference between an SG's stateful behavior and a NACL's stateless behavior.

  2. Network red team operator — You think in paths, not rules. You ask: "From the internet, which workloads can I actually reach? Once on a workload, where else can I move? What outbound paths exist for C2 / exfiltration? Which databases are reachable from internet-facing tiers? Which dev environments have routes into prod?" You know that a security group allowing 0.0.0.0/0:443 on a database is not the same as that database being internet-reachable — but you also know that "private" + "publicly-routable target group via ALB" is the same as internet-reachable.

  3. DevSecOps reviewer — You understand that legitimate workloads must accept traffic and make outbound calls. You distinguish "exposed because it must be" from "exposed because someone forgot to remove a debugging rule." You write findings developers fix, not findings they suppress.

You are explicitly NOT a regex-based linter. "Flag any SG with 0.0.0.0/0" is below your bar. You reason about whether traffic can actually flow end-to-end, what is reachable from where, and what the blast radius is when something on that path is compromised.

OBJECTIVE

Read the full file on GitHub · 644 lines

Files

What ships with it

4 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. 12d ago First seen · 644 lines · 125 tokens per session scan A 07f466c7f838

Subscribe to this mod's changes

iac-network is a skill published in the GitHub repository senaykt/iac-security-scan-skills (48 stars, last pushed 3mo ago), licensed MIT. It adds 125 tokens to every session and 11,751 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 2026-08-30.

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