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 vaquarkhan/compliance-agent-skills --skill pci-dss-network-segmentationgit clone --depth 1 https://github.com/vaquarkhan/compliance-agent-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/vaquarkhan/compliance-agent-skills/pci-dss-network-segmentation)<a href="https://agentmods.dev/skills/vaquarkhan/compliance-agent-skills/pci-dss-network-segmentation"><img src="https://agentmods.dev/badge/skills/vaquarkhan/compliance-agent-skills/pci-dss-network-segmentation/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/vaquarkhan/compliance-agent-skills/pci-dss-network-segmentation"><img src="https://agentmods.dev/badge/skills/vaquarkhan/compliance-agent-skills/pci-dss-network-segmentation.svg" alt="Reviewed on agentmods" width="80" height="20"></a>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 | $0.00115 | $0.01936 |
| Opus 5 | $0.00057 | $0.00968 |
| Sonnet 5 | $0.00023 | $0.00387 |
| Haiku 4.5 | $0.00012 | $0.00194 |
Grade A, and why
pci-dss-network-segmentation 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 — 154 lines — stays where its author put it; the contents beside it link to each section on GitHub.
PCI-DSS Network Segmentation
Overview
This skill implements PCI-DSS v4.0 Requirements 1 and 2 for network segmentation and CDE scope reduction. Proper segmentation limits PCI assessment scope to systems that store, process, or transmit CHD/SAD (cardholder data/sensitive authentication data) and systems connected to them.
Key requirements:
- Req 1.2.x: Network security control (NSC) configuration standards, inbound/outbound rules, CDE segmentation
- Req 1.3.x: Prohibit direct public access to CDE; restrict connections between untrusted networks and CDE
- Req 1.4.x: Personal firewall on mobile/remote devices accessing CDE
- Req 2.x: Secure configurations—change defaults, harden NSCs and system components
AI agents and MCP servers must not bridge untrusted networks into the CDE without explicit NSC rules and business justification.
When to Use
Use this skill when:
- Scoping PCI assessment—identifying in-scope vs out-of-scope systems
- Reviewing firewall rules, security groups, ACLs, WAF between CDE and other zones
- Validating segmentation test (penetration test or connectivity probe) results
- Assessing whether agent/MCP infrastructure introduces CDE connectivity
- Scope reduction initiatives (moving payment to hosted iframe, P2PE)
- Hardening NSC default configurations (Req 2.1)
Do not use this skill when:
- Auditing checkout JavaScript (use
pci-dss-script-audit) - General SOC 2 logical access without CDE (use
access-control-identity-audit) - Encrypting data at rest (Req 3.x—note gap but use appropriate skill)
Core Process
Execute steps in order.
Step 1: CDE and connected-to identification
- Inventory systems that store, process, or transmit CHD/SAD.
- Identify systems connected to CDE (even if they don't touch CHD)—they enter scope unless adequately segmented.
- Document data flows: payment forms, tokenization, API gateways, MCP Postgres access.
- Artifact:
pci-scope-diagram-{id}.jsonwith trust zones (CDE, DMZ, Corporate, Cloud).
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 · 154 lines · 115 tokens per session scan A aa34d4194a6f
pci-dss-network-segmentation is a skill published in the GitHub repository vaquarkhan/compliance-agent-skills (2 stars, last pushed 17d ago), licensed MIT. It adds 115 tokens to every session and 1,936 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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