architecting-security

architecting-security is a skill for Claude Code, Codex from ancoleman/ai-design-components. It costs 62 tokens per session (5,517 once invoked), scanned A, original, MIT.

Guidance for designing security across an entire system using several layers of protection. It covers zero trust, threat modeling, and security frameworks such as NIST CSF, CIS Controls, and ISO 27001.

In plain words
What is it for?
Use it to design security for new systems or cloud migrations, audit existing architectures, model threats to applications and APIs, establish governance, and map protections to recognized frameworks.
Why use it?
It helps identify threats and plan security controls before or during system changes, rather than focusing only on individual tools such as firewalls or vulnerability scanners.

Skill for Claude CodeCodex

Part of the security-skills plugin — 7 skills shipped together

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.

agentmods
npx agentmods add skills/ancoleman/ai-design-components/architecting-security
Any agent
npx skills add ancoleman/ai-design-components --skill architecting-security
Clone the repo
git clone --depth 1 https://github.com/ancoleman/ai-design-components

Made for: Claude Code, Codex.

Or install security-skills, the plugin that ships this one along with the rest of its 7 skills.

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 architecting-security

README.md
[![agentmods](https://agentmods.dev/badge/skills/ancoleman/ai-design-components/architecting-security.svg)](https://agentmods.dev/skills/ancoleman/ai-design-components/architecting-security)
Your own site
<a href="https://agentmods.dev/skills/ancoleman/ai-design-components/architecting-security"><img src="https://agentmods.dev/badge/skills/ancoleman/ai-design-components/architecting-security.svg" alt="Measured on agentmods" height="20"></a>
Per session 62 Skills are progressive disclosure: only the name and description are preloaded; the body loads when the skill is used.
When invoked 5,517 The whole file, excluding the scripts and references it only reads on demand.
Security scan A 0 findings. Scan, not verified.
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 $0.00062 $0.05517
Opus 5 $0.00031 $0.02759
Sonnet 5 $0.00012 $0.01103
Haiku 4.5 $0.00006 $0.00552

Measured 6d ago against content hash 314b9f2f3833, method: parsed. Prices are Anthropic first-party input rates as of 2026-09-05, from the pricing page.

Security

Grade A, and why

architecting-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 6d ago.

The scan reads SKILL.md. This mod also ships 1 executable file (scripts/security-checklist.sh), listed below but not scanned — reading those needs a real analyzer, not pattern matching.

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/architecting-security/SKILL.md · 501 lines

How it starts

The opening of the file, as written. The whole thing — 501 lines — stays where its author put it; the contents beside it link to each section on GitHub.

Security Architecture

Design and implement comprehensive security architectures that protect systems, data, and users through layered defense strategies, zero trust principles, and risk-based security controls.

Purpose

Security architecture provides the strategic foundation for building resilient, compliant, and trustworthy systems. This skill guides the design of defense-in-depth layers, zero trust implementations, threat modeling methodologies, and mapping to control frameworks (NIST CSF, CIS Controls, ISO 27001).

Unlike tactical security skills (configuring firewalls, implementing authentication, scanning vulnerabilities), security architecture focuses on strategic planning, comprehensive defense strategies, and governance frameworks.

When to Use This Skill

Use security architecture when:

  • Designing security for greenfield systems (new applications, cloud migrations)
  • Conducting security audits or risk assessments of existing systems
  • Implementing zero trust architecture across enterprise environments
  • Establishing security governance programs and compliance frameworks
  • Threat modeling applications, APIs, or microservices architectures
  • Selecting and mapping security controls to regulatory requirements (SOC 2, HIPAA, PCI DSS)
  • Designing cloud security architectures (AWS, GCP, Azure multi-account strategies)
  • Addressing supply chain security (SLSA framework, SBOM implementation)

Core Security Architecture Principles

1. Defense in Depth

Implement multiple independent layers of security controls so that if one layer fails, others continue to protect critical assets.

9 Defense Layers (2025 Model):

  1. Physical Security: Data center access, environmental controls, hardware security modules (HSMs)
  2. Network Perimeter: Next-gen firewalls (NGFW), DDoS protection, web application firewalls (WAF)
  3. Network Segmentation: VLANs, VPCs, security groups, micro-segmentation
  4. Endpoint Protection: EDR, antivirus, device encryption, patch management
  5. Application Layer: Secure coding, WAF, API security, SAST/DAST scanning
  6. Data Layer: Encryption (at-rest, in-transit, in-use), DLP, backup/recovery
  7. Identity & Access Management: MFA, SSO, RBAC/ABAC, privileged access management (PAM)
  8. Behavioral Analytics: UEBA, ML-based anomaly detection, threat intelligence
  9. Security Operations: SIEM, SOAR, incident response, continuous monitoring

Read the full file on GitHub · 501 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. 6d ago First seen · 501 lines · 62 tokens per session scan A 314b9f2f3833

Subscribe to this mod's changes

architecting-security is a skill published in the GitHub repository ancoleman/ai-design-components (518 stars, last pushed 8mo ago), licensed MIT. It adds 62 tokens to every session and 5,517 once invoked, about $0.0003 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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