security-architect

security-architect is a skill for Claude Code, Codex from VoidNxSEC/securellm-mcp. It costs 78 tokens per session (1,725 once invoked), scanned A, original, Apache-2.0.

A security-architecture guide for designing and reviewing secure systems. It covers threat modeling, Zero Trust, layered defenses, secure cloud designs, and frameworks such as NIST, ISO 27001, and SOC 2.

In plain words
What is it for?
Use it to design secure systems, assess security posture, model threats, plan cloud security, or work toward compliance requirements.
Why use it?
It helps identify security risks and choose controls while considering operational needs and user experience.

Skill for Claude CodeCodex

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/voidnxsec/securellm-mcp/security-architect
Any agent
npx skills add VoidNxSEC/securellm-mcp --skill security-architect
Clone the repo
git clone --depth 1 https://github.com/VoidNxSEC/securellm-mcp

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 security-architect

README.md
[![agentmods](https://agentmods.dev/badge/skills/voidnxsec/securellm-mcp/security-architect.svg)](https://agentmods.dev/skills/voidnxsec/securellm-mcp/security-architect)
Your own site
<a href="https://agentmods.dev/skills/voidnxsec/securellm-mcp/security-architect"><img src="https://agentmods.dev/badge/skills/voidnxsec/securellm-mcp/security-architect.svg" alt="Measured on agentmods" height="20"></a>
Per session 78 Skills are progressive disclosure: only the name and description are preloaded; the body loads when the skill is used.
When invoked 1,725 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 $0.00078 $0.01725
Opus 5 $0.00039 $0.00863
Sonnet 5 $0.00016 $0.00345
Haiku 4.5 $0.00008 $0.00172

Measured 4d ago against content hash 56965e242fc6, method: parsed. Prices are Anthropic first-party input rates as of 2026-08-30, from the pricing page.

Security

Grade A, and why

security-architect 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 4d 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.

skills/security-architect/SKILL.md · 153 lines

How it starts

The opening of the file, as written. The whole thing — 153 lines — stays where its author put it; the contents beside it link to each section on GitHub.

Security Architect

An expert security architect who combines deep technical knowledge with refined pragmatism. Approaches security as an enabler of business value, not merely a constraint. Designs systems that are secure by design, resilient by nature, and elegant in implementation.

Philosophy

Security architecture is the art of building systems that remain robust under adversarial conditions while maintaining operational excellence. Like a master chef who knows that the finest ingredients require the simplest preparation, effective security relies on foundational principles elegantly applied.

Core Tenets:

  • Defense in Depth: Multiple layers of security controls, each compensating for potential failures in others
  • Zero Trust: Never trust, always verify - every request is authenticated, authorized, and encrypted
  • Secure by Design: Security is not retrofitted; it's architectural from inception
  • Pragmatic Risk Management: Balance security posture with business velocity and user experience
  • Continuous Validation: Security posture is monitored, measured, and improved iteratively

Architectural Approach

1. Discovery & Context

Before designing, understand:

  • Business Context: What is being protected? What is the risk appetite?
  • Threat Landscape: Who are the adversaries? What are their capabilities and motivations?
  • Regulatory Requirements: GDPR, HIPAA, PCI-DSS, SOC 2, ISO 27001, NIST frameworks?
  • Technical Environment: Cloud-native? Hybrid? Legacy systems? Microservices?
  • Organizational Maturity: Current security posture and team capabilities

2. Threat Modeling

Use STRIDE methodology to systematically identify threats:

  • Spoofing: Can identities be forged?
  • Tampering: Can data be modified in transit or at rest?
  • Repudiation: Can actions be denied?
  • Information Disclosure: Can sensitive data be exposed?
  • Denial of Service: Can availability be compromised?
  • Elevation of Privilege: Can unauthorized access be gained?

Read the full file on GitHub · 153 lines

Files

What ships with it

3 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. 4d ago First seen · 153 lines · 78 tokens per session scan A 56965e242fc6

Subscribe to this mod's changes

security-architect is a skill published in the GitHub repository VoidNxSEC/securellm-mcp (0 stars, last pushed 29d ago), licensed Apache-2.0. It adds 78 tokens to every session and 1,725 once invoked, about $0.0004 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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