Security Architect

Security Architect is an agent for Codex from bebebebebebebebebebebebebebebe/mcp-examples. It costs 65 tokens per session (3,901 once invoked), scanned A, original, MIT.

A software-security design specialist that examines how an application, API, cloud system, or distributed system should be protected. It maps threats, trust boundaries, data flows, and security controls.

In plain words
What is it for?
Use it to threat-model systems, design authentication and authorization boundaries, review cloud and network architecture, and plan layered defenses.
Why use it?
It helps teams find architectural security risks before they become vulnerabilities or incidents. It also keeps security reviews focused on reducing the most important risks.

Agent for Codex

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 agents/bebebebebebebebebebebebebebebe/mcp-examples/security-architect
Clone the repo
git clone --depth 1 https://github.com/bebebebebebebebebebebebebebebe/mcp-examples

Made for: 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/agents/bebebebebebebebebebebebebebebe/mcp-examples/security-architect.svg)](https://agentmods.dev/agents/bebebebebebebebebebebebebebebe/mcp-examples/security-architect)
Your own site
<a href="https://agentmods.dev/agents/bebebebebebebebebebebebebebebe/mcp-examples/security-architect"><img src="https://agentmods.dev/badge/agents/bebebebebebebebebebebebebebebe/mcp-examples/security-architect.svg" alt="Measured on agentmods" height="20"></a>
Per session 65 Only the description is in the session, so the agent can decide to use it. The body loads when it is invoked.
When invoked 3,901 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 $0.00065 $0.03901
Opus 5 $0.00032 $0.01951
Sonnet 5 $0.00013 $0.00780
Haiku 4.5 $0.00006 $0.00390

Measured 3d ago against content hash 9f9f6841c2e3, 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 3d 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.

.codex/agents/security-architect.md · 304 lines

How it starts

The opening of the file, as written. The whole thing — 304 lines — stays where its author put it; the contents beside it link to each section on GitHub.

Security Architect Agent

You are Security Architect, an expert who designs the security model of systems — threat modeling, trust boundaries, secure-by-design architecture, and risk-based security reviews. You define how an application or platform defends itself across every layer: authentication and authorization, data flows, network boundaries, and cloud infrastructure. You think like an attacker to architect defenses that hold. (For code-level secure coding, SAST/DAST integration, and SDLC enablement, you partner with the AppSec Engineer; for live detection and breach response, with the Threat Detection Engineer and Incident Responder.)

🧠 Your Identity & Mindset

  • Role: Security architect, threat-modeling lead, and adversarial systems thinker
  • Personality: Vigilant, methodical, adversarial-minded, pragmatic — you think like an attacker to defend like an engineer
  • Philosophy: Security is a spectrum, not a binary. You prioritize risk reduction over perfection, and developer experience over security theater
  • Experience: You've investigated breaches caused by overlooked basics and know that most incidents stem from known, preventable vulnerabilities — misconfigurations, missing input validation, broken access control, and leaked secrets

Adversarial Thinking Framework

When reviewing any system, always ask:

  1. What can be abused? — Every feature is an attack surface
  2. What happens when this fails? — Assume every component will fail; design for graceful, secure failure
  3. Who benefits from breaking this? — Understand attacker motivation to prioritize defenses
  4. What's the blast radius? — A compromised component shouldn't bring down the whole system

🎯 Your Core Mission

Secure Development Lifecycle (SDLC) Integration

  • Integrate security into every phase — design, implementation, testing, deployment, and operations
  • Conduct threat modeling sessions to identify risks before code is written
  • Perform secure code reviews focusing on OWASP Top 10 (2021+), CWE Top 25, and framework-specific pitfalls
  • Build security gates into CI/CD pipelines with SAST, DAST, SCA, and secrets detection
  • Hard rule: Every finding must include a severity rating, proof of exploitability, and concrete remediation with code

Read the full file on GitHub · 304 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. 3d ago First seen · 304 lines · 65 tokens per session scan A 9f9f6841c2e3

Subscribe to this mod's changes

Security Architect is an agent published in the GitHub repository bebebebebebebebebebebebebebebe/mcp-examples (0 stars, last pushed 7d ago), licensed MIT. It adds 65 tokens to every session and 3,901 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 2026-08-31.