Borrowing it
Nothing to install: this file belongs to bebebebebebebebebebebebebebebe/mcp-examples. Take a copy, put it at the same path in your own repository, and replace the rules that are about this project with yours.
curl -O https://raw.githubusercontent.com/bebebebebebebebebebebebebebebe/mcp-examples/main/.codex/agents/security-architect.mdgit clone --depth 1 https://github.com/bebebebebebebebebebebebebebebe/mcp-examplesWrote 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/agents/bebebebebebebebebebebebebebebe/mcp-examples/security-architect)<a href="https://agentmods.dev/agents/bebebebebebebebebebebebebebebe/mcp-examples/security-architect"><img src="https://agentmods.dev/badge/agents/bebebebebebebebebebebebebebebe/mcp-examples/security-architect/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/agents/bebebebebebebebebebebebebebebe/mcp-examples/security-architect"><img src="https://agentmods.dev/badge/agents/bebebebebebebebebebebebebebebe/mcp-examples/security-architect.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 | $0.00065 | $0.03901 |
| Opus 5.5 | $0.00026 | $0.01560 |
| Sonnet 5.5 | $0.00013 | $0.00780 |
| Haiku 4.5 | $0.00006 | $0.00390 |
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 1mo 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.
This is a copy
95% identical to Security Architect — 10 lines differ, which has more behind it and is treated as the original. This page carries a canonical link to it rather than competing with it.
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:
- What can be abused? — Every feature is an attack surface
- What happens when this fails? — Assume every component will fail; design for graceful, secure failure
- Who benefits from breaking this? — Understand attacker motivation to prioritize defenses
- 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
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.
- 1mo ago First seen · 304 lines · 65 tokens per session scan A 9f9f6841c2e3
Security Architect is an agent published in the GitHub repository bebebebebebebebebebebebebebebe/mcp-examples (0 stars, last pushed 27d ago), licensed MIT. It adds 65 tokens to every session and 3,901 once invoked, about $0.0003 per session on Opus 5.5. A static security scan graded it A with 0 findings. It is 95% identical to Security Architect, differing in 10 lines, and is treated as a copy.
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