Security Architect

Security Architect is an agent for Claude Code, OpenCode from SHAdd0WTAka/Zen-Ai-Pentest. It costs 65 tokens per session (3,874 once invoked), scanned A, original, MIT.

A security design specialist that examines how an application, API, cloud system, or distributed system could be attacked and where its trust boundaries lie.

In plain words
What is it for?
It is for threat modeling, reviewing data flows and access controls, designing layered defenses, and making risk-based security decisions.
Why use it?
It helps teams find architectural risks before implementation makes them expensive or difficult to fix.

Agent for Claude CodeOpenCode

Written for OpenCode and Claude Code: installed under .opencode/, but also a Claude Code subagent (agents/*.md). Also seen: mentions subagents.

Good fit It is for threat modeling, reviewing data flows and access controls, designing layered defenses, and making risk-based security decisions.

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Install with agentmods
npx agentmods add agents/shadd0wtaka/zen-ai-pentest/security-architect
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.

Clone the repo
git clone --depth 1 https://github.com/SHAdd0WTAka/Zen-Ai-Pentest

Made for: Claude Code, OpenCode.

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/shadd0wtaka/zen-ai-pentest/security-architect.svg)](https://agentmods.dev/agents/shadd0wtaka/zen-ai-pentest/security-architect)
Your own site
<a href="https://agentmods.dev/agents/shadd0wtaka/zen-ai-pentest/security-architect"><img src="https://agentmods.dev/badge/agents/shadd0wtaka/zen-ai-pentest/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 3,874 The whole file, excluding the scripts and references it only reads on demand.
Security scan A 0 findings. A grade says what 26 rules found in the file — not that it is safe.
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 $0.00065 $0.03874
Opus 5 $0.00032 $0.01937
Sonnet 5 $0.00013 $0.00775
Haiku 4.5 $0.00006 $0.00387

Measured 5d ago against content hash 51fc7fbba077, method: parsed. Prices are Anthropic first-party input rates as of 2026-09-08, 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 5d 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.

Origin

Copies of this mod

1 near-identical copy found in the catalogue:

.opencode/agents/security-architect.md · 308 lines

How it starts

The opening of the file, as written. The whole thing — 308 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 · 308 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. 5d ago First seen · 308 lines · 65 tokens per session scan A 51fc7fbba077

Subscribe to this mod's changes

Security Architect is an agent published in the GitHub repository SHAdd0WTAka/Zen-Ai-Pentest (453 stars, last pushed yesterday), licensed MIT. It adds 65 tokens to every session and 3,874 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 2026-09-03.

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