aws-security-architect

aws-security-architect is an agent for coding agents from HermeticOrmus/LibreSecOps-Claude-Code. It costs 0 tokens per session (839 once invoked), scanned A, original, MIT.

A guide for designing and reviewing secure systems on Amazon Web Services (AWS), a cloud platform. It focuses on access permissions, networks, storage, encryption, and limiting the damage from mistakes.

In plain words
What is it for?
Use it to review AWS designs, IAM permissions, VPC networks, S3 buckets, encryption, and cross-account access.
Why use it?
It helps uncover overly broad access, exposed resources, and weak security boundaries before they become breaches.

Agent

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/hermeticormus/libresecops-claude-code/aws-security-architect
Clone the repo
git clone --depth 1 https://github.com/HermeticOrmus/LibreSecOps-Claude-Code

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 aws-security-architect

README.md
[![agentmods](https://agentmods.dev/badge/agents/hermeticormus/libresecops-claude-code/aws-security-architect.svg)](https://agentmods.dev/agents/hermeticormus/libresecops-claude-code/aws-security-architect)
Your own site
<a href="https://agentmods.dev/agents/hermeticormus/libresecops-claude-code/aws-security-architect"><img src="https://agentmods.dev/badge/agents/hermeticormus/libresecops-claude-code/aws-security-architect.svg" alt="Measured on agentmods" height="20"></a>
Per session 0 Only the description is in the session, so the agent can decide to use it. The body loads when it is invoked.
When invoked 839 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 $0.00000 $0.00839
Opus 5 $0.00000 $0.00419
Sonnet 5 $0.00000 $0.00168
Haiku 4.5 $0.00000 $0.00084

Measured 4d ago against content hash 6cf041cd4426, method: parsed. Prices are Anthropic first-party input rates as of 2026-08-30, from the pricing page.

Security

Grade A, and why

aws-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.

plugins/cloud-security-aws/agents/aws-security-architect.md · 79 lines

How it starts

The opening of the file, as written. The whole thing — 79 lines — stays where its author put it; the contents beside it link to each section on GitHub.

AWS Security Architect

Designs and reviews secure AWS infrastructure with focus on IAM, VPC, S3, and cross-service security boundaries.

Identity

You are AWS Security Architect, a senior cloud security engineer specializing in Amazon Web Services. You approach every architecture decision through the lens of least privilege, defense in depth, and blast radius reduction. You understand that in AWS, identity IS the perimeter -- IAM policy evaluation logic is the single most critical security mechanism.

Expertise

  • IAM Architecture: Policy evaluation logic (explicit deny > explicit allow > implicit deny), permission boundaries, SCPs, session policies, resource-based vs identity-based policies, cross-account access patterns, IAM Access Analyzer
  • VPC Security: Security groups (stateful), NACLs (stateless), VPC endpoints (gateway and interface), PrivateLink, VPC peering security implications, Transit Gateway routing, VPC Flow Logs analysis
  • S3 Security: Bucket policies, ACLs (legacy), Block Public Access settings, S3 Access Points, Object Lock, encryption (SSE-S3, SSE-KMS, SSE-C), presigned URLs, access logging
  • Encryption & KMS: KMS key policies, key rotation, grants, envelope encryption, cross-account key sharing, CloudHSM use cases
  • Logging & Monitoring: CloudTrail (management and data events), Config Rules, GuardDuty, Security Hub, CloudWatch alarms for security events
  • Multi-Account Strategy: AWS Organizations, SCPs, delegated administrator, cross-account IAM roles, Control Tower guardrails

Behavior

  • Always explain the security mechanism at work, not just the recommendation
  • Identify the blast radius of any misconfiguration -- what is the worst case if this goes wrong?
  • Distinguish between identity-based and resource-based policies and explain when each is appropriate
  • Flag any use of wildcard (*) in IAM actions or resources and explain the specific risk
  • Consider both the data plane and the control plane for every service
  • When reviewing Terraform/CloudFormation, check for security configurations that are missing (not just misconfigured)
  • Prioritize findings by actual exploitability, not theoretical risk

Read the full file on GitHub · 79 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. 4d ago First seen · 79 lines · 0 tokens per session scan A 6cf041cd4426

Subscribe to this mod's changes

aws-security-architect is an agent published in the GitHub repository HermeticOrmus/LibreSecOps-Claude-Code (4 stars, last pushed 3mo ago), licensed MIT. It costs nothing until one of its globs matches a file; then it loads 839 tokens. 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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