aws-wa-reliability

An AWS reliability review for infrastructure-as-code (IaC), the files that describe cloud resources. It checks whether systems can keep running, recover from failures, scale, and use backups.

In plain words
What is it for?
Use it to review Terraform configurations for multi-AZ deployment, Auto Scaling, health checks, backup retention, and disaster-recovery-related settings.
Why use it?
It helps find infrastructure settings that could cause outages or make recovery difficult before deployment.

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/roboco-io/plugins/aws-wa-reliability
Any agent
npx skills add roboco-io/plugins --skill aws-wa-reliability
Clone the repo
git clone --depth 1 https://github.com/roboco-io/plugins

Made for: Claude Code, Codex.

Per session 34 Skills are progressive disclosure: only the name and description are preloaded; the body loads when the skill is used.
When invoked 1,195 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 $0.00034 $0.01195
Opus 5 $0.00017 $0.00598
Sonnet 5 $0.00007 $0.00239
Haiku 4.5 $0.00003 $0.00120

Measured 2d ago against content hash 93f5d1c71104, method: parsed. Prices are Anthropic first-party input rates as of 2026-08-30, from the pricing page.

Security

Grade A, and why

aws-wa-reliability 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 2d 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/security/skills/aws-wa-reliability/SKILL.md · 180 lines

How it starts

The opening of the file, as written. The whole thing — 180 lines — stays where its author put it; the contents beside it link to each section on GitHub.

Reliability Pillar

장애 복구, 확장성, 고가용성 관점에서 IaC 코드를 검토합니다.

핵심 원칙

  1. 장애로부터 자동 복구: Auto Scaling, Health Check
  2. 복구 절차 테스트: DR 테스트
  3. 수평 확장: Multi-AZ, Auto Scaling
  4. 용량 추측 중단: 메트릭 기반 스케일링
  5. 변경 관리 자동화: IaC, CI/CD

검토 항목

REL-01: Multi-AZ 배포

심각도 탐지 유형
Critical 자동 탐지

검토 내용: 주요 리소스가 Multi-AZ로 배포되어 있는지 확인

Terraform 패턴:

# 취약 - 단일 AZ
resource "aws_db_instance" "bad" {
  multi_az = false
}

# 안전 - Multi-AZ
resource "aws_db_instance" "good" {
  multi_az = true
}

REL-02: Auto Scaling

심각도 탐지 유형
High 자동 탐지

검토 내용: Auto Scaling Group이 설정되어 있는지 확인

Terraform 패턴:

# 안전 - Auto Scaling 설정
resource "aws_autoscaling_group" "good" {
  min_size         = 2
  max_size         = 10
  desired_capacity = 2

  health_check_type         = "ELB"
  health_check_grace_period = 300
}

REL-03: 백업 설정

심각도 탐지 유형
High 자동 탐지

검토 내용: RDS, EBS 등의 자동 백업이 설정되어 있는지 확인

Terraform 패턴:

# 취약 - 백업 비활성화
resource "aws_db_instance" "bad" {
  backup_retention_period = 0
}

# 안전 - 백업 활성화
resource "aws_db_instance" "good" {
  backup_retention_period = 7
  backup_window           = "03:00-04:00"
}

REL-04: Health Check

심각도 탐지 유형
High 자동 탐지

검토 내용: ALB/NLB에 적절한 Health Check가 설정되어 있는지 확인

Terraform 패턴:

# 안전 - Health Check 설정
resource "aws_lb_target_group" "good" {
  health_check {
    enabled             = true
    healthy_threshold   = 2
    unhealthy_threshold = 3
    timeout             = 5
    interval            = 30
    path                = "/health"
    matcher             = "200"
  }
}

REL-05: S3 복제

심각도 탐지 유형
Medium 자동 탐지

검토 내용: 중요 데이터에 Cross-Region Replication이 설정되어 있는지 확인

REL-06: 단일 NAT Gateway

심각도 탐지 유형
Medium 자동 탐지

검토 내용: 각 AZ에 NAT Gateway가 있는지 확인 (단일 실패 지점 방지)

Read the full file on GitHub · 180 lines

Files

What ships with it

4 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. 2d ago First seen · 180 lines · 34 tokens per session scan A 93f5d1c71104

Subscribe to this mod's changes

aws-wa-reliability is a skill published in the GitHub repository roboco-io/plugins (21 stars, last pushed 1mo ago), licensed MIT. It adds 34 tokens to every session and 1,195 once invoked, about $0.0002 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 2026-08-30.

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