A reference guide for using Amazon Web Services, a cloud platform that provides services such as servers, storage, databases, networking, and monitoring. It points different engineering roles to product- and role-specific AWS information.

Work involving AWS services such as EC2, Lambda, ECS, S3, RDS, DynamoDB, IAM, CloudWatch, and related infrastructure or application architecture.

AWS has many products and configuration choices, so engineers can look in the wrong place or miss team guidance. This gives the team a shared map of the relevant AWS knowledge.

stack-aws — Skill for Claude Code by e-t-y-b

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.

Any agent

npx skills add e-t-y-b/etyb-skills --skill aws

Clone the repo

git clone --depth 1 https://github.com/e-t-y-b/etyb-skills

Made for: Claude Code.

Or install etyb, the plugin that ships this one along with the rest of its 14 skills, 5 agents, 4 hooks.

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.

README.md

[![agentmods](https://agentmods.dev/badge/skills/e-t-y-b/etyb-skills/aws/github.svg)](https://agentmods.dev/skills/e-t-y-b/etyb-skills/aws)

Your own site

<a href="https://agentmods.dev/skills/e-t-y-b/etyb-skills/aws"><img src="https://agentmods.dev/badge/skills/e-t-y-b/etyb-skills/aws/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.

Your own site · 80×15

<a href="https://agentmods.dev/skills/e-t-y-b/etyb-skills/aws"><img src="https://agentmods.dev/badge/skills/e-t-y-b/etyb-skills/aws.svg" alt="Reviewed on agentmods" width="80" height="20"></a>

Per session 313 Skills are progressive disclosure: only the name and description are preloaded; the body loads when the skill is used.

When invoked 3,945 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.

Model	Per session	Once invoked
Fable 5.1	$0.00313	$0.03945
Opus 5	$0.00156	$0.01972
Sonnet 5	$0.00063	$0.00789
Haiku 4.5	$0.00031	$0.00394

Measured 11d ago against content hash fdee6cf8c24d, method: parsed. Prices are Anthropic first-party input rates as of 2026-09-11, from the pricing page.

Security

Grade A, and why

stack-aws 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 11d 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.

stacks/aws/SKILL.md · 132 lines

How it starts

The opening of the file, as written. The whole thing — 132 lines — stays where its author put it; the contents beside it link to each section on GitHub.

AWS Stack — Team Briefing

This is a knowledge overlay, not a new specialist. The existing ETYB team does the work — backend-architect writes the backend code, devops-engineer wires the deploys, security-engineer enforces the boundary. This pack tells each role where the current AWS knowledge lives.

Where the full briefing lives

The full Stack briefing lives in this same folder. Per-product and per-role pages are siblings of this SKILL.md. Every page carries last_verified_on stamps and authoritative-source URLs in its frontmatter; see skills/etyb/core/knowledge-currency.md for the drift-check protocol that uses them.

Stack briefing: stacks/aws/index.md
Per-product pages: stacks/aws/<product>.md — one per entry in products_covered above
Per-role views: stacks/aws/<role>.md — one per role in applies_to_roles above

When ETYB is installed locally these are read directly from disk. For third-party agents without the install, the same content is reachable as raw markdown at https://raw.githubusercontent.com/e-t-y-b/etyb-skills/main/stacks/aws/<page>.md.

When delegate_to_skills (frontmatter above) lists a first-party vendor MCP/skill that's installed in the user's environment, ETYB defers to it first. The in-repo Stack content is the curated fallback.

What changed in 2025-2026 that older training data misses

Critical context — an LLM with a 2024 cutoff will get these wrong:

Bedrock now ships AgentCore — the runtime layer for production agents. AgentCore Runtime, AgentCore Browser, AgentCore Memory GA'd through 2025-2026. Don't propose "raw Bedrock agents" as the deployment surface for new agentic workloads; AgentCore is the surface (see ai-ml-engineer overlay).
Strands Agents SDK was open-sourced May 2025. It's the AWS-blessed agent authoring kit and pairs with AgentCore Runtime. Older guidance pointing at LangChain-only as the agent framework is incomplete.
Aurora DSQL GA'd May 2025. Postgres-compatible, serverless, multi-region active-active with 99.999% availability. Express configuration (Mar 2026) gets you a DB in two clicks. Replaces large swathes of "we need a global Postgres" architecture.
EKS Auto Mode (re:Invent 2024) — managed compute, networking, storage with a single API call. Karpenter v1 GA'd late 2024 with a breaking CRD migration (v1beta1 → v1, NodePool/EC2NodeClass replacing Provisioner/AWSNodeTemplate). New EKS clusters in 2026 default to Auto Mode + Karpenter v1.
Lambda SnapStart for Python, .NET, Node.js added in 2024-2025. Java is no longer the only SnapStart language. Cold start guidance changed accordingly.
VPC Lattice has matured into the default L7 service-to-service surface — IPv6 dual-stack, custom domains, configurable Resource Gateway IPs all landed in 2025.
ECS Express Mode launched Nov 2025. AWS Copilot CLI is end-of-support June 2026. App Runner is in maintenance mode. Propose ECS Express Mode for "deploy a container to HTTPS in one step" — don't propose Copilot or App Runner for net-new.
CDK v1 is fully EOL. CDK v2 (aws-cdk-lib) is the only supported track. Mixins, ECS deployment strategies (built-in Linear/Canary), EKS Hybrid Nodes constructs, and cdk --revert-drift are 2025-2026 additions.
AWS Copilot/CodeWhisperer renamed to Amazon Q Developer. Amazon Q Business is the enterprise RAG/search tier. The "CodeWhisperer" name is dead.
Amazon Linux 2 (AL2) reached end of standard support June 2025; maintenance support ends June 2026. New AMIs and base images should target AL2023.
Step Functions JSONata + Variables (re:Invent 2024) replace the ResultPath/InputPath dance for new state machines. TestState API GA Mar 2026 — test states in isolation before deploy.

Read the full file on GitHub · 132 lines

Files

What ships with it

47 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.

11d ago First seen · 132 lines · 313 tokens per session scan A fdee6cf8c24d

Subscribe to this mod's changes

stack-aws is a skill published in the GitHub repository e-t-y-b/etyb-skills (10 stars, last pushed 2mo ago), licensed MIT. It adds 313 tokens to every session and 3,945 once invoked, about $0.0016 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.

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