aws-skills

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핵심 기능

Shell-first — commands visible before execution
Common services: EC2, S3, IAM, Lambda, CloudFormation, Cost Explorer
Least-privilege IAM defaults
Region and profile aware
Works with Claude Code and Codex

라이브 데모

실제 사용 모습

aws-skill.replay ▶ 준비됨

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설치

작성자 저장소 · Claude Skills 공식 문서

사용 사례

실전 활용법: aws-skills

How to run a fleet-wide operation on EC2 safely

👤 Cloud ops engineers running one-off fleet operations ⏱ ~20 min intermediate

언제 쓸까: You need to patch or restart a group of instances matching a tag, without writing the whole script yourself.

흐름

Dry-run the query

Use aws-skill. List EC2 instances tagged Env=staging, App=api. Just describe, don't mutate.✓ 복사됨

→ Table of instance IDs with state
Plan the action

Now propose the command to restart all running ones. Show me the exact aws cli call before running it.✓ 복사됨

→ Command printed; no execution yet
Execute with guardrails

Execute in batches of 3 with 30s between batches. Abort if any fails.✓ 복사됨

→ Batched output with success/failure per batch

결과: A controlled fleet operation with no unpleasant surprises.

함정

Wrong profile/region destroys prod — Always echo the resolved profile + region as the first line of any action

Audit S3 bucket policies for public exposure

👤 Security engineers looking for public S3 risk ⏱ ~30 min intermediate

언제 쓸까: Before a compliance review, or after a misconfig alert.

흐름

List buckets

List all S3 buckets in our account with their public access block settings and any bucket policies that allow *.✓ 복사됨

→ Table with per-bucket status
Triage

Flag buckets that have public access and don't match our known public-bucket allowlist (list: [...]). Propose remediation for each.✓ 복사됨

→ Remediation plan per flagged bucket

결과: A prioritized remediation list for S3 public exposure.

함정

OAI / OAC for CloudFront looks public at the bucket level — Check CloudFront origin config before flagging

Scope an IAM policy to least privilege

👤 Engineers with an overly-broad policy to tighten ⏱ ~45 min advanced

언제 쓸까: A service account works with AdministratorAccess and you want to scope it down.

흐름

Collect usage

Pull the Access Analyzer / CloudTrail-derived actions used by this role over last 30 days.✓ 복사됨

→ Actions table
Generate scoped policy

Write the minimal policy matching those actions. No wildcard Resource unless necessary; comment where wildcards are justified.✓ 복사됨

→ Policy JSON with comments

결과: A least-privilege policy with documented rationale.

함정

30 days isn't long enough to capture all paths — Verify against known monthly or quarterly jobs before flipping the policy

함께 쓰기: claude-code-owasp-skill

Answer a cost question quickly

👤 Engineers and finance owners chasing spend ⏱ ~20 min intermediate

언제 쓸까: Finance asks 'why did S3 spend spike in April?' — you want an answer before the meeting.

흐름

Query

Use Cost Explorer to compare S3 spend April vs March by usage type.✓ 복사됨

→ Diff table by usage type
Explain

Which usage type grew most, and which bucket is most likely responsible?✓ 복사됨

→ Hypothesis with specific bucket candidates

결과: A specific attribution you can follow up on.

조합

다른 MCP와 조합해 10배 효율

aws-skill + terrashark-skill

AWS-skill for one-off ops, TerraShark for codified infra

Investigate with aws-skill, then codify the fix as Terraform with terrashark.✓ 복사됨

aws-skill + claude-code-owasp-skill

Security reviews on IAM and S3 configs

After IAM scoping, run OWASP review on the resulting policy.✓ 복사됨

도구

이 MCP가 노출하는 것

도구	입력	언제 호출	비용
EC2 fleet ops	-	Tag-scoped fleet ops	1+ AWS API calls
S3 policy audit	-	Security review	1+ API calls
IAM scoping	role_name	Tightening access	Access Analyzer + CloudTrail calls
Cost queries	service, range	Spend investigations	Cost Explorer calls
CFN/CDK scaffolding	-	New stacks	Claude tokens

비용 및 제한

운영 비용

API 쿼터: AWS API limits vary per service; usually non-issue for interactive use
호출당 토큰: 5-15k for planning; execution is free of Claude tokens
금액: Free skill; AWS usage billed as normal
팁: Cost Explorer API has per-request pricing. Cache results when iterating.

보안

권한, 시크릿, 파급범위

자격 증명 저장: Standard AWS CLI credentials (shared config, SSO). Skill reads active profile.

데이터 외부 송신: All AWS API calls. Command outputs may contain sensitive data (ARNs, tags).

절대 부여 금지: AdministratorAccess for interactive use

Always verify active profile and region before destructive commands. Skill prints both before execution — don't skip the check.
Use SSO short-lived credentials rather than long-lived access keys.

문제 해결

자주 발생하는 오류와 해결

AccessDenied despite correct profile

Role session may have expired. Re-authenticate (aws sso login or STS refresh)

확인: aws sts get-caller-identity

Commands hit the wrong region

Skill respects AWS_REGION env; set explicitly or pass --region each call

Rate-limiting on large fleet ops

Use the skill's batch mode with delays

대안

aws-skills 다른 것과 비교

대안	언제 쓰나	단점/장점
AWS MCP server	You want native MCP tool calls instead of shell-first	Less shell visibility; different trust model