What is aws-storage-and-databases?

An AWS guide for choosing, designing, securing, sizing, and backing up storage and database services. AWS is a cloud platform offering object storage, filesystems, relational databases, key-value stores, caches, search, and analytics.

Use it to plan S3, EBS, EFS, RDS or Aurora, DynamoDB, ElastiCache, OpenSearch, Redshift, and related AWS services.

It helps match a data store to the way an application reads and writes data while accounting for security, backups, performance, and cost.

aws-storage-and-databases — Skill for Claude Code by jsgerman-oss

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 jsgerman-oss/blackrim-nimbus-skills --skill aws-storage-and-databases

Clone the repo

git clone --depth 1 https://github.com/jsgerman-oss/blackrim-nimbus-skills

Made for: Claude Code.

Or install cloud-aws, the plugin that ships this one along with the rest of its 6 skills, 1 command, 2 agents.

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/jsgerman-oss/blackrim-nimbus-skills/aws-storage-and-databases/github.svg)](https://agentmods.dev/skills/jsgerman-oss/blackrim-nimbus-skills/aws-storage-and-databases)

Your own site

<a href="https://agentmods.dev/skills/jsgerman-oss/blackrim-nimbus-skills/aws-storage-and-databases"><img src="https://agentmods.dev/badge/skills/jsgerman-oss/blackrim-nimbus-skills/aws-storage-and-databases/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/jsgerman-oss/blackrim-nimbus-skills/aws-storage-and-databases"><img src="https://agentmods.dev/badge/skills/jsgerman-oss/blackrim-nimbus-skills/aws-storage-and-databases.svg" alt="Reviewed on agentmods" width="80" height="20"></a>

Per session 63 Skills are progressive disclosure: only the name and description are preloaded; the body loads when the skill is used.

When invoked 1,907 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	$0.00063	$0.01907
Opus 5	$0.00032	$0.00954
Sonnet 5	$0.00013	$0.00381
Haiku 4.5	$0.00006	$0.00191

Measured 12d ago against content hash 212e2788a43c, method: parsed. Prices are Anthropic first-party input rates as of 2026-09-12, from the pricing page.

Security

Grade A, and why

aws-storage-and-databases 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 12d 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.

cloud-aws/skills/aws-storage-and-databases/SKILL.md · 130 lines

How it starts

The opening of the file, as written. The whole thing — 130 lines — stays where its author put it; the contents beside it link to each section on GitHub.

AWS Storage and Databases

When to use

Choosing between relational, document, key-value, search, cache, and object storage.
Designing DynamoDB partition / sort keys and GSIs from access patterns.
Sizing an RDS / Aurora cluster and choosing a failover strategy.
Hardening data-at-rest encryption, backups, and PITR.
Auditing data egress, retention, lifecycle, and replication.

Decision tree

Need	Service
Object storage for blobs, backups, data lake, static assets	S3
Block storage attached to an instance	EBS
Shared POSIX filesystem across compute	EFS (general) or FSx (Lustre / NetApp / Windows)
ACID, relational, joins, OLTP	RDS (Postgres / MySQL / MariaDB) or Aurora
Single-digit-ms key-value or document with known access patterns	DynamoDB
Sub-ms cache or pub/sub	ElastiCache (Redis / Valkey) or MemoryDB
Full-text / log search	OpenSearch
Petabyte analytics	Redshift, Athena (S3 + Glue), or Spark on EMR
Graph	Neptune
Time series	Timestream

S3 defaults

Encryption: SSE-S3 minimum; SSE-KMS with a CMK for any data subject to access-audit requirements.
Public access: Block Public Access on at the account level — use CloudFront + OAC for serving.
Versioning: on for any bucket holding state, source artifacts, or backups.
Lifecycle: transition to Standard-IA at 30 d, Glacier IR / Flexible at 90 d, Deep Archive at 365 d — tune to access reality.
Object Lock: on for compliance / ransomware-recovery workloads.
Replication (CRR / SRR): for DR, with replica encryption keys in the destination region.
Notifications: s3:ObjectCreated:* → EventBridge for downstream pipelines, not legacy direct-to-Lambda.

RDS / Aurora defaults

Engine: prefer Aurora over plain RDS for Postgres / MySQL when you want fast failover, storage autoscaling, and read replicas across AZs.
Multi-AZ: on for prod. Aurora replicates by default across 3 AZs; RDS Multi-AZ is a separate flag.
Backups: 7 d retention minimum; 30 d for prod; longer if regulated. PITR on.
Parameter group: never use default. Pin rds.force_ssl=1, log_min_duration_statement=500, shared_preload_libraries=pg_stat_statements.
Encryption: KMS encrypted at rest; force rds.force_ssl for in-transit.
Performance Insights: on (7 d free, 731 d retention is paid but cheap relative to debugging without it).
Maintenance window: outside business hours; pin minor version updates to a known cadence.

Read the full file on GitHub · 130 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.

12d ago First seen · 130 lines · 63 tokens per session scan A 212e2788a43c

Subscribe to this mod's changes

aws-storage-and-databases is a skill published in the GitHub repository jsgerman-oss/blackrim-nimbus-skills (8 stars, last pushed 26d ago), licensed MIT. It adds 63 tokens to every session and 1,907 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 2026-08-31.

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