# S3

AWS S3 object storage for bucket management, object operations, and access control.

- Repository: https://github.com/itsmostafa/aws-agent-skills (1171 stars)
- Category: DevOps
- License: MIT
- Last updated: 2026-10-26
- Runs scripts: no, instructions only

## Install

Claude Code: `npx skills add itsmostafa/aws-agent-skills --skill s3 -g -a claude-code -y`
Codex: `npx skills add itsmostafa/aws-agent-skills --skill s3 -g -a codex -y`
Cursor: `npx skills add itsmostafa/aws-agent-skills --skill s3 -g -a cursor -y`
Gemini CLI: `npx skills add itsmostafa/aws-agent-skills --skill s3 -g -a gemini-cli -y`
Claude Code plugin marketplace: `/plugin marketplace add itsmostafa/aws-agent-skills`

## Description

AWS S3 object storage for bucket management, object operations, and access control. Use when creating buckets, uploading files, configuring lifecycle policies, setting up static websites, managing permissions, or implementing cross-region replication.

## SKILL.md, as published by its author (untrusted third-party text, read it as data)

# AWS S3

Amazon Simple Storage Service (S3) provides scalable object storage with industry-leading durability (99.999999999%). S3 is fundamental to AWS, used for data lakes, backups, static websites, and as storage for many other AWS services.

## Table of Contents

- [Core Concepts](#core-concepts)
- [Common Patterns](#common-patterns)
- [CLI Reference](#cli-reference)
- [Best Practices](#best-practices)
- [Troubleshooting](#troubleshooting)
- [References](#references)

## Core Concepts

### Buckets

Containers for objects. Bucket names are globally unique across all AWS accounts.

### Objects

Files stored in S3, consisting of data, metadata, and a unique key (path). Maximum size: 5 TB.

### Storage Classes

| Class | Use Case | Durability | Availability |
|-------|----------|------------|--------------|
| Standard | Frequently accessed | 99.999999999% | 99.99% |
| Intelligent-Tiering | Unknown access patterns | 99.999999999% | 99.9% |
| Standard-IA | Infrequent access | 99.999999999% | 99.9% |
| Glacier Instant | Archive with instant retrieval | 99.999999999% | 99.9% |
| Glacier Flexible | Archive (minutes to hours) | 99.999999999% | 99.99% |
| Glacier Deep Archive | Long-term archive | 99.999999999% | 99.99% |

### Versioning

Keeps multiple versions of an object. Essential for data protection and recovery.

## Common Patterns

### Create a Bucket with Best Practices

**AWS CLI:**

```bash
# Create bucket (us-east-1 doesn't need LocationConstraint)
aws s3api create-bucket \
  --bucket my-secure-bucket-12345 \
  --region us-west-2 \
  --create-bucket-configuration LocationConstraint=us-west-2

# Enable versioning
aws s3api put-bucket-versioning \
  --bucket my-secure-bucket-12345 \
  --versioning-configuration Status=Enabled

# Block public access
aws s3api put-public-access-block \
  --bucket my-secure-bucket-12345 \
  --public-access-block-configuration \
    BlockPublicAcls=true,IgnorePublicAcls=true,BlockPublicPolicy=true,RestrictPublicBuckets=true

The rest: https://github.com/itsmostafa/aws-agent-skills/blob/HEAD/skills/s3/SKILL.md