s3

s3 is a skill for Claude Code from aws-samples/sample-claude-code-plugins-for-startups. It costs 54 tokens per session (2,184 once invoked), scanned A, original, MIT-0.

A guide for storing and protecting files and other data in Amazon S3, AWS's object storage service.

In plain words
What is it for?
Use it to design S3 storage, configure bucket policies, improve large-workload performance, set lifecycle rules, and fix access problems.
Why use it?
It helps choose suitable bucket settings, access rules, storage behavior, and performance options while avoiding accidental access or unnecessary storage cost.

Skill for Claude Code ✓ vendor

Written for Claude Code: shipped in a Claude Code plugin.

Part of the aws-dev-toolkit plugin — 35 skills, 11 agents, 3 MCP servers shipped together

Good fit Use it to design S3 storage, configure bucket policies, improve large-workload performance, set lifecycle rules, and fix access problems.

Compare 6 skills from other repositories ↓
Install with agentmods
npx agentmods add skills/aws-samples/sample-claude-code-plugins-for-startups/s3
About the project

Claude Code Plugin Marketplace for Startups on AWS is a collection of Claude Code plugins for teams building, migrating, or reviewing applications on AWS. Developers add the marketplace and install plugins that provide skills, sub-agents, and MCP servers. The catalogue entries are components of this marketplace.

aws-samples/sample-claude-code-plugins-for-startups · 13 stars · on GitHub

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 aws-samples/sample-claude-code-plugins-for-startups --skill s3
Clone the repo
git clone --depth 1 https://github.com/aws-samples/sample-claude-code-plugins-for-startups

Made for: Claude Code.

Or install aws-dev-toolkit, the plugin that ships this one along with the rest of its 35 skills, 11 agents, 3 MCP servers.

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.

agentmods badge for s3

README.md
[![agentmods](https://agentmods.dev/badge/skills/aws-samples/sample-claude-code-plugins-for-startups/s3.svg)](https://agentmods.dev/skills/aws-samples/sample-claude-code-plugins-for-startups/s3)
Your own site
<a href="https://agentmods.dev/skills/aws-samples/sample-claude-code-plugins-for-startups/s3"><img src="https://agentmods.dev/badge/skills/aws-samples/sample-claude-code-plugins-for-startups/s3.svg" alt="Measured on agentmods" height="20"></a>
Per session 54 Skills are progressive disclosure: only the name and description are preloaded; the body loads when the skill is used.
When invoked 2,184 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 unknown 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 5.1 $0.00054 $0.02184
Opus 5 $0.00027 $0.01092
Sonnet 5 $0.00011 $0.00437
Haiku 4.5 $0.00005 $0.00218

Measured 7d ago against content hash 3001cdab447c, method: parsed. Prices are Anthropic first-party input rates as of 2026-09-07, from the pricing page.

Security

Grade A, and why

s3 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 7d 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/aws-dev-toolkit/skills/s3/SKILL.md · 200 lines

The source is not reproduced here

Licensed MIT-0

The repository is licensed MIT-0, which this catalogue does not treat as permission to reproduce the file. Read it at the source.

Read it on GitHub

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. 7d ago First seen · 200 lines · 54 tokens per session scan A 3001cdab447c

Subscribe to this mod's changes

s3 is a skill published in the GitHub repository aws-samples/sample-claude-code-plugins-for-startups (13 stars, last pushed 24d ago), licensed MIT-0. It adds 54 tokens to every session and 2,184 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 2026-08-30.

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