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.
npx skills add giuseppe-trisciuoglio/developer-kit --skill aws-sdk-java-v2-s3git clone --depth 1 https://github.com/giuseppe-trisciuoglio/developer-kitWrote 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.
[](https://agentmods.dev/skills/giuseppe-trisciuoglio/developer-kit/aws-sdk-java-v2-s3)<a href="https://agentmods.dev/skills/giuseppe-trisciuoglio/developer-kit/aws-sdk-java-v2-s3"><img src="https://agentmods.dev/badge/skills/giuseppe-trisciuoglio/developer-kit/aws-sdk-java-v2-s3/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.
<a href="https://agentmods.dev/skills/giuseppe-trisciuoglio/developer-kit/aws-sdk-java-v2-s3"><img src="https://agentmods.dev/badge/skills/giuseppe-trisciuoglio/developer-kit/aws-sdk-java-v2-s3.svg" alt="Reviewed on agentmods" width="80" height="20"></a>- Socket pass
- Snyk pass
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 | $0.00058 | $0.02219 |
| Opus 5.5 | $0.00023 | $0.00888 |
| Sonnet 5.5 | $0.00012 | $0.00444 |
| Haiku 4.5 | $0.00006 | $0.00222 |
Grade A, and why
aws-sdk-java-v2-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 1mo 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.
How it starts
The opening of the file, as written. The whole thing — 288 lines — stays where its author put it; the contents beside it link to each section on GitHub.
AWS SDK for Java 2.x - Amazon S3
Overview
Provides patterns for S3 operations: bucket management, object upload/download with multipart support, presigned URLs, S3 Transfer Manager, and S3-specific configurations using AWS SDK for Java 2.x.
When to Use
- Creating, listing, or deleting S3 buckets with proper configuration
- Uploading or downloading objects from S3 with metadata and encryption
- Working with multipart uploads for large files (>100MB) with error handling
- Generating presigned URLs for temporary access to S3 objects
- Copying or moving objects between S3 buckets with metadata preservation
- Setting object metadata, storage classes, and access controls
- Implementing S3 Transfer Manager for optimized file transfers
- Integrating S3 with Spring Boot applications for cloud storage
Quick Reference
| Operation | Method | Notes |
|---|---|---|
| Create bucket | createBucket() |
Wait with waiter().waitUntilBucketExists() |
| Upload object | putObject() |
Use RequestBody.fromFile() |
| Download object | getObject() |
Streams to file or memory |
| Delete objects | deleteObjects() |
Batch up to 1000 keys |
| Presigned URL | presigner.presignGetObject() |
Max 7 days expiration |
Storage Classes
| Class | Use Case |
|---|---|
STANDARD |
Frequently accessed data |
STANDARD_IA |
Infrequently accessed data |
GLACIER |
Long-term archive |
INTELLIGENT_TIERING |
Automatic cost optimization |
Instructions
1. Add Dependencies
<dependency>
<groupId>software.amazon.awssdk</groupId>
<artifactId>s3</artifactId>
<version>2.20.0</version>
</dependency>
<dependency>
<groupId>software.amazon.awssdk</groupId>
<artifactId>s3-transfer-manager</artifactId>
<version>2.20.0</version>
</dependency>
2. Create S3 Client
S3Client s3Client = S3Client.builder()
.region(Region.US_EAST_1)
.build();
// With retry logic
S3Client s3Client = S3Client.builder()
.region(Region.US_EAST_1)
.overrideConfiguration(b -> b
.retryPolicy(RetryPolicy.builder()
.numRetries(3)
.build()))
.build();
What ships with it
4 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.
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.
- 1mo ago First seen · 288 lines · 58 tokens per session scan A 27687413af97
aws-sdk-java-v2-s3 is a skill published in the GitHub repository giuseppe-trisciuoglio/developer-kit (360 stars, last pushed 1mo ago), licensed MIT. It adds 58 tokens to every session and 2,219 once invoked, about $0.0002 per session on Opus 5.5. 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 2026-09-10.
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