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-cloudformation-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-cloudformation-s3)<a href="https://agentmods.dev/skills/giuseppe-trisciuoglio/developer-kit/aws-cloudformation-s3"><img src="https://agentmods.dev/badge/skills/giuseppe-trisciuoglio/developer-kit/aws-cloudformation-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-cloudformation-s3"><img src="https://agentmods.dev/badge/skills/giuseppe-trisciuoglio/developer-kit/aws-cloudformation-s3.svg" alt="Reviewed on agentmods" width="80" height="20"></a>- NVIDIA SkillSpector 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 | $0.00050 | $0.01645 |
| Opus 5 | $0.00025 | $0.00822 |
| Sonnet 5 | $0.00010 | $0.00329 |
| Haiku 4.5 | $0.00005 | $0.00164 |
Grade A, and why
aws-cloudformation-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 9d 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 — 230 lines — stays where its author put it; the contents beside it link to each section on GitHub.
AWS CloudFormation S3 Patterns
Provides S3 bucket configurations, policies, versioning, lifecycle rules, and CloudFormation template structure best practices for production-ready infrastructure.
When to Use
- Creating S3 buckets with custom configurations
- Implementing bucket policies for access control
- Configuring S3 versioning for data protection
- Setting up lifecycle rules for data management
- Creating Outputs for cross-stack references
- Using Parameters with AWS-specific types
- Organizing templates with Mappings and Conditions
Overview
S3 bucket configurations, policies, versioning, lifecycle rules, and CloudFormation template structure for production-ready infrastructure.
Instructions
- Define Bucket Resources: Create
AWS::S3::Bucketwith versioning, encryption, PublicAccessBlock - Configure Bucket Policy: Set up IAM policies for access control
- Set Up Lifecycle Rules: Define transitions and expiration policies
- Configure CORS: Allow cross-origin requests if needed
- Add Outputs: Export bucket names/ARNs for cross-stack references
Validate before deploy:
aws cloudformation validate-template --template-body file://template.yaml
Deploy with rollback on failure:
aws cloudformation deploy \
--template-file template.yaml \
--stack-name my-s3-stack \
--capabilities CAPABILITY_IAM
If deployment fails, CloudFormation automatically rolls back. Check failures with:
aws cloudformation describe-stack-events --stack-name my-s3-stack
Quick Reference
| Resource Type | Purpose |
|---|---|
AWS::S3::Bucket |
Create S3 bucket |
AWS::S3::BucketPolicy |
Set bucket-level policies |
AWS::S3::BucketReplication |
Cross-region replication |
| Parameters | Input values for customization |
| Mappings | Static configuration tables |
| Conditions | Conditional resource creation |
| Outputs | Return values for cross-stack references |
Examples
Basic S3 Bucket
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.
- 9d ago First seen · 230 lines · 50 tokens per session scan A 3866a5adf45a
aws-cloudformation-s3 is a skill published in the GitHub repository giuseppe-trisciuoglio/developer-kit (343 stars, last pushed 21d ago), licensed MIT. It adds 50 tokens to every session and 1,645 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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