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-ec2git 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-ec2)<a href="https://agentmods.dev/skills/giuseppe-trisciuoglio/developer-kit/aws-cloudformation-ec2"><img src="https://agentmods.dev/badge/skills/giuseppe-trisciuoglio/developer-kit/aws-cloudformation-ec2.svg" alt="Measured on agentmods" 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 | $0.00078 | $0.02422 |
| Opus 5 | $0.00039 | $0.01211 |
| Sonnet 5 | $0.00016 | $0.00484 |
| Haiku 4.5 | $0.00008 | $0.00242 |
Grade A, and why
aws-cloudformation-ec2 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 8d 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 — 307 lines — stays where its author put it; the contents beside it link to each section on GitHub.
AWS CloudFormation EC2 Infrastructure
Overview
Create production-ready EC2 infrastructure using AWS CloudFormation templates. Covers EC2 instances (On-Demand and SPOT), Security Groups, IAM roles, Application Load Balancers (ALB), template structure, parameters, outputs, and cross-stack references.
When to Use
- Creating EC2 instances (On-Demand or SPOT) with Security Groups and IAM roles
- Setting up Application Load Balancers with target groups
- Implementing template Parameters, Mappings, Conditions, and cross-stack references
Instructions
Step 1 — Define Template Parameters
Use AWS-specific parameter types for validation and console dropdowns.
Parameters:
LatestAmiId:
Type: AWS::SSM::Parameter::Value<AWS::EC2::Image::Id>
Default: /aws/service/ami-amazon-linux-latest/amzn2-ami-hvm-x86_64-gp2
InstanceType:
Type: AWS::EC2::InstanceType
Default: t3.micro
AllowedValues: [t3.micro, t3.small, t3.medium]
KeyName:
Type: AWS::EC2::KeyPair::KeyName
See template-structure.md for advanced parameter patterns, mappings, conditions, and cross-stack references.
Step 2 — Create Security Group
Define ingress/egress rules for network access.
InstanceSecurityGroup:
Type: AWS::EC2::SecurityGroup
Properties:
GroupDescription: Security group for EC2 instance
VpcId: !Ref VpcId
SecurityGroupIngress:
- IpProtocol: tcp
FromPort: 80
ToPort: 80
CidrIp: 0.0.0.0/0
- IpProtocol: tcp
FromPort: 22
ToPort: 22
CidrIp: 10.0.0.0/16
See security-iam.md for advanced security group patterns, self-references, and IAM roles.
Step 3 — Configure IAM Role
Define instance profile with least privilege permissions.
Ec2Role:
Type: AWS::IAM::Role
Properties:
AssumeRolePolicyDocument:
Version: "2012-10-17"
Statement:
- Effect: Allow
Principal:
Service: ec2.amazonaws.com
Action: sts:AssumeRole
ManagedPolicyArns:
- arn:aws:iam::aws:policy/AmazonSSMManagedInstanceCore
Ec2InstanceProfile:
Type: AWS::IAM::InstanceProfile
Properties:
Roles: [!Ref Ec2Role]
What ships with it
8 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.
- 8d ago First seen · 307 lines · 78 tokens per session scan A f9dc198a7d41
aws-cloudformation-ec2 is a skill published in the GitHub repository giuseppe-trisciuoglio/developer-kit (342 stars, last pushed 20d ago), licensed MIT. It adds 78 tokens to every session and 2,422 once invoked, about $0.0004 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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