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 agentmods add skills/viktorbezdek/skillstack/cloud-infrastructurenpx skills add viktorbezdek/skillstack --skill cloud-infrastructuregit clone --depth 1 https://github.com/viktorbezdek/skillstackWhat 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 | $0.00163 | $0.00549 |
| Opus 5 | $0.00081 | $0.00275 |
| Sonnet 5 | $0.00033 | $0.00110 |
| Haiku 4.5 | $0.00016 | $0.00055 |
Grade A, and why
cloud-infrastructure 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 2d 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.
What it actually says
cloud-infrastructure
Infrastructure-as-code with Terraform and AWS CDK, cloud architecture patterns, cost optimisation, and multi-region deployment design.
When to use
- Write Terraform to provision an RDS PostgreSQL instance with a read replica
- Design a multi-AZ VPC with public and private subnets for a 3-tier app
- Convert our Terraform S3 + CloudFront setup to AWS CDK TypeScript
- Our AWS bill doubled last month — what should we look at?
- Design a disaster-recovery architecture with RPO < 1 hour across two regions
- Write a Terraform module for an EKS cluster with managed node groups
- Set up an IAM role with least-privilege access for a Lambda reading from S3
- Architect a serverless API: API Gateway + Lambda + DynamoDB
When NOT to use
- Write a Kubernetes Deployment and Service for our FastAPI app — K8s application manifests — not infrastructure provisioning
- Set up a GitHub Actions workflow for blue-green deploys — CI/CD pipeline — separate concern
- Debug why our Docker container crashes on startup — App-layer debugging — not infra
- Write the FastAPI code for our API endpoint — Application code — not infrastructure
Anti-patterns
Symptom
Invoking this skill for tasks outside its scope — e.g., infrastructure concerns when the request is about application code, or vice versa.
Problem
Scope mismatch wastes context and produces advice tuned for the wrong domain. A database schema skill answering a connection-pooling question gives schema advice when the real problem is operational configuration.
Solution
Read the NOT for clauses carefully. If the request matches an exclusion, identify the correct skill (check SkillStack for the right domain) rather than stretching this skill to cover adjacent ground.
What ships with it
2 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.
- 2d ago First seen · 40 lines · 163 tokens per session scan A e0fa61e42c59
cloud-infrastructure is a skill published in the GitHub repository viktorbezdek/skillstack (11 stars, last pushed 2mo ago), licensed MIT. It adds 163 tokens to every session and 549 once invoked, about $0.0008 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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