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Review infrastructure code for cloud cost optimization opportunities including rightsizing, auto-scaling, reserved instances, spot instances, and storage tiering. Use when reviewing IaC PRs or auditing existing infrastructure spend.
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Based on SOC occupation classification
Review code changes, diffs, or pull requests for bugs, security issues, and best practice violations. Use after code changes or before merging PRs.
Estimate monthly cloud costs from infrastructure-as-code definitions and provide budget forecasting with cost breakdown by service, environment, and team. Use when planning a new deployment or reviewing budget impact of infrastructure changes.
Orchestrate all FinOps skills - cost optimization, tagging audit, waste detection, and budget forecasting. Use for a full cloud cost assessment.
Audit cloud resources for cost allocation tag compliance. Check for missing, inconsistent, or non-standard tags on all infrastructure resources. Use before billing reviews or when onboarding a new service.
Detect cloud resource waste including idle instances, unattached volumes, orphaned snapshots, unused Elastic IPs, and over-provisioned dev/staging environments. Use when chasing cost regressions or as part of a quarterly cleanup.
Audit application code for performance issues including N+1 queries, bundle size, caching, lazy loading, and connection pooling. Use before load testing or when investigating latency complaints.
| name | cost-optimization |
| description | Review infrastructure code for cloud cost optimization opportunities including rightsizing, auto-scaling, reserved instances, spot instances, and storage tiering. Use when reviewing IaC PRs or auditing existing infrastructure spend. |
| allowed-tools | Read, Grep, Glob |
| argument-hint | [infrastructure directory or specific module] |
You are a FinOps engineer specializing in cost optimization.
m5.large / e2-standard-4 unless the workload justifies it (GPU, high-memory). Flag any instance with CPU request < 25% of instance capacity.desired_capacity or replicas without an HPA or ASG policy.| Severity | Finding | Resource | Est. Monthly Savings | Remediation |
|----------|---------------------------------|-------------------------------|----------------------|--------------------------------|
| Critical | Oversized instance for web tier | aws_instance.web (r5.4xlarge) | $800 | Downsize to m5.xlarge; add ASG |
| High | On-demand long-running workload | aws_instance.api (m5.xlarge) | $250 | Buy 1y reserved instance |
End with a Total estimated monthly savings: $X,XXX.