Agent-Skills.md

Agent Skills: Optimizing Cloud Costs

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UncategorizedID: jeremylongshore/claude-code-plugins-plus-skills/optimizing-cloud-costs

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jeremylongshore/claude-code-plugins-plus-skills
jeremylongshoreLicense: NOASSERTION
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pnpm dlx add-skill https://github.com/jeremylongshore/claude-code-plugins-plus-skills/tree/HEAD/plugins/devops/cloud-cost-optimizer/skills/optimizing-cloud-costs

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plugins/devops/cloud-cost-optimizer/skills/optimizing-cloud-costs/SKILL.md

Skill Metadata

Name
optimizing-cloud-costs
Description
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Optimizing Cloud Costs

Overview

Analyze cloud spending across AWS, GCP, and Azure to identify waste, recommend rightsizing, and generate cost-saving configurations. Covers reserved instances, spot/preemptible workloads, storage tiering, idle resource cleanup, and budget alerting using cloud-native cost management APIs.

Prerequisites

  • Cloud provider CLI authenticated with billing/cost-explorer read access
  • AWS: ce:GetCostAndUsage, ec2:DescribeInstances, cloudwatch:GetMetricData permissions
  • GCP: Billing Account Viewer and Compute Viewer roles
  • Azure: Cost Management Reader role
  • Access to current infrastructure-as-code (Terraform, CloudFormation) for rightsizing changes
  • At least 30 days of billing data for meaningful analysis

Instructions

  1. Pull current cost data using cloud cost APIs (aws ce get-cost-and-usage, gcloud billing budgets list)
  2. Identify the top 10 cost drivers by service, region, and resource tag
  3. Detect idle resources: instances with < 5% average CPU over 14 days, unattached EBS volumes, unused Elastic IPs, orphaned snapshots
  4. Recommend rightsizing: compare instance utilization against available instance types and suggest downsizing
  5. Evaluate reserved instance or savings plan coverage against on-demand spend; recommend commitments for steady-state workloads
  6. Identify spot/preemptible candidates: stateless, fault-tolerant workloads (batch jobs, CI runners, dev environments)
  7. Review storage costs: recommend S3 Intelligent-Tiering, lifecycle policies for infrequent access, or Glacier for archives
  8. Generate Terraform/IaC changes to implement approved optimizations
  9. Set up budget alerts with thresholds at 50%, 80%, and 100% of monthly budget
  10. Create a cost optimization report summarizing findings, savings estimates, and implementation priority

Output

  • Cost analysis report with per-service breakdown and savings recommendations
  • Terraform/CloudFormation changes for rightsizing and reserved instance purchases
  • S3 lifecycle policy configurations for storage tiering
  • Budget alert configurations (CloudWatch, GCP Budget, Azure Cost Alerts)
  • Cleanup scripts for idle resources (with dry-run mode for safety)

Error Handling

| Error | Cause | Solution | |-------|-------|---------| | Access Denied on Cost Explorer API | Missing ce:* IAM permissions | Attach the AWSBillingReadOnlyAccess managed policy to the IAM user/role | | No billing data available | Account is too new or cost export not enabled | Enable Cost Explorer (takes 24h to populate) or set up CUR (Cost and Usage Report) | | Rightsizing recommendation breaks workload | Instance too small for peak load | Base sizing on P95 utilization, not average; keep a 20% headroom buffer | | Spot instance terminated mid-job | Spot capacity reclaimed by provider | Use spot fleet with diversified instance types and implement checkpointing | | Budget alert not firing | SNS topic or notification channel misconfigured | Verify SNS subscription is confirmed and test with a low threshold |

Examples

  • "Analyze AWS costs for the last 3 months, identify the top waste areas, and generate a cleanup script for unattached EBS volumes and unused Elastic IPs."
  • "Compare on-demand EC2 spend against Savings Plans pricing and recommend 1-year commitments for steady-state workloads."
  • "Create S3 lifecycle policies to move objects older than 90 days to Glacier and delete after 365 days across all buckets tagged env:production."

Resources

  • AWS Cost Explorer: https://docs.aws.amazon.com/cost-management/latest/userguide/ce-what-is.html
  • GCP Cost Management: https://cloud.google.com/billing/docs/how-to/budgets
  • Azure Cost Management: https://learn.microsoft.com/en-us/azure/cost-management-billing/
  • FinOps Foundation: https://www.finops.org/framework/