Add AWS cost optimization skills for Kiro CLI

- aws-cost-optimizer: Cost analysis and recommendations - aws-cost-cleanup: Automated resource cleanup - Includes AWS CLI commands, Python scripts, and Lambda functions - Kiro CLI integration examples - Addresses cost optimization and FinOps use cases
2026-02-21 10:04:58 -05:00
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--- a/skills/infrastructure/aws-cost-cleanup/SKILL.md
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+---
+name: aws-cost-cleanup
+description: Automated cleanup of unused AWS resources to reduce costs
+risk: medium
+source: community
+category: infrastructure
+tags: [aws, automation, cost-reduction, cleanup, kiro-cli]
+---
+
+# AWS Cost Cleanup
+
+Automate the identification and removal of unused AWS resources to eliminate waste.
+
+## Automated Cleanup Targets
+
+**Storage**
+- Unattached EBS volumes
+- Old EBS snapshots (>90 days)
+- Incomplete multipart S3 uploads
+- Old S3 versions in versioned buckets
+
+**Compute**
+- Stopped EC2 instances (>30 days)
+- Unused AMIs and associated snapshots
+- Unused Elastic IPs
+
+**Networking**
+- Unused Elastic Load Balancers
+- Unused NAT Gateways
+- Orphaned ENIs
+
+## Cleanup Scripts
+
+### Safe Cleanup (Dry-Run First)
+
+```bash
+#!/bin/bash
+# cleanup-unused-ebs.sh
+
+echo "Finding unattached EBS volumes..."
+VOLUMES=$(aws ec2 describe-volumes \
+  --filters Name=status,Values=available \
+  --query 'Volumes[*].VolumeId' \
+  --output text)
+
+for vol in $VOLUMES; do
+  echo "Would delete: $vol"
+  # Uncomment to actually delete:
+  # aws ec2 delete-volume --volume-id $vol
+done
+```
+
+```bash
+#!/bin/bash
+# cleanup-old-snapshots.sh
+
+CUTOFF_DATE=$(date -d '90 days ago' --iso-8601)
+
+aws ec2 describe-snapshots --owner-ids self \
+  --query "Snapshots[?StartTime<='$CUTOFF_DATE'].[SnapshotId,StartTime,VolumeSize]" \
+  --output text | while read snap_id start_time size; do
+  
+  echo "Snapshot: $snap_id (Created: $start_time, Size: ${size}GB)"
+  # Uncomment to delete:
+  # aws ec2 delete-snapshot --snapshot-id $snap_id
+done
+```
+
+```bash
+#!/bin/bash
+# release-unused-eips.sh
+
+aws ec2 describe-addresses \
+  --query 'Addresses[?AssociationId==null].[AllocationId,PublicIp]' \
+  --output text | while read alloc_id public_ip; do
+  
+  echo "Would release: $public_ip ($alloc_id)"
+  # Uncomment to release:
+  # aws ec2 release-address --allocation-id $alloc_id
+done
+```
+
+### S3 Lifecycle Automation
+
+```bash
+# Apply lifecycle policy to transition old objects to cheaper storage
+cat > lifecycle-policy.json <<EOF
+{
+  "Rules": [
+    {
+      "Id": "Archive old objects",
+      "Status": "Enabled",
+      "Transitions": [
+        {
+          "Days": 90,
+          "StorageClass": "STANDARD_IA"
+        },
+        {
+          "Days": 180,
+          "StorageClass": "GLACIER"
+        }
+      ],
+      "NoncurrentVersionExpiration": {
+        "NoncurrentDays": 30
+      },
+      "AbortIncompleteMultipartUpload": {
+        "DaysAfterInitiation": 7
+      }
+    }
+  ]
+}
+EOF
+
+aws s3api put-bucket-lifecycle-configuration \
+  --bucket my-bucket \
+  --lifecycle-configuration file://lifecycle-policy.json
+```
+
+## Cost Impact Calculator
+
+```python
+#!/usr/bin/env python3
+# calculate-savings.py
+
+import boto3
+from datetime import datetime, timedelta
+
+ec2 = boto3.client('ec2')
+
+# Calculate EBS volume savings
+volumes = ec2.describe_volumes(
+    Filters=[{'Name': 'status', 'Values': ['available']}]
+)
+
+total_size = sum(v['Size'] for v in volumes['Volumes'])
+monthly_cost = total_size * 0.10  # $0.10/GB-month for gp3
+
+print(f"Unattached EBS Volumes: {len(volumes['Volumes'])}")
+print(f"Total Size: {total_size} GB")
+print(f"Monthly Savings: ${monthly_cost:.2f}")
+
+# Calculate Elastic IP savings
+addresses = ec2.describe_addresses()
+unused = [a for a in addresses['Addresses'] if 'AssociationId' not in a]
+
+eip_cost = len(unused) * 3.65  # $0.005/hour * 730 hours
+print(f"\nUnused Elastic IPs: {len(unused)}")
+print(f"Monthly Savings: ${eip_cost:.2f}")
+
+print(f"\nTotal Monthly Savings: ${monthly_cost + eip_cost:.2f}")
+print(f"Annual Savings: ${(monthly_cost + eip_cost) * 12:.2f}")
+```
+
+## Automated Cleanup Lambda
+
+```python
+import boto3
+from datetime import datetime, timedelta
+
+def lambda_handler(event, context):
+    ec2 = boto3.client('ec2')
+    
+    # Delete unattached volumes older than 7 days
+    volumes = ec2.describe_volumes(
+        Filters=[{'Name': 'status', 'Values': ['available']}]
+    )
+    
+    cutoff = datetime.now() - timedelta(days=7)
+    deleted = 0
+    
+    for vol in volumes['Volumes']:
+        create_time = vol['CreateTime'].replace(tzinfo=None)
+        if create_time < cutoff:
+            try:
+                ec2.delete_volume(VolumeId=vol['VolumeId'])
+                deleted += 1
+                print(f"Deleted volume: {vol['VolumeId']}")
+            except Exception as e:
+                print(f"Error deleting {vol['VolumeId']}: {e}")
+    
+    return {
+        'statusCode': 200,
+        'body': f'Deleted {deleted} volumes'
+    }
+```
+
+## Cleanup Workflow
+
+1. **Discovery Phase** (Read-only)
+   - Run all describe commands
+   - Generate cost impact report
+   - Review with team
+
+2. **Validation Phase**
+   - Verify resources are truly unused
+   - Check for dependencies
+   - Notify resource owners
+
+3. **Execution Phase** (Dry-run first)
+   - Run cleanup scripts with dry-run
+   - Review proposed changes
+   - Execute actual cleanup
+
+4. **Verification Phase**
+   - Confirm deletions
+   - Monitor for issues
+   - Document savings
+
+## Safety Checklist
+
+- [ ] Run in dry-run mode first
+- [ ] Verify resources have no dependencies
+- [ ] Check resource tags for ownership
+- [ ] Notify stakeholders before deletion
+- [ ] Create snapshots of critical data
+- [ ] Test in non-production first
+- [ ] Have rollback plan ready
+- [ ] Document all deletions
+
+## Example Prompts
+
+**Discovery**
+- "Find all unused resources and calculate potential savings"
+- "Generate a cleanup report for my AWS account"
+- "What resources can I safely delete?"
+
+**Execution**
+- "Create a script to cleanup unattached EBS volumes"
+- "Delete all snapshots older than 90 days"
+- "Release unused Elastic IPs"
+
+**Automation**
+- "Set up automated cleanup for old snapshots"
+- "Create a Lambda function for weekly cleanup"
+- "Schedule monthly resource cleanup"
+
+## Integration with AWS Organizations
+
+```bash
+# Run cleanup across multiple accounts
+for account in $(aws organizations list-accounts \
+  --query 'Accounts[*].Id' --output text); do
+  
+  echo "Checking account: $account"
+  aws ec2 describe-volumes \
+    --filters Name=status,Values=available \
+    --profile account-$account
+done
+```
+
+## Monitoring and Alerts
+
+```bash
+# Create CloudWatch alarm for cost anomalies
+aws cloudwatch put-metric-alarm \
+  --alarm-name high-cost-alert \
+  --alarm-description "Alert when daily cost exceeds threshold" \
+  --metric-name EstimatedCharges \
+  --namespace AWS/Billing \
+  --statistic Maximum \
+  --period 86400 \
+  --evaluation-periods 1 \
+  --threshold 100 \
+  --comparison-operator GreaterThanThreshold
+```
+
+## Best Practices
+
+- Schedule cleanup during maintenance windows
+- Always create final snapshots before deletion
+- Use resource tags to identify cleanup candidates
+- Implement approval workflow for production
+- Log all cleanup actions for audit
+- Set up cost anomaly detection
+- Review cleanup results weekly
+
+## Risk Mitigation
+
+**Medium Risk Actions:**
+- Deleting unattached volumes (ensure no planned reattachment)
+- Removing old snapshots (verify no compliance requirements)
+- Releasing Elastic IPs (check DNS records)
+
+**Always:**
+- Maintain 30-day backup retention
+- Use AWS Backup for critical resources
+- Test restore procedures
+- Document cleanup decisions
+
+## Kiro CLI Integration
+
+```bash
+# Analyze and cleanup in one command
+kiro-cli chat "Use aws-cost-cleanup to find and remove unused resources"
+
+# Generate cleanup script
+kiro-cli chat "Create a safe cleanup script for my AWS account"
+
+# Schedule automated cleanup
+kiro-cli chat "Set up weekly automated cleanup using aws-cost-cleanup"
+```
+
+## Additional Resources
+
+- [AWS Resource Cleanup Best Practices](https://aws.amazon.com/blogs/mt/automate-resource-cleanup/)
+- [AWS Systems Manager Automation](https://docs.aws.amazon.com/systems-manager/latest/userguide/systems-manager-automation.html)
+- [AWS Config Rules for Compliance](https://docs.aws.amazon.com/config/latest/developerguide/managed-rules-by-aws-config.html)
--- a/skills/infrastructure/aws-cost-optimizer/SKILL.md
+++ b/skills/infrastructure/aws-cost-optimizer/SKILL.md
@@ -0,0 +1,190 @@
+---
+name: aws-cost-optimizer
+description: Comprehensive AWS cost analysis and optimization recommendations using AWS CLI and Cost Explorer
+risk: low
+source: community
+category: infrastructure
+tags: [aws, cost-optimization, finops, cloud-economics, kiro-cli]
+---
+
+# AWS Cost Optimizer
+
+Analyze AWS spending patterns, identify waste, and provide actionable cost reduction strategies.
+
+## Core Capabilities
+
+**Cost Analysis**
+- Parse AWS Cost Explorer data for trends and anomalies
+- Break down costs by service, region, and resource tags
+- Identify month-over-month spending increases
+
+**Resource Optimization**
+- Detect idle EC2 instances (low CPU utilization)
+- Find unattached EBS volumes and old snapshots
+- Identify unused Elastic IPs
+- Locate underutilized RDS instances
+- Find old S3 objects eligible for lifecycle policies
+
+**Savings Recommendations**
+- Suggest Reserved Instance/Savings Plans opportunities
+- Recommend instance rightsizing based on CloudWatch metrics
+- Identify resources in expensive regions
+- Calculate potential savings with specific actions
+
+## AWS CLI Commands
+
+### Get Cost and Usage
+```bash
+# Last 30 days cost by service
+aws ce get-cost-and-usage \
+  --time-period Start=$(date -d '30 days ago' +%Y-%m-%d),End=$(date +%Y-%m-%d) \
+  --granularity MONTHLY \
+  --metrics BlendedCost \
+  --group-by Type=DIMENSION,Key=SERVICE
+
+# Daily costs for current month
+aws ce get-cost-and-usage \
+  --time-period Start=$(date +%Y-%m-01),End=$(date +%Y-%m-%d) \
+  --granularity DAILY \
+  --metrics UnblendedCost
+```
+
+### Find Unused Resources
+```bash
+# Unattached EBS volumes
+aws ec2 describe-volumes \
+  --filters Name=status,Values=available \
+  --query 'Volumes[*].[VolumeId,Size,VolumeType,CreateTime]' \
+  --output table
+
+# Unused Elastic IPs
+aws ec2 describe-addresses \
+  --query 'Addresses[?AssociationId==null].[PublicIp,AllocationId]' \
+  --output table
+
+# Idle EC2 instances (requires CloudWatch)
+aws cloudwatch get-metric-statistics \
+  --namespace AWS/EC2 \
+  --metric-name CPUUtilization \
+  --dimensions Name=InstanceId,Value=i-xxxxx \
+  --start-time $(date -u -d '7 days ago' +%Y-%m-%dT%H:%M:%S) \
+  --end-time $(date -u +%Y-%m-%dT%H:%M:%S) \
+  --period 86400 \
+  --statistics Average
+
+# Old EBS snapshots (>90 days)
+aws ec2 describe-snapshots \
+  --owner-ids self \
+  --query 'Snapshots[?StartTime<=`'$(date -d '90 days ago' --iso-8601)'`].[SnapshotId,StartTime,VolumeSize]' \
+  --output table
+```
+
+### Rightsizing Analysis
+```bash
+# List EC2 instances with their types
+aws ec2 describe-instances \
+  --query 'Reservations[*].Instances[*].[InstanceId,InstanceType,State.Name,Tags[?Key==`Name`].Value|[0]]' \
+  --output table
+
+# Get RDS instance utilization
+aws cloudwatch get-metric-statistics \
+  --namespace AWS/RDS \
+  --metric-name CPUUtilization \
+  --dimensions Name=DBInstanceIdentifier,Value=mydb \
+  --start-time $(date -u -d '30 days ago' +%Y-%m-%dT%H:%M:%S) \
+  --end-time $(date -u +%Y-%m-%dT%H:%M:%S) \
+  --period 86400 \
+  --statistics Average,Maximum
+```
+
+## Optimization Workflow
+
+1. **Baseline Assessment**
+   - Pull 3-6 months of cost data
+   - Identify top 5 spending services
+   - Calculate growth rate
+
+2. **Quick Wins**
+   - Delete unattached EBS volumes
+   - Release unused Elastic IPs
+   - Stop/terminate idle EC2 instances
+   - Delete old snapshots
+
+3. **Strategic Optimization**
+   - Analyze Reserved Instance coverage
+   - Review instance types vs. workload
+   - Implement S3 lifecycle policies
+   - Consider Spot instances for non-critical workloads
+
+4. **Ongoing Monitoring**
+   - Set up AWS Budgets with alerts
+   - Enable Cost Anomaly Detection
+   - Tag resources for cost allocation
+   - Monthly cost review meetings
+
+## Cost Optimization Checklist
+
+- [ ] Enable AWS Cost Explorer
+- [ ] Set up cost allocation tags
+- [ ] Create AWS Budget with alerts
+- [ ] Review and delete unused resources
+- [ ] Analyze Reserved Instance opportunities
+- [ ] Implement S3 Intelligent-Tiering
+- [ ] Review data transfer costs
+- [ ] Optimize Lambda memory allocation
+- [ ] Use CloudWatch Logs retention policies
+- [ ] Consider multi-region cost differences
+
+## Example Prompts
+
+**Analysis**
+- "Show me AWS costs for the last 3 months broken down by service"
+- "What are my top 10 most expensive resources?"
+- "Compare this month's spending to last month"
+
+**Optimization**
+- "Find all unattached EBS volumes and calculate savings"
+- "Identify EC2 instances with <5% CPU utilization"
+- "Suggest Reserved Instance purchases based on usage"
+- "Calculate savings from deleting snapshots older than 90 days"
+
+**Implementation**
+- "Create a script to delete unattached volumes"
+- "Set up a budget alert for $1000/month"
+- "Generate a cost optimization report for leadership"
+
+## Best Practices
+
+- Always test in non-production first
+- Verify resources are truly unused before deletion
+- Document all cost optimization actions
+- Calculate ROI for optimization efforts
+- Automate recurring optimization tasks
+- Use AWS Trusted Advisor recommendations
+- Enable AWS Cost Anomaly Detection
+
+## Integration with Kiro CLI
+
+This skill works seamlessly with Kiro CLI's AWS integration:
+
+```bash
+# Use Kiro to analyze costs
+kiro-cli chat "Use aws-cost-optimizer to analyze my spending"
+
+# Generate optimization report
+kiro-cli chat "Create a cost optimization plan using aws-cost-optimizer"
+```
+
+## Safety Notes
+
+- **Risk Level: Low** - Read-only analysis is safe
+- **Deletion Actions: Medium Risk** - Always verify before deleting resources
+- **Production Changes: High Risk** - Test rightsizing in dev/staging first
+- Maintain backups before any deletion
+- Use `--dry-run` flag when available
+
+## Additional Resources
+
+- [AWS Cost Optimization Best Practices](https://aws.amazon.com/pricing/cost-optimization/)
+- [AWS Well-Architected Framework - Cost Optimization](https://docs.aws.amazon.com/wellarchitected/latest/cost-optimization-pillar/welcome.html)
+- [AWS Cost Explorer API](https://docs.aws.amazon.com/cost-management/latest/APIReference/Welcome.html)