Infracost MCP Server

# Terraform Cost Estimation Examples This directory contains sample Terraform configurations for testing Infracost MCP tools. ## Files - `main.tf` - Main infrastructure definition with various AWS resources - `variables.tf` - Variable definitions - `dev.tfvars` - Development environment configuration (smaller, cheaper resources) - `prod.tfvars` - Production environment configuration (larger, more expensive resources) ## Resources Included The configuration includes common AWS resources with different cost profiles: 1. **EC2 Instance** - Compute costs 2. **RDS PostgreSQL** - Database costs (significant cost driver) 3. **S3 Bucket** - Storage costs 4. **Application Load Balancer** - Network costs 5. **NAT Gateway** - High fixed cost ($32/month + data transfer) 6. **ElastiCache Redis** - Caching costs 7. **CloudWatch Log Group** - Logging costs ## Testing Examples ### Basic Cost Breakdown ```bash # Get cost estimate for dev environment infracost breakdown --path . --terraform-var-file dev.tfvars # Get cost estimate for prod environment infracost breakdown --path . --terraform-var-file prod.tfvars ``` ### Compare Environments ```bash # See the cost difference between dev and prod infracost diff --path . --terraform-var-file prod.tfvars --compare-to . --terraform-var-file dev.tfvars ``` ### Using with Claude via MCP Ask Claude: - "What's the monthly cost of the dev environment in examples/terraform?" - "Compare the cost between dev and prod configurations" - "What are the top 3 cost drivers in the prod setup?" - "Generate a cost breakdown and save it as JSON" ## Expected Costs (approximate) ### Dev Environment (~$75-100/month) - EC2 t3.small: ~$15/month - RDS db.t3.micro: ~$15/month - NAT Gateway: ~$32/month - ElastiCache: ~$12/month - ALB: ~$16/month - Other: ~$5/month ### Prod Environment (~$800-900/month) - EC2 t3.xlarge: ~$120/month - RDS db.r6g.xlarge: ~$300/month - NAT Gateway: ~$32/month - ElastiCache (3x r6g.large): ~$240/month - ALB: ~$16/month - Storage (500GB): ~$50/month - Other: ~$20/month ## Notes - Costs are estimates and vary by region and usage - NAT Gateway is a significant fixed cost regardless of size - Database and cache instances are the main cost drivers in prod - Actual costs depend on data transfer, storage usage, and other factors