Aws Calculator

npm version License: MIT

MCP server for AWS Pricing Calculator. Create cost estimates through natural language, get shareable links, retrieve actual AWS-calculated costs.

• 436 services, 72 regions
• Real pricing via headless Chrome (not approximations)
• Savings Plans, Reserved Instances, all pricing models
• No AWS credentials required

Install

Add to your MCP client config:

{
  "mcpServers": {
    "aws-calculator": {
      "command": "npx",
      "args": ["-y", "aws-calculator-mcp@latest"]
    }
  }
}

Client	Config file
Kiro	~/.kiro/settings/mcp.json
Claude Desktop (macOS)	~/Library/Application Support/Claude/claude_desktop_config.json
Claude Desktop (Windows)	%APPDATA%\Claude\claude_desktop_config.json
Cursor	.cursor/mcp.json
VS Code	.vscode/mcp.json

Requires Node.js ≥ 18. Chrome optional (only for cost retrieval).

What it does

You ask your AI assistant to estimate AWS costs. The MCP handles the rest:

1. Searches the AWS service catalog
2. Looks up valid configuration fields
3. Builds the estimate incrementally
4. Exports to calculator.aws (shareable link)
5. Opens the link in headless Chrome to get actual calculated costs

The pricing is identical to calculator.aws because it is calculator.aws doing the math.

Tools

Tool	Purpose
search_services	Find services by keyword
get_service_fields	Get valid config fields for a service
create_estimate	Start a new estimate
add_service	Add configured services
update_service	Modify a service in-place
export_estimate	Get a shareable calculator.aws URL
refresh_estimate	Get actual costs via headless Chrome
generate_report	Per-service cost breakdown (CSV/Markdown)
import_estimate	Download an existing estimate

Example

"Estimate a production stack in us-west-2: 2x c5.xlarge EC2 with Savings Plan, Lambda at 20M requests, S3 500GB, CloudFront 1TB"

→ Returns a calculator.aws link + $333.92/mo breakdown by service.

How it works

Your prompt → Agent configures services → MCP packages payload → calculator.aws saves it
                                                                → Chrome opens it → scrapes real costs

No local price calculations. No hardcoded rates. The AWS calculator frontend computes everything.

Requirements

• Node.js ≥ 18
• Chrome (optional) — for refresh_estimate and generate_report. Install with npx puppeteer browsers install chrome or use system Chrome.

License

MIT