aws-calculator-mcp 1.3.4

Describe AWS infra in plain English and get an official, shareable AWS Pricing Calculator link with real costs — as an MCP server, CLI, and REST API.

AWS Pricing Calculator — Estimate Generator

Describe your AWS setup in plain English → get an official AWS Pricing Calculator link with real costs already filled in. No AWS account, no logins, no JSON.

$ aws-calc --prompt "2 t3.large EC2 with 50GB, RDS MySQL db.m5.large 100GB, 500GB S3, an ALB"

✅ Monthly cost: $352.13 USD
🔗 https://calculator.aws/#/estimate?id=03fecc46f00312e0f3e868b62365de5758b9621d

Use it from the command line, inside Claude / Cursor / any AI IDE (it's an MCP server), or as a small REST API. One install does all three.

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Install

pipx install aws-calculator-mcp      # recommended
# or:  pip install aws-calculator-mcp

That's all. The first time you make an estimate it downloads a small browser engine once (~150 MB) to read live prices — you don't install anything else.

(On Ubuntu/Debian, if pip says "externally managed", use pipx or add --break-system-packages.)

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3 ways to use it

1) Plain English (easiest)

aws-calc --prompt "1 t4g.medium server with 50GB and daily snapshot, plus a 100GB S3 bucket"

It prints exactly what it understood, then the link:

   Understood from your prompt:
     • ec2 (instances=1, instance_type=t4g.medium, storage_gb=50,
            snapshot_frequency=daily, snapshot_changed_gb=10)
     • s3 (storage_gb=100)
   Monthly cost: $40.83 USD
   🔗 https://calculator.aws/#/estimate?id=1096b9ed939063ec3e4e5ff0b16628c6b2ccc0da

↑ that's a real link from this exact prompt — open it to validate.

• Add --group to organise by category (Compute, Database, Network…).
• Add --region ap-south-1 (Mumbai) etc. Default is us-east-1.
• Typos are okay (lamda, buckit, dynmodb all work).

2) Interactive (it asks you)

aws-calc -i

Estimate name [My Estimate]: Prod
AWS region [us-east-1]: ap-south-1
Group services by category? (y/n) [y]: y
Describe your infrastructure: 2 m5.large EC2, RDS MySQL db.m5.large 100GB, an ALB
→ $417.81/mo 🔗 https://calculator.aws/#/estimate?id=5c6523f2ed925c250ddfa2c90f84a4def7c36858

3) Inside Claude / Cursor / any MCP client

Add this to your MCP config (e.g. Claude Desktop claude_desktop_config.json, or Claude Code / Cursor settings):

{
  "mcpServers": {
    "aws-calculator": { "command": "aws-calc-mcp" }
  }
}

Restart the app, then just chat:

"I'm building a small website with ~10k visitors. Suggest a budget AWS setup and create a pricing link."

The assistant designs the stack and calls the tool — you get the official link back.

Tip: if the tool doesn't show up, the command isn't on PATH. Use the full path instead, e.g. "command": "/home/you/.local/bin/aws-calc-mcp" (find it with which aws-calc-mcp).

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What you can put in an estimate

~50 services. Just name them; sizes/counts are optional (sensible defaults apply):

Type	Examples
Compute	EC2, Lambda, Fargate, EKS, Lightsail
Storage	S3, EBS, EFS, ECR
Database	RDS (MySQL/PostgreSQL/Oracle/SQL Server/MariaDB), Aurora, DynamoDB, Redshift, OpenSearch, ElastiCache
Network	CloudFront, Route 53, API Gateway, ALB/NLB, VPC, NAT Gateway, Transit Gateway, Site-to-Site VPN, Network Firewall, PrivateLink
Security	WAF, GuardDuty, KMS, Cognito, Inspector, Security Hub
Other	CloudWatch, CloudTrail, Config, SQS, SNS, SES, Kinesis, Bedrock, AWS Backup, Disaster Recovery (EDR), CodeBuild

Handy things you can say:

• Instance type: "t4g.medium", "db.m5.large", "cache.r6g.large"
• Storage / transfer: "50GB storage", "1TB data transfer"
• Requests: "2M requests", "10k messages per day"
• Snapshots: "daily snapshot of 20GB" (also weekly / monthly)
• Savings: "reserved 3 year", "savings plan 1 year"
• Auto-scaling / part-time: "runs 5 hours per day"

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Real examples — click to validate

Each prompt below produced a real, live AWS Pricing Calculator link. Open any of them to verify the costs yourself:

1. Vague idea — "a small website with a database and a 100GB bucket" → $148.62/mo https://calculator.aws/#/estimate?id=3bc90edb5879c1c8bda43ad2384ec052b0d69e49

2. Budget blog — "cheapest setup: 1 t4g.small server with 20GB for a personal blog" → $13.86/mo https://calculator.aws/#/estimate?id=b3a7dbb5284a327014f7330d670d6a2c16fa385a

3. Site + daily snapshot — "1 t4g.medium server 50GB with daily snapshot, plus a 100GB S3 bucket" → $40.83/mo https://calculator.aws/#/estimate?id=bff1a75683a9137aca838217b29e2e334db130ad

4. Web app (grouped) — "3 t3.large EC2 with 50GB, RDS MySQL db.m5.large 100GB multi-az, 500GB S3, an ALB, CloudFront 1TB" → $641.24/mo https://calculator.aws/#/estimate?id=8c3cf1097ccee1b08379067d882c064acb889503

5. Serverless API (grouped) — "Lambda with 10M requests, DynamoDB, API Gateway, 200GB S3" → $28.56/mo + $180 upfront https://calculator.aws/#/estimate?id=0dc7dcc6a28c504943f3d18d2ecffd66a8f18ad7

6. Enterprise (grouped) — "4 m5.xlarge EC2, Aurora MySQL db.r6g.large 2 nodes, Redis cache.r6g.large, CloudFront 2TB, WAF, GuardDuty, CloudTrail" → $1,311.13/mo https://calculator.aws/#/estimate?id=ddb66ce8d0a726a1e539dd7e742072717b084744

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Use it with other AI tools

It's a standard MCP server, so any MCP-capable assistant can call it. The config block is the same everywhere — {"command": "aws-calc-mcp"}:

Tool	How to add it
Claude Desktop	Settings → Developer → Edit Config → add the mcpServers block → restart
Claude Code	claude mcp add aws-calculator -- aws-calc-mcp (or a project .mcp.json)
Cursor	Settings → MCP → Add server → command aws-calc-mcp
Windsurf / Continue (VS Code)	add the same mcpServers block to their MCP settings
ChatGPT (Custom GPT)	run aws-calc-api, then import http://your-host:8080/openapi.json as an Action
n8n / Zapier / Make	HTTP request node → POST /v1/estimate with {"prompt": "..."}
LangChain / LlamaIndex / any agent	call the REST endpoint, or shell out to the aws-calc CLI

Once added, just ask the assistant in plain language:

"Design a budget AWS setup for a 10k-user app and create a pricing link."

It picks the services and calls the tool — you get the official link back.

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Optional: run it as a REST API

Only if you want an HTTP endpoint (e.g. for ChatGPT actions or automation):

pip install "aws-calculator-mcp[api]"
aws-calc-api                # http://localhost:8080

curl -X POST http://localhost:8080/v1/estimate -H "Content-Type: application/json" \
  -d '{"prompt": "2 m5.large EC2, RDS MySQL db.m5.large 100GB, 500GB S3", "group": true}'

Docs at /docs. For ChatGPT, import /openapi.json as a Custom GPT Action.

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Good to know

• Costs come from AWS itself — the tool fills the official calculator and reads the real numbers, so they match calculator.aws exactly.
• Friendly errors — unknown service → "did you mean…?"; it also tells you if it skipped a part it didn't understand.
• A few calculator forms may need manual tweaks after opening the link (notably AWS Backup and EC2 standard Reserved — use Savings Plans instead).
• The natural-language reader is a helper; an AI client (Claude/ChatGPT) handles messy descriptions even better.

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Changelog

• 1.3.4 — Cleaner calculator payloads: no empty optional transfer sections, default EC2 boot storage for plain-English prompts, fixed Aurora node parsing, DRS/data-transfer regressions covered by tests.
• 1.3.0 — EBS snapshots (daily/weekly/monthly); simpler README + real example links; AI-tool integration guide.
• 1.2.x — plain-English prompts, interactive mode, auto-grouping, self-contained baking (auto-installs the browser engine), multi-service phrases, friendly errors, typo tolerance.
• 1.0.x — initial release: MCP server + CLI + REST API, ~50 AWS services, real baked-in costs.

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Issues & ideas: github.com/vireshsolanki/aws-calculator-mcp · MIT licensed · not affiliated with AWS (uses the public calculator.aws endpoints).