MCP 服务器

AWS Cost Saver

Enables scanning AWS accounts for cost optimization opportunities by reading resource configurations and pricing data, without making any modifications.

README

AWS Cost Saver

Find what's wasting money in your AWS account.

You: "Scan my AWS for cost savings"
Claude: Found 8 issues. Potential savings: $340/month

Installation

The plugin ships with both a .claude-plugin/plugin.json (Claude Code) and a .codex-plugin/plugin.json (Codex) manifest, so the same source tree installs cleanly into either agent.

Claude Code

/plugin marketplace add prajapatimehul/claude-aws-cost-saver
/plugin install aws-cost-saver@aws-cost-saver-marketplace

Or interactively: /plugin → Marketplaces → Add Marketplace → prajapatimehul/claude-aws-cost-saver.

Codex

codex plugin marketplace add prajapatimehul/claude-aws-cost-saver

Then launch Codex and run /plugins to browse and install aws-cost-saver.

Other agents (MCP only)

Any agent that supports MCP can wire the AWS API server directly using plugins/aws-cost-saver/.mcp.json as a template. Skills live under plugins/aws-cost-saver/skills/ and can be loaded as plain Markdown.

Quick Start

/aws-cost-saver:scan

Or just ask: Scan my AWS account for cost savings

Requirements: AWS credentials configured (aws configure or SSO), uv installed.

This tool only reads data — it never modifies or deletes anything. A PreToolUse hook blocks any MCP call containing write verbs (delete, terminate, stop, create-, modify, …).

Features

163 checks across EC2, RDS, S3, Lambda, ECS, EKS, Aurora, SageMaker, and 30+ services
Parallel scanning - 11 domain agents run simultaneously
Confidence scoring - filters false positives
Real pricing - uses AWS Cost Explorer
Markdown reports - clean, actionable output

What's included

Commands (slash)

Command	Description
`/aws-cost-saver:scan`	Full cost optimization scan across 11 domains

Skills (auto-loaded)

Skill	Description
`reviewing-findings`	Confidence-scored review; filters false positives
`validating-aws-pricing`	Mandatory Pricing-API/verified-table sanity check before reporting

Subagent

aws-cost-saver:aws-cost-saver — domain-scoped scanner. Invoke 11 in parallel (one per domain) for a full account audit.

MCP server

The plugin pre-wires the AWS API MCP server (mcp__awslabs-aws-api__call_aws) in .mcp.json, launched via uvx from scripts/start-mcp.sh. A PreToolUse hook in hooks.json blocks any write/mutation command, keeping every scan read-only.

CLI

The repository also ships a standalone Python CLI (main.py) usable without a coding agent:

python main.py checks                       # list all 173 checks
python main.py check EC2-001                # detail for one check
python main.py scan-info                    # show the AWS CLI commands a scan runs
python main.py spend-hotspots --profile X   # rank scan order by real spend (Cost Explorer)
python main.py report --findings findings.json

Demo

Results

Scan results - findings and savings

Before & After

60% cost reduction - $105/day to $42/day Real AWS account: $105/day → $42/day after running the scanner

How it works

Step 1: Choose compliance requirements

Scan step 1 - Compliance selection

Step 2: Parallel agents scan your account

Scan step 2 - Parallel domain scanning

Domains & Checks

Domain	Checks	Key Areas
Compute	25	EC2 idle/over-provisioned, EBS, GP2→GP3
Storage	22	S3 lifecycle, CloudWatch Logs, snapshots
Database	15	RDS idle/over-provisioned, RI coverage
Networking	15	Unused EIPs, NAT, VPC endpoints
Serverless	10	Lambda memory, unused functions
Reservations	10	RI/Savings Plans coverage
Containers	15	ECS/EKS idle, Fargate, Spot
Advanced DBs	18	Aurora, DocumentDB, Neptune, Redshift
Analytics	15	SageMaker, EMR, OpenSearch
Data Pipelines	12	Kinesis, MSK, Glue
Storage Advanced	6	FSx, AWS Backup