spotinfo

Overview

spotinfo is a comprehensive CLI tool and MCP server that provides detailed information about AWS EC2 Spot Instances. It offers real-time placement scores (1-10 scale), pricing data, and interruption frequency analysis. The tool features advanced filtering capabilities with regex-powered instance type matching, multi-dimensional filtering by vCPU, memory, price, regions, and placement scores. It supports multiple output formats including visual tables, JSON, and CSV, with graceful fallbacks when AWS APIs are unavailable. The MCP integration allows AI assistants to directly query AWS Spot Instance data through natural language.

Try asking AI

After installing, here are 5 things you can ask your AI assistant:

• query_spot_instances

  Query AWS EC2 Spot instances with filtering by type, region, price, and placement scores

  Try:Find cheapest t3 instances with placement score >7Try:Compare m5.large prices across US regionsTry:Show high-reliability instances with 4 vCPU and 16GB memory under $0.30
• get_placement_scores

  Get real-time placement scores (1-10 scale) for spot instances

  Try:What's the placement score for t3.micro instances in us-east-1Try:Compare placement scores for m5.* instances across availability zones
• compare_spot_prices

  Compare spot instance prices across different regions

  Try:Compare c5.xlarge prices between eu-west-1 and us-west-2Try:Show the price difference for r6g instances between all regions
• filter_instances

  Filter spot instances by vCPU, memory, price, and other attributes

  Try:Find instances with at least 8 vCPU and 32GB memoryTry:Show instances with price under $0.20 in us-east-1Try:Filter by instance type pattern c5.* with minimum score 8
• export_spot_data

  Export spot instance data in JSON or CSV format for automation

  Try:Export all m5 instances with scores to JSONTry:Get spot price data in CSV format for c5.* instances

Note: Tool names inferred from MCP integration section and usage examples since explicit tool names aren't directly documented

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Installation

# macOS with Homebrew
brew tap alexei-led/tap
brew install alexei-led/tap/spotinfo

# Linux/Windows: Download from releases
curl -L https://github.com/alexei-led/spotinfo/releases/latest/download/spotinfo_linux_amd64.tar.gz | tar xz

# Docker
docker pull ghcr.io/alexei-led/spotinfo:latest

{
  "mcpServers": {
    "spotinfo": {
      "command": "spotinfo",
      "args": ["--mcp"]
    }
  }
}

FAQ

Do I need AWS credentials to use spotinfo?

No, AWS credentials are optional. Without credentials, you can still access static spot advisor data and pricing, but live price fallback and placement scores will be unavailable.

What do placement scores mean?

Placement scores (1-10 scale) represent the success probability of your Spot Instance request, considering your entire request context. Higher scores indicate better chances of success, and scores improve when you allow more instance type flexibility.

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