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Crust

Crust – see your infrastructure plan exposed with clarity.

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Why “Crust”?

Crust is the outermost layer of the Earth, where everything visible happens — just like the terraform plan output: it shows what will change in your infrastructure, but in a raw, hard-to-read format.

The Crust CLI acts as a filter: it interprets this confusing surface and transforms it into something clear, explaining what will actually happen, directly in the layer that developers need to see.

Crust is a CLI tool that uses OpenAI to enhance your Terraform and Terragrunt workflow. It provides three main features:

  1. Security Analysis: Uses OpenAI to analyze your Terraform plans for potential security issues, providing clear explanations and recommendations.

  2. Cost Analysis: Calculates the cost of your AWS infrastructure changes using the AWS Pricing API, showing detailed cost breakdowns and comparisons.

  3. Plan Explanation: Uses OpenAI to provide clear, human-readable explanations of your Terraform/Terragrunt plan outputs in your preferred language.

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Key Features

  • OpenAI Integration: Leverages GPT-4 for intelligent analysis and explanations
  • AWS Cost Analysis: Detailed cost calculations using AWS Pricing API
  • Multi-language Support: Explanations available in multiple languages
  • Colorized Output: Beautifully formatted output with colors and emojis
  • Easy Setup: Simple configuration with OpenAI API key

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How It Works

Crust works by:

  1. Executing your Terraform plan
  2. Analyzing the output using OpenAI
  3. Calculating costs using AWS Pricing API
  4. Presenting the results in a clear, formatted way

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Prerequisites

Before using Crust, you’ll need:

  • Node.js 18 or higher
  • Terraform or Terragrunt installed
  • An OpenAI API key
  • AWS credentials (for cost analysis)

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Getting Started

To get started with Crust:

  1. Install the CLI
  2. Run crust init to configure your OpenAI API key
  3. Start using the commands

Check out our Installation Guide and Getting Started Guide for more details.