Cloudformation

Handles AWS CloudFormation templates, stack deployments, and drift management. You'll reach for this when writing YAML or JSON infrastructure definitions, deploying stacks across environments, previewing changes with change sets, or troubleshooting failed deployments. The skill covers the full lifecycle: template structure with parameters and conditions, CLI commands for stack operations, VPC and Lambda resource definitions, and nested stacks for organizing complex infrastructure. Honestly, CloudFormation's verbosity can be painful compared to Terraform, but if you're all-in on AWS and want native integration without third-party state management, this gives you the patterns and commands to keep your infrastructure as code workflow moving.

skills.sh installs: 132
GitHub stars: 1.2K
last updated: Jun 8, 2026

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Install

$ npx -y skills add itsmostafa/aws-agent-skills --skill cloudformation --agent claude-code

Installs into .claude/skills of the current project.

Files

AWS CloudFormation

AWS CloudFormation provisions and manages AWS resources using templates. Define infrastructure as code, version control it, and deploy consistently across environments.

Core Concepts
Common Patterns
CLI Reference
Best Practices
Troubleshooting
References

Core Concepts

Templates

JSON or YAML files defining AWS resources. Key sections:

Parameters: Input values
Mappings: Static lookup tables
Conditions: Conditional resource creation
Resources: AWS resources (required)
Outputs: Return values

Stacks

Collection of resources managed as a single unit. Created from templates.

Change Sets

Preview changes before executing updates.

Stack Sets

Deploy stacks across multiple accounts and regions.

Common Patterns

Basic Template Structure

AWSTemplateFormatVersion: '2010-09-09'
Description: My infrastructure template

Parameters:
  Environment:
    Type: String
    AllowedValues: [dev, staging, prod]
    Default: dev

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