cfn-lint

Install command: 
brew install cfn-lint

Validate CloudFormation templates against the CloudFormation spec

https://github.com/aws-cloudformation/cfn-lint/

License: MIT-0

Formula JSON API: /api/formula/cfn-lint.json

Formula code: cfn-lint.rb on GitHub

Bottle (binary package) installation support provided for:

macOS on
Apple Silicon		 tahoe ✅
sequoia ✅
sonoma ✅
macOS on
Intel		 sonoma ✅
Linux ARM64 ✅
x86_64 ✅

Current versions:

stable ✅ 1.40.4

Depends on:

libyaml 0.2.5 YAML Parser
pydantic 2.12.4 Data validation using Python type hints
python@3.14 3.14.0 Interpreted, interactive, object-oriented programming language
rpds-py 0.28.0 Python bindings to Rust's persistent data structures

Analytics:

Installs (30 days)
cfn-lint 3,979
cfn-lint --HEAD 5
Installs on Request (30 days)
cfn-lint 2,901
cfn-lint --HEAD 5
Build Errors (30 days)
cfn-lint 0
Installs (90 days)
cfn-lint 9,684
cfn-lint --HEAD 12
Installs on Request (90 days)
cfn-lint 7,248
cfn-lint --HEAD 12
Installs (365 days)
cfn-lint 45,126
cfn-lint --HEAD 83
Installs on Request (365 days)
cfn-lint 39,583
cfn-lint --HEAD 83