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

Development: Pull requests

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
golden gate
tahoe
sequoia
Linux ARM64
x86_64

Current versions:

stable 1.56.3

Depends on:

libyaml 0.2.5 YAML Parser
pydantic 2.13.5 Data validation using Python type hints
python@3.14 3.14.7 Interpreted, interactive, object-oriented programming language
rpds-py 2026.6.3 Python bindings to Rust's persistent data structures

Binaries: cfn-lint

Analytics:

30 days90 days365 days
Installs2,5608,40538,052
Installs (--HEAD)4747
Installs on Request1,5986,46228,201
Installs on Request (--HEAD)4747
Build Errors0