audytx vs CFRipper

audytx analyzes AWS infrastructure code and Terraform pull requests, presenting security and cost findings in GitHub and to coding agents. Its deterministic, non-AI engine models resource relationships such as invocation topology, encryption chains, network exposure, resource lifetimes, and IAM trust graphs. The maker lists 303 AWS Terraform checks and 27 cross-resource reasoning axes. A GitHub App posts pull-request digests, inline review, and SARIF, using read-only contents permission while writing comments, reviews, statuses, and SARIF uploads. An optional GitHub Actions step uploads a resolved Terraform plan over OIDC without shared secrets. A hosted MCP server exposes the engine to Claude Code, Cursor, and Codex; autofix applies line-anchored changes and rescans for up to three passes. AWS, Terraform, and CloudFormation are supported in stated hosted workflows. Free includes 100 scans monthly; Plus costs $20 a month and Pro $100 a month.

CFRipper is a free, open-source Python library and command-line security analyzer for AWS CloudFormation templates. It examines template files to help keep vulnerable infrastructure from reaching production. The CLI accepts templates as arguments and can return text or JSON findings, with an option to save results in an output folder. Example findings include wildcard principals and IAM role policies that grant excessive permissions. Rules can be configured with a rules file and filters folder, and users can add plugins for their own compliance checks. Documented exit codes distinguish successful scans, scanning errors, invalid templates, and unhandled exceptions. CFRipper runs on Linux, macOS, Windows, or as self-hosted software. The project uses uv for dependencies, provides installation instructions for those operating systems, and is distributed under the Apache License 2.0. Its analysis scope is CloudFormation; Terraform and Kubernetes are not supported.