Guard offers a policy-as-code domain-specific language (DSL) to write rules and validate JSON- and YAML-formatted data such as CloudFormation Templates, K8s configurations, and Terraform JSON plans/configurations against those rules.
The CloudFormation Provider Development Toolkit Python Plugin allows you to autogenerate Python code based on an input schema.
The CloudFormation Provider Development Toolkit allows you to author your own resource providers and modules that can be used by CloudFormation.
The CloudFormation Provider Development Toolkit Java Plugin allows you to autogenerate java code based on an input schema.