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CloudFormation Policy Generator

Attempts to generate the least-privileged IAM policy required to deploy an AWS CloudFormation template.

It doesn't do any magic, nor does it make any AWS calls. It simply consults a catalog of the needed permissions for each CloudFormation resource type. The needed permissions can vary depending on which fields are populated on the resource.

A very small number of resources are supported right now. I'll be adding more over time, but pull requests are also welcome.

Example

For JSON templates:

curl -H "Content-Type: application/json" --data @template.json https://cfn-policy-generator.herokuapp.com/cloudformation/2010-09-09/template

For YAML templates:

curl -H "Content-Type: application/x-yaml" --data @template.yml https://cfn-policy-generator.herokuapp.com/cloudformation/2010-09-09/template

Local Testing

Run racket server.rkt.