The first service we will look at is CloudFormation. This makes sense as the APIs found in here will give us a starting point for finding information about the resources in a given stack.
This endpoint is responsible for listing all stacks associated with a particular AWS account. For a given stack, its response looks like the following:
{"Stacks" [{"StackId" "arn:aws:cloudformation:ap-southeast-2:337944750480:stack/DevStack-62031/1", "StackStatus" "CREATE_IN_PROGRESS", "StackName" "DevStack-62031", "Parameters" [{"ParameterKey" "DevDB", "ParameterValue" nil}]}]}
Unfortunately, it doesn't say anything about which resources belong to this stack. It does, however, give us the stack name, which we can use to look up resources in the next service.