Amazon Polly Client works with arbitrary keys?

Question

I have an app that works perfectly. It has dialog for accepting the AccessKey and SecretKey that are passed into AmazonPolyClient constructor.

mAmazonPollyClient = new AmazonPollyClient(accessKey, secretKey, mRegionEndpoint);
            mAmazonPollyConfig = new AmazonPollyConfig()
            {
                //RegionEndpoint = mRegionEndpoint,
                Timeout = TimeSpan.FromSeconds(10), // Set the custom timeout
                ReadWriteTimeout = TimeSpan.FromSeconds(10) // Set the custom timeout for read/write operations

            };

When I intentionally corrupt the keys before passing them to the constructor. The Polly still works fine and generate audio. Is that because I have paid AWS account? (Should be completely opposite). Any ideas?

Answer 1

When initializing AmazonPolyClient no calls are made to the service. But attempting to make any API call like getting the voices will result in 403 return code (Forbidden).