**To list the dimensions for your AWS account** The following ``list-dimensions`` example lists all AWS IoT Device Defender dimensions that are defined in your AWS account. :: aws iot list-dimensions Output:: { "dimensionNames": [ "TopicFilterForAuthMessages", "TopicFilterForActivityMessages" ] } For more information, see `Detect Commands <https://docs.aws.amazon.com/iot/latest/developerguide/DetectCommands.html>`__ in the *AWS IoT Developer Guide*.