Lists agents or the Connector by ID or lists all agents/Connectorsassociated with your user account if you did not specify an ID.Show details from next link. https://docs.aws.amazon.com/ja_jp/cli/latest/reference/discovery/describe-agents.html
| aws discovery describe-agents --filters condition=EQUALS |
| Setting Up AWS Application Discovery Service - AWS Application Discovery Service : http://docs.aws.amazon.com/application-discovery/latest/userguide/discovery-connector.html |