Do you mean you want to hide the command sent/failed message in the screen when tapped? If so, you can use the custom CSS in the Themes and Styles feature to hide the display.
.toast { display: none }
This is not supported now, but there is a Feature Request for triggering a Rule by HTTP/Webhook that you may want to vote your interests. The idea here is to include the data in the request that to be exposed in the rule execution and to be assigned to a variable.