@AZRushFan, yes, I just tried it. It worked for me with this text at the end of my configuration.yaml:

rest_command: triggercmd_calculator: url: 'https://www.triggercmd.com/api/run/triggerSave' method: "post" content_type: "application/x-www-form-urlencoded" payload: "trigger=calculator&computer=russfam&token=(my token)"

7c976f0e-b70c-45b1-a3be-418b63a118c2-image.png

That said, would it help if I built an official Home Assistant integration?

EDIT 9/15/24: The official TRIGGERcmd integration will be available in next Home Assistant version (2024.10). It's due to be released on 10/2/2024. Please try using it instead of the "RESTful Command" method described above.