• Click on "Say a phrase with a text ingredient"
• Add the command (e.g. "turn the light $") and the response

• Set up the URL to your IP address and Port
• Chose POST as the method
• Set application/x-www-form-urlencoded as the content type
• Set up the POST body with the ingredient from the previous step (e.g. status={{TextField}})

I used Python, Tornado and xtacocorex's CHIP_IO library