Google Home & IFTTT - which google home?

When using something like IFTTT to call the HA api from a google home device, is it possible to detect which google home it was.

Thus when running a script (for example), it would be possible to use TTS directly on the triggered device, rather than broadcast…

(I know that IFTTT can include a verbal response on the triggered device)

so digging though the Google Assistant IFTTT and WebHocks documentation, and checking the headers that are sent by google/IFTTT, there is nothing to determine which device made the IFTTT call.

So, no way to do what I want unless I either hardwire the device to reply on, use broadcast, or include the device in my command.

damn.