I have been reviewing this draft description of the forthcoming Indigo/Alexa integration plugin. https://wiki.indigodomo.com/doku.php?id ... gins:alexa
Because I have 130 Alexa Hue-Bridge Actions published across 12 Hue-Bridges I had consiered just continuing to use the Hue-Bridge solution until I realized the the most important reason for switching to the new plugin is the protection it will provide from Amazon disabling the "back-door" connection relied upon by the Hue-Bridge plugin. So I'll republish all 130 and then some.
Although the new plugin will provide a mechanism for asking Alexa to speak the contents of a variable. I have found a very well implemented Alexa skill that supports an Indigo event triggering Alexa to play an Alexa routine which can be anything including announcing events.
The Alexa skill is called IFTTT-Trigger by mkZenze This skill provides 3 free triggers and unlimited number of triggers for $5/yr
It work by creating a doorbell type device in Alexa's devices that responds to an IFTTT webhook that has the same name as the IFTTT-trigger name. The trigger device can then be used for triggering an Alexa routine. It might prove useful to integrate a similar capability into a future release of the Alexa plugin.
It's important to note that the webhook must exactly match the trigger name for the trigger to work. Also if you happen to two identical triggers defined accidentally (as I did), the skill will stop creating new devices. I found it convenient to create a naming convention to make it easier to keep track of triggers on the Alexa app's Devices and Routines pages as well as in Indigo's Action Groups listings as shown in the attached screen shots: