I ended up going with node-red over huginn since it met my needs better, but having a "glue" service like this is useful. Whether it's building an api for sites that lack one (eg, alert me when this clinical trial actually gets results) or handling exceptions (when X is down, toggle Y switch).

Sure, you can write code and deploy it, etc to do this. The glue service just presents a low code approach to most simple things.