I don't know much about Zapier but IFTTT seems to me to be more like the infra-structure for software agents. IFTTT you are still creating recipes. I would like to say that Agent 2.0 would look like the Knowledge Navigator of the Apple videos (https://www.youtube.com/watch?v=HGYFEI6uLy0). Many moons ago, I remember seeing this video in a graduate computer science course on CHI and freaking out. Now the question is what does Agent 1.0 look like?