My "non-professional in the field" opinion of this at first glance is that this seems like a concept ripe for abuse and security holes (not to mention scam potential) trying to be a successor to something that was already pretty bad in that regard...

This would be better if it was designed with the end user in mind from the get go and in full control of defining portals himself. (and by that I mean, if you take the example linked by omneity [1], I should be the one defining which "shopping cart" i'm sending the recipe ingredients to or which social app is triggered and what data am I sending it).

For some reason this also gives me some "Fuschia OS" vibes [2] or at least how Google would want to have this as standard on the web...

[1] - https://news.ycombinator.com/item?id=23688857 [2] - https://www.youtube.com/watch?v=Z7qGHgF1Pb4