[fenollp]

I'm guessing this is doing some kind of tree-diff on the DOM?

Now if you would have this generate a graphQL spec file, you could run a graphQL server acting as a proxy to lots of websites. That would be interesting. Not sure how that fares with the websites' owners' ToS though.

[changmin]

Thanks for the idea. It makes me think how to build API. I need to take a look at graphQL.

[supergreg]

Yahoo also has yql, a sql-like language that can filter the Dom and return Json, XML or RSS.