Cool work, thanks. A bit like https://github.com/kevin1024/vcrpy in python, if you weren't aware OP.
Vcrpy is closer to an automock, where you create tests that hit external services, so vcrpy records them and replays for subsequent tests. You write the tests.
Here you don't write tests at all, just use the app. The tests are automatically created.
Similar ideas, but at a different layer.