This is neat! There's definitely a missing formal, human layer sitting above code. Two thoughts come to mind:

1. For applications with a database, the database schema for core models strikes me as the canonical definition, except it's missing descriptions. 2. It feels like this is only a partial solution. Why not go all the way? It seems to me that more aspects of code needs this level of governance than just data models.

Absolutely agree that many things need governance, human and agent. It seems to me that mostly, the things downstream of the data structures: storage, input, transport etc are derived from the data or can be applied as a layer on top. I'm not trying to boil the entire ocean for this but my thesis is that if you can agree on the shape of the data and what that means, you've got a great foundation for all work that follows.