[anonova]

Have you actually implemented something following this spec? My experience is that it's somewhat okay-defined for consuming data, but the spec itself is wildly incomplete in the other direction. Looking at the repo and discussion forum, the maintainers are inactive, with tons of open questions unanswered.

[geoffroy]

I implemented two APIs with it, mostly read oriented to be honest. The biggest problem we faced is the lack of maturity of Android and iOS SDKs for it.