[bern4444]

I was on a team building tweet tiles[0][1] which required a cross platform UI system that would allow 3rd party developers to register a schema that would be used to render a custom UI under certain circumstances (usually by including a link in your post). We made it to beta, but never beyond given the internal turmoil.

We considered Adaptive Cards, but ultimately decided against it in favor of our own schema especially since we already had platform specific UI libraries.

Why?

Adaptive cards proved inflexible for uses not part of its core capabilities.

Adaptive cards doesn't allow for interactive elements IE charts or graphs with tool tips.

Adaptive cards doesn't appear to be well maintained or supported for ongoing future needs.

There were some other reasons but they are fuzzy a couple of years after the fact. This was one of the most fun projects I've worked on, I had to write a mini parser which is always a fun exercise, and I think it had massive potential. Would have been a very cool project to ship to prod fully but it wasn't meant to be.

[0]https://twitter.com/XDevelopers/status/1585707921433923585

[1]https://twitter.com/ashevat/status/1562862418514288640