I made an example a few posts before:
Making an http request to a remote AI-based text-to-speech web service, which will return with audio data in whatever format (MP3, OGG, etc.), that should be playable on the fly, since AI-based stuff cannot obviously be pre-made and included in a package, no matter how large it might be.
This is extremely easy (I’d say it’s trivial) to realize using C++/C# or whatever language has Simconnect bindings as an external .EXE solution but, as far as I know, it’s impossible using a pure WASM approach that would be Marketplace/Xbox-compatible.