ntfy-android VS simple-keyboard

Maybe try Ntfy, it has great support for automation apps through intents(for reacting) and http requests(for sending). Great documentation too.

I've found the intent in the code (that is linked in the docs):https://github.com/binwiederhier/ntfy-android/blob/main/app/src/main/java/io/heckel/ntfy/msg/BroadcastService.kt

Also, I had recommended AutoRemote/Join since it has a friendly interface and ditect events in Tasker. You could also possibly use Ntfy, but it is not very user friendly and has no direct events/action; you have to custom create http requests/receive intents and other complexities etc(though it's free).

GitHub (Android): https://github.com/binwiederhier/ntfy-android

ntfy - PUT/POST to your phone (version 1.14.0): Send notifications to your phone from any script using PUT/POST requests

Integrate it with the Ntfy notification app that has great HTTP Put/Post support.

https://github.com/binwiederhier/ntfy-android (disclaimer: mine, self-learner too)

There is also another Simple Keyboard, not from SimpleMobileTools, which i like better.

Simple Keyboard (version 5.13): Simply keyboard and nothing more

Surely if you're asserting that all the posts ends the way you describe, there wouldn't be cases like Simple Keyboard, that got banned and then Google acknowledged they were wrong, or Pocketwood being banned and then reinstated.

Simple Keyboard - Less than 1 MB in size & very easy to copy-paste the content.

Simple Keyboard, a keyboard that is great at being a keyboard and nothing else. No spell checking, no suggestions, no swiping, no superfluous permissions, no bloat, no tracking. Because the simple life is the best life.

Maybe this could be helpful for you. https://github.com/rkkr/simple-keyboard