Show HN: Open-source tool that lets you PUT/POST notifications directly to phone

Hey there, I've been working really hard to make a tool that lets you PUT/POST messages directly to your phone, as push notifications. It's open source [1] and has an Android app [2,3]. It can be self-hosted as well, but I host a free version of it on ntfy.sh [4].

Right now there is no CLI, it just works with curl or any other HTTP client, like so:

   curl -d "Hey, I can send messages to my phone" ntfy.sh/alerts

And those messages will show up on your phone as notifications. Screenshot: https://imgur.com/a/zXshsjM

Happy to answer any and all questions, and I' d love some feedback.

[1] GitHub (server): https://github.com/binwiederhier/ntfy

[2] GitHub (Android app): https://github.com/binwiederhier/ntfy-android

[3] Google Play: https://play.google.com/store/apps/details?id=io.heckel.ntfy

[4] Website: https://ntfy.sh/