Actually, even if you don’t care about #UnifiedPush, having this minimal #Prosody server that just accepts messages via a simple REST API and sends them out via #XMPP is great alternative to the various sendxmpp scripts out there.

https://gultsch.de/posts/xmpp-via-http/

Sending Jabber/XMPP Messages via HTTP

The goal of this tutorial is to set up a simple REST API that allows you to send XMPP messages to an existing XMPP account. This can be easily integrated into monitoring solutions or other scripts that send out status information. While there are command-line tools like go-sendxmpp that send messages by connecting to an XMPP server directly, this guide is specifically about providing an HTTP interface. curl "https://ntfy.stdmsg.tech:5281/msg/[email protected]" \ -u [email protected]:secret \ -H "Content-Type: text/plain" \ -d "Your flat white is done" Hint: If you don’t have an XMPP account to receive these messages, you can create one on a public server from within Conversations (F-Droid, Google Play) or another XMPP client of your choosing.

Daniel Gultsch
GitHub - 42wim/matterbridge: bridge between mattermost, IRC, gitter, xmpp, slack, discord, telegram, rocketchat, twitch, ssh-chat, zulip, whatsapp, keybase, matrix, microsoft teams, nextcloud, mumble, vk and more with REST API (mattermost not required!)

bridge between mattermost, IRC, gitter, xmpp, slack, discord, telegram, rocketchat, twitch, ssh-chat, zulip, whatsapp, keybase, matrix, microsoft teams, nextcloud, mumble, vk and more with REST API...

GitHub
@km @daniel there is a more active fork of matterbridge over at https://github.com/matterbridge-org/matterbridge btw
GitHub - matterbridge-org/matterbridge: Multi-protocol chat bridge (IRC, Matrix, XMPP, Discord, Telegram, etc…)

Multi-protocol chat bridge (IRC, Matrix, XMPP, Discord, Telegram, etc…) - matterbridge-org/matterbridge

GitHub