As a thought, HamAlert has the ability to send alerts to a URL and Mastodon has web hooks so theoretically it should be possible to post from HamAlert to Mastodon.
100% I put together a list of open source CAD software a couple of years ago, but none of the options are quite there yet.
As a thought, HamAlert has the ability to send alerts to a URL and Mastodon has web hooks so theoretically it should be possible to post from HamAlert to Mastodon.