obviously it’s a remote service, so you don’t directly control it unless you run it yourself, but the website links to this repo https://github.com/gugray/rss-parrot so the code does seem to be available under a free license (I have not tried to run it myself)

























Obviously the way the previous commenter worded it would infringe on the platforms’ free speech, it’s only workable if we replace “harmful” with “illegal” (e.g. libelous).